Messages in this thread | | | Date | Sun, 28 Jan 2007 15:34:14 +0000 | From | Christoph Hellwig <> | Subject | Re: [PATCH 3/7] barrier: a scalable synchonisation barrier |
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On Sun, Jan 28, 2007 at 04:24:35PM +0100, Ingo Molnar wrote: > > > This barrier thing is constructed so that it will not write in the > > > sync() condition (the hot path) when there are no active lock > > > sections; thus avoiding cacheline bouncing. -- I'm just not sure how > > > this will work out in relation to PI. We might track those in the > > > barrier scope and boost those by the max prio of the blockers. > > > > Is this really needed? We seem to grow new funky locking algorithms > > exponentially, while people already have a hard time understanding the > > existing ones. > > yes, it's needed.
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