linux-kernel - Re: [PATCH] perf c2c: Fix remote HITM detection for Skylake

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Message-ID: <20170824214507.GN2482@two.firstfloor.org>
Date:   Thu, 24 Aug 2017 14:45:07 -0700
From:   Andi Kleen <andi@...stfloor.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Joe Mario <jmario@...hat.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH] perf c2c: Fix remote HITM detection for Skylake

On Thu, Aug 24, 2017 at 10:57:32AM +0200, Jiri Olsa wrote:
> Skylake introduced new mem_remote bit in union perf_mem_data_src [1].
> It applies to any other memory level to express Remote unknown level,
> as is reported by Skylake.
> 
> Adding this extra check to c2c_decode_stats to properly decode
> remote HITMs on Skylake.

Acked-by: Andi Kleen <ak@...ux.intel.com>

-Andi