Messages in this thread |  | | Date | Thu, 16 Apr 2015 17:54:08 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 2/3 v2] futex: avoid double wake up in futex_wake() on -RT |
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On Thu, Apr 16, 2015 at 07:42:55AM -0700, Davidlohr Bueso wrote: > On Thu, 2015-04-16 at 12:16 +0200, Peter Zijlstra wrote: > > But if we decide we want to go do this, I'd propose we reintroduce this > > delayed wake list thing again. > > Given that futexes aren't the only potential users, I definitely agree. > Lemme cleanup the patches and I'll resend. Now, one thing I wonder about > is if we should bother making it a delayed list a plist instead -- as > not all users would consider rt-tasks like futexes do.
plist don't work and should not be used for tasks anymore. I suppose I should go rip them out of futexes too. If you want to make the thing priority aware we should probably abstract the rb-tree from rtmutex.c
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