linux-kernel - [tip:perf/core] perf test: Add automated tests for pmu sysfs translated events

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Message-ID: <tip-3f3a20648797c3ff49c6ebfe10747ef0acd37c50@git.kernel.org>
Date:	Wed, 24 Oct 2012 03:09:33 -0700
From:	tip-bot for Jiri Olsa <jolsa@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, eranian@...gle.com, paulus@...ba.org,
	hpa@...or.com, mingo@...nel.org, a.p.zijlstra@...llo.nl,
	torvalds@...ux-foundation.org, acme@...stprotocols.net,
	jolsa@...hat.com, fweisbec@...il.com, akpm@...ux-foundation.org,
	tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com
Subject: [tip:perf/core] perf test:
  Add automated tests for pmu sysfs translated events

Commit-ID:  3f3a20648797c3ff49c6ebfe10747ef0acd37c50
Gitweb:     http://git.kernel.org/tip/3f3a20648797c3ff49c6ebfe10747ef0acd37c50
Author:     Jiri Olsa <jolsa@...hat.com>
AuthorDate: Wed, 10 Oct 2012 14:53:18 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 24 Oct 2012 10:41:27 +0200

perf test: Add automated tests for pmu sysfs translated events

Add automated tests for all events found under PMU/events
directory. Tested events are in the 'cpu/event=xxx/u' format,
where 'xxx' is substituted by every event found.

The 'event=xxx' term is translated to the cpu specific term.
We only check that the event is created (not the real config
numbers) and that the modifier is properly set.

Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1349873598-12583-9-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 tools/perf/util/parse-events-test.c |   68 +++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-events-test.c b/tools/perf/util/parse-events-test.c
index 516ecd9..b49c2ee 100644
--- a/tools/perf/util/parse-events-test.c
+++ b/tools/perf/util/parse-events-test.c
@@ -443,6 +443,23 @@ static int test__checkevent_pmu_name(struct perf_evlist *evlist)
 	return 0;
 }
 
+static int test__checkevent_pmu_events(struct perf_evlist *evlist)
+{
+	struct perf_evsel *evsel;
+
+	evsel = list_entry(evlist->entries.next, struct perf_evsel, node);
+	TEST_ASSERT_VAL("wrong number of entries", 1 == 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);
+
+	return 0;
+}
+
 static int test__checkterms_simple(struct list_head *terms)
 {
 	struct parse_events__term *term;
@@ -1024,6 +1041,51 @@ static int test_pmu(void)
 	return !ret;
 }
 
+static int test_pmu_events(void)
+{
+	struct stat st;
+	char path[PATH_MAX];
+	struct dirent *ent;
+	DIR *dir;
+	int ret;
+
+	snprintf(path, PATH_MAX, "%s/bus/event_source/devices/cpu/events/",
+		 sysfs_find_mountpoint());
+
+	ret = stat(path, &st);
+	if (ret) {
+		pr_debug("ommiting PMU cpu events tests\n");
+		return 0;
+	}
+
+	dir = opendir(path);
+	if (!dir) {
+		pr_debug("can't open pmu event dir");
+		return -1;
+	}
+
+	while (!ret && (ent = readdir(dir))) {
+#define MAX_NAME 100
+		struct test__event_st e;
+		char name[MAX_NAME];
+
+		if (!strcmp(ent->d_name, ".") ||
+		    !strcmp(ent->d_name, ".."))
+			continue;
+
+		snprintf(name, MAX_NAME, "cpu/event=%s/u", ent->d_name);
+
+		e.name  = name;
+		e.check = test__checkevent_pmu_events;
+
+		ret = test_event(&e);
+#undef MAX_NAME
+	}
+
+	closedir(dir);
+	return ret;
+}
+
 int parse_events__test(void)
 {
 	int ret1, ret2 = 0;
@@ -1040,6 +1102,12 @@ do {							\
 	if (test_pmu())
 		TEST_EVENTS(test__events_pmu);
 
+	if (test_pmu()) {
+		int ret = test_pmu_events();
+		if (ret)
+			return ret;
+	}
+
 	ret1 = test_terms(test__terms, ARRAY_SIZE(test__terms));
 	if (!ret2)
 		ret2 = ret1;
--
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