Commit | Line | Data |
---|---|---|
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" |
bbb2cea7 | 16 | #include "util/debug.h" |
553873e1 | 17 | #include <api/fs/debugfs.h> |
27683dc5 | 18 | #include <pthread.h> |
07800601 IM |
19 | |
20 | const char perf_usage_string[] = | |
78a1b503 | 21 | "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; |
07800601 IM |
22 | |
23 | const char perf_more_info_string[] = | |
24 | "See 'perf help COMMAND' for more information on a specific command."; | |
25 | ||
5d06e691 | 26 | int use_browser = -1; |
07800601 | 27 | static int use_pager = -1; |
70cb4e96 | 28 | const char *input_name; |
5d06e691 | 29 | |
98a4179c FW |
30 | struct cmd_struct { |
31 | const char *cmd; | |
32 | int (*fn)(int, const char **, const char *); | |
33 | int option; | |
34 | }; | |
35 | ||
36 | static struct cmd_struct commands[] = { | |
37 | { "buildid-cache", cmd_buildid_cache, 0 }, | |
38 | { "buildid-list", cmd_buildid_list, 0 }, | |
39 | { "diff", cmd_diff, 0 }, | |
40 | { "evlist", cmd_evlist, 0 }, | |
41 | { "help", cmd_help, 0 }, | |
42 | { "list", cmd_list, 0 }, | |
43 | { "record", cmd_record, 0 }, | |
44 | { "report", cmd_report, 0 }, | |
45 | { "bench", cmd_bench, 0 }, | |
46 | { "stat", cmd_stat, 0 }, | |
47 | { "timechart", cmd_timechart, 0 }, | |
48 | { "top", cmd_top, 0 }, | |
49 | { "annotate", cmd_annotate, 0 }, | |
50 | { "version", cmd_version, 0 }, | |
51 | { "script", cmd_script, 0 }, | |
52 | { "sched", cmd_sched, 0 }, | |
89fe808a | 53 | #ifdef HAVE_LIBELF_SUPPORT |
98a4179c | 54 | { "probe", cmd_probe, 0 }, |
393be2e3 | 55 | #endif |
98a4179c FW |
56 | { "kmem", cmd_kmem, 0 }, |
57 | { "lock", cmd_lock, 0 }, | |
58 | { "kvm", cmd_kvm, 0 }, | |
59 | { "test", cmd_test, 0 }, | |
89fe808a | 60 | #ifdef HAVE_LIBAUDIT_SUPPORT |
514f1c67 | 61 | { "trace", cmd_trace, 0 }, |
4d29089c | 62 | #endif |
98a4179c | 63 | { "inject", cmd_inject, 0 }, |
028f12ee | 64 | { "mem", cmd_mem, 0 }, |
98a4179c FW |
65 | }; |
66 | ||
07800601 IM |
67 | struct pager_config { |
68 | const char *cmd; | |
69 | int val; | |
70 | }; | |
71 | ||
72 | static int pager_command_config(const char *var, const char *value, void *data) | |
73 | { | |
74 | struct pager_config *c = data; | |
75 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
76 | c->val = perf_config_bool(var, value); | |
77 | return 0; | |
78 | } | |
79 | ||
80 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
81 | int check_pager_config(const char *cmd) | |
82 | { | |
83 | struct pager_config c; | |
84 | c.cmd = cmd; | |
85 | c.val = -1; | |
86 | perf_config(pager_command_config, &c); | |
87 | return c.val; | |
88 | } | |
89 | ||
0020ce23 | 90 | static int browser_command_config(const char *var, const char *value, void *data) |
5d06e691 ACM |
91 | { |
92 | struct pager_config *c = data; | |
93 | if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd)) | |
94 | c->val = perf_config_bool(var, value); | |
0020ce23 NK |
95 | if (!prefixcmp(var, "gtk.") && !strcmp(var + 4, c->cmd)) |
96 | c->val = perf_config_bool(var, value) ? 2 : 0; | |
5d06e691 ACM |
97 | return 0; |
98 | } | |
99 | ||
0020ce23 NK |
100 | /* |
101 | * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk", | |
