File 0004-tools-kvm_stat-simplify-line-print-logic.patch of Package kvm_stat

From 78c117092b5a4a9d3eb8c3127774caed2569eb14 Mon Sep 17 00:00:00 2001
From: Stefan Raspl <raspl@linux.vnet.ibm.com>
Date: Wed, 7 Jun 2017 21:08:29 +0200
Subject: [PATCH 04/43] tools/kvm_stat: simplify line print logic

Simplify line print logic for header and data lines in interactive mode
as previously suggested by Radim.
While at it, add a space between the first two columns to avoid the
total bleeding into the event name.
Furthermore, for column 'Current', differentiate between no events being
reported (empty 'Current' column) vs the case where events were reported
but the average was rounded down to zero ('0' in 'Current column), for
the folks who appreciate the difference.
Finally: Only skip events which were not reported at all yet, instead of
events that don't have a value in the current interval.
Considered using constants for the field widths in the format strings.
However, that would make things a bit more complicated, and considering
that there are only two places where output happens, I figured it isn't
worth the trouble.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 5a7d11f8dc59ddb36e89dca42a2526ea25914def)
[FL: FATE#325017]
Signed-off-by: Fei Li <fli@suse.com>
---
 tools/kvm/kvm_stat/kvm_stat | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index d600d2c304e3..3d40809a3ff2 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -887,8 +887,6 @@ class Stats(object):
                 self.values[key] = (newval, newdelta)
         return self.values
 
-LABEL_WIDTH = 40
-NUMBER_WIDTH = 10
 DELAY_INITIAL = 0.25
 DELAY_REGULAR = 3.0
 MAX_GUEST_NAME_LEN = 48
@@ -970,13 +968,8 @@ class Tui(object):
             if len(regex) > MAX_REGEX_LEN:
                 regex = regex[:MAX_REGEX_LEN] + '...'
             self.screen.addstr(1, 17, 'regex filter: {0}'.format(regex))
-        self.screen.addstr(2, 1, 'Event')
-        self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH -
-                           len('Total'), 'Total')
-        self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 7 -
-                           len('%Total'), '%Total')
-        self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 7 + 8 -
-                           len('Current'), 'Current')
+        self.screen.addstr(2, 1, '%-40s %10s%7s %7s' %
+                           ('Event', 'Total', '%Total', 'Current'))
         self.screen.addstr(4, 1, 'Collecting data...')
         self.screen.refresh()
 
@@ -1001,16 +994,11 @@ class Tui(object):
             values = stats[key]
             if not values[0] and not values[1]:
                 break
-            col = 1
-            self.screen.addstr(row, col, key)
-            col += LABEL_WIDTH
-            self.screen.addstr(row, col, '%10d' % (values[0],))
-            col += NUMBER_WIDTH
-            self.screen.addstr(row, col, '%7.1f' % (values[0] * 100 / total,))
-            col += 7
-            if values[1] is not None:
-                self.screen.addstr(row, col, '%8d' %
-                                   round(values[1] / sleeptime))
+            if values[0] is not None:
+                cur = int(round(values[1] / sleeptime)) if values[1] else ''
+                self.screen.addstr(row, 1, '%-40s %10d%7.1f %7s' %
+                                   (key, values[0], values[0] * 100 / total,
+                                    cur))
             row += 1
         self.screen.refresh()
 
-- 
2.12.3