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authorTim Bird <tim.bird@am.sony.com>2012-05-31 16:26:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-31 17:49:28 -0700
commit168eeccbc956d2ec083c3a513f7706784ee0dc5f (patch)
tree6fb95d3080fadd96ea37b0e8c1bd747a183f8f60 /kernel/exit.c
parent43e13cc107cf6cd3c15fbe1cef849435c2223d50 (diff)
downloadlinux-168eeccbc956d2ec083c3a513f7706784ee0dc5f.tar.bz2
stack usage: add pid to warning printk in check_stack_usage
In embedded systems, sometimes the same program (busybox) is the cause of multiple warnings. Outputting the pid with the program name in the warning printk helps distinguish which instances of a program are using the stack most. This is a small patch, but useful. Signed-off-by: Tim Bird <tim.bird@am.sony.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 3281493ce7ad..6d85655353e9 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -884,9 +884,9 @@ static void check_stack_usage(void)
spin_lock(&low_water_lock);
if (free < lowest_to_date) {
- printk(KERN_WARNING "%s used greatest stack depth: %lu bytes "
- "left\n",
- current->comm, free);
+ printk(KERN_WARNING "%s (%d) used greatest stack depth: "
+ "%lu bytes left\n",
+ current->comm, task_pid_nr(current), free);
lowest_to_date = free;
}
spin_unlock(&low_water_lock);