From: Wang Qing <wangqing@vivo.com>
To: Jonathan Corbet <corbet@lwn.net>, Wang Qing <wangqing@vivo.com>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Joe Perches <joe@perches.com>, Stephen Kitt <steve@sk2.org>,
Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
Randy Dunlap <rdunlap@infradead.org>,
"Guilherme G. Piccoli" <gpiccoli@canonical.com>,
Qais Yousef <qais.yousef@arm.com>, Petr Mladek <pmladek@suse.com>,
Santosh Sivaraj <santosh@fossix.org>,
Vlastimil Babka <vbabka@suse.cz>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH V2,RESEND 4/4] doc: watchdog: Modify the doc related to "watchdog/%u"
Date: Thu, 29 Apr 2021 17:04:28 +0800 [thread overview]
Message-ID: <1619687073-24686-5-git-send-email-wangqing@vivo.com> (raw)
In-Reply-To: <1619687073-24686-2-git-send-email-wangqing@vivo.com>
"watchdog/%u" threads has be replaced by cpu_stop_work. The current
description is extremely misleading.
---
Documentation/admin-guide/sysctl/kernel.rst | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 1d56a6b..32b0791
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -1282,11 +1282,11 @@ This parameter can be used to control the soft lockup detector.
= =================================
The soft lockup detector monitors CPUs for threads that are hogging the CPUs
-without rescheduling voluntarily, and thus prevent the 'watchdog/N' threads
-from running. The mechanism depends on the CPUs ability to respond to timer
-interrupts which are needed for the 'watchdog/N' threads to be woken up by
-the watchdog timer function, otherwise the NMI watchdog — if enabled — can
-detect a hard lockup condition.
+without rescheduling voluntarily, and thus prevent the 'migration/N' threads
+from running, causing the watchdog work fail to execute. The mechanism depends
+on the CPUs ability to respond to timer interrupts which are needed for the
+watchdog work to be queued by the watchdog timer function, otherwise the NMI
+watchdog — if enabled — can detect a hard lockup condition.
stack_erasing
--
2.7.4
next prev parent reply other threads:[~2021-04-29 9:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 9:04 [PATCH V2,RESEND 1/4] kernel: watchdog: Modify the explanation related to watchdog thread Wang Qing
2021-04-29 9:04 ` [PATCH V2,RESEND 2/4] doc: watchdog: Delete the explanation about "watchdog/%u" Wang Qing
2021-04-29 9:04 ` [PATCH V2,RESEND 3/4] doc: watchdog: Modify the explanation related to watchdog thread Wang Qing
2021-04-29 9:04 ` Wang Qing [this message]
2021-04-29 9:29 ` [PATCH V2,RESEND 1/4] kernel: " Petr Mladek
2021-05-09 23:29 ` Andrew Morton
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