Messages in this thread | | | Subject | Re: scheduling hrtimers while holding rq->lock | From | Peter Zijlstra <> | Date | Tue, 29 Jul 2008 22:52:10 +0200 |
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On Tue, 2008-07-29 at 15:23 -0400, Daniel Rosenthal wrote: > What's the best way for scheduling code to start an hrtimer while > holding the rq->lock? I am trying to implement SCHED_SPORADIC > (sporadic server) in the realtime scheduling class (rt_sched_class), > and it needs to schedule aperiodic, asynchronous replenishment > operations which are independent of timeslice expiration. This is to > implement the functionality that when a SCHED_SPORADIC task blocks or > uses up its timeslice, one of these asynchronous events is scheduled > to happen at some time offset in the future that doesn't necessarily > correspond to any timeslice expiration. > > Is there some way to schedule this event without duplicating the code > that the generic scheduler currently uses for its hrtick_timer? As > in, is there a way to do this without adding a thread flag similar in > function to TIF_HRTICK_RESCHED and calling an rt_sched_class function > from do_notify_resume if the flag is set? > > The code snippet below is what I am trying to do. > > Please CC me explicitly in any replies.
Look at .27-rc1 ;-)
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