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" |
4b6ab94e | 40 | #include <subcmd/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 "!_*" |
1f3736c9 | 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; | |
225466f1 SD |
185 | else if (!strcmp(opt->long_name, "module")) |
186 | params.uprobes = false; | |
225466f1 SD |
187 | else |
188 | return ret; | |
189 | ||
8a613d40 MH |
190 | /* Expand given path to absolute path, except for modulename */ |
191 | if (params.uprobes || strchr(str, '/')) { | |
192 | tmp = realpath(str, NULL); | |
193 | if (!tmp) { | |
194 | pr_warning("Failed to get the absolute path of %s: %m\n", str); | |
195 | return ret; | |
196 | } | |
197 | } else { | |
198 | tmp = strdup(str); | |
199 | if (!tmp) | |
200 | return -ENOMEM; | |
201 | } | |
7afb3fab | 202 | free(params.target); |
8a613d40 | 203 | params.target = tmp; |
8cb0aa4c | 204 | params.target_used = false; |
225466f1 SD |
205 | ret = 0; |
206 | } | |
207 | ||
208 | return ret; | |
209 | } | |
210 | ||
b1019d5e MH |
211 | /* Command option callbacks */ |
212 | ||
89fe808a | 213 | #ifdef HAVE_DWARF_SUPPORT |
b1019d5e | 214 | static int opt_show_lines(const struct option *opt, |
1d037ca1 | 215 | const char *str, int unset __maybe_unused) |
0eda7385 | 216 | { |
146a1439 MH |
217 | int ret = 0; |
218 | ||
13e27d76 MH |
219 | if (!str) |
220 | return 0; | |
221 | ||
b1019d5e | 222 | if (params.command == 'L') { |
13e27d76 MH |
223 | pr_warning("Warning: more than one --line options are" |
224 | " detected. Only the first one is valid.\n"); | |
225 | return 0; | |
226 | } | |
227 | ||
b1019d5e | 228 | params.command = opt->short_name; |
13e27d76 | 229 | ret = parse_line_range_desc(str, ¶ms.line_range); |
146a1439 MH |
230 | |
231 | return ret; | |
0eda7385 | 232 | } |
cf6eb489 | 233 | |
b1019d5e | 234 | static int opt_show_vars(const struct option *opt, |
1d037ca1 | 235 | const char *str, int unset __maybe_unused) |
cf6eb489 MH |
236 | { |
237 | struct perf_probe_event *pev = ¶ms.events[params.nevents]; | |
238 | int ret; | |
239 | ||
240 | if (!str) | |
241 | return 0; | |
242 | ||
243 | ret = parse_probe_event(str); | |
244 | if (!ret && pev->nargs != 0) { | |
245 | pr_err(" Error: '--vars' doesn't accept arguments.\n"); | |
246 | return -EINVAL; | |
247 | } | |
b1019d5e | 248 | params.command = opt->short_name; |
cf6eb489 MH |
249 | |
250 | return ret; | |
251 | } | |
48e1cab1 WN |
252 | #else |
253 | # define opt_show_lines NULL | |
254 | # define opt_show_vars NULL | |
3c42258c | 255 | #endif |
b1019d5e MH |
256 | static int opt_add_probe_event(const struct option *opt, |
257 | const char *str, int unset __maybe_unused) | |
258 | { | |
259 | if (str) { | |
260 | params.command = opt->short_name; | |
261 | return parse_probe_event(str); | |
262 | } | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | static int opt_set_filter_with_command(const struct option *opt, | |
268 | const char *str, int unset) | |
9f7811d0 MH |
269 | { |
270 | if (!unset) | |
b1019d5e | 271 | params.command = opt->short_name; |
9f7811d0 MH |
272 | |
273 | if (str) | |
274 | return params_add_filter(str); | |
275 | ||
276 | return 0; | |
277 | } | |
bd09d7b5 | 278 | |
1d037ca1 IT |
279 | static int opt_set_filter(const struct option *opt __maybe_unused, |
280 | const char *str, int unset __maybe_unused) | |
bd09d7b5 | 281 | { |
b6a89643 MH |
282 | if (str) |
283 | return params_add_filter(str); | |
bd09d7b5 | 284 | |
