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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 | |
aa36ddd7 | 11 | #include "util/env.h" |
4b6ab94e | 12 | #include <subcmd/exec-cmd.h> |
148be2c1 IM |
13 | #include "util/cache.h" |
14 | #include "util/quote.h" | |
4b6ab94e | 15 | #include <subcmd/run-command.h> |
5beeded1 | 16 | #include "util/parse-events.h" |
4b6ab94e | 17 | #include <subcmd/parse-options.h> |
84c86ca1 | 18 | #include "util/bpf-loader.h" |
bbb2cea7 | 19 | #include "util/debug.h" |
592d5a6b | 20 | #include <api/fs/tracing_path.h> |
27683dc5 | 21 | #include <pthread.h> |
14cbfbeb NK |
22 | #include <stdlib.h> |
23 | #include <time.h> | |
07800601 IM |
24 | |
25 | const char perf_usage_string[] = | |
78a1b503 | 26 | "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; |
07800601 IM |
27 | |
28 | const char perf_more_info_string[] = | |
29 | "See 'perf help COMMAND' for more information on a specific command."; | |
30 | ||
5d06e691 | 31 | int use_browser = -1; |
07800601 | 32 | static int use_pager = -1; |
70cb4e96 | 33 | const char *input_name; |
5d06e691 | 34 | |
98a4179c FW |
35 | struct cmd_struct { |
36 | const char *cmd; | |
37 | int (*fn)(int, const char **, const char *); | |
38 | int option; | |
39 | }; | |
40 | ||
41 | static struct cmd_struct commands[] = { | |
42 | { "buildid-cache", cmd_buildid_cache, 0 }, | |
43 | { "buildid-list", cmd_buildid_list, 0 }, | |
30862f2c | 44 | { "config", cmd_config, 0 }, |
98a4179c FW |
45 | { "diff", cmd_diff, 0 }, |
46 | { "evlist", cmd_evlist, 0 }, | |
47 | { "help", cmd_help, 0 }, | |
48 | { "list", cmd_list, 0 }, | |
49 | { "record", cmd_record, 0 }, | |
50 | { "report", cmd_report, 0 }, | |
51 | { "bench", cmd_bench, 0 }, | |
52 | { "stat", cmd_stat, 0 }, | |
53 | { "timechart", cmd_timechart, 0 }, | |
54 | { "top", cmd_top, 0 }, | |
55 | { "annotate", cmd_annotate, 0 }, | |
56 | { "version", cmd_version, 0 }, | |
57 | { "script", cmd_script, 0 }, | |
58 | { "sched", cmd_sched, 0 }, | |
89fe808a | 59 | #ifdef HAVE_LIBELF_SUPPORT |
98a4179c | 60 | { "probe", cmd_probe, 0 }, |
393be2e3 | 61 | #endif |
98a4179c FW |
62 | { "kmem", cmd_kmem, 0 }, |
63 | { "lock", cmd_lock, 0 }, | |
64 | { "kvm", cmd_kvm, 0 }, | |
65 | { "test", cmd_test, 0 }, | |
89fe808a | 66 | #ifdef HAVE_LIBAUDIT_SUPPORT |
514f1c67 | 67 | { "trace", cmd_trace, 0 }, |
4d29089c | 68 | #endif |
98a4179c | 69 | { "inject", cmd_inject, 0 }, |
028f12ee | 70 | { "mem", cmd_mem, 0 }, |
2245bf14 | 71 | { "data", cmd_data, 0 }, |
98a4179c FW |
72 | }; |
73 | ||
07800601 IM |
74 | struct pager_config { |
75 | const char *cmd; | |
76 | int val; | |
77 | }; | |
78 | ||
79 | static int pager_command_config(const char *var, const char *value, void *data) | |
80 | { | |
81 | struct pager_config *c = data; | |
82 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
83 | c->val = perf_config_bool(var, value); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
88 | int check_pager_config(const char *cmd) | |
89 | { | |
90 | struct pager_config c; | |
91 | c.cmd = cmd; | |
92 | c.val = -1; | |
93 | perf_config(pager_command_config, &c); | |
94 | return c.val; | |
95 | } | |
96 | ||
