File irqbalance-1.9.3.10.git+1a7d461.obscpio of Package irqbalance
07070100000000000081A40000000000000000000000016569B9D300000145000000000000000000000000000000000000002B00000000irqbalance-1.9.3.10.git+1a7d461/.gitignore*.a
*.o
*~
.deps
*.diff
*.patch
*.orig
*.rej
/INSTALL
/Makefile
/Makefile.in
*/Makefile
*/Makefile.in
/aclocal.m4
/autom4te.cache
/compile
/config.guess
/config.h
/config.h.in
/config.log
/config.status
/config.sub
/configure
/install-sh
/libtool
/ltmain.sh
/m4
/missing
/stamp-h1
/depcomp
/irqbalance
irqbalance-*.tar.*
07070100000001000081A40000000000000000000000016569B9D30000009F000000000000000000000000000000000000002C00000000irqbalance-1.9.3.10.git+1a7d461/.travis.ymllanguage: c
dist: trusty
compiler:
- clang
- gcc
script: ./autogen.sh && ./configure && make && make check
after_script: cat ./tests/runoneshot.sh.log
07070100000002000081A40000000000000000000000016569B9D30000004C000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/AUTHORSArjen Van De Ven <arjanvandeven@gmail.com>
Neil Horman <nhorman@gmail.com>
07070100000003000081A40000000000000000000000016569B9D300004648000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/COPYING GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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of this license document, but changing it is not allowed.
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07070100000004000081A40000000000000000000000016569B9D300000833000000000000000000000000000000000000002C00000000irqbalance-1.9.3.10.git+1a7d461/Makefile.am# Makefile.am --
# Copyright 2009 Red Hat Inc., Durham, North Carolina.
# All Rights Reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Authors:
# Steve Grubb <sgrubb@redhat.com>
#
AUTOMAKE_OPTIONS = no-dependencies
ACLOCAL_AMFLAGS = -I m4
EXTRA_DIST = COPYING autogen.sh misc/irqbalance.service misc/irqbalance.env
SUBDIRS = tests
UI_DIR = ui
AM_CFLAGS = $(LIBCAP_NG_CFLAGS) $(GLIB2_CFLAGS) $(NUMA_CFLAGS) $(LIBNL3_CFLAGS)
AM_CPPFLAGS = -I${top_srcdir} -W -Wall -Wshadow -Wformat -Wundef -D_GNU_SOURCE
noinst_HEADERS = bitmap.h constants.h cpumask.h irqbalance.h non-atomic.h \
types.h $(UI_DIR)/helpers.h $(UI_DIR)/irqbalance-ui.h $(UI_DIR)/ui.h
sbin_PROGRAMS = irqbalance
if IRQBALANCEUI
sbin_PROGRAMS += irqbalance-ui
endif
if STATICBUILD
irqbalance_LDFLAGS = -Wl,-Bstatic
endif
irqbalance_SOURCES = activate.c bitmap.c classify.c cputree.c irqbalance.c \
irqlist.c numa.c placement.c procinterrupts.c
if THERMAL
irqbalance_SOURCES += thermal.c
endif
irqbalance_LDADD = $(LIBCAP_NG_LIBS) $(GLIB2_LIBS) $(NUMA_LIBS) $(LIBNL3_LIBS)
if IRQBALANCEUI
irqbalance_ui_SOURCES = $(UI_DIR)/helpers.c $(UI_DIR)/irqbalance-ui.c \
$(UI_DIR)/ui.c
irqbalance_ui_LDADD = $(GLIB2_LIBS) $(NUMA_LIBS) $(CURSES_LIBS)
endif
dist_man_MANS = irqbalance.1
if IRQBALANCEUI
dist_man_MANS += irqbalance-ui.1
endif
CONFIG_CLEAN_FILES = debug*.list config/*
clean-generic:
rm -rf autom4te*.cache
rm -f *.rej *.orig *~
07070100000005000081A40000000000000000000000016569B9D3000004C9000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/README.mdWhat is Irqbalance
==================
Irqbalance is a daemon to help balance the cpu load generated by interrupts
across all of a systems cpus. Irqbalance identifies the highest volume
interrupt sources, and isolates each of them to a single unique cpu, so that
load is spread as much as possible over an entire processor set, while
minimizing cache miss rates for irq handlers.
## Building and Installing [](https://travis-ci.org/Irqbalance/irqbalance)
```bash
./autogen.sh
./configure [options]
make
make install
```
## Developing Irqbalance
Irqbalance is currently hosted on github, and so developers are welcome to use
the issue/pull request/etc infrastructure found there.
## Bug reporting
When something goes wrong, feel free to send us bugreport by one of the ways
described above. Your report should include:
* Irqbalance version you've been using (or commit hash)
* `/proc/interrupts` output
* `irqbalance --debug` output
* content of smp_affinity files - can be obtained by e.g.:
`$ for i in $(seq 0 300); do grep . /proc/irq/$i/smp_affinity /dev/null 2>/dev/null; done`
* your hw hierarchy - e.g. `lstopo-no-graphics` output
07070100000006000081A40000000000000000000000016569B9D300000C6B000000000000000000000000000000000000002B00000000irqbalance-1.9.3.10.git+1a7d461/activate.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/*
* This file contains the code to communicate a selected distribution / mapping
* of interrupts to the kernel.
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include "irqbalance.h"
static int check_affinity(struct irq_info *info, cpumask_t applied_mask)
{
cpumask_t current_mask;
char buf[PATH_MAX];
sprintf(buf, "/proc/irq/%i/smp_affinity", info->irq);
if (process_one_line(buf, get_mask_from_bitmap, ¤t_mask) < 0)
return 1;
return cpus_equal(applied_mask, current_mask);
}
static void activate_mapping(struct irq_info *info, void *data __attribute__((unused)))
{
char buf[PATH_MAX];
FILE *file;
int errsave, ret;
cpumask_t applied_mask;
/*
* only activate mappings for irqs that have moved
*/
if (!info->moved)
return;
if (!info->assigned_obj)
return;
if (info->flags & IRQ_FLAG_AFFINITY_UNMANAGED)
return;
/* activate only online cpus, otherwise writing to procfs returns EOVERFLOW */
cpus_and(applied_mask, cpu_online_map, info->assigned_obj->mask);
/*
* Don't activate anything for which we have an invalid mask
*/
if (check_affinity(info, applied_mask))
return;
sprintf(buf, "/proc/irq/%i/smp_affinity", info->irq);
file = fopen(buf, "w");
if (!file)
goto error;
cpumask_scnprintf(buf, PATH_MAX, applied_mask);
ret = fprintf(file, "%s", buf);
errsave = errno;
if (fclose(file)) {
errsave = errno;
goto error;
}
if (ret < 0)
goto error;
info->moved = 0; /*migration is done*/
return;
error:
log(TO_ALL, LOG_WARNING,
"Cannot change IRQ %i affinity: %s\n",
info->irq, strerror(errsave));
switch (errsave) {
case ENOSPC: /* Specified CPU APIC is full. */
case EAGAIN: /* Interrupted by signal. */
case EBUSY: /* Affinity change already in progress. */
case EINVAL: /* IRQ would be bound to no CPU. */
case ERANGE: /* CPU in mask is offline. */
case ENOMEM: /* Kernel cannot allocate CPU mask. */
/* Do not blacklist the IRQ on transient errors. */
break;
default:
/* Any other error is considered permanent. */
info->flags |= IRQ_FLAG_AFFINITY_UNMANAGED;
log(TO_ALL, LOG_WARNING, "IRQ %i affinity is now unmanaged\n",
info->irq);
}
}
void activate_mappings(void)
{
for_each_irq(NULL, activate_mapping, NULL);
}
07070100000007000081ED0000000000000000000000016569B9D300000079000000000000000000000000000000000000002B00000000irqbalance-1.9.3.10.git+1a7d461/autogen.sh#! /bin/sh
set -x -e
mkdir -p m4
# --no-recursive is available only in recent autoconf versions
autoreconf -fv --install
07070100000008000081A40000000000000000000000016569B9D300002F94000000000000000000000000000000000000002900000000irqbalance-1.9.3.10.git+1a7d461/bitmap.c/*
This file is taken from the Linux kernel and minimally adapted for use in userspace
*/
/*
* lib/bitmap.c
* Helper functions for bitmap.h.
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include "config.h"
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "bitmap.h"
#include "non-atomic.h"
/*
* bitmaps provide an array of bits, implemented using an an
* array of unsigned longs. The number of valid bits in a
* given bitmap does _not_ need to be an exact multiple of
* BITS_PER_LONG.
*
* The possible unused bits in the last, partially used word
* of a bitmap are 'don't care'. The implementation makes
* no particular effort to keep them zero. It ensures that
* their value will not affect the results of any operation.
* The bitmap operations that return Boolean (bitmap_empty,
* for example) or scalar (bitmap_weight, for example) results
* carefully filter out these unused bits from impacting their
* results.
*
* These operations actually hold to a slightly stronger rule:
* if you don't input any bitmaps to these ops that have some
* unused bits set, then they won't output any set unused bits
* in output bitmaps.
*
* The byte ordering of bitmaps is more natural on little
* endian architectures. See the big-endian headers
* include/asm-ppc64/bitops.h and include/asm-s390/bitops.h
* for the best explanations of this ordering.
*/
int __bitmap_empty(const unsigned long *bitmap, int bits)
{
int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap[k])
return 0;
if (bits % BITS_PER_LONG)
if (bitmap[k] & BITMAP_LAST_WORD_MASK(bits))
return 0;
return 1;
}
int __bitmap_full(const unsigned long *bitmap, int bits)
{
int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (~bitmap[k])
return 0;
if (bits % BITS_PER_LONG)
if (~bitmap[k] & BITMAP_LAST_WORD_MASK(bits))
return 0;
return 1;
}
int __bitmap_weight(const unsigned long *bitmap, int bits)
{
int k, w = 0, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; k++)
w += hweight_long(bitmap[k]);
if (bits % BITS_PER_LONG)
w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits));
return w;
}
int __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] != bitmap2[k])
return 0;
if (bits % BITS_PER_LONG)
if ((bitmap1[k] ^ bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits))
return 0;
return 1;
}
void __bitmap_complement(unsigned long *dst, const unsigned long *src, int bits)
{
int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
dst[k] = ~src[k];
if (bits % BITS_PER_LONG)
dst[k] = ~src[k] & BITMAP_LAST_WORD_MASK(bits);
}
/*
* __bitmap_shift_right - logical right shift of the bits in a bitmap
* @dst - destination bitmap
* @src - source bitmap
* @nbits - shift by this many bits
* @bits - bitmap size, in bits
*
* Shifting right (dividing) means moving bits in the MS -> LS bit
* direction. Zeros are fed into the vacated MS positions and the
* LS bits shifted off the bottom are lost.
*/
void __bitmap_shift_right(unsigned long *dst,
const unsigned long *src, int shift, int bits)
{
int k, lim = BITS_TO_LONGS(bits), left = bits % BITS_PER_LONG;
int off = shift/BITS_PER_LONG, rem = shift % BITS_PER_LONG;
unsigned long mask = (1UL << left) - 1;
for (k = 0; off + k < lim; ++k) {
unsigned long upper, lower;
/*
* If shift is not word aligned, take lower rem bits of
* word above and make them the top rem bits of result.
*/
if (!rem || off + k + 1 >= lim)
upper = 0;
else {
upper = src[off + k + 1];
if (off + k + 1 == lim - 1 && left)
upper &= mask;
}
lower = src[off + k];
if (left && off + k == lim - 1)
lower &= mask;
dst[k] = upper << (BITS_PER_LONG - rem) | lower >> rem;
if (left && k == lim - 1)
dst[k] &= mask;
}
if (off)
memset(&dst[lim - off], 0, off*sizeof(unsigned long));
}
/*
* __bitmap_shift_left - logical left shift of the bits in a bitmap
* @dst - destination bitmap
* @src - source bitmap
* @nbits - shift by this many bits
* @bits - bitmap size, in bits
*
* Shifting left (multiplying) means moving bits in the LS -> MS
* direction. Zeros are fed into the vacated LS bit positions
* and those MS bits shifted off the top are lost.
*/
void __bitmap_shift_left(unsigned long *dst,
const unsigned long *src, int shift, int bits)
{
int k, lim = BITS_TO_LONGS(bits), left = bits % BITS_PER_LONG;
int off = shift/BITS_PER_LONG, rem = shift % BITS_PER_LONG;
for (k = lim - off - 1; k >= 0; --k) {
unsigned long upper, lower;
/*
* If shift is not word aligned, take upper rem bits of
* word below and make them the bottom rem bits of result.
*/
if (rem && k > 0)
lower = src[k - 1];
else
lower = 0;
upper = src[k];
if (left && k == lim - 1)
upper &= (1UL << left) - 1;
dst[k + off] = lower >> (BITS_PER_LONG - rem) | upper << rem;
if (left && k + off == lim - 1)
dst[k + off] &= (1UL << left) - 1;
}
if (off)
memset(dst, 0, off*sizeof(unsigned long));
}
void __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] & bitmap2[k];
}
void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] | bitmap2[k];
}
void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] ^ bitmap2[k];
}
void __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] & ~bitmap2[k];
}
int __bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
{
int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & bitmap2[k])
return 1;
if (bits % BITS_PER_LONG)
if ((bitmap1[k] & bitmap2[k]) & BITMAP_LAST_WORD_MASK(bits))
return 1;
return 0;
}
/*
* Bitmap printing & parsing functions: first version by Bill Irwin,
* second version by Paul Jackson, third by Joe Korty.
*/
#define CHUNKSZ 32
#define nbits_to_hold_value(val) fls(val)
#define unhex(c) (isdigit(c) ? (c - '0') : (toupper(c) - 'A' + 10))
#define BASEDEC 10 /* fancier cpuset lists input in decimal */
/**
* bitmap_scnprintf - convert bitmap to an ASCII hex string.
* @buf: byte buffer into which string is placed
* @buflen: reserved size of @buf, in bytes
* @maskp: pointer to bitmap to convert
* @nmaskbits: size of bitmap, in bits
*
* Exactly @nmaskbits bits are displayed. Hex digits are grouped into
* comma-separated sets of eight digits per set.
*/
int bitmap_scnprintf(char *buf, unsigned int buflen,
const unsigned long *maskp, int nmaskbits)
{
int i, word, bit, len = 0;
unsigned long val;
const char *sep = "";
int chunksz;
uint32_t chunkmask;
int first = 1;
chunksz = nmaskbits & (CHUNKSZ - 1);
if (chunksz == 0)
chunksz = CHUNKSZ;
i = ALIGN(nmaskbits, CHUNKSZ) - CHUNKSZ;
for (; i >= 0; i -= CHUNKSZ) {
chunkmask = ((1ULL << chunksz) - 1);
word = i / BITS_PER_LONG;
bit = i % BITS_PER_LONG;
val = (maskp[word] >> bit) & chunkmask;
if (val!=0 || !first || i==0) {
len += snprintf(buf+len, buflen-len, "%s%0*lx", sep,
(chunksz+3)/4, val);
sep = ",";
first = 0;
}
chunksz = CHUNKSZ;
}
return len;
}
/**
* __bitmap_parse - convert an ASCII hex string into a bitmap.
* @buf: pointer to buffer containing string.
* @buflen: buffer size in bytes. If string is smaller than this
* then it must be terminated with a \0.
* @is_user: location of buffer, 0 indicates kernel space
* @maskp: pointer to bitmap array that will contain result.
* @nmaskbits: size of bitmap, in bits.
*
* Commas group hex digits into chunks. Each chunk defines exactly 32
* bits of the resultant bitmask. No chunk may specify a value larger
* than 32 bits (%-EOVERFLOW), and if a chunk specifies a smaller value
* then leading 0-bits are prepended. %-EINVAL is returned for illegal
* characters and for grouping errors such as "1,,5", ",44", "," and "".
* Leading and trailing whitespace accepted, but not embedded whitespace.
*/
int __bitmap_parse(const char *buf, unsigned int buflen,
int is_user __attribute((unused)), unsigned long *maskp,
int nmaskbits)
{
int c, old_c, totaldigits, ndigits, nchunks, nbits;
uint32_t chunk;
bitmap_zero(maskp, nmaskbits);
nchunks = nbits = totaldigits = c = 0;
do {
chunk = ndigits = 0;
/* Get the next chunk of the bitmap */
while (buflen) {
old_c = c;
c = *buf++;
buflen--;
if (isspace(c))
continue;
/*
* If the last character was a space and the current
* character isn't '\0', we've got embedded whitespace.
* This is a no-no, so throw an error.
*/
if (totaldigits && c && isspace(old_c))
return 0;
/* A '\0' or a ',' signal the end of the chunk */
if (c == '\0' || c == ',')
break;
if (!isxdigit(c))
return -EINVAL;
/*
* Make sure there are at least 4 free bits in 'chunk'.
* If not, this hexdigit will overflow 'chunk', so
* throw an error.
*/
if (chunk & ~((1UL << (CHUNKSZ - 4)) - 1))
return -EOVERFLOW;
chunk = (chunk << 4) | unhex(c);
ndigits++; totaldigits++;
}
if (ndigits == 0)
return -EINVAL;
if (nchunks == 0 && chunk == 0)
continue;
__bitmap_shift_left(maskp, maskp, CHUNKSZ, nmaskbits);
*maskp |= chunk;
nchunks++;
nbits += (nchunks == 1) ? nbits_to_hold_value(chunk) : CHUNKSZ;
if (nbits > nmaskbits)
return -EOVERFLOW;
} while (buflen && c == ',');
return 0;
}
/**
* __bitmap_parselist - convert list format ASCII string to bitmap
* @buf: read nul-terminated user string from this buffer
* @buflen: buffer size in bytes. If string is smaller than this
* then it must be terminated with a \0.
* @is_user: location of buffer, 0 indicates kernel space
* @maskp: write resulting mask here
* @nmaskbits: number of bits in mask to be written
*
* Input format is a comma-separated list of decimal numbers and
* ranges. Consecutively set bits are shown as two hyphen-separated
* decimal numbers, the smallest and largest bit numbers set in
* the range.
*
* Returns 0 on success, -errno on invalid input strings.
* Error values:
* %-EINVAL: second number in range smaller than first
* %-EINVAL: invalid character in string
* %-ERANGE: bit number specified too large for mask
*/
int __bitmap_parselist(const char *buf, unsigned int buflen,
int is_user __attribute((unused)), unsigned long *maskp,
int nmaskbits)
{
int a, b, c, old_c, totaldigits;
int exp_digit, in_range;
totaldigits = c = 0;
bitmap_zero(maskp, nmaskbits);
do {
exp_digit = 1;
in_range = 0;
a = b = 0;
/* Get the next cpu# or a range of cpu#'s */
while (buflen) {
old_c = c;
c = *buf++;
buflen--;
if (isspace(c))
continue;
/*
* If the last character was a space and the current
* character isn't '\0', we've got embedded whitespace.
* This is a no-no, so throw an error.
*/
if (totaldigits && c && isspace(old_c))
return -EINVAL;
/* A '\0' or a ',' signal the end of a cpu# or range */
if (c == '\0' || c == ',')
break;
if (c == '-') {
if (exp_digit || in_range)
return -EINVAL;
b = 0;
in_range = 1;
exp_digit = 1;
continue;
}
if (!isdigit(c))
return -EINVAL;
b = b * 10 + (c - '0');
if (!in_range)
a = b;
exp_digit = 0;
totaldigits++;
}
if (!(a <= b))
return -EINVAL;
if (b >= nmaskbits)
return -ERANGE;
while (a <= b) {
set_bit(a, maskp);
a++;
}
} while (buflen && c == ',');
return 0;
}
07070100000009000081A40000000000000000000000016569B9D300002DB0000000000000000000000000000000000000002900000000irqbalance-1.9.3.10.git+1a7d461/bitmap.h#ifndef __LINUX_BITMAP_H
#define __LINUX_BITMAP_H
#ifndef __ASSEMBLY__
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#define BITS_PER_LONG ((int)sizeof(unsigned long)*8)
#define BITS_TO_LONGS(bits) \
(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
#define DECLARE_BITMAP(name,bits) \
unsigned long name[BITS_TO_LONGS(bits)]
#define ALIGN(x,a) (((x)+(a)-1UL)&~((a)-1UL))
#include "non-atomic.h"
static inline unsigned int hweight32(unsigned int w)
{
unsigned int res = w - ((w >> 1) & 0x55555555);
res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
res = (res + (res >> 4)) & 0x0F0F0F0F;
res = res + (res >> 8);
return (res + (res >> 16)) & 0x000000FF;
}
static inline unsigned long hweight64(uint64_t w)
{
if (BITS_PER_LONG == 32)
return hweight32((unsigned int)(w >> 32)) + hweight32((unsigned int)w);
w -= (w >> 1) & 0x5555555555555555ull;
w = (w & 0x3333333333333333ull) + ((w >> 2) & 0x3333333333333333ull);
w = (w + (w >> 4)) & 0x0f0f0f0f0f0f0f0full;
return (w * 0x0101010101010101ull) >> 56;
}
static inline int fls(int x)
{
int r = 32;
if (!x)
return 0;
if (!(x & 0xffff0000u)) {
x <<= 16;
r -= 16;
}
if (!(x & 0xff000000u)) {
x <<= 8;
r -= 8;
}
if (!(x & 0xf0000000u)) {
x <<= 4;
r -= 4;
}
if (!(x & 0xc0000000u)) {
x <<= 2;
r -= 2;
}
if (!(x & 0x80000000u)) {
x <<= 1;
r -= 1;
}
return r;
}
static inline unsigned long hweight_long(unsigned long w)
{
return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
}
#define min(x,y) ({ \
typeof(x) _x = (x); \
typeof(y) _y = (y); \
(void) (&_x == &_y); \
_x < _y ? _x : _y; })
/*
* bitmaps provide bit arrays that consume one or more unsigned
* longs. The bitmap interface and available operations are listed
* here, in bitmap.h
*
* Function implementations generic to all architectures are in
* lib/bitmap.c. Functions implementations that are architecture
* specific are in various include/asm-<arch>/bitops.h headers
* and other arch/<arch> specific files.
*
* See lib/bitmap.c for more details.
*/
/*
* The available bitmap operations and their rough meaning in the
* case that the bitmap is a single unsigned long are thus:
*
* Note that nbits should be always a compile time evaluable constant.
* Otherwise many inlines will generate horrible code.
*
* bitmap_zero(dst, nbits) *dst = 0UL
* bitmap_fill(dst, nbits) *dst = ~0UL
* bitmap_copy(dst, src, nbits) *dst = *src
* bitmap_and(dst, src1, src2, nbits) *dst = *src1 & *src2
* bitmap_or(dst, src1, src2, nbits) *dst = *src1 | *src2
* bitmap_xor(dst, src1, src2, nbits) *dst = *src1 ^ *src2
* bitmap_andnot(dst, src1, src2, nbits) *dst = *src1 & ~(*src2)
* bitmap_complement(dst, src, nbits) *dst = ~(*src)
* bitmap_equal(src1, src2, nbits) Are *src1 and *src2 equal?
* bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap?
* bitmap_subset(src1, src2, nbits) Is *src1 a subset of *src2?
* bitmap_empty(src, nbits) Are all bits zero in *src?
* bitmap_full(src, nbits) Are all bits set in *src?
* bitmap_weight(src, nbits) Hamming Weight: number set bits
* bitmap_shift_right(dst, src, n, nbits) *dst = *src >> n
* bitmap_shift_left(dst, src, n, nbits) *dst = *src << n
* bitmap_remap(dst, src, old, new, nbits) *dst = map(old, new)(src)
* bitmap_bitremap(oldbit, old, new, nbits) newbit = map(old, new)(oldbit)
* bitmap_scnprintf(buf, len, src, nbits) Print bitmap src to buf
* bitmap_parse(buf, buflen, dst, nbits) Parse bitmap dst from kernel buf
* bitmap_parse_user(ubuf, ulen, dst, nbits) Parse bitmap dst from user buf
* bitmap_scnlistprintf(buf, len, src, nbits) Print bitmap src as list to buf
* bitmap_parselist(buf, dst, nbits) Parse bitmap dst from list
* bitmap_find_free_region(bitmap, bits, order) Find and allocate bit region
* bitmap_release_region(bitmap, pos, order) Free specified bit region
* bitmap_allocate_region(bitmap, pos, order) Allocate specified bit region
*/
/*
* Also the following operations in asm/bitops.h apply to bitmaps.
*
* set_bit(bit, addr) *addr |= bit
* clear_bit(bit, addr) *addr &= ~bit
* change_bit(bit, addr) *addr ^= bit
* test_bit(bit, addr) Is bit set in *addr?
* test_and_set_bit(bit, addr) Set bit and return old value
* test_and_clear_bit(bit, addr) Clear bit and return old value
* test_and_change_bit(bit, addr) Change bit and return old value
* find_first_zero_bit(addr, nbits) Position first zero bit in *addr
* find_first_bit(addr, nbits) Position first set bit in *addr
* find_next_zero_bit(addr, nbits, bit) Position next zero bit in *addr >= bit
* find_next_bit(addr, nbits, bit) Position next set bit in *addr >= bit
*/
/*
* The DECLARE_BITMAP(name,bits) macro, in linux/types.h, can be used
* to declare an array named 'name' of just enough unsigned longs to
* contain all bit positions from 0 to 'bits' - 1.
*/
/*
* lib/bitmap.c provides these functions:
*/
extern int __bitmap_empty(const unsigned long *bitmap, int bits);
extern int __bitmap_full(const unsigned long *bitmap, int bits);
extern int __bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,
int bits);
extern void __bitmap_shift_right(unsigned long *dst,
const unsigned long *src, int shift, int bits);
extern void __bitmap_shift_left(unsigned long *dst,
const unsigned long *src, int shift, int bits);
extern void __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern void __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern int __bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern int __bitmap_subset(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern int __bitmap_weight(const unsigned long *bitmap, int bits);
extern int bitmap_scnprintf(char *buf, unsigned int len,
const unsigned long *src, int nbits);
extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user,
unsigned long *dst, int nbits);
extern int bitmap_scnlistprintf(char *buf, unsigned int len,
const unsigned long *src, int nbits);
extern int __bitmap_parselist(const char *buf, unsigned int buflen, int is_user,
unsigned long *dst, int nbits);
extern void bitmap_remap(unsigned long *dst, const unsigned long *src,
const unsigned long *old, const unsigned long *new, int bits);
extern int bitmap_bitremap(int oldbit,
const unsigned long *old, const unsigned long *new, int bits);
extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order);
extern void bitmap_release_region(unsigned long *bitmap, int pos, int order);
extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order);
#define BITMAP_LAST_WORD_MASK(nbits) \
( \
((nbits) % BITS_PER_LONG) ? \
(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL \
)
static inline void bitmap_zero(unsigned long *dst, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = 0UL;
else {
int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
memset(dst, 0, len);
}
}
static inline void bitmap_fill(unsigned long *dst, int nbits)
{
size_t nlongs = BITS_TO_LONGS(nbits);
if (nlongs > 1) {
int len = (nlongs - 1) * sizeof(unsigned long);
memset(dst, 0xff, len);
}
dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits);
}
static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src;
else {
int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
memcpy(dst, src, len);
}
}
static inline void bitmap_and(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src1 & *src2;
else
__bitmap_and(dst, src1, src2, nbits);
}
static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src1 | *src2;
else
__bitmap_or(dst, src1, src2, nbits);
}
static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src1 ^ *src2;
else
__bitmap_xor(dst, src1, src2, nbits);
}
static inline void bitmap_andnot(unsigned long *dst, const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src1 & ~(*src2);
else
__bitmap_andnot(dst, src1, src2, nbits);
}
static inline void bitmap_complement(unsigned long *dst, const unsigned long *src,
int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits);
else
__bitmap_complement(dst, src, nbits);
}
static inline int bitmap_equal(const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits));
else
return __bitmap_equal(src1, src2, nbits);
}
static inline int bitmap_intersects(const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;
else
return __bitmap_intersects(src1, src2, nbits);
}
static inline int bitmap_subset(const unsigned long *src1,
const unsigned long *src2, int nbits)
{
if (nbits <= BITS_PER_LONG)
return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits));
else
return __bitmap_subset(src1, src2, nbits);
}
static inline int bitmap_empty(const unsigned long *src, int nbits)
{
if (nbits <= BITS_PER_LONG)
return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
else
return __bitmap_empty(src, nbits);
}
static inline int bitmap_full(const unsigned long *src, int nbits)
{
if (nbits <= BITS_PER_LONG)
return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
else
return __bitmap_full(src, nbits);
}
static inline int bitmap_weight(const unsigned long *src, int nbits)
{
if (nbits <= BITS_PER_LONG)
return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));
return __bitmap_weight(src, nbits);
}
static inline void bitmap_shift_right(unsigned long *dst,
const unsigned long *src, int n, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = *src >> n;
else
__bitmap_shift_right(dst, src, n, nbits);
}
static inline void bitmap_shift_left(unsigned long *dst,
const unsigned long *src, int n, int nbits)
{
if (nbits <= BITS_PER_LONG)
*dst = (*src << n) & BITMAP_LAST_WORD_MASK(nbits);
else
__bitmap_shift_left(dst, src, n, nbits);
}
static inline int bitmap_parse(const char *buf, unsigned int buflen,
unsigned long *maskp, int nmaskbits)
{
return __bitmap_parse(buf, buflen, 0, maskp, nmaskbits);
}
static inline int bitmap_parselist(const char *buf, unsigned int buflen,
unsigned long *maskp, int nmaskbits)
{
return __bitmap_parselist(buf, buflen, 0, maskp, nmaskbits);
}
#endif /* __ASSEMBLY__ */
#endif /* __LINUX_BITMAP_H */
0707010000000A000081A40000000000000000000000016569B9D300004F6A000000000000000000000000000000000000002B00000000irqbalance-1.9.3.10.git+1a7d461/classify.c#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <assert.h>
#include <errno.h>
#include <libgen.h>
#include "irqbalance.h"
#include "types.h"
char *classes[] = {
"other",
"legacy",
"storage",
"video",
"ethernet",
"gbit-ethernet",
"10gbit-ethernet",
"virt-event",
0
};
static int map_class_to_level[8] =
{ BALANCE_PACKAGE, BALANCE_CACHE, BALANCE_CORE, BALANCE_CORE, BALANCE_CORE, BALANCE_CORE, BALANCE_CORE, BALANCE_CORE };
struct user_irq_policy {
int ban;
int level;
int numa_node_set;
int numa_node;
};
static GList *interrupts_db = NULL;
static GList *banned_irqs = NULL;
GList *cl_banned_irqs = NULL;
static GList *cl_banned_modules = NULL;
#define SYSFS_DIR "/sys"
#define SYSPCI_DIR "/sys/bus/pci/devices"
#define PCI_MAX_CLASS 0x14
#define PCI_MAX_SERIAL_SUBCLASS 0x81
#define PCI_INVAL_DATA 0xFFFFFFFF
struct pci_info {
unsigned short vendor;
unsigned short device;
unsigned short sub_vendor;
unsigned short sub_device;
unsigned int class;
};
/* PCI vendor ID, device ID */
#define PCI_VENDOR_PLX 0x10b5
#define PCI_DEVICE_PLX_PEX8619 0x8619
#define PCI_VENDOR_CAVIUM 0x177d
#define PCI_DEVICE_CAVIUM_CN61XX 0x0093
/* PCI subsystem vendor ID, subsystem device ID */
#define PCI_SUB_VENDOR_EMC 0x1120
#define PCI_SUB_DEVICE_EMC_055B 0x055b
#define PCI_SUB_DEVICE_EMC_0568 0x0568
#define PCI_SUB_DEVICE_EMC_dd00 0xdd00
/*
* Apply software workarounds for some special devices
*
* The world is not perfect and supplies us with broken PCI devices.
