Commit 8ded5425 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarJiri Olsa <jolsa@kernel.org>
Tested-by: default avatarArnaldo 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 43d69763

tools/perf/lib/tests/Makefile

+1 −1
Original line number Diff line number Diff line 
# 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))

tools/perf/lib/tests/test-evlist.c

0 → 100644
+123 −0
Original line number Diff line number Diff line 
// 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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