102 | * and -1 for "not specified" | |
103 | */ | |
104 | static int check_browser_config(const char *cmd) | |
5d06e691 ACM |
105 | { |
106 | struct pager_config c; | |
107 | c.cmd = cmd; | |
108 | c.val = -1; | |
0020ce23 | 109 | perf_config(browser_command_config, &c); |
5d06e691 ACM |
110 | return c.val; |
111 | } | |
112 | ||
4c574159 TF |
113 | static void commit_pager_choice(void) |
114 | { | |
07800601 IM |
115 | switch (use_pager) { |
116 | case 0: | |
117 | setenv("PERF_PAGER", "cat", 1); | |
118 | break; | |
119 | case 1: | |
120 | /* setup_pager(); */ | |
121 | break; | |
122 | default: | |
123 | break; | |
124 | } | |
125 | } | |
126 | ||
4c574159 | 127 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
07800601 IM |
128 | { |
129 | int handled = 0; | |
130 | ||
131 | while (*argc > 0) { | |
132 | const char *cmd = (*argv)[0]; | |
133 | if (cmd[0] != '-') | |
134 | break; | |
135 | ||
136 | /* | |
137 | * For legacy reasons, the "version" and "help" | |
138 | * commands can be written with "--" prepended | |
139 | * to make them look like flags. | |
140 | */ | |
141 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
142 | break; | |
143 | ||
144 | /* | |
145 | * Check remaining flags. | |
146 | */ | |
cfed95a6 VL |
147 | if (!prefixcmp(cmd, CMD_EXEC_PATH)) { |
148 | cmd += strlen(CMD_EXEC_PATH); | |
07800601 IM |
149 | if (*cmd == '=') |
150 | perf_set_argv_exec_path(cmd + 1); | |
151 | else { | |
152 | puts(perf_exec_path()); | |
153 | exit(0); | |
154 | } | |
155 | } else if (!strcmp(cmd, "--html-path")) { | |
156 | puts(system_path(PERF_HTML_PATH)); | |
157 | exit(0); | |
158 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { | |
159 | use_pager = 1; | |
160 | } else if (!strcmp(cmd, "--no-pager")) { | |
161 | use_pager = 0; | |
162 | if (envchanged) | |
163 | *envchanged = 1; | |
164 | } else if (!strcmp(cmd, "--perf-dir")) { | |
165 | if (*argc < 2) { | |
4c574159 | 166 | fprintf(stderr, "No directory given for --perf-dir.\n"); |
07800601 IM |
167 | usage(perf_usage_string); |
168 | } | |
169 | setenv(PERF_DIR_ENVIRONMENT, (*argv)[1], 1); | |
170 | if (envchanged) | |
171 | *envchanged = 1; | |
172 | (*argv)++; | |
173 | (*argc)--; | |
174 | handled++; | |
cfed95a6 VL |
175 | } else if (!prefixcmp(cmd, CMD_PERF_DIR)) { |
176 | setenv(PERF_DIR_ENVIRONMENT, cmd + strlen(CMD_PERF_DIR), 1); | |
07800601 IM |
177 | if (envchanged) |
178 | *envchanged = 1; | |
179 | } else if (!strcmp(cmd, "--work-tree")) { | |
180 | if (*argc < 2) { | |
4c574159 | 181 | fprintf(stderr, "No directory given for --work-tree.\n"); |
07800601 IM |
182 | usage(perf_usage_string); |
183 | } | |
184 | setenv(PERF_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
185 | if (envchanged) | |
186 | *envchanged = 1; | |
187 | (*argv)++; | |
188 | (*argc)--; | |
cfed95a6 VL |
189 | } else if (!prefixcmp(cmd, CMD_WORK_TREE)) { |
190 | setenv(PERF_WORK_TREE_ENVIRONMENT, cmd + strlen(CMD_WORK_TREE), 1); | |
07800601 IM |
191 | if (envchanged) |
192 | *envchanged = 1; | |
5beeded1 JB |
193 | } else if (!strcmp(cmd, "--debugfs-dir")) { |
194 | if (*argc < 2) { | |
195 | fprintf(stderr, "No directory given for --debugfs-dir.\n"); | |
196 | usage(perf_usage_string); | |
197 | } | |
