Messages in this thread | | | Date | Mon, 17 Apr 2023 13:46:54 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 2/6] perf: Support branch events logging |
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On Fri, Apr 14, 2023 at 03:47:29PM -0700, Andi Kleen wrote: > > > Yeah, don't do this. There is no guarantee what so ever you'll get any > > of those events in the 0-3 range. > > > The kernel can simply force to 0-3 if LBR is enabled and the feature too. > It's in Kan's patch > > and it isn't particularly complicated.
And what, totally leave 4-7 unused even if those counters were not related to LBR at all? That seems exceedingly daft.
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