From: Wang Qing <wangqing@xxxxxxxx> Subject: doc: watchdog: modify the doc related to "watchdog/%u" "watchdog/%u" threads has be replaced by cpu_stop_work. The current description is extremely misleading. Link: https://lkml.kernel.org/r/1619687073-24686-5-git-send-email-wangqing@xxxxxxxx Signed-off-by: Wang Qing <wangqing@xxxxxxxx> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Cc: "Guilherme G. Piccoli" <gpiccoli@xxxxxxxxxxxxx> Cc: Joe Perches <joe@xxxxxxxxxxx> Cc: Jonathan Corbet <corbet@xxxxxxx> Cc: Kees Cook <keescook@xxxxxxxxxxxx> Cc: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> Cc: Qais Yousef <qais.yousef@xxxxxxx> Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Santosh Sivaraj <santosh@xxxxxxxxxx> Cc: Stephen Kitt <steve@xxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/admin-guide/sysctl/kernel.rst | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/Documentation/admin-guide/sysctl/kernel.rst~doc-watchdog-modify-the-doc-related-to-watchdog-%u +++ a/Documentation/admin-guide/sysctl/kernel.rst @@ -1283,11 +1283,11 @@ This parameter can be used to control th = ================================= 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 _
