1// SPDX-License-Identifier: GPL-2.0
  2#include "tests.h"
  3#include "debug.h"
  4#include "evlist.h"
  5#include "cgroup.h"
  6#include "rblist.h"
  7#include "metricgroup.h"
  8#include "parse-events.h"
  9#include "pmu-events/pmu-events.h"
 10#include "pfm.h"
 11#include <subcmd/parse-options.h>
 12#include <stdio.h>
 13#include <stdlib.h>
 14#include <string.h>
 15
 16static int test_expand_events(struct evlist *evlist,
 17			      struct rblist *metric_events)
 18{
 19	int i, ret = TEST_FAIL;
 20	int nr_events;
 21	bool was_group_event;
 22	int nr_members;  /* for the first evsel only */
 23	const char cgrp_str[] = "A,B,C";
 24	const char *cgrp_name[] = { "A", "B", "C" };
 25	int nr_cgrps = ARRAY_SIZE(cgrp_name);
 26	char **ev_name;
 27	struct evsel *evsel;
 28
 29	TEST_ASSERT_VAL("evlist is empty", !evlist__empty(evlist));
 30
 31	nr_events = evlist->core.nr_entries;
 32	ev_name = calloc(nr_events, sizeof(*ev_name));
 33	if (ev_name == NULL) {
 34		pr_debug("memory allocation failure\n");
 35		return TEST_FAIL;
 36	}
 37	i = 0;
 38	evlist__for_each_entry(evlist, evsel) {
 39		ev_name[i] = strdup(evsel->name);
 40		if (ev_name[i] == NULL) {
 41			pr_debug("memory allocation failure\n");
 42			goto out;
 43		}
 44		i++;
 45	}
 46	/* remember grouping info */
 47	was_group_event = evsel__is_group_event(evlist__first(evlist));
 48	nr_members = evlist__first(evlist)->core.nr_members;
 49
 50	ret = evlist__expand_cgroup(evlist, cgrp_str, metric_events, false);
 51	if (ret < 0) {
 52		pr_debug("failed to expand events for cgroups\n");
 53		goto out;
 54	}
 55
 56	ret = TEST_FAIL;
 57	if (evlist->core.nr_entries != nr_events * nr_cgrps) {
 58		pr_debug("event count doesn't match\n");
 59		goto out;
 60	}
 61
 62	i = 0;
 63	evlist__for_each_entry(evlist, evsel) {
 64		if (strcmp(evsel->name, ev_name[i % nr_events])) {
 65			pr_debug("event name doesn't match:\n");
 66			pr_debug("  evsel[%d]: %s\n  expected: %s\n",
 67				 i, evsel->name, ev_name[i % nr_events]);
 68			goto out;
 69		}
 70		if (strcmp(evsel->cgrp->name, cgrp_name[i / nr_events])) {
 71			pr_debug("cgroup name doesn't match:\n");
 72			pr_debug("  evsel[%d]: %s\n  expected: %s\n",
 73				 i, evsel->cgrp->name, cgrp_name[i / nr_events]);
 74			goto out;
 75		}
 76
 77		if ((i % nr_events) == 0) {
 78			if (evsel__is_group_event(evsel) != was_group_event) {
 79				pr_debug("event group doesn't match: got %s, expect %s\n",
 80					 evsel__is_group_event(evsel) ? "true" : "false",
 81					 was_group_event ? "true" : "false");
 82				goto out;
 83			}
 84			if (evsel->core.nr_members != nr_members) {
 85				pr_debug("event group member doesn't match: %d vs %d\n",
 86					 evsel->core.nr_members, nr_members);
 87				goto out;
 88			}
 89		}
 90		i++;
 91	}
 92	ret = TEST_OK;
 93
 94out:	for (i = 0; i < nr_events; i++)
 95		free(ev_name[i]);
 96	free(ev_name);
 97	return ret;
 98}
 99
100static int expand_default_events(void)
101{
102	int ret;
103	struct rblist metric_events;
104	struct evlist *evlist = evlist__new_default();
105
106	TEST_ASSERT_VAL("failed to get evlist", evlist);
107
