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" |
553873e1 | 40 | #include <api/fs/debugfs.h> |
4ea42b18 | 41 | #include "util/parse-options.h" |
4ea42b18 | 42 | #include "util/probe-finder.h" |
50656eec | 43 | #include "util/probe-event.h" |
4ea42b18 | 44 | |
bd09d7b5 | 45 | #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*" |
3c42258c | 46 | #define DEFAULT_FUNC_FILTER "!_*" |
4ea42b18 MH |
47 | |
48 | /* Session management structure */ | |
49 | static struct { | |
fac13fd5 | 50 | bool list_events; |
d761b08b | 51 | bool force_add; |
631c9def | 52 | bool show_lines; |
cf6eb489 | 53 | bool show_vars; |
fb8c5a56 | 54 | bool show_ext_vars; |
e80711ca | 55 | bool show_funcs; |
cf6eb489 | 56 | bool mod_events; |
225466f1 | 57 | bool uprobes; |
5e17b28f | 58 | bool quiet; |
8cb0aa4c | 59 | bool target_used; |
4235b045 MH |
60 | int nevents; |
61 | struct perf_probe_event events[MAX_PROBES]; | |
fa28244d | 62 | struct strlist *dellist; |
631c9def | 63 | struct line_range line_range; |
e53b00d3 | 64 | char *target; |
ef4a3565 | 65 | int max_probe_points; |
bd09d7b5 | 66 | struct strfilter *filter; |
12a1fadb | 67 | } params; |
4ea42b18 | 68 | |
253977b0 | 69 | /* Parse an event definition. Note that any error must die. */ |
146a1439 | 70 | static int parse_probe_event(const char *str) |
4ea42b18 | 71 | { |
4235b045 | 72 | struct perf_probe_event *pev = ¶ms.events[params.nevents]; |
146a1439 | 73 | int ret; |
4ea42b18 | 74 | |
4235b045 | 75 | pr_debug("probe-definition(%d): %s\n", params.nevents, str); |
8a7ddad8 ACM |
76 | if (++params.nevents == MAX_PROBES) { |
77 | pr_err("Too many probes (> %d) were specified.", MAX_PROBES); | |
78 | return -1; | |
79 | } | |
4ea42b18 | 80 | |
225466f1 | 81 | pev->uprobes = params.uprobes; |
7afb3fab MH |
82 | if (params.target) { |
83 | pev->target = strdup(params.target); | |
84 | if (!pev->target) | |
85 | return -ENOMEM; | |
8cb0aa4c | 86 | params.target_used = true; |
7afb3fab | 87 | } |
225466f1 | 88 | |
4235b045 | 89 | /* Parse a perf-probe command into event */ |
146a1439 | 90 | ret = parse_perf_probe_command(str, pev); |
4235b045 | 91 | pr_debug("%d arguments\n", pev->nargs); |
146a1439 MH |
92 | |
93 | return ret; | |
46ab4926 MH |
94 | } |
95 | ||
73eff9f5 SD |
96 | static int set_target(const char *ptr) |
97 | { | |
98 | int found = 0; | |
99 | const char *buf; | |
100 | ||
101 | /* | |
102 | * The first argument after options can be an absolute path | |
103 | * to an executable / library or kernel module. | |
104 | * | |
105 | * TODO: Support relative path, and $PATH, $LD_LIBRARY_PATH, | |
106 | * short module name. | |
107 | */ | |
108 | if (!params.target && ptr && *ptr == '/') { | |
e53b00d3 MH |
109 | params.target = strdup(ptr); |
110 | if (!params.target) | |
111 | return -ENOMEM; | |
8cb0aa4c | 112 | params.target_used = false; |
e53b00d3 | 113 | |
73eff9f5 SD |
114 | found = 1; |
115 | buf = ptr + (strlen(ptr) - 3); | |
116 | ||
117 | if (strcmp(buf, ".ko")) | |