1355915a | 198 | perf_debugfs_set_path((*argv)[1]); |
5beeded1 JB |
199 | if (envchanged) |
200 | *envchanged = 1; | |
201 | (*argv)++; | |
202 | (*argc)--; | |
cfed95a6 | 203 | } else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) { |
1355915a | 204 | perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR)); |
ebf294bf | 205 | fprintf(stderr, "dir: %s\n", debugfs_mountpoint); |
5beeded1 JB |
206 | if (envchanged) |
207 | *envchanged = 1; | |
98a4179c FW |
208 | } else if (!strcmp(cmd, "--list-cmds")) { |
209 | unsigned int i; | |
210 | ||
211 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
212 | struct cmd_struct *p = commands+i; | |
213 | printf("%s ", p->cmd); | |
214 | } | |
215 | exit(0); | |
bbb2cea7 JO |
216 | } else if (!strcmp(cmd, "--debug")) { |
217 | if (*argc < 2) { | |
218 | fprintf(stderr, "No variable specified for --debug.\n"); | |
219 | usage(perf_usage_string); | |
220 | } | |
221 | if (perf_debug_option((*argv)[1])) | |
222 | usage(perf_usage_string); | |
223 | ||
224 | (*argv)++; | |
225 | (*argc)--; | |
07800601 IM |
226 | } else { |
227 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
228 | usage(perf_usage_string); | |
229 | } | |
230 | ||
231 | (*argv)++; | |
232 | (*argc)--; | |
233 | handled++; | |
234 | } | |
235 | return handled; | |
236 | } | |
237 | ||
238 | static int handle_alias(int *argcp, const char ***argv) | |
239 | { | |
240 | int envchanged = 0, ret = 0, saved_errno = errno; | |
241 | int count, option_count; | |
4c574159 | 242 | const char **new_argv; |
07800601 IM |
243 | const char *alias_command; |
244 | char *alias_string; | |
07800601 IM |
245 | |
246 | alias_command = (*argv)[0]; | |
247 | alias_string = alias_lookup(alias_command); | |
248 | if (alias_string) { | |
249 | if (alias_string[0] == '!') { | |
250 | if (*argcp > 1) { | |
251 | struct strbuf buf; | |
252 | ||
253 | strbuf_init(&buf, PATH_MAX); | |
254 | strbuf_addstr(&buf, alias_string); | |
255 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); | |
256 | free(alias_string); | |
257 | alias_string = buf.buf; | |
258 | } | |
259 | ret = system(alias_string + 1); | |
260 | if (ret >= 0 && WIFEXITED(ret) && | |
261 | WEXITSTATUS(ret) != 127) | |
262 | exit(WEXITSTATUS(ret)); | |
263 | die("Failed to run '%s' when expanding alias '%s'", | |
264 | alias_string + 1, alias_command); | |
265 | } | |
266 | count = split_cmdline(alias_string, &new_argv); | |
267 | if (count < 0) | |
268 | die("Bad alias.%s string", alias_command); | |
269 | option_count = handle_options(&new_argv, &count, &envchanged); | |
270 | if (envchanged) | |
271 | die("alias '%s' changes environment variables\n" | |
272 | "You can use '!perf' in the alias to do this.", | |
273 | alias_command); | |
274 | memmove(new_argv - option_count, new_argv, | |
275 | count * sizeof(char *)); | |
276 | new_argv -= option_count; | |
277 | ||
278 | if (count < 1) | |
279 | die("empty alias for %s", alias_command); | |
280 | ||
281 | if (!strcmp(alias_command, new_argv[0])) | |
282 | die("recursive alias: %s", alias_command); | |
283 | ||
4c574159 | 284 | new_argv = realloc(new_argv, sizeof(char *) * |
07800601 IM |
285 | (count + *argcp + 1)); |
286 | /* insert after command name */ | |
