libperf: Add perf_evsel tests

# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)

TESTS = test-cpumap test-threadmap test-evlist

TESTS = test-cpumap test-threadmap test-evlist test-evsel

TESTS_SO := $(addsuffix -so,$(TESTS))

TESTS_A  := $(addsuffix -a,$(TESTS))

// SPDX-License-Identifier: GPL-2.0

#include <linux/perf_event.h>

#include <perf/cpumap.h>

#include <perf/threadmap.h>

#include <perf/evsel.h>

#include <internal/tests.h>

static int test_stat_cpu(void)

{

	struct perf_cpu_map *cpus;

	struct perf_evsel *evsel;

	struct perf_event_attr attr = {

		.type	= PERF_TYPE_SOFTWARE,

		.config	= PERF_COUNT_SW_CPU_CLOCK,

	};

	int err, cpu, tmp;

	cpus = perf_cpu_map__new(NULL);

	__T("failed to create cpus", cpus);

	evsel = perf_evsel__new(&attr);

	__T("failed to create evsel", evsel);

	err = perf_evsel__open(evsel, cpus, NULL);

	__T("failed to open evsel", err == 0);

	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_evsel__close(evsel);

	perf_evsel__delete(evsel);

	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_evsel *evsel;

	struct perf_event_attr attr = {

		.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);

	evsel = perf_evsel__new(&attr);

	__T("failed to create evsel", evsel);

	err = perf_evsel__open(evsel, NULL, threads);

	__T("failed to open evsel", err == 0);

	perf_evsel__read(evsel, 0, 0, &counts);

	__T("failed to read value for evsel", counts.val != 0);

	perf_evsel__close(evsel);

	perf_evsel__delete(evsel);

	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;

}