diff options
| author | Andrew Morton <akpm@osdl.org> | 2007-05-09 02:33:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:50 -0700 |
| commit | e18f3ffb9c3ddfc1b4ad8f38f5f2acae8c16f0c9 (patch) | |
| tree | 6a1ccc7a10ccc25dd9b7e09fefa3db96e211e1ee | |
| parent | a1e3cf418fc1e6b13bdc472ffb60bd02735e41a6 (diff) | |
schedule_on_each_cpu(): use preempt_disable()
We take workqueue_mutex in there to keep CPU hotplug away. But
preempt_disable() will suffice for that.
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/workqueue.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index b6fa5e63085..1ea4bcb8697 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -638,7 +638,7 @@ int schedule_on_each_cpu(work_func_t func) if (!works) return -ENOMEM; - mutex_lock(&workqueue_mutex); + preempt_disable(); /* CPU hotplug */ for_each_online_cpu(cpu) { struct work_struct *work = per_cpu_ptr(works, cpu); @@ -646,7 +646,7 @@ int schedule_on_each_cpu(work_func_t func) set_bit(WORK_STRUCT_PENDING, work_data_bits(work)); __queue_work(per_cpu_ptr(keventd_wq->cpu_wq, cpu), work); } - mutex_unlock(&workqueue_mutex); + preempt_enable(); flush_workqueue(keventd_wq); free_percpu(works); return 0; |