linux-kernel - RE: [PATCH V6 0/3] perf tools: pmu event new style format fix

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Date:	Thu, 2 Oct 2014 17:33:28 +0000
From:	"Liang, Kan" <kan.liang@...el.com>
To:	Jiri Olsa <jolsa@...hat.com>
CC:	"acme@...nel.org" <acme@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: RE: [PATCH V6 0/3] perf tools: pmu event new style format fix



> 
> On Thu, Sep 11, 2014 at 03:08:56PM -0400, kan.liang@...el.com wrote:
> > From: Kan Liang <kan.liang@...el.com>
> >
> > There are two types of pmu event stytle formats, "pmu_event_name"
> > or "cpu/pmu_event_name/". However, there is a bug on supporting these
> > two formats, especially when they mixed with other perf events.
> > The patch set intends to fix this issue.
> >
> > The patch set has been tested on my haswell.
> > Here is the test script I used for this issue.
> > (Note: please make sure that your test system supports TSX and
> > L1-dcache-loads events. Otherwise, you may want to change the events
> > to other pmu events.)
> 
> any chance changing this script to work for everyone?
> and make it part of theautomated tests suite?
> 
> also how about something like in the attached change

It cannot trigger the issue, since current perf will automatically add cpu//  for pmu event.
We have to test at least two events with different style.
How about the change as below?

--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -457,6 +457,36 @@ static int test__checkevent_pmu_events(struct perf_evlist *evlist)
        return 0;
 }

+
+static int test__checkevent_pmu_events_mix(struct perf_evlist *evlist)
+{
+       struct perf_evsel *evsel = perf_evlist__first(evlist);
+
+       /* pmu-event:u */
+       TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->nr_entries);
+       TEST_ASSERT_VAL("wrong exclude_user",
+                       !evsel->attr.exclude_user);
+       TEST_ASSERT_VAL("wrong exclude_kernel",
+                       evsel->attr.exclude_kernel);
+       TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
+       TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
+       TEST_ASSERT_VAL("wrong pinned", !evsel->attr.pinned);
+
+       /* cpu/pmu-event/u*/
+       evsel = perf_evsel__next(evsel);
+       TEST_ASSERT_VAL("wrong number of entries", 2 == evlist->nr_entries);
+       TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->attr.type);
+       TEST_ASSERT_VAL("wrong exclude_user",
+                       !evsel->attr.exclude_user);
+       TEST_ASSERT_VAL("wrong exclude_kernel",
+                       evsel->attr.exclude_kernel);
+       TEST_ASSERT_VAL("wrong exclude_hv", evsel->attr.exclude_hv);
+       TEST_ASSERT_VAL("wrong precise_ip", !evsel->attr.precise_ip);
+       TEST_ASSERT_VAL("wrong pinned", !evsel->attr.pinned);
+
+       return 0;
+}
+
 static int test__checkterms_simple(struct list_head *terms)
 {
        struct parse_events_term *term;
@@ -1554,6 +1584,12 @@ static int test_pmu_events(void)
                e.check = test__checkevent_pmu_events;

                ret = test_event(&e);
+               if (ret)
+                       break;
+               snprintf(name, MAX_NAME, "%s:u,cpu/event=%s/u", ent->d_name, ent->d_name);
+               e.name  = name;
+               e.check = test__checkevent_pmu_events_mix;
+               ret = test_event(&e);
 #undef MAX_NAME
        }


Thanks,
Kan


> 
> jirka
> 
> 
> ---
> diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-
> events.c index 5941927a4b7f..2b7c48474761 100644
> --- a/tools/perf/tests/parse-events.c
> +++ b/tools/perf/tests/parse-events.c
> @@ -1554,6 +1554,15 @@ static int test_pmu_events(void)
>  		e.check = test__checkevent_pmu_events;
> 
>  		ret = test_event(&e);
> +		if (ret)
> +			break;
> +
> +		snprintf(name, MAX_NAME, "event=%s", ent->d_name);
> +
> +		e.name  = name;
> +		e.check = test__checkevent_pmu_events;
> +
> +		ret = test_event(&e);
>  #undef MAX_NAME
>  	}
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