The patch titled
Subject: stack usage: add pid to warning printk in check_stack_usage
has been added to the -mm tree. Its filename is
stack-usage-add-pid-to-warning-printk-in-check_stack_usage.patch
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------------------------------------------------------
From: Tim Bird <tim.bird@xxxxxxxxxxx>
Subject: 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@xxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/exit.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN kernel/exit.c~stack-usage-add-pid-to-warning-printk-in-check_stack_usage kernel/exit.c
--- a/kernel/exit.c~stack-usage-add-pid-to-warning-printk-in-check_stack_usage
+++ a/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);
_
Subject: Subject: stack usage: add pid to warning printk in check_stack_usage
Patches currently in -mm which might be from tim.bird@xxxxxxxxxxx are
stack-usage-add-pid-to-warning-printk-in-check_stack_usage.patch
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