linux-kernel - Re: [PATCH] perf stat: Fix uncore event mixed metric with workload error issue

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Message-ID: <20200428211922.GA874567@tassilo.jf.intel.com>
Date:   Tue, 28 Apr 2020 14:19:22 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Jin Yao <yao.jin@...ux.intel.com>, acme@...nel.org,
        jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH] perf stat: Fix uncore event mixed metric with workload
 error issue

> I wonder this would break some expectations.. would it be
> more safe to detect duration event and bypass it from the
> decission? but maybe the case I'm worried about is not a
> problem at all.. Andi?

Don't see what it would break.

Yes maybe we need to special case duration_time more, but that would
be a much bigger patch.

-Andi