From: Wang Jinchao <wangjinchao600@gmail.com>
To: Petr Mladek <pmladek@suse.com>,
John Ogness <john.ogness@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
Joel Granados <joel.granados@kernel.org>,
Dave Jiang <dave.jiang@intel.com>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Sravan Kumar Gundu <sravankumarlpu@gmail.com>,
Ryo Takakura <takakura@valinux.co.jp>
Cc: linux-kernel@vger.kernel.org,
Wang Jinchao <wangjinchao600@gmail.com>,
Wei Liu <wei.liu@kernel.org>, Jason Gunthorpe <jgg@ziepe.ca>
Subject: [PATCH] panic: call hardlockup_detector_perf_stop in panic
Date: Wed, 30 Jul 2025 11:06:33 +0800 [thread overview]
Message-ID: <20250730030638.65355-1-wangjinchao600@gmail.com> (raw)
When a panic happens, it blocks the cpu, which may
trigger the hardlockup detector if some dump is slow.
So call hardlockup_detector_perf_stop() to disable
hardlockup dector.
Signed-off-by: Wang Jinchao <wangjinchao600@gmail.com>
---
kernel/panic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/panic.c b/kernel/panic.c
index b0b9a8bf4560..52a1ac4ad447 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -339,6 +339,7 @@ void panic(const char *fmt, ...)
*/
local_irq_disable();
preempt_disable_notrace();
+ hardlockup_detector_perf_stop();
/*
* It's possible to come here directly from a panic-assertion and
--
2.43.0
next reply other threads:[~2025-07-30 3:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-30 3:06 Wang Jinchao [this message]
2025-08-19 15:01 ` Petr Mladek
2025-08-20 6:22 ` Jinchao Wang
2025-08-20 10:22 ` Petr Mladek
2025-08-21 1:35 ` Jinchao Wang
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