Messages in this thread | | | Subject | Re: [RFC] sched: make callers check lock contention for cond_resched_lock() | From | Peter Zijlstra <> | Date | Thu, 03 May 2012 14:29:10 +0200 |
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On Thu, 2012-05-03 at 21:22 +0900, Takuya Yoshikawa wrote: > Although the real use case is out of this RFC patch, we are now discussing > a case in which we may hold a spin_lock for long time, ms order, depending > on workload; and in that case, other threads -- VCPU threads -- should be > given higher priority for that problematic lock.
Firstly, if you can hold a lock that long, it shouldn't be a spinlock, secondly why isn't TIF_RESCHED being set if its running that long? That should still make cond_resched_lock() break.
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