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(parent: 32a16bc) | patch
workqueue: avoid hard lockups in show_workqueue_state()
authorSergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Thu, 11 Jan 2018 00:53:35 +0000 (09:53 +0900)
committerTejun Heo <tj@kernel.org>
Fri, 12 Jan 2018 19:39:49 +0000 (11:39 -0800)
commit859b55eafb8227b2cf2095873d263aac61c184aa
tree31dbe0ad060063595b2c088e5d1ccd88bde93974tree | snapshot
parent32a16bc8898fa9b3ab0ba4aa243a8eb5f5340ff8commit | diff
workqueue: avoid hard lockups in show_workqueue_state()

show_workqueue_state() can print out a lot of messages while being in
atomic context, e.g. sysrq-t -> show_workqueue_state(). If the console
device is slow it may end up triggering NMI hard lockup watchdog.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # v4.5+
kernel/workqueue.c diff | blob | history
Linux Kernel Source Tree.