* Usually there are two sort of cases:
*
* 1. The device is special
* Before shipping the devices, PCI spec doesn't have the definitions.
*
* 2. Buggy PCI devices
* Some PCI devices don't follow the PCI class code definitions.
*/
static void apply_pci_quirks(const struct pci_info *pci, int *irq_class)
{
if ((pci->vendor == PCI_VENDOR_PLX) &&
(pci->device == PCI_DEVICE_PLX_PEX8619) &&
(pci->sub_vendor == PCI_SUB_VENDOR_EMC)) {
switch (pci->sub_device) {
case PCI_SUB_DEVICE_EMC_055B:
case PCI_SUB_DEVICE_EMC_dd00:
*irq_class = IRQ_SCSI;
break;
}
}
if ((pci->vendor == PCI_VENDOR_CAVIUM) &&
(pci->device == PCI_DEVICE_CAVIUM_CN61XX) &&
(pci->sub_vendor == PCI_SUB_VENDOR_EMC)) {
switch (pci->sub_device) {
case PCI_SUB_DEVICE_EMC_0568:
*irq_class = IRQ_SCSI;
break;
}
}
return;
}
/* Determin IRQ class based on PCI class code */
static int map_pci_irq_class(unsigned int pci_class)
{
unsigned int major = pci_class >> 16;
unsigned int sub = (pci_class & 0xFF00) >> 8;
int irq_class = IRQ_NODEF;
/*
* Class codes lifted from below PCI-SIG spec:
*
* PCI Code and ID Assignment Specification v1.5
*
* and mapped to irqbalance types here.
*
* IRQ_NODEF will go through classification by PCI sub-class code.
*/
static short major_class_codes[PCI_MAX_CLASS] = {
IRQ_OTHER,
IRQ_SCSI,
IRQ_ETH,
IRQ_VIDEO,
IRQ_OTHER,
IRQ_OTHER,
IRQ_LEGACY,
IRQ_OTHER,
IRQ_OTHER,
IRQ_LEGACY,
IRQ_OTHER,
IRQ_OTHER,
IRQ_NODEF,
IRQ_ETH,
IRQ_SCSI,
IRQ_OTHER,
IRQ_OTHER,
IRQ_OTHER,
IRQ_LEGACY,
IRQ_LEGACY,
};
/*
* All sub-class code for serial bus controllers.
* The major class code is 0xc.
*/
static short serial_sub_codes[PCI_MAX_SERIAL_SUBCLASS] = {
IRQ_LEGACY,
IRQ_LEGACY,
IRQ_LEGACY,
IRQ_LEGACY,
IRQ_SCSI,
IRQ_LEGACY,
IRQ_SCSI,
IRQ_LEGACY,
IRQ_LEGACY,
IRQ_LEGACY,
[0xa ... 0x7f] = IRQ_NODEF,
IRQ_LEGACY,
};
/*
* Check major class code first
*/
if (major >= PCI_MAX_CLASS)
return IRQ_NODEF;
switch (major) {
case 0xc: /* Serial bus class */
if (sub >= PCI_MAX_SERIAL_SUBCLASS)
return IRQ_NODEF;
irq_class = serial_sub_codes[sub];
break;
default: /* All other PCI classes */
irq_class = major_class_codes[major];
break;
}
return irq_class;
}
/* Read specific data from sysfs */
static unsigned int read_pci_data(const char *devpath, const char* file)
{
char path[PATH_MAX];
unsigned int data = PCI_INVAL_DATA;
sprintf(path, "%s/%s", devpath, file);
if (process_one_line(path, get_hex, &data) < 0)
log(TO_CONSOLE, LOG_WARNING, "PCI: can't get from file:%s\n", path);
return data;
}
/* Get pci information for IRQ classification */
static int get_pci_info(const char *devpath, struct pci_info *pci)
{
unsigned int data = PCI_INVAL_DATA;
if ((data = read_pci_data(devpath, "vendor")) == PCI_INVAL_DATA)
return -ENODEV;
pci->vendor = (unsigned short)data;
if ((data = read_pci_data(devpath, "device")) == PCI_INVAL_DATA)
return -ENODEV;
pci->device = (unsigned short)data;
if ((data = read_pci_data(devpath, "subsystem_vendor")) == PCI_INVAL_DATA)
return -ENODEV;
pci->sub_vendor = (unsigned short)data;
if ((data = read_pci_data(devpath, "subsystem_device")) == PCI_INVAL_DATA)
return -ENODEV;
pci->sub_device = (unsigned short)data;
if ((data = read_pci_data(devpath, "class")) == PCI_INVAL_DATA)
return -ENODEV;
pci->class = data;
return 0;
}
/* Return IRQ class for given devpath */
static int get_irq_class(const char *devpath)
{
int irq_class = IRQ_NODEF;
struct pci_info pci;
/* Get PCI info from sysfs */
if (get_pci_info(devpath, &pci) < 0)
return IRQ_NODEF;
/* Map PCI class code to irq class */
irq_class = map_pci_irq_class(pci.class);
if (irq_class < 0) {
log(TO_CONSOLE, LOG_WARNING, "Invalid PCI class code %d\n",
pci.class);
return IRQ_NODEF;
}
/* Reassign irq class for some buggy devices */
apply_pci_quirks(&pci, &irq_class);
return irq_class;
}
static gint compare_ints(gconstpointer a, gconstpointer b)
{
const struct irq_info *ai = a;
const struct irq_info *bi = b;
return ai->irq - bi->irq;
}
static void add_banned_irq(int irq, GList **list)
{
struct irq_info find, *new;
GList *entry;
find.irq = irq;
entry = g_list_find_custom(*list, &find, compare_ints);
if (entry)
return;
new = calloc(1, sizeof(struct irq_info));
if (!new) {
log(TO_CONSOLE, LOG_WARNING, "No memory to ban irq %d\n", irq);
return;
}
new->irq = irq;
new->flags |= IRQ_FLAG_BANNED;
*list = g_list_append(*list, new);
log(TO_CONSOLE, LOG_INFO, "IRQ %d was BANNED.\n", irq);
return;
}
void add_cl_banned_irq(int irq)
{
add_banned_irq(irq, &cl_banned_irqs);
}
gint substr_find(gconstpointer a, gconstpointer b)
{
if (strstr(b, a))
return 0;
else
return 1;
}
static void add_banned_module(char *modname, GList **modlist)
{
GList *entry;
char *newmod;
entry = g_list_find_custom(*modlist, modname, substr_find);
if (entry)
return;
newmod = strdup(modname);
if (!newmod) {
log(TO_CONSOLE, LOG_WARNING, "No memory to ban module %s\n", modname);
return;
}
*modlist = g_list_append(*modlist, newmod);
}
void add_cl_banned_module(char *modname)
{
add_banned_module(modname, &cl_banned_modules);
}
/*
* Inserts an irq_info struct into the intterupts_db list
* devpath points to the device directory in sysfs for the
* related device. NULL devpath means no sysfs entries for
* this irq.
*/
static struct irq_info *add_one_irq_to_db(const char *devpath, struct irq_info *hint, struct user_irq_policy *pol)
{
int irq = hint->irq;
struct irq_info *new;
int numa_node;
char path[PATH_MAX];
new = calloc(1, sizeof(struct irq_info));
if (!new)
return NULL;
new->irq = irq;
new->type = hint->type;
new->class = hint->class;
interrupts_db = g_list_append(interrupts_db, new);
/* Some special irqs have NULL devpath */
if (devpath != NULL) {
/* Map PCI class code to irq class */
int irq_class = get_irq_class(devpath);
if (irq_class < 0)
goto get_numa_node;
new->class = irq_class;
}
if (pol->level >= 0)
new->level = pol->level;
else
new->level = map_class_to_level[new->class];
get_numa_node:
numa_node = NUMA_NO_NODE;
if (numa_avail) {
if (devpath != NULL) {
sprintf(path, "%s/numa_node", devpath);
process_one_line(path, get_int, &numa_node);
} else {
sprintf(path, "/proc/irq/%i/node", irq);
process_one_line(path, get_int, &numa_node);
}
}
if (pol->numa_node_set == 1)
new->numa_node = get_numa_node(pol->numa_node);
else
new->numa_node = get_numa_node(numa_node);
if (!new->numa_node) {
log(TO_CONSOLE, LOG_WARNING, "IRQ %d has an unknown node\n", irq);
new->numa_node = get_numa_node(NUMA_NO_NODE);
}
cpus_setall(new->cpumask);
if (devpath != NULL) {
sprintf(path, "%s/local_cpus", devpath);
process_one_line(path, get_mask_from_bitmap, &new->cpumask);
}
log(TO_CONSOLE, LOG_INFO, "Adding IRQ %d to database\n", irq);
return new;
}
static void parse_user_policy_key(char *buf, int irq, struct user_irq_policy *pol)
{
char *key, *value, *end;
char *levelvals[] = { "none", "package", "cache", "core" };
int idx;
int key_set = 1;
key = buf;
value = strchr(buf, '=');
if (!value) {
log(TO_SYSLOG, LOG_WARNING, "Bad format for policy, ignoring: %s\n", buf);
return;
}
/* NULL terminate the key and advance value to the start of the value
* string
*/
*value = '\0';
value++;
end = strchr(value, '\n');
if (end)
*end = '\0';
if (!strcasecmp("ban", key)) {
if (!strcasecmp("false", value))
pol->ban = 0;
else if (!strcasecmp("true", value))
pol->ban = 1;
else {
key_set = 0;
log(TO_ALL, LOG_WARNING, "Unknown value for ban policy: %s\n", value);
}
} else if (!strcasecmp("balance_level", key)) {
for (idx=0; idx<4; idx++) {
if (!strcasecmp(levelvals[idx], value))
break;
}
if (idx>3) {
key_set = 0;
log(TO_ALL, LOG_WARNING, "Bad value for balance_level policy: %s\n", value);
} else
pol->level = idx;
} else if (!strcasecmp("numa_node", key)) {
idx = strtoul(value, NULL, 10);
if (!get_numa_node(idx)) {
log(TO_ALL, LOG_WARNING, "NUMA node %d doesn't exist\n",
idx);
return;
}
pol->numa_node = idx;
pol->numa_node_set = 1;
} else {
key_set = 0;
log(TO_ALL, LOG_WARNING, "Unknown key returned, ignoring: %s\n", key);
}
if (key_set)
log(TO_ALL, LOG_INFO, "IRQ %d: Override %s to %s\n", irq, key, value);
}
static int run_script_for_policy(char *script, char *path, int irq, struct user_irq_policy *pol)
{
char *cmd;
char *brc;
FILE *output;
char buffer[128];
cmd = alloca(strlen(path)+strlen(script)+64);
if (!cmd)
return -1;
sprintf(cmd, "exec %s %s %d", script, path, irq);
output = popen(cmd, "r");
if (!output) {
log(TO_ALL, LOG_WARNING, "Unable to execute user policy script %s\n", script);
return 1; /* tell caller to ignore this script */
}
while(!feof(output)) {
brc = fgets(buffer, 128, output);
if (brc)
parse_user_policy_key(brc, irq, pol);
}
return WEXITSTATUS(pclose(output));
}
/*
* Calls out to a possibly user defined script to get user assigned policy
* aspects for a given irq. A value of -1 in a given field indicates no
* policy was given and that system defaults should be used
*/
static void get_irq_user_policy(char *path, int irq, struct user_irq_policy *pol)
{
struct stat sbuf;
DIR *poldir;
struct dirent *entry;
int ret;
char script[1024];
memset(pol, -1, sizeof(struct user_irq_policy));
/* Return defaults if no script was given */
if (!polscript)
return;
if (stat(polscript, &sbuf))
return;
/* Use SYSFS_DIR for irq has no sysfs entries */
if (!path)
path = SYSFS_DIR;
if (!S_ISDIR(sbuf.st_mode)) {
if (run_script_for_policy(polscript, path, irq, pol) != 0) {
log(TO_CONSOLE, LOG_ERR, "policy script returned non-zero code! skipping user policy\n");
memset(pol, -1, sizeof(struct user_irq_policy));
}
} else {
/* polscript is a directory, user multiple script semantics */
poldir = opendir(polscript);
if (poldir) {
while ((entry = readdir(poldir)) != NULL) {
snprintf(script, sizeof(script), "%s/%s", polscript, entry->d_name);
if (stat(script, &sbuf))
continue;
if (S_ISREG(sbuf.st_mode)) {
if (!(sbuf.st_mode & S_IXUSR)) {
log(TO_CONSOLE, LOG_DEBUG, "Skipping script %s due to lack of executable permission\n", script);
continue;
}
memset(pol, -1, sizeof(struct user_irq_policy));
ret = run_script_for_policy(script, path, irq, pol);
if ((ret < 0) || (ret >= 2)) {
log(TO_CONSOLE, LOG_ERR, "Error executing policy script %s : %d\n", script, ret);
continue;
}
/* a ret of 1 means this script isn't
* for this irq
*/
if (ret == 1)
continue;
log(TO_CONSOLE, LOG_DEBUG, "Accepting script %s to define policy for irq %d\n", script, irq);
break;
}
}
closedir(poldir);
}
}
}
static int check_for_module_ban(char *name)
{
GList *entry;
entry = g_list_find_custom(cl_banned_modules, name, substr_find);
if (entry)
return 1;
else
return 0;
}
static int check_for_irq_ban(struct irq_info *irq, char *mod)
{
GList *entry;
/*
* Check to see if we banned this irq on the command line
*/
entry = g_list_find_custom(cl_banned_irqs, irq, compare_ints);
if (entry)
return 1;
/*
* Check to see if we banned module which the irq belongs to.
*/
if (mod != NULL && strlen(mod) > 0 && check_for_module_ban(mod))
return 1;
/*
* Check if any banned modules are substrings in irq->name
*/
if (irq->name != NULL && strlen(irq->name) > 0 && check_for_module_ban(irq->name))
return 1;
return 0;
}
static void add_new_irq(char *path, struct irq_info *hint)
{
struct irq_info *new;
struct user_irq_policy pol;
int irq = hint->irq;
char buf[PATH_MAX], drvpath[PATH_MAX];
char *mod = NULL;
int ret;
new = get_irq_info(irq);
if (new)
return;
if (path) {
sprintf(buf, "%s/driver", path);
ret = readlink(buf, drvpath, PATH_MAX);
if (ret > 0 && ret < PATH_MAX) {
drvpath[ret] = '\0';
mod = basename(drvpath);
}
}
/* Set NULL devpath for the irq has no sysfs entries */
get_irq_user_policy(path, irq, &pol);
if ((pol.ban == 1) || check_for_irq_ban(hint, mod)) { /*FIXME*/
add_banned_irq(irq, &banned_irqs);
new = get_irq_info(irq);
} else
new = add_one_irq_to_db(path, hint, &pol);
if (!new)
log(TO_CONSOLE, LOG_WARNING, "add_new_irq: Failed to add irq %d\n", irq);
}
/*
* Figures out which interrupt(s) relate to the device we"re looking at in dirname
*/
static void build_one_dev_entry(const char *dirname, int build_irq)
{
struct dirent *entry;
DIR *msidir;
int irqnum;
struct irq_info hint = {0};
char path[PATH_MAX];
char devpath[PATH_MAX];
sprintf(path, "%s/%s/msi_irqs", SYSPCI_DIR, dirname);
sprintf(devpath, "%s/%s", SYSPCI_DIR, dirname);
/* Needs to be further classified */
hint.class = IRQ_OTHER;
msidir = opendir(path);
if (msidir) {
do {
entry = readdir(msidir);
if (!entry)
break;
irqnum = strtol(entry->d_name, NULL, 10);
/* If build_irq is valid, only add irq when it's number equals to build_irq */
if (irqnum && ((build_irq < 0) || (irqnum == build_irq))) {
hint.irq = irqnum;
hint.type = IRQ_TYPE_MSIX;
add_new_irq(devpath, &hint);
if (build_irq >= 0) {
log(TO_CONSOLE, LOG_INFO, "Hotplug dev irq: %d finished.\n", irqnum);
break;
}
}
} while (entry != NULL);
closedir(msidir);
return;
}
sprintf(path, "%s/%s/irq", SYSPCI_DIR, dirname);
if (process_one_line(path, get_int, &irqnum) < 0)
goto done;
/*
* no pci device has irq 0
* irq 255 is invalid on x86/x64 architectures
*/
#if defined(__i386__) || defined(__x86_64__)
if (irqnum && irqnum != 255) {
#else
if (irqnum) {
#endif
/* If build_irq is valid, only add irq when it's number equals to build_irq */
if ((build_irq < 0) || (irqnum == build_irq)) {
hint.irq = irqnum;
hint.type = IRQ_TYPE_LEGACY;
add_new_irq(devpath, &hint);
if (build_irq >= 0)
log(TO_CONSOLE, LOG_INFO, "Hotplug dev irq: %d finished.\n", irqnum);
}
}
done:
return;
}
static void free_irq(struct irq_info *info, void *data __attribute__((unused)))
{
free(info);
}
void free_irq_db(void)
{
for_each_irq(NULL, free_irq, NULL);
g_list_free(interrupts_db);
interrupts_db = NULL;
for_each_irq(banned_irqs, free_irq, NULL);
g_list_free(banned_irqs);
banned_irqs = NULL;
g_list_free(rebalance_irq_list);
rebalance_irq_list = NULL;
}
void free_cl_opts(void)
{
g_list_free_full(cl_banned_modules, free);
g_list_free_full(cl_banned_irqs, free);
}
static void add_missing_irq(struct irq_info *info, void *data __attribute__((unused)))
{
add_new_irq(NULL, info);
}
static void free_tmp_irqs(gpointer data)
{
struct irq_info *info = data;
free(info->name);
free(info);
}
static struct irq_info * build_dev_irqs(int build_irq)
{
DIR *devdir;
struct dirent *entry;
struct irq_info *new_irq = NULL;
devdir = opendir(SYSPCI_DIR);
if (devdir) {
do {
entry = readdir(devdir);
if (!entry)
break;
/* when hotplug irqs, we add one irq at one time */
build_one_dev_entry(entry->d_name, build_irq);
if (build_irq >= 0) {
new_irq = get_irq_info(build_irq);
if (new_irq)
break;
}
} while (entry != NULL);
closedir(devdir);
}
return new_irq;
}
int proc_irq_hotplug(char *savedline, int irq, struct irq_info **pinfo)
{
struct irq_info tmp_info = {0};
/* firstly, init irq info by read device info */
*pinfo = build_dev_irqs(irq);
if (*pinfo == NULL) {
/* secondly, init irq info by parse savedline */
init_irq_class_and_type(savedline, &tmp_info, irq);
add_new_irq(NULL, &tmp_info);
free(tmp_info.name);
*pinfo = get_irq_info(irq);
}
if (*pinfo == NULL) {
return -1;
}
force_rebalance_irq(*pinfo, NULL);
return 0;
}
void rebuild_irq_db(void)
{
GList *tmp_irqs = NULL;
free_irq_db();
tmp_irqs = collect_full_irq_list();
build_dev_irqs(-1);
for_each_irq(tmp_irqs, add_missing_irq, NULL);
g_list_free_full(tmp_irqs, free_tmp_irqs);
}
void for_each_irq(GList *list, void (*cb)(struct irq_info *info, void *data), void *data)
{
GList *entry = g_list_first(list ? list : interrupts_db);
GList *next;
while (entry) {
next = g_list_next(entry);
cb(entry->data, data);
entry = next;
}
}
struct irq_info *get_irq_info(int irq)
{
GList *entry;
struct irq_info find;
find.irq = irq;
entry = g_list_find_custom(interrupts_db, &find, compare_ints);
if (!entry)
entry = g_list_find_custom(banned_irqs, &find, compare_ints);
return entry ? entry->data : NULL;
}
void migrate_irq(GList **from, GList **to, struct irq_info *info)
{
GList *entry;
struct irq_info find, *tmp;
find.irq = info->irq;
entry = g_list_find_custom(*from, &find, compare_ints);
if (!entry)
return;
tmp = entry->data;
*from = g_list_delete_link(*from, entry);
*to = g_list_append(*to, tmp);
info->moved = 1;
}
static gint sort_irqs(gconstpointer A, gconstpointer B)
{
struct irq_info *a, *b;
a = (struct irq_info*)A;
b = (struct irq_info*)B;
if (a->class < b->class)
return 1;
if (a->class > b->class)
return -1;
if (a->load < b->load)
return 1;
if (a->load > b->load)
return -1;
if (a < b)
return 1;
return -1;
}
void sort_irq_list(GList **list)
{
*list = g_list_sort(*list, sort_irqs);
}
static void remove_no_existing_irq(struct irq_info *info, void *data __attribute__((unused)))
{
GList *entry = NULL;
if (info->existing) {
/* clear existing flag for next detection */
info->existing = 0;
return;
}
entry = g_list_find_custom(interrupts_db, info, compare_ints);
if (entry) {
interrupts_db = g_list_delete_link(interrupts_db, entry);
log(TO_CONSOLE, LOG_INFO, "IRQ %d is removed from interrupts_db.\n", info->irq);
}
entry = g_list_find_custom(banned_irqs, info, compare_ints);
if (entry) {
banned_irqs = g_list_delete_link(banned_irqs, entry);
log(TO_CONSOLE, LOG_INFO, "IRQ %d is removed from banned_irqs.\n", info->irq);
}
entry = g_list_find_custom(rebalance_irq_list, info, compare_ints);
if (entry)
rebalance_irq_list = g_list_delete_link(rebalance_irq_list, entry);
if(info->assigned_obj) {
entry = g_list_find_custom(info->assigned_obj->interrupts, info, compare_ints);
if (entry) {
info->assigned_obj->interrupts = g_list_delete_link(info->assigned_obj->interrupts, entry);
}
}
free_irq(info, NULL);
}
void clear_no_existing_irqs(void)
{
for_each_irq(NULL, remove_no_existing_irq, NULL);
if (banned_irqs) {
for_each_irq(banned_irqs, remove_no_existing_irq, NULL);
}
}
0707010000000B000081A40000000000000000000000016569B9D300000E27000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/configure.acAC_INIT(irqbalance,1.9.3)
AC_PREREQ(2.69)dnl
AC_CONFIG_HEADERS(config.h)
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([foreign] [subdir-objects])
AM_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_AWK
AC_HEADER_STDC
AC_CHECK_HEADERS([numa.h])
AC_CHECK_FUNCS(getopt_long)
AC_ARG_ENABLE([staticbuild],
AS_HELP_STRING([--enable-staticbuild], [enable static builds(default disabled)]))
AM_CONDITIONAL([STATICBUILD], [test "x$enable_staticbuild" = "xyes"])
# If we requested static building, enable that in pkg-config
AS_IF([test "x$enable_staticbuild" = "xyes"], [
PKG_CONFIG="$PKG_CONFIG --static"],[])
AC_ARG_ENABLE([numa],
AS_HELP_STRING([--disable-numa], [enable numa support (default is auto)]))
AS_IF([test "$enable_numa" = "no"],[
ac_cv_header_numa_h=no
ac_cv_lib_numa_numa_available=no
])
PKG_CHECK_MODULES([NUMA], [numa], [has_numa=yes], [AC_CHECK_LIB(numa, numa_available)])
AC_CHECK_LIB(m, floor)
PKG_CHECK_MODULES([GLIB2], [glib-2.0], [], [AC_MSG_ERROR([glib-2.0 is required])])
PKG_CHECK_MODULES([NCURSESW], [ncursesw], [has_ncursesw=yes], [AC_CHECK_LIB(curses, mvprintw)])
AS_IF([test "x$has_ncursesw" = "xyes"], [
AC_SUBST([NCURSESW_CFLAGS])
AC_SUBST([NCURSESW_LIBS])
LIBS="$LIBS $NCURSESW_LIBS"
AC_SUBST([LIBS])
])
AC_CANONICAL_HOST
AC_ARG_ENABLE(thermal,
AS_HELP_STRING([--enable-thermal], [enable thermal event support [default=auto]]),,
AS_IF([test x"$host_cpu" = x"x86_64"], [enable_thermal=yes], [enable_thermal=no])
)
AS_IF([test x"$enable_thermal" = x"yes" && test x"$host_cpu" != x"x86_64"],
AC_MSG_ERROR([no thermal events support on $host_cpu systems.]),
)
AS_IF([test x"$enable_thermal" = x"yes"],
[PKG_CHECK_MODULES([LIBNL3], [libnl-3.0 libnl-genl-3.0], [have_thermal=yes],
AC_MSG_NOTICE([no thermal event support as libnl-3.0 is unavailable.])
)]
)
AS_IF([test "x$have_thermal" = xyes],
AC_DEFINE([HAVE_THERMAL], 1, [Build irqbalance to support thermal events])
)
AM_CONDITIONAL([THERMAL], [test "x$have_thermal" = xyes])
AC_C_CONST
AC_C_INLINE
AM_PROG_CC_C_O
AC_ARG_WITH([irqbalance-ui],
[AS_HELP_STRING([--without-irqbalance-ui],
[Dont build the irqbalance ui component])],
[with_irqbalanceui=$withval], [with_irqbalanceui=yes])
AS_IF(
[test "x$with_irqbalanceui" = "xyes"], [
AC_DEFINE([HAVE_IRQBALANCEUI], 1, [Build irqbalance ui component.])
