linux-kernel - Re: [PATCH 1/2] perf session: Add option to copy events when queueing

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Message-ID: <541C3BEF.4010907@gmail.com>
Date:	Fri, 19 Sep 2014 08:21:35 -0600
From:	David Ahern <dsahern@...il.com>
To:	Alexander Yarygin <yarygin@...ux.vnet.ibm.com>
CC:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung.kim@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 1/2] perf session: Add option to copy events when queueing

On 9/19/14, 2:48 AM, Alexander Yarygin wrote:
> It did't work. Turned out that there is at least one event alive after
> finished_round(), usually I get more - ~20. Not sure why, maybe it's
> another problem which should be solved at first?

hmm.... perf_evlist__mmap_consume is not at the event level, but at the 
mmap level -- it assumes everything read has been processed which is not 
true for this case.

David

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