118 | params.uprobes = true; | |
119 | ||
120 | } | |
121 | ||
122 | return found; | |
123 | } | |
124 | ||
146a1439 | 125 | static int parse_probe_event_argv(int argc, const char **argv) |
d1bde3f7 | 126 | { |
73eff9f5 | 127 | int i, len, ret, found_target; |
d1bde3f7 MH |
128 | char *buf; |
129 | ||
73eff9f5 | 130 | found_target = set_target(argv[0]); |
e53b00d3 MH |
131 | if (found_target < 0) |
132 | return found_target; | |
133 | ||
73eff9f5 SD |
134 | if (found_target && argc == 1) |
135 | return 0; | |
136 | ||
d1bde3f7 MH |
137 | /* Bind up rest arguments */ |
138 | len = 0; | |
73eff9f5 SD |
139 | for (i = 0; i < argc; i++) { |
140 | if (i == 0 && found_target) | |
141 | continue; | |
142 | ||
d1bde3f7 | 143 | len += strlen(argv[i]) + 1; |
73eff9f5 | 144 | } |
8a7ddad8 ACM |
145 | buf = zalloc(len + 1); |
146 | if (buf == NULL) | |
147 | return -ENOMEM; | |
d1bde3f7 | 148 | len = 0; |
73eff9f5 SD |
149 | for (i = 0; i < argc; i++) { |
150 | if (i == 0 && found_target) | |
151 | continue; | |
152 | ||
d1bde3f7 | 153 | len += sprintf(&buf[len], "%s ", argv[i]); |
73eff9f5 | 154 | } |
cf6eb489 | 155 | params.mod_events = true; |
146a1439 | 156 | ret = parse_probe_event(buf); |
d1bde3f7 | 157 | free(buf); |
146a1439 | 158 | return ret; |
d1bde3f7 MH |
159 | } |
160 | ||
1d037ca1 IT |
161 | static int opt_add_probe_event(const struct option *opt __maybe_unused, |
162 | const char *str, int unset __maybe_unused) | |
46ab4926 | 163 | { |
cf6eb489 MH |
164 | if (str) { |
165 | params.mod_events = true; | |
146a1439 | 166 | return parse_probe_event(str); |
cf6eb489 | 167 | } else |
146a1439 | 168 | return 0; |
4ea42b18 MH |
169 | } |
170 | ||
1d037ca1 IT |
171 | static int opt_del_probe_event(const struct option *opt __maybe_unused, |
172 | const char *str, int unset __maybe_unused) | |
fa28244d MH |
173 | { |
174 | if (str) { | |
cf6eb489 | 175 | params.mod_events = true; |
12a1fadb MH |
176 | if (!params.dellist) |
177 | params.dellist = strlist__new(true, NULL); | |
178 | strlist__add(params.dellist, str); | |
fa28244d MH |
179 | } |
180 | return 0; | |
181 | } | |
182 | ||
225466f1 | 183 | static int opt_set_target(const struct option *opt, const char *str, |
1d037ca1 | 184 | int unset __maybe_unused) |
225466f1 SD |
185 | { |
186 | int ret = -ENOENT; | |
8a613d40 | 187 | char *tmp; |
225466f1 | 188 | |
7afb3fab | 189 | if (str) { |
225466f1 SD |
190 | if (!strcmp(opt->long_name, "exec")) |
191 | params.uprobes = true; | |
89fe808a | 192 | #ifdef HAVE_DWARF_SUPPORT |
225466f1 SD |
193 | else if (!strcmp(opt->long_name, "module")) |
194 | params.uprobes = false; | |
195 | #endif | |
196 | else | |
197 | return ret; | |
198 | ||
8a613d40 MH |
199 | /* Expand given path to absolute path, except for modulename */ |
200 | if (params.uprobes || strchr(str, '/')) { | |
201 | tmp = realpath(str, NULL); | |
202 | if (!tmp) { | |
203 | pr_warning("Failed to get the absolute path of %s: %m\n", str); | |
204 | return ret; | |
205 | } | |
206 | } else { | |
