linux-kernel - Re: [PATCH v2 0/4] perf tool: Skip invalid hybrid PMU

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Date:   Mon, 12 Jul 2021 15:08:02 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Jin Yao <yao.jin@...ux.intel.com>, jolsa@...nel.org,
        peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        ak@...ux.intel.com, kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v2 0/4] perf tool: Skip invalid hybrid PMU

Em Sun, Jul 11, 2021 at 05:52:48PM +0200, Jiri Olsa escreveu:
> On Thu, Jul 08, 2021 at 09:36:57AM +0800, Jin Yao wrote:
> > On hybrid platform, such as Alderlake, if atom CPUs are offlined,
> > the kernel still exports the sysfs path '/sys/devices/cpu_atom/' for
> > 'cpu_atom' pmu but the file '/sys/devices/cpu_atom/cpus' is empty,
> > which indicates this is an invalid pmu. So we need to check and skip
> > the invalid hybrid pmu.
> > 
> > Also we need to update some perf test cases for core-only system.
> > 
> > Jin Yao (4):
> >   perf pmu: Skip invalid hybrid pmu
> >   perf tests: Fix 'Parse event definition strings' on core-only system
> >   perf tests: Fix 'Roundtrip evsel->name' on core-only system
> >   perf tests: Fix 'Convert perf time to TSC' on core-only system
> 
> Acked-by: Jiri Olsa <jolsa@...hat.com>

Thanks, applied to perf/urgent.

- Arnaldo