Commit | Line | Data |
---|---|---|
4ea42b18 MH |
1 | /* |
2 | * builtin-probe.c | |
3 | * | |
4 | * Builtin probe command: Set up probe events by C expression | |
5 | * | |
6 | * Written by Masami Hiramatsu <mhiramat@redhat.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | */ | |
4ea42b18 MH |
23 | #include <sys/utsname.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <fcntl.h> | |
27 | #include <errno.h> | |
28 | #include <stdio.h> | |
29 | #include <unistd.h> | |
30 | #include <stdlib.h> | |
31 | #include <string.h> | |
32 | ||
4ea42b18 MH |
33 | #include "perf.h" |
34 | #include "builtin.h" | |
35 | #include "util/util.h" | |
fa28244d | 36 | #include "util/strlist.h" |
bd09d7b5 | 37 | #include "util/strfilter.h" |
e0faa8d3 | 38 | #include "util/symbol.h" |
89c69c0e | 39 | #include "util/debug.h" |
4ea42b18 | 40 | #include "util/parse-options.h" |
4ea42b18 | 41 | #include "util/probe-finder.h" |
50656eec | 42 | #include "util/probe-event.h" |
e607f142 | 43 | #include "util/probe-file.h" |
4ea42b18 | 44 | |
bd09d7b5 | 45 | #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*" |
3c42258c | 46 | #define DEFAULT_FUNC_FILTER "!_*" |
b6a89643 | 47 | #define DEFAULT_LIST_FILTER "*:*" |
4ea42b18 MH |
48 | |
49 | /* Session management structure */ | |
50 | static struct { | |
b1019d5e | 51 | int command; /* Command short_name */ |
fac13fd5 | 52 | bool list_events; |
225466f1 | 53 | bool uprobes; |
5e17b28f | 54 | bool quiet; |
8cb0aa4c | 55 | bool target_used; |
4235b045 MH |
56 | int nevents; |
57 | struct perf_probe_event events[MAX_PROBES]; | |
631c9def | 58 | struct line_range line_range; |
e53b00d3 | 59 | char *target; |
bd09d7b5 | 60 | struct strfilter *filter; |
12a1fadb | 61 | } params; |
4ea42b18 | 62 | |
253977b0 | 63 | /* Parse an event definition. Note that any error must die. */ |
146a1439 | 64 | static int parse_probe_event(const char *str) |
4ea42b18 | 65 | { |
4235b045 | 66 | struct perf_probe_event *pev = ¶ms.events[params.nevents]; |
146a1439 | 67 | int ret; |
4ea42b18 | 68 | |
4235b045 | 69 | pr_debug("probe-definition(%d): %s\n", params.nevents, str); |
8a7ddad8 ACM |
70 | if (++params.nevents == MAX_PROBES) { |
71 | pr_err("Too many probes (> %d) were specified.", MAX_PROBES); | |
72 | return -1; | |
73 | } | |
4ea42b18 | 74 | |
225466f1 | 75 | pev->uprobes = params.uprobes; |
7afb3fab MH |
76 | if (params.target) { |
77 | pev->target = strdup(params.target); | |
78 | if (!pev->target) | |
79 | return -ENOMEM; | |
8cb0aa4c | 80 | params.target_used = true; |
7afb3fab | 81 | } |
225466f1 | 82 | |
4235b045 | 83 | /* Parse a perf-probe command into event */ |
146a1439 | 84 | ret = parse_perf_probe_command(str, pev); |
4235b045 | 85 | pr_debug("%d arguments\n", pev->nargs); |
146a1439 MH |
86 | |
87 | return ret; | |
46ab4926 MH |
88 | } |
89 | ||
b6a89643 MH |
90 | static int params_add_filter(const char *str) |
91 | { | |
92 | const char *err = NULL; | |
93 | int ret = 0; | |
94 | ||
95 | pr_debug2("Add filter: %s\n", str); | |
96 | if (!params.filter) { | |
97 | params.filter = strfilter__new(str, &err); | |
98 | if (!params.filter) | |
99 | ret = err ? -EINVAL : -ENOMEM; | |
100 | } else | |
101 | ret = strfilter__or(params.filter, str, &err); | |
102 | ||
103 | if (ret == -EINVAL) { | |
104 | pr_err("Filter parse error at %td.\n", err - str + 1); | |
