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    SubjectRe: [RFC] sched: make callers check lock contention for cond_resched_lock()
    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.

     \ /
      Last update: 2012-05-03 14:41    [W:0.020 / U:27.828 seconds]
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