4c574159 TF |
287 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
288 | new_argv[count + *argcp] = NULL; | |
07800601 IM |
289 | |
290 | *argv = new_argv; | |
291 | *argcp += count - 1; | |
292 | ||
293 | ret = 1; | |
294 | } | |
295 | ||
296 | errno = saved_errno; | |
297 | ||
298 | return ret; | |
299 | } | |
300 | ||
301 | const char perf_version_string[] = PERF_VERSION; | |
302 | ||
303 | #define RUN_SETUP (1<<0) | |
304 | #define USE_PAGER (1<<1) | |
305 | /* | |
306 | * require working tree to be present -- anything uses this needs | |
307 | * RUN_SETUP for reading from the configuration file. | |
308 | */ | |
309 | #define NEED_WORK_TREE (1<<2) | |
310 | ||
07800601 IM |
311 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
312 | { | |
313 | int status; | |
314 | struct stat st; | |
315 | const char *prefix; | |
b2348e1d | 316 | char sbuf[STRERR_BUFSIZE]; |
07800601 IM |
317 | |
318 | prefix = NULL; | |
319 | if (p->option & RUN_SETUP) | |
320 | prefix = NULL; /* setup_perf_directory(); */ | |
321 | ||
5d06e691 | 322 | if (use_browser == -1) |
0020ce23 | 323 | use_browser = check_browser_config(p->cmd); |
5d06e691 | 324 | |
07800601 IM |
325 | if (use_pager == -1 && p->option & RUN_SETUP) |
326 | use_pager = check_pager_config(p->cmd); | |
327 | if (use_pager == -1 && p->option & USE_PAGER) | |
328 | use_pager = 1; | |
329 | commit_pager_choice(); | |
330 | ||
07800601 | 331 | status = p->fn(argc, argv, prefix); |
f3a1f0ea ACM |
332 | exit_browser(status); |
333 | ||
07800601 IM |
334 | if (status) |
335 | return status & 0xff; | |
336 | ||
337 | /* Somebody closed stdout? */ | |
338 | if (fstat(fileno(stdout), &st)) | |
339 | return 0; | |
340 | /* Ignore write errors for pipes and sockets.. */ | |
341 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
342 | return 0; | |
343 | ||
2a16bf8c | 344 | status = 1; |
07800601 | 345 | /* Check for ENOSPC and EIO errors.. */ |
2a16bf8c | 346 | if (fflush(stdout)) { |
b2348e1d MH |
347 | fprintf(stderr, "write failure on standard output: %s", |
348 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
349 | goto out; |
350 | } | |
351 | if (ferror(stdout)) { | |
352 | fprintf(stderr, "unknown write failure on standard output"); | |
353 | goto out; | |
354 | } | |
355 | if (fclose(stdout)) { | |
b2348e1d MH |
356 | fprintf(stderr, "close failed on standard output: %s", |
357 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
2a16bf8c ACM |
358 | goto out; |
359 | } | |
360 | status = 0; | |
361 | out: | |
362 | return status; | |
07800601 IM |
363 | } |
364 | ||
365 | static void handle_internal_command(int argc, const char **argv) | |
366 | { | |
367 | const char *cmd = argv[0]; | |
f37a291c | 368 | unsigned int i; |
07800601 IM |
369 | static const char ext[] = STRIP_EXTENSION; |
370 | ||
371 | if (sizeof(ext) > 1) { | |
372 | i = strlen(argv[0]) - strlen(ext); | |
373 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
374 | char *argv0 = strdup(argv[0]); | |
375 | argv[0] = cmd = argv0; | |
376 | argv0[i] = '\0'; | |
377 | } | |
378 | } | |
379 | ||
380 | /* Turn "perf cmd --help" into "perf help cmd" */ | |
381 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
382 | argv[1] = argv[0]; | |