207 | tmp = strdup(str); | |
208 | if (!tmp) | |
209 | return -ENOMEM; | |
210 | } | |
7afb3fab | 211 | free(params.target); |
8a613d40 | 212 | params.target = tmp; |
8cb0aa4c | 213 | params.target_used = false; |
225466f1 SD |
214 | ret = 0; |
215 | } | |
216 | ||
217 | return ret; | |
218 | } | |
219 | ||
89fe808a | 220 | #ifdef HAVE_DWARF_SUPPORT |
1d037ca1 IT |
221 | static int opt_show_lines(const struct option *opt __maybe_unused, |
222 | const char *str, int unset __maybe_unused) | |
0eda7385 | 223 | { |
146a1439 MH |
224 | int ret = 0; |
225 | ||
13e27d76 MH |
226 | if (!str) |
227 | return 0; | |
228 | ||
229 | if (params.show_lines) { | |
230 | pr_warning("Warning: more than one --line options are" | |
231 | " detected. Only the first one is valid.\n"); | |
232 | return 0; | |
233 | } | |
234 | ||
12a1fadb | 235 | params.show_lines = true; |
13e27d76 | 236 | ret = parse_line_range_desc(str, ¶ms.line_range); |
146a1439 MH |
237 | |
238 | return ret; | |
0eda7385 | 239 | } |
cf6eb489 | 240 | |
1d037ca1 IT |
241 | static int opt_show_vars(const struct option *opt __maybe_unused, |
242 | const char *str, int unset __maybe_unused) | |
cf6eb489 MH |
243 | { |
244 | struct perf_probe_event *pev = ¶ms.events[params.nevents]; | |
245 | int ret; | |
246 | ||
247 | if (!str) | |
248 | return 0; | |
249 | ||
250 | ret = parse_probe_event(str); | |
251 | if (!ret && pev->nargs != 0) { | |
252 | pr_err(" Error: '--vars' doesn't accept arguments.\n"); | |
253 | return -EINVAL; | |
254 | } | |
255 | params.show_vars = true; | |
256 | ||
257 | return ret; | |
258 | } | |
3c42258c | 259 | #endif |
bd09d7b5 | 260 | |
1d037ca1 IT |
261 | static int opt_set_filter(const struct option *opt __maybe_unused, |
262 | const char *str, int unset __maybe_unused) | |
bd09d7b5 MH |
263 | { |
264 | const char *err; | |
265 | ||
266 | if (str) { | |
267 | pr_debug2("Set filter: %s\n", str); | |
268 | if (params.filter) | |
269 | strfilter__delete(params.filter); | |
270 | params.filter = strfilter__new(str, &err); | |
271 | if (!params.filter) { | |
823c7164 | 272 | pr_err("Filter parse error at %td.\n", err - str + 1); |
bd09d7b5 MH |
273 | pr_err("Source: \"%s\"\n", str); |
274 | pr_err(" %*c\n", (int)(err - str + 1), '^'); | |
275 | return -EINVAL; | |
276 | } | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
4ea42b18 | 281 | |
5a62257a | 282 | static int init_params(void) |
e53b00d3 | 283 | { |
5a62257a | 284 | return line_range__init(¶ms.line_range); |
e53b00d3 MH |
285 | } |
286 | ||
287 | static void cleanup_params(void) | |
288 | { | |
289 | int i; | |
290 | ||
291 | for (i = 0; i < params.nevents; i++) | |
292 | clear_perf_probe_event(params.events + i); | |
293 | if (params.dellist) | |
294 | strlist__delete(params.dellist); | |
295 | line_range__clear(¶ms.line_range); | |
296 | free(params.target); | |
297 | if (params.filter) | |
298 | strfilter__delete(params.filter); | |
299 | memset(¶ms, 0, sizeof(params)); | |
300 | } | |
301 | ||
b4bf1130 MH |