0020ce23 | 97 | static int browser_command_config(const char *var, const char *value, void *data) |
5d06e691 ACM |
98 | { |
99 | struct pager_config *c = data; | |
100 | if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd)) | |
101 | c->val = perf_config_bool(var, value); | |
0020ce23 NK |
102 | if (!prefixcmp(var, "gtk.") && !strcmp(var + 4, c->cmd)) |
103 | c->val = perf_config_bool(var, value) ? 2 : 0; | |
5d06e691 ACM |
104 | return 0; |
105 | } | |
106 | ||
0020ce23 NK |
107 | /* |
108 | * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk", | |
109 | * and -1 for "not specified" | |
110 | */ | |
111 | static int check_browser_config(const char *cmd) | |
5d06e691 ACM |
112 | { |
113 | struct pager_config c; | |
114 | c.cmd = cmd; | |
115 | c.val = -1; | |
0020ce23 | 116 | perf_config(browser_command_config, &c); |
5d06e691 ACM |
117 | return c.val; |
118 | } | |
119 | ||
4c574159 TF |
120 | static void commit_pager_choice(void) |
121 | { | |
07800601 IM |
122 | switch (use_pager) { |
123 | case 0: | |
096d3558 | 124 | setenv(PERF_PAGER_ENVIRONMENT, "cat", 1); |
07800601 IM |
125 | break; |
126 | case 1: | |
127 | /* setup_pager(); */ | |
128 | break; | |
129 | default: | |
130 | break; | |
131 | } | |
132 | } | |
133 | ||
7335399a YS |
134 | struct option options[] = { |
135 | OPT_ARGUMENT("help", "help"), | |
136 | OPT_ARGUMENT("version", "version"), | |
137 | OPT_ARGUMENT("exec-path", "exec-path"), | |
138 | OPT_ARGUMENT("html-path", "html-path"), | |
139 | OPT_ARGUMENT("paginate", "paginate"), | |
140 | OPT_ARGUMENT("no-pager", "no-pager"), | |
141 | OPT_ARGUMENT("perf-dir", "perf-dir"), | |
142 | OPT_ARGUMENT("work-tree", "work-tree"), | |
143 | OPT_ARGUMENT("debugfs-dir", "debugfs-dir"), | |
144 | OPT_ARGUMENT("buildid-dir", "buildid-dir"), | |
145 | OPT_ARGUMENT("list-cmds", "list-cmds"), | |
146 | OPT_ARGUMENT("list-opts", "list-opts"), | |
147 | OPT_ARGUMENT("debug", "debug"), | |
148 | OPT_END() | |
149 | }; | |
150 | ||
4c574159 | 151 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
07800601 IM |
152 | { |
153 | int handled = 0; | |
154 | ||
155 | while (*argc > 0) { | |
156 | const char *cmd = (*argv)[0]; | |
157 | if (cmd[0] != '-') | |
158 | break; | |
159 | ||
160 | /* | |
161 | * For legacy reasons, the "version" and "help" | |
162 | * commands can be written with "--" prepended | |
163 | * to make them look like flags. | |
164 | */ | |
165 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
166 | break; | |
167 | ||
a1853e2c JO |
168 | /* |
169 | * Shortcut for '-h' and '-v' options to invoke help | |
170 | * and version command. | |
171 | */ | |
172 | if (!strcmp(cmd, "-h")) { | |
173 | (*argv)[0] = "--help"; | |
174 | break; | |
175 | } | |
176 | ||
177 | if (!strcmp(cmd, "-v")) { | |
178 | (*argv)[0] = "--version"; | |
179 | break; | |
180 | } | |
181 | ||
07800601 IM |
182 | /* |
183 | * Check remaining flags. | |
184 | */ | |
cfed95a6 VL |
185 | if (!prefixcmp(cmd, CMD_EXEC_PATH)) { |
186 | cmd += strlen(CMD_EXEC_PATH); | |
07800601 | 187 | if (*cmd == '=') |
46113a54 | 188 | set_argv_exec_path(cmd + 1); |
07800601 | 189 | else { |
46113a54 | 190 | puts(get_argv_exec_path()); |
07800601 IM |
