work_on_cpu: Use our own workqueue.
Impact: remove potential clashes with generic kevent workqueue Annoyingly, some places we want to use work_on_cpu are already in workqueues. As per Ingo's suggestion, we create a different workqueue for work_on_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -971,6 +971,8 @@ undo:
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}
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}
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#ifdef CONFIG_SMP
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#ifdef CONFIG_SMP
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static struct workqueue_struct *work_on_cpu_wq __read_mostly;
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struct work_for_cpu {
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struct work_for_cpu {
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struct work_struct work;
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struct work_struct work;
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long (*fn)(void *);
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long (*fn)(void *);
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@ -1001,7 +1003,7 @@ long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
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INIT_WORK(&wfc.work, do_work_for_cpu);
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INIT_WORK(&wfc.work, do_work_for_cpu);
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wfc.fn = fn;
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wfc.fn = fn;
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wfc.arg = arg;
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wfc.arg = arg;
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schedule_work_on(cpu, &wfc.work);
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queue_work_on(cpu, work_on_cpu_wq, &wfc.work);
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flush_work(&wfc.work);
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flush_work(&wfc.work);
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return wfc.ret;
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return wfc.ret;
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@ -1019,4 +1021,8 @@ void __init init_workqueues(void)
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hotcpu_notifier(workqueue_cpu_callback, 0);
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hotcpu_notifier(workqueue_cpu_callback, 0);
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keventd_wq = create_workqueue("events");
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keventd_wq = create_workqueue("events");
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BUG_ON(!keventd_wq);
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BUG_ON(!keventd_wq);
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#ifdef CONFIG_SMP
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work_on_cpu_wq = create_workqueue("work_on_cpu");
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BUG_ON(!work_on_cpu_wq);
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#endif
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}
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}
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