Messages in this thread | | | From | Linus Torvalds <> | Date | Tue, 22 Aug 2017 13:58:59 -0700 | Subject | Re: [PATCH 1/2] sched/wait: Break up long wake list walk |
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On Tue, Aug 22, 2017 at 1:53 PM, Peter Zijlstra <peterz@infradead.org> wrote: > > So _the_ problem with yield() is when you hit this with a RT task it > will busy spin and possibly not allow the task that actually has the > lock to make progress at all.
I thought we had explicitly defined yield() to not do that.
But I guess we could make this yielding behavior depend on a few more heuristics. So do the yield only when there is contention, and when it's a non-RT task.
Linus
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