b6a89643 | 285 | return 0; |
bd09d7b5 | 286 | } |
4ea42b18 | 287 | |
5a62257a | 288 | static int init_params(void) |
e53b00d3 | 289 | { |
5a62257a | 290 | return line_range__init(¶ms.line_range); |
e53b00d3 MH |
291 | } |
292 | ||
293 | static void cleanup_params(void) | |
294 | { | |
295 | int i; | |
296 | ||
297 | for (i = 0; i < params.nevents; i++) | |
298 | clear_perf_probe_event(params.events + i); | |
e53b00d3 MH |
299 | line_range__clear(¶ms.line_range); |
300 | free(params.target); | |
200802a4 | 301 | strfilter__delete(params.filter); |
e53b00d3 MH |
302 | memset(¶ms, 0, sizeof(params)); |
303 | } | |
304 | ||
b4bf1130 MH |
305 | static void pr_err_with_code(const char *msg, int err) |
306 | { | |
5f03cba4 MH |
307 | char sbuf[STRERR_BUFSIZE]; |
308 | ||
b4bf1130 | 309 | pr_err("%s", msg); |
5f03cba4 MH |
310 | pr_debug(" Reason: %s (Code: %d)", |
311 | strerror_r(-err, sbuf, sizeof(sbuf)), err); | |
b4bf1130 MH |
312 | pr_err("\n"); |
313 | } | |
314 | ||
b02137cc NK |
315 | static int perf_add_probe_events(struct perf_probe_event *pevs, int npevs) |
316 | { | |
317 | int ret; | |
318 | int i, k; | |
319 | const char *event = NULL, *group = NULL; | |
320 | ||
9bae1e8c NK |
321 | ret = init_probe_symbol_maps(pevs->uprobes); |
322 | if (ret < 0) | |
323 | return ret; | |
324 | ||
b02137cc NK |
325 | ret = convert_perf_probe_events(pevs, npevs); |
326 | if (ret < 0) | |
327 | goto out_cleanup; | |
328 | ||
329 | ret = apply_perf_probe_events(pevs, npevs); | |
330 | if (ret < 0) | |
331 | goto out_cleanup; | |
332 | ||
333 | for (i = k = 0; i < npevs; i++) | |
334 | k += pevs[i].ntevs; | |
335 | ||
336 | pr_info("Added new event%s\n", (k > 1) ? "s:" : ":"); | |
337 | for (i = 0; i < npevs; i++) { | |
338 | struct perf_probe_event *pev = &pevs[i]; | |
339 | ||
340 | for (k = 0; k < pev->ntevs; k++) { | |
341 | struct probe_trace_event *tev = &pev->tevs[k]; | |
342 | ||
343 | /* We use tev's name for showing new events */ | |
344 | show_perf_probe_event(tev->group, tev->event, pev, | |
345 | tev->point.module, false); | |
346 | ||
347 | /* Save the last valid name */ | |
348 | event = tev->event; | |
349 | group = tev->group; | |
350 | } | |
351 | } | |
352 | ||
353 | /* Note that it is possible to skip all events because of blacklist */ | |
354 | if (event) { | |
355 | /* Show how to use the event. */ | |
356 | pr_info("\nYou can now use it in all perf tools, such as:\n\n"); | |
357 | pr_info("\tperf record -e %s:%s -aR sleep 1\n\n", group, event); | |
358 | } | |
359 | ||
360 | out_cleanup: | |
361 | cleanup_perf_probe_events(pevs, npevs); | |
9bae1e8c | 362 | exit_probe_symbol_maps(); |
b02137cc NK |
363 | return ret; |
364 | } | |
365 | ||
e607f142 NK |
366 | static int perf_del_probe_events(struct strfilter *filter) |
367 | { | |
368 | int ret, ret2, ufd = -1, kfd = -1; | |
369 | char *str = strfilter__string(filter); | |
370 | struct strlist *klist = NULL, *ulist = NULL; | |
371 | struct str_node *ent; | |
372 | ||
373 | if (!str) | |
374 | return -EINVAL; | |
375 | ||
376 | pr_debug("Delete filter: \'%s\'\n", str); | |
377 | ||
378 | /* Get current event names */ | |
379 | ret = probe_file__open_both(&kfd, &ufd, PF_FL_RW); | |
380 | if (ret < 0) | |
381 | goto out; | |
382 | ||
383 | klist = strlist__new(NULL, NULL); | |
0fb18553 MH |
384 | ulist = strlist__new(NULL, NULL); |
385 | if (!klist || !ulist) { | |
386 | ret = -ENOMEM; | |
387 | goto out; | |
388 | } | |
