diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-05-09 23:28:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-05-09 23:28:35 -0700 |
| commit | 2ce2e329ddad1da9b86eb159a6c54a57850855d5 (patch) | |
| tree | 3f788ce602197554c522082ad44b56b26360e2d2 /kernel | |
| parent | 7dc127021abbd45d928fafdcd57422d689e18be5 (diff) | |
| download | history-2ce2e329ddad1da9b86eb159a6c54a57850855d5.tar.gz | |
[PATCH] sched: lock cpu_attach_domain for hotplug
From: Nick Piggin <nickpiggin@yahoo.com.au>
The attached patch is required to work correctly with the CPU hotplug
framework. John Hawkes reports successful booting with this.
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 7bf07d5942e06a..89180b65488db9 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3457,6 +3457,8 @@ void cpu_attach_domain(struct sched_domain *sd, int cpu) runqueue_t *rq = cpu_rq(cpu); int local = 1; + lock_cpu_hotplug(); + spin_lock_irqsave(&rq->lock, flags); if (cpu == smp_processor_id() || cpu_is_offline(cpu)) { @@ -3475,6 +3477,8 @@ void cpu_attach_domain(struct sched_domain *sd, int cpu) wake_up_process(rq->migration_thread); wait_for_completion(&req.done); } + + unlock_cpu_hotplug(); } #ifdef ARCH_HAS_SCHED_DOMAIN |