linux-kernel - [RFC 0/3] perf tests: Adding precise event attribute test

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Date:	Wed, 19 Dec 2012 16:07:19 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [RFC 0/3] perf tests: Adding precise event attribute test

hi,
as per issues with precise attribute [1], adding simple test to
catch it next time. 

Patch 2 adds sysfs 'precise' attribute containing maximum value
for perf_event_attr::precise_ip.

Patch 3 adds simple test checking the attribute and creating cycle
events with all possible precise values.

I based this on revert (Patch 1) discussed in [1]. I'm not sure
this revert will tak place at the end, but I wanted to get some
feedback on the 'precise' attribute first.

Attached patches:
  1/3 Revert "perf: Require exclude_guest to use PEBS - kernel side enforcement"
  2/3 perf x86: Add precise sysfs attribute
  3/3 perf tests: Add precise event attribute test

thanks,
jirka

[1] http://marc.info/?l=linux-kernel&m=135536724805356&w=2

Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 arch/x86/kernel/cpu/perf_event.c | 38 ++++++++++++++++++++++++--------------
 tools/perf/Makefile              |  1 +
 tools/perf/tests/builtin-test.c  |  4 ++++
 tools/perf/tests/precise.c       | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/perf/tests/tests.h         |  1 +
 5 files changed, 109 insertions(+), 14 deletions(-)
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