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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-02-12 09:00:52 -0500
committerIngo Molnar <mingo@elte.hu>2009-02-13 07:04:05 -0500
commit3997ad317fdf9ecdb5702e2b4fd1f8229814ff8c (patch)
treebe0b1802f65e85157d97acac38f1bd310ba6d626 /Documentation/stable_kernel_rules.txt
parent37bed90094fdb1eea6e4afec6a200d4e60143e55 (diff)
timers: more consistently use clock vs timer
While reviewing the manpages, I noticed I'd missed some clock vs timer sites. Make sure that all timer functions call cpu_timer_sample_group() and not cpu_clock_sample_group(). This ensures that we enable the process wide timer in time, and therefore pay the O(n) thread group cost from the syscall. Not doing it here, will result in the first jiffy tick after setting the timer doing this, resulting in a very expensive tick (but only once) and a delay in actually starting the timer. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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