])
AM_CONDITIONAL([IRQBALANCEUI], [test x$with_irqbalanceui = xyes])
AC_ARG_WITH([systemd],
[ AS_HELP_STRING([--with-systemd],[Add systemd-lib support])]
)
AS_IF(
[test "x$with_systemd" = xyes], [
PKG_CHECK_MODULES([SYSTEMD], [libsystemd], [journal_lib=yes], [journal_lib=no])
AS_IF([test "x$journal_lib" != "xyes"], [
PKG_CHECK_MODULES([SYSTEMD], [libsystemd-journal], [journal_lib=yes])
])
AC_DEFINE(HAVE_LIBSYSTEMD, 1, [systemd support])
AC_CHECK_LIB([systemd], [sd_journal_print_with_location])
AC_CHECK_LIB([systemd], [sd_journal_print])
])
AC_ARG_WITH([libcap-ng],
AS_HELP_STRING([libcap-ng], [Add libcap-ng-support @<:@default=auto@:>@]))
AS_IF(
[test "x$with_libcap_ng" != "xno"],
[
PKG_CHECK_MODULES([LIBCAP_NG], [libcap-ng],
[AC_DEFINE(HAVE_LIBCAP_NG,1,[libcap-ng support])],
[
AS_IF(
[test "x$libcap_ng" = "xyes"],
[
AC_MSG_ERROR([libcap-ng not found])
]
)
]
)
]
)
AC_OUTPUT(Makefile tests/Makefile)
AC_MSG_NOTICE()
AC_MSG_NOTICE([irqbalance Version: $VERSION])
AC_MSG_NOTICE([Target: $target])
AC_MSG_NOTICE([Installation prefix: $prefix])
AC_MSG_NOTICE([Compiler: $CC])
AC_MSG_NOTICE([Compiler flags: $CFLAGS])
0707010000000C000081A40000000000000000000000016569B9D3000000BA000000000000000000000000000000000000002C00000000irqbalance-1.9.3.10.git+1a7d461/constants.h#ifndef __INCLUDE_GUARD_CONSTANTS_H
#define __INCLUDE_GUARD_CONSTANTS_H
/* interval between rebalance attempts in seconds */
#define SLEEP_INTERVAL 10
#define NSEC_PER_SEC 1e9
#endif
0707010000000D000041ED0000000000000000000000026569B9D300000000000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/contrib0707010000000E000081A40000000000000000000000016569B9D30000008A000000000000000000000000000000000000002F00000000irqbalance-1.9.3.10.git+1a7d461/contrib/READMEThis directory contains meson build instructions for irqbalance. This is here to see if there is any interest from
the general community.
0707010000000F000081A40000000000000000000000016569B9D300000854000000000000000000000000000000000000003400000000irqbalance-1.9.3.10.git+1a7d461/contrib/meson.buildproject('irqbalance', 'c', version: '1.9.3', default_options: ['warning_level=1'])
cc = meson.get_compiler('c')
glib_dep = dependency('glib-2.0')
m_dep = cc.find_library('m', required: false)
capng_dep = dependency('libcap-ng', required: get_option('capng'))
ncurses_dep = dependency('curses', required: get_option('ui'))
numa_dep = dependency('numa', required: get_option('numa'))
libnl_3_dep = dependency('libnl-3.0', required: get_option('thermal'))
libnl_genl_3_dep = dependency('libnl-genl-3.0', required: get_option('thermal'))
systemd_dep = dependency('libsystemd', required: get_option('systemd'))
cdata = configuration_data()
cdata.set('HAVE_GETOPT_LONG', cc.has_function('getopt_long'))
cdata.set('HAVE_IRQBALANCEUI', ncurses_dep.found())
cdata.set('HAVE_NUMA_H', cc.has_header('numa.h') and numa_dep.found())
cdata.set('HAVE_THERMAL', libnl_3_dep.found() and libnl_genl_3_dep.found())
cdata.set('HAVE_LIBCAP_NG', capng_dep.found())
cdata.set('HAVE_LIBSYSTEMD', systemd_dep.found())
cdata.set_quoted('VERSION', meson.project_version())
cfile = configure_file(output: 'config.h', configuration: cdata)
if cdata.get('HAVE_IRQBALANCEUI')
add_project_arguments('-D_GNU_SOURCE', language: 'c')
executable(
'irqbalance-ui',
'../ui/helpers.c',
'../ui/irqbalance-ui.c',
'../ui/ui.c',
dependencies: [glib_dep, ncurses_dep],
install: true,
)
install_man(
'../irqbalance-ui.1',
install_dir: get_option('mandir') + '/man1',
install_mode: 'rw-r--r--',
locale: 'en',
)
endif
irqbalance_sources = [
'../activate.c',
'../bitmap.c',
'../classify.c',
'../cputree.c',
'../irqbalance.c',
'../irqlist.c',
'../numa.c',
'../placement.c',
'../procinterrupts.c',
]
if libnl_3_dep.found() and libnl_genl_3_dep.found()
irqbalance_sources += [
'../thermal.c',
]
endif
executable(
'irqbalance',
irqbalance_sources,
dependencies: [glib_dep, m_dep, capng_dep, libnl_3_dep, libnl_genl_3_dep, numa_dep, systemd_dep],
install: true,
)
install_man(
'../irqbalance.1',
install_dir: get_option('mandir') + '/man1',
install_mode: 'rw-r--r--',
locale: 'en',
)
07070100000010000081A40000000000000000000000016569B9D3000001BD000000000000000000000000000000000000003A00000000irqbalance-1.9.3.10.git+1a7d461/contrib/meson_options.txtoption('capng', type : 'feature',
description : 'Build with libcap-ng support',
)
option('numa', type : 'feature', value: 'enabled',
description : 'Build with numa support',
)
option('systemd', type : 'feature', value: 'enabled',
description : 'Build with systemd support',
)
option('thermal', type : 'feature',
description : 'Build with thermal support',
)
option('ui', type : 'feature',
description : 'Build the UI component',
)
07070100000011000081A40000000000000000000000016569B9D3000029F3000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/cpumask.h#ifndef __LINUX_CPUMASK_H
#define __LINUX_CPUMASK_H
#define NR_CPUS 4096
/*
* Cpumasks provide a bitmap suitable for representing the
* set of CPU's in a system, one bit position per CPU number.
*
* See detailed comments in the file linux/bitmap.h describing the
* data type on which these cpumasks are based.
*
* For details of cpumask_scnprintf() and cpumask_parse_user(),
* see bitmap_scnprintf() and bitmap_parse_user() in lib/bitmap.c.
* For details of cpulist_scnprintf() and cpulist_parse(), see
* bitmap_scnlistprintf() and bitmap_parselist(), also in bitmap.c.
* For details of cpu_remap(), see bitmap_bitremap in lib/bitmap.c
* For details of cpus_remap(), see bitmap_remap in lib/bitmap.c.
*
* The available cpumask operations are:
*
* void cpu_set(cpu, mask) turn on bit 'cpu' in mask
* void cpu_clear(cpu, mask) turn off bit 'cpu' in mask
* void cpus_setall(mask) set all bits
* void cpus_clear(mask) clear all bits
* int cpu_isset(cpu, mask) true iff bit 'cpu' set in mask
* int cpu_test_and_set(cpu, mask) test and set bit 'cpu' in mask
*
* void cpus_and(dst, src1, src2) dst = src1 & src2 [intersection]
* void cpus_or(dst, src1, src2) dst = src1 | src2 [union]
* void cpus_xor(dst, src1, src2) dst = src1 ^ src2
* void cpus_andnot(dst, src1, src2) dst = src1 & ~src2
* void cpus_complement(dst, src) dst = ~src
*
* int cpus_equal(mask1, mask2) Does mask1 == mask2?
* int cpus_intersects(mask1, mask2) Do mask1 and mask2 intersect?
* int cpus_subset(mask1, mask2) Is mask1 a subset of mask2?
* int cpus_empty(mask) Is mask empty (no bits sets)?
* int cpus_full(mask) Is mask full (all bits sets)?
* int cpus_weight(mask) Hamming weigh - number of set bits
*
* void cpus_shift_right(dst, src, n) Shift right
* void cpus_shift_left(dst, src, n) Shift left
* void cpus_copy(dst, src) Copy from src to dst
*
* int first_cpu(mask) Number lowest set bit, or NR_CPUS
* int next_cpu(cpu, mask) Next cpu past 'cpu', or NR_CPUS
*
* cpumask_t cpumask_of_cpu(cpu) Return cpumask with bit 'cpu' set
* CPU_MASK_ALL Initializer - all bits set
* CPU_MASK_NONE Initializer - no bits set
* unsigned long *cpus_addr(mask) Array of unsigned long's in mask
*
* int cpumask_scnprintf(buf, len, mask) Format cpumask for printing
* int cpumask_parse_user(ubuf, ulen, mask) Parse ascii string as cpumask
* int cpulist_scnprintf(buf, len, mask) Format cpumask as list for printing
* int cpulist_parse(buf, map) Parse ascii string as cpulist
* int cpu_remap(oldbit, old, new) newbit = map(old, new)(oldbit)
* int cpus_remap(dst, src, old, new) *dst = map(old, new)(src)
*
* for_each_cpu_mask(cpu, mask) for-loop cpu over mask
*
* int num_online_cpus() Number of online CPUs
*
* int cpu_online(cpu) Is some cpu online?
*
* for_each_online_cpu(cpu) for-loop cpu over cpu_online_map
*
* Subtlety:
* 1) The 'type-checked' form of cpu_isset() causes gcc (3.3.2, anyway)
* to generate slightly worse code. Note for example the additional
* 40 lines of assembly code compiling the "for each possible cpu"
* loops buried in the disk_stat_read() macros calls when compiling
* drivers/block/genhd.c (arch i386, CONFIG_SMP=y). So use a simple
* one-line #define for cpu_isset(), instead of wrapping an inline
* inside a macro, the way we do the other calls.
*/
#include "bitmap.h"
typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t;
extern cpumask_t _unused_cpumask_arg_;
#define cpu_set(cpu, dst) __cpu_set((cpu), &(dst))
static inline void __cpu_set(int cpu, volatile cpumask_t *dstp)
{
set_bit(cpu, dstp->bits);
}
#define cpu_clear(cpu, dst) __cpu_clear((cpu), &(dst))
static inline void __cpu_clear(int cpu, volatile cpumask_t *dstp)
{
clear_bit(cpu, dstp->bits);
}
#define cpus_setall(dst) __cpus_setall(&(dst), NR_CPUS)
static inline void __cpus_setall(cpumask_t *dstp, int nbits)
{
bitmap_fill(dstp->bits, nbits);
}
#define cpus_clear(dst) __cpus_clear(&(dst), NR_CPUS)
static inline void __cpus_clear(cpumask_t *dstp, int nbits)
{
bitmap_zero(dstp->bits, nbits);
}
/* No static inline type checking - see Subtlety (1) above. */
#define cpu_isset(cpu, cpumask) test_bit((cpu), (cpumask).bits)
#define cpus_and(dst, src1, src2) __cpus_and(&(dst), &(src1), &(src2), NR_CPUS)
static inline void __cpus_and(cpumask_t *dstp, const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
bitmap_and(dstp->bits, src1p->bits, src2p->bits, nbits);
}
#define cpus_or(dst, src1, src2) __cpus_or(&(dst), &(src1), &(src2), NR_CPUS)
static inline void __cpus_or(cpumask_t *dstp, const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
bitmap_or(dstp->bits, src1p->bits, src2p->bits, nbits);
}
#define cpus_xor(dst, src1, src2) __cpus_xor(&(dst), &(src1), &(src2), NR_CPUS)
static inline void __cpus_xor(cpumask_t *dstp, const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
bitmap_xor(dstp->bits, src1p->bits, src2p->bits, nbits);
}
#define cpus_andnot(dst, src1, src2) \
__cpus_andnot(&(dst), &(src1), &(src2), NR_CPUS)
static inline void __cpus_andnot(cpumask_t *dstp, const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
bitmap_andnot(dstp->bits, src1p->bits, src2p->bits, nbits);
}
#define cpus_complement(dst, src) __cpus_complement(&(dst), &(src), NR_CPUS)
static inline void __cpus_complement(cpumask_t *dstp,
const cpumask_t *srcp, int nbits)
{
bitmap_complement(dstp->bits, srcp->bits, nbits);
}
#define cpus_equal(src1, src2) __cpus_equal(&(src1), &(src2), NR_CPUS)
static inline int __cpus_equal(const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
return bitmap_equal(src1p->bits, src2p->bits, nbits);
}
#define cpus_intersects(src1, src2) __cpus_intersects(&(src1), &(src2), NR_CPUS)
static inline int __cpus_intersects(const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
return bitmap_intersects(src1p->bits, src2p->bits, nbits);
}
#define cpus_subset(src1, src2) __cpus_subset(&(src1), &(src2), NR_CPUS)
static inline int __cpus_subset(const cpumask_t *src1p,
const cpumask_t *src2p, int nbits)
{
return bitmap_subset(src1p->bits, src2p->bits, nbits);
}
#define cpus_empty(src) __cpus_empty(&(src), NR_CPUS)
static inline int __cpus_empty(const cpumask_t *srcp, int nbits)
{
return bitmap_empty(srcp->bits, nbits);
}
#define cpus_full(cpumask) __cpus_full(&(cpumask), NR_CPUS)
static inline int __cpus_full(const cpumask_t *srcp, int nbits)
{
return bitmap_full(srcp->bits, nbits);
}
#define cpus_weight(cpumask) __cpus_weight(&(cpumask), NR_CPUS)
static inline int __cpus_weight(const cpumask_t *srcp, int nbits)
{
return bitmap_weight(srcp->bits, nbits);
}
#define cpus_shift_right(dst, src, n) \
__cpus_shift_right(&(dst), &(src), (n), NR_CPUS)
static inline void __cpus_shift_right(cpumask_t *dstp,
const cpumask_t *srcp, int n, int nbits)
{
bitmap_shift_right(dstp->bits, srcp->bits, n, nbits);
}
#define cpus_shift_left(dst, src, n) \
__cpus_shift_left(&(dst), &(src), (n), NR_CPUS)
static inline void __cpus_shift_left(cpumask_t *dstp,
const cpumask_t *srcp, int n, int nbits)
{
bitmap_shift_left(dstp->bits, srcp->bits, n, nbits);
}
#define cpus_copy(dst, src) \
__cpus_copy(&(dst), &(src), NR_CPUS)
static inline void __cpus_copy(cpumask_t *dstp,
const cpumask_t *srcp, int nbits)
{
bitmap_copy(dstp->bits, srcp->bits, nbits);
}
static inline int __first_cpu(const cpumask_t *srcp)
{
return ffs(*srcp->bits)-1;
}
#define first_cpu(src) __first_cpu(&(src))
int __next_cpu(int n, const cpumask_t *srcp);
#define next_cpu(n, src) __next_cpu((n), &(src))
#define cpumask_of_cpu(cpu) \
({ \
typeof(_unused_cpumask_arg_) m; \
if (sizeof(m) == sizeof(unsigned long)) { \
m.bits[0] = 1UL<<(cpu); \
} else { \
cpus_clear(m); \
cpu_set((cpu), m); \
} \
m; \
})
#define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS)
#if 0
#define CPU_MASK_ALL \
(cpumask_t) { { \
[BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
} }
#else
#define CPU_MASK_ALL \
(cpumask_t) { { \
[0 ... BITS_TO_LONGS(NR_CPUS)-2] = ~0UL, \
[BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
} }
#endif
#define CPU_MASK_NONE \
(cpumask_t) { { \
[0 ... BITS_TO_LONGS(NR_CPUS)-1] = 0UL \
} }
#define CPU_MASK_CPU0 \
(cpumask_t) { { \
[0] = 1UL \
} }
#define cpus_addr(src) ((src).bits)
#define cpumask_scnprintf(buf, len, src) \
__cpumask_scnprintf((buf), (len), &(src), NR_CPUS)
static inline int __cpumask_scnprintf(char *buf, int len,
const cpumask_t *srcp, int nbits)
{
return bitmap_scnprintf(buf, len, srcp->bits, nbits);
}
#define cpumask_parse_user(ubuf, ulen, dst) \
__cpumask_parse_user((ubuf), (ulen), &(dst), NR_CPUS)
static inline int __cpumask_parse_user(const char *buf, int len,
cpumask_t *dstp, int nbits)
{
return bitmap_parse(buf, len, dstp->bits, nbits);
}
#define cpulist_scnprintf(buf, len, src) \
__cpulist_scnprintf((buf), (len), &(src), NR_CPUS)
static inline int __cpulist_scnprintf(char *buf, int len,
const cpumask_t *srcp, int nbits)
{
return bitmap_scnlistprintf(buf, len, srcp->bits, nbits);
}
#define cpulist_parse(buf, len, dst) __cpulist_parse((buf), (len), &(dst), NR_CPUS)
static inline int __cpulist_parse(const char *buf, int len, cpumask_t *dstp, int nbits)
{
return bitmap_parselist(buf, len, dstp->bits, nbits);
}
#define cpu_remap(oldbit, old, new) \
__cpu_remap((oldbit), &(old), &(new), NR_CPUS)
static inline int __cpu_remap(int oldbit,
const cpumask_t *oldp, const cpumask_t *newp, int nbits)
{
return bitmap_bitremap(oldbit, oldp->bits, newp->bits, nbits);
}
#define cpus_remap(dst, src, old, new) \
__cpus_remap(&(dst), &(src), &(old), &(new), NR_CPUS)
static inline void __cpus_remap(cpumask_t *dstp, const cpumask_t *srcp,
const cpumask_t *oldp, const cpumask_t *newp, int nbits)
{
bitmap_remap(dstp->bits, srcp->bits, oldp->bits, newp->bits, nbits);
}
#if NR_CPUS > 1
#define for_each_cpu_mask(cpu, mask) \
for ((cpu) = first_cpu(mask); \
(cpu) < NR_CPUS; \
(cpu) = next_cpu((cpu), (mask)))
#else /* NR_CPUS == 1 */
#define for_each_cpu_mask(cpu, mask) \
for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
#endif /* NR_CPUS */
/*
* cpu_online_map - has bit 'cpu' set iff cpu available to scheduler
*/
extern cpumask_t cpu_online_map;
#if NR_CPUS > 1
#define num_online_cpus() cpus_weight(cpu_online_map)
#define cpu_online(cpu) cpu_isset((cpu), cpu_online_map)
#else
#define num_online_cpus() 1
#define cpu_online(cpu) ((cpu) == 0)
#endif
#define for_each_online_cpu(cpu) for_each_cpu_mask((cpu), cpu_online_map)
#endif /* __LINUX_CPUMASK_H */
07070100000012000081A40000000000000000000000016569B9D300003C7B000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/cputree.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/*
* This file contains the code to construct and manipulate a hierarchy of processors,
* cache domains and processor cores.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <inttypes.h>
#include <glib.h>
#include "irqbalance.h"
#include "thermal.h"
#ifdef HAVE_IRQBALANCEUI
extern char *banned_cpumask_from_ui;
#endif
extern char *cpu_ban_string;
GList *cpus;
GList *cache_domains;
GList *packages;
int cache_domain_count;
/* Users want to be able to keep interrupts away from some cpus; store these in a cpumask_t */
cpumask_t banned_cpus;
cpumask_t cpu_online_map;
/*
it's convenient to have the complement of banned_cpus available so that
the AND operator can be used to mask out unwanted cpus
*/
cpumask_t unbanned_cpus;
int process_one_line(char *path, void (*cb)(char *line, void *data), void *data)
{
FILE *file;
char *line = NULL;
size_t size = 0;
int ret = -1;
file = fopen(path, "r");
if (!file)
return ret;
if (getline(&line, &size, file) > 0) {
cb(line, data);
ret = 0;
}
free(line);
fclose(file);
return ret;
}
void get_hex(char *line, void *data)
{
*(int *)data = strtoul(line, NULL, 16);
}
void get_int(char *line, void *data)
{
*(int *)data = strtoul(line, NULL, 10);
}
void get_mask_from_bitmap(char *line, void *mask)
{
cpumask_parse_user(line, strlen(line), *(cpumask_t *)mask);
}
static void get_mask_from_cpulist(char *line, void *mask)
{
if (strlen(line) && line[0] != '\n')
cpulist_parse(line, strlen(line), *(cpumask_t *)mask);
}
/*
* By default do not place IRQs on CPUs the kernel keeps isolated or
* nohz_full, as specified through the boot commandline. Users can
* override this with the IRQBALANCE_BANNED_CPULIST environment variable.
*/
static void setup_banned_cpus(void)
{
char *path = NULL;
char buffer[4096];
cpumask_t nohz_full;
cpumask_t isolated_cpus;
char *env = NULL;
#ifdef HAVE_IRQBALANCEUI
/* A manually specified cpumask overrides auto-detection. */
if (cpu_ban_string != NULL && banned_cpumask_from_ui != NULL) {
cpulist_parse(banned_cpumask_from_ui,
strlen(banned_cpumask_from_ui), banned_cpus);
goto out;
}
#endif
/*
* Notes:
* The IRQBALANCE_BANNED_CPUS will be discarded, please use
* IRQBALANCE_BANNED_CPULIST instead.
*
* Before deleting this environment variable, Introduce a
* deprecation period first for the consider of compatibility.
*/
env = getenv("IRQBALANCE_BANNED_CPUS");
if (env && strlen(env)) {
cpumask_parse_user(env, strlen(env), banned_cpus);
log(TO_ALL, LOG_WARNING,
"IRQBALANCE_BANNED_CPUS is discarded, Use IRQBALANCE_BANNED_CPULIST instead\n");
goto out;
}
env = getenv("IRQBALANCE_BANNED_CPULIST");
if (env && strlen(env)) {
cpulist_parse(env, strlen(env), banned_cpus);
goto out;
}
cpus_clear(isolated_cpus);
cpus_clear(nohz_full);
path = "/sys/devices/system/cpu/isolated";
process_one_line(path, get_mask_from_cpulist, &isolated_cpus);
path = "/sys/devices/system/cpu/nohz_full";
process_one_line(path, get_mask_from_cpulist, &nohz_full);
cpus_or(banned_cpus, nohz_full, isolated_cpus);
cpumask_scnprintf(buffer, 4096, isolated_cpus);
log(TO_CONSOLE, LOG_INFO, "Prevent irq assignment to these isolated CPUs: %s\n", buffer);
cpumask_scnprintf(buffer, 4096, nohz_full);
log(TO_CONSOLE, LOG_INFO, "Prevent irq assignment to these adaptive-ticks CPUs: %s\n", buffer);
out:
#ifdef HAVE_THERMAL
cpus_or(banned_cpus, banned_cpus, thermal_banned_cpus);
cpumask_scnprintf(buffer, 4096, thermal_banned_cpus);
log(TO_CONSOLE, LOG_INFO, "Prevent irq assignment to these thermal-banned CPUs: %s\n", buffer);
#endif
cpumask_scnprintf(buffer, 4096, banned_cpus);
log(TO_CONSOLE, LOG_INFO, "Banned CPUs: %s\n", buffer);
}
static void add_numa_node_to_topo_obj(struct topo_obj *obj, int nodeid)
{
GList *entry;
struct topo_obj *node;
node = get_numa_node(nodeid);
if (!node || (numa_avail && (node->number == NUMA_NO_NODE)))
return;
entry = g_list_find(obj->numa_nodes, node);
if (!entry)
obj->numa_nodes = g_list_append(obj->numa_nodes, node);
if (!numa_avail && obj->obj_type == OBJ_TYPE_PACKAGE) {
entry = g_list_find(node->children, obj);
if (!entry) {
node->children = g_list_append(node->children, obj);
obj->parent = node;
}
}
}
static struct topo_obj* add_cache_domain_to_package(struct topo_obj *cache,
int packageid,
cpumask_t package_mask,
int nodeid)
{
GList *entry;
struct topo_obj *package;
entry = g_list_first(packages);
while (entry) {
package = entry->data;
if (cpus_equal(package_mask, package->mask)) {
if (packageid != package->number)
log(TO_ALL, LOG_WARNING, "package_mask with different physical_package_id found!\n");
break;
}
entry = g_list_next(entry);
}
if (!entry) {
package = calloc(1, sizeof(struct topo_obj));
if (!package) {
need_rebuild = 1;
return NULL;
}
package->mask = package_mask;
package->obj_type = OBJ_TYPE_PACKAGE;
package->obj_type_list = &packages;
package->number = packageid;
packages = g_list_append(packages, package);
}
entry = g_list_find(package->children, cache);
if (!entry) {
package->children = g_list_append(package->children, cache);
cache->parent = package;
}
if (!numa_avail || (nodeid > NUMA_NO_NODE))
add_numa_node_to_topo_obj(package, nodeid);
return package;
}
static struct topo_obj* add_cpu_to_cache_domain(struct topo_obj *cpu,
cpumask_t cache_mask,
int nodeid)
{
GList *entry;
struct topo_obj *cache;
entry = g_list_first(cache_domains);
while (entry) {
cache = entry->data;
if (cpus_equal(cache_mask, cache->mask))
break;
entry = g_list_next(entry);
}
if (!entry) {
cache = calloc(1, sizeof(struct topo_obj));
if (!cache) {
need_rebuild = 1;
return NULL;
}
cache->obj_type = OBJ_TYPE_CACHE;
cache->mask = cache_mask;
cache->number = cache_domain_count;
cache->obj_type_list = &cache_domains;
cache_domains = g_list_append(cache_domains, cache);
cache_domain_count++;
}
entry = g_list_find(cache->children, cpu);
if (!entry) {
cache->children = g_list_append(cache->children, cpu);
cpu->parent = (struct topo_obj *)cache;
}
if (!numa_avail || (nodeid > NUMA_NO_NODE))
add_numa_node_to_topo_obj(cache, nodeid);
return cache;
}
#define ADJ_SIZE(r,s) PATH_MAX-strlen(r)-strlen(#s)
static void do_one_cpu(char *path)
{
struct topo_obj *cpu;
char new_path[PATH_MAX];
char *online_path ="/sys/devices/system/cpu/online";
cpumask_t cache_mask, package_mask;
struct topo_obj *cache;
DIR *dir;
struct dirent *entry;
int nodeid;
int packageid = 0;
unsigned int max_cache_index, cache_index, cache_stat;
cpumask_t online_cpus;
char *cpunrptr = NULL;
int cpunr = -1;
/* skip offline cpus */
cpus_clear(online_cpus);
process_one_line(online_path, get_mask_from_cpulist, &online_cpus);
/* Get the current cpu number from the path */
cpunrptr = rindex(path, '/');
cpunrptr += 4;
cpunr = atoi(cpunrptr);
if (!cpu_isset(cpunr, online_cpus))
return;
cpu = calloc(1, sizeof(struct topo_obj));
if (!cpu) {
need_rebuild = 1;
return;
}
cpu->obj_type = OBJ_TYPE_CPU;
cpu->number = cpunr;
cpu_set(cpu->number, cpu_online_map);
cpu_set(cpu->number, cpu->mask);
/*
* Default the cache_domain mask to be equal to the cpu
*/
cpus_clear(cache_mask);
cpu_set(cpu->number, cache_mask);
/* if the cpu is on the banned list, just don't add it */
if (cpus_intersects(cpu->mask, banned_cpus)) {
free(cpu);
return;
}
/* try to read the package mask; if it doesn't exist assume solitary */
snprintf(new_path, ADJ_SIZE(path, "/topology/core_siblings"),
"%s/topology/core_siblings", path);
if (process_one_line(new_path, get_mask_from_bitmap, &package_mask)) {
cpus_clear(package_mask);
cpu_set(cpu->number, package_mask);
}
/* try to read the package id */
snprintf(new_path, ADJ_SIZE(path, "/topology/physical_package_id"),
"%s/topology/physical_package_id", path);
process_one_line(new_path, get_int, &packageid);
/* try to read the cache mask; if it doesn't exist assume solitary */
/* We want the deepest cache level available */
max_cache_index = 0;
cache_index = 1;
do {
struct stat sb;
/* Extra 10 subtraction is for the max character length of %d */
snprintf(new_path, ADJ_SIZE(path, "/cache/index%d/shared_cpu_map") - 10,
"%s/cache/index%d/shared_cpu_map", path, cache_index);
cache_stat = stat(new_path, &sb);
if (!cache_stat) {
max_cache_index = cache_index;
if (max_cache_index == deepest_cache)
break;
cache_index ++;
}
} while(!cache_stat);
if (max_cache_index > 0) {
/* Extra 10 subtraction is for the max character length of %d */
snprintf(new_path, ADJ_SIZE(path, "/cache/index%d/shared_cpu_map") - 10,
"%s/cache/index%d/shared_cpu_map", path, max_cache_index);
process_one_line(new_path, get_mask_from_bitmap, &cache_mask);
}
nodeid = NUMA_NO_NODE;
if (numa_avail) {
struct topo_obj *node;
dir = opendir(path);
while (dir) {
entry = readdir(dir);
if (!entry)
break;
if (strncmp(entry->d_name, "node", 4) == 0) {
char *end;
int num;
num = strtol(entry->d_name + 4, &end, 10);
if (!*end && num >= 0) {
nodeid = num;
break;
}
}
}
if (dir)
closedir(dir);
/*
* In case of multiple NUMA nodes within a CPU package,
* we override package_mask with node mask.