302 | static void pr_err_with_code(const char *msg, int err) |
303 | { | |
5f03cba4 MH |
304 | char sbuf[STRERR_BUFSIZE]; |
305 | ||
b4bf1130 | 306 | pr_err("%s", msg); |
5f03cba4 MH |
307 | pr_debug(" Reason: %s (Code: %d)", |
308 | strerror_r(-err, sbuf, sizeof(sbuf)), err); | |
b4bf1130 MH |
309 | pr_err("\n"); |
310 | } | |
311 | ||
e53b00d3 MH |
312 | static int |
313 | __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) | |
11c4e4a3 ACM |
314 | { |
315 | const char * const probe_usage[] = { | |
316 | "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]", | |
317 | "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]", | |
318 | "perf probe [<options>] --del '[GROUP:]EVENT' ...", | |
319 | "perf probe --list", | |
89fe808a | 320 | #ifdef HAVE_DWARF_SUPPORT |
11c4e4a3 ACM |
321 | "perf probe [<options>] --line 'LINEDESC'", |
322 | "perf probe [<options>] --vars 'PROBEPOINT'", | |
f3ab481c | 323 | #endif |
11c4e4a3 | 324 | NULL |
4ea42b18 | 325 | }; |
13dcbbc0 | 326 | struct option options[] = { |
c0555642 | 327 | OPT_INCR('v', "verbose", &verbose, |
89c69c0e | 328 | "be more verbose (show parsed arguments, etc)"), |
5e17b28f MH |
329 | OPT_BOOLEAN('q', "quiet", ¶ms.quiet, |
330 | "be quiet (do not show any mesages)"), | |
12a1fadb | 331 | OPT_BOOLEAN('l', "list", ¶ms.list_events, |
fac13fd5 | 332 | "list up current probe events"), |
fa28244d MH |
333 | OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.", |
334 | opt_del_probe_event), | |
46ab4926 | 335 | OPT_CALLBACK('a', "add", NULL, |
89fe808a | 336 | #ifdef HAVE_DWARF_SUPPORT |
32cb0dd5 | 337 | "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT" |
48481938 | 338 | " [[NAME=]ARG ...]", |
4b4da7f7 | 339 | #else |
48481938 | 340 | "[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]", |
23e8ec0d | 341 | #endif |
4ea42b18 | 342 | "probe point definition, where\n" |
af663d75 MH |
343 | "\t\tGROUP:\tGroup name (optional)\n" |
344 | "\t\tEVENT:\tEvent name\n" | |
4ea42b18 | 345 | "\t\tFUNC:\tFunction name\n" |
2a9c8c36 | 346 | "\t\tOFF:\tOffset from function entry (in byte)\n" |
253977b0 | 347 | "\t\t%return:\tPut the probe at function return\n" |
89fe808a | 348 | #ifdef HAVE_DWARF_SUPPORT |
4ea42b18 | 349 | "\t\tSRC:\tSource code path\n" |
2a9c8c36 MH |
350 | "\t\tRL:\tRelative line number from function entry.\n" |
351 | "\t\tAL:\tAbsolute line number in file.\n" | |
352 | "\t\tPT:\tLazy expression of line code.\n" | |
4ea42b18 | 353 | "\t\tARG:\tProbe argument (local variable name or\n" |
50656eec | 354 | "\t\t\tkprobe-tracer argument format.)\n", |
4b4da7f7 MH |
355 | #else |
356 | "\t\tARG:\tProbe argument (kprobe-tracer argument format.)\n", | |
357 | #endif | |
253977b0 | 358 | opt_add_probe_event), |
12a1fadb | 359 | OPT_BOOLEAN('f', "force", ¶ms.force_add, "forcibly add events" |
d761b08b | 360 | " with existing name"), |
89fe808a | 361 | #ifdef HAVE_DWARF_SUPPORT |
631c9def | 362 | OPT_CALLBACK('L', "line", NULL, |
085ea739 | 363 | "FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]", |
