linux-kernel - Re: [PATCH] perf pmu: fix alias->snapshot missing initialization bug

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Message-ID: <20160106205327.GD2503@redhat.com>
Date:	Wed, 6 Jan 2016 18:53:27 -0200
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	ak@...ux.intel.com, kan.liang@...el.com, jolsa@...nel.org
Subject: Re: [PATCH] perf pmu: fix alias->snapshot missing initialization bug

Em Wed, Jan 06, 2016 at 07:50:01PM +0100, Stephane Eranian escreveu:
> This patch fixes a bug in __perf_pmu__new_alias() whereby
> the alias->snapshot field was not initialized to false. This
> led to random alias->snapshot value for an alias and
> was breaking some measurements such as:
> 
> $ perf stat -a -e uncore_imc/data_reads/ -I 1000 sleep 100
> 
> Because the event ended up being treated as snapshot mode, when
> it is not.

Thanks, applied.

- Arnaldo
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