lkml.org 
[lkml]   [2007]   [Jan]   [7]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSun, 7 Jan 2007 17:22:46 +0300
FromOleg Nesterov <>
SubjectRe: [PATCH] fix-flush_workqueue-vs-cpu_dead-race-update
On 01/07, Oleg Nesterov wrote:
>
> Thoughts?

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.

	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()
Oleg.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-01-07 15:25    [from the cache]
©2003-2008