linux-kernel - Re: [RFC 00/14] perf tests: Check on subtest for user specified test

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Message-ID: <20200525142300.GK14034@kernel.org>
Date:   Mon, 25 May 2020 11:23:00 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [RFC 00/14] perf tests: Check on subtest for user specified test

Em Mon, May 25, 2020 at 12:42:05AM +0200, Jiri Olsa escreveu:
> hi,
> changes for using metric result in another metric seem
> to change lot of core metric code, so it's better we
> have some more tests before we do that.
> 
> Sending as RFC as it's still alive and you guys might
> have some other idea of how to do this.
> 
> Also available in here:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>   perf/fixes

I applied the first three patches, will wait a bit for Ian and others to
have some time to look at it, but one thing I thought was that instead
of having parse_state->fake_pmu as a bool, you could have it as a
pointer to the fake pmu, this way we would do away with that static
thing in the middle of the parsing code.

+static int check_id(const char *id)
+{
+	struct parse_events_error error;
+	struct evlist *evlist;
+	int ret;
+
+	/* Numbers are always valid. */
+	if (is_number(id))
+               return 0;
+
+	evlist = evlist__new();
+	if (!evlist)
+               return -1;
+
+	memset(&error, 0, sizeof(error));
+       ret = parse_events_fake(evlist, id, &error);
+       if (ret) {
+               pr_debug("str        : %s\n", error.str);
+               pr_debug("help       : %s\n", error.help);
+               pr_debug("first_str  : %s\n", error.first_str);
+               pr_debug("first_help : %s\n", error.first_help);
+       }
+
+       evlist__delete(evlist);
+       free(error.str);
+	free(error.help);
+       free(error.first_str);
+       free(error.first_help);
+	return ret;
+}


Would read:

	struct perf_pmu fake = { 0, };
	.
	.
	.
	ret = parse_events_fake_pmu(evlist, id, &fake, &error);
	.
	.
	.


That also renames parse_events_fake() to parse_events_fake_pmu().
 
> jirka
> 
> 
> ---
> Jiri Olsa (14):
>       perf tests: Check on subtest for user specified test
>       perf tools: Do not pass avg to generic_metric
>       perf tools: Add struct parse_events_state pointer to scanner
>       perf tools: Add fake pmu support
>       perf tools: Add parse_events_fake interface
>       perf tests: Add another pmu-events tests
>       perf tools: Factor out parse_groups function
>       perf tools: Add metricgroup__parse_groups_test function
>       perf tools: Add fake_pmu to parse_events function
>       perf tools: Add map to parse_events function
>       perf tools: Factor out prepare_metric function
>       perf tools: Add test_generic_metric function
>       perf tests: Add parse metric test for ipc metric
>       perf tests: Add parse metric test for frontend metric
> 
>  tools/perf/tests/Build          |   1 +
>  tools/perf/tests/builtin-test.c |  38 ++++++++++++++++++++++------
>  tools/perf/tests/parse-metric.c | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  tools/perf/tests/pmu-events.c   | 120 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  tools/perf/tests/tests.h        |   1 +
>  tools/perf/util/metricgroup.c   |  53 ++++++++++++++++++++++++++++++---------
>  tools/perf/util/metricgroup.h   |   9 +++++++
>  tools/perf/util/parse-events.c  |  73 ++++++++++++++++++++++++++++++++++++++---------------
>  tools/perf/util/parse-events.h  |   6 ++++-
>  tools/perf/util/parse-events.l  |  16 +++++++-----
>  tools/perf/util/parse-events.y  |  37 +++++++++++++++++++++++++--
>  tools/perf/util/stat-shadow.c   |  77 ++++++++++++++++++++++++++++++++++++--------------------
>  tools/perf/util/stat.h          |   3 +++
>  13 files changed, 521 insertions(+), 76 deletions(-)
>  create mode 100644 tools/perf/tests/parse-metric.c
> 

-- 

- Arnaldo