383 | argv[0] = cmd = "help"; | |
384 | } | |
385 | ||
386 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
387 | struct cmd_struct *p = commands+i; | |
388 | if (strcmp(p->cmd, cmd)) | |
389 | continue; | |
390 | exit(run_builtin(p, argc, argv)); | |
391 | } | |
392 | } | |
393 | ||
394 | static void execv_dashed_external(const char **argv) | |
395 | { | |
396 | struct strbuf cmd = STRBUF_INIT; | |
397 | const char *tmp; | |
398 | int status; | |
399 | ||
400 | strbuf_addf(&cmd, "perf-%s", argv[0]); | |
401 | ||
402 | /* | |
403 | * argv[0] must be the perf command, but the argv array | |
404 | * belongs to the caller, and may be reused in | |
405 | * subsequent loop iterations. Save argv[0] and | |
406 | * restore it on error. | |
407 | */ | |
408 | tmp = argv[0]; | |
409 | argv[0] = cmd.buf; | |
410 | ||
411 | /* | |
412 | * if we fail because the command is not found, it is | |
413 | * OK to return. Otherwise, we just pass along the status code. | |
414 | */ | |
415 | status = run_command_v_opt(argv, 0); | |
416 | if (status != -ERR_RUN_COMMAND_EXEC) { | |
417 | if (IS_RUN_COMMAND_ERR(status)) | |
418 | die("unable to run '%s'", argv[0]); | |
419 | exit(-status); | |
420 | } | |
421 | errno = ENOENT; /* as if we called execvp */ | |
422 | ||
423 | argv[0] = tmp; | |
424 | ||
425 | strbuf_release(&cmd); | |
426 | } | |
427 | ||
428 | static int run_argv(int *argcp, const char ***argv) | |
429 | { | |
430 | int done_alias = 0; | |
431 | ||
432 | while (1) { | |
433 | /* See if it's an internal command */ | |
434 | handle_internal_command(*argcp, *argv); | |
435 | ||
436 | /* .. then try the external ones */ | |
437 | execv_dashed_external(*argv); | |
438 | ||
439 | /* It could be an alias -- this works around the insanity | |
440 | * of overriding "perf log" with "perf show" by having | |
441 | * alias.log = show | |
442 | */ | |
443 | if (done_alias || !handle_alias(argcp, argv)) | |
444 | break; | |
445 | done_alias = 1; | |
446 | } | |
447 | ||
448 | return done_alias; | |
449 | } | |
450 | ||
3af6e338 ACM |
451 | static void pthread__block_sigwinch(void) |
452 | { | |
453 | sigset_t set; | |
454 | ||
455 | sigemptyset(&set); | |
456 | sigaddset(&set, SIGWINCH); | |
457 | pthread_sigmask(SIG_BLOCK, &set, NULL); | |
458 | } | |
459 | ||
460 | void pthread__unblock_sigwinch(void) | |
461 | { | |
462 | sigset_t set; | |
463 | ||
464 | sigemptyset(&set); | |
465 | sigaddset(&set, SIGWINCH); | |
466 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); | |
467 | } | |
468 | ||
07800601 IM |
469 | int main(int argc, const char **argv) |
470 | { | |
471 | const char *cmd; | |
b2348e1d | 472 | char sbuf[STRERR_BUFSIZE]; |
07800601 | 473 | |
918512b4 | 474 | /* The page_size is placed in util object. */ |
0c1fe6b2 | 475 | page_size = sysconf(_SC_PAGE_SIZE); |
2b1b7100 | 476 | cacheline_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); |
0c1fe6b2 | 477 | |
07800601 IM |
478 | cmd = perf_extract_argv0_path(argv[0]); |
479 | if (!cmd) | |
480 | cmd = "perf-help"; | |
5beeded1 | 481 | /* get debugfs mount point from /proc/mounts */ |
1355915a | 482 | perf_debugfs_mount(NULL); |
07800601 IM |
483 | /* |
484 | * "perf-xxxx" is the same as "perf xxxx", but we obviously: | |
