diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/tests/expand-cgroup.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/tools/perf/tests/expand-cgroup.c b/tools/perf/tests/expand-cgroup.c new file mode 100644 index 000000000..51fb5f34c --- /dev/null +++ b/tools/perf/tests/expand-cgroup.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "debug.h" +#include "evlist.h" +#include "cgroup.h" +#include "rblist.h" +#include "metricgroup.h" +#include "parse-events.h" +#include "pmu-events/pmu-events.h" +#include "pfm.h" +#include <subcmd/parse-options.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +static int test_expand_events(struct evlist *evlist, + struct rblist *metric_events) +{ + int i, ret = TEST_FAIL; + int nr_events; + bool was_group_event; + int nr_members; /* for the first evsel only */ + const char cgrp_str[] = "A,B,C"; + const char *cgrp_name[] = { "A", "B", "C" }; + int nr_cgrps = ARRAY_SIZE(cgrp_name); + char **ev_name; + struct evsel *evsel; + + TEST_ASSERT_VAL("evlist is empty", !evlist__empty(evlist)); + + nr_events = evlist->core.nr_entries; + ev_name = calloc(nr_events, sizeof(*ev_name)); + if (ev_name == NULL) { + pr_debug("memory allocation failure\n"); + return TEST_FAIL; + } + i = 0; + evlist__for_each_entry(evlist, evsel) { + ev_name[i] = strdup(evsel->name); + if (ev_name[i] == NULL) { + pr_debug("memory allocation failure\n"); + goto out; + } + i++; + } + /* remember grouping info */ + was_group_event = evsel__is_group_event(evlist__first(evlist)); + nr_members = evlist__first(evlist)->core.nr_members; + + ret = evlist__expand_cgroup(evlist, cgrp_str, metric_events, false); + if (ret < 0) { + pr_debug("failed to expand events for cgroups\n"); + goto out; + } + + ret = TEST_FAIL; + if (evlist->core.nr_entries != nr_events * nr_cgrps) { + pr_debug("event count doesn't match\n"); + goto out; + } + + i = 0; + evlist__for_each_entry(evlist, evsel) { + if (strcmp(evsel->name, ev_name[i % nr_events])) { + pr_debug("event name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->name, ev_name[i % nr_events]); + goto out; + } + if (strcmp(evsel->cgrp->name, cgrp_name[i / nr_events])) { + pr_debug("cgroup name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->cgrp->name, cgrp_name[i / nr_events]); + goto out; + } + + if ((i % nr_events) == 0) { + if (evsel__is_group_event(evsel) != was_group_event) { + pr_debug("event group doesn't match: got %s, expect %s\n", + evsel__is_group_event(evsel) ? "true" : "false", + was_group_event ? "true" : "false"); + goto out; + } + if (evsel->core.nr_members != nr_members) { + pr_debug("event group member doesn't match: %d vs %d\n", + evsel->core.nr_members, nr_members); + goto out; + } + } + i++; + } + ret = TEST_OK; + +out: for (i = 0; i < nr_events; i++) + free(ev_name[i]); + free(ev_name); + return ret; +} + +static int expand_default_events(void) +{ + int ret; + struct rblist metric_events; + struct evlist *evlist = evlist__new_default(); + + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); + evlist__delete(evlist); + return ret; +} + +static int expand_group_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + struct parse_events_error err; + const char event_str[] = "{cycles,instructions}"; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + parse_events_error__init(&err); + ret = parse_events(evlist, event_str, &err); + if (ret < 0) { + pr_debug("failed to parse event '%s', err %d, str '%s'\n", + event_str, ret, err.str); + parse_events_error__print(&err, event_str); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + parse_events_error__exit(&err); + evlist__delete(evlist); + return ret; +} + +static int expand_libpfm_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char event_str[] = "CYCLES"; + struct option opt = { + .value = &evlist, + }; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + ret = parse_libpfm_events_option(&opt, event_str, 0); + if (ret < 0) { + pr_debug("failed to parse libpfm event '%s', err %d\n", + event_str, ret); + goto out; + } + if (evlist__empty(evlist)) { + pr_debug("libpfm was not enabled\n"); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + evlist__delete(evlist); + return ret; +} + +static int expand_metric_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char metric_str[] = "CPI"; + const struct pmu_events_table *pme_test; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + pme_test = find_core_events_table("testarch", "testcpu"); + ret = metricgroup__parse_groups_test(evlist, pme_test, metric_str, + false, false, &metric_events); + if (ret < 0) { + pr_debug("failed to parse '%s' metric\n", metric_str); + goto out; + } + + ret = test_expand_events(evlist, &metric_events); + +out: + metricgroup__rblist_exit(&metric_events); + evlist__delete(evlist); + return ret; +} + +static int test__expand_cgroup_events(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret; + + ret = expand_default_events(); + TEST_ASSERT_EQUAL("failed to expand default events", ret, 0); + + ret = expand_group_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_libpfm_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_metric_events(); + TEST_ASSERT_EQUAL("failed to expand metric events", ret, 0); + + return ret; +} + +DEFINE_SUITE("Event expansion for cgroups", expand_cgroup_events); |