e607f142 NK |
389 | |
390 | ret = probe_file__get_events(kfd, filter, klist); | |
391 | if (ret == 0) { | |
602a1f4d | 392 | strlist__for_each_entry(ent, klist) |
e607f142 NK |
393 | pr_info("Removed event: %s\n", ent->s); |
394 | ||
395 | ret = probe_file__del_strlist(kfd, klist); | |
396 | if (ret < 0) | |
397 | goto error; | |
398 | } | |
399 | ||
400 | ret2 = probe_file__get_events(ufd, filter, ulist); | |
401 | if (ret2 == 0) { | |
602a1f4d | 402 | strlist__for_each_entry(ent, ulist) |
e607f142 NK |
403 | pr_info("Removed event: %s\n", ent->s); |
404 | ||
405 | ret2 = probe_file__del_strlist(ufd, ulist); | |
406 | if (ret2 < 0) | |
407 | goto error; | |
408 | } | |
409 | ||
410 | if (ret == -ENOENT && ret2 == -ENOENT) | |
411 | pr_debug("\"%s\" does not hit any event.\n", str); | |
412 | /* Note that this is silently ignored */ | |
413 | ret = 0; | |
414 | ||
415 | error: | |
416 | if (kfd >= 0) | |
417 | close(kfd); | |
418 | if (ufd >= 0) | |
419 | close(ufd); | |
420 | out: | |
421 | strlist__delete(klist); | |
422 | strlist__delete(ulist); | |
423 | free(str); | |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
e53b00d3 MH |
428 | static int |
429 | __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) | |
11c4e4a3 ACM |
430 | { |
431 | const char * const probe_usage[] = { | |
432 | "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]", | |
433 | "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]", | |
434 | "perf probe [<options>] --del '[GROUP:]EVENT' ...", | |
b6a89643 | 435 | "perf probe --list [GROUP:]EVENT ...", |
89fe808a | 436 | #ifdef HAVE_DWARF_SUPPORT |
11c4e4a3 ACM |
437 | "perf probe [<options>] --line 'LINEDESC'", |
438 | "perf probe [<options>] --vars 'PROBEPOINT'", | |
f3ab481c | 439 | #endif |
b3ac032b | 440 | "perf probe [<options>] --funcs", |
11c4e4a3 | 441 | NULL |
b6a89643 | 442 | }; |
13dcbbc0 | 443 | struct option options[] = { |
c0555642 | 444 | OPT_INCR('v', "verbose", &verbose, |
89c69c0e | 445 | "be more verbose (show parsed arguments, etc)"), |
5e17b28f MH |
446 | OPT_BOOLEAN('q', "quiet", ¶ms.quiet, |
447 | "be quiet (do not show any mesages)"), | |
b6a89643 | 448 | OPT_CALLBACK_DEFAULT('l', "list", NULL, "[GROUP:]EVENT", |
b1019d5e MH |
449 | "list up probe events", |
450 | opt_set_filter_with_command, DEFAULT_LIST_FILTER), | |
fa28244d | 451 | OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.", |
b1019d5e | 452 | opt_set_filter_with_command), |
46ab4926 | 453 | OPT_CALLBACK('a', "add", NULL, |
89fe808a | 454 | #ifdef HAVE_DWARF_SUPPORT |
32cb0dd5 | 455 | "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT" |
48481938 | 456 | " [[NAME=]ARG ...]", |
4b4da7f7 | 457 | #else |
48481938 | 458 | "[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]", |
23e8ec0d | 459 | #endif |
4ea42b18 | 460 | "probe point definition, where\n" |
af663d75 MH |
461 | "\t\tGROUP:\tGroup name (optional)\n" |
462 | "\t\tEVENT:\tEvent name\n" | |
4ea42b18 | 463 | "\t\tFUNC:\tFunction name\n" |
2a9c8c36 | 464 | "\t\tOFF:\tOffset from function entry (in byte)\n" |
253977b0 | 465 | "\t\t%return:\tPut the probe at function return\n" |
89fe808a | 466 | #ifdef HAVE_DWARF_SUPPORT |
4ea42b18 | 467 | "\t\tSRC:\tSource code path\n" |
2a9c8c36 MH |
468 | "\t\tRL:\tRelative line number from function entry.\n" |
469 | "\t\tAL:\tAbsolute line number in file.\n" | |
470 | "\t\tPT:\tLazy expression of line code.\n" | |
4ea42b18 | 471 | "\t\tARG:\tProbe argument (local variable name or\n" |