105 | pr_err("Source: \"%s\"\n", str); | |
106 | pr_err(" %*c\n", (int)(err - str + 1), '^'); | |
107 | } | |
108 | ||
109 | return ret; | |
110 | } | |
111 | ||
73eff9f5 SD |
112 | static int set_target(const char *ptr) |
113 | { | |
114 | int found = 0; | |
115 | const char *buf; | |
116 | ||
117 | /* | |
118 | * The first argument after options can be an absolute path | |
119 | * to an executable / library or kernel module. | |
120 | * | |
121 | * TODO: Support relative path, and $PATH, $LD_LIBRARY_PATH, | |
122 | * short module name. | |
123 | */ | |
124 | if (!params.target && ptr && *ptr == '/') { | |
e53b00d3 MH |
125 | params.target = strdup(ptr); |
126 | if (!params.target) | |
127 | return -ENOMEM; | |
8cb0aa4c | 128 | params.target_used = false; |
e53b00d3 | 129 | |
73eff9f5 SD |
130 | found = 1; |
131 | buf = ptr + (strlen(ptr) - 3); | |
132 | ||
133 | if (strcmp(buf, ".ko")) | |
134 | params.uprobes = true; | |
135 | ||
136 | } | |
137 | ||
138 | return found; | |
139 | } | |
140 | ||
146a1439 | 141 | static int parse_probe_event_argv(int argc, const char **argv) |
d1bde3f7 | 142 | { |
73eff9f5 | 143 | int i, len, ret, found_target; |
d1bde3f7 MH |
144 | char *buf; |
145 | ||
73eff9f5 | 146 | found_target = set_target(argv[0]); |
e53b00d3 MH |
147 | if (found_target < 0) |
148 | return found_target; | |
149 | ||
73eff9f5 SD |
150 | if (found_target && argc == 1) |
151 | return 0; | |
152 | ||
d1bde3f7 MH |
153 | /* Bind up rest arguments */ |
154 | len = 0; | |
73eff9f5 SD |
155 | for (i = 0; i < argc; i++) { |
156 | if (i == 0 && found_target) | |
157 | continue; | |
158 | ||
d1bde3f7 | 159 | len += strlen(argv[i]) + 1; |
73eff9f5 | 160 | } |
8a7ddad8 ACM |
161 | buf = zalloc(len + 1); |
162 | if (buf == NULL) | |
163 | return -ENOMEM; | |
d1bde3f7 | 164 | len = 0; |
73eff9f5 SD |
165 | for (i = 0; i < argc; i++) { |
166 | if (i == 0 && found_target) | |
167 | continue; | |
168 | ||
d1bde3f7 | 169 | len += sprintf(&buf[len], "%s ", argv[i]); |
73eff9f5 | 170 | } |
146a1439 | 171 | ret = parse_probe_event(buf); |
d1bde3f7 | 172 | free(buf); |
146a1439 | 173 | return ret; |
d1bde3f7 MH |
174 | } |
175 | ||
225466f1 | 176 | static int opt_set_target(const struct option *opt, const char *str, |
1d037ca1 | 177 | int unset __maybe_unused) |
225466f1 SD |
178 | { |
179 | int ret = -ENOENT; | |
8a613d40 | 180 | char *tmp; |
225466f1 | 181 | |
7afb3fab | 182 | if (str) { |
225466f1 SD |
183 | if (!strcmp(opt->long_name, "exec")) |
184 | params.uprobes = true; | |
89fe808a | 185 | #ifdef HAVE_DWARF_SUPPORT |
225466f1 SD |
186 | else if (!strcmp(opt->long_name, "module")) |
187 | params.uprobes = false; | |
188 | #endif | |
189 | else | |
190 | return ret; | |
191 | ||
8a613d40 MH |
192 | /* Expand given path to absolute path, except for modulename */ |
193 | if (params.uprobes || strchr(str, '/')) { | |
194 | tmp = realpath(str, NULL); | |
195 | if (!tmp) { | |
196 | pr_warning("Failed to get the absolute path of %s: %m\n", str); | |
197 | return ret; | |
198 | } | |
199 | } else { | |
200 | tmp = strdup(str); | |
201 | if (!tmp) | |
202 | return -ENOMEM; | |
203 | } | |
7afb3fab | 204 | free(params.target); |
8a613d40 | 205 | params.target = tmp; |
8cb0aa4c | 206 | params.target_used = false; |
225466f1 SD |
207 | ret = 0; |
208 | } | |
209 | ||
210 | return ret; | |