631c9def | 364 | "Show source code lines.", opt_show_lines), |
cf6eb489 MH |
365 | OPT_CALLBACK('V', "vars", NULL, |
366 | "FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT", | |
367 | "Show accessible variables on PROBEDEF", opt_show_vars), | |
fb8c5a56 MH |
368 | OPT_BOOLEAN('\0', "externs", ¶ms.show_ext_vars, |
369 | "Show external variables too (with --vars only)"), | |
4b4da7f7 MH |
370 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, |
371 | "file", "vmlinux pathname"), | |
9ed7e1b8 CD |
372 | OPT_STRING('s', "source", &symbol_conf.source_prefix, |
373 | "directory", "path to kernel source"), | |
225466f1 SD |
374 | OPT_CALLBACK('m', "module", NULL, "modname|path", |
375 | "target module name (for online) or path (for offline)", | |
376 | opt_set_target), | |
631c9def | 377 | #endif |
f4d7da49 | 378 | OPT__DRY_RUN(&probe_event_dry_run), |
ef4a3565 MH |
379 | OPT_INTEGER('\0', "max-probes", ¶ms.max_probe_points, |
380 | "Set how many probe points can be found for a probe."), | |
e80711ca MH |
381 | OPT_BOOLEAN('F', "funcs", ¶ms.show_funcs, |
382 | "Show potential probe-able functions."), | |
3c42258c MH |
383 | OPT_CALLBACK('\0', "filter", NULL, |
384 | "[!]FILTER", "Set a filter (with --vars/funcs only)\n" | |
385 | "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n" | |
386 | "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)", | |
387 | opt_set_filter), | |
225466f1 SD |
388 | OPT_CALLBACK('x', "exec", NULL, "executable|path", |
389 | "target executable name or path", opt_set_target), | |
35e17b24 | 390 | OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, |
4cdcc33d | 391 | "Enable symbol demangling"), |
763122ad AK |
392 | OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel, |
393 | "Enable kernel symbol demangling"), | |
4ea42b18 | 394 | OPT_END() |
11c4e4a3 | 395 | }; |
146a1439 MH |
396 | int ret; |
397 | ||
13dcbbc0 NK |
398 | set_option_flag(options, 'a', "add", PARSE_OPT_EXCLUSIVE); |
399 | set_option_flag(options, 'd', "del", PARSE_OPT_EXCLUSIVE); | |
400 | set_option_flag(options, 'l', "list", PARSE_OPT_EXCLUSIVE); | |
401 | #ifdef HAVE_DWARF_SUPPORT | |
402 | set_option_flag(options, 'L', "line", PARSE_OPT_EXCLUSIVE); | |
403 | set_option_flag(options, 'V', "vars", PARSE_OPT_EXCLUSIVE); | |
404 | #endif | |
405 | ||
4ea42b18 | 406 | argc = parse_options(argc, argv, options, probe_usage, |
46ab4926 | 407 | PARSE_OPT_STOP_AT_NON_OPTION); |
ce11a603 MH |
408 | if (argc > 0) { |
409 | if (strcmp(argv[0], "-") == 0) { | |
410 | pr_warning(" Error: '-' is not supported.\n"); | |
411 | usage_with_options(probe_usage, options); | |
412 | } | |
146a1439 MH |
413 | ret = parse_probe_event_argv(argc, argv); |
414 | if (ret < 0) { | |
b4bf1130 | 415 | pr_err_with_code(" Error: Command Parse Error.", ret); |
146a1439 MH |
416 | return ret; |
417 | } | |
ce11a603 | 418 | } |
46ab4926 | 419 | |
5e17b28f MH |
420 | if (params.quiet) { |
421 | if (verbose != 0) { | |
