tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include <stdarg.h>
4#include <linux/perf_event.h>
5#include <perf/cpumap.h>
6#include <perf/threadmap.h>
7#include <perf/evlist.h>
8#include <perf/evsel.h>
9#include <internal/tests.h>
10
11static int libperf_print(enum libperf_print_level level,
12 const char *fmt, va_list ap)
13{
14 return vfprintf(stderr, fmt, ap);
15}
16
17static int test_stat_cpu(void)
18{
19 struct perf_cpu_map *cpus;
20 struct perf_evlist *evlist;
21 struct perf_evsel *evsel;
22 struct perf_event_attr attr1 = {
23 .type = PERF_TYPE_SOFTWARE,
24 .config = PERF_COUNT_SW_CPU_CLOCK,
25 };
26 struct perf_event_attr attr2 = {
27 .type = PERF_TYPE_SOFTWARE,
28 .config = PERF_COUNT_SW_TASK_CLOCK,
29 };
30 int err, cpu, tmp;
31
32 cpus = perf_cpu_map__new(NULL);
33 __T("failed to create cpus", cpus);
34
35 evlist = perf_evlist__new();
36 __T("failed to create evlist", evlist);
37
38 evsel = perf_evsel__new(&attr1);
39 __T("failed to create evsel1", evsel);
40
41 perf_evlist__add(evlist, evsel);
42
43 evsel = perf_evsel__new(&attr2);
44 __T("failed to create evsel2", evsel);
45
46 perf_evlist__add(evlist, evsel);
47
48 perf_evlist__set_maps(evlist, cpus, NULL);
49
50 err = perf_evlist__open(evlist);
51 __T("failed to open evsel", err == 0);
52
53 perf_evlist__for_each_evsel(evlist, evsel) {
54 cpus = perf_evsel__cpus(evsel);
55
56 perf_cpu_map__for_each_cpu(cpu, tmp, cpus) {
57 struct perf_counts_values counts = { .val = 0 };
58
59 perf_evsel__read(evsel, cpu, 0, &counts);
60 __T("failed to read value for evsel", counts.val != 0);
61 }
62 }
63
64 perf_evlist__close(evlist);
65 perf_evlist__delete(evlist);
66
67 perf_cpu_map__put(cpus);
68 return 0;
69}
70
71static int test_stat_thread(void)
72{
73 struct perf_counts_values counts = { .val = 0 };
74 struct perf_thread_map *threads;
75 struct perf_evlist *evlist;
76 struct perf_evsel *evsel;
77 struct perf_event_attr attr1 = {
78 .type = PERF_TYPE_SOFTWARE,
79 .config = PERF_COUNT_SW_CPU_CLOCK,
80 };
81 struct perf_event_attr attr2 = {
82 .type = PERF_TYPE_SOFTWARE,
83 .config = PERF_COUNT_SW_TASK_CLOCK,
84 };
85 int err;
86
87 threads = perf_thread_map__new_dummy();
88 __T("failed to create threads", threads);
89
90 perf_thread_map__set_pid(threads, 0, 0);
91
92 evlist = perf_evlist__new();
93 __T("failed to create evlist", evlist);
94
95 evsel = perf_evsel__new(&attr1);
96 __T("failed to create evsel1", evsel);
97
98 perf_evlist__add(evlist, evsel);
99
100 evsel = perf_evsel__new(&attr2);
101 __T("failed to create evsel2", evsel);
102
103 perf_evlist__add(evlist, evsel);
104
105 perf_evlist__set_maps(evlist, NULL, threads);
106
107 err = perf_evlist__open(evlist);
108 __T("failed to open evsel", err == 0);
109
110 perf_evlist__for_each_evsel(evlist, evsel) {
111 perf_evsel__read(evsel, 0, 0, &counts);
112 __T("failed to read value for evsel", counts.val != 0);
113 }
114
115 perf_evlist__close(evlist);
116 perf_evlist__delete(evlist);
117
118 perf_thread_map__put(threads);
119 return 0;
120}
121
122static int test_stat_thread_enable(void)
123{
124 struct perf_counts_values counts = { .val = 0 };
125 struct perf_thread_map *threads;
126 struct perf_evlist *evlist;
127 struct perf_evsel *evsel;
128 struct perf_event_attr attr1 = {
129 .type = PERF_TYPE_SOFTWARE,
130 .config = PERF_COUNT_SW_CPU_CLOCK,
131 .disabled = 1,
132 };
133 struct perf_event_attr attr2 = {
134 .type = PERF_TYPE_SOFTWARE,
135 .config = PERF_COUNT_SW_TASK_CLOCK,
136 .disabled = 1,
137 };
138 int err;
139
140 threads = perf_thread_map__new_dummy();
141 __T("failed to create threads", threads);
142
143 perf_thread_map__set_pid(threads, 0, 0);
144
145 evlist = perf_evlist__new();
146 __T("failed to create evlist", evlist);
147
148 evsel = perf_evsel__new(&attr1);
149 __T("failed to create evsel1", evsel);
150
151 perf_evlist__add(evlist, evsel);
152
153 evsel = perf_evsel__new(&attr2);
154 __T("failed to create evsel2", evsel);
155
156 perf_evlist__add(evlist, evsel);
157
158 perf_evlist__set_maps(evlist, NULL, threads);
159
160 err = perf_evlist__open(evlist);
161 __T("failed to open evsel", err == 0);
162
163 perf_evlist__for_each_evsel(evlist, evsel) {
164 perf_evsel__read(evsel, 0, 0, &counts);
165 __T("failed to read value for evsel", counts.val == 0);
166 }
167
168 perf_evlist__enable(evlist);
169
170 perf_evlist__for_each_evsel(evlist, evsel) {
171 perf_evsel__read(evsel, 0, 0, &counts);
172 __T("failed to read value for evsel", counts.val != 0);
173 }
174
175 perf_evlist__disable(evlist);
176
177 perf_evlist__close(evlist);
178 perf_evlist__delete(evlist);
179
180 perf_thread_map__put(threads);
181 return 0;
182}
183
184int main(int argc, char **argv)
185{
186 __T_START;
187
188 libperf_init(libperf_print);
189
190 test_stat_cpu();
191 test_stat_thread();
192 test_stat_thread_enable();
193
194 __T_OK;
195 return 0;
196}