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| author | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-02-12 17:27:56 +0900 |
| commit | 41480ae7a383dcffa497decdd97b3cb2caaa18ec (patch) | |
| tree | f1e3afce2cbd0bbc544cd86a73e5b3093eb081c4 /kernel/sched.c | |
| parent | 508eb2ce222053e51e2243b7add8eeac85b1d250 (diff) | |
| parent | 34aeb43e2d3800f4d8f96feb9f1b49cd506679d5 (diff) | |
| download | kernel-crypto-41480ae7a383dcffa497decdd97b3cb2caaa18ec.tar.gz kernel-crypto-41480ae7a383dcffa497decdd97b3cb2caaa18ec.tar.xz kernel-crypto-41480ae7a383dcffa497decdd97b3cb2caaa18ec.zip | |
Merge branch 'sh/stable-updates'
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 52bbf1c842a..c1d0ed36008 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3880,19 +3880,24 @@ int select_nohz_load_balancer(int stop_tick) int cpu = smp_processor_id(); if (stop_tick) { - cpumask_set_cpu(cpu, nohz.cpu_mask); cpu_rq(cpu)->in_nohz_recently = 1; - /* - * If we are going offline and still the leader, give up! - */ - if (!cpu_active(cpu) && - atomic_read(&nohz.load_balancer) == cpu) { + if (!cpu_active(cpu)) { + if (atomic_read(&nohz.load_balancer) != cpu) + return 0; + + /* + * If we are going offline and still the leader, + * give up! + */ if (atomic_cmpxchg(&nohz.load_balancer, cpu, -1) != cpu) BUG(); + return 0; } + cpumask_set_cpu(cpu, nohz.cpu_mask); + /* time for ilb owner also to sleep */ if (cpumask_weight(nohz.cpu_mask) == num_online_cpus()) { if (atomic_read(&nohz.load_balancer) == cpu) @@ -4687,8 +4692,8 @@ EXPORT_SYMBOL(default_wake_function); * started to run but is not in state TASK_RUNNING. try_to_wake_up() returns * zero in this (rare) case, and we handle it by continuing to scan the queue. */ -static void __wake_up_common(wait_queue_head_t *q, unsigned int mode, - int nr_exclusive, int sync, void *key) +void __wake_up_common(wait_queue_head_t *q, unsigned int mode, + int nr_exclusive, int sync, void *key) { wait_queue_t *curr, *next; |