File crash-sles9-time.patch of Package crash.20240501005533

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File crash-sles9-time.patch of Package crash.20240501005533

From: Alan Tyson <atyson@hp.com>
Subject: [PATCH] Fix "uptime" and "ps -t" for SLES9
References: 352836

This patch adds a quirk for SLES9 jiffies initialisation and corrects the time
data in "uptime" and "ps -t" command.

Acked-by: Bernhard Walle <bwalle@suse.de>

---
 defs.h   |    8 ++++++++
 kernel.c |    9 ++++++++-
 task.c   |   11 +++++++++++
 3 files changed, 27 insertions(+), 1 deletion(-)

Index: b/defs.h
===================================================================
--- a/defs.h
+++ b/defs.h
@@ -767,6 +767,7 @@ struct kernel_table {
 		ulong p2m_missing;
 	} pvops_xen;
 	int highest_irq;
+    int is_suse_kernel;
 #define IKCONFIG_AVAIL	0x1	/* kernel contains ikconfig data */
 #define IKCONFIG_LOADED	0x2	/* ikconfig data is currently loaded */
 	int ikconfig_flags;
@@ -7674,6 +7675,13 @@ extern struct lkcd_environment *lkcd;
 
 #endif  /* LKCD_COMMON */
 
+
+/*
+ * SUSE specific
+ */
+#define is_SLES9() \
+	((THIS_KERNEL_VERSION == LINUX(2,6,5)) && kt->is_suse_kernel)
+
 /*
  *  gdb_interface.c
  */
Index: b/kernel.c
===================================================================
--- a/kernel.c
+++ b/kernel.c
@@ -315,6 +315,12 @@ kernel_init()
 
 	verify_version();
 
+	/*
+	 * check if we have a suse kernel (this is the module supported
+	 * patch of agruen@suse.de
+	 */
+	kt->is_suse_kernel = symbol_exists("unsupported");
+
 	if (symbol_exists("__per_cpu_offset")) {
 		if (LKCD_KERNTYPES())
 			i = get_cpus_possible();
@@ -5852,7 +5858,7 @@ get_uptime(char *buf, ulonglong *j64p)
 
 	if (symbol_exists("jiffies_64")) {
 		get_symbol_data("jiffies_64", sizeof(ulonglong), &jiffies_64);
-		if (THIS_KERNEL_VERSION >= LINUX(2,6,0)) {
+		if (THIS_KERNEL_VERSION >= LINUX(2,6,0) && !is_SLES9()) {
 			wrapped = (jiffies_64 & 0xffffffff00000000ULL);
 			if (wrapped) {
 				wrapped -= 0x100000000ULL;
@@ -6454,6 +6460,7 @@ no_cpu_flags:
 			fprintf(fp, "            p2m_mid_missing: %lx\n", kt->pvops_xen.p2m_mid_missing);
 		fprintf(fp, "                p2m_missing: %lx\n", kt->pvops_xen.p2m_missing);
 	}
+	fprintf(fp, "         is_suse_kernel: %d\n", kt->is_suse_kernel);
 }
 
 /*
Index: b/task.c
===================================================================
--- a/task.c
+++ b/task.c
@@ -4687,6 +4687,12 @@ start_time_timespec(void)
 	default:
 		break;
 	}
+	/* SLES9 stores start_time in nanoseconds, so set TIMESPEC in order */
+	/* to do the right calculations in convert_start_time               */
+	if (is_SLES9()) {
+		tt->flags |= TIMESPEC;
+		return TRUE;
+	}
 
 	tt->flags |= NO_TIMESPEC;
 
@@ -4710,6 +4716,11 @@ convert_start_time(ulonglong start_time,
 	ulong tmp1, tmp2;
 	ulonglong wrapped;
 
+	/* SLES9's start_time is neither jiffies nor a timespec.  It's ns */
+	if (is_SLES9()) {
+		start_time = start_time / 1000000000;
+	}
+
         switch(tt->flags & (TIMESPEC | NO_TIMESPEC | START_TIME_NSECS))
         {
 	case START_TIME_NSECS:

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