*/
node = get_numa_node(nodeid);
if (node && (cpus_weight(package_mask) > cpus_weight(node->mask)))
cpus_and(package_mask, package_mask, node->mask);
}
/*
blank out the banned cpus from the various masks so that interrupts
will never be told to go there
*/
cpus_and(cache_mask, cache_mask, unbanned_cpus);
cpus_and(package_mask, package_mask, unbanned_cpus);
cache = add_cpu_to_cache_domain(cpu, cache_mask, nodeid);
if (cache)
add_cache_domain_to_package(cache, packageid, package_mask, nodeid);
cpu->obj_type_list = &cpus;
cpus = g_list_append(cpus, cpu);
}
static void dump_irq(struct irq_info *info, void *data)
{
int spaces = (long int)data;
int i;
char * indent = malloc (sizeof(char) * (spaces + 1));
if (!indent)
return;
for ( i = 0; i < spaces; i++ )
indent[i] = log_indent[0];
indent[i] = '\0';
log(TO_CONSOLE, LOG_INFO, "%sInterrupt %i node_num is %d (%s/%" PRIu64 ":%" PRIu64 ") \n", indent,
info->irq, irq_numa_node(info)->number, classes[info->class], info->load, (info->irq_count - info->last_irq_count));
free(indent);
}
static void dump_numa_node_num(struct topo_obj *p, void *data __attribute__((unused)))
{
log(TO_CONSOLE, LOG_INFO, "%d ", p->number);
}
static void dump_balance_obj(struct topo_obj *d, void *data __attribute__((unused)))
{
struct topo_obj *c = (struct topo_obj *)d;
log(TO_CONSOLE, LOG_INFO, "%s%s%s%sCPU number %i numa_node is ",
log_indent, log_indent, log_indent, log_indent, c->number);
for_each_object(cpu_numa_node(c), dump_numa_node_num, NULL);
log(TO_CONSOLE, LOG_INFO, "(load %lu)\n", (unsigned long)c->load);
if (c->interrupts)
for_each_irq(c->interrupts, dump_irq, (void *)18);
}
static void dump_cache_domain(struct topo_obj *d, void *data)
{
char *buffer = data;
cpumask_scnprintf(buffer, 4095, d->mask);
log(TO_CONSOLE, LOG_INFO, "%s%sCache domain %i: numa_node is ",
log_indent, log_indent, d->number);
for_each_object(d->numa_nodes, dump_numa_node_num, NULL);
log(TO_CONSOLE, LOG_INFO, "cpu mask is %s (load %lu) \n", buffer,
(unsigned long)d->load);
if (d->children)
for_each_object(d->children, dump_balance_obj, NULL);
if (g_list_length(d->interrupts) > 0)
for_each_irq(d->interrupts, dump_irq, (void *)10);
}
static void dump_package(struct topo_obj *d, void *data)
{
char *buffer = data;
cpumask_scnprintf(buffer, 4096, d->mask);
log(TO_CONSOLE, LOG_INFO, "Package %i: numa_node ", d->number);
for_each_object(d->numa_nodes, dump_numa_node_num, NULL);
log(TO_CONSOLE, LOG_INFO, "cpu mask is %s (load %lu)\n",
buffer, (unsigned long)d->load);
if (d->children)
for_each_object(d->children, dump_cache_domain, buffer);
if (g_list_length(d->interrupts) > 0)
for_each_irq(d->interrupts, dump_irq, (void *)2);
}
void dump_tree(void)
{
char buffer[4096];
for_each_object(packages, dump_package, buffer);
}
static void clear_irq_stats(struct irq_info *info, void *data __attribute__((unused)))
{
info->load = 0;
}
static void clear_obj_stats(struct topo_obj *d, void *data __attribute__((unused)))
{
for_each_object(d->children, clear_obj_stats, NULL);
for_each_irq(d->interrupts, clear_irq_stats, NULL);
}
/*
* this function removes previous state from the cpu tree, such as
* which level does how much work and the actual lists of interrupts
* assigned to each component
*/
void clear_work_stats(void)
{
for_each_object(numa_nodes, clear_obj_stats, NULL);
}
void parse_cpu_tree(void)
{
DIR *dir;
struct dirent *entry;
setup_banned_cpus();
cpus_complement(unbanned_cpus, banned_cpus);
dir = opendir("/sys/devices/system/cpu");
if (!dir)
return;
do {
int num;
char pad;
entry = readdir(dir);
/*
* We only want to count real cpus, not cpufreq and
* cpuidle
*/
if (entry &&
sscanf(entry->d_name, "cpu%d%c", &num, &pad) == 1 &&
!strchr(entry->d_name, ' ')) {
char new_path[PATH_MAX];
snprintf(new_path, PATH_MAX, "/sys/devices/system/cpu/%s", entry->d_name);
do_one_cpu(new_path);
}
} while (entry);
closedir(dir);
for_each_object(packages, connect_cpu_mem_topo, NULL);
if (debug_mode)
dump_tree();
}
void free_cpu_topo(gpointer data)
{
struct topo_obj *obj = data;
g_list_free(obj->children);
g_list_free(obj->interrupts);
g_list_free(obj->numa_nodes);
free(obj);
}
/*
* This function frees all memory related to a cpu tree so that a new tree
* can be read
*/
void clear_cpu_tree(void)
{
g_list_free_full(packages, free_cpu_topo);
packages = NULL;
g_list_free_full(cache_domains, free_cpu_topo);
cache_domains = NULL;
cache_domain_count = 0;
g_list_free_full(cpus, free_cpu_topo);
cpus = NULL;
cpus_clear(cpu_online_map);
}
static gint compare_cpus(gconstpointer a, gconstpointer b)
{
const struct topo_obj *ai = a;
const struct topo_obj *bi = b;
return ai->number - bi->number;
}
struct topo_obj *find_cpu_core(int cpunr)
{
GList *entry;
struct topo_obj find;
find.number = cpunr;
entry = g_list_find_custom(cpus, &find, compare_cpus);
return entry ? entry->data : NULL;
}
int get_cpu_count(void)
{
return g_list_length(cpus);
}
07070100000013000081A40000000000000000000000016569B9D30000030C000000000000000000000000000000000000003000000000irqbalance-1.9.3.10.git+1a7d461/irqbalance-ui.1.de Sh \" Subsection
.br
.if t .Sp
.ne 5
.PP
\fB\\$1\fR
.PP
..
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Ip \" List item
.br
.ie \\n(.$>=3 .ne \\$3
.el .ne 3
.IP "\\$1" \\$2
..
.TH "IRQBALANCE-UI" 1 "Jul 2019" "Linux" "irqbalance-ui"
.SH NAME
irqbalance-ui \- user interface for irqbalance
.SH "SYNOPSIS"
.nf
\fBirqbalance-ui\fR
.fi
.SH "DESCRIPTION"
.PP
\fBirqbalance-ui\fR provides an ncurses-based textual user interface to
\fBirqbalance\fR, a daemon responsible for IRQ distribution on Linux systems.
It shows how IRQs are distributed over CPUs at given moment, and allows one to
setup of the sleep interval and the IRQ and CPU banning at runtime.
.SH "HOMEPAGE"
https://github.com/Irqbalance/irqbalance
.SH "SEE ALSO"
irqbalance(1)
07070100000014000081A40000000000000000000000016569B9D3000022F8000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/irqbalance.1.de Sh \" Subsection
.br
.if t .Sp
.ne 5
.PP
\fB\\$1\fR
.PP
..
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Ip \" List item
.br
.ie \\n(.$>=3 .ne \\$3
.el .ne 3
.IP "\\$1" \\$2
..
.TH "IRQBALANCE" 1 "Dec 2006" "Linux" "irqbalance"
.SH NAME
irqbalance \- distribute hardware interrupts across processors on a multiprocessor system
.SH "SYNOPSIS"
.nf
\fBirqbalance\fR
.fi
.SH "DESCRIPTION"
.PP
The purpose of \fBirqbalance\fR is to distribute hardware interrupts across
processors on a multiprocessor system in order to increase performance\&.
.SH "OPTIONS"
.TP
.B -o, --oneshot
Causes irqbalance to be run once, after which the daemon exits.
.TP
.B -d, --debug
Causes irqbalance to print extra debug information. Implies --foreground.
.TP
.B -f, --foreground
Causes irqbalance to run in the foreground (without --debug).
.TP
.B -j, --journal
Enables log output optimized for systemd-journal.
.TP
.B -p, --powerthresh=<threshold>
Set the threshold at which we attempt to move a CPU into powersave mode
If more than <threshold> CPUs are more than 1 standard deviation below the
average CPU softirq workload, and no CPUs are more than 1 standard deviation
above (and have more than 1 IRQ assigned to them), attempt to place 1 CPU in
powersave mode. In powersave mode, a CPU will not have any IRQs balanced to it,
in an effort to prevent that CPU from waking up without need.
.TP
.B -i, --banirq=<irqnum>
Add the specified IRQ to the set of banned IRQs. irqbalance will not affect
the affinity of any IRQs on the banned list, allowing them to be specified
manually. This option is additive and can be specified multiple times. For
example to ban IRQs 43 and 44 from balancing, use the following command line:
.B irqbalance --banirq=43 --banirq=44
.TP
.B -m, --banmod=<module_name>
Add the specified module to the set of banned modules, similar to --banirq.
irqbalance will not affect the affinity of any IRQs of given modules, allowing
them to be specified manually. This option is additive and can be specified
multiple times. For example to ban all IRQs of module foo and module bar from
balancing, use the following command line:
.B irqbalance --banmod=foo --banmod=bar
.TP
.B -c, --deepestcache=<integer>
This allows a user to specify the cache level at which irqbalance partitions
cache domains. Specifying a deeper cache may allow a greater degree of
flexibility for irqbalance to assign IRQ affinity to achieve greater performance
increases, but setting a cache depth too large on some systems (specifically
where all CPUs on a system share the deepest cache level), will cause irqbalance
to see balancing as unnecessary.
.B irqbalance --deepestcache=2
.P
The default value for deepestcache is 2.
.TP
.B -l, --policyscript=<script>
When specified, the referenced script or directory will execute once for each discovered IRQ,
with the sysfs device path and IRQ number passed as arguments. Note that the
device path argument will point to the parent directory from which the IRQ
attributes directory may be directly opened.
Policy scripts specified need to be owned and executable by the user of irqbalance process,
if a directory is specified, non-executable files will be skipped.
The script may specify zero or more key=value pairs that will guide irqbalance in
the management of that IRQ. Key=value pairs are printed by the script on stdout
and will be captured and interpreted by irqbalance. Irqbalance expects a zero
exit code from the provided utility. Recognized key=value pairs are:
.TP
.I ban=[true | false]
Directs irqbalance to exclude the passed in IRQ from balancing.
.TP
.I balance_level=[none | package | cache | core]
This allows a user to override the balance level of a given IRQ. By default the
balance level is determined automatically based on the pci device class of the
device that owns the IRQ.
.TP
.I numa_node=<integer>
This allows a user to override the NUMA node that sysfs indicates a given device
IRQ is local to. Often, systems will not specify this information in ACPI, and as a
result devices are considered equidistant from all NUMA nodes in a system.
This option allows for that hardware provided information to be overridden, so
that irqbalance can bias IRQ affinity for these devices toward its most local
node. Note that specifying a -1 here forces irqbalance to consider an interrupt
from a device to be equidistant from all nodes.
.TP
Note that, if a directory is specified rather than a regular file, all files in
the directory will be considered policy scripts, and executed on adding of an
irq to a database. If such a directory is specified, scripts in the directory
must additionally exit with one of the following exit codes:
.TP
.I 0
This indicates the script has a policy for the referenced irq, and that further
script processing should stop
.TP
.I 1
This indicates that the script has no policy for the referenced irq, and that
script processing should continue
.TP
.I 2
This indicates that an error has occurred in the script, and it should be skipped
(further processing to continue)
.TP
.B --migrateval, -e <val>
Specify a minimum migration ratio to trigger a rebalancing
Normally any improvement in load distribution will trigger the migration of an
irq, as long as preforming the migration will not simply move the load to a new
cpu. By specifying a migration value, the load balance improvement is subject
to hysteresis defined by this value, which is inversely propotional to the
value. For example, a value of 2 in this option tells irqbalance that the
improvement in load distribution must be at least 50%, a value of 4 indicates
the load distribution improvement must be at least 25%, etc
.TP
.B -s, --pid=<file>
Have irqbalance write its process id to the specified file. By default no
pidfile is written. The written pidfile is automatically unlinked when
irqbalance exits. It is ignored when used with --debug or --foreground.
.TP
.B -t, --interval=<time>
Set the measurement time for irqbalance. irqbalance will sleep for <time>
seconds between samples of the irq load on the system cpus. Defaults to 10.
.SH "ENVIRONMENT VARIABLES"
.TP
.B IRQBALANCE_ONESHOT
Same as --oneshot.
.TP
.B IRQBALANCE_DEBUG
Same as --debug.
.TP
.B IRQBALANCE_BANNED_CPUS
Provides a mask of CPUs which irqbalance should ignore and never assign interrupts to.
If not specified, irqbalance use mask of isolated and adaptive-ticks CPUs on the
system as the default value. The "isolcpus=" boot parameter specifies the isolated CPUs. The "nohz_full=" boot parameter specifies the adaptive-ticks CPUs. By default, no CPU will be an isolated or adaptive-ticks CPU.
This is a hexmask without the leading ’0x’. On systems with large numbers of
processors, each group of eight hex digits is separated by a comma ’,’. i.e.
‘export IRQBALANCE_BANNED_CPUS=fc0‘ would prevent irqbalance from assigning irqs
to the 7th-12th cpus (cpu6-cpu11) or ‘export IRQBALANCE_BANNED_CPUS=ff000000,00000001‘
would prevent irqbalance from assigning irqs to the 1st (cpu0) and 57th-64th cpus
(cpu56-cpu63).
Notes: This environment variable will be discarded, please use IRQBALANCE_BANNED_CPULIST
instead. Before deleting this environment variable, Introduce a deprecation period first
for the consider of compatibility.
.TP
.B IRQBALANCE_BANNED_CPULIST
Provides a cpulist which irqbalance should ignore and never assign interrupts to.
If not specified, irqbalance use mask of isolated and adaptive-ticks CPUs on the
system as the default value.
.SH "SIGNALS"
.TP
.B SIGHUP
Forces a rescan of the available IRQs and system topology.
.SH "API"
irqbalance is able to communicate via socket and return it's current assignment
tree and setup, as well as set new settings based on sent values. Socket is abstract,
with a name in form of
.B irqbalance<PID>.sock
, where <PID> is the process ID of irqbalance instance to communicate with.
Possible values to send:
.TP
.B stats
Retrieve assignment tree of IRQs to CPUs, in recursive manner. For each CPU node
in tree, it's type, number, load and whether the save mode is active are sent. For
each assigned IRQ type, it's number, load, number of IRQs since last rebalancing
and it's class are sent. Refer to types.h file for explanation of defines.
.TP
.B setup
Get the current value of sleep interval, mask of banned CPUs and list of banned IRQs.
.TP
.B settings sleep <s>
Set new value of sleep interval, <s> >= 1.
.TP
.B settings cpus <cpu_number1> <cpu_number2> ...
Ban listed CPUs from IRQ handling, all old values of banned CPUs are forgotten.
.TP
.B settings ban irqs <irq1> <irq2> ...
Ban listed IRQs from being balanced, all old values of banned IRQs are forgotten.
.PP
irqbalance checks SCM_CREDENTIALS of sender (only root user is allowed to interact).
Based on chosen tools, ancillary message with credentials needs to be sent with request.
.SH "HOMEPAGE"
https://github.com/Irqbalance/irqbalance
07070100000015000081A40000000000000000000000016569B9D300004A30000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/irqbalance.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <sys/time.h>
#include <syslog.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <inttypes.h>
#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#endif
#ifdef HAVE_LIBCAP_NG
#include <cap-ng.h>
#endif
#ifdef HAVE_IRQBALANCEUI
#include <sys/un.h>
#include <sys/socket.h>
#endif
#include "irqbalance.h"
#include "thermal.h"
volatile int keep_going = 1;
int one_shot_mode;
int debug_mode;
int foreground_mode;
int numa_avail;
int journal_logging = 0;
int need_rescan;
int need_rebuild;
unsigned int log_mask = TO_ALL;
const char *log_indent;
unsigned long power_thresh = ULONG_MAX;
unsigned long deepest_cache = 2;
unsigned long long cycle_count = 0;
char *pidfile = NULL;
char *polscript = NULL;
long HZ;
int sleep_interval = SLEEP_INTERVAL;
int last_interval;
GMainLoop *main_loop;
char *cpu_ban_string = NULL;
unsigned long migrate_ratio = 0;
#ifdef HAVE_IRQBALANCEUI
int socket_fd;
char socket_name[64];
char *banned_cpumask_from_ui = NULL;
#endif
static void sleep_approx(int seconds)
{
struct timespec ts;
struct timeval tv;
gettimeofday(&tv, NULL);
ts.tv_sec = seconds;
ts.tv_nsec = -tv.tv_usec*1000;
while (ts.tv_nsec < 0) {
ts.tv_sec--;
ts.tv_nsec += 1000000000;
}
nanosleep(&ts, NULL);
}
#ifdef HAVE_GETOPT_LONG
struct option lopts[] = {
{"oneshot", 0, NULL, 'o'},
{"debug", 0, NULL, 'd'},
{"foreground", 0, NULL, 'f'},
{"powerthresh", 1, NULL, 'p'},
{"banirq", 1 , NULL, 'i'},
{"deepestcache", 1, NULL, 'c'},
{"policyscript", 1, NULL, 'l'},
{"pid", 1, NULL, 's'},
{"journal", 0, NULL, 'j'},
{"banmod", 1 , NULL, 'm'},
{"interval", 1 , NULL, 't'},
{"version", 0, NULL, 'V'},
{"migrateval", 1, NULL, 'e'},
{0, 0, 0, 0}
};
static void usage(void)
{
log(TO_CONSOLE, LOG_INFO, "irqbalance [--oneshot | -o] [--debug | -d] [--foreground | -f] [--journal | -j]\n");
log(TO_CONSOLE, LOG_INFO, " [--powerthresh= | -p <off> | <n>] [--banirq= | -i <n>] [--banmod= | -m <module>] [--policyscript= | -l <script>]\n");
log(TO_CONSOLE, LOG_INFO, " [--pid= | -s <file>] [--deepestcache= | -c <n>] [--interval= | -t <n>] [--migrateval= | -e <n>]\n");
}
static void version(void)
{
log(TO_CONSOLE, LOG_INFO, "irqbalance version " VERSION "\n");
}
static void parse_command_line(int argc, char **argv)
{
int opt;
int longind;
unsigned long val;
char *endptr;
while ((opt = getopt_long(argc, argv,
"odfjVi:p:s:c:l:m:t:e:",
lopts, &longind)) != -1) {
switch(opt) {
case '?':
usage();
exit(1);
break;
case 'V':
version();
exit(1);
break;
case 'c':
deepest_cache = strtoul(optarg, &endptr, 10);
if (optarg == endptr || deepest_cache == ULONG_MAX || deepest_cache < 1) {
usage();
exit(1);
}
break;
case 'd':
debug_mode=1;
foreground_mode=1;
break;
case 'f':
foreground_mode=1;
break;
case 'i':
val = strtoull(optarg, &endptr, 10);
if (optarg == endptr || val == ULONG_MAX) {
usage();
exit(1);
}
add_cl_banned_irq((int)val);
break;
case 'l':
free(polscript);
polscript = strdup(optarg);
break;
case 'm':
add_cl_banned_module(optarg);
break;
case 'p':
if (!strncmp(optarg, "off", strlen(optarg)))
power_thresh = ULONG_MAX;
else {
power_thresh = strtoull(optarg, &endptr, 10);
if (optarg == endptr || power_thresh == ULONG_MAX) {
usage();
exit(1);
}
}
break;
case 'o':
one_shot_mode=1;
break;
case 's':
pidfile = optarg;
break;
case 'j':
journal_logging=1;
foreground_mode=1;
break;
case 't':
sleep_interval = strtol(optarg, &endptr, 10);
if (optarg == endptr || sleep_interval < 1) {
usage();
exit(1);
}
break;
case 'e':
migrate_ratio = strtoul(optarg, &endptr, 10);
if (optarg == endptr) {
usage();
exit(1);
}
break;
}
}
}
#else /* ! HAVE_GETOPT_LONG */
static void parse_command_line(int argc, char **argv)
{
if (argc>1 && strstr(argv[1],"--debug")) {
debug_mode=1;
foreground_mode=1;
}
if (argc>1 && strstr(argv[1],"--foreground"))
foreground_mode=1;
if (argc>1 && strstr(argv[1],"--oneshot"))
one_shot_mode=1;
if (argc>1 && strstr(argv[1],"--journal")) {
journal_logging=1;
foreground_mode=1;
}
}
#endif /* HAVE_GETOPT_LONG */
/*
* This builds our object tree. The Hierarchy is typically pretty
* straightforward.
* At the top are numa_nodes
* CPU packages belong to a single numa_node, unless the cache domains are in
* separate nodes. In that case, the cache domain's parent is the package, but
* the numa nodes point to the cache domains instead of the package as their
* children. This allows us to maintain the CPU hierarchy while adjusting for
* alternate memory topologies that are present on recent processor.
* All Cache domains belong to a CPU package
* All CPU cores belong to a cache domain
*
* Objects are built in that order (top down)
*
* Object workload is the aggregate sum of the
* workload of the objects below it
*/
static void build_object_tree(void)
{
build_numa_node_list();
parse_cpu_tree();
rebuild_irq_db();
}
static void free_object_tree(void)
{
free_numa_node_list();
clear_cpu_tree();
free_irq_db();
}
static void dump_object_tree(void)
{
for_each_object(numa_nodes, dump_numa_node_info, NULL);
}
void force_rebalance_irq(struct irq_info *info, void *data __attribute__((unused)))
{
if (info->level == BALANCE_NONE)
return;
if (info->assigned_obj == NULL)
rebalance_irq_list = g_list_append(rebalance_irq_list, info);
else
migrate_irq(&info->assigned_obj->interrupts, &rebalance_irq_list, info);
info->assigned_obj = NULL;
}
gboolean handler(gpointer data __attribute__((unused)))
{
keep_going = 0;
g_main_loop_quit(main_loop);
return TRUE;
}
gboolean force_rescan(gpointer data __attribute__((unused)))
{
if (cycle_count)
need_rescan = 1;
return TRUE;
}
gboolean scan(gpointer data __attribute__((unused)))
{
log(TO_CONSOLE, LOG_INFO, "\n\n\n-----------------------------------------------------------------------------\n");
clear_work_stats();
parse_proc_interrupts();
/* cope with cpu hotplug -- detected during /proc/interrupts parsing */
while (keep_going && (need_rescan || need_rebuild)) {
int try_times = 0;
need_rescan = 0;
cycle_count = 0;
log(TO_CONSOLE, LOG_INFO, "Rescanning cpu topology \n");
clear_work_stats();
do {
free_object_tree();
if (++try_times > 3) {
log(TO_CONSOLE, LOG_WARNING, "Rescanning cpu topology: fail\n");
goto out;
}
need_rebuild = 0;
build_object_tree();
} while (need_rebuild);
for_each_irq(NULL, force_rebalance_irq, NULL);
parse_proc_interrupts();
parse_proc_stat();
sleep_approx(sleep_interval);
clear_work_stats();
parse_proc_interrupts();
}
parse_proc_stat();
if (cycle_count)
update_migration_status();
calculate_placement();
activate_mappings();
out:
if (debug_mode)
dump_tree();
if (one_shot_mode)
keep_going = 0;
cycle_count++;
/* sleep_interval may be changed by socket */
if (last_interval != sleep_interval) {
last_interval = sleep_interval;
g_timeout_add_seconds(sleep_interval, scan, NULL);
return FALSE;
}
if (keep_going) {
return TRUE;
} else {
g_main_loop_quit(main_loop);
return FALSE;
}
}
void get_irq_data(struct irq_info *irq, void *data)
{
char **irqdata = (char **)data;
char *newptr = NULL;
if (!*irqdata)
newptr = calloc(24 + 1 + 11 + 20 + 20 + 11, 1);
else
newptr = realloc(*irqdata, strlen(*irqdata) + 24 + 1 + 11 + 20 + 20 + 11);
if (!newptr)
return;
*irqdata = newptr;
sprintf(*irqdata + strlen(*irqdata),
"IRQ %d LOAD %" PRIu64 " DIFF %" PRIu64 " CLASS %d ", irq->irq, irq->load,
(irq->irq_count - irq->last_irq_count), irq->class);
}
void get_object_stat(struct topo_obj *object, void *data)
{
char **stats = (char **)data;
char *irq_data = NULL;
char *newptr = NULL;
size_t irqdlen;
if (g_list_length(object->interrupts) > 0) {
for_each_irq(object->interrupts, get_irq_data, &irq_data);
}
irqdlen = irq_data ? strlen(irq_data) : 0;
/*
* Note, the size in both conditional branches below is made up as follows:
* strlen(irq_data) - self explanitory
* 31 - The size of "TYPE NUMBER LOAD SAVE_MODE "
* 11 - The maximal size of a %d printout
* 20 - The maximal size of a %lu printout
* 1 - The trailing string terminator
* This should be adjusted if the string in the sprintf is changed
*/
if (!*stats) {
newptr = calloc(irqdlen + 31 + 11 + 20 + 11 + 1, 1);
} else {
newptr = realloc(*stats, strlen(*stats) + irqdlen + 31 + 11 + 20 + 11 + 1);
}
if (!newptr) {
free(irq_data);
return;
}
*stats = newptr;
sprintf(*stats + strlen(*stats), "TYPE %d NUMBER %d LOAD %" PRIu64 " SAVE_MODE %d %s",
object->obj_type, object->number, object->load,
object->powersave_mode, irq_data ? irq_data : "");
free(irq_data);
if (object->obj_type != OBJ_TYPE_CPU) {
for_each_object(object->children, get_object_stat, data);
}
}
#ifdef HAVE_IRQBALANCEUI
gboolean sock_handle(gint fd, GIOCondition condition, gpointer user_data __attribute__((unused)))
{
char buff[500];
int sock;
int recv_size = 0;
int valid_user = 0;
struct iovec iov = { buff, 500 };
struct msghdr msg = { 0 };
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = malloc(CMSG_SPACE(sizeof(struct ucred)));
msg.msg_controllen = CMSG_SPACE(sizeof(struct ucred));
struct cmsghdr *cmsg;
if (condition == G_IO_IN) {
sock = accept(fd, NULL, NULL);
if (sock < 0) {
log(TO_ALL, LOG_WARNING, "Connection couldn't be accepted.\n");
goto out;
}
if ((recv_size = recvmsg(sock, &msg, 0)) < 0) {
log(TO_ALL, LOG_WARNING, "Error while receiving data.\n");
goto out_close;
}
cmsg = CMSG_FIRSTHDR(&msg);
if (!cmsg) {
log(TO_ALL, LOG_WARNING, "Connection no memory.\n");
goto out_close;
}
if ((cmsg->cmsg_level == SOL_SOCKET) &&
(cmsg->cmsg_type == SCM_CREDENTIALS)) {
struct ucred *credentials = (struct ucred *) CMSG_DATA(cmsg);
if (!credentials->uid) {
valid_user = 1;
}
}
if (!valid_user) {
log(TO_ALL, LOG_INFO, "Permission denied for user to connect to socket.\n");
goto out_close;
}
if (!strncmp(buff, "stats", strlen("stats"))) {
char *stats = NULL;
for_each_object(numa_nodes, get_object_stat, &stats);
send(sock, stats, strlen(stats), 0);
free(stats);
}
if (!strncmp(buff, "settings ", strlen("settings "))) {
if (!(strncmp(buff + strlen("settings "), "sleep ",
strlen("sleep ")))) {
char *sleep_string = malloc(
sizeof(char) * (recv_size - strlen("settings sleep ") + 1));
if (!sleep_string)
goto out_close;
strncpy(sleep_string, buff + strlen("settings sleep "),
recv_size - strlen("settings sleep "));
sleep_string[recv_size - strlen("settings sleep ")] = '\0';
int new_iterval = strtoul(sleep_string, NULL, 10);
if (new_iterval >= 1) {
sleep_interval = new_iterval;
}
free(sleep_string);
} else if (!(strncmp(buff + strlen("settings "), "ban irqs ",
strlen("ban irqs ")))) {
char *end;
char *irq_string = malloc(
sizeof(char) * (recv_size - strlen("settings ban irqs ") + 1));
if (!irq_string)
goto out_close;
strncpy(irq_string, buff + strlen("settings ban irqs "),
recv_size - strlen("settings ban irqs "));
irq_string[recv_size - strlen("settings ban irqs ")] = '\0';
g_list_free_full(cl_banned_irqs, free);
cl_banned_irqs = NULL;
need_rescan = 1;
if (!strncmp(irq_string, "NONE", strlen("NONE"))) {
free(irq_string);
goto out_close;
}
int irq = strtoul(irq_string, &end, 10);
do {
add_cl_banned_irq(irq);
} while((irq = strtoul(end, &end, 10)));
free(irq_string);
} else if (!(strncmp(buff + strlen("settings "), "cpus ",
strlen("cpus")))) {
banned_cpumask_from_ui = NULL;
free(cpu_ban_string);
cpu_ban_string = NULL;
cpu_ban_string = malloc(
sizeof(char) * (recv_size - strlen("settings cpus ") + 1));
if (!cpu_ban_string)
goto out_close;
strncpy(cpu_ban_string, buff + strlen("settings cpus "),
recv_size - strlen("settings cpus "));
cpu_ban_string[recv_size - strlen("settings cpus ")] = '\0';
banned_cpumask_from_ui = strtok(cpu_ban_string, " ");
if (!strncmp(banned_cpumask_from_ui, "NULL", strlen("NULL"))) {
banned_cpumask_from_ui = NULL;
free(cpu_ban_string);
cpu_ban_string = NULL;
}
need_rescan = 1;
}
}
if (!strncmp(buff, "setup", strlen("setup"))) {
char banned[512];
char *setup = calloc(strlen("SLEEP ") + 11 + 1, 1);
char *newptr = NULL;
if (!setup)
goto out_close;
snprintf(setup, strlen("SLEEP ") + 11 + 1, "SLEEP %d ", sleep_interval);
if(g_list_length(cl_banned_irqs) > 0) {
for_each_irq(cl_banned_irqs, get_irq_data, &setup);
}
cpumask_scnprintf(banned, 512, banned_cpus);
newptr = realloc(setup, strlen(setup) + strlen(banned) + 7 + 1);
if (!newptr)
goto out_free_setup;
setup = newptr;
snprintf(setup + strlen(setup), strlen(banned) + 7 + 1,
"BANNED %s", banned);
send(sock, setup, strlen(setup), 0);
out_free_setup:
free(setup);
}
out_close:
close(sock);
}
out:
free(msg.msg_control);
return TRUE;
}
int init_socket()
{
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
socket_fd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (socket_fd < 0) {
log(TO_ALL, LOG_WARNING, "Socket couldn't be created.\n");
return 1;
}
/*
* First try to create a file-based socket in tmpfs. If that doesn't
* succeed, fall back to an abstract socket (non file-based).