191 | exit(0); |
192 | } | |
193 | } else if (!strcmp(cmd, "--html-path")) { | |
194 | puts(system_path(PERF_HTML_PATH)); | |
195 | exit(0); | |
196 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { | |
197 | use_pager = 1; | |
198 | } else if (!strcmp(cmd, "--no-pager")) { | |
199 | use_pager = 0; | |
200 | if (envchanged) | |
201 | *envchanged = 1; | |
202 | } else if (!strcmp(cmd, "--perf-dir")) { | |
203 | if (*argc < 2) { | |
4c574159 | 204 | fprintf(stderr, "No directory given for --perf-dir.\n"); |
07800601 IM |
205 | usage(perf_usage_string); |
206 | } | |
207 | setenv(PERF_DIR_ENVIRONMENT, (*argv)[1], 1); | |
208 | if (envchanged) | |
209 | *envchanged = 1; | |
210 | (*argv)++; | |
211 | (*argc)--; | |
212 | handled++; | |
cfed95a6 VL |
213 | } else if (!prefixcmp(cmd, CMD_PERF_DIR)) { |
214 | setenv(PERF_DIR_ENVIRONMENT, cmd + strlen(CMD_PERF_DIR), 1); | |
07800601 IM |
215 | if (envchanged) |
216 | *envchanged = 1; | |
217 | } else if (!strcmp(cmd, "--work-tree")) { | |
218 | if (*argc < 2) { | |
4c574159 | 219 | fprintf(stderr, "No directory given for --work-tree.\n"); |
07800601 IM |
220 | usage(perf_usage_string); |
221 | } | |
222 | setenv(PERF_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
223 | if (envchanged) | |
224 | *envchanged = 1; | |
225 | (*argv)++; | |
226 | (*argc)--; | |
cfed95a6 VL |
227 | } else if (!prefixcmp(cmd, CMD_WORK_TREE)) { |
228 | setenv(PERF_WORK_TREE_ENVIRONMENT, cmd + strlen(CMD_WORK_TREE), 1); | |
07800601 IM |
229 | if (envchanged) |
230 | *envchanged = 1; | |
5beeded1 JB |
231 | } else if (!strcmp(cmd, "--debugfs-dir")) { |
232 | if (*argc < 2) { | |
233 | fprintf(stderr, "No directory given for --debugfs-dir.\n"); | |
234 | usage(perf_usage_string); | |
235 | } | |
65d4b265 | 236 | tracing_path_set((*argv)[1]); |
5beeded1 JB |
237 | if (envchanged) |
238 | *envchanged = 1; | |
239 | (*argv)++; | |
240 | (*argc)--; | |
99ce8e9f JO |
241 | } else if (!strcmp(cmd, "--buildid-dir")) { |
242 | if (*argc < 2) { | |
243 | fprintf(stderr, "No directory given for --buildid-dir.\n"); | |
244 | usage(perf_usage_string); | |
245 | } | |
246 | set_buildid_dir((*argv)[1]); | |
247 | if (envchanged) | |
248 | *envchanged = 1; | |
249 | (*argv)++; | |
250 | (*argc)--; | |
cfed95a6 | 251 | } else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) { |
65d4b265 | 252 | tracing_path_set(cmd + strlen(CMD_DEBUGFS_DIR)); |
9f30fffc | 253 | fprintf(stderr, "dir: %s\n", tracing_path); |
5beeded1 JB |
254 | if (envchanged) |
255 | *envchanged = 1; | |
98a4179c FW |
256 | } else if (!strcmp(cmd, "--list-cmds")) { |
257 | unsigned int i; | |
258 | ||
259 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
260 | struct cmd_struct *p = commands+i; | |
261 | printf("%s ", p->cmd); | |
262 | } | |
ed457520 | 263 | putchar('\n'); |
98a4179c | 264 | exit(0); |
7335399a YS |
265 | } else if (!strcmp(cmd, "--list-opts")) { |
266 | unsigned int i; | |
267 | ||
268 | for (i = 0; i < ARRAY_SIZE(options)-1; i++) { | |
269 | struct option *p = options+i; | |
270 | printf("--%s ", p->long_name); | |
271 | } | |
272 | putchar('\n'); | |
273 | exit(0); | |
bbb2cea7 JO |
274 | } else if (!strcmp(cmd, "--debug")) { |
