1
2
3
4
5
6#include <unistd.h>
7#include <string.h>
8#include "builtin.h"
9#include "hist.h"
10#include "intlist.h"
11#include "tests.h"
12#include "debug.h"
13#include "color.h"
14#include "parse-options.h"
15#include "symbol.h"
16
17static struct test {
18 const char *desc;
19 int (*func)(void);
20} tests[] = {
21 {
22 .desc = "vmlinux symtab matches kallsyms",
23 .func = test__vmlinux_matches_kallsyms,
24 },
25 {
26 .desc = "detect open syscall event",
27 .func = test__open_syscall_event,
28 },
29 {
30 .desc = "detect open syscall event on all cpus",
31 .func = test__open_syscall_event_on_all_cpus,
32 },
33 {
34 .desc = "read samples using the mmap interface",
35 .func = test__basic_mmap,
36 },
37 {
38 .desc = "parse events tests",
39 .func = test__parse_events,
40 },
41#if defined(__x86_64__) || defined(__i386__)
42 {
43 .desc = "x86 rdpmc test",
44 .func = test__rdpmc,
45 },
46#endif
47 {
48 .desc = "Validate PERF_RECORD_* events & perf_sample fields",
49 .func = test__PERF_RECORD,
50 },
51 {
52 .desc = "Test perf pmu format parsing",
53 .func = test__pmu,
54 },
55 {
56 .desc = "Test dso data read",
57 .func = test__dso_data,
58 },
59 {
60 .desc = "Test dso data cache",
61 .func = test__dso_data_cache,
62 },
63 {
64 .desc = "Test dso data reopen",
65 .func = test__dso_data_reopen,
66 },
67 {
68 .desc = "roundtrip evsel->name check",
69 .func = test__perf_evsel__roundtrip_name_test,
70 },
71 {
72 .desc = "Check parsing of sched tracepoints fields",
73 .func = test__perf_evsel__tp_sched_test,
74 },
75 {
76 .desc = "Generate and check syscalls:sys_enter_open event fields",
77 .func = test__syscall_open_tp_fields,
78 },
79 {
80 .desc = "struct perf_event_attr setup",
81 .func = test__attr,
82 },
83 {
84 .desc = "Test matching and linking multiple hists",
85 .func = test__hists_link,
86 },
87 {
88 .desc = "Try 'import perf' in python, checking link problems",
89 .func = test__python_use,
90 },
91 {
92 .desc = "Test breakpoint overflow signal handler",
93 .func = test__bp_signal,
94 },
95 {
96 .desc = "Test breakpoint overflow sampling",
97 .func = test__bp_signal_overflow,
98 },
99 {
100 .desc = "Test number of exit event of a simple workload",
101 .func = test__task_exit,
102 },
103 {
104 .desc = "Test software clock events have valid period values",
105 .func = test__sw_clock_freq,
106 },
107#if defined(__x86_64__) || defined(__i386__)
108 {
109 .desc = "Test converting perf time to TSC",
110 .func = test__perf_time_to_tsc,
111 },
112#endif
113 {
114 .desc = "Test object code reading",
115 .func = test__code_reading,
116 },
117 {
118 .desc = "Test sample parsing",
119 .func = test__sample_parsing,
120 },
121 {
122 .desc = "Test using a dummy software event to keep tracking",
123 .func = test__keep_tracking,
124 },
125 {
126 .desc = "Test parsing with no sample_id_all bit set",
127 .func = test__parse_no_sample_id_all,
128 },
129#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
130#ifdef HAVE_DWARF_UNWIND_SUPPORT
131 {
132 .desc = "Test dwarf unwind",
133 .func = test__dwarf_unwind,
134 },
135#endif
136#endif
137 {
138 .desc = "Test filtering hist entries",
139 .func = test__hists_filter,
140 },
141 {
142 .desc = "Test mmap thread lookup",
143 .func = test__mmap_thread_lookup,
144 },
145 {
146 .desc = "Test thread mg sharing",
147 .func = test__thread_mg_share,
148 },
149 {
150 .desc = "Test output sorting of hist entries",
151 .func = test__hists_output,
152 },
153 {
154 .desc = "Test cumulation of child hist entries",
155 .func = test__hists_cumulate,
156 },
157 {
158 .desc = "Test tracking with sched_switch",
