Messages in this thread | | | Date | Sat, 5 Jun 2010 11:37:09 +0200 | Subject | Re: [PATCH RFC] reduce runqueue lock contention | From | Stijn Devriendt <> |
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On Fri, Jun 4, 2010 at 2:00 PM, Peter Zijlstra <peterz@infradead.org> wrote: > On Fri, 2010-06-04 at 12:56 +0200, Stijn Devriendt wrote: > >> The issue I want to tackle is waking up processes when others go to sleep. >> This means try_to_wake_up() from inside the runqueue lock. > > > Tejun did something for that: > > http://lkml.org/lkml/2010/5/13/136 > > >
The difference with what I have is that Tejun's threads are guaranteed to be local and on the same CPU/runqueue avoiding runqueue deadlocks. My code can be used to wake up any thread as I basically defer waking up untill after the runqueue lock is released. -- 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/
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