Commit b1f712b3 authored by fuyuanli's avatar fuyuanli Committed by Andrew Morton
Browse files

hung_task: print message when hung_task_warnings gets down to zero. 

It's useful to report it when hung_task_warnings gets down to zero, so
that we can know if kernel log was lost or there is no hung task was
detected.

Link: https://lkml.kernel.org/r/20230201135416.GA6560@didi-ThinkCentre-M920t-N000


Signed-off-by: default avatarfuyuanli <fuyuanli@didiglobal.com>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 9f79ffc1

kernel/hung_task.c

+2 −0
Original line number Diff line number Diff line
@@ -142,6 +142,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) 


		if (sysctl_hung_task_all_cpu_backtrace)

			hung_task_show_all_bt = true;

		if (!sysctl_hung_task_warnings)

			pr_info("Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings\n");

	}



	touch_nmi_watchdog();