50656eec | 472 | "\t\t\tkprobe-tracer argument format.)\n", |
4b4da7f7 MH |
473 | #else |
474 | "\t\tARG:\tProbe argument (kprobe-tracer argument format.)\n", | |
475 | #endif | |
253977b0 | 476 | opt_add_probe_event), |
ddb2f58f | 477 | OPT_BOOLEAN('f', "force", &probe_conf.force_add, "forcibly add events" |
d761b08b | 478 | " with existing name"), |
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"), | |
6cfd1f68 MH |
493 | OPT_BOOLEAN('\0', "no-inlines", &probe_conf.no_inlines, |
494 | "Don't search inlined functions"), | |
f4d7da49 | 495 | OPT__DRY_RUN(&probe_event_dry_run), |
ddb2f58f | 496 | OPT_INTEGER('\0', "max-probes", &probe_conf.max_probes, |
ef4a3565 | 497 | "Set how many probe points can be found for a probe."), |
9f7811d0 MH |
498 | OPT_CALLBACK_DEFAULT('F', "funcs", NULL, "[FILTER]", |
499 | "Show potential probe-able functions.", | |
b1019d5e | 500 | opt_set_filter_with_command, DEFAULT_FUNC_FILTER), |
3c42258c MH |
501 | OPT_CALLBACK('\0', "filter", NULL, |
502 | "[!]FILTER", "Set a filter (with --vars/funcs only)\n" | |
503 | "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n" | |
504 | "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)", | |
505 | opt_set_filter), | |
225466f1 SD |
506 | OPT_CALLBACK('x', "exec", NULL, "executable|path", |
507 | "target executable name or path", opt_set_target), | |
1a8ac29c MH |
508 | OPT_CALLBACK('m', "module", NULL, "modname|path", |
509 | "target module name (for online) or path (for offline)", | |
510 | opt_set_target), | |
35e17b24 | 511 | OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, |
4cdcc33d | 512 | "Enable symbol demangling"), |
763122ad AK |
513 | OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, |
514 | "Enable kernel symbol demangling"), | |
2fd457a3 | 515 | OPT_BOOLEAN(0, "cache", &probe_conf.cache, "Manipulate probe cache"), |
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); | |
48e1cab1 WN |
526 | #else |
527 | # define set_nobuild(s, l, c) set_option_nobuild(options, s, l, "NO_DWARF=1", c) | |
528 | set_nobuild('L', "line", false); | |
529 | set_nobuild('V', "vars", false); | |
530 | set_nobuild('\0', "externs", false); | |
531 | set_nobuild('\0', "range", false); | |
532 | set_nobuild('k', "vmlinux", true); | |
533 | set_nobuild('s', "source", true); | |
534 | set_nobuild('\0', "no-inlines", true); | |
535 | # undef set_nobuild | |
13dcbbc0 | 536 | #endif |
b3ac032b | 537 | set_option_flag(options, 'F', "funcs", PARSE_OPT_EXCLUSIVE); |
13dcbbc0 | 538 | |
4ea42b18 | 539 | argc = parse_options(argc, argv, options, probe_usage, |
46ab4926 | 540 | PARSE_OPT_STOP_AT_NON_OPTION); |
ce11a603 MH |
541 | if (argc > 0) { |
542 | if (strcmp(argv[0], "-") == 0) { | |
c7118369 NK |
543 | usage_with_options_msg(probe_usage, options, |
544 | "'-' is not supported.\n"); | |
ce11a603 | 545 | } |
b1019d5e | 546 | if (params.command && params.command != 'a') { |
c7118369 NK |
547 | usage_with_options_msg(probe_usage, options, |
548 | "another command except --add is set.\n"); | |
b1019d5e | 549 | } |
146a1439 MH |
550 | ret = parse_probe_event_argv(argc, argv); |
551 | if (ret < 0) { | |
b4bf1130 | 552 | pr_err_with_code(" Error: Command Parse Error.", ret); |
146a1439 MH |
553 | return ret; |
554 | } | |
b1019d5e | 555 | params.command = 'a'; |
ce11a603 | 556 | } |
46ab4926 | 557 | |
5e17b28f MH |
558 | if (params.quiet) { |
559 | if (verbose != 0) { | |
