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Commit 9bfb1839 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
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[PATCH] workqueue: fix schedule_on_each_cpu() 



fix the schedule_on_each_cpu() implementation: __queue_work() is now
stricter, hence set the work-pending bit before passing in the new work.

(found in the -rt tree, using Peter Zijlstra's files-lock scalability
patchset)

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 5ccac88e

kernel/workqueue.c

+5 −3
Original line number Diff line number Diff line
@@ -637,9 +637,11 @@ int schedule_on_each_cpu(work_func_t func) 


	mutex_lock(&workqueue_mutex);

	for_each_online_cpu(cpu) {

		INIT_WORK(per_cpu_ptr(works, cpu), func);

		__queue_work(per_cpu_ptr(keventd_wq->cpu_wq, cpu),

				per_cpu_ptr(works, cpu));

		struct work_struct *work = per_cpu_ptr(works, cpu);



		INIT_WORK(work, 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);

	flush_workqueue(keventd_wq);