--- /dev/null
+#include <linux/compiler.h>
+#include <string.h>
+#include "tests.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "util.h"
+#include "debug.h"
+#include "thread_map.h"
+#include "target.h"
+
+static int attach__enable_on_exec(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+ struct target target = {
+ .uid = UINT_MAX,
+ };
+ const char *argv[] = { "true", NULL, };
+ char sbuf[STRERR_BUFSIZE];
+ int err;
+
+ pr_debug("attaching to spawned child, enable on exec\n");
+
+ err = perf_evlist__create_maps(evlist, &target);
+ if (err < 0) {
+ pr_debug("Not enough memory to create thread/cpu maps\n");
+ return err;
+ }
+
+ err = perf_evlist__prepare_workload(evlist, &target, argv, false, NULL);
+ if (err < 0) {
+ pr_debug("Couldn't run the workload!\n");
+ return err;
+ }
+
+ evsel->attr.enable_on_exec = 1;
+
+ err = perf_evlist__open(evlist);
+ if (err < 0) {
+ pr_debug("perf_evlist__open: %s\n",
+ strerror_r(errno, sbuf, sizeof(sbuf)));
+ return err;
+ }
+
+ return perf_evlist__start_workload(evlist) == 1 ? TEST_OK : TEST_FAIL;
+}
+
+static int detach__enable_on_exec(struct perf_evlist *evlist)
+{
+ waitpid(evlist->workload.pid, NULL, 0);
+ return 0;
+}
+
+static int attach__current_disabled(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+ struct thread_map *threads;
+ int err;
+
+ pr_debug("attaching to current thread as disabled\n");
+
+ threads = thread_map__new(-1, getpid(), UINT_MAX);
+ if (threads == NULL) {
+ pr_debug("thread_map__new\n");
+ return -1;
+ }
+
+ evsel->attr.disabled = 1;
+
+ err = perf_evsel__open_per_thread(evsel, threads);
+ if (err) {
+ pr_debug("Failed to open event cpu-clock:u\n");
+ return err;
+ }
+
+ thread_map__put(threads);
+ return perf_evsel__enable(evsel) == 0 ? TEST_OK : TEST_FAIL;
+}
+
+static int attach__current_enabled(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+ struct thread_map *threads;
+ int err;
+
+ pr_debug("attaching to current thread as enabled\n");
+
+ threads = thread_map__new(-1, getpid(), UINT_MAX);
+ if (threads == NULL) {
+ pr_debug("failed to call thread_map__new\n");
+ return -1;
+ }
+
+ err = perf_evsel__open_per_thread(evsel, threads);
+
+ thread_map__put(threads);
+ return err == 0 ? TEST_OK : TEST_FAIL;
+}
+
+static int detach__disable(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+
+ return perf_evsel__enable(evsel);
+}
+
+static int attach__cpu_disabled(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+ struct cpu_map *cpus;
+ int err;
+
+ pr_debug("attaching to CPU 0 as enabled\n");
+
+ cpus = cpu_map__new("0");
+ if (cpus == NULL) {
+ pr_debug("failed to call cpu_map__new\n");
+ return -1;
+ }
+
+ evsel->attr.disabled = 1;
+
+ err = perf_evsel__open_per_cpu(evsel, cpus);
+ if (err) {
+ if (err == -EACCES)
+ return TEST_SKIP;
+
+ pr_debug("Failed to open event cpu-clock:u\n");
+ return err;
+ }
+
+ cpu_map__put(cpus);
+ return perf_evsel__enable(evsel);
+}
+
+static int attach__cpu_enabled(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evlist__last(evlist);
+ struct cpu_map *cpus;
+ int err;
+
+ pr_debug("attaching to CPU 0 as enabled\n");
+
+ cpus = cpu_map__new("0");
+ if (cpus == NULL) {
+ pr_debug("failed to call cpu_map__new\n");
+ return -1;
+ }
+
+ err = perf_evsel__open_per_cpu(evsel, cpus);
+ if (err == -EACCES)
+ return TEST_SKIP;
+
+ cpu_map__put(cpus);
+ return err ? TEST_FAIL : TEST_OK;
+}
+
+static int test_times(int (attach)(struct perf_evlist *),
+ int (detach)(struct perf_evlist *))
+{
+ struct perf_counts_values count;
+ struct perf_evlist *evlist = NULL;
+ struct perf_evsel *evsel;
+ int err = -1, i;
+
+ evlist = perf_evlist__new();
+ if (!evlist) {
+ pr_debug("failed to create event list\n");
+ goto out_err;
+ }
+
+ err = parse_events(evlist, "cpu-clock:u", NULL);
+ if (err) {
+ pr_debug("failed to parse event cpu-clock:u\n");
+ goto out_err;
+ }
+
+ evsel = perf_evlist__last(evlist);
+ evsel->attr.read_format |=
+ PERF_FORMAT_TOTAL_TIME_ENABLED |
+ PERF_FORMAT_TOTAL_TIME_RUNNING;
+
+ err = attach(evlist);
+ if (err == TEST_SKIP) {
+ pr_debug(" SKIP : not enough rights\n");
+ return err;
+ }
+
+ TEST_ASSERT_VAL("failed to attach", !err);
+
+ for (i = 0; i < 100000000; i++) { }
+
+ TEST_ASSERT_VAL("failed to detach", !detach(evlist));
+
+ perf_evsel__read(evsel, 0, 0, &count);
+
+ err = !(count.ena == count.run);
+
+ pr_debug(" %s: ena %" PRIu64", run %" PRIu64"\n",
+ !err ? "OK " : "FAILED",
+ count.ena, count.run);
+
+out_err:
+ if (evlist)
+ perf_evlist__delete(evlist);
+ return !err ? TEST_OK : TEST_FAIL;
+}
+
+/*
+ * This test creates software event 'cpu-clock'
+ * attaches it in several ways (explained below)
+ * and checks that enabled and running times
+ * match.
+ */
+int test__event_times(int subtest __maybe_unused)
+{
+ int err, ret = 0;
+
+#define _T(attach, detach) \
+ err = test_times(attach, detach); \
+ if (err && (ret == TEST_OK || ret == TEST_SKIP)) \
+ ret = err;
+
+ /* attach on newly spawned process after exec */
+ _T(attach__enable_on_exec, detach__enable_on_exec)
+ /* attach on current process as enabled */
+ _T(attach__current_enabled, detach__disable)
+ /* attach on current process as disabled */
+ _T(attach__current_disabled, detach__disable)
+ /* attach on cpu as disabled */
+ _T(attach__cpu_disabled, detach__disable)
+ /* attach on cpu as enabled */
+ _T(attach__cpu_enabled, detach__disable)
+
+#undef _T
+ return ret;
+}
projects / openwrt / staging / blogic.git / commitdiff