211 | } | |
212 | ||
b1019d5e MH |
213 | /* Command option callbacks */ |
214 | ||
89fe808a | 215 | #ifdef HAVE_DWARF_SUPPORT |
b1019d5e | 216 | static int opt_show_lines(const struct option *opt, |
1d037ca1 | 217 | const char *str, int unset __maybe_unused) |
0eda7385 | 218 | { |
146a1439 MH |
219 | int ret = 0; |
220 | ||
13e27d76 MH |
221 | if (!str) |
222 | return 0; | |
223 | ||
b1019d5e | 224 | if (params.command == 'L') { |
13e27d76 MH |
225 | pr_warning("Warning: more than one --line options are" |
226 | " detected. Only the first one is valid.\n"); | |
227 | return 0; | |
228 | } | |
229 | ||
b1019d5e | 230 | params.command = opt->short_name; |
13e27d76 | 231 | ret = parse_line_range_desc(str, ¶ms.line_range); |
146a1439 MH |
232 | |
233 | return ret; | |
0eda7385 | 234 | } |
cf6eb489 | 235 | |
b1019d5e | 236 | static int opt_show_vars(const struct option *opt, |
1d037ca1 | 237 | const char *str, int unset __maybe_unused) |
cf6eb489 MH |
238 | { |
239 | struct perf_probe_event *pev = ¶ms.events[params.nevents]; | |
240 | int ret; | |
241 | ||
242 | if (!str) | |
243 | return 0; | |
244 | ||
245 | ret = parse_probe_event(str); | |
246 | if (!ret && pev->nargs != 0) { | |
247 | pr_err(" Error: '--vars' doesn't accept arguments.\n"); | |
248 | return -EINVAL; | |
249 | } | |
b1019d5e | 250 | params.command = opt->short_name; |
cf6eb489 MH |
251 | |
252 | return ret; | |
253 | } | |
3c42258c | 254 | #endif |
b1019d5e MH |
255 | static int opt_add_probe_event(const struct option *opt, |
256 | const char *str, int unset __maybe_unused) | |
257 | { | |
258 | if (str) { | |
259 | params.command = opt->short_name; | |
260 | return parse_probe_event(str); | |
261 | } | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static int opt_set_filter_with_command(const struct option *opt, | |
267 | const char *str, int unset) | |
9f7811d0 MH |
268 | { |
269 | if (!unset) | |
b1019d5e | 270 | params.command = opt->short_name; |
9f7811d0 MH |
271 | |
272 | if (str) | |
273 | return params_add_filter(str); | |
274 | ||
275 | return 0; | |
276 | } | |
bd09d7b5 | 277 | |
1d037ca1 IT |
278 | static int opt_set_filter(const struct option *opt __maybe_unused, |
279 | const char *str, int unset __maybe_unused) | |
bd09d7b5 | 280 | { |
b6a89643 MH |
281 | if (str) |
282 | return params_add_filter(str); | |
bd09d7b5 | 283 | |
b6a89643 | 284 | return 0; |
bd09d7b5 | 285 | } |
4ea42b18 | 286 | |
5a62257a | 287 | static int init_params(void) |
e53b00d3 | 288 | { |
5a62257a | 289 | return line_range__init(¶ms.line_range); |
e53b00d3 MH |
290 | } |
291 | ||
292 | static void cleanup_params(void) | |
293 | { | |
294 | int i; | |
295 | ||
296 | for (i = 0; i < params.nevents; i++) | |
297 | clear_perf_probe_event(params.events + i); | |
e53b00d3 MH |
298 | line_range__clear(¶ms.line_range); |
299 | free(params.target); | |
200802a4 | 300 | strfilter__delete(params.filter); |
e53b00d3 MH |
301 | memset(¶ms, 0, sizeof(params)); |
302 | } | |
303 | ||
b4bf1130 MH |
304 | static void pr_err_with_code(const char *msg, int err) |
305 | { | |
5f03cba4 MH |
306 | char sbuf[STRERR_BUFSIZE]; |
307 | ||
b4bf1130 | 308 | pr_err("%s", msg); |
5f03cba4 MH |
309 | pr_debug(" Reason: %s (Code: %d)", |
310 | strerror_r(-err, sbuf, sizeof(sbuf)), err); | |
b4bf1130 MH |
311 | pr_err("\n"); |
312 | } | |
