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    SubjectRe: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch
    Andrea Arcangeli <andrea@suse.de> wrote:
    >
    > if you're scared that there are too many cond_resched (I'm not scared
    > and people should enable them anyways if they make a difference, they
    > still should be less than the number of spin_unlocks with preempt
    > enabled), then you should add a cond_resched_costly and add a config
    > option that turns it off.

    None of these approaches improves worst-case latency at all on SMP. If
    we're not going to address the SMP problem we could just make it UP-only,
    in which case increased locking costs are a non-issue.

    I'd prefer that we find a solution for SMP too though.
    -
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