Messages in this thread | | | Subject | Re: [rfc patch v2] rt,nohz_full: fix nohz_full for PREEMPT_RT_FULL | From | Mike Galbraith <> | Date | Fri, 10 Apr 2015 16:28:34 +0200 |
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On Fri, 2015-04-10 at 16:15 +0200, Sebastian Andrzej Siewior wrote: > * Mike Galbraith | 2015-03-13 05:53:25 [+0100]: > > > First of all, a task being ticked and trying to shut the tick down > > will > > fail to do so due to having just awakened ksoftirqd, so let > > ksoftirqd > > try to do that after SOFTIRQ_TIMER processing. Secondly, should > > the > > tick be shut down, we may livelock in hrtimer-cancel() because in - > > rt > > a callback may be running. Break the loop, and let > > tick_nohz_restart() > > know that the timer is busy so it can bail. > > So with this patch > http://marc.info/?l=linux-rt-users&m=142866940327602&w=2
Oh duh, too much of a hurry, I'll give that a spin.
-Mike
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