313 | ||
b02137cc NK |
314 | static int perf_add_probe_events(struct perf_probe_event *pevs, int npevs) |
315 | { | |
316 | int ret; | |
317 | int i, k; | |
318 | const char *event = NULL, *group = NULL; | |
319 | ||
9bae1e8c NK |
320 | ret = init_probe_symbol_maps(pevs->uprobes); |
321 | if (ret < 0) | |
322 | return ret; | |
323 | ||
b02137cc NK |
324 | ret = convert_perf_probe_events(pevs, npevs); |
325 | if (ret < 0) | |
326 | goto out_cleanup; | |
327 | ||
328 | ret = apply_perf_probe_events(pevs, npevs); | |
329 | if (ret < 0) | |
330 | goto out_cleanup; | |
331 | ||
332 | for (i = k = 0; i < npevs; i++) | |
333 | k += pevs[i].ntevs; | |
334 | ||
335 | pr_info("Added new event%s\n", (k > 1) ? "s:" : ":"); | |
336 | for (i = 0; i < npevs; i++) { | |
337 | struct perf_probe_event *pev = &pevs[i]; | |
338 | ||
339 | for (k = 0; k < pev->ntevs; k++) { | |
340 | struct probe_trace_event *tev = &pev->tevs[k]; | |
341 | ||
342 | /* We use tev's name for showing new events */ | |
343 | show_perf_probe_event(tev->group, tev->event, pev, | |
344 | tev->point.module, false); | |
345 | ||
346 | /* Save the last valid name */ | |
347 | event = tev->event; | |
348 | group = tev->group; | |
349 | } | |
350 | } | |
351 | ||
352 | /* Note that it is possible to skip all events because of blacklist */ | |
353 | if (event) { | |
354 | /* Show how to use the event. */ | |
355 | pr_info("\nYou can now use it in all perf tools, such as:\n\n"); | |
356 | pr_info("\tperf record -e %s:%s -aR sleep 1\n\n", group, event); | |
357 | } | |
358 | ||
359 | out_cleanup: | |
360 | cleanup_perf_probe_events(pevs, npevs); | |
9bae1e8c | 361 | exit_probe_symbol_maps(); |
b02137cc NK |
362 | return ret; |
363 | } | |
364 | ||
e607f142 NK |
365 | static int perf_del_probe_events(struct strfilter *filter) |
366 | { | |
367 | int ret, ret2, ufd = -1, kfd = -1; | |
368 | char *str = strfilter__string(filter); | |
369 | struct strlist *klist = NULL, *ulist = NULL; | |
370 | struct str_node *ent; | |
371 | ||
372 | if (!str) | |
373 | return -EINVAL; | |
374 | ||
375 | pr_debug("Delete filter: \'%s\'\n", str); | |
376 | ||
377 | /* Get current event names */ | |
378 | ret = probe_file__open_both(&kfd, &ufd, PF_FL_RW); | |
379 | if (ret < 0) | |
380 | goto out; | |
381 | ||
382 | klist = strlist__new(NULL, NULL); | |
0fb18553 MH |
383 | ulist = strlist__new(NULL, NULL); |
384 | if (!klist || !ulist) { | |
385 | ret = -ENOMEM; | |
386 | goto out; | |
387 | } | |
e607f142 NK |
388 | |
389 | ret = probe_file__get_events(kfd, filter, klist); | |
390 | if (ret == 0) { | |
391 | strlist__for_each(ent, klist) | |
392 | pr_info("Removed event: %s\n", ent->s); | |
393 | ||
394 | ret = probe_file__del_strlist(kfd, klist); | |
395 | if (ret < 0) | |
396 | goto error; | |
397 | } | |
398 | ||
399 | ret2 = probe_file__get_events(ufd, filter, ulist); | |
400 | if (ret2 == 0) { | |
401 | strlist__for_each(ent, ulist) | |
402 | pr_info("Removed event: %s\n", ent->s); | |
403 | ||
404 | ret2 = probe_file__del_strlist(ufd, ulist); | |
405 | if (ret2 < 0) | |
406 | goto error; | |
407 | } | |
408 | ||
409 | if (ret == -ENOENT && ret2 == -ENOENT) | |
410 | pr_debug("\"%s\" does not hit any event.\n", str); | |
411 | /* Note that this is silently ignored */ | |
412 | ret = 0; | |
413 | ||
414 | error: | |
415 | if (kfd >= 0) | |
