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Commit | Line | Data |
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bf9e1876 IM |
1 | /* |
2 | * perf.c | |
3 | * | |
4 | * Performance analysis utility. | |
5 | * | |
6 | * This is the main hub from which the sub-commands (perf stat, | |
7 | * perf top, perf record, perf report, etc.) are started. | |
8 | */ | |
07800601 | 9 | #include "builtin.h" |
bf9e1876 | 10 | |
148be2c1 IM |
11 | #include "util/exec_cmd.h" |
12 | #include "util/cache.h" | |
13 | #include "util/quote.h" | |
14 | #include "util/run-command.h" | |
5beeded1 | 15 | #include "util/parse-events.h" |
7335399a | 16 | #include "util/parse-options.h" |
bbb2cea7 | 17 | #include "util/debug.h" |
553873e1 | 18 | #include <api/fs/debugfs.h> |
27683dc5 | 19 | #include <pthread.h> |
07800601 IM |
20 | |
21 | const char perf_usage_string[] = | |
78a1b503 | 22 | "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; |
07800601 IM |
23 | |
24 | const char perf_more_info_string[] = | |
25 | "See 'perf help COMMAND' for more information on a specific command."; | |
26 | ||
5d06e691 | 27 | int use_browser = -1; |
07800601 | 28 | static int use_pager = -1; |
70cb4e96 | 29 | const char *input_name; |
5d06e691 | 30 | |
98a4179c FW |
31 | struct cmd_struct { |
32 | const char *cmd; | |
33 | int (*fn)(int, const char **, const char *); | |
34 | int option; | |
35 | }; | |
36 | ||
37 | static struct cmd_struct commands[] = { | |
38 | { "buildid-cache", cmd_buildid_cache, 0 }, | |
39 | { "buildid-list", cmd_buildid_list, 0 }, | |
40 | { "diff", cmd_diff, 0 }, | |
41 | { "evlist", cmd_evlist, 0 }, | |
42 | { "help", cmd_help, 0 }, | |
43 | { "list", cmd_list, 0 }, | |
44 | { "record", cmd_record, 0 }, | |
45 | { "report", cmd_report, 0 }, | |
46 | { "bench", cmd_bench, 0 }, | |
47 | { "stat", cmd_stat, 0 }, | |
48 | { "timechart", cmd_timechart, 0 }, | |
49 | { "top", cmd_top, 0 }, | |
50 | { "annotate", cmd_annotate, 0 }, | |
51 | { "version", cmd_version, 0 }, | |
52 | { "script", cmd_script, 0 }, | |
53 | { "sched", cmd_sched, 0 }, | |
89fe808a | 54 | #ifdef HAVE_LIBELF_SUPPORT |
98a4179c | 55 | { "probe", cmd_probe, 0 }, |
393be2e3 | 56 | #endif |
98a4179c FW |
57 | { "kmem", cmd_kmem, 0 }, |
58 | { "lock", cmd_lock, 0 }, | |
59 | { "kvm", cmd_kvm, 0 }, | |
60 | { "test", cmd_test, 0 }, | |
89fe808a | 61 | #ifdef HAVE_LIBAUDIT_SUPPORT |
514f1c67 | 62 | { "trace", cmd_trace, 0 }, |
4d29089c | 63 | #endif |
98a4179c | 64 | { "inject", cmd_inject, 0 }, |
028f12ee | 65 | { "mem", cmd_mem, 0 }, |
2245bf14 | 66 | { "data", cmd_data, 0 }, |
98a4179c FW |
67 | }; |
68 | ||
07800601 IM |
69 | struct pager_config { |
70 | const char *cmd; | |
71 | int val; | |
72 | }; | |
73 | ||
74 | static int pager_command_config(const char *var, const char *value, void *data) | |
75 | { | |
76 | struct pager_config *c = data; | |
77 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
78 | c->val = perf_config_bool(var, value); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
83 | int check_pager_config(const char *cmd) | |
84 | { | |
85 | struct pager_config c; | |
86 | c.cmd = cmd; | |
87 | c.val = -1; | |
88 | perf_config(pager_command_config, &c); | |
89 | return c.val; | |
90 | } | |
91 | ||
0020ce23 | 92 | static int browser_command_config(const char *var, const char *value, void *data) |
5d06e691 ACM |
93 | { |
94 | struct pager_config *c = data; | |
95 | if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd)) | |
96 | c->val = perf_config_bool(var, value); | |
0020ce23 NK |