560 | pr_err(" Error: -v and -q are exclusive.\n"); | |
561 | return -EINVAL; | |
562 | } | |
563 | verbose = -1; | |
564 | } | |
565 | ||
ddb2f58f MH |
566 | if (probe_conf.max_probes == 0) |
567 | probe_conf.max_probes = MAX_PROBES; | |
ef4a3565 | 568 | |
fd930ff9 FBH |
569 | /* |
570 | * Only consider the user's kernel image path if given. | |
571 | */ | |
572 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
573 | ||
b1019d5e MH |
574 | switch (params.command) { |
575 | case 'l': | |
225466f1 | 576 | if (params.uprobes) { |
c7118369 NK |
577 | pr_err(" Error: Don't use --list with --exec.\n"); |
578 | parse_options_usage(probe_usage, options, "l", true); | |
579 | parse_options_usage(NULL, options, "x", true); | |
580 | return -EINVAL; | |
225466f1 | 581 | } |
b6a89643 | 582 | ret = show_perf_probe_events(params.filter); |
146a1439 | 583 | if (ret < 0) |
b4bf1130 | 584 | pr_err_with_code(" Error: Failed to show event list.", ret); |
146a1439 | 585 | return ret; |
b1019d5e | 586 | case 'F': |
225466f1 SD |
587 | ret = show_available_funcs(params.target, params.filter, |
588 | params.uprobes); | |
e80711ca | 589 | if (ret < 0) |
b4bf1130 | 590 | pr_err_with_code(" Error: Failed to show functions.", ret); |
e80711ca | 591 | return ret; |
89fe808a | 592 | #ifdef HAVE_DWARF_SUPPORT |
b1019d5e | 593 | case 'L': |
2b394bc4 MH |
594 | ret = show_line_range(¶ms.line_range, params.target, |
595 | params.uprobes); | |
146a1439 | 596 | if (ret < 0) |
b4bf1130 | 597 | pr_err_with_code(" Error: Failed to show lines.", ret); |
146a1439 | 598 | return ret; |
b1019d5e | 599 | case 'V': |
bd09d7b5 MH |
600 | if (!params.filter) |
601 | params.filter = strfilter__new(DEFAULT_VAR_FILTER, | |
602 | NULL); | |
603 | ||
cf6eb489 | 604 | ret = show_available_vars(params.events, params.nevents, |
ddb2f58f | 605 | params.filter); |
cf6eb489 | 606 | if (ret < 0) |
b4bf1130 | 607 | pr_err_with_code(" Error: Failed to show vars.", ret); |
cf6eb489 | 608 | return ret; |
631c9def | 609 | #endif |
b1019d5e | 610 | case 'd': |
e607f142 | 611 | ret = perf_del_probe_events(params.filter); |
146a1439 | 612 | if (ret < 0) { |
b4bf1130 | 613 | pr_err_with_code(" Error: Failed to delete events.", ret); |
146a1439 MH |
614 | return ret; |
615 | } | |
b1019d5e MH |
616 | break; |
617 | case 'a': | |
8cb0aa4c MH |
618 | /* Ensure the last given target is used */ |
619 | if (params.target && !params.target_used) { | |
c7118369 NK |
620 | pr_err(" Error: -x/-m must follow the probe definitions.\n"); |
621 | parse_options_usage(probe_usage, options, "m", true); | |
622 | parse_options_usage(NULL, options, "x", true); | |
623 | return -EINVAL; | |
8cb0aa4c MH |
624 | } |
625 | ||
b02137cc | 626 | ret = perf_add_probe_events(params.events, params.nevents); |
146a1439 | 627 | if (ret < 0) { |
b4bf1130 | 628 | pr_err_with_code(" Error: Failed to add events.", ret); |
146a1439 MH |
629 | return ret; |
630 | } | |
b1019d5e MH |
631 | break; |
632 | default: | |
633 | usage_with_options(probe_usage, options); | |
146a1439 | 634 | } |
4ea42b18 MH |
635 | return 0; |
636 | } | |
e53b00d3 MH |
637 | |
638 | int cmd_probe(int argc, const char **argv, const char *prefix) | |
639 | { | |
640 | int ret; | |
641 | ||
5a62257a MH |
642 | ret = init_params(); |
643 | if (!ret) { | |
644 | ret = __cmd_probe(argc, argv, prefix); | |
645 | cleanup_params(); | |
646 | } | |
e53b00d3 | 647 | |
9bc9f3b6 | 648 | return ret < 0 ? ret : 0; |
e53b00d3 | 649 | } |