416 | close(kfd); | |
417 | if (ufd >= 0) | |
418 | close(ufd); | |
419 | out: | |
420 | strlist__delete(klist); | |
421 | strlist__delete(ulist); | |
422 | free(str); | |
423 | ||
424 | return ret; | |
425 | } | |
426 | ||
e53b00d3 MH |
427 | static int |
428 | __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) | |
11c4e4a3 ACM |
429 | { |
430 | const char * const probe_usage[] = { | |
431 | "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]", | |
432 | "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]", | |
433 | "perf probe [<options>] --del '[GROUP:]EVENT' ...", | |
b6a89643 | 434 | "perf probe --list [GROUP:]EVENT ...", |
89fe808a | 435 | #ifdef HAVE_DWARF_SUPPORT |
11c4e4a3 ACM |
436 | "perf probe [<options>] --line 'LINEDESC'", |
437 | "perf probe [<options>] --vars 'PROBEPOINT'", | |
f3ab481c | 438 | #endif |
b3ac032b | 439 | "perf probe [<options>] --funcs", |
11c4e4a3 | 440 | NULL |
b6a89643 | 441 | }; |
13dcbbc0 | 442 | struct option options[] = { |
c0555642 | 443 | OPT_INCR('v', "verbose", &verbose, |
89c69c0e | 444 | "be more verbose (show parsed arguments, etc)"), |
5e17b28f MH |
445 | OPT_BOOLEAN('q', "quiet", ¶ms.quiet, |
446 | "be quiet (do not show any mesages)"), | |
b6a89643 | 447 | OPT_CALLBACK_DEFAULT('l', "list", NULL, "[GROUP:]EVENT", |
b1019d5e MH |
448 | "list up probe events", |
449 | opt_set_filter_with_command, DEFAULT_LIST_FILTER), | |
fa28244d | 450 | OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.", |
b1019d5e | 451 | opt_set_filter_with_command), |
46ab4926 | 452 | OPT_CALLBACK('a', "add", NULL, |
89fe808a | 453 | #ifdef HAVE_DWARF_SUPPORT |
32cb0dd5 | 454 | "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT" |
48481938 | 455 | " [[NAME=]ARG ...]", |
4b4da7f7 | 456 | #else |
48481938 | 457 | "[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]", |
23e8ec0d | 458 | #endif |
4ea42b18 | 459 | "probe point definition, where\n" |
af663d75 MH |
460 | "\t\tGROUP:\tGroup name (optional)\n" |
461 | "\t\tEVENT:\tEvent name\n" | |
4ea42b18 | 462 | "\t\tFUNC:\tFunction name\n" |
2a9c8c36 | 463 | "\t\tOFF:\tOffset from function entry (in byte)\n" |
253977b0 | 464 | "\t\t%return:\tPut the probe at function return\n" |
89fe808a | 465 | #ifdef HAVE_DWARF_SUPPORT |
4ea42b18 | 466 | "\t\tSRC:\tSource code path\n" |
2a9c8c36 MH |
467 | "\t\tRL:\tRelative line number from function entry.\n" |
468 | "\t\tAL:\tAbsolute line number in file.\n" | |
469 | "\t\tPT:\tLazy expression of line code.\n" | |
4ea42b18 | 470 | "\t\tARG:\tProbe argument (local variable name or\n" |
50656eec | 471 | "\t\t\tkprobe-tracer argument format.)\n", |
4b4da7f7 MH |
472 | #else |
473 | "\t\tARG:\tProbe argument (kprobe-tracer argument format.)\n", | |
474 | #endif | |
253977b0 | 475 | opt_add_probe_event), |
ddb2f58f | 476 | OPT_BOOLEAN('f', "force", &probe_conf.force_add, "forcibly add events" |
d761b08b | 477 | " with existing name"), |
89fe808a | 478 | #ifdef HAVE_DWARF_SUPPORT |
631c9def | 479 | OPT_CALLBACK('L', "line", NULL, |
085ea739 | 480 | "FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]", |
631c9def | 481 | "Show source code lines.", opt_show_lines), |
cf6eb489 MH |
482 | OPT_CALLBACK('V', "vars", NULL, |
483 | "FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT", | |
484 | "Show accessible variables on PROBEDEF", opt_show_vars), | |
