oom_ajd: don't use WARN_ONCE, just use printk_once
Linus Torvalds [Sat, 6 Aug 2011 18:43:08 +0000 (11:43 -0700)]
WARN_ONCE() is very annoying, in that it shows the stack trace that we
don't care about at all, and also triggers various user-level "kernel
oopsed" logic that we really don't care about.  And it's not like the
user can do anything about the applications (sshd) in question, it's a
distro issue.

Requested-by: Andi Kleen <andi@firstfloor.org> (and many others)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/proc/base.c

index 08e3ecc..73a562b 100644 (file)
@@ -1118,7 +1118,7 @@ static ssize_t oom_adjust_write(struct file *file, const char __user *buf,
         * Warn that /proc/pid/oom_adj is deprecated, see
         * Documentation/feature-removal-schedule.txt.
         */
-       WARN_ONCE(1, "%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n",
+       printk_once(KERN_WARNING "%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n",
                  current->comm, task_pid_nr(current), task_pid_nr(task),
                  task_pid_nr(task));
        task->signal->oom_adj = oom_adjust;