The patch titled
Subject: watchdog: output this_cpu when printing hard LOCKUP
has been added to the -mm mm-nonmm-unstable branch. Its filename is
watchdog-output-this_cpu-when-printing-hard-lockup.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/watchdog-output-this_cpu-when-printing-hard-lockup.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Yunhui Cui <cuiyunhui@xxxxxxxxxxxxx>
Subject: watchdog: output this_cpu when printing hard LOCKUP
Date: Tue, 10 Dec 2024 17:52:38 +0800
When printing "Watchdog detected hard LOCKUP on cpu", also output the
detecting CPU. It's more intuitive.
Link: https://lkml.kernel.org/r/20241210095238.63444-1-cuiyunhui@xxxxxxxxxxxxx
Signed-off-by: Yunhui Cui <cuiyunhui@xxxxxxxxxxxxx>
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Cc: Bitao Hu <yaoma@xxxxxxxxxxxxxxxxx>
Cc: Joel Granados <joel.granados@xxxxxxxxxx>
Cc: John Ogness <john.ogness@xxxxxxxxxxxxx>
Cc: Liu Song <liusong@xxxxxxxxxxxxxxxxx>
Cc: Song Liu <song@xxxxxxxxxx>
Cc: Thomas WeiÃ?schuh <linux@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/watchdog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/watchdog.c~watchdog-output-this_cpu-when-printing-hard-lockup
+++ a/kernel/watchdog.c
@@ -190,7 +190,7 @@ void watchdog_hardlockup_check(unsigned
* with printk_cpu_sync_get_irqsave() that we can still at least
* get the message about the lockup out.
*/
- pr_emerg("Watchdog detected hard LOCKUP on cpu %d\n", cpu);
+ pr_emerg("CPU%u: Watchdog detected hard LOCKUP on cpu %u\n", this_cpu, cpu);
printk_cpu_sync_get_irqsave(flags);
print_modules();
_
Patches currently in -mm which might be from cuiyunhui@xxxxxxxxxxxxx are
watchdog-output-this_cpu-when-printing-hard-lockup.patch
