Messages in this thread | | | Date | Mon, 18 Nov 2013 17:49:02 -0700 | From | Jonathan Corbet <> | Subject | Re: [PATCH/RFC] wait_for_completion_timeout() considered harmful. |
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On Tue, 19 Nov 2013 00:42:09 +0100 Peter Zijlstra <peterz@infradead.org> wrote:
> I briefly talked to Thomas about this earlier today and we need to fix > this at a lower level -- the quick 'n dirty solution is to add 1 jiffy > down in the timer-wheel when we enqueue these things.
That can lead to situations like the one I encountered years ago where msleep(1) would snooze for 20ms. I didn't get much love for my idea of switching msleep() to hrtimers back then, but I still think it might be be better to provide the resolution that the interface appears to promise.
jon
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