485 | * | |
486 | * - cannot take flags in between the "perf" and the "xxxx". | |
487 | * - cannot execute it externally (since it would just do | |
488 | * the same thing over again) | |
489 | * | |
490 | * So we just directly call the internal command handler, and | |
491 | * die if that one cannot handle it. | |
492 | */ | |
493 | if (!prefixcmp(cmd, "perf-")) { | |
266dfb0b | 494 | cmd += 5; |
07800601 IM |
495 | argv[0] = cmd; |
496 | handle_internal_command(argc, argv); | |
2a16bf8c ACM |
497 | fprintf(stderr, "cannot handle %s internally", cmd); |
498 | goto out; | |
07800601 | 499 | } |
b52bc234 | 500 | if (!prefixcmp(cmd, "trace")) { |
1b572622 | 501 | #ifdef HAVE_LIBAUDIT_SUPPORT |
b52bc234 ACM |
502 | set_buildid_dir(); |
503 | setup_path(); | |
504 | argv[0] = "trace"; | |
505 | return cmd_trace(argc, argv, NULL); | |
1b572622 ACM |
506 | #else |
507 | fprintf(stderr, | |
508 | "trace command not available: missing audit-libs devel package at build time.\n"); | |
509 | goto out; | |
b52bc234 | 510 | #endif |
1b572622 | 511 | } |
07800601 IM |
512 | /* Look for flags.. */ |
513 | argv++; | |
514 | argc--; | |
515 | handle_options(&argv, &argc, NULL); | |
516 | commit_pager_choice(); | |
45de34bb SE |
517 | set_buildid_dir(); |
518 | ||
07800601 IM |
519 | if (argc > 0) { |
520 | if (!prefixcmp(argv[0], "--")) | |
521 | argv[0] += 2; | |
522 | } else { | |
523 | /* The user didn't specify a command; give them help */ | |
502fc5c7 | 524 | printf("\n usage: %s\n\n", perf_usage_string); |
07800601 | 525 | list_common_cmds_help(); |
502fc5c7 | 526 | printf("\n %s\n\n", perf_more_info_string); |
2a16bf8c | 527 | goto out; |
07800601 IM |
528 | } |
529 | cmd = argv[0]; | |
530 | ||
52502bf2 JO |
531 | test_attr__init(); |
532 | ||
07800601 IM |
533 | /* |
534 | * We use PATH to find perf commands, but we prepend some higher | |
659431fc | 535 | * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH |
07800601 IM |
536 | * environment, and the $(perfexecdir) from the Makefile at build |
537 | * time. | |
538 | */ | |
539 | setup_path(); | |
3af6e338 ACM |
540 | /* |
541 | * Block SIGWINCH notifications so that the thread that wants it can | |
542 | * unblock and get syscalls like select interrupted instead of waiting | |
543 | * forever while the signal goes to some other non interested thread. | |
544 | */ | |
545 | pthread__block_sigwinch(); | |
07800601 IM |
546 | |
547 | while (1) { | |
4c574159 | 548 | static int done_help; |
b5ded713 | 549 | int was_alias = run_argv(&argc, &argv); |
8035e428 | 550 | |
07800601 IM |
551 | if (errno != ENOENT) |
552 | break; | |
8035e428 | 553 | |
07800601 IM |
554 | if (was_alias) { |
555 | fprintf(stderr, "Expansion of alias '%s' failed; " | |
556 | "'%s' is not a perf-command\n", | |
557 | cmd, argv[0]); | |
2a16bf8c | 558 | goto out; |
07800601 IM |
559 | } |
560 | if (!done_help) { | |
561 | cmd = argv[0] = help_unknown_cmd(cmd); | |
562 | done_help = 1; | |
563 | } else | |
564 | break; | |
565 | } | |
566 | ||
567 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
b2348e1d | 568 | cmd, strerror_r(errno, sbuf, sizeof(sbuf))); |
2a16bf8c | 569 | out: |
07800601 IM |
570 | return 1; |
571 | } |