*/
addr.sun_family = AF_UNIX;
snprintf(socket_name, 64, "%s/%s%d.sock", SOCKET_TMPFS, SOCKET_PATH, getpid());
strncpy(addr.sun_path, socket_name, sizeof(addr.sun_path));
if (bind(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
log(TO_ALL, LOG_WARNING, "Daemon couldn't be bound to the file-based socket.\n");
/* Try binding to abstract */
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_UNIX;
if (bind(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
log(TO_ALL, LOG_WARNING, "Daemon couldn't be bound to the abstract socket, bailing out.\n");
return 1;
}
}
int optval = 1;
if (setsockopt(socket_fd, SOL_SOCKET, SO_PASSCRED, &optval, sizeof(optval)) < 0) {
log(TO_ALL, LOG_WARNING, "Unable to set socket options.\n");
return 1;
}
listen(socket_fd, 1);
g_unix_fd_add(socket_fd, G_IO_IN, sock_handle, NULL);
return 0;
}
#endif
int main(int argc, char** argv)
{
sigset_t sigset, old_sigset;
int ret = EXIT_SUCCESS;
sigemptyset(&sigset);
sigaddset(&sigset,SIGINT);
sigaddset(&sigset,SIGHUP);
sigaddset(&sigset,SIGTERM);
sigaddset(&sigset,SIGUSR1);
sigaddset(&sigset,SIGUSR2);
sigprocmask(SIG_BLOCK, &sigset, &old_sigset);
parse_command_line(argc, argv);
/*
* Check if we are run under systemd and enable journal_logging
* and run in foreground if so. Systemd v232 or later will set
* INVOCATION_ID.
*/
if (getenv("INVOCATION_ID")) {
journal_logging=1;
foreground_mode=1;
}
/*
* Open the syslog connection
*/
openlog(argv[0], 0, LOG_DAEMON);
if (getenv("IRQBALANCE_ONESHOT"))
one_shot_mode=1;
if (getenv("IRQBALANCE_DEBUG")) {
debug_mode=1;
foreground_mode=1;
}
/*
* If we are't in debug mode, don't dump anything to the console
* note that everything goes to the console before we check this
*/
if (journal_logging)
log_indent = "....";
else
log_indent = " ";
if (!debug_mode)
log_mask &= ~TO_CONSOLE;
if (numa_available() > -1) {
numa_avail = 1;
} else
log(TO_CONSOLE, LOG_INFO, "This machine seems not NUMA capable.\n");
if (geteuid() != 0)
log(TO_ALL, LOG_WARNING, "Irqbalance hasn't been executed under root privileges, thus it won't in fact balance interrupts.\n");
HZ = sysconf(_SC_CLK_TCK);
if (HZ == -1) {
log(TO_ALL, LOG_WARNING, "Unable to determine HZ defaulting to 100\n");
HZ = 100;
}
if (!foreground_mode) {
int pidfd = -1;
if (daemon(0,0))
exit(EXIT_FAILURE);
/* Write pidfile which can be used to avoid starting multiple instances */
if (pidfile && (pidfd = open(pidfile,
O_WRONLY | O_CREAT | O_EXCL | O_TRUNC,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) >= 0) {
char str[16];
snprintf(str, sizeof(str), "%u\n", getpid());
write(pidfd, str, strlen(str));
close(pidfd);
}
}
build_object_tree();
if (debug_mode)
dump_object_tree();
/* On single core UP systems irqbalance obviously has no work to do */
if (num_online_cpus() <= 1) {
char *msg = "Balancing is ineffective on systems with a "
"single cpu. Shutting down\n";
log(TO_ALL, LOG_WARNING, "%s", msg);
goto out;
}
g_unix_signal_add(SIGINT, handler, NULL);
g_unix_signal_add(SIGTERM, handler, NULL);
g_unix_signal_add(SIGUSR1, handler, NULL);
g_unix_signal_add(SIGUSR2, handler, NULL);
g_unix_signal_add(SIGHUP, force_rescan, NULL);
sigprocmask(SIG_SETMASK, &old_sigset, NULL);
#ifdef HAVE_LIBCAP_NG
// Drop capabilities
capng_clear(CAPNG_SELECT_BOTH);
capng_lock();
capng_apply(CAPNG_SELECT_BOTH);
#endif
for_each_irq(NULL, force_rebalance_irq, NULL);
parse_proc_interrupts();
parse_proc_stat();
#ifdef HAVE_IRQBALANCEUI
if (init_socket()) {
ret = EXIT_FAILURE;
goto out;
}
#endif
if (init_thermal())
log(TO_ALL, LOG_WARNING, "Failed to initialize thermal events.\n");
main_loop = g_main_loop_new(NULL, FALSE);
last_interval = sleep_interval;
g_timeout_add_seconds(sleep_interval, scan, NULL);
g_main_loop_run(main_loop);
g_main_loop_quit(main_loop);
out:
deinit_thermal();
free_object_tree();
free_cl_opts();
free(polscript);
/* Remove pidfile */
if (!foreground_mode && pidfile)
unlink(pidfile);
#ifdef HAVE_IRQBALANCEUI
/* Remove socket */
if (socket_fd > 0)
close(socket_fd);
if (socket_name[0])
unlink(socket_name);
#endif
return ret;
}
07070100000016000081A40000000000000000000000016569B9D300001227000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/irqbalance.h#ifndef __INCLUDE_GUARD_IRQBALANCE_H_
#define __INCLUDE_GUARD_IRQBALANCE_H_
#include "constants.h"
#include "cpumask.h"
#include <stdint.h>
#include <glib.h>
#include <glib-unix.h>
#include <syslog.h>
#include <limits.h>
#include "types.h"
#include "config.h"
#ifdef __aarch64__
#define AARCH64
#endif
#ifdef HAVE_NUMA_H
#include <numa.h>
#else
#define numa_available() -1
#endif
#ifdef HAVE_LIBSYSTEMD
#include <systemd/sd-journal.h>
#endif
#define NUMA_NO_NODE (-1)
extern char *classes[];
extern void parse_cpu_tree(void);
extern void clear_work_stats(void);
extern void parse_proc_interrupts(void);
extern GList* collect_full_irq_list();
extern void parse_proc_stat(void);
extern void set_interrupt_count(int number, uint64_t count);
extern void set_msi_interrupt_numa(int number);
extern void init_irq_class_and_type(char *savedline, struct irq_info *info, int irq);
extern int proc_irq_hotplug(char *line, int irq, struct irq_info **pinfo);
extern void clear_no_existing_irqs(void);
extern GList *rebalance_irq_list;
extern void force_rebalance_irq(struct irq_info *info, void *data __attribute__((unused)));
void update_migration_status(void);
void dump_workloads(void);
void sort_irq_list(GList **list);
void calculate_placement(void);
void dump_tree(void);
void activate_mappings(void);
void clear_cpu_tree(void);
void free_cpu_topo(gpointer data);
/*===================NEW BALANCER FUNCTIONS============================*/
/*
* Master topo_obj type lists
*/
extern GList *numa_nodes;
extern GList *packages;
extern GList *cache_domains;
extern GList *cpus;
extern int numa_avail;
extern GList *cl_banned_irqs;
extern int debug_mode;
extern int journal_logging;
extern int one_shot_mode;
extern int need_rescan;
extern int need_rebuild;
extern unsigned long long cycle_count;
extern unsigned long power_thresh;
extern unsigned long deepest_cache;
extern char *polscript;
extern cpumask_t banned_cpus;
extern cpumask_t unbanned_cpus;
extern long HZ;
extern unsigned long migrate_ratio;
/*
* Numa node access routines
*/
extern void build_numa_node_list(void);
extern void free_numa_node_list(void);
extern void dump_numa_node_info(struct topo_obj *node, void *data);
extern void connect_cpu_mem_topo(struct topo_obj *p, void *data);
extern struct topo_obj *get_numa_node(int nodeid);
/*
* cpu core functions
*/
#define cpu_numa_node(cpu) ((cpu)->parent->numa_nodes)
extern struct topo_obj *find_cpu_core(int cpunr);
extern int get_cpu_count(void);
/*
* irq db functions
*/
extern void rebuild_irq_db(void);
extern void free_irq_db(void);
extern void add_cl_banned_irq(int irq);
extern void for_each_irq(GList *list, void (*cb)(struct irq_info *info, void *data), void *data);
extern struct irq_info *get_irq_info(int irq);
extern void migrate_irq(GList **from, GList **to, struct irq_info *info);
extern void free_cl_opts(void);
extern void add_cl_banned_module(char *modname);
#define irq_numa_node(irq) ((irq)->numa_node)
/*
* Generic object functions
*/
static inline void for_each_object(GList *list, void (*cb)(struct topo_obj *obj, void *data), void *data)
{
GList *entry, *next;
entry = g_list_first(list);
while (entry) {
next = g_list_next(entry);
cb(entry->data, data);
entry = next;
}
}
/*
* Logging functions
*/
#define TO_SYSLOG (1 << 0)
#define TO_CONSOLE (1 << 1)
#define TO_ALL (TO_SYSLOG | TO_CONSOLE)
extern const char * log_indent;
extern unsigned int log_mask;
#ifdef HAVE_LIBSYSTEMD
#define log(mask, lvl, fmt, args...) do { \
if (journal_logging) { \
if (log_mask & mask & TO_SYSLOG) \
sd_journal_print(lvl, fmt, ##args); \
if (log_mask & mask & TO_CONSOLE) \
printf(fmt, ##args); \
} else { \
if (log_mask & mask & TO_SYSLOG) \
syslog(lvl, fmt, ##args); \
if (log_mask & mask & TO_CONSOLE) \
printf(fmt, ##args); \
} \
}while(0)
#else /* ! HAVE_LIBSYSTEMD */
#define log(mask, lvl, fmt, args...) do { \
if (journal_logging) { \
printf("<%d>", lvl); \
printf(fmt, ##args); \
} else { \
if (log_mask & mask & TO_SYSLOG) \
syslog(lvl, fmt, ##args); \
if (log_mask & mask & TO_CONSOLE) \
printf(fmt, ##args); \
} \
}while(0)
#endif /* HAVE_LIBSYSTEMD */
#define SOCKET_PATH "irqbalance"
#define SOCKET_TMPFS "/run/irqbalance"
extern int process_one_line(char *path, void (*cb)(char *line, void *data), void *data);
extern void get_mask_from_bitmap(char *line, void *mask);
extern void get_int(char *line, void *data);
extern void get_hex(char *line, void *data);
#endif /* __INCLUDE_GUARD_IRQBALANCE_H_ */
07070100000017000081A40000000000000000000000016569B9D30000192F000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/irqlist.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/*
* This file has the basic functions to manipulate interrupt metadata
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <math.h>
#include "types.h"
#include "irqbalance.h"
struct load_balance_info {
unsigned long long int total_load;
unsigned long long avg_load;
unsigned long long min_load;
unsigned long long adjustment_load;
int load_sources;
unsigned long long int deviations;
long double std_deviation;
unsigned int num_over;
unsigned int num_under;
unsigned int num_powersave;
struct topo_obj *powersave;
};
static void gather_load_stats(struct topo_obj *obj, void *data)
{
struct load_balance_info *info = data;
if (info->load_sources == 0 || obj->load < info->min_load)
info->min_load = obj->load;
info->total_load += obj->load;
info->load_sources += 1;
}
static void compute_deviations(struct topo_obj *obj, void *data)
{
struct load_balance_info *info = data;
unsigned long long int deviation;
deviation = (obj->load > info->avg_load) ?
obj->load - info->avg_load :
info->avg_load - obj->load;
info->deviations += (deviation * deviation);
}
static void move_candidate_irqs(struct irq_info *info, void *data)
{
struct load_balance_info *lb_info = data;
unsigned long delta_load = 0;
/* Don't rebalance irqs that don't want it */
if (info->level == BALANCE_NONE)
return;
/* Don't move cpus that only have one irq, regardless of load */
if (g_list_length(info->assigned_obj->interrupts) <= 1)
return;
/* IRQs with a load of 1 have most likely not had any interrupts and
* aren't worth migrating
*/
if (info->load <= 1)
return;
if (migrate_ratio > 0) {
delta_load = (lb_info->adjustment_load - lb_info->min_load) / migrate_ratio;
}
/* If we can migrate an irq without swapping the imbalance do it. */
if ((lb_info->min_load + info->load) < delta_load + (lb_info->adjustment_load - info->load)) {
lb_info->adjustment_load -= info->load;
lb_info->min_load += info->load;
if (lb_info->min_load > lb_info->adjustment_load) {
lb_info->min_load = lb_info->adjustment_load;
}
} else
return;
log(TO_CONSOLE, LOG_INFO, "Selecting irq %d for rebalancing\n", info->irq);
migrate_irq(&info->assigned_obj->interrupts, &rebalance_irq_list, info);
info->assigned_obj = NULL;
}
static void migrate_overloaded_irqs(struct topo_obj *obj, void *data)
{
struct load_balance_info *info = data;
if (obj->powersave_mode)
info->num_powersave++;
if ((obj->load + info->std_deviation) <= info->avg_load) {
info->num_under++;
if (power_thresh != ULONG_MAX && !info->powersave)
if (!obj->powersave_mode)
info->powersave = obj;
} else if ((obj->load - info->std_deviation) >=info->avg_load) {
info->num_over++;
}
if ((obj->load > info->min_load) &&
(g_list_length(obj->interrupts) > 1)) {
/* order the list from greatest to least workload */
sort_irq_list(&obj->interrupts);
/*
* Each irq carries a weighted average amount of load
* we think it's responsible for. This object's load is larger
* than the object with the minimum load. Select irqs for
* migration if we could move them to the minimum object
* without reversing the imbalance or until we only have one
* left.
*/
info->adjustment_load = obj->load;
for_each_irq(obj->interrupts, move_candidate_irqs, info);
}
}
static void force_irq_migration(struct irq_info *info, void *data __attribute__((unused)))
{
migrate_irq(&info->assigned_obj->interrupts, &rebalance_irq_list, info);
info->assigned_obj = NULL;
}
static void clear_powersave_mode(struct topo_obj *obj, void *data __attribute__((unused)))
{
obj->powersave_mode = 0;
}
static void find_overloaded_objs(GList *name, struct load_balance_info *info) {
memset(info, 0, sizeof(struct load_balance_info));
for_each_object(name, gather_load_stats, info);
info->load_sources = (info->load_sources == 0) ? 1 : (info->load_sources);
info->avg_load = info->total_load / info->load_sources;
for_each_object(name, compute_deviations, info);
/* Don't divide by zero if there is a single load source */
if (info->load_sources == 1)
info->std_deviation = 0;
else {
info->std_deviation = (long double)(info->deviations / (info->load_sources - 1));
info->std_deviation = sqrt(info->std_deviation);
}
for_each_object(name, migrate_overloaded_irqs, info);
}
void update_migration_status(void)
{
struct load_balance_info info;
find_overloaded_objs(cpus, &info);
if (power_thresh != ULONG_MAX && cycle_count > 5) {
if (!info.num_over && (info.num_under >= power_thresh) && info.powersave) {
log(TO_ALL, LOG_INFO, "cpu %d entering powersave mode\n", info.powersave->number);
info.powersave->powersave_mode = 1;
if (g_list_length(info.powersave->interrupts) > 0)
for_each_irq(info.powersave->interrupts, force_irq_migration, NULL);
} else if ((info.num_over) && (info.num_powersave)) {
log(TO_ALL, LOG_INFO, "Load average increasing, re-enabling all cpus for irq balancing\n");
for_each_object(cpus, clear_powersave_mode, NULL);
}
}
find_overloaded_objs(cache_domains, &info);
find_overloaded_objs(packages, &info);
find_overloaded_objs(numa_nodes, &info);
}
static void dump_workload(struct irq_info *info, void *unused __attribute__((unused)))
{
log(TO_CONSOLE, LOG_INFO, "Interrupt %i node_num %d (class %s) has workload %lu \n",
info->irq, irq_numa_node(info)->number, classes[info->class], (unsigned long)info->load);
}
void dump_workloads(void)
{
for_each_irq(NULL, dump_workload, NULL);
}
07070100000018000041ED0000000000000000000000026569B9D300000000000000000000000000000000000000000000002500000000irqbalance-1.9.3.10.git+1a7d461/misc07070100000019000081A40000000000000000000000016569B9D3000000C1000000000000000000000000000000000000003900000000irqbalance-1.9.3.10.git+1a7d461/misc/90-irqbalance.rules# Udev rules for irqbalance. On every device add or remove, we want to rescan
# our irq list to make sure it hasn't changed
#
ACTION=="add|remove", RUN+="/usr/bin/killall -SIGHUP irqbalance"
0707010000001A000081A40000000000000000000000016569B9D300000577000000000000000000000000000000000000003400000000irqbalance-1.9.3.10.git+1a7d461/misc/irqbalance.env# irqbalance is a daemon process that distributes interrupts across
# CPUs on SMP systems. The default is to rebalance once every 10
# seconds. This is the environment file that is specified to systemd via the
# EnvironmentFile key in the service unit file (or via whatever method the init
# system you're using has).
#
# IRQBALANCE_ONESHOT
# After starting, wait for ten seconds, then look at the interrupt
# load and balance it once; after balancing exit and do not change
# it again.
#
#IRQBALANCE_ONESHOT=
#
# IRQBALANCE_BANNED_CPUS
# 64 bit bitmask which allows you to indicate which CPUs should
# be skipped when reblancing IRQs. CPU numbers which have their
# corresponding bits set to one in this mask will not have any
# IRQs assigned to them on rebalance.
#
#IRQBALANCE_BANNED_CPUS=
#
# IRQBALANCE_BANNED_CPULIST
# The CPUs list which allows you to indicate which CPUs should
# be skipped when reblancing IRQs. CPU numbers in CPUs list will
# not have any IRQs assigned to them on rebalance.
#
# The format of CPUs list is:
# <cpu number>,...,<cpu number>
# or a range:
# <cpu number>-<cpu number>
# or a mixture:
# <cpu number>,...,<cpu number>-<cpu number>
#
#IRQBALANCE_BANNED_CPULIST=
#
# IRQBALANCE_ARGS
# Append any args here to the irqbalance daemon as documented in the man
# page.
#
#IRQBALANCE_ARGS=
0707010000001B000041ED0000000000000000000000026569B9D300000000000000000000000000000000000000000000003900000000irqbalance-1.9.3.10.git+1a7d461/misc/irqbalance.policy.d0707010000001C000081A40000000000000000000000016569B9D300000546000000000000000000000000000000000000005600000000irqbalance-1.9.3.10.git+1a7d461/misc/irqbalance.policy.d/follow-affinity-hint.example#!/bin/sh
# Do not edit this file, create your own policy script and make it
# executable for irqbalance process, you can use this file as an
# boilerplate.
SYS_DEV_PATH=$1
IRQ_NUM=$2
IRQ_PATH=/proc/irq/$IRQ_NUM
UEVENT_FILE=$SYS_DEV_PATH/uevent
# Scripts below is an example for banning certain IRQs from
# irqbalance and strictly apply their affinity_hint setting
[[ ! -e $UEVENT_FILE ]] && exit 1
# IRQs from following drivers will be handled by this script
# Driver names should be separated by space
AFFINITY_WHITELIST=""
while read line; do
if [[ $line == "DRIVER="* ]] && \
[[ " $AFFINITY_WHITELIST " == *" ${line#DRIVER=} "* ]]; then
affinity_hint=$(cat $IRQ_PATH/affinity_hint 2>/dev/null)
# Check if affinity_hint value have at least one bit set
if [[ ! "$affinity_hint" =~ ^[0,]*$ ]]; then
# Ban it from irqbalance so it won't get balanced,
# we'll follow its affinity_hint setting
echo "ban=true"
# If the affinity_hint value is valid, kernel would set
# the same value for smp_affinity. But force to set that
# again in case the IRQ was balanced before.
echo "$affinity_hint" > $IRQ_PATH/smp_affinity
# Stop further script processing
exit 0
fi
fi
done <<< "$(cat $UEVENT_FILE)"
exit 1
0707010000001D000081A40000000000000000000000016569B9D3000001DD000000000000000000000000000000000000003800000000irqbalance-1.9.3.10.git+1a7d461/misc/irqbalance.service[Unit]
Description=irqbalance daemon
Documentation=man:irqbalance(1)
Documentation=https://github.com/Irqbalance/irqbalance
ConditionVirtualization=!container
ConditionCPUs=>1
[Service]
EnvironmentFile=-/usr/lib/irqbalance/defaults.env
EnvironmentFile=-/path/to/irqbalance.env
ExecStart=/usr/sbin/irqbalance $IRQBALANCE_ARGS
ReadOnlyPaths=/
ReadWritePaths=/proc/irq
RestrictAddressFamilies=AF_UNIX AF_NETLINK
RuntimeDirectory=irqbalance/
[Install]
WantedBy=multi-user.target
0707010000001E000081A40000000000000000000000016569B9D300000C99000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/non-atomic.h/*
This file is copied from the Linux kernel and mildly adjusted for use in userspace
*/
#ifndef _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
#define _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
#define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
/**
* __set_bit - Set a bit in memory
* @nr: the bit to set
* @addr: the address to start counting from
*
* Unlike set_bit(), this function is non-atomic and may be reordered.
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
static inline void set_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
*p |= mask;
}
static inline void clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
*p &= ~mask;
}
/**
* __change_bit - Toggle a bit in memory
* @nr: the bit to change
* @addr: the address to start counting from
*
* Unlike change_bit(), this function is non-atomic and may be reordered.
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
static inline void __change_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
*p ^= mask;
}
/**
* __test_and_set_bit - Set a bit and return its old value
* @nr: Bit to set
* @addr: Address to count from
*
* This operation is non-atomic and can be reordered.
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
unsigned long old = *p;
*p = old | mask;
return (old & mask) != 0;
}
/**
* __test_and_clear_bit - Clear a bit and return its old value
* @nr: Bit to clear
* @addr: Address to count from
*
* This operation is non-atomic and can be reordered.
