Messages in this thread |  | | | Subject | Re: [RFC][PATCH 08/11] perf, x86: Implement simple LBR support | | From | Peter Zijlstra <> | | Date | Thu, 04 Mar 2010 21:23:25 +0100 |
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On Thu, 2010-03-04 at 19:18 +0100, Peter Zijlstra wrote: > What is currently implemented is that we loose history at the point a > new task schedules in an LBR using event. > This also matches CPU errata AX14, AJ52 and AAK109 which states that a task switch may produce faulty LBR state, so clearing history after a task switch seems the best thing to do.
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