On 01/12/2014 10:42 AM, tip-bot for John Stultz wrote:
> Commit-ID: 7a06c41cbec33c6dbe7eec575c61986122617408
> Gitweb: http://git.kernel.org/tip/7a06c41cbec33c6dbe7eec575c61986122617408
> Author: John Stultz <[email protected]>
> AuthorDate: Thu, 2 Jan 2014 15:11:14 -0800
> Committer: Ingo Molnar <[email protected]>
> CommitDate: Sun, 12 Jan 2014 10:14:00 +0100
>
> sched_clock: Disable seqlock lockdep usage in sched_clock()
>
> Unfortunately the seqlock lockdep enablement can't be used
> in sched_clock(), since the lockdep infrastructure eventually
> calls into sched_clock(), which causes a deadlock.
>
> Thus, this patch changes all generic sched_clock() usage
> to use the raw_* methods.
>
> Acked-by: Linus Torvalds <[email protected]>
> Reviewed-by: Stephen Boyd <[email protected]>
> Reported-by: Krzysztof Hałasa <[email protected]>
> Signed-off-by: John Stultz <[email protected]>
> Cc: Uwe Kleine-König <[email protected]>
> Cc: Willy Tarreau <[email protected]>
> Signed-off-by: Peter Zijlstra <[email protected]>
> Link:
> http://lkml.kernel.org/r/[email protected]
> Signed-off-by: Ingo Molnar <[email protected]>
Hey Ingo,
Just wanted to follow up here, since I've still not seen this (and
the raw_ renaming patch) submitted to Linus. These address a lockup that
triggers on ARM systems if lockdep is enabled and it would be good to
get it in before 3.13 is out.
thanks
-john
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