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// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <internal/xyarray.h>
#include "cpumap.h"
#include "debug.h"
#include "evlist.h"
#include "evsel.h"
#include "parse-events.h"
#include "tests.h"
#include "thread_map.h"
#include "tool_pmu.h"
static int do_test(enum tool_pmu_event ev, bool with_pmu)
{
struct evlist *evlist = evlist__new();
struct evsel *evsel;
struct parse_events_error err;
int ret;
char str[128];
bool found = false;
if (!evlist) {
pr_err("evlist allocation failed\n");
return TEST_FAIL;
}
if (with_pmu)
snprintf(str, sizeof(str), "tool/%s/", tool_pmu__event_to_str(ev));
else
snprintf(str, sizeof(str), "%s", tool_pmu__event_to_str(ev));
parse_events_error__init(&err);
ret = parse_events(evlist, str, &err);
if (ret) {
if (!tool_pmu__event_to_str(ev)) {
ret = TEST_OK;
goto out;
}
pr_debug("FAILED %s:%d failed to parse event '%s', err %d\n",
__FILE__, __LINE__, str, ret);
parse_events_error__print(&err, str);
ret = TEST_FAIL;
goto out;
}
ret = TEST_OK;
if (with_pmu ? (evlist__nr_entries(evlist) != 1)
: (evlist__nr_entries(evlist) < 1)) {
pr_debug("FAILED %s:%d Unexpected number of events for '%s' of %d\n",
__FILE__, __LINE__, str, evlist__nr_entries(evlist));
ret = TEST_FAIL;
goto out;
}
evlist__for_each_entry(evlist, evsel) {
if (perf_pmu__is_tool(evsel->pmu)) {
if (evsel->core.attr.config != ev) {
pr_debug("FAILED %s:%d Unexpected config for '%s', %lld != %d\n",
__FILE__, __LINE__, str, evsel->core.attr.config, ev);
ret = TEST_FAIL;
goto out;
}
found = true;
}
}
if (!found && tool_pmu__event_to_str(ev)) {
pr_debug("FAILED %s:%d Didn't find tool event '%s' in parsed evsels\n",
__FILE__, __LINE__, str);
ret = TEST_FAIL;
}
out:
parse_events_error__exit(&err);
evlist__put(evlist);
return ret;
}
static int test__tool_pmu_without_pmu(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
int i;
tool_pmu__for_each_event(i) {
int ret = do_test(i, /*with_pmu=*/false);
if (ret != TEST_OK)
return ret;
}
return TEST_OK;
}
static int test__tool_pmu_with_pmu(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
int i;
tool_pmu__for_each_event(i) {
int ret = do_test(i, /*with_pmu=*/true);
if (ret != TEST_OK)
return ret;
}
return TEST_OK;
}
static int test__tool_pmu_incremental_open_unwind(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
struct evlist *evlist = evlist__new();
struct parse_events_error err;
struct perf_cpu_map *cpus = NULL;
struct perf_thread_map *threads = NULL;
struct evsel *evsel;
int ret = TEST_FAIL, fd0 = -1;
if (!evlist)
return TEST_FAIL;
parse_events_error__init(&err);
if (parse_events(evlist, "tool/user_time/", &err)) {
parse_events_error__exit(&err);
evlist__put(evlist);
return TEST_FAIL;
}
parse_events_error__exit(&err);
evsel = evlist__first(evlist);
cpus = perf_cpu_map__new("0,1");
threads = thread_map__new_by_tid(getpid());
if (!cpus || !threads)
goto out;
/* Step 1: Open CPU index 0 successfully */
if (evsel__open_per_cpu_and_thread(evsel, cpus, 0, threads) < 0) {
pr_debug("Failed to open CPU index 0\n");
goto out;
}
fd0 = (*(int *)xyarray__entry(evsel->core.fd, 0, 0));
if (fd0 < 0 || fcntl(fd0, F_GETFD) < 0) {
pr_debug("CPU index 0 FD is invalid (%d)\n", fd0);
goto out;
}
/* Step 2: Intentionally trigger failure on CPU index 1 */
evsel->core.attr.sample_period = 1; /* Not supported for tool PMU -> -EINVAL */
if (evsel__open_per_cpu_and_thread(evsel, cpus, 1, threads) >= 0) {
pr_debug("Unexpected success opening CPU index 1 with sample_period=1\n");
goto out;
}
/*
* Step 3: Check that CPU index 0's FD was NOT destroyed by CPU index 1's unwind.
*/
if ((*(int *)xyarray__entry(evsel->core.fd, 0, 0)) != fd0) {
pr_debug("FAILED: CPU 0 FD overwritten: FD(evsel, 0, 0)=%d, expected %d\n",
(*(int *)xyarray__entry(evsel->core.fd, 0, 0)), fd0);
goto out;
}
if (fcntl(fd0, F_GETFD) < 0) {
pr_debug("FAILED: CPU 0 FD %d was closed by error unwind! errno=%d (%s)\n",
fd0, errno, strerror(errno));
goto out;
}
ret = TEST_OK;
out:
evsel__close(evsel);
perf_cpu_map__put(cpus);
perf_thread_map__put(threads);
evlist__put(evlist);
return ret;
}
static struct test_case tests__tool_pmu[] = {
TEST_CASE("Parsing without PMU name", tool_pmu_without_pmu),
TEST_CASE("Parsing with PMU name", tool_pmu_with_pmu),
TEST_CASE("Incremental open error unwind boundary", tool_pmu_incremental_open_unwind),
{ .name = NULL, }
};
struct test_suite suite__tool_pmu = {
.desc = "Tool PMU",
.test_cases = tests__tool_pmu,
};
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