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SubjectRe: [PATCH [RT] 08/14] add a loop counter based timeout mechanism
On Fri, Feb 22, 2008 at 11:19 AM, Bill Huey (hui) <bill.huey@gmail.com> wrote:
> Yeah, I'm not very keen on having a constant there without some
> contention instrumentation to see how long the spins are. It would be
> better to just let it run until either task->on_cpu is off or checking
> if the "current" in no longer matches the mutex owner for the runqueue
> in question. At that point, you know the thread isn't running.
> Spinning on something like that is just a waste of time. It's for that
> reason that doing in the spin outside of a preempt critical section
> isn't really needed

Excuse me, I meant to say "...isn't a problem".

bill


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