275 | if (*argc < 2) { | |
276 | fprintf(stderr, "No variable specified for --debug.\n"); | |
277 | usage(perf_usage_string); | |
278 | } | |
279 | if (perf_debug_option((*argv)[1])) | |
280 | usage(perf_usage_string); | |
281 | ||
282 | (*argv)++; | |
283 | (*argc)--; | |
07800601 IM |
284 | } else { |
285 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
286 | usage(perf_usage_string); | |
287 | } | |
288 | ||
289 | (*argv)++; | |
290 | (*argc)--; | |
291 | handled++; | |
292 | } | |
293 | return handled; | |
294 | } | |
295 | ||
296 | static int handle_alias(int *argcp, const char ***argv) | |
297 | { | |
298 | int envchanged = 0, ret = 0, saved_errno = errno; | |
299 | int count, option_count; | |
4c574159 | 300 | const char **new_argv; |
07800601 IM |
301 | const char *alias_command; |
302 | char *alias_string; | |
07800601 IM |
303 | |
304 | alias_command = (*argv)[0]; | |
305 | alias_string = alias_lookup(alias_command); | |
306 | if (alias_string) { | |
307 | if (alias_string[0] == '!') { | |
308 | if (*argcp > 1) { | |
309 | struct strbuf buf; | |
310 | ||
311 | strbuf_init(&buf, PATH_MAX); | |
312 | strbuf_addstr(&buf, alias_string); | |
313 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); | |
314 | free(alias_string); | |
315 | alias_string = buf.buf; | |
316 | } | |
317 | ret = system(alias_string + 1); | |
318 | if (ret >= 0 && WIFEXITED(ret) && | |
319 | WEXITSTATUS(ret) != 127) | |
320 | exit(WEXITSTATUS(ret)); | |
321 | die("Failed to run '%s' when expanding alias '%s'", | |
322 | alias_string + 1, alias_command); | |
323 | } | |
324 | count = split_cmdline(alias_string, &new_argv); | |
325 | if (count < 0) | |
326 | die("Bad alias.%s string", alias_command); | |
327 | option_count = handle_options(&new_argv, &count, &envchanged); | |
328 | if (envchanged) | |
329 | die("alias '%s' changes environment variables\n" | |
330 | "You can use '!perf' in the alias to do this.", | |
331 | alias_command); | |
332 | memmove(new_argv - option_count, new_argv, | |
333 | count * sizeof(char *)); | |
334 | new_argv -= option_count; | |
335 | ||
336 | if (count < 1) | |
337 | die("empty alias for %s", alias_command); | |
338 | ||
339 | if (!strcmp(alias_command, new_argv[0])) | |
340 | die("recursive alias: %s", alias_command); | |
341 | ||
4c574159 | 342 | new_argv = realloc(new_argv, sizeof(char *) * |
07800601 IM |
343 | (count + *argcp + 1)); |
344 | /* insert after command name */ | |
4c574159 TF |
345 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
346 | new_argv[count + *argcp] = NULL; | |
07800601 IM |
347 | |
348 | *argv = new_argv; | |
349 | *argcp += count - 1; | |
350 | ||
351 | ret = 1; | |
352 | } | |
353 | ||
354 | errno = saved_errno; | |
355 | ||
356 | return ret; | |
357 | } | |
358 | ||
359 | const char perf_version_string[] = PERF_VERSION; | |
360 | ||
361 | #define RUN_SETUP (1<<0) | |
362 | #define USE_PAGER (1<<1) | |
363 | /* | |
364 | * require working tree to be present -- anything uses this needs | |
365 | * RUN_SETUP for reading from the configuration file. | |
366 | */ | |
367 | #define NEED_WORK_TREE (1<<2) | |
368 | ||
07800601 IM |
369 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