159 .func = test__switch_tracking,
160 },
161 {
162 .desc = "Filter fds with revents mask in a fdarray",
163 .func = test__fdarray__filter,
164 },
165 {
166 .desc = "Add fd to a fdarray, making it autogrow",
167 .func = test__fdarray__add,
168 },
169 {
170 .func = NULL,
171 },
172};
173
174static bool perf_test__matches(int curr, int argc, const char *argv[])
175{
176 int i;
177
178 if (argc == 0)
179 return true;
180
181 for (i = 0; i < argc; ++i) {
182 char *end;
183 long nr = strtoul(argv[i], &end, 10);
184
185 if (*end == '\0') {
186 if (nr == curr + 1)
187 return true;
188 continue;
189 }
190
191 if (strstr(tests[curr].desc, argv[i]))
192 return true;
193 }
194
195 return false;
196}
197
198static int run_test(struct test *test)
199{
200 int status, err = -1, child = fork();
201 char sbuf[STRERR_BUFSIZE];
202
203 if (child < 0) {
204 pr_err("failed to fork test: %s\n",
205 strerror_r(errno, sbuf, sizeof(sbuf)));
206 return -1;
207 }
208
209 if (!child) {
210 pr_debug("test child forked, pid %d\n", getpid());
211 err = test->func();
212 exit(err);
213 }
214
215 wait(&status);
216
217 if (WIFEXITED(status)) {
218 err = WEXITSTATUS(status);
219 pr_debug("test child finished with %d\n", err);
220 } else if (WIFSIGNALED(status)) {
221 err = -1;
222 pr_debug("test child interrupted\n");
223 }
224
225 return err;
226}
227
228static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
229{
230 int i = 0;
231 int width = 0;
232
233 while (tests[i].func) {
234 int len = strlen(tests[i].desc);
235
236 if (width < len)
237 width = len;
238 ++i;
239 }
240
241 i = 0;
242 while (tests[i].func) {
243 int curr = i++, err;
244
245 if (!perf_test__matches(curr, argc, argv))
246 continue;
247
248 pr_info("%2d: %-*s:", i, width, tests[curr].desc);
249
250 if (intlist__find(skiplist, i)) {
251 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
252 continue;
253 }
254
255 pr_debug("\n--- start ---\n");
256 err = run_test(&tests[curr]);
257 pr_debug("---- end ----\n%s:", tests[curr].desc);
258
259 switch (err) {
260 case TEST_OK:
261 pr_info(" Ok\n");
262 break;
263 case TEST_SKIP:
264 color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
265 break;
266 case TEST_FAIL:
267 default:
268 color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
269 break;
270 }
271 }
272
273 return 0;
274}
275
276static int perf_test__list(int argc, const char **argv)
277{
278 int i = 0;
279
280 while (tests[i].func) {
281 int curr = i++;
282
283 if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
284 continue;
285
286 pr_info("%2d: %s\n", i, tests[curr].desc);
287 }
288
289 return 0;
290}
291
292int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
293{
294 const char * const test_usage[] = {
295 "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
296 NULL,
297 };
298 const char *skip = NULL;
299 const struct option test_options[] = {
300 OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
301 OPT_INCR('v', "verbose", &verbose,
302 "be more verbose (show symbol address, etc)"),
303 OPT_END()
304 };
305 struct intlist *skiplist = NULL;
306 int ret = hists__init();
307
308 if (ret < 0)
309 return ret;
310
311 argc = parse_options(argc, argv, test_options, test_usage, 0);
312 if (argc >= 1 && !strcmp(argv[0], "list"))
313 return perf_test__list(argc, argv);
314
315 symbol_conf.priv_size = sizeof(int);
316 symbol_conf.sort_by_name = true;
317 symbol_conf.try_vmlinux_path = true;
318
319 if (symbol__init(NULL) < 0)
320 return -1;
321
322 if (skip != NULL)
323 skiplist = intlist__new(skip);
324
325 return __cmd_test(argc, argv, skiplist);
326}
327
