linux-kernel - Re: [PATCH 2/5] perf tools: Allow to reset open files counter

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Date:	Wed, 29 Jun 2016 11:05:27 -0500
From:	Nilay Vaish <nilayvaish@...il.com>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 2/5] perf tools: Allow to reset open files counter

On 28 June 2016 at 06:29, Jiri Olsa <jolsa@...nel.org> wrote:
> I hit a bug when running test suite without forking
> each test (-F option):
>
>   $ perf test -F dso
>    8: Test dso data read                                       : Ok
>    9: Test dso data cache                                      : FAILED!
>   10: Test dso data reopen                                     : FAILED!
>
> The reason the session file limit is set just once for
> perf process so we need to reset it for each test,
> otherwise wrong limit is taken into account.
>
> Link: http://lkml.kernel.org/n/tip-bqapag0ljaiwmb7hlkw09zk5@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>


The patch seems fine to me.  I confirmed that we see those failed
tests without this patch and applying it fixes them.

--
Nilay