97 | if (!prefixcmp(var, "gtk.") && !strcmp(var + 4, c->cmd)) |
98 | c->val = perf_config_bool(var, value) ? 2 : 0; | |
5d06e691 ACM |
99 | return 0; |
100 | } | |
101 | ||
0020ce23 NK |
102 | /* |
103 | * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk", | |
104 | * and -1 for "not specified" | |
105 | */ | |
106 | static int check_browser_config(const char *cmd) | |
5d06e691 ACM |
107 | { |
108 | struct pager_config c; | |
109 | c.cmd = cmd; | |
110 | c.val = -1; | |
0020ce23 | 111 | perf_config(browser_command_config, &c); |
5d06e691 ACM |
112 | return c.val; |
113 | } | |
114 | ||
4c574159 TF |
115 | static void commit_pager_choice(void) |
116 | { | |
07800601 IM |
117 | switch (use_pager) { |
118 | case 0: | |
119 | setenv("PERF_PAGER", "cat", 1); | |
120 | break; | |
121 | case 1: | |
122 | /* setup_pager(); */ | |
123 | break; | |
124 | default: | |
125 | break; | |
126 | } | |
127 | } | |
128 | ||
7335399a YS |
129 | struct option options[] = { |
130 | OPT_ARGUMENT("help", "help"), | |
131 | OPT_ARGUMENT("version", "version"), | |
132 | OPT_ARGUMENT("exec-path", "exec-path"), | |
133 | OPT_ARGUMENT("html-path", "html-path"), | |
134 | OPT_ARGUMENT("paginate", "paginate"), | |
135 | OPT_ARGUMENT("no-pager", "no-pager"), | |
136 | OPT_ARGUMENT("perf-dir", "perf-dir"), | |
137 | OPT_ARGUMENT("work-tree", "work-tree"), | |
138 | OPT_ARGUMENT("debugfs-dir", "debugfs-dir"), | |
139 | OPT_ARGUMENT("buildid-dir", "buildid-dir"), | |
140 | OPT_ARGUMENT("list-cmds", "list-cmds"), | |
141 | OPT_ARGUMENT("list-opts", "list-opts"), | |
142 | OPT_ARGUMENT("debug", "debug"), | |
143 | OPT_END() | |
144 | }; | |
145 | ||
4c574159 | 146 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
07800601 IM |
147 | { |
148 | int handled = 0; | |
149 | ||
150 | while (*argc > 0) { | |
151 | const char *cmd = (*argv)[0]; | |
152 | if (cmd[0] != '-') | |
153 | break; | |
154 | ||
155 | /* | |
156 | * For legacy reasons, the "version" and "help" | |
157 | * commands can be written with "--" prepended | |
158 | * to make them look like flags. | |
159 | */ | |
160 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
161 | break; | |
162 | ||
163 | /* | |
164 | * Check remaining flags. | |
165 | */ | |
cfed95a6 VL |
166 | if (!prefixcmp(cmd, CMD_EXEC_PATH)) { |
167 | cmd += strlen(CMD_EXEC_PATH); | |
07800601 IM |
168 | if (*cmd == '=') |
169 | perf_set_argv_exec_path(cmd + 1); | |
170 | else { | |
171 | puts(perf_exec_path()); | |
172 | exit(0); | |
173 | } | |
174 | } else if (!strcmp(cmd, "--html-path")) { | |
175 | puts(system_path(PERF_HTML_PATH)); | |
176 | exit(0); | |
177 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { | |
178 | use_pager = 1; | |
179 | } else if (!strcmp(cmd, "--no-pager")) { | |
180 | use_pager = 0; | |
181 | if (envchanged) | |
182 | *envchanged = 1; | |
183 | } else if (!strcmp(cmd, "--perf-dir")) { | |
184 | if (*argc < 2) { | |
4c574159 | 185 | fprintf(stderr, "No directory given for --perf-dir.\n"); |
07800601 IM |
186 | usage(perf_usage_string); |
187 | } | |
188 | setenv(PERF_DIR_ENVIRONMENT, (*argv)[1], 1); | |
189 | if (envchanged) | |
190 | *envchanged = 1; | |
191 | (*argv)++; | |
192 | (*argc)--; | |
193 | handled++; | |
cfed95a6 VL |
194 | } else if (!prefixcmp(cmd, CMD_PERF_DIR)) { |
195 | setenv(PERF_DIR_ENVIRONMENT, cmd + strlen(CMD_PERF_DIR), 1); | |
07800601 IM |
196 | if (envchanged) |
197 | *envchanged = 1; | |
198 | } else if (!strcmp(cmd, "--work-tree")) { | |
199 | if (*argc < 2) { | |
4c574159 | 200 | fprintf(stderr, "No directory given for --work-tree.\n"); |
