Messages in this thread | | | Subject | Re: [PATCH -tip] perf, x86: Make a second write to performance counter if needed | From | Peter Zijlstra <> | Date | Mon, 07 Jun 2010 11:48:05 +0200 |
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On Thu, 2010-06-03 at 01:23 +0400, Cyrill Gorcunov wrote: > On Netburst PMU we need a second write to a performance counter > due to cpu erratum. > > A simple flag test instead of alternative instructions was choosen > because wrmsrl is already a macro and if virtualization is turned > on will need an additional wrapper call which is more expencise. > > nb: we should propably switch to jump-labels as only this facility > reach the mainline.
OK. Thanks Cyrill.
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