From dcb6b45254e2281b6f99ea7f2d51343954aa3ba8 Mon Sep 17 00:00:00 2001
From: Alex Thorlton <athorlton@sgi.com>
Date: Mon, 8 Jul 2013 16:00:42 -0700
Subject: [PATCH] panic: add cpu/pid to warn_slowpath_common in WARNING
printk()s
Add the cpu/pid that called WARN() so that the stack traces can be
matched up with the WARNING messages.
[akpm@linux-foundation.org: remove stray quote]
Signed-off-by: Alex Thorlton <athorlton@sgi.com>
Reviewed-by: Robin Holt <holt@sgi.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Vikram Mulukutla <markivx@codeaurora.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/panic.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/panic.c b/kernel/panic.c
index 167ec097ce8b3..97712319f1284 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -399,8 +399,9 @@ struct slowpath_args {
static void warn_slowpath_common(const char *file, int line, void *caller,
unsigned taint, struct slowpath_args *args)
{
- printk(KERN_WARNING "------------[ cut here ]------------\n");
- printk(KERN_WARNING "WARNING: at %s:%d %pS()\n", file, line, caller);
+ pr_warn("------------[ cut here ]------------\n");
+ pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS()\n",
+ raw_smp_processor_id(), current->pid, file, line, caller);
if (args)
vprintk(args->fmt, args->args);
--
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