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
unsigned long old = *p;
*p = old & ~mask;
return (old & mask) != 0;
}
/* WARNING: non atomic and it can be reordered! */
static inline int __test_and_change_bit(int nr,
volatile unsigned long *addr)
{
unsigned long mask = BITOP_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
unsigned long old = *p;
*p = old ^ mask;
return (old & mask) != 0;
}
/**
* test_bit - Determine whether a bit is set
* @nr: bit number to test
* @addr: Address to start counting from
*/
static inline int test_bit(int nr, const volatile unsigned long *addr)
{
return 1UL & (addr[BITOP_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}
#endif /* _ASM_GENERIC_BITOPS_NON_ATOMIC_H_ */
0707010000001F000081A40000000000000000000000016569B9D300000E57000000000000000000000000000000000000002700000000irqbalance-1.9.3.10.git+1a7d461/numa.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/*
* This file tries to map numa affinity of pci devices to their interrupts
* In addition the PCI class information is used to refine the classification
* of interrupt sources
*/
#include "config.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <dirent.h>
#include "irqbalance.h"
#define SYSFS_NODE_PATH "/sys/devices/system/node"
GList *numa_nodes = NULL;
static void add_one_node(int nodeid)
{
char path[PATH_MAX];
struct topo_obj *new;
new = calloc(1, sizeof(struct topo_obj));
if (!new) {
need_rebuild = 1;
return;
}
if (nodeid == NUMA_NO_NODE) {
cpus_setall(new->mask);
} else {
cpus_clear(new->mask);
sprintf(path, "%s/node%d/cpumap", SYSFS_NODE_PATH, nodeid);
process_one_line(path, get_mask_from_bitmap, &new->mask);
}
new->obj_type = OBJ_TYPE_NODE;
new->number = nodeid;
new->obj_type_list = &numa_nodes;
numa_nodes = g_list_append(numa_nodes, new);
}
void build_numa_node_list(void)
{
DIR *dir;
struct dirent *entry;
/* Add the unspecified node */
add_one_node(NUMA_NO_NODE);
if (!numa_avail)
return;
dir = opendir(SYSFS_NODE_PATH);
if (!dir)
return;
do {
entry = readdir(dir);
if (!entry)
break;
if ((entry->d_type == DT_DIR) &&
(strncmp(entry->d_name, "node", 4) == 0) &&
isdigit(entry->d_name[4])) {
add_one_node(strtoul(&entry->d_name[4], NULL, 10));
}
} while (entry);
closedir(dir);
}
void free_numa_node_list(void)
{
g_list_free_full(numa_nodes, free_cpu_topo);
numa_nodes = NULL;
}
static gint compare_node(gconstpointer a, gconstpointer b)
{
const struct topo_obj *ai = a;
const struct topo_obj *bi = b;
return (ai->number == bi->number) ? 0 : 1;
}
void connect_cpu_mem_topo(struct topo_obj *p, void *data __attribute__((unused)))
{
GList *entry;
struct topo_obj *node;
int len;
len = g_list_length(p->numa_nodes);
if (len == 0) {
return;
} else if (len > 1) {
for_each_object(p->children, connect_cpu_mem_topo, NULL);
return;
}
entry = g_list_first(p->numa_nodes);
node = entry->data;
if (p->obj_type == OBJ_TYPE_PACKAGE && !p->parent)
p->parent = node;
entry = g_list_find(node->children, p);
if (!entry)
node->children = g_list_append(node->children, p);
}
void dump_numa_node_info(struct topo_obj *d, void *unused __attribute__((unused)))
{
char buffer[4096];
log(TO_CONSOLE, LOG_INFO, "NUMA NODE NUMBER: %d\n", d->number);
cpumask_scnprintf(buffer, 4096, d->mask);
log(TO_CONSOLE, LOG_INFO, "LOCAL CPU MASK: %s\n", buffer);
log(TO_CONSOLE, LOG_INFO, "\n");
}
struct topo_obj *get_numa_node(int nodeid)
{
struct topo_obj find;
GList *entry;
find.number = numa_avail ? nodeid : NUMA_NO_NODE;
entry = g_list_find_custom(numa_nodes, &find, compare_node);
return entry ? entry->data : NULL;
}
07070100000020000081A40000000000000000000000016569B9D30000146A000000000000000000000000000000000000002C00000000irqbalance-1.9.3.10.git+1a7d461/placement.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhoramn@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include "types.h"
#include "irqbalance.h"
GList *rebalance_irq_list;
struct obj_placement {
struct topo_obj *best;
uint64_t best_cost;
struct irq_info *info;
};
static void find_best_object(struct topo_obj *d, void *data)
{
struct obj_placement *best = (struct obj_placement *)data;
uint64_t newload;
/*
* Don't consider the unspecified numa node here
*/
if (numa_avail && (d->obj_type == OBJ_TYPE_NODE) && (d->number == NUMA_NO_NODE))
return;
/*
* also don't consider any node that doesn't have at least one cpu in
* the unbanned list
*/
if ((d->obj_type == OBJ_TYPE_NODE) &&
(!cpus_intersects(d->mask, unbanned_cpus)))
return;
if (d->powersave_mode)
return;
newload = d->load;
if (newload < best->best_cost) {
best->best = d;
best->best_cost = newload;
} else if (newload == best->best_cost) {
if (g_list_length(d->interrupts) < g_list_length(best->best->interrupts)) {
best->best = d;
}
}
}
static void find_best_object_for_irq(struct irq_info *info, void *data)
{
struct obj_placement place;
struct topo_obj *d = data;
struct topo_obj *asign;
if (!info->moved)
return;
switch (d->obj_type) {
case OBJ_TYPE_NODE:
if (info->level == BALANCE_NONE)
return;
break;
case OBJ_TYPE_PACKAGE:
if (info->level == BALANCE_PACKAGE)
return;
break;
case OBJ_TYPE_CACHE:
if (info->level == BALANCE_CACHE)
return;
break;
case OBJ_TYPE_CPU:
if (info->level == BALANCE_CORE)
return;
break;
}
place.info = info;
place.best = NULL;
place.best_cost = ULLONG_MAX;
for_each_object(d->children, find_best_object, &place);
asign = place.best;
if (asign) {
migrate_irq(&d->interrupts, &asign->interrupts, info);
info->assigned_obj = asign;
asign->load += info->load;
}
}
static void place_irq_in_object(struct topo_obj *d, void *data __attribute__((unused)))
{
if (g_list_length(d->interrupts) > 0)
for_each_irq(d->interrupts, find_best_object_for_irq, d);
}
static void place_irq_in_node(struct irq_info *info, void *data __attribute__((unused)))
{
struct obj_placement place;
struct topo_obj *asign;
if ((info->level == BALANCE_NONE) && cpus_empty(banned_cpus))
return;
if (irq_numa_node(info)->number != NUMA_NO_NODE || !numa_avail) {
/*
* Need to make sure this node is elligible for migration
* given the banned cpu list
*/
if (!cpus_intersects(irq_numa_node(info)->mask, unbanned_cpus)) {
log(TO_CONSOLE, LOG_WARNING, "There is no suitable CPU in node:%d.\n", irq_numa_node(info)->number);
log(TO_CONSOLE, LOG_WARNING, "Irqbalance dispatch irq:%d to other node.\n", info->irq);
goto find_placement;
}
/*
* This irq belongs to a device with a preferred numa node
* put it on that node
*/
migrate_irq(&rebalance_irq_list, &irq_numa_node(info)->interrupts, info);
info->assigned_obj = irq_numa_node(info);
irq_numa_node(info)->load += info->load + 1;
return;
}
find_placement:
place.best_cost = ULLONG_MAX;
place.best = NULL;
place.info = info;
for_each_object(numa_nodes, find_best_object, &place);
asign = place.best;
if (asign) {
migrate_irq(&rebalance_irq_list, &asign->interrupts, info);
info->assigned_obj = asign;
asign->load += info->load;
}
}
static void validate_irq(struct irq_info *info, void *data)
{
if (info->assigned_obj != data)
log(TO_CONSOLE, LOG_INFO, "object validation error: irq %d is wrong, points to %p, should be %p\n",
info->irq, info->assigned_obj, data);
}
static void validate_object(struct topo_obj *d, void *data __attribute__((unused)))
{
if (g_list_length(d->interrupts) > 0)
for_each_irq(d->interrupts, validate_irq, d);
}
static void validate_object_tree_placement(void)
{
for_each_object(packages, validate_object, NULL);
for_each_object(cache_domains, validate_object, NULL);
for_each_object(cpus, validate_object, NULL);
}
void calculate_placement(void)
{
sort_irq_list(&rebalance_irq_list);
if (g_list_length(rebalance_irq_list) > 0) {
for_each_irq(rebalance_irq_list, place_irq_in_node, NULL);
for_each_object(numa_nodes, place_irq_in_object, NULL);
for_each_object(packages, place_irq_in_object, NULL);
for_each_object(cache_domains, place_irq_in_object, NULL);
}
if (debug_mode)
validate_object_tree_placement();
}
07070100000021000081A40000000000000000000000016569B9D30000338D000000000000000000000000000000000000003100000000irqbalance-1.9.3.10.git+1a7d461/procinterrupts.c/*
* Copyright (C) 2006, Intel Corporation
* Copyright (C) 2012, Neil Horman <nhorman@tuxdriver.com>
*
* This file is part of irqbalance
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <syslog.h>
#include <ctype.h>
#include <errno.h>
#include "cpumask.h"
#include "irqbalance.h"
#ifdef AARCH64
#include <sys/types.h>
#include <regex.h>
#include <dirent.h>
#endif
#define LINESIZE 4096
static int proc_int_has_msi = 0;
static int msi_found_in_sysfs = 0;
#ifdef AARCH64
struct irq_match {
char *matchstring;
regex_t rcomp;
int (*refine_match)(char *name, struct irq_info *info);
int type;
int class;
};
static int check_platform_device(char *name, struct irq_info *info)
{
DIR *dirfd;
char path[512];
struct dirent *ent;
int rc = -ENOENT, i;
static struct pdev_irq_info {
char *d_name;
int type;
int class;
} pdev_irq_info[] = {
{"ata", IRQ_TYPE_LEGACY, IRQ_SCSI},
{"net", IRQ_TYPE_LEGACY, IRQ_ETH},
{"usb", IRQ_TYPE_LEGACY, IRQ_OTHER},
{NULL},
};
memset(path, 0, 512);
strcat(path, "/sys/devices/platform/");
strcat(path, name);
strcat(path, "/");
dirfd = opendir(path);
if (!dirfd) {
log(TO_ALL, LOG_DEBUG, "No directory %s: %s\n", path, strerror(errno));
return -ENOENT;
}
while ((ent = readdir(dirfd)) != NULL) {
log(TO_ALL, LOG_DEBUG, "Checking entry %s\n", ent->d_name);
for (i = 0; pdev_irq_info[i].d_name != NULL; i++) {
if (!strncmp(ent->d_name, pdev_irq_info[i].d_name, strlen(pdev_irq_info[i].d_name))) {
info->type = pdev_irq_info[i].type;
info->class = pdev_irq_info[i].class;
rc = 0;
goto out;
}
}
}
out:
closedir(dirfd);
log(TO_ALL, LOG_DEBUG, "IRQ %s is of type %d and class %d\n", name, info->type, info->class);
return rc;
}
static void guess_arm_irq_hints(char *name, struct irq_info *info)
{
int i, rc;
static int compiled = 0;
/* Note: Last entry is a catchall */
static struct irq_match matches[] = {
{ "eth.*" , {0},NULL, IRQ_TYPE_LEGACY, IRQ_GBETH },
{ "[A-Z0-9]{4}[0-9a-f]{4}", {0}, check_platform_device, IRQ_TYPE_LEGACY, IRQ_OTHER},
{ "PNP[0-9a-f]{4}", {0}, check_platform_device, IRQ_TYPE_LEGACY, IRQ_OTHER},
{ ".*", {0}, NULL, IRQ_TYPE_LEGACY, IRQ_OTHER},
{NULL},
};
if (!compiled) {
for (i=0; matches[i].matchstring != NULL; i++) {
rc = regcomp(&matches[i].rcomp, matches[i].matchstring, REG_EXTENDED | REG_NOSUB);
if (rc) {
char errbuf[256];
regerror(rc, &matches[i].rcomp, errbuf, 256);
log(TO_ALL, LOG_WARNING, "WARNING: Failed to compile regex %s : %s\n",
matches[i].matchstring, errbuf);
return;
}
}
compiled = 1;
}
for (i=0; matches[i].matchstring != NULL; i++) {
if (!regexec(&matches[i].rcomp, name, 0, NULL, 0)) {
info->type = matches[i].type;
info->class = matches[i].class;
if (matches[i].refine_match)
matches[i].refine_match(name, info);
log(TO_ALL, LOG_DEBUG, "IRQ %s(%d) guessed as class %d\n", name, info->irq,info->class);
break;
}
}
}
#endif
void init_irq_class_and_type(char *savedline, struct irq_info *info, int irq)
{
char *irq_name = NULL;
char *savedptr = NULL;
char *last_token = NULL;
char *p = NULL;
int is_xen_dyn = 0;
char irq_fullname[PATH_MAX] = {0};
#ifdef AARCH64
char *tmp = NULL;
#endif
irq_name = strtok_r(savedline, " ", &savedptr);
if (strstr(irq_name, "xen-dyn") != NULL)
is_xen_dyn = 1;
last_token = strtok_r(NULL, " ", &savedptr);
while ((p = strtok_r(NULL, " ", &savedptr))) {
irq_name = last_token;
if (strstr(irq_name, "xen-dyn") != NULL)
is_xen_dyn = 1;
last_token = p;
#ifdef AARCH64
/*
* /proc/interrupts format defined, after of interrupt type
* the reset string is mark the irq desc name.
*/
if (strncmp(irq_name, "Level", strlen("Level")) == 0 ||
strncmp(irq_name, "Edge", strlen("Edge")) == 0)
break;
#endif
}
#ifdef AARCH64
if (savedptr && strlen(savedptr) > 0)
snprintf(irq_fullname, PATH_MAX, "%s %s", last_token, savedptr);
else
snprintf(irq_fullname, PATH_MAX, "%s", last_token);
tmp = strchr(irq_fullname, '\n');
if (tmp)
*tmp = 0;
#else
snprintf(irq_fullname, PATH_MAX, "%s", last_token);
#endif
info->irq = irq;
if (strstr(irq_fullname, "-event") != NULL && is_xen_dyn == 1) {
info->type = IRQ_TYPE_VIRT_EVENT;
info->class = IRQ_VIRT_EVENT;
} else {
#ifdef AARCH64
guess_arm_irq_hints(irq_fullname, info);
#else
info->type = IRQ_TYPE_LEGACY;
info->class = IRQ_OTHER;
#endif
}
info->numa_node = get_numa_node(0);
info->name = strdup(irq_fullname);
}
GList* collect_full_irq_list()
{
GList *tmp_list = NULL;
FILE *file;
char *line = NULL;
size_t size = 0;
file = fopen("/proc/interrupts", "r");
if (!file)
return NULL;
/* first line is the header we don't need; nuke it */
if (getline(&line, &size, file)<=0) {
free(line);
fclose(file);
return NULL;
}
while (!feof(file)) {
int number;
struct irq_info *info;
char *c;
char *savedline = NULL;
if (getline(&line, &size, file)<=0)
break;
/* lines with letters in front are special, like NMI count. Ignore */
c = line;
while (isblank(*(c)))
c++;
if (!isdigit(*c))
break;
c = strchr(line, ':');
if (!c)
continue;
savedline = strdup(line);
if (!savedline)
break;
*c = 0;
number = strtoul(line, NULL, 10);
info = calloc(1, sizeof(struct irq_info));
if (info) {
init_irq_class_and_type(savedline, info, number);
tmp_list = g_list_append(tmp_list, info);
}
free(savedline);
}
fclose(file);
free(line);
return tmp_list;
}
void parse_proc_interrupts(void)
{
FILE *file;
char *line = NULL;
size_t size = 0;
int ret;
file = fopen("/proc/interrupts", "r");
if (!file)
return;
/* first line is the header we don't need; nuke it */
if (getline(&line, &size, file)<=0) {
free(line);
fclose(file);
return;
}
while (!feof(file)) {
int cpunr;
int number;
uint64_t count;
char *c, *c2;
struct irq_info *info;
char *savedline = NULL;
if (getline(&line, &size, file)<=0)
break;
if (!proc_int_has_msi)
if (strstr(line, "MSI") != NULL)
proc_int_has_msi = 1;
/* lines with letters in front are special, like NMI count. Ignore */
c = line;
while (isblank(*(c)))
c++;
if (!isdigit(*c))
break;
c = strchr(line, ':');
if (!c)
continue;
savedline = strdup(line);
if (!savedline)
break;
*c = 0;
c++;
number = strtoul(line, NULL, 10);
info = get_irq_info(number);
if (!info) {
ret = proc_irq_hotplug(savedline, number, &info);
if (ret < 0) {
/* hotplug fail, need to rescan */
need_rescan = 1;
free(savedline);
break;
}
}
info->existing = 1;
free(savedline);
count = 0;
cpunr = 0;
c2=NULL;
while (1) {
uint64_t C;
C = strtoull(c, &c2, 10);
if (c==c2 || !strchr(" \t", *c2)) /* end of numbers */
break;
count += C;
c=c2;
cpunr++;
}
if (cpunr != num_online_cpus()) {
need_rescan = 1;
break;
}
/* IRQ removed and reinserted, need restart or this will
* cause an overflow and IRQ won't be rebalanced again
*/
if (count < info->irq_count) {
need_rescan = 1;
break;
}
info->last_irq_count = info->irq_count;
info->irq_count = count;
/* is interrupt MSI based? */
if ((info->type == IRQ_TYPE_MSI) || (info->type == IRQ_TYPE_MSIX))
msi_found_in_sysfs = 1;
}
if ((proc_int_has_msi) && (!msi_found_in_sysfs) && (!need_rescan)) {
log(TO_ALL, LOG_WARNING, "WARNING: MSI interrupts found in /proc/interrupts\n");
log(TO_ALL, LOG_WARNING, "But none found in sysfs, you need to update your kernel\n");
log(TO_ALL, LOG_WARNING, "Until then, IRQs will be improperly classified\n");
/*
* Set msi_found_in_sysfs, so we don't get this error constantly
*/
msi_found_in_sysfs = 1;
}
if (!need_rescan)
clear_no_existing_irqs();
fclose(file);
free(line);
}
static void assign_load_slice(struct irq_info *info, void *data)
{
uint64_t *load_slice = data;
info->load = (info->irq_count - info->last_irq_count) * *load_slice;
/*
* Every IRQ has at least a load of 1
*/
if (!info->load)
info->load++;
}
/*
* Recursive helper to estimate the number of irqs shared between
* multiple topology objects that was handled by this particular object
*/
static uint64_t get_parent_branch_irq_count_share(struct topo_obj *d)
{
uint64_t total_irq_count = 0;
if (d->parent) {
total_irq_count = get_parent_branch_irq_count_share(d->parent);
total_irq_count /= g_list_length((d->parent)->children);
}
total_irq_count += d->irq_count;
return total_irq_count;
}
static void get_children_branch_irq_count(struct topo_obj *d, void *data)
{
uint64_t *total_irq_count = data;
if (g_list_length(d->children) > 0)
for_each_object(d->children, get_children_branch_irq_count, total_irq_count);
*total_irq_count += d->irq_count;
}
static void compute_irq_branch_load_share(struct topo_obj *d, void *data __attribute__((unused)))
{
uint64_t local_irq_counts = 0;
uint64_t load_slice;
if (g_list_length(d->interrupts) > 0) {
local_irq_counts = get_parent_branch_irq_count_share(d);
if (g_list_length(d->children) > 0)
for_each_object(d->children, get_children_branch_irq_count, &local_irq_counts);
load_slice = local_irq_counts ? (d->load / local_irq_counts) : 1;
for_each_irq(d->interrupts, assign_load_slice, &load_slice);
}
}
static void accumulate_irq_count(struct irq_info *info, void *data)
{
uint64_t *acc = data;
*acc += (info->irq_count - info->last_irq_count);
}
static void accumulate_interrupts(struct topo_obj *d, void *data __attribute__((unused)))
{
if (g_list_length(d->children) > 0) {
for_each_object(d->children, accumulate_interrupts, NULL);
}
d->irq_count = 0;
if (g_list_length(d->interrupts) > 0)
for_each_irq(d->interrupts, accumulate_irq_count, &(d->irq_count));
}
static void accumulate_load(struct topo_obj *d, void *data)
{
uint64_t *load = data;
*load += d->load;
}
static void set_load(struct topo_obj *d, void *data __attribute__((unused)))
{
if (g_list_length(d->children) > 0) {
for_each_object(d->children, set_load, NULL);
d->load = 0;
for_each_object(d->children, accumulate_load, &(d->load));
}
}
void parse_proc_stat(void)
{
FILE *file;
char *line = NULL;
size_t size = 0;
int cpunr, rc, cpucount;
struct topo_obj *cpu;
unsigned long long irq_load, softirq_load;
file = fopen("/proc/stat", "r");
if (!file) {
log(TO_ALL, LOG_WARNING, "WARNING cant open /proc/stat. balancing is broken\n");
return;
}
/* first line is the header we don't need; nuke it */
if (getline(&line, &size, file)<=0) {
free(line);
log(TO_ALL, LOG_WARNING, "WARNING read /proc/stat. balancing is broken\n");
fclose(file);
return;
}
cpucount = 0;
while (!feof(file)) {
if (getline(&line, &size, file)<=0)
break;
if (!strstr(line, "cpu"))
break;
cpunr = strtoul(&line[3], NULL, 10);
if (cpu_isset(cpunr, banned_cpus))
continue;
rc = sscanf(line, "%*s %*u %*u %*u %*u %*u %llu %llu", &irq_load, &softirq_load);
if (rc < 2)
break;
cpu = find_cpu_core(cpunr);
if (!cpu)
break;
cpucount++;
/*
* For each cpu add the irq and softirq load and propagate that
* all the way up the device tree
*/
if (cycle_count) {
cpu->load = (irq_load + softirq_load) - (cpu->last_load);
/*
* the [soft]irq_load values are in jiffies, with
* HZ jiffies per second. Convert the load to nanoseconds
* to get a better integer resolution of nanoseconds per
* interrupt.
*/
cpu->load *= NSEC_PER_SEC/HZ;
}
cpu->last_load = (irq_load + softirq_load);
}
fclose(file);
free(line);
if (cpucount != get_cpu_count()) {
log(TO_ALL, LOG_WARNING, "WARNING, didn't collect load info for all cpus, balancing is broken\n");
return;
}
/*
* Set the load values for all objects above cpus
*/
for_each_object(numa_nodes, set_load, NULL);
/*
* Collect local irq_count on each object
*/
for_each_object(numa_nodes, accumulate_interrupts, NULL);
/*
* Now that we have load for each cpu attribute a fair share of the load
* to each irq on that cpu
*/
for_each_object(cpus, compute_irq_branch_load_share, NULL);
for_each_object(cache_domains, compute_irq_branch_load_share, NULL);
for_each_object(packages, compute_irq_branch_load_share, NULL);
for_each_object(numa_nodes, compute_irq_branch_load_share, NULL);
}
07070100000022000041ED0000000000000000000000026569B9D300000000000000000000000000000000000000000000002600000000irqbalance-1.9.3.10.git+1a7d461/tests07070100000023000081A40000000000000000000000016569B9D300000035000000000000000000000000000000000000003200000000irqbalance-1.9.3.10.git+1a7d461/tests/Makefile.amcheck_SCRIPTS = runoneshot.sh
TESTS = runoneshot.sh
07070100000024000081ED0000000000000000000000016569B9D30000003E000000000000000000000000000000000000003400000000irqbalance-1.9.3.10.git+1a7d461/tests/runoneshot.sh#!/bin/sh
exec ../irqbalance --debug --oneshot --foreground
07070100000025000081A40000000000000000000000016569B9D3000036FD000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/thermal.c/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <stdio.h>
#include <sys/sysinfo.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include "irqbalance.h"
cpumask_t thermal_banned_cpus;
/* Events of thermal_genl_family */
enum thermal_genl_event {
THERMAL_GENL_EVENT_UNSPEC,
THERMAL_GENL_EVENT_TZ_CREATE, /* Thermal zone creation */
THERMAL_GENL_EVENT_TZ_DELETE, /* Thermal zone deletion */
THERMAL_GENL_EVENT_TZ_DISABLE, /* Thermal zone disabled */
THERMAL_GENL_EVENT_TZ_ENABLE, /* Thermal zone enabled */
THERMAL_GENL_EVENT_TZ_TRIP_UP, /* Trip point crossed the way up */
THERMAL_GENL_EVENT_TZ_TRIP_DOWN, /* Trip point crossed the way down */
THERMAL_GENL_EVENT_TZ_TRIP_CHANGE, /* Trip point changed */
THERMAL_GENL_EVENT_TZ_TRIP_ADD, /* Trip point added */
THERMAL_GENL_EVENT_TZ_TRIP_DELETE, /* Trip point deleted */
THERMAL_GENL_EVENT_CDEV_ADD, /* Cdev bound to the thermal zone */
THERMAL_GENL_EVENT_CDEV_DELETE, /* Cdev unbound */
THERMAL_GENL_EVENT_CDEV_STATE_UPDATE, /* Cdev state updated */
THERMAL_GENL_EVENT_TZ_GOV_CHANGE, /* Governor policy changed */
THERMAL_GENL_EVENT_CAPACITY_CHANGE, /* CPU capacity changed */
__THERMAL_GENL_EVENT_MAX,
};
#define THERMAL_GENL_EVENT_MAX (__THERMAL_GENL_EVENT_MAX - 1)
/* Attributes of thermal_genl_family */
enum thermal_genl_attr {
THERMAL_GENL_ATTR_UNSPEC,
THERMAL_GENL_ATTR_TZ,
THERMAL_GENL_ATTR_TZ_ID,
THERMAL_GENL_ATTR_TZ_TEMP,
THERMAL_GENL_ATTR_TZ_TRIP,
THERMAL_GENL_ATTR_TZ_TRIP_ID,
THERMAL_GENL_ATTR_TZ_TRIP_TYPE,
THERMAL_GENL_ATTR_TZ_TRIP_TEMP,
THERMAL_GENL_ATTR_TZ_TRIP_HYST,
THERMAL_GENL_ATTR_TZ_MODE,
THERMAL_GENL_ATTR_TZ_NAME,
THERMAL_GENL_ATTR_TZ_CDEV_WEIGHT,
THERMAL_GENL_ATTR_TZ_GOV,
THERMAL_GENL_ATTR_TZ_GOV_NAME,
THERMAL_GENL_ATTR_CDEV,
THERMAL_GENL_ATTR_CDEV_ID,
THERMAL_GENL_ATTR_CDEV_CUR_STATE,
THERMAL_GENL_ATTR_CDEV_MAX_STATE,
THERMAL_GENL_ATTR_CDEV_NAME,
THERMAL_GENL_ATTR_GOV_NAME,
THERMAL_GENL_ATTR_CAPACITY,
THERMAL_GENL_ATTR_CAPACITY_CPU_COUNT,
THERMAL_GENL_ATTR_CAPACITY_CPU_ID,
THERMAL_GENL_ATTR_CAPACITY_CPU_PERF,
THERMAL_GENL_ATTR_CAPACITY_CPU_EFF,
__THERMAL_GENL_ATTR_MAX,
};
#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
#define INVALID_NL_FD -1
#define MAX_RECV_ERRS 2
#define SYSCONF_ERR -1
#define INVALID_EVENT_VALUE -1
#define THERMAL_GENL_FAMILY_NAME "thermal"
#define THERMAL_GENL_EVENT_GROUP_NAME "event"
#define NL_FAMILY_NAME "nlctrl"
struct family_data {
const char *group;
int id;
};
static struct nl_sock *sock;
static struct nl_cb *callback;
/*
* return value: TRUE with an error; otherwise, FALSE
*/
static gboolean prepare_netlink(void)
{
int rc;
sock = nl_socket_alloc();
if (!sock) {
log(TO_ALL, LOG_ERR, "thermal: socket allocation failed.\n");
return TRUE;
}
rc = genl_connect(sock);
if (rc) {
log(TO_ALL, LOG_INFO, "thermal: socket bind failed.\n");
return TRUE;
}
callback = nl_cb_alloc(NL_CB_DEFAULT);
if (!callback) {
log(TO_ALL, LOG_WARNING, "thermal: callback allocation failed.\n");
return TRUE;
}
return FALSE;
}
static int handle_groupid(struct nl_msg *msg, void *arg)
{
struct nlattr *attrhdr, *mcgrp, *cur_mcgrp;
struct nlattr *attrs[CTRL_ATTR_MAX + 1];
struct nla_policy *policy = NULL;
struct genlmsghdr *gnlhdr = NULL;
struct family_data *data = NULL;
struct nlmsghdr *msghdr = NULL;
int attrlen, rc, i;
if (!arg) {
log(TO_ALL, LOG_WARNING, "thermal: group id - failed to receive argument.\n");
return NL_SKIP;
}
data = arg;
/* get actual netlink message header */
msghdr = nlmsg_hdr(msg);
/* get the start of the message payload */
gnlhdr = nlmsg_data(msghdr);
/* get the start of the message attribute section */
attrhdr = genlmsg_attrdata(gnlhdr, 0);
/* get the length of the message attribute section */
attrlen = genlmsg_attrlen(gnlhdr, 0);
/* create attribute index based on a stream of attributes */
rc = nla_parse(
attrs, /* index array to be filled */
CTRL_ATTR_MAX, /* the maximum acceptable attribute type */
attrhdr, /* head of attribute stream */
attrlen, /* length of attribute stream */
policy); /* validation policy */
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: group id - failed to create attributes.\n");
return NL_SKIP;
}
/* start of the multi-cast group attribute */
mcgrp = attrs[CTRL_ATTR_MCAST_GROUPS];
if (!mcgrp) {
log(TO_ALL, LOG_WARNING, "thermal: group id - no multi-cast group attributes.\n");
return NL_SKIP;
}
/* iterate a stream of nested attributes to get the group id */
nla_for_each_nested(cur_mcgrp, mcgrp, i) {
struct nlattr *nested_attrs[CTRL_ATTR_MCAST_GRP_MAX + 1];
struct nlattr *name, *id;
/* get start and length of payload section */
attrhdr = nla_data(cur_mcgrp);
attrlen = nla_len(cur_mcgrp);
rc = nla_parse(nested_attrs, CTRL_ATTR_MCAST_GRP_MAX, attrhdr, attrlen, policy);
if (rc)
continue;
name = nested_attrs[CTRL_ATTR_MCAST_GRP_NAME];
id = nested_attrs[CTRL_ATTR_MCAST_GRP_ID];
if (!name || !id)
continue;
if (strncmp(nla_data(name), data->group, nla_len(name)) != 0)
continue;
data->id = nla_get_u32(id);
log(TO_ALL, LOG_DEBUG, "thermal: received group id (%d).\n", data->id);
break;
}
return NL_OK;
}
static int handle_error(struct sockaddr_nl *sk_addr __attribute__((unused)),
struct nlmsgerr *err, void *arg)
{
int rc = (err->error == -NLE_INTR) ? NL_STOP : NL_SKIP;
if (arg && err->error != -NLE_INTR) {
log(TO_ALL, LOG_INFO, "thermal: received a netlink error (%s).\n",
nl_geterror(err->error));
*((int *)arg) = err->error;
}
return rc;
}
static int handle_end(struct nl_msg *msg __attribute__((unused)), void *arg)
{
if (arg)
*((int *)arg) = 0;
return NL_SKIP;
}
struct msgheader {
unsigned char cmd, version;
unsigned int port, seq;
int id, hdrlen, flags;
};
static gboolean establish_netlink(void)
{
struct msgheader msghdr = { CTRL_CMD_GETFAMILY, 0, 0, 0, 0, 0, 0 };
struct family_data nldata = { THERMAL_GENL_EVENT_GROUP_NAME, -ENOENT };
struct nl_cb *cloned_callback = NULL;
int rc, group_id, callback_rc = 1;
struct nl_msg *msg = NULL;
gboolean error = TRUE;
void *hdr;
msg = nlmsg_alloc();
if (!msg) {
log(TO_ALL, LOG_WARNING, "thermal: message allocation failed.\n");
goto err_out;
}
msghdr.id = genl_ctrl_resolve(sock, NL_FAMILY_NAME);
if (msghdr.id < 0) {
log(TO_ALL, LOG_WARNING, "thermal: message id enumeration failed.\n");
goto err_out;
}
hdr = genlmsg_put(msg, msghdr.port, msghdr.seq, msghdr.id, msghdr.hdrlen,
msghdr.flags, msghdr.cmd, msghdr.version);
if (!hdr) {
log(TO_ALL, LOG_WARNING, "thermal: netlink header setup failed.\n");
goto err_out;
}
rc = nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, THERMAL_GENL_FAMILY_NAME);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: message setup failed.\n");
goto err_out;
}
cloned_callback = nl_cb_clone(callback);
if (!cloned_callback) {
log(TO_ALL, LOG_WARNING, "thermal: callback handle duplication failed.\n");
goto err_out;
}
rc = nl_send_auto(sock, msg);
if (rc < 0) {
log(TO_ALL, LOG_WARNING, "thermal: failed to send the first message.\n");
goto err_out;
}
rc = nl_cb_err(cloned_callback, NL_CB_CUSTOM, handle_error, &callback_rc);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: error callback setup failed.\n");
goto err_out;
}
rc = nl_cb_set(cloned_callback, NL_CB_ACK, NL_CB_CUSTOM, handle_end, &callback_rc);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: ack callback setup failed.\n");
goto err_out;
}
rc = nl_cb_set(cloned_callback, NL_CB_FINISH, NL_CB_CUSTOM, handle_end, &callback_rc);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: finish callback setup failed.\n");
goto err_out;
}
rc = nl_cb_set(cloned_callback, NL_CB_VALID, NL_CB_CUSTOM, handle_groupid, &nldata);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: group id callback setup failed.\n");
goto err_out;
}
while (callback_rc != 0) {
rc = nl_recvmsgs(sock, cloned_callback);
if (rc < 0) {
log(TO_ALL, LOG_WARNING, "thermal: failed to receive messages.\n");
goto err_out;
}
}
group_id = nldata.id;
if (group_id < 0) {
log(TO_ALL, LOG_WARNING, "thermal: invalid group_id was received.\n");
goto err_out;
}
rc = nl_socket_add_membership(sock, group_id);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: failed to join the netlink group.\n");
goto err_out;
}
error = FALSE;
err_out:
nl_cb_put(cloned_callback);
nlmsg_free(msg);
return error;
}
enum {
INDEX_CPUNUM,
INDEX_PERF,
INDEX_EFFI,
INDEX_MAX
};
/*
* Single netlink notification is not guaranteed to fully deliver all of
* the CPU updates per thermal event, due to the implementation choice in
* the kernel code. So, this function is intended to manage a CPU list in a
* stream of relevant notifications.
