Messages in this thread | | | Date | Wed, 26 May 2010 12:08:48 +0200 | From | Frederic Weisbecker <> | Subject | Re: [PATCH 0/4] convert perf to local64_t |
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On Fri, May 21, 2010 at 03:42:05PM +0200, Peter Zijlstra wrote: > These patches introduce local64_t. > > Since perf_event:count is only modified cross-cpu when child-counters > feed back their changes on exit, and we can use a secondary variable > for that, we can convert perf to use local64_t instead of atomic64_t > and use instructions without buslock semantics. > > The local64_t implementation uses local_t for 64 bits, since local_t is > of type long, for 32 bit it falls back to atomic64_t. Architectures can > provide their own implementation as usual.
It seems nobody disagrees with it. Can we give it a try?
Thanks.
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