ddb2f58f | 485 | OPT_BOOLEAN('\0', "externs", &probe_conf.show_ext_vars, |
fb8c5a56 | 486 | "Show external variables too (with --vars only)"), |
349e8d26 HK |
487 | OPT_BOOLEAN('\0', "range", &probe_conf.show_location_range, |
488 | "Show variables location range in scope (with --vars only)"), | |
4b4da7f7 MH |
489 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
490 | "file", "vmlinux pathname"), | |
9ed7e1b8 CD |
491 | OPT_STRING('s', "source", &symbol_conf.source_prefix, |
492 | "directory", "path to kernel source"), | |
225466f1 SD |
493 | OPT_CALLBACK('m', "module", NULL, "modname|path", |
494 | "target module name (for online) or path (for offline)", | |
495 | opt_set_target), | |
6cfd1f68 MH |
496 | OPT_BOOLEAN('\0', "no-inlines", &probe_conf.no_inlines, |
497 | "Don't search inlined functions"), | |
631c9def | 498 | #endif |
f4d7da49 | 499 | OPT__DRY_RUN(&probe_event_dry_run), |
ddb2f58f | 500 | OPT_INTEGER('\0', "max-probes", &probe_conf.max_probes, |
ef4a3565 | 501 | "Set how many probe points can be found for a probe."), |
9f7811d0 MH |
502 | OPT_CALLBACK_DEFAULT('F', "funcs", NULL, "[FILTER]", |
503 | "Show potential probe-able functions.", | |
b1019d5e | 504 | opt_set_filter_with_command, DEFAULT_FUNC_FILTER), |
3c42258c MH |
505 | OPT_CALLBACK('\0', "filter", NULL, |
506 | "[!]FILTER", "Set a filter (with --vars/funcs only)\n" | |
507 | "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n" | |
508 | "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)", | |
509 | opt_set_filter), | |
225466f1 SD |
510 | OPT_CALLBACK('x', "exec", NULL, "executable|path", |
511 | "target executable name or path", opt_set_target), | |
35e17b24 | 512 | OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, |
4cdcc33d | 513 | "Enable symbol demangling"), |
763122ad AK |
514 | OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, |
515 | "Enable kernel symbol demangling"), | |
4ea42b18 | 516 | OPT_END() |
11c4e4a3 | 517 | }; |
146a1439 MH |
518 | int ret; |
519 | ||
13dcbbc0 NK |
520 | set_option_flag(options, 'a', "add", PARSE_OPT_EXCLUSIVE); |
521 | set_option_flag(options, 'd', "del", PARSE_OPT_EXCLUSIVE); | |
522 | set_option_flag(options, 'l', "list", PARSE_OPT_EXCLUSIVE); | |
523 | #ifdef HAVE_DWARF_SUPPORT | |
524 | set_option_flag(options, 'L', "line", PARSE_OPT_EXCLUSIVE); | |
525 | set_option_flag(options, 'V', "vars", PARSE_OPT_EXCLUSIVE); | |
526 | #endif | |
b3ac032b | 527 | set_option_flag(options, 'F', "funcs", PARSE_OPT_EXCLUSIVE); |
13dcbbc0 | 528 | |
4ea42b18 | 529 | argc = parse_options(argc, argv, options, probe_usage, |
46ab4926 | 530 | PARSE_OPT_STOP_AT_NON_OPTION); |
ce11a603 MH |
531 | if (argc > 0) { |
532 | if (strcmp(argv[0], "-") == 0) { | |
533 | pr_warning(" Error: '-' is not supported.\n"); | |
534 | usage_with_options(probe_usage, options); | |
535 | } | |
b1019d5e MH |
536 | if (params.command && params.command != 'a') { |
537 | pr_warning(" Error: another command except --add is set.\n"); | |
538 | usage_with_options(probe_usage, options); | |
539 | } | |
146a1439 MH |
540 | ret = parse_probe_event_argv(argc, argv); |
541 | if (ret < 0) { | |
b4bf1130 | 542 | pr_err_with_code(" Error: Command Parse Error.", ret); |
146a1439 MH |
543 | return ret; |
544 | } | |
b1019d5e | 545 | params.command = 'a'; |
ce11a603 | 546 | } |