07800601 IM |
201 | usage(perf_usage_string); |
202 | } | |
203 | setenv(PERF_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
204 | if (envchanged) | |
205 | *envchanged = 1; | |
206 | (*argv)++; | |
207 | (*argc)--; | |
cfed95a6 VL |
208 | } else if (!prefixcmp(cmd, CMD_WORK_TREE)) { |
209 | setenv(PERF_WORK_TREE_ENVIRONMENT, cmd + strlen(CMD_WORK_TREE), 1); | |
07800601 IM |
210 | if (envchanged) |
211 | *envchanged = 1; | |
5beeded1 JB |
212 | } else if (!strcmp(cmd, "--debugfs-dir")) { |
213 | if (*argc < 2) { | |
214 | fprintf(stderr, "No directory given for --debugfs-dir.\n"); | |
215 | usage(perf_usage_string); | |
216 | } | |
1355915a | 217 | perf_debugfs_set_path((*argv)[1]); |
5beeded1 JB |
218 | if (envchanged) |
219 | *envchanged = 1; | |
220 | (*argv)++; | |
221 | (*argc)--; | |
99ce8e9f JO |
222 | } else if (!strcmp(cmd, "--buildid-dir")) { |
223 | if (*argc < 2) { | |
224 | fprintf(stderr, "No directory given for --buildid-dir.\n"); | |
225 | usage(perf_usage_string); | |
226 | } | |
227 | set_buildid_dir((*argv)[1]); | |
228 | if (envchanged) | |
229 | *envchanged = 1; | |
230 | (*argv)++; | |
231 | (*argc)--; | |
cfed95a6 | 232 | } else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) { |
1355915a | 233 | perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR)); |
9f30fffc | 234 | fprintf(stderr, "dir: %s\n", tracing_path); |
5beeded1 JB |
235 | if (envchanged) |
236 | *envchanged = 1; | |
98a4179c FW |
237 | } else if (!strcmp(cmd, "--list-cmds")) { |
238 | unsigned int i; | |
239 | ||
240 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
241 | struct cmd_struct *p = commands+i; | |
242 | printf("%s ", p->cmd); | |
243 | } | |
ed457520 | 244 | putchar('\n'); |
98a4179c | 245 | exit(0); |
7335399a YS |
246 | } else if (!strcmp(cmd, "--list-opts")) { |
247 | unsigned int i; | |
248 | ||
249 | for (i = 0; i < ARRAY_SIZE(options)-1; i++) { | |
250 | struct option *p = options+i; | |
251 | printf("--%s ", p->long_name); | |
252 | } | |
253 | putchar('\n'); | |
254 | exit(0); | |
bbb2cea7 JO |
255 | } else if (!strcmp(cmd, "--debug")) { |
256 | if (*argc < 2) { | |
257 | fprintf(stderr, "No variable specified for --debug.\n"); | |
258 | usage(perf_usage_string); | |
259 | } | |
260 | if (perf_debug_option((*argv)[1])) | |
261 | usage(perf_usage_string); | |
262 | ||
263 | (*argv)++; | |
264 | (*argc)--; | |
07800601 IM |
265 | } else { |
266 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
267 | usage(perf_usage_string); | |
268 | } | |
269 | ||
270 | (*argv)++; | |
271 | (*argc)--; | |
272 | handled++; | |
273 | } | |
274 | return handled; | |
275 | } | |
276 | ||
277 | static int handle_alias(int *argcp, const char ***argv) | |
278 | { | |
279 | int envchanged = 0, ret = 0, saved_errno = errno; | |
280 | int count, option_count; | |
4c574159 | 281 | const char **new_argv; |
07800601 IM |
282 | const char *alias_command; |
283 | char *alias_string; | |
07800601 IM |
284 | |
285 | alias_command = (*argv)[0]; | |
286 | alias_string = alias_lookup(alias_command); | |
287 | if (alias_string) { | |
288 | if (alias_string[0] == '!') { | |
289 | if (*argcp > 1) { | |
290 | struct strbuf buf; | |
291 | ||
292 | strbuf_init(&buf, PATH_MAX); | |
293 | strbuf_addstr(&buf, alias_string); | |
294 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); | |
295 | free(alias_string); | |
296 | alias_string = buf.buf; | |
297 | } | |
298 | ret = system(alias_string + 1); | |
299 | if (ret >= 0 && WIFEXITED(ret) && | |
300 | WEXITSTATUS(ret) != 127) | |
301 | exit(WEXITSTATUS(ret)); | |
