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| author | Ingo Molnar <mingo@elte.hu> | 2008-11-12 20:05:50 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-12 20:05:50 +0100 |
| commit | 5cbd54ef470d880fc37fbe4b21eb514806d51e0d (patch) | |
| tree | db9a73e605e0a2e7cfa13bd9697a113b5f6649eb /arch/parisc/include | |
| parent | a2d477778e82a60a0b7114cefdb70aa43af28782 (diff) | |
| download | op-kernel-dev-5cbd54ef470d880fc37fbe4b21eb514806d51e0d.zip op-kernel-dev-5cbd54ef470d880fc37fbe4b21eb514806d51e0d.tar.gz | |
sched: fix init_idle()'s use of sched_clock()
Maciej Rutecki reported:
> I have this bug during suspend to disk:
>
> [ 188.592151] Enabling non-boot CPUs ...
> [ 188.592151] SMP alternatives: switching to SMP code
> [ 188.666058] BUG: using smp_processor_id() in preemptible
> [00000000]
> code: suspend_to_disk/2934
> [ 188.666064] caller is native_sched_clock+0x2b/0x80
Which, as noted by Linus, was caused by me, via:
7cbaef9c "sched: optimize sched_clock() a bit"
Move the rq locking a bit earlier in the initialization sequence,
that will make the sched_clock() call in init_idle() non-preemptible.
Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/parisc/include')
0 files changed, 0 insertions, 0 deletions