46ab4926 | 547 | |
5e17b28f MH |
548 | if (params.quiet) { |
549 | if (verbose != 0) { | |
550 | pr_err(" Error: -v and -q are exclusive.\n"); | |
551 | return -EINVAL; | |
552 | } | |
553 | verbose = -1; | |
554 | } | |
555 | ||
ddb2f58f MH |
556 | if (probe_conf.max_probes == 0) |
557 | probe_conf.max_probes = MAX_PROBES; | |
ef4a3565 | 558 | |
fd930ff9 FBH |
559 | /* |
560 | * Only consider the user's kernel image path if given. | |
561 | */ | |
562 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
563 | ||
b1019d5e MH |
564 | switch (params.command) { |
565 | case 'l': | |
225466f1 SD |
566 | if (params.uprobes) { |
567 | pr_warning(" Error: Don't use --list with --exec.\n"); | |
568 | usage_with_options(probe_usage, options); | |
569 | } | |
b6a89643 | 570 | ret = show_perf_probe_events(params.filter); |
146a1439 | 571 | if (ret < 0) |
b4bf1130 | 572 | pr_err_with_code(" Error: Failed to show event list.", ret); |
146a1439 | 573 | return ret; |
b1019d5e | 574 | case 'F': |
225466f1 SD |
575 | ret = show_available_funcs(params.target, params.filter, |
576 | params.uprobes); | |
e80711ca | 577 | if (ret < 0) |
b4bf1130 | 578 | pr_err_with_code(" Error: Failed to show functions.", ret); |
e80711ca | 579 | return ret; |
89fe808a | 580 | #ifdef HAVE_DWARF_SUPPORT |
b1019d5e | 581 | case 'L': |
2b394bc4 MH |
582 | ret = show_line_range(¶ms.line_range, params.target, |
583 | params.uprobes); | |
146a1439 | 584 | if (ret < 0) |
b4bf1130 | 585 | pr_err_with_code(" Error: Failed to show lines.", ret); |
146a1439 | 586 | return ret; |
b1019d5e | 587 | case 'V': |
bd09d7b5 MH |
588 | if (!params.filter) |
589 | params.filter = strfilter__new(DEFAULT_VAR_FILTER, | |
590 | NULL); | |
591 | ||
cf6eb489 | 592 | ret = show_available_vars(params.events, params.nevents, |
ddb2f58f | 593 | params.filter); |
cf6eb489 | 594 | if (ret < 0) |
b4bf1130 | 595 | pr_err_with_code(" Error: Failed to show vars.", ret); |
cf6eb489 | 596 | return ret; |
631c9def | 597 | #endif |
b1019d5e | 598 | case 'd': |
e607f142 | 599 | ret = perf_del_probe_events(params.filter); |
146a1439 | 600 | if (ret < 0) { |
b4bf1130 | 601 | pr_err_with_code(" Error: Failed to delete events.", ret); |
146a1439 MH |
602 | return ret; |
603 | } | |
b1019d5e MH |
604 | break; |
605 | case 'a': | |
8cb0aa4c MH |
606 | /* Ensure the last given target is used */ |
607 | if (params.target && !params.target_used) { | |
608 | pr_warning(" Error: -x/-m must follow the probe definitions.\n"); | |
609 | usage_with_options(probe_usage, options); | |
610 | } | |
611 | ||
b02137cc | 612 | ret = perf_add_probe_events(params.events, params.nevents); |
146a1439 | 613 | if (ret < 0) { |
b4bf1130 | 614 | pr_err_with_code(" Error: Failed to add events.", ret); |
146a1439 MH |
615 | return ret; |
616 | } | |
b1019d5e MH |
617 | break; |
618 | default: | |
619 | usage_with_options(probe_usage, options); | |
146a1439 | 620 | } |
4ea42b18 MH |
621 | return 0; |
622 | } | |
e53b00d3 MH |
623 | |
624 | int cmd_probe(int argc, const char **argv, const char *prefix) | |
625 | { | |
626 | int ret; | |
627 | ||
5a62257a MH |
628 | ret = init_params(); |
629 | if (!ret) { | |
630 | ret = __cmd_probe(argc, argv, prefix); | |
631 | cleanup_params(); | |
632 | } | |
e53b00d3 | 633 | |
9bc9f3b6 | 634 | return ret < 0 ? ret : 0; |
e53b00d3 | 635 | } |