*/
static void update_banned_cpus(int cur_cpuidx, gboolean need_to_ban)
{
static cpumask_t banmask = { 0 }, itrmask = { 0 };
long max_cpunum = sysconf(_SC_NPROCESSORS_ONLN);
if (need_to_ban)
cpu_set(cur_cpuidx, banmask);
cpu_set(cur_cpuidx, itrmask);
if (cpus_weight(itrmask) < max_cpunum)
return;
if (cpus_equal(thermal_banned_cpus, banmask))
goto out;
cpus_copy(thermal_banned_cpus, banmask);
need_rescan = 1;
out:
cpus_clear(banmask);
cpus_clear(itrmask);
}
static int handle_thermal_event(struct nl_msg *msg, void *arg __attribute__((unused)))
{
int event_data[INDEX_MAX] = { INVALID_EVENT_VALUE };
struct nlattr *attrs[THERMAL_GENL_ATTR_MAX + 1];
struct genlmsghdr *genlhdr;
struct nlmsghdr *msnlh;
struct nlattr *cap;
int i, remain, rc;
void *pos;
/* get actual netlink message header */
msnlh = nlmsg_hdr(msg);
/* get a pointer to generic netlink header */
genlhdr = genlmsg_hdr(msnlh);
if (genlhdr->cmd != THERMAL_GENL_EVENT_CAPACITY_CHANGE) {
log(TO_ALL, LOG_DEBUG, "thermal: no CPU capacity change.\n");
return NL_SKIP;
}
/* parse generic netlink message including attributes */
rc = genlmsg_parse(
msnlh, /* a pointer to netlink message header */
0, /* length of user header */
attrs, /* array to store parsed attributes */
THERMAL_GENL_ATTR_MAX, /* maximum attribute id as expected */
NULL); /* validation policy */
if (rc) {
log(TO_ALL, LOG_ERR, "thermal: failed to parse message for thermal event.\n");
return NL_SKIP;
}
/* get start and length of payload section */
cap = attrs[THERMAL_GENL_ATTR_CAPACITY];
pos = nla_data(cap);
remain = nla_len(cap);
for (i = 0; nla_ok(pos, remain); pos = nla_next(pos, &remain), i++) {
gboolean valid_event = TRUE, need_to_ban;
unsigned int value = nla_get_u32(pos);
int idx = i % INDEX_MAX;
int cur_cpuidx;
event_data[idx] = value;
if (idx != INDEX_EFFI)
continue;
cur_cpuidx = event_data[INDEX_CPUNUM];
valid_event = !!(cur_cpuidx <= NR_CPUS);
if (!valid_event) {
log(TO_ALL, LOG_WARNING, "thermal: invalid event - CPU %d\n",
cur_cpuidx);
continue;
}
/*
* A CPU with no performance and no efficiency cannot
* handle IRQs:
*/
need_to_ban = !!(!event_data[INDEX_PERF] && !event_data[INDEX_EFFI]);
update_banned_cpus(cur_cpuidx, need_to_ban);
log(TO_ALL, LOG_DEBUG, "thermal: event - CPU %d, perf %d, efficiency %d.\n",
cur_cpuidx, event_data[INDEX_PERF], event_data[INDEX_EFFI]);
}
return NL_OK;
}
static int handler_for_debug(struct nl_msg *msg __attribute__((unused)),
void *arg __attribute__((unused)))
{
return NL_OK;
}
/*
* return value: TRUE with an error; otherwise, FALSE
*/
static gboolean register_netlink_handler(void)
{
int rc;
if (sysconf(_SC_NPROCESSORS_ONLN) == SYSCONF_ERR) {
log(TO_ALL, LOG_WARNING, "thermal: _SC_NPROCESSORS_ONLN not available.\n");
return TRUE;
}
rc = nl_cb_set(callback, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, handler_for_debug, NULL);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: debug handler registration failed.\n");
return TRUE;
}
rc = nl_cb_set(callback, NL_CB_VALID, NL_CB_CUSTOM, handle_thermal_event, NULL);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: thermal handler registration failed.\n");
return TRUE;
}
return FALSE;
}
/*
* return value: TRUE to keep the source; FALSE to disconnect.
*/
gboolean receive_thermal_event(gint fd __attribute__((unused)),
GIOCondition condition,
gpointer user_data __attribute__((unused)))
{
if (condition == G_IO_IN) {
static unsigned int retry = 0;
int err;
err = nl_recvmsgs(sock, callback);
if (err) {
log(TO_ALL, LOG_WARNING, "thermal: failed to receive messages (rc=%d).\n", err);
retry++;
/*
* Pass a few failures then turn off if it keeps
* failing down.
*/
if (retry <= MAX_RECV_ERRS) {
log(TO_ALL, LOG_WARNING, "thermal: but keep the connection.\n");
} else {
log(TO_ALL, LOG_WARNING, "thermal: disconnect now with %u failures.\n",
retry);
return FALSE;
}
}
}
return TRUE;
}
/*
* return value: TRUE with an error; otherwise, FALSE
*/
static gboolean set_netlink_nonblocking(void)
{
int rc, fd;
rc = nl_socket_set_nonblocking(sock);
if (rc) {
log(TO_ALL, LOG_WARNING, "thermal: non-blocking mode setup failed.\n");
return TRUE;
}
fd = nl_socket_get_fd(sock);
if (fd == INVALID_NL_FD) {
log(TO_ALL, LOG_WARNING, "thermal: file descriptor setup failed.\n");
return TRUE;
}
g_unix_fd_add(fd, G_IO_IN, receive_thermal_event, NULL);
return FALSE;
}
void deinit_thermal(void)
{
if (callback) {
nl_cb_put(callback);
callback = NULL;
}
if (sock) {
nl_socket_free(sock);
sock = NULL;
}
}
/*
* return value: TRUE with an error; otherwise, FALSE
*/
gboolean init_thermal(void)
{
gboolean error;
error = prepare_netlink();
if (error)
goto err_out;
error = establish_netlink();
if (error)
goto err_out;
error = register_netlink_handler();
if (error)
goto err_out;
error = set_netlink_nonblocking();
if (error)
goto err_out;
return FALSE;
err_out:
deinit_thermal();
return TRUE;
}
07070100000026000081A40000000000000000000000016569B9D300000150000000000000000000000000000000000000002A00000000irqbalance-1.9.3.10.git+1a7d461/thermal.h#ifndef __LINUX_THERMAL_H_
#define __LINUX_THERMAL_H_
#include <glib.h>
#ifdef HAVE_THERMAL
gboolean init_thermal(void);
void deinit_thermal(void);
extern cpumask_t thermal_banned_cpus;
#else
static inline gboolean init_thermal(void) { return FALSE; }
#define deinit_thermal() do { } while (0)
#endif
#endif /* __LINUX_THERMAL_H_ */
07070100000027000081A40000000000000000000000016569B9D300000555000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/types.h#ifndef _INCLUDE_GUARD_TYPES_H
#define _INCLUDE_GUARD_TYPES_H
#include <glib.h>
#include "cpumask.h"
#define BALANCE_NONE 0
#define BALANCE_PACKAGE 1
#define BALANCE_CACHE 2
#define BALANCE_CORE 3
/*
* IRQ Classes
*/
#define IRQ_NODEF -1
#define IRQ_OTHER 0
#define IRQ_LEGACY 1
#define IRQ_SCSI 2
#define IRQ_VIDEO 3
#define IRQ_ETH 4
#define IRQ_GBETH 5
#define IRQ_10GBETH 6
#define IRQ_VIRT_EVENT 7
/*
* IRQ Types
*/
#define IRQ_TYPE_LEGACY 0
#define IRQ_TYPE_MSI 1
#define IRQ_TYPE_MSIX 2
#define IRQ_TYPE_VIRT_EVENT 3
/*
* IRQ Internal tracking flags
*/
#define IRQ_FLAG_BANNED (1ULL << 0)
#define IRQ_FLAG_AFFINITY_UNMANAGED (1ULL << 1)
enum obj_type_e {
OBJ_TYPE_CPU,
OBJ_TYPE_CACHE,
OBJ_TYPE_PACKAGE,
OBJ_TYPE_NODE
};
struct topo_obj {
uint64_t load;
uint64_t last_load;
uint64_t irq_count;
enum obj_type_e obj_type;
int number;
int powersave_mode;
cpumask_t mask;
GList *interrupts;
struct topo_obj *parent;
GList *children;
GList *numa_nodes;
GList **obj_type_list;
};
struct irq_info {
int irq;
int class;
int type;
int level;
int flags;
struct topo_obj *numa_node;
cpumask_t cpumask;
uint64_t irq_count;
uint64_t last_irq_count;
uint64_t load;
int moved;
int existing;
struct topo_obj *assigned_obj;
char *name;
};
#endif
07070100000028000041ED0000000000000000000000026569B9D300000000000000000000000000000000000000000000002300000000irqbalance-1.9.3.10.git+1a7d461/ui07070100000029000081A40000000000000000000000016569B9D300000DE2000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/ui/helpers.c
#include <glib.h>
#include <glib-unix.h>
#include <stdio.h>
#include <stdlib.h>
#include "helpers.h"
#include "ui.h"
gint sort_ints(gconstpointer First, gconstpointer Second)
{
int *first = (int *)First;
int *second = (int *)Second;
if(*first < *second) {
return -1;
}
if(*first == *second) {
return 0;
}
if(*first > *second) {
return 1;
}
return 1;
}
gint sort_all_cpus(gconstpointer First, gconstpointer Second)
{
cpu_ban_t *first, *second;
first = (cpu_ban_t *)First;
second = (cpu_ban_t *)Second;
if(first->number < second->number) {
return -1;
}
if(first->number == second->number) {
/* This should never happen */
return 0;
}
if(first->number > second->number) {
return 1;
}
return 1;
}
gint sort_all_irqs(gconstpointer First, gconstpointer Second)
{
irq_t *first, *second;
first = (irq_t *)First;
second = (irq_t *)Second;
if(first->vector < second->vector) {
return -1;
}
if(first->vector == second->vector) {
/* This should never happen */
return 0;
}
if(first->vector > second->vector) {
return 1;
}
return 1;
}
char * hex_to_bitmap(char hex_digit) {
uint8_t digit = 0;
if((hex_digit >= '0') && (hex_digit <= '9')) {
digit = hex_digit - '0';
} else if((hex_digit >= 'a') && (hex_digit <= 'f')) {
digit = hex_digit - 'a' + 10;
} else if((hex_digit >= 'A') && (hex_digit <= 'F')) {
digit = hex_digit - 'A' + 10;
} else {
return "0000\0";
}
char *bitmap = malloc(5 * sizeof(char));
bitmap[4] = '\0';
int i;
for(i = 3; i >= 0; i--) {
bitmap[i] = digit % 2 ? '1' : '0';
digit /= 2;
}
return bitmap;
}
gpointer copy_cpu_ban(gconstpointer src, gpointer data __attribute__((unused)))
{
cpu_ban_t *old = (cpu_ban_t *)src;
cpu_ban_t *new = malloc(sizeof(cpu_ban_t));
new->number = old->number;
new->is_banned = old->is_banned;
new->is_changed = 0;
return new;
}
gpointer copy_irq(gconstpointer src, gpointer data __attribute__((unused)))
{
irq_t *old = (irq_t *)src;
irq_t *new = malloc(sizeof(irq_t));
new->vector = old->vector;
new->load = old->load;
new->diff = old->diff;
new->is_banned = old->is_banned;
new->is_changed = 0;
new->class = old->class;
new->assigned_to = g_list_copy(old->assigned_to);
return new;
}
void for_each_cpu(GList *list, void (*fp)(cpu_ban_t *cpu, void *data), void *data)
{
GList *entry;
entry = g_list_first(list);
while(entry) {
fp(entry->data, data);
entry = g_list_next(entry);
}
}
void for_each_int(GList *list, void (*fp)(int *number, void *data), void *data)
{
GList *entry;
entry = g_list_first(list);
while(entry) {
fp(entry->data, data);
entry = g_list_next(entry);
}
}
void for_each_irq(GList *list, void (*fp)(irq_t *irq, void *data), void *data)
{
GList *entry;
entry = g_list_first(list);
while(entry) {
fp(entry->data, data);
entry = g_list_next(entry);
}
}
void for_each_node(GList *list, void (*fp)(cpu_node_t *node, void *data), void *data)
{
GList *entry;
entry = g_list_first(list);
while(entry) {
fp(entry->data, data);
entry = g_list_next(entry);
}
}
/* Programmer debugging functions */
void dump_irq(irq_t *irq, void *data __attribute__((unused)))
{
printf("IRQ %d\n", irq->vector);
}
void dump_node(cpu_node_t *node, void *data __attribute__((unused)))
{
printf("TYPE %d NUMBER %d\n", node->type, node->number);
if(g_list_length(node->irqs) > 0) {
for_each_irq(node->irqs, dump_irq, NULL);
}
if(g_list_length(node->children) > 0) {
for_each_node(node->children, dump_node, NULL);
}
}
void dump_tree()
{
for_each_node(tree, dump_node, NULL);
}
0707010000002A000081A40000000000000000000000016569B9D3000003E1000000000000000000000000000000000000002D00000000irqbalance-1.9.3.10.git+1a7d461/ui/helpers.h
#ifndef HELPERS_H
#define HELPERS_H
#include "irqbalance-ui.h"
extern GList *tree;
/* Helper functions */
gint sort_ints(gconstpointer First, gconstpointer Second);
gint sort_all_cpus(gconstpointer First, gconstpointer Second);
gint sort_all_irqs(gconstpointer First, gconstpointer Second);
char * hex_to_bitmap(char hex_digit);
gpointer copy_cpu_ban(gconstpointer src, gpointer data);
gpointer copy_irq(gconstpointer src, gpointer data);
void for_each_cpu(GList *list, void (*fp)(cpu_ban_t *cpu, void *data), void *data);
void for_each_int(GList *list, void (*fp)(int *number, void *data), void *data);
void for_each_irq(GList *list, void (*fp)(irq_t *irq, void *data), void *data);
void for_each_node(GList *list, void (*fp)(cpu_node_t *node, void *data), void *data);
/* Programmer debugging functions */
void dump_irq(irq_t *irq, void *data __attribute__((unused)));
void dump_node(cpu_node_t *node, void *data __attribute__((unused)));
void dump_tree();
#endif /* HELPERS_H */
0707010000002B000081A40000000000000000000000016569B9D30000327D000000000000000000000000000000000000003300000000irqbalance-1.9.3.10.git+1a7d461/ui/irqbalance-ui.c
#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <unistd.h>
#include <curses.h>
#include <ncurses.h>
#include "irqbalance-ui.h"
#include "ui.h"
#include "helpers.h"
enum states {
STATE_TREE,
STATE_SETTINGS,
STATE_SETUP_IRQS
};
int state;
int irqbalance_pid = -1;
GList *tree = NULL;
setup_t setup;
GMainLoop *main_loop;
static int default_bufsz = 8192;
struct msghdr * create_credentials_msg()
{
struct ucred *credentials = malloc(sizeof(struct ucred));
credentials->pid = getpid();
credentials->uid = geteuid();
credentials->gid = getegid();
struct msghdr *msg = malloc(sizeof(struct msghdr));
memset(msg, 0, sizeof(struct msghdr));
msg->msg_iovlen = 1;
msg->msg_control = malloc(CMSG_SPACE(sizeof(struct ucred)));
msg->msg_controllen = CMSG_SPACE(sizeof(struct ucred));
struct cmsghdr *cmsg = CMSG_FIRSTHDR(msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_CREDENTIALS;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
memcpy(CMSG_DATA(cmsg), credentials, sizeof(struct ucred));
free(credentials);
return msg;
}
int init_connection()
{
struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un));
int socket_fd = socket(AF_LOCAL, SOCK_STREAM, 0);
if(socket_fd < 0) {
perror("Error opening socket");
return 0;
}
addr.sun_family = AF_UNIX;
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s%d.sock", SOCKET_TMPFS,
SOCKET_PATH, irqbalance_pid);
if(connect(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
/* Try connect to abstract */
memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_UNIX;
if (connect(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
close(socket_fd);
return 0;
}
}
return socket_fd;
}
void send_settings(char *data)
{
/* Send "settings sleep X" to set sleep interval, "settings ban
* irqs X Y..." to ban IRQs from balancing,
* "settings cpus <banned_list>" to setup which CPUs are forbidden
* to handle IRQs
*/
int socket_fd = init_connection();
if(!socket_fd) {
return;
}
struct msghdr *msg = create_credentials_msg();
struct iovec iov;
iov.iov_base = (void *) data;
iov.iov_len = strlen(data);
msg->msg_iov = &iov;
sendmsg(socket_fd, msg, 0);
close(socket_fd);
free(msg->msg_control);
free(msg);
}
char * get_data(char *string)
{
/* Send "setup" to get sleep interval, banned IRQs and banned CPUs,
* "stats" to get CPU tree statistics
*/
int socket_fd;
try_again:
socket_fd = init_connection();
if(!socket_fd) {
return NULL;
}
struct msghdr *msg = create_credentials_msg();
struct iovec iov;
iov.iov_base = (void *) string;
iov.iov_len = strlen(string);
msg->msg_iov = &iov;
sendmsg(socket_fd, msg, 0);
char *data = malloc(default_bufsz);
int len = recv(socket_fd, data, default_bufsz, MSG_TRUNC);
close(socket_fd);
data[len] = '\0';
free(msg->msg_control);
free(msg);
if (len >= default_bufsz) {
/* msg was truncated, increase bufsz and try again */
default_bufsz += 8192;
free(data);
goto try_again;
}
return data;
}
void parse_setup(char *setup_data)
{
char *token, *ptr;
int i,j, cpu = 0;
char *copy;
irq_t *new_irq = NULL;
if((setup_data == NULL) || (strlen(setup_data) == 0)) return;
copy = strdup(setup_data);
if (!copy)
return;
setup.banned_irqs = NULL;
setup.banned_cpus = NULL;
token = strtok_r(copy, " ", &ptr);
if(strncmp(token, "SLEEP", strlen("SLEEP"))) goto out;
setup.sleep = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
/* Parse banned IRQ data */
while(!strncmp(token, "IRQ", strlen("IRQ"))) {
new_irq = malloc(sizeof(irq_t));
new_irq->vector = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "LOAD", strlen("LOAD"))) goto out;
new_irq->load = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "DIFF", strlen("DIFF"))) goto out;
new_irq->diff = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(ptr, " ", &ptr);
if(strncmp(token, "CLASS", strlen("CLASS"))) goto out;
new_irq->class = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
new_irq->is_banned = 1;
new_irq->assigned_to = NULL;
setup.banned_irqs = g_list_append(setup.banned_irqs, new_irq);
token = strtok_r(NULL, " ", &ptr);
new_irq = NULL;
}
if(strncmp(token, "BANNED", strlen("BANNED"))) goto out;
token = strtok_r(NULL, " ", &ptr);
for(i = strlen(token) - 1; i >= 0; i--) {
if (token[i] == ',')
continue;
char *map = hex_to_bitmap(token[i]);
for(j = 3; j >= 0; j--) {
if(map[j] == '1') {
uint64_t *banned_cpu = malloc(sizeof(uint64_t));
*banned_cpu = cpu;
setup.banned_cpus = g_list_append(setup.banned_cpus,
banned_cpu);
}
cpu++;
}
free(map);
}
free(copy);
return;
out: {
/* Invalid data presented */
printf("Invalid data sent. Unexpected token: %s", token);
if (new_irq) {
free(new_irq);
}
free(copy);
g_list_free(tree);
exit(1);
}
}
GList * concat_child_lists(cpu_node_t *node)
{
GList *new = NULL;
GList *child_entry = g_list_first(node->children);
do {
cpu_node_t *child = (cpu_node_t *)child_entry->data;
GList *cpu_entry = g_list_first(child->cpu_list);
do {
uint64_t *cpu = (uint64_t *)cpu_entry->data;
new = g_list_append(new, cpu);
cpu_entry = g_list_next(cpu_entry);
} while(cpu_entry != NULL);
child_entry = g_list_next(child_entry);
} while(child_entry != NULL);
return new;
}
void copy_cpu_list_to_irq(irq_t *irq, void *data)
{
irq->assigned_to = g_list_copy((GList *)data);
irq->assigned_to = g_list_sort(irq->assigned_to, sort_ints);
}
void assign_cpu_lists(cpu_node_t *node, void *data __attribute__((unused)))
{
if(g_list_length(node->children) > 0) {
for_each_node(node->children, assign_cpu_lists, NULL);
node->cpu_list = concat_child_lists(node);
} else {
node->cpu_list = g_list_append(node->cpu_list, &(node->number));
}
for_each_irq(node->irqs, copy_cpu_list_to_irq, node->cpu_list);
}
void assign_cpu_mask(cpu_node_t *node, void *data __attribute__((unused)))
{
char *mask = malloc(16 * sizeof(char));
mask[0] = '\0';
unsigned int sum = 0;
GList *list_entry = g_list_first(node->cpu_list);
do {
int *cpu = list_entry->data;
sum += 1 << (*cpu);
list_entry = g_list_next(list_entry);
} while(list_entry != NULL);
snprintf(mask, 15, "0x%x", sum);
node->cpu_mask = mask;
if(g_list_length(node->children) > 0) {
for_each_node(node->children, assign_cpu_mask, NULL);
}
}
void parse_into_tree(char *data)
{
char *token, *ptr;
cpu_node_t *parent = NULL;
char *copy;
tree = NULL;
irq_t *new_irq = NULL;
cpu_node_t *new = NULL;
if (!data || strlen(data) == 0)
return;
copy = strdup(data);
if (!copy)
return;
token = strtok_r(copy, " ", &ptr);
while(token != NULL) {
/* Parse node data */
if(strncmp(token, "TYPE", strlen("TYPE"))) {
free(copy);
goto out;
}
new = malloc(sizeof(cpu_node_t));
new->irqs = NULL;
new->children = NULL;
new->cpu_list = NULL;
new->cpu_mask = NULL;
new->type = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
if(new->type == OBJ_TYPE_NODE) {
parent = NULL;
} else if(new->type >= parent->type) {
parent = parent->parent;
}
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "NUMBER", strlen("NUMBER"))) goto out;
new->number = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "LOAD", strlen("LOAD"))) goto out;
new->load = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "SAVE_MODE", strlen("SAVE_MODE"))) goto out;
new->is_powersave = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
/* Parse assigned IRQ data */
while((token != NULL) && (!strncmp(token, "IRQ", strlen("IRQ")))) {
new_irq = malloc(sizeof(irq_t));
new_irq->vector = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "LOAD", strlen("LOAD"))) goto out;
new_irq->load = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "DIFF", strlen("DIFF"))) goto out;
new_irq->diff = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
token = strtok_r(NULL, " ", &ptr);
if(strncmp(token, "CLASS", strlen("CLASS"))) goto out;
new_irq->class = strtol(strtok_r(NULL, " ", &ptr), NULL, 10);
new_irq->is_banned = 0;
new->irqs = g_list_append(new->irqs, new_irq);
token = strtok_r(NULL, " ", &ptr);
new_irq = NULL;
}
if((token == NULL) || (strncmp(token, "IRQ", strlen("IRQ")))) {
new->parent = parent;
if(parent == NULL) {
tree = g_list_append(tree, new);
} else {
parent->children = g_list_append(parent->children, new);
}
if(new->type != OBJ_TYPE_CPU) {
parent = new;
}
}
new = NULL;
}
free(copy);
for_each_node(tree, assign_cpu_lists, NULL);
for_each_node(tree, assign_cpu_mask, NULL);
return;
out: {
/* Invalid data presented */
printf("Invalid data sent. Unexpected token: %s\n", token);
if (new_irq) {
free(new_irq);
}
if (new) {
free(new);
}
g_list_free(tree);
exit(1);
}
}
gboolean rescan_tree(gpointer data __attribute__((unused)))
{
char *setup_data = get_data(SETUP);
parse_setup(setup_data);
char *irqbalance_data = get_data(STATS);
parse_into_tree(irqbalance_data);
if(state == STATE_TREE) {
display_tree();
}
free(setup_data);
free(irqbalance_data);
return TRUE;
}
void scroll_window() {
switch(state) {
case STATE_TREE:
display_tree();
break;
case STATE_SETTINGS:
settings();
break;
case STATE_SETUP_IRQS:
setup_irqs();
break;
default:
break;
}
}
gboolean key_loop(gpointer data __attribute__((unused)))
{
while(1) {
int c = getch();
switch(c) {
case 'q':
close_window(0);
break;
case KEY_UP:
if (offset > 0) {
offset--;
scroll_window();
}
break;
case KEY_DOWN:
if (offset < max_offset) {
offset++;
scroll_window();
}
break;
case KEY_NPAGE:
switch (state) {
case STATE_TREE:
offset += LINES - 5;
break;
case STATE_SETTINGS:
offset += LINES - 8;
break;
case STATE_SETUP_IRQS:
offset += LINES - 6;
break;
default:
break;
}
if (offset > max_offset)
offset = max_offset;
scroll_window();
break;
case KEY_PPAGE:
switch (state) {
case STATE_TREE:
offset -= LINES - 5;
break;
case STATE_SETTINGS:
offset -= LINES - 8;
break;
case STATE_SETUP_IRQS:
offset -= LINES - 6;
break;
default:
break;
}
if (offset < 0)
offset = 0;
scroll_window();
break;
case KEY_F(3):
if (state == STATE_SETTINGS || state == STATE_SETUP_IRQS) {
state = STATE_TREE;
offset = 0;
display_tree();
}
break;
case KEY_F(4):
if (state == STATE_TREE || state == STATE_SETUP_IRQS) {
state = STATE_SETTINGS;
offset = 0;
settings();
}
settings();
break;
case KEY_F(5):
if (state == STATE_TREE || state == STATE_SETTINGS) {
state = STATE_SETUP_IRQS;
offset = 0;
setup_irqs();
}
break;
case 'c':
if (state == STATE_SETTINGS)
handle_cpu_banning();
break;
case 'i':
if (state == STATE_SETUP_IRQS)
handle_irq_banning();
break;
case 's':
if (state == STATE_SETTINGS)
handle_sleep_setting();
break;
default:
break;
}
}
return TRUE;
}
int main(int argc, char **argv)
{
if(getuid() != 0) {
printf("This program needs to be executed with root privileges\n");
return EACCES;
}
if(argc > 1) {
/* PID of irqbalance specified */
irqbalance_pid = strtol(argv[1], NULL, 10);
if(!irqbalance_pid) {
printf("PID must be a number\n");
return EINVAL;
}
} else {
/* We need to find irqbalance's PID */
DIR *dir = opendir("/proc");
if(dir) {
struct dirent *entry;
char cmdfile[512];
char cmdstring[256];
cmdstring[255] = '\0';
do {
entry = readdir(dir);
if(entry) {
snprintf(cmdfile, 512, "/proc/%s/cmdline", entry->d_name);
FILE *f = fopen(cmdfile, "r");
if(f == NULL) {
continue;
}
fgets(cmdstring, 255, f);
if((strstr(cmdstring, "irqbalance") != NULL) &&
(strstr(cmdstring, "irqbalance-ui") == NULL)) {
irqbalance_pid = strtol(entry->d_name, NULL, 10);
}
fclose(f);
}
} while((entry) && (irqbalance_pid == -1));
closedir(dir);
}
if(irqbalance_pid == -1) {
printf("Unable to determine irqbalance PID\n");
return EINVAL;
}
}
state = STATE_TREE;
init();
main_loop = g_main_loop_new(NULL, FALSE);
g_timeout_add_seconds(5, rescan_tree, NULL);
g_timeout_add_seconds(1, key_loop, NULL);
g_main_loop_run(main_loop);
g_main_loop_quit(main_loop);
close_window(0);
return 0;
}
0707010000002C000081A40000000000000000000000016569B9D3000006DF000000000000000000000000000000000000003300000000irqbalance-1.9.3.10.git+1a7d461/ui/irqbalance-ui.h
#ifndef IRQBALANCE_UI_H
#define IRQBALANCE_UI_H
#include <stdio.h>
#include <stdint.h>
#include <glib.h>
#include <glib-unix.h>
#define SOCKET_PATH "irqbalance"
#define SOCKET_TMPFS "/run/irqbalance"
#define STATS "stats"
#define SET_SLEEP "settings sleep "
#define BAN_IRQS "settings ban irqs "
#define SETUP "setup"
/* IRQ CLASSES (same as irqbalance uses) */
#define IRQ_NODEF -1
#define IRQ_OTHER 0
#define IRQ_LEGACY 1
#define IRQ_SCSI 2
#define IRQ_VIDEO 3
#define IRQ_ETH 4
#define IRQ_GBETH 5
#define IRQ_10GBETH 6
#define IRQ_VIRT_EVENT 7
/* Typedefs */
typedef enum node_type {
OBJ_TYPE_CPU,
OBJ_TYPE_CACHE,
OBJ_TYPE_PACKAGE,
OBJ_TYPE_NODE
} node_type_e;
typedef struct irq {
int vector;
uint64_t load;
uint64_t diff;
char is_banned;
char is_changed;
GList *assigned_to;
int class;
} irq_t;
typedef struct cpu_node {
node_type_e type;
int number;
uint64_t load;
int is_powersave;
struct cpu_node *parent;
GList *children;
GList *irqs;
GList *cpu_list;
char *cpu_mask;
} cpu_node_t;
typedef struct cpu_ban {
int number;
char is_banned;
char is_changed;
} cpu_ban_t;
typedef struct setup {
uint64_t sleep;
GList *banned_irqs;
GList *banned_cpus;
} setup_t;
/* Function prototypes */
struct msghdr * create_credentials_msg();
int init_connection();
void send_settings(char *data);
char * get_data(char *string);
void parse_setup(char *setup_data);
GList * concat_child_lists(cpu_node_t *node);
void copy_cpu_list_to_irq(irq_t *irq, void *data);
void assign_cpu_lists(cpu_node_t *node, void *data);
void assign_cpu_mask(cpu_node_t *node, void *data);
void parse_into_tree(char *data);
gboolean rescan_tree(gpointer data);
int main();
#endif /* IRQBALANCE_UI_H */
0707010000002D000081A40000000000000000000000016569B9D300004F65000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/ui/ui.c
#include <inttypes.h>
#include <string.h>
#include "ui.h"
int offset;
int max_offset;
GList *all_cpus = NULL;
GList *all_irqs = NULL;
static char **irq_name;
char *IRQ_CLASS_TO_STR[] = {
"Other",
"Legacy",
"SCSI",
"Video",
"Ethernet",
"Gigabit Ethernet",
"10-Gigabit Ethernet",
"Virt Event"};
void show_frame()
{
int i;
attrset(COLOR_PAIR(4));
char top[COLS];
top[0] = '\0';
while(strlen(top) != (size_t)COLS - 1) {
snprintf(top + strlen(top), COLS - strlen(top), " ");
}
mvprintw(0, 0, "%s", top);
for(i = 0; i < LINES; i++) {
mvprintw(i, 0, " ");
mvprintw(i, COLS - 1, " ");
}
}
void show_footer()
{
char footer[COLS];
snprintf(footer, COLS - 1,
" q (QUIT) F3 (TREE) F4 (SETTINGS) F5 (SETUP IRQS)");
while(strlen(footer) != (size_t)COLS - 1) {
snprintf(footer + strlen(footer), COLS - strlen(footer), " ");
}
attrset(COLOR_PAIR(4) | A_BOLD);
mvprintw(LINES - 1, 0, "%s", footer);
}
char * check_control_in_sleep_input(int max_len, int column_offest, int line_offset)
{
char *input_to = malloc(max_len * sizeof(char));
int iteration = 0;
while(iteration < max_len) {
int new = getch();
switch(new) {
case ERR:
/* No input is ready for nonblocking getch() call */
break;
case '\r':
case '\n':
input_to[iteration] = '\0';
return input_to;
case 'q':
close_window(0);
break;
case KEY_BACKSPACE:
if(iteration > 0) {
attrset(COLOR_PAIR(5));
iteration--;
mvaddch(line_offset, column_offest + iteration, ' ');
}
move(line_offset, column_offest + iteration);
attrset(COLOR_PAIR(5) | A_REVERSE | A_BOLD);
break;
case 27:
free(input_to);
return NULL;
default:
input_to[iteration] = new;
iteration++;
break;
}
}
return input_to;
}
int get_valid_sleep_input(int column_offest)
{
uint64_t new_sleep = setup.sleep;
while(1) {
attrset(COLOR_PAIR(5));
mvprintw(2, column_offest, " ");
attrset(COLOR_PAIR(5) | A_REVERSE | A_BOLD);
refresh();
move(2, column_offest);
curs_set(1);
char *input = check_control_in_sleep_input(20, column_offest, 3);
if(input == NULL) {
curs_set(0);
attrset(COLOR_PAIR(1));
mvprintw(2, column_offest, "%lu ", new_sleep);
move(LINES, COLS);
break;
}
attrset(COLOR_PAIR(1));
mvprintw(LINES - 2, 1, " ");
curs_set(0);
refresh();
char *error;
new_sleep = strtol(input, &error, 10);
if((*error == '\0') && (new_sleep >= 1)) {
break;
} else {
new_sleep = setup.sleep;
attrset(COLOR_PAIR(4) | A_BOLD);
mvprintw(LINES - 2, 1,
"Invalid input: %s ",
input);
refresh();
}
free(input);
}
attrset(COLOR_PAIR(1));
mvprintw(2, column_offest, "%lu ", new_sleep);
return new_sleep;
}
void get_banned_cpu(int *cpu, void *data __attribute__((unused)))
{
cpu_ban_t *new = malloc(sizeof(cpu_ban_t));
new->number = *cpu;
new->is_banned = 1;
all_cpus = g_list_append(all_cpus, new);
}
void print_tmp_cpu_line(cpu_ban_t *cpu, void *data __attribute__((unused)))
{
int line = max_offset - offset + 6;
if (max_offset >= offset && line < LINES - 3) {
if (cpu->is_changed)
attrset(COLOR_PAIR(3));
else if(cpu->is_banned)
attrset(COLOR_PAIR(10));
else
attrset(COLOR_PAIR(9));
mvprintw(line, 3, "CPU %d ", cpu->number);
mvprintw(line, 19, "%s", cpu->is_banned ?