108	rblist__init(&metric_events);
109	ret = test_expand_events(evlist, &metric_events);
110	evlist__delete(evlist);
111	return ret;
112}
113
114static int expand_group_events(void)
115{
116	int ret;
117	struct evlist *evlist;
118	struct rblist metric_events;
119	struct parse_events_error err;
120	const char event_str[] = "{cycles,instructions}";
121
122	symbol_conf.event_group = true;
123
124	evlist = evlist__new();
125	TEST_ASSERT_VAL("failed to get evlist", evlist);
126
127	parse_events_error__init(&err);
128	ret = parse_events(evlist, event_str, &err);
129	if (ret < 0) {
130		pr_debug("failed to parse event '%s', err %d, str '%s'\n",
131			 event_str, ret, err.str);
132		parse_events_error__print(&err, event_str);
133		goto out;
134	}
135
136	rblist__init(&metric_events);
137	ret = test_expand_events(evlist, &metric_events);
138out:
139	parse_events_error__exit(&err);
140	evlist__delete(evlist);
141	return ret;
142}
143
144static int expand_libpfm_events(void)
145{
146	int ret;
147	struct evlist *evlist;
148	struct rblist metric_events;
149	const char event_str[] = "CYCLES";
150	struct option opt = {
151		.value = &evlist,
152	};
153
154	symbol_conf.event_group = true;
155
156	evlist = evlist__new();
157	TEST_ASSERT_VAL("failed to get evlist", evlist);
158
159	ret = parse_libpfm_events_option(&opt, event_str, 0);
160	if (ret < 0) {
161		pr_debug("failed to parse libpfm event '%s', err %d\n",
162			 event_str, ret);
163		goto out;
164	}
165	if (evlist__empty(evlist)) {
166		pr_debug("libpfm was not enabled\n");
167		goto out;
168	}
169
170	rblist__init(&metric_events);
171	ret = test_expand_events(evlist, &metric_events);
172out:
173	evlist__delete(evlist);
174	return ret;
175}
176
177static int expand_metric_events(void)
178{
179	int ret;
180	struct evlist *evlist;
181	struct rblist metric_events;
182	const char metric_str[] = "CPI";
183	const struct pmu_events_table *pme_test;
184
185	evlist = evlist__new();
186	TEST_ASSERT_VAL("failed to get evlist", evlist);
187
188	rblist__init(&metric_events);
189	pme_test = find_core_events_table("testarch", "testcpu");
190	ret = metricgroup__parse_groups_test(evlist, pme_test, metric_str,
191					     false, false, &metric_events);
192	if (ret < 0) {
193		pr_debug("failed to parse '%s' metric\n", metric_str);
194		goto out;
195	}
196
197	ret = test_expand_events(evlist, &metric_events);
198
199out:
200	metricgroup__rblist_exit(&metric_events);
201	evlist__delete(evlist);
202	return ret;
203}
204
205static int test__expand_cgroup_events(struct test_suite *test __maybe_unused,
206				      int subtest __maybe_unused)
207{
208	int ret;
209
210	ret = expand_default_events();
211	TEST_ASSERT_EQUAL("failed to expand default events", ret, 0);
212
213	ret = expand_group_events();
214	TEST_ASSERT_EQUAL("failed to expand event group", ret, 0);
215
216	ret = expand_libpfm_events();
217	TEST_ASSERT_EQUAL("failed to expand event group", ret, 0);
218
219	ret = expand_metric_events();
220	TEST_ASSERT_EQUAL("failed to expand metric events", ret, 0);
221
222	return ret;
223}
224
225DEFINE_SUITE("Event expansion for cgroups", expand_cgroup_events);