On 01/07, Oleg Nesterov wrote: > > How about: > > CPU_DEAD does nothing. After __cpu_disable() cwq->thread runs on > all CPUs and becomes idle when it flushes cwq->worklist: nobody > will add work_struct on that list. Also, we can add cpu_workqueue_struct->should_exit_after_flush flag, but we have to be careful to serialize with destroy_workqueue/CPU_UP. > CPU_UP: > if (!cwq->thread) > create_workqueue_thread(); > else > set_cpus_allowed(newcpu); > > flush_workqueue: > for_each_possible_cpu() // NOT online! > if (cwq->thread) > flush_cpu_workqueue() - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- References:
- Re: [PATCH, RFC] reimplement flush_workqueue()
- From: Oleg Nesterov <[email protected]>
- Re: [PATCH, RFC] reimplement flush_workqueue()
- From: Andrew Morton <[email protected]>
- [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
- From: Oleg Nesterov <[email protected]>
- Re: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
- From: Srivatsa Vaddagiri <[email protected]>
- Re: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
- From: Oleg Nesterov <[email protected]>
- Re: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
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- Re: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
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- Re: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
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- From: Oleg Nesterov <[email protected]>
- Re: [PATCH, RFC] reimplement flush_workqueue()
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