"YES " :
"NO ");
}
max_offset++;
}
void print_cpu_line(cpu_ban_t *cpu, void *data __attribute__((unused)))
{
int line = max_offset - offset + 6;
if (max_offset >= offset && line < LINES - 2) {
if(cpu->is_banned)
attrset(COLOR_PAIR(10));
else
attrset(COLOR_PAIR(9));
mvprintw(line, 3, "CPU %d ", cpu->number);
mvprintw(line, 19, "%s", cpu->is_banned ?
"YES " :
"NO ");
}
max_offset++;
}
void print_all_cpus()
{
max_offset = 0;
if(all_cpus == NULL) {
for_each_node(tree, get_cpu, NULL);
for_each_int(setup.banned_cpus, get_banned_cpu, NULL);
all_cpus = g_list_sort(all_cpus, sort_all_cpus);
}
attrset(COLOR_PAIR(2));
mvprintw(4, 3, "NUMBER IS BANNED");
for_each_cpu(all_cpus, print_cpu_line, NULL);
max_offset -= LINES - 8;
if (max_offset < 0)
max_offset = 0;
}
void add_banned_cpu(int *banned_cpu, void *data)
{
snprintf(data + strlen(data), 1024 - strlen(data), "%d, ", *banned_cpu);
}
void display_banned_cpus()
{
char banned_cpus[1024] = "Banned CPU numbers: \0";
if(g_list_length(setup.banned_cpus) > 0) {
for_each_int(setup.banned_cpus, add_banned_cpu, banned_cpus);
snprintf(banned_cpus + strlen(banned_cpus) - 2,
1024 - strlen(banned_cpus), "\n");
} else {
snprintf(banned_cpus + strlen(banned_cpus),
1024 - strlen(banned_cpus), "None\n");
}
attrset(COLOR_PAIR(0));
mvprintw(2, 5, "%s\n", banned_cpus);
}
int toggle_cpu(GList *cpu_list, int cpu_number)
{
GList *entry = g_list_first(cpu_list);
cpu_ban_t *entry_data = (cpu_ban_t *)(entry->data);
while(entry_data->number != cpu_number) {
entry = g_list_next(entry);
entry_data = (cpu_ban_t *)(entry->data);
}
if(((cpu_ban_t *)(entry->data))->is_banned) {
((cpu_ban_t *)(entry->data))->is_banned = 0;
} else {
((cpu_ban_t *)(entry->data))->is_banned = 1;
}
((cpu_ban_t *)(entry->data))->is_changed = 1;
return ((cpu_ban_t *)(entry->data))->is_banned;
}
void get_new_cpu_ban_values(cpu_ban_t *cpu, void *data)
{
char *mask_data = (char *)data;
if(cpu->is_banned) {
snprintf(mask_data + strlen(mask_data), 1024 - strlen(mask_data),
"%d,", cpu->number);
}
}
void get_cpu(cpu_node_t *node, void *data __attribute__((unused)))
{
if(node->type == OBJ_TYPE_CPU) {
cpu_ban_t *new = malloc(sizeof(cpu_ban_t));
new->number = node->number;
new->is_banned = 0;
all_cpus = g_list_append(all_cpus, new);
}
if(g_list_length(node->children) > 0) {
for_each_node(node->children, get_cpu, NULL);
}
}
void handle_cpu_banning()
{
GList *tmp = g_list_copy_deep(all_cpus, copy_cpu_ban, NULL);
attrset(COLOR_PAIR(5));
mvprintw(LINES - 3, 1, "Move up and down the list, toggle ban with Enter.");
mvprintw(LINES - 2, 1,
"Press ESC for discarding and <S> for saving the values.");
move(6, 19);
curs_set(1);
refresh();
size_t position = 6;
char processing = 1;
while(processing) {
int direction = getch();
switch(direction) {
case KEY_UP:
if(position > 6) {
position--;
move(position, 19);
} else if (offset > 0) {
offset--;
max_offset = 0;
for_each_cpu(tmp, print_tmp_cpu_line, NULL);
max_offset -= LINES - 9;
if (max_offset < 0)
max_offset = 0;
move(position, 19);
}
break;
case KEY_DOWN:
if(position < (size_t)(LINES - 4)) {
if (position <= g_list_length(all_cpus) + 4 - offset) {
position++;
move(position, 19);
}
} else if (offset < max_offset) {
offset++;
max_offset = 0;
for_each_cpu(tmp, print_tmp_cpu_line, NULL);
max_offset -= LINES - 9;
if (max_offset < 0)
max_offset = 0;
move(position, 19);
}
break;
case '\n':
case '\r': {
attrset(COLOR_PAIR(3));
int banned = toggle_cpu(tmp, position + offset - 6);
mvprintw(position, 3, "CPU %d ", position + offset - 6);
if(banned) {
mvprintw(position, 19, "YES");
} else {
mvprintw(position, 19, "NO ");
}
move(position, 19);
refresh();
break;
}
case 27:
processing = 0;
curs_set(0);
g_list_free(tmp);
print_all_cpus();
attrset(COLOR_PAIR(0));
mvprintw(LINES - 3, 1, " \
");
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1,
"Press <S> for changing sleep setup, <C> for CPU ban setup. ");
show_frame();
show_footer();
refresh();
break;
case 's':
processing = 0;
g_list_free(all_cpus);
all_cpus = tmp;
curs_set(0);
print_all_cpus();
attrset(COLOR_PAIR(0));
mvprintw(LINES - 3, 1, " \
");
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1,
"Press <S> for changing sleep setup, <C> for CPU ban setup. ");
show_frame();
show_footer();
refresh();
char settings_string[1024] = "settings cpus \0";
for_each_cpu(all_cpus, get_new_cpu_ban_values, settings_string);
if(!strcmp("settings cpus \0", settings_string)) {
strncpy(settings_string + strlen(settings_string),
"NULL", 1024 - strlen(settings_string));
}
send_settings(settings_string);
break;
case 'q':
processing = 0;
close_window(0);
break;
default:
break;
}
}
}
static int rbot, rtop;
static inline void bsnl_emit(char *buf, int buflen)
{
int len = strlen(buf);
if (len > 0) {
snprintf(buf + len, buflen - len, ",");
len++;
}
if (rbot == rtop)
snprintf(buf + len, buflen - len, "%d", rbot);
else
snprintf(buf + len, buflen - len, "%d-%d", rbot, rtop);
}
void copy_assigned_obj(int *number, void *data)
{
if (rtop == -1) {
rbot = rtop = *number;
return;
}
if (*number > rtop + 1) {
bsnl_emit(data, 128);
rbot = *number;
}
rtop = *number;
}
void print_assigned_objects_string(irq_t *irq, int *line_offset)
{
if(irq->is_banned) {
return;
}
char assigned_to[128] = "\0";
rtop = -1;
for_each_int(irq->assigned_to, copy_assigned_obj, assigned_to);
bsnl_emit(assigned_to, 128);
mvprintw(*line_offset, 68, "%s ", assigned_to);
}
void get_irq_name(int end)
{
int i, cpunr, len;
FILE *output;
char *cmd;
char buffer[128];
if (irq_name == NULL) {
irq_name = malloc(sizeof(char *) * LINES);
for (i = 4; i < LINES; i++) {
irq_name[i] = malloc(sizeof(char) * 50);
memset(irq_name[i], 0, sizeof(char) * 50);
}
}
output = popen("cat /proc/interrupts | head -1 | awk '{print NF}'", "r");
if (!output)
return;
fscanf(output, "%d", &cpunr);
pclose(output);
len = snprintf(NULL, 0, "cat /proc/interrupts | awk '{for (i=%d;i<=NF;i++)printf(\"%%s \", $i);print \"\"}' | cut -c-49", cpunr + 2);
cmd = alloca(sizeof(char) * (len + 1));
snprintf(cmd, len + 1, "cat /proc/interrupts | awk '{for (i=%d;i<=NF;i++)printf(\"%%s \", $i);print \"\"}' | cut -c-49", cpunr + 2);
output = popen(cmd, "r");
for (i = 0; i <= offset; i++)
fgets(buffer, 50, output);
for (i = 4; i < end; i++)
fgets(irq_name[i], 50, output);
pclose(output);
}
void print_tmp_irq_line(irq_t *irq, void *data __attribute__((unused)))
{
int line = max_offset - offset + 4;
max_offset++;
if (line < 4 || line >= LINES - 3)
return;
switch(irq->class) {
case(IRQ_OTHER):
attrset(COLOR_PAIR(1));
break;
case(IRQ_LEGACY):
attrset(COLOR_PAIR(2));
break;
case(IRQ_SCSI):
attrset(COLOR_PAIR(3));
break;
case(IRQ_VIDEO):
attrset(COLOR_PAIR(8));
break;
case(IRQ_ETH):
case(IRQ_GBETH):
case(IRQ_10GBETH):
attrset(COLOR_PAIR(9));
break;
case(IRQ_VIRT_EVENT):
attrset(COLOR_PAIR(10));
break;
default:
attrset(COLOR_PAIR(0));
break;
}
mvprintw(line, 3, "IRQ %d ", irq->vector);
mvprintw(line, 19, "%s", irq->is_banned ? "YES" : "NO ");
mvprintw(line, 36, "%s ",
irq->class < 0 ? "Unknown" : IRQ_CLASS_TO_STR[irq->class]);
print_assigned_objects_string(irq, &line);
mvprintw(line, 120, "%s", irq_name[line]);
}
void print_irq_line(irq_t *irq, void *data __attribute__((unused)))
{
int line = max_offset - offset + 4;
max_offset++;
if (line < 4 || line >= LINES - 2)
return;
switch(irq->class) {
case(IRQ_OTHER):
attrset(COLOR_PAIR(1));
break;
case(IRQ_LEGACY):
attrset(COLOR_PAIR(2));
break;
case(IRQ_SCSI):
attrset(COLOR_PAIR(3));
break;
case(IRQ_VIDEO):
attrset(COLOR_PAIR(8));
break;
case(IRQ_ETH):
case(IRQ_GBETH):
case(IRQ_10GBETH):
attrset(COLOR_PAIR(9));
break;
case(IRQ_VIRT_EVENT):
attrset(COLOR_PAIR(10));
break;
default:
attrset(COLOR_PAIR(0));
break;
}
mvprintw(line, 3, "IRQ %d", irq->vector);
mvprintw(line, 19, "%s", irq->is_banned ? "YES" : "NO ");
mvprintw(line, 36, "%s ",
irq->class < 0 ? "Unknown" : IRQ_CLASS_TO_STR[irq->class]);
print_assigned_objects_string(irq, &line);
mvprintw(line, 120, "%s", irq_name[line]);
}
void print_all_irqs()
{
max_offset = 0;
attrset(COLOR_PAIR(0));
mvprintw(2, 3,
"NUMBER IS BANNED CLASS \
ASSIGNED TO CPUS IRQ NAME");
get_irq_name(LINES - 2);
for_each_irq(all_irqs, print_irq_line, NULL);
max_offset -= LINES - 6;
if (max_offset < 0)
max_offset = 0;
}
int toggle_irq(GList *irq_list, int position)
{
GList *entry = g_list_first(irq_list);
int irq_node = 0;
while(irq_node != position) {
entry = g_list_next(entry);
irq_node++;
}
if(((irq_t *)(entry->data))->is_banned) {
((irq_t *)(entry->data))->is_banned = 0;
} else {
((irq_t *)(entry->data))->is_banned = 1;
}
((irq_t *)(entry->data))->is_changed = 1;
return ((irq_t *)(entry->data))->is_banned;
}
void get_new_irq_ban_values(irq_t *irq, void *data)
{
char *ban_list = (char *)data;
if(irq->is_banned) {
snprintf(ban_list + strlen(ban_list), 1024 - strlen(ban_list),
" %d", irq->vector);
}
}
void copy_irqs_from_nodes(cpu_node_t *node, void *data __attribute__((unused)))
{
if(g_list_length(node->irqs) > 0) {
GList *new = g_list_copy_deep(node->irqs, copy_irq, NULL);
all_irqs = g_list_concat(all_irqs, new);
}
if(g_list_length(node->children) > 0) {
for_each_node(node->children, copy_irqs_from_nodes, all_irqs);
}
}
void get_all_irqs()
{
all_irqs = g_list_copy_deep(setup.banned_irqs, copy_irq, NULL);
for_each_node(tree, copy_irqs_from_nodes, NULL);
}
void handle_irq_banning()
{
GList *tmp = g_list_copy_deep(all_irqs, copy_irq, NULL);
attrset(COLOR_PAIR(5));
mvprintw(LINES - 3, 1, "Move up and down the list, toggle ban with Enter.");
mvprintw(LINES - 2, 1, "Press ESC for discarding and <S> for saving the values.");
move(4, 19);
curs_set(1);
refresh();
size_t position = 4;
char processing = 1;
while(processing) {
int direction = getch();
switch(direction) {
case KEY_UP:
if(position > 4) {
position--;
move(position, 19);
} else if (offset > 0) {
offset--;
max_offset = 0;
get_irq_name(LINES - 3);
for_each_irq(tmp, print_tmp_irq_line, NULL);
max_offset -= LINES - 7;
if (max_offset < 0)
max_offset = 0;
move(position, 19);
}
break;
case KEY_DOWN:
if (position < (size_t)(LINES - 4)) {
if(position < g_list_length(all_irqs) + 3) {
position++;
move(position, 19);
}
} else if (offset < max_offset) {
offset++;
max_offset = 0;
get_irq_name(LINES - 3);
for_each_irq(tmp, print_tmp_irq_line, NULL);
max_offset -= LINES - 7;
if (max_offset < 0)
max_offset = 0;
move(position, 19);
}
break;
case '\n':
case '\r': {
attrset(COLOR_PAIR(3));
int banned = toggle_irq(tmp, position + offset - 4);
if(banned) {
mvprintw(position, 19, "YES");
} else {
mvprintw(position, 19, "NO ");
}
move(position, 19);
refresh();
break;
}
case 27:
processing = 0;
curs_set(0);
/* Forget the changes */
g_list_free(tmp);
print_all_irqs();
attrset(COLOR_PAIR(0));
mvprintw(LINES - 3, 1, " \
");
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1, "Press <I> for setting up IRQ banning.\
");
show_frame();
show_footer();
refresh();
break;
case 's':
processing = 0;
g_list_free(all_irqs);
all_irqs = tmp;
curs_set(0);
print_all_irqs();
attrset(COLOR_PAIR(0));
mvprintw(LINES - 3, 1, " \
");
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1, "Press <I> for setting up IRQ banning.\
");
attrset(COLOR_PAIR(3));
show_frame();
show_footer();
refresh();
char settings_string[1024] = BAN_IRQS;
for_each_irq(all_irqs, get_new_irq_ban_values, settings_string);
if(!strcmp(BAN_IRQS, settings_string)) {
strncpy(settings_string + strlen(settings_string),
" NONE", 1024 - strlen(settings_string));
}
send_settings(settings_string);
break;
case 'q':
processing = 0;
close_window(0);
break;
default:
break;
}
}
}
void handle_sleep_setting()
{
char info[128] = "Current sleep interval between rebalancing: \0";
uint8_t sleep_input_offset = strlen(info) + 3;
mvprintw(LINES - 1, 1, "Press ESC for discarding your input.\
");
attrset(COLOR_PAIR(0));
mvprintw(LINES - 2, 1, " \
");
uint64_t new_sleep = get_valid_sleep_input(sleep_input_offset);
if(new_sleep != setup.sleep) {
setup.sleep = new_sleep;
char settings_data[128];
snprintf(settings_data, 128, "%s %" PRIu64, SET_SLEEP, new_sleep);
send_settings(settings_data);
}
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1, "Press <S> for changing sleep setup, <C> for CPU ban setup. ");
show_frame();
show_footer();
refresh();
}
void init()
{
signal(SIGINT, close_window);
initscr();
keypad(stdscr, TRUE);
curs_set(0);
nonl();
cbreak();
nodelay(stdscr, TRUE);
echo();
if(has_colors()) {
start_color();
use_default_colors();
init_pair(1, COLOR_RED, -1);
init_pair(2, COLOR_YELLOW, -1);
init_pair(3, COLOR_GREEN, -1);
init_pair(4, COLOR_WHITE, COLOR_BLUE);
init_pair(5, -1, COLOR_RED);
/* Pair 6 is unused */
/* Pair 7 is unused */
init_pair(8, COLOR_BLUE, -1);
init_pair(9, COLOR_CYAN, -1);
init_pair(10, COLOR_MAGENTA, -1);
}
offset = 0;
display_tree();
}
void close_window(int sig __attribute__((unused)))
{
g_list_free(all_cpus);
g_list_free(setup.banned_irqs);
g_list_free(setup.banned_cpus);
g_list_free_full(tree, free);
endwin();
exit(EXIT_SUCCESS);
}
void settings()
{
clear();
char *setup_data = get_data(SETUP);
parse_setup(setup_data);
char info[128] = "Current sleep interval between rebalancing: \0";
snprintf(info + strlen(info), 128 - strlen(info), "%" PRIu64 "\n", setup.sleep);
attrset(COLOR_PAIR(1));
mvprintw(2, 3, "%s", info);
print_all_cpus();
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1, "Press <S> for changing sleep setup, <C> for CPU ban setup. ");
show_frame();
show_footer();
refresh();
free(setup_data);
}
void setup_irqs()
{
clear();
get_all_irqs();
all_irqs = g_list_sort(all_irqs, sort_all_irqs);
print_all_irqs();
attrset(COLOR_PAIR(5));
mvprintw(LINES - 2, 1, "Press <I> for setting up IRQ banning.");
show_frame();
show_footer();
refresh();
}
void display_tree_node_irqs(irq_t *irq, void *data)
{
char indent[32] = " \0";
if (max_offset >= offset && max_offset - offset < LINES - 5) {
snprintf(indent + strlen(indent), 32 - strlen(indent), "%s", (char *)data);
attrset(COLOR_PAIR(3));
printw("%sIRQ %u, IRQs since last rebalance %lu\n",
indent, irq->vector, irq->diff);
}
max_offset++;
}
void display_tree_node(cpu_node_t *node, void *data)
{
int i;
const char *node_type_to_str[] = {
"CPU\0",
"CACHE DOMAIN\0",
"CPU PACKAGE\0",
"NUMA NODE\0"};
char *spaces = " \0";
char indent[32] = "\0";
char *asciitree = " `--\0";
for(i = node->type; i <= OBJ_TYPE_NODE; i++) {
snprintf(indent + strlen(indent), 32 - strlen(indent), "%s", spaces);
if(i != OBJ_TYPE_NODE) {
snprintf(indent + strlen(indent), 32 - strlen(indent), " ");
}
}
snprintf(indent + strlen(indent), 32 - strlen(indent), "%s", asciitree);
char copy_to[1024];
char *numa_available = "\0";
if((node->type == OBJ_TYPE_NODE) && (node->number == -1)) {
numa_available = " (This machine is not NUMA-capable)";
}
snprintf(copy_to, 1024, "%s%s, number %d%s, CPU mask %s\n",
indent, node_type_to_str[node->type], node->number, numa_available,
node->cpu_mask);
switch(node->type) {
case(OBJ_TYPE_CPU):
attrset(COLOR_PAIR(1));
break;
case(OBJ_TYPE_CACHE):
attrset(COLOR_PAIR(2));
break;
case(OBJ_TYPE_PACKAGE):
attrset(COLOR_PAIR(8));
break;
case(OBJ_TYPE_NODE):
attrset(COLOR_PAIR(9));
break;
default:
break;
}
if (max_offset >= offset)
printw("%s", copy_to);
max_offset++;
if(g_list_length(node->irqs) > 0) {
for_each_irq(node->irqs, display_tree_node_irqs, indent);
}
if(g_list_length(node->children)) {
for_each_node(node->children, display_tree_node, data);
}
}
void display_tree()
{
clear();
char *setup_data = get_data(SETUP);
parse_setup(setup_data);
char *irqbalance_data = get_data(STATS);
parse_into_tree(irqbalance_data);
display_banned_cpus();
max_offset = 0;
for_each_node(tree, display_tree_node, NULL);
max_offset -= LINES - 5;
if (max_offset < 0)
max_offset = 0;
show_frame();
show_footer();
refresh();
free(setup_data);
free(irqbalance_data);
}
0707010000002E000081A40000000000000000000000016569B9D3000005A2000000000000000000000000000000000000002800000000irqbalance-1.9.3.10.git+1a7d461/ui/ui.h
#ifndef UI_H
#define UI_H
#include <glib.h>
#include <glib-unix.h>
#include <curses.h>
#include <form.h>
#include <ncurses.h>
#include <signal.h>
#include "irqbalance-ui.h"
#include "helpers.h"
extern GList *tree;
extern setup_t setup;
extern int offset;
extern int max_offset;
void show_frame();
void show_footer();
char * check_control_in_sleep_input(int max_len, int column_offest, int line_offset);
int get_valid_sleep_input(int column_offest);
void get_banned_cpu(int *cpu, void *data);
void print_cpu_line(cpu_ban_t *cpu, void *data);
void print_all_cpus();
void add_banned_cpu(int *banned_cpu, void *data);
void display_banned_cpus();
int toggle_cpu(GList *cpu_list, int cpu_number);
void get_new_cpu_ban_values(cpu_ban_t *cpu, void *data);
void get_cpu();
void handle_sleep_setting();
void handle_cpu_banning();
void copy_assigned_obj(int *number, void *data);
void print_assigned_objects_string(irq_t *irq, int *line_offset);
void print_irq_line(irq_t *irq, void *data);
void print_all_irqs();
int toggle_irq(GList *irq_list, int position);
void get_new_irq_ban_values(irq_t *irq, void *data);
void copy_irqs_from_nodes(cpu_node_t *node, void *data);
void get_all_irqs();
void handle_irq_banning();
void init();
void close_window(int sig);
void settings();
void setup_irqs();
void display_tree_node_irqs(irq_t *irq, void *data);
void display_tree_node(cpu_node_t *node, void *data);
void display_tree();
#endif /* UI_H */
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!460 blocks
