1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Test support for libpfm4 event encodings.
4 *
5 * Copyright 2020 Google LLC.
6 */
7#include <errno.h>
8#include "tests.h"
9#include "util/debug.h"
10#include "util/evlist.h"
11#include "util/pfm.h"
12
13#include <linux/kernel.h>
14
15#ifdef HAVE_LIBPFM
16static int count_pfm_events(struct perf_evlist *evlist)
17{
18 struct perf_evsel *evsel;
19 int count = 0;
20
21 perf_evlist__for_each_entry(evlist, evsel) {
22 count++;
23 }
24 return count;
25}
26
27static int test__pfm_events(struct test_suite *test __maybe_unused,
28 int subtest __maybe_unused)
29{
30 struct evlist *evlist;
31 struct option opt;
32 size_t i;
33 const struct {
34 const char *events;
35 int nr_events;
36 } table[] = {
37 {
38 .events = "",
39 .nr_events = 0,
40 },
41 {
42 .events = "instructions",
43 .nr_events = 1,
44 },
45 {
46 .events = "instructions,cycles",
47 .nr_events = 2,
48 },
49 {
50 .events = "stereolab",
51 .nr_events = 0,
52 },
53 {
54 .events = "instructions,instructions",
55 .nr_events = 2,
56 },
57 {
58 .events = "stereolab,instructions",
59 .nr_events = 0,
60 },
61 {
62 .events = "instructions,stereolab",
63 .nr_events = 1,
64 },
65 };
66
67 for (i = 0; i < ARRAY_SIZE(table); i++) {
68 evlist = evlist__new();
69 if (evlist == NULL)
70 return -ENOMEM;
71
72 opt.value = evlist;
73 parse_libpfm_events_option(&opt,
74 table[i].events,
75 0);
76 TEST_ASSERT_EQUAL(table[i].events,
77 count_pfm_events(&evlist->core),
78 table[i].nr_events);
79 TEST_ASSERT_EQUAL(table[i].events,
80 evlist__nr_groups(evlist),
81 0);
82
83 evlist__delete(evlist);
84 }
85 return 0;
86}
87
88static int test__pfm_group(struct test_suite *test __maybe_unused,
89 int subtest __maybe_unused)
90{
91 struct evlist *evlist;
92 struct option opt;
93 size_t i;
94 const struct {
95 const char *events;
96 int nr_events;
97 int nr_groups;
98 } table[] = {
99 {
100 .events = "{},",
101 .nr_events = 0,
102 .nr_groups = 0,
103 },
104 {
105 .events = "{instructions}",
106 .nr_events = 1,
107 .nr_groups = 0,
108 },
109 {
110 .events = "{instructions},{}",
111 .nr_events = 1,
112 .nr_groups = 0,
113 },
114 {
115 .events = "{},{instructions}",
116 .nr_events = 1,
117 .nr_groups = 0,
118 },
119 {
120 .events = "{instructions},{instructions}",
121 .nr_events = 2,
122 .nr_groups = 0,
123 },
124 {
125 .events = "{instructions,cycles},{instructions,cycles}",
126 .nr_events = 4,
127 .nr_groups = 2,
128 },
129 {
130 .events = "{stereolab}",
131 .nr_events = 0,
132 .nr_groups = 0,
133 },
134 {
135 .events =
136 "{instructions,cycles},{instructions,stereolab}",
137 .nr_events = 3,
138 .nr_groups = 1,
139 },
140 {
141 .events = "instructions}",
142 .nr_events = 1,
143 .nr_groups = 0,
144 },
145 {
146 .events = "{{instructions}}",
147 .nr_events = 0,
148 .nr_groups = 0,
149 },
150 };
151
152 for (i = 0; i < ARRAY_SIZE(table); i++) {
153 evlist = evlist__new();
154 if (evlist == NULL)
155 return -ENOMEM;
156
157 opt.value = evlist;
158 parse_libpfm_events_option(&opt,
159 table[i].events,
160 0);
161 TEST_ASSERT_EQUAL(table[i].events,
162 count_pfm_events(&evlist->core),
163 table[i].nr_events);
164 TEST_ASSERT_EQUAL(table[i].events,
165 evlist__nr_groups(evlist),
166 table[i].nr_groups);
167
168 evlist__delete(evlist);
169 }
170 return 0;
171}
172#else
173static int test__pfm_events(struct test_suite *test __maybe_unused,
174 int subtest __maybe_unused)
175{
176 return TEST_SKIP;
177}
178
179static int test__pfm_group(struct test_suite *test __maybe_unused,
180 int subtest __maybe_unused)
181{
182 return TEST_SKIP;
183}
184#endif
185
186static struct test_case pfm_tests[] = {
187 TEST_CASE_REASON("test of individual --pfm-events", pfm_events, "not compiled in"),
188 TEST_CASE_REASON("test groups of --pfm-events", pfm_group, "not compiled in"),
189 { .name = NULL, }
190};
191
192struct test_suite suite__pfm = {
193 .desc = "Test libpfm4 support",
194 .test_cases = pfm_tests,
195};
196

source code of linux/tools/perf/tests/pfm.c