Messages in this thread Patch in this message | | | Date | Tue, 19 Aug 2008 15:54:35 -0700 | From | Justin Madru <> | Subject | [PATCH] sched: disable hrtick implementation |
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The hrtick implementation in 2.6.25 and .26 has been known to cause boot problems with at least Intel GMA cards. see:
https://bugs.freedesktop.org/show_bug.cgi?id=15602 http://bugzilla.kernel.org/show_bug.cgi?id=10892
A full fix to hrtick went into 2.6.27 (31656519e132f6612584815f128c83976a9aaaef), but that fix is too intrusive to backport. Henceforth, we default to disable hrtick.
Signed-off-by: Justin Madru <jdm64@gawab.com> Tested-by: Justin Madru <jdm64@gawab.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu>
--- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -4,7 +4,7 @@ SCHED_FEAT(AFFINE_WAKEUPS, 1) SCHED_FEAT(CACHE_HOT_BUDDY, 1) SCHED_FEAT(SYNC_WAKEUPS, 1) -SCHED_FEAT(HRTICK, 1) +SCHED_FEAT(HRTICK, 0) SCHED_FEAT(DOUBLE_TICK, 0) SCHED_FEAT(NORMALIZED_SLEEPER, 1) SCHED_FEAT(DEADLINE, 1)
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