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Subject[tip:perf/core] libperf: Add perf_evlist test
Commit-ID:  8ded5425fa71e2f7f60eb59d64ecdba80582b641
Gitweb: https://git.kernel.org/tip/8ded5425fa71e2f7f60eb59d64ecdba80582b641
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Sun, 21 Jul 2019 13:25:02 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 29 Jul 2019 18:34:47 -0300

libperf: Add perf_evlist test

Add 2 simple perf_evlist tests to test counters reading interface
through the struct evlist object.

Committer testing:

# make -C tools/perf/lib tests
make: Entering directory '/home/acme/git/perf/tools/perf/lib'
LINK test-cpumap-a
LINK test-threadmap-a
LINK test-evlist-a
LINK test-cpumap-so
LINK test-threadmap-so
LINK test-evlist-so
running static:
- running test-cpumap.c...OK
- running test-threadmap.c...OK
- running test-evlist.c...OK
running dynamic:
- running test-cpumap.c...OK
- running test-threadmap.c...OK
- running test-evlist.c...OK
make: Leaving directory '/home/acme/git/perf/tools/perf/lib'
#

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-76-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/lib/tests/Makefile | 2 +-
tools/perf/lib/tests/test-evlist.c | 123 +++++++++++++++++++++++++++++++++++++
2 files changed, 124 insertions(+), 1 deletion(-)

diff --git a/tools/perf/lib/tests/Makefile b/tools/perf/lib/tests/Makefile
index 5dc84003e3a7..e66ed090f08e 100644
--- a/tools/perf/lib/tests/Makefile
+++ b/tools/perf/lib/tests/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)

-TESTS = test-cpumap test-threadmap
+TESTS = test-cpumap test-threadmap test-evlist

TESTS_SO := $(addsuffix -so,$(TESTS))
TESTS_A := $(addsuffix -a,$(TESTS))
diff --git a/tools/perf/lib/tests/test-evlist.c b/tools/perf/lib/tests/test-evlist.c
new file mode 100644
index 000000000000..f24c531afcb6
--- /dev/null
+++ b/tools/perf/lib/tests/test-evlist.c
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/perf_event.h>
+#include <perf/cpumap.h>
+#include <perf/threadmap.h>
+#include <perf/evlist.h>
+#include <perf/evsel.h>
+#include <internal/tests.h>
+
+static int test_stat_cpu(void)
+{
+ struct perf_cpu_map *cpus;
+ struct perf_evlist *evlist;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr1 = {
+ .type = PERF_TYPE_SOFTWARE,
+ .config = PERF_COUNT_SW_CPU_CLOCK,
+ };
+ struct perf_event_attr attr2 = {
+ .type = PERF_TYPE_SOFTWARE,
+ .config = PERF_COUNT_SW_TASK_CLOCK,
+ };
+ int err, cpu, tmp;
+
+ cpus = perf_cpu_map__new(NULL);
+ __T("failed to create cpus", cpus);
+
+ evlist = perf_evlist__new();
+ __T("failed to create evlist", evlist);
+
+ evsel = perf_evsel__new(&attr1);
+ __T("failed to create evsel1", evsel);
+
+ perf_evlist__add(evlist, evsel);
+
+ evsel = perf_evsel__new(&attr2);
+ __T("failed to create evsel2", evsel);
+
+ perf_evlist__add(evlist, evsel);
+
+ perf_evlist__set_maps(evlist, cpus, NULL);
+
+ err = perf_evlist__open(evlist);
+ __T("failed to open evsel", err == 0);
+
+ perf_evlist__for_each_evsel(evlist, evsel) {
+ cpus = perf_evsel__cpus(evsel);
+
+ perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
+ struct perf_counts_values counts = { .val = 0 };
+
+ perf_evsel__read(evsel, cpu, 0, &counts);
+ __T("failed to read value for evsel", counts.val != 0);
+ }
+ }
+
+ perf_evlist__close(evlist);
+ perf_evlist__delete(evlist);
+
+ perf_cpu_map__put(cpus);
+ return 0;
+}
+
+static int test_stat_thread(void)
+{
+ struct perf_counts_values counts = { .val = 0 };
+ struct perf_thread_map *threads;
+ struct perf_evlist *evlist;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr1 = {
+ .type = PERF_TYPE_SOFTWARE,
+ .config = PERF_COUNT_SW_CPU_CLOCK,
+ };
+ struct perf_event_attr attr2 = {
+ .type = PERF_TYPE_SOFTWARE,
+ .config = PERF_COUNT_SW_TASK_CLOCK,
+ };
+ int err;
+
+ threads = perf_thread_map__new_dummy();
+ __T("failed to create threads", threads);
+
+ perf_thread_map__set_pid(threads, 0, 0);
+
+ evlist = perf_evlist__new();
+ __T("failed to create evlist", evlist);
+
+ evsel = perf_evsel__new(&attr1);
+ __T("failed to create evsel1", evsel);
+
+ perf_evlist__add(evlist, evsel);
+
+ evsel = perf_evsel__new(&attr2);
+ __T("failed to create evsel2", evsel);
+
+ perf_evlist__add(evlist, evsel);
+
+ perf_evlist__set_maps(evlist, NULL, threads);
+
+ err = perf_evlist__open(evlist);
+ __T("failed to open evsel", err == 0);
+
+ perf_evlist__for_each_evsel(evlist, evsel) {
+ perf_evsel__read(evsel, 0, 0, &counts);
+ __T("failed to read value for evsel", counts.val != 0);
+ }
+
+ perf_evlist__close(evlist);
+ perf_evlist__delete(evlist);
+
+ perf_thread_map__put(threads);
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ __T_START;
+
+ test_stat_cpu();
+ test_stat_thread();
+
+ __T_OK;
+ return 0;
+}
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