302 | die("Failed to run '%s' when expanding alias '%s'", | |
303 | alias_string + 1, alias_command); | |
304 | } | |
305 | count = split_cmdline(alias_string, &new_argv); | |
306 | if (count < 0) | |
307 | die("Bad alias.%s string", alias_command); | |
308 | option_count = handle_options(&new_argv, &count, &envchanged); | |
309 | if (envchanged) | |
310 | die("alias '%s' changes environment variables\n" | |
311 | "You can use '!perf' in the alias to do this.", | |
312 | alias_command); | |
313 | memmove(new_argv - option_count, new_argv, | |
314 | count * sizeof(char *)); | |
315 | new_argv -= option_count; | |
316 | ||
317 | if (count < 1) | |
318 | die("empty alias for %s", alias_command); | |
319 | ||
320 | if (!strcmp(alias_command, new_argv[0])) | |
321 | die("recursive alias: %s", alias_command); | |
322 | ||
4c574159 | 323 | new_argv = realloc(new_argv, sizeof(char *) * |
07800601 IM |
324 | (count + *argcp + 1)); |
325 | /* insert after command name */ | |
4c574159 TF |
326 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
327 | new_argv[count + *argcp] = NULL; | |
07800601 IM |
328 | |
329 | *argv = new_argv; | |
330 | *argcp += count - 1; | |
331 | ||
332 | ret = 1; | |
333 | } | |
334 | ||
335 | errno = saved_errno; | |
336 | ||
337 | return ret; | |
338 | } | |
339 | ||
340 | const char perf_version_string[] = PERF_VERSION; | |
341 | ||
342 | #define RUN_SETUP (1<<0) | |
343 | #define USE_PAGER (1<<1) | |
344 | /* | |
345 | * require working tree to be present -- anything uses this needs | |
346 | * RUN_SETUP for reading from the configuration file. | |
347 | */ | |
348 | #define NEED_WORK_TREE (1<<2) | |
349 | ||
07800601 IM |
350 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
351 | { | |
352 | int status; | |
353 | struct stat st; | |
354 | const char *prefix; | |
b2348e1d | 355 | char sbuf[STRERR_BUFSIZE]; |
07800601 IM |
356 | |
357 | prefix = NULL; | |
358 | if (p->option & RUN_SETUP) | |
359 | prefix = NULL; /* setup_perf_directory(); */ | |
360 | ||
5d06e691 | 361 | if (use_browser == -1) |
0020ce23 | 362 | use_browser = check_browser_config(p->cmd); |
5d06e691 | 363 | |
07800601 IM |
364 | if (use_pager == -1 && p->option & RUN_SETUP) |
365 | use_pager = check_pager_config(p->cmd); | |
366 | if (use_pager == -1 && p->option & USE_PAGER) | |
367 | use_pager = 1; | |
368 | commit_pager_choice(); | |
369 | ||
07800601 | 370 | status = p->fn(argc, argv, prefix); |
f3a1f0ea ACM |
371 | exit_browser(status); |
372 | ||
07800601 IM |
373 | if (status) |
374 | return status & 0xff; | |
375 | ||
376 | /* Somebody closed stdout? */ | |
377 | if (fstat(fileno(stdout), &st)) | |
378 | return 0; | |
379 | /* Ignore write errors for pipes and sockets.. */ | |
380 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
381 | return 0; | |
382 | ||
2a16bf8c | 383 | status = 1; |
07800601 | 384 | /* Check for ENOSPC and EIO errors.. */ |
2a16bf8c | 385 | if (fflush(stdout)) { |
b2348e1d MH |
386 | fprintf(stderr, "write failure on standard output: %s", |
387 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
388 | goto out; |
389 | } | |
390 | if (ferror(stdout)) { | |
391 | fprintf(stderr, "unknown write failure on standard output"); | |
392 | goto out; | |
393 | } | |
394 | if (fclose(stdout)) { | |
b2348e1d MH |
395 | fprintf(stderr, "close failed on standard output: %s", |
396 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
397 | goto out; |
398 | } | |
399 | status = 0; | |
400 | out: | |
401 | return status; | |
07800601 IM |
402 | } |
403 | ||
