* [PATCH] hung_task: Print message when hung_task_warnings gets down to zero.
@ 2023-02-01 13:29 fuyuanli
0 siblings, 0 replies; 3+ messages in thread
From: fuyuanli @ 2023-02-01 13:29 UTC (permalink / raw)
To: pmladek, akpm, linux; +Cc: linux-kernel
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.
Signed-off-by: fuyuanli <fuyuanli@didiglobal.com>
---
kernel/hung_task.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index bb2354f73ded..ff479c51143d 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -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();
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] hung_task: Print message when hung_task_warnings gets down to zero.
2023-02-01 13:54 fuyuanli
@ 2023-02-02 9:59 ` Petr Mladek
0 siblings, 0 replies; 3+ messages in thread
From: Petr Mladek @ 2023-02-02 9:59 UTC (permalink / raw)
To: akpm, linux, linux-kernel
On Wed 2023-02-01 21:54:33, fuyuanli wrote:
> 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.
>
> Signed-off-by: fuyuanli <fuyuanli@didiglobal.com>
Looks good to me.
Reviewed-by: Petr Mladek <pmladek@suse.com>
Best Regards,
Petr
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] hung_task: Print message when hung_task_warnings gets down to zero.
@ 2023-02-01 13:54 fuyuanli
2023-02-02 9:59 ` Petr Mladek
0 siblings, 1 reply; 3+ messages in thread
From: fuyuanli @ 2023-02-01 13:54 UTC (permalink / raw)
To: pmladek, akpm, linux; +Cc: linux-kernel
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.
Signed-off-by: fuyuanli <fuyuanli@didiglobal.com>
---
kernel/hung_task.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index bb2354f73ded..ff479c51143d 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -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();
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
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2023-02-01 13:29 [PATCH] hung_task: Print message when hung_task_warnings gets down to zero fuyuanli
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