linux-kernel - Re: [PATCH 00/25] perf test: Add perf_event

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Message-ID: <20121101203800.GA3911@ghostprotocols.net>
Date:	Thu, 1 Nov 2012 17:38:01 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH 00/25] perf test: Add perf_event_attr tests

Em Tue, Oct 30, 2012 at 11:01:41PM +0100, Jiri Olsa escreveu:
> hi,
> this code tests the link between perf stat/record command line
> options and final perf_event_attr struct values. Also it tests
> the group fd linkage.
> 
> Plus moving test related objects under 'test' directory.

Ok, so I applied this to my local perf/core branch with a few changes,
namely to move 24/25 to after 5/25 so that I could do, for each
subsequent tests:

$ make -j8 -C tools/perf/ O=/home/acme/git/build/perf install
$ perf test -v perf_event_attr

And see if each one passed.

So at the end I changed
/home/acme/libexec/perf-core/tests/attr/base-record flipping
"watermark=0" to "watermark=1" and got:

[root@...dy ~]# perf test perf_event_attr
13: struct perf_event_attr setup                           :FAILED '/home/acme/libexec/perf-core/tests/attr/test-record-count' - match failure
 FAILED!
[root@...dy ~]#

But I wanted it to show _what_ didn't match, so I tried:

[root@...dy ~]# perf test -v perf_event_attr
13: struct perf_event_attr setup                           :
--- start ---
running '/home/acme/libexec/perf-core/tests/attr/test-record-count'
FAILED '/home/acme/libexec/perf-core/tests/attr/test-record-count' - match failure
---- end ----
struct perf_event_attr setup: FAILED!
[root@...dy ~]#

Also is there a strict need for setting PERF_TEST_ATTR? I thought that if it
found the /home/acme/libexec/perf-core/tests/attr/ dirs it would test it, but
haven't dug deep, care to ellaborate here?

Ah, I just pushed perf/core with this patchset, thanks!

- Arnaldo
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