370 | { | |
371 | int status; | |
372 | struct stat st; | |
373 | const char *prefix; | |
b2348e1d | 374 | char sbuf[STRERR_BUFSIZE]; |
07800601 IM |
375 | |
376 | prefix = NULL; | |
377 | if (p->option & RUN_SETUP) | |
378 | prefix = NULL; /* setup_perf_directory(); */ | |
379 | ||
5d06e691 | 380 | if (use_browser == -1) |
0020ce23 | 381 | use_browser = check_browser_config(p->cmd); |
5d06e691 | 382 | |
07800601 IM |
383 | if (use_pager == -1 && p->option & RUN_SETUP) |
384 | use_pager = check_pager_config(p->cmd); | |
385 | if (use_pager == -1 && p->option & USE_PAGER) | |
386 | use_pager = 1; | |
387 | commit_pager_choice(); | |
388 | ||
2bdb2c27 | 389 | perf_env__set_cmdline(&perf_env, argc, argv); |
07800601 | 390 | status = p->fn(argc, argv, prefix); |
f3a1f0ea | 391 | exit_browser(status); |
aa36ddd7 | 392 | perf_env__exit(&perf_env); |
84c86ca1 | 393 | bpf__clear(); |
f3a1f0ea | 394 | |
07800601 IM |
395 | if (status) |
396 | return status & 0xff; | |
397 | ||
398 | /* Somebody closed stdout? */ | |
399 | if (fstat(fileno(stdout), &st)) | |
400 | return 0; | |
401 | /* Ignore write errors for pipes and sockets.. */ | |
402 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
403 | return 0; | |
404 | ||
2a16bf8c | 405 | status = 1; |
07800601 | 406 | /* Check for ENOSPC and EIO errors.. */ |
2a16bf8c | 407 | if (fflush(stdout)) { |
b2348e1d MH |
408 | fprintf(stderr, "write failure on standard output: %s", |
409 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
410 | goto out; |
411 | } | |
412 | if (ferror(stdout)) { | |
413 | fprintf(stderr, "unknown write failure on standard output"); | |
414 | goto out; | |
415 | } | |
416 | if (fclose(stdout)) { | |
b2348e1d MH |
417 | fprintf(stderr, "close failed on standard output: %s", |
418 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
419 | goto out; |
420 | } | |
421 | status = 0; | |
422 | out: | |
423 | return status; | |
07800601 IM |
424 | } |
425 | ||
426 | static void handle_internal_command(int argc, const char **argv) | |
427 | { | |
428 | const char *cmd = argv[0]; | |
f37a291c | 429 | unsigned int i; |
07800601 IM |
430 | static const char ext[] = STRIP_EXTENSION; |
431 | ||
432 | if (sizeof(ext) > 1) { | |
433 | i = strlen(argv[0]) - strlen(ext); | |
434 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
435 | char *argv0 = strdup(argv[0]); | |
436 | argv[0] = cmd = argv0; | |
437 | argv0[i] = '\0'; | |
438 | } | |
439 | } | |
440 | ||
441 | /* Turn "perf cmd --help" into "perf help cmd" */ | |
442 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
443 | argv[1] = argv[0]; | |
444 | argv[0] = cmd = "help"; | |
445 | } | |
446 | ||
447 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
448 | struct cmd_struct *p = commands+i; | |
449 | if (strcmp(p->cmd, cmd)) | |
450 | continue; | |
451 | exit(run_builtin(p, argc, argv)); | |
452 | } | |
453 | } | |
454 | ||
455 | static void execv_dashed_external(const char **argv) | |
456 | { | |
5104ffb2 | 457 | char *cmd; |
07800601 IM |
458 | const char *tmp; |
459 | int status; | |
460 | ||
5104ffb2 ACM |
461 | if (asprintf(&cmd, "perf-%s", argv[0]) < 0) |
462 | goto do_die; | |
