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* waitqueue lockdep annotation
@ 2017-11-30 14:20 Christoph Hellwig
  2017-11-30 14:20 ` [PATCH 1/2] sched/wait: assert the wait_queue_head lock is held in __wake_up_common Christoph Hellwig
                   ` (2 more replies)
  0 siblings, 3 replies; 16+ messages in thread
From: Christoph Hellwig @ 2017-11-30 14:20 UTC (permalink / raw)
  To: Ingo Molnar, eter Zijlstra
  Cc: Andrew Morton, Al Viro, linux-fsdevel, linux-kernel

Hi all,

this series adds a strategic lockdep_assert_held to __wake_up_common
to ensure callers really do hold the wait_queue_head lock when calling
the unlocked wake_up variants.  It turns out epoll did not do this
for a fairly common path (hit all the time by systemd during bootup),
so the second patch fixed this instance as well.

^ permalink raw reply	[flat|nested] 16+ messages in thread
* waitqueue lockdep annotation
@ 2017-12-06 23:52 Christoph Hellwig
  0 siblings, 0 replies; 16+ messages in thread
From: Christoph Hellwig @ 2017-12-06 23:52 UTC (permalink / raw)
  To: Ingo Molnar, Peter Zijlstra
  Cc: Andrew Morton, Al Viro, Jason Baron, linux-fsdevel, linux-kernel

Hi all,

this series adds a strategic lockdep_assert_held to __wake_up_common
to ensure callers really do hold the wait_queue_head lock when calling
the unlocked wake_up variants.  It turns out epoll did not do this
for a fairly common path (hit all the time by systemd during bootup),
so the second patch fixed this instance as well.

^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2017-12-06 23:52 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-30 14:20 waitqueue lockdep annotation Christoph Hellwig
2017-11-30 14:20 ` [PATCH 1/2] sched/wait: assert the wait_queue_head lock is held in __wake_up_common Christoph Hellwig
2017-11-30 14:20 ` [PATCH 2/2] epoll: use proper wake_up variant in ep_poll_callback Christoph Hellwig
2017-11-30 20:50 ` waitqueue lockdep annotation Andrew Morton
2017-11-30 21:38   ` Jason Baron
2017-11-30 22:11     ` Christoph Hellwig
2017-11-30 22:18       ` Jason Baron
2017-12-01 17:11         ` Christoph Hellwig
2017-12-01 19:00           ` Jason Baron
2017-12-01 22:02             ` Christoph Hellwig
2017-12-01 22:34               ` Jason Baron
2017-12-01 23:03                 ` Christoph Hellwig
2017-12-05 15:24                   ` Jason Baron
2017-12-05 15:36                     ` Davidlohr Bueso
2017-12-06 23:51                     ` Christoph Hellwig
2017-12-06 23:52 Christoph Hellwig

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