404 | static void handle_internal_command(int argc, const char **argv) | |
405 | { | |
406 | const char *cmd = argv[0]; | |
f37a291c | 407 | unsigned int i; |
07800601 IM |
408 | static const char ext[] = STRIP_EXTENSION; |
409 | ||
410 | if (sizeof(ext) > 1) { | |
411 | i = strlen(argv[0]) - strlen(ext); | |
412 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
413 | char *argv0 = strdup(argv[0]); | |
414 | argv[0] = cmd = argv0; | |
415 | argv0[i] = '\0'; | |
416 | } | |
417 | } | |
418 | ||
419 | /* Turn "perf cmd --help" into "perf help cmd" */ | |
420 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
421 | argv[1] = argv[0]; | |
422 | argv[0] = cmd = "help"; | |
423 | } | |
424 | ||
425 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
426 | struct cmd_struct *p = commands+i; | |
427 | if (strcmp(p->cmd, cmd)) | |
428 | continue; | |
429 | exit(run_builtin(p, argc, argv)); | |
430 | } | |
431 | } | |
432 | ||
433 | static void execv_dashed_external(const char **argv) | |
434 | { | |
435 | struct strbuf cmd = STRBUF_INIT; | |
436 | const char *tmp; | |
437 | int status; | |
438 | ||
439 | strbuf_addf(&cmd, "perf-%s", argv[0]); | |
440 | ||
441 | /* | |
442 | * argv[0] must be the perf command, but the argv array | |
443 | * belongs to the caller, and may be reused in | |
444 | * subsequent loop iterations. Save argv[0] and | |
445 | * restore it on error. | |
446 | */ | |
447 | tmp = argv[0]; | |
448 | argv[0] = cmd.buf; | |
449 | ||
450 | /* | |
451 | * if we fail because the command is not found, it is | |
452 | * OK to return. Otherwise, we just pass along the status code. | |
453 | */ | |
454 | status = run_command_v_opt(argv, 0); | |
455 | if (status != -ERR_RUN_COMMAND_EXEC) { | |
456 | if (IS_RUN_COMMAND_ERR(status)) | |
457 | die("unable to run '%s'", argv[0]); | |
458 | exit(-status); | |
459 | } | |
460 | errno = ENOENT; /* as if we called execvp */ | |
461 | ||
462 | argv[0] = tmp; | |
463 | ||
464 | strbuf_release(&cmd); | |
465 | } | |
466 | ||
467 | static int run_argv(int *argcp, const char ***argv) | |
468 | { | |
469 | int done_alias = 0; | |
470 | ||
471 | while (1) { | |
472 | /* See if it's an internal command */ | |
473 | handle_internal_command(*argcp, *argv); | |
474 | ||
475 | /* .. then try the external ones */ | |
476 | execv_dashed_external(*argv); | |
477 | ||
478 | /* It could be an alias -- this works around the insanity | |
479 | * of overriding "perf log" with "perf show" by having | |
480 | * alias.log = show | |
481 | */ | |
482 | if (done_alias || !handle_alias(argcp, argv)) | |
483 | break; | |
484 | done_alias = 1; | |
485 | } | |
486 | ||
487 | return done_alias; | |
488 | } | |
489 | ||
3af6e338 ACM |
490 | static void pthread__block_sigwinch(void) |
491 | { | |
492 | sigset_t set; | |
493 | ||
494 | sigemptyset(&set); | |
495 | sigaddset(&set, SIGWINCH); | |
496 | pthread_sigmask(SIG_BLOCK, &set, NULL); | |
497 | } | |
498 | ||
499 | void pthread__unblock_sigwinch(void) | |
500 | { | |
501 | sigset_t set; | |
502 | ||
503 | sigemptyset(&set); | |
504 | sigaddset(&set, SIGWINCH); | |
505 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); | |
506 | } | |
507 | ||
07800601 IM |
508 | int main(int argc, const char **argv) |
509 | { | |
510 | const char *cmd; | |
b2348e1d | 511 | char sbuf[STRERR_BUFSIZE]; |
07800601 | 512 | |
918512b4 | 513 | /* The page_size is placed in util object. */ |
0c1fe6b2 | 514 | page_size = sysconf(_SC_PAGE_SIZE); |
2b1b7100 | 515 | cacheline_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); |
