| Date | Mon, 25 Feb 2008 23:10:33 +0100 | From | Pavel Machek <> | Subject | Re: [(RT RFC) PATCH v2 8/9] adjust pi_lock usage in wakeup |
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On Mon 2008-02-25 11:01:18, Gregory Haskins wrote: > From: Peter W.Morreale <pmorreale@novell.com> > > In wakeup_next_waiter(), we take the pi_lock, and then find out whether > we have another waiter to add to the pending owner. We can reduce > contention on the pi_lock for the pending owner if we first obtain the > pointer to the next waiter outside of the pi_lock. > > This patch adds a measureable increase in throughput. > > Signed-off-by: Peter W. Morreale <pmorreale@novell.com>
Missing sign-off.
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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