07800601 IM |
463 | |
464 | /* | |
465 | * argv[0] must be the perf command, but the argv array | |
466 | * belongs to the caller, and may be reused in | |
467 | * subsequent loop iterations. Save argv[0] and | |
468 | * restore it on error. | |
469 | */ | |
470 | tmp = argv[0]; | |
5104ffb2 | 471 | argv[0] = cmd; |
07800601 IM |
472 | |
473 | /* | |
474 | * if we fail because the command is not found, it is | |
475 | * OK to return. Otherwise, we just pass along the status code. | |
476 | */ | |
477 | status = run_command_v_opt(argv, 0); | |
478 | if (status != -ERR_RUN_COMMAND_EXEC) { | |
5104ffb2 ACM |
479 | if (IS_RUN_COMMAND_ERR(status)) { |
480 | do_die: | |
07800601 | 481 | die("unable to run '%s'", argv[0]); |
5104ffb2 | 482 | } |
07800601 IM |
483 | exit(-status); |
484 | } | |
485 | errno = ENOENT; /* as if we called execvp */ | |
486 | ||
487 | argv[0] = tmp; | |
5104ffb2 | 488 | zfree(&cmd); |
07800601 IM |
489 | } |
490 | ||
491 | static int run_argv(int *argcp, const char ***argv) | |
492 | { | |
493 | int done_alias = 0; | |
494 | ||
495 | while (1) { | |
496 | /* See if it's an internal command */ | |
497 | handle_internal_command(*argcp, *argv); | |
498 | ||
499 | /* .. then try the external ones */ | |
500 | execv_dashed_external(*argv); | |
501 | ||
502 | /* It could be an alias -- this works around the insanity | |
503 | * of overriding "perf log" with "perf show" by having | |
504 | * alias.log = show | |
505 | */ | |
506 | if (done_alias || !handle_alias(argcp, argv)) | |
507 | break; | |
508 | done_alias = 1; | |
509 | } | |
510 | ||
511 | return done_alias; | |
512 | } | |
513 | ||
3af6e338 ACM |
514 | static void pthread__block_sigwinch(void) |
515 | { | |
516 | sigset_t set; | |
517 | ||
518 | sigemptyset(&set); | |
519 | sigaddset(&set, SIGWINCH); | |
520 | pthread_sigmask(SIG_BLOCK, &set, NULL); | |
521 | } | |
522 | ||
523 | void pthread__unblock_sigwinch(void) | |
524 | { | |
525 | sigset_t set; | |
526 | ||
527 | sigemptyset(&set); | |
528 | sigaddset(&set, SIGWINCH); | |
529 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); | |
530 | } | |
531 | ||
07800601 IM |
532 | int main(int argc, const char **argv) |
533 | { | |
534 | const char *cmd; | |
b2348e1d | 535 | char sbuf[STRERR_BUFSIZE]; |
07800601 | 536 | |
096d3558 JP |
537 | /* libsubcmd init */ |
538 | exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT); | |
539 | pager_init(PERF_PAGER_ENVIRONMENT); | |
540 | ||
918512b4 | 541 | /* The page_size is placed in util object. */ |
0c1fe6b2 | 542 | page_size = sysconf(_SC_PAGE_SIZE); |
2b1b7100 | 543 | cacheline_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); |
0c1fe6b2 | 544 | |
46113a54 | 545 | cmd = extract_argv0_path(argv[0]); |
07800601 IM |
546 | if (!cmd) |
547 | cmd = "perf-help"; | |
65d4b265 | 548 | |
14cbfbeb NK |
549 | srandom(time(NULL)); |
550 | ||
65d4b265 JO |
551 | /* get debugfs/tracefs mount point from /proc/mounts */ |
552 | tracing_path_mount(); | |
553 | ||
07800601 IM |
554 | /* |
555 | * "perf-xxxx" is the same as "perf xxxx", but we obviously: | |
556 | * | |
557 | * - cannot take flags in between the "perf" and the "xxxx". | |