0c1fe6b2 | 516 | |
07800601 IM |
517 | cmd = perf_extract_argv0_path(argv[0]); |
518 | if (!cmd) | |
519 | cmd = "perf-help"; | |
5beeded1 | 520 | /* get debugfs mount point from /proc/mounts */ |
1355915a | 521 | perf_debugfs_mount(NULL); |
07800601 IM |
522 | /* |
523 | * "perf-xxxx" is the same as "perf xxxx", but we obviously: | |
524 | * | |
525 | * - cannot take flags in between the "perf" and the "xxxx". | |
526 | * - cannot execute it externally (since it would just do | |
527 | * the same thing over again) | |
528 | * | |
529 | * So we just directly call the internal command handler, and | |
530 | * die if that one cannot handle it. | |
531 | */ | |
532 | if (!prefixcmp(cmd, "perf-")) { | |
266dfb0b | 533 | cmd += 5; |
07800601 IM |
534 | argv[0] = cmd; |
535 | handle_internal_command(argc, argv); | |
2a16bf8c ACM |
536 | fprintf(stderr, "cannot handle %s internally", cmd); |
537 | goto out; | |
07800601 | 538 | } |
b52bc234 | 539 | if (!prefixcmp(cmd, "trace")) { |
1b572622 | 540 | #ifdef HAVE_LIBAUDIT_SUPPORT |
99ce8e9f | 541 | set_buildid_dir(NULL); |
b52bc234 ACM |
542 | setup_path(); |
543 | argv[0] = "trace"; | |
544 | return cmd_trace(argc, argv, NULL); | |
1b572622 ACM |
545 | #else |
546 | fprintf(stderr, | |
547 | "trace command not available: missing audit-libs devel package at build time.\n"); | |
548 | goto out; | |
b52bc234 | 549 | #endif |
1b572622 | 550 | } |
07800601 IM |
551 | /* Look for flags.. */ |
552 | argv++; | |
553 | argc--; | |
554 | handle_options(&argv, &argc, NULL); | |
555 | commit_pager_choice(); | |
99ce8e9f | 556 | set_buildid_dir(NULL); |
45de34bb | 557 | |
07800601 IM |
558 | if (argc > 0) { |
559 | if (!prefixcmp(argv[0], "--")) | |
560 | argv[0] += 2; | |
561 | } else { | |
562 | /* The user didn't specify a command; give them help */ | |
502fc5c7 | 563 | printf("\n usage: %s\n\n", perf_usage_string); |
07800601 | 564 | list_common_cmds_help(); |
502fc5c7 | 565 | printf("\n %s\n\n", perf_more_info_string); |
2a16bf8c | 566 | goto out; |
07800601 IM |
567 | } |
568 | cmd = argv[0]; | |
569 | ||
52502bf2 JO |
570 | test_attr__init(); |
571 | ||
07800601 IM |
572 | /* |
573 | * We use PATH to find perf commands, but we prepend some higher | |
659431fc | 574 | * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH |
07800601 IM |
575 | * environment, and the $(perfexecdir) from the Makefile at build |
576 | * time. | |
577 | */ | |
578 | setup_path(); | |
3af6e338 ACM |
579 | /* |
580 | * Block SIGWINCH notifications so that the thread that wants it can | |
581 | * unblock and get syscalls like select interrupted instead of waiting | |
582 | * forever while the signal goes to some other non interested thread. | |
583 | */ | |
584 | pthread__block_sigwinch(); | |
07800601 IM |
585 | |
586 | while (1) { | |
4c574159 | 587 | static int done_help; |
b5ded713 | 588 | int was_alias = run_argv(&argc, &argv); |
8035e428 | 589 | |
07800601 IM |
590 | if (errno != ENOENT) |
591 | break; | |
8035e428 | 592 | |
07800601 IM |
593 | if (was_alias) { |
594 | fprintf(stderr, "Expansion of alias '%s' failed; " | |
595 | "'%s' is not a perf-command\n", | |
596 | cmd, argv[0]); | |
2a16bf8c | 597 | goto out; |
07800601 IM |
598 | } |
599 | if (!done_help) { | |
600 | cmd = argv[0] = help_unknown_cmd(cmd); | |
601 | done_help = 1; | |
602 | } else | |
603 | break; | |
604 | } | |
605 | ||
606 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
b2348e1d | 607 | cmd, strerror_r(errno, sbuf, sizeof(sbuf))); |
2a16bf8c | 608 | out: |
07800601 IM |
609 | return 1; |
610 | } |