558 | * - cannot execute it externally (since it would just do | |
559 | * the same thing over again) | |
560 | * | |
561 | * So we just directly call the internal command handler, and | |
562 | * die if that one cannot handle it. | |
563 | */ | |
564 | if (!prefixcmp(cmd, "perf-")) { | |
266dfb0b | 565 | cmd += 5; |
07800601 IM |
566 | argv[0] = cmd; |
567 | handle_internal_command(argc, argv); | |
2a16bf8c ACM |
568 | fprintf(stderr, "cannot handle %s internally", cmd); |
569 | goto out; | |
07800601 | 570 | } |
b52bc234 | 571 | if (!prefixcmp(cmd, "trace")) { |
1b572622 | 572 | #ifdef HAVE_LIBAUDIT_SUPPORT |
99ce8e9f | 573 | set_buildid_dir(NULL); |
b52bc234 ACM |
574 | setup_path(); |
575 | argv[0] = "trace"; | |
576 | return cmd_trace(argc, argv, NULL); | |
1b572622 ACM |
577 | #else |
578 | fprintf(stderr, | |
579 | "trace command not available: missing audit-libs devel package at build time.\n"); | |
580 | goto out; | |
b52bc234 | 581 | #endif |
1b572622 | 582 | } |
07800601 IM |
583 | /* Look for flags.. */ |
584 | argv++; | |
585 | argc--; | |
586 | handle_options(&argv, &argc, NULL); | |
587 | commit_pager_choice(); | |
99ce8e9f | 588 | set_buildid_dir(NULL); |
45de34bb | 589 | |
07800601 IM |
590 | if (argc > 0) { |
591 | if (!prefixcmp(argv[0], "--")) | |
592 | argv[0] += 2; | |
593 | } else { | |
594 | /* The user didn't specify a command; give them help */ | |
502fc5c7 | 595 | printf("\n usage: %s\n\n", perf_usage_string); |
07800601 | 596 | list_common_cmds_help(); |
502fc5c7 | 597 | printf("\n %s\n\n", perf_more_info_string); |
2a16bf8c | 598 | goto out; |
07800601 IM |
599 | } |
600 | cmd = argv[0]; | |
601 | ||
52502bf2 JO |
602 | test_attr__init(); |
603 | ||
07800601 IM |
604 | /* |
605 | * We use PATH to find perf commands, but we prepend some higher | |
659431fc | 606 | * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH |
07800601 IM |
607 | * environment, and the $(perfexecdir) from the Makefile at build |
608 | * time. | |
609 | */ | |
610 | setup_path(); | |
3af6e338 ACM |
611 | /* |
612 | * Block SIGWINCH notifications so that the thread that wants it can | |
613 | * unblock and get syscalls like select interrupted instead of waiting | |
614 | * forever while the signal goes to some other non interested thread. | |
615 | */ | |
616 | pthread__block_sigwinch(); | |
07800601 | 617 | |
dd629cc0 JO |
618 | perf_debug_setup(); |
619 | ||
07800601 | 620 | while (1) { |
4c574159 | 621 | static int done_help; |
b5ded713 | 622 | int was_alias = run_argv(&argc, &argv); |
8035e428 | 623 | |
07800601 IM |
624 | if (errno != ENOENT) |
625 | break; | |
8035e428 | 626 | |
07800601 IM |
627 | if (was_alias) { |
628 | fprintf(stderr, "Expansion of alias '%s' failed; " | |
629 | "'%s' is not a perf-command\n", | |
630 | cmd, argv[0]); | |
2a16bf8c | 631 | goto out; |
07800601 IM |
632 | } |
633 | if (!done_help) { | |
634 | cmd = argv[0] = help_unknown_cmd(cmd); | |
635 | done_help = 1; | |
636 | } else | |
637 | break; | |
638 | } | |
639 | ||
640 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
b2348e1d | 641 | cmd, strerror_r(errno, sbuf, sizeof(sbuf))); |
2a16bf8c | 642 | out: |
07800601 IM |
643 | return 1; |
644 | } |