422 | pr_err(" Error: -v and -q are exclusive.\n"); | |
423 | return -EINVAL; | |
424 | } | |
425 | verbose = -1; | |
426 | } | |
427 | ||
ef4a3565 MH |
428 | if (params.max_probe_points == 0) |
429 | params.max_probe_points = MAX_PROBES; | |
430 | ||
4235b045 | 431 | if ((!params.nevents && !params.dellist && !params.list_events && |
e80711ca | 432 | !params.show_lines && !params.show_funcs)) |
4ea42b18 MH |
433 | usage_with_options(probe_usage, options); |
434 | ||
fd930ff9 FBH |
435 | /* |
436 | * Only consider the user's kernel image path if given. | |
437 | */ | |
438 | symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); | |
439 | ||
12a1fadb | 440 | if (params.list_events) { |
225466f1 SD |
441 | if (params.uprobes) { |
442 | pr_warning(" Error: Don't use --list with --exec.\n"); | |
443 | usage_with_options(probe_usage, options); | |
444 | } | |
146a1439 MH |
445 | ret = show_perf_probe_events(); |
446 | if (ret < 0) | |
b4bf1130 | 447 | pr_err_with_code(" Error: Failed to show event list.", ret); |
146a1439 | 448 | return ret; |
4de189fe | 449 | } |
e80711ca | 450 | if (params.show_funcs) { |
3c42258c MH |
451 | if (!params.filter) |
452 | params.filter = strfilter__new(DEFAULT_FUNC_FILTER, | |
453 | NULL); | |
225466f1 SD |
454 | ret = show_available_funcs(params.target, params.filter, |
455 | params.uprobes); | |
3c42258c | 456 | strfilter__delete(params.filter); |
e53b00d3 | 457 | params.filter = NULL; |
e80711ca | 458 | if (ret < 0) |
b4bf1130 | 459 | pr_err_with_code(" Error: Failed to show functions.", ret); |
e80711ca MH |
460 | return ret; |
461 | } | |
4de189fe | 462 | |
89fe808a | 463 | #ifdef HAVE_DWARF_SUPPORT |
fb7345bb | 464 | if (params.show_lines) { |
2b394bc4 MH |
465 | ret = show_line_range(¶ms.line_range, params.target, |
466 | params.uprobes); | |
146a1439 | 467 | if (ret < 0) |
b4bf1130 | 468 | pr_err_with_code(" Error: Failed to show lines.", ret); |
146a1439 | 469 | return ret; |
631c9def | 470 | } |
cf6eb489 | 471 | if (params.show_vars) { |
bd09d7b5 MH |
472 | if (!params.filter) |
473 | params.filter = strfilter__new(DEFAULT_VAR_FILTER, | |
474 | NULL); | |
475 | ||
cf6eb489 | 476 | ret = show_available_vars(params.events, params.nevents, |
fb8c5a56 | 477 | params.max_probe_points, |
4eced234 | 478 | params.target, |
bd09d7b5 | 479 | params.filter, |
fb8c5a56 | 480 | params.show_ext_vars); |
bd09d7b5 | 481 | strfilter__delete(params.filter); |
e53b00d3 | 482 | params.filter = NULL; |
cf6eb489 | 483 | if (ret < 0) |
b4bf1130 | 484 | pr_err_with_code(" Error: Failed to show vars.", ret); |
cf6eb489 MH |
485 | return ret; |
486 | } | |
631c9def MH |
487 | #endif |
488 | ||
12a1fadb | 489 | if (params.dellist) { |
146a1439 | 490 | ret = del_perf_probe_events(params.dellist); |
146a1439 | 491 | if (ret < 0) { |
b4bf1130 | 492 | pr_err_with_code(" Error: Failed to delete events.", ret); |
146a1439 MH |
493 | return ret; |
494 | } | |
fa28244d MH |
495 | } |
496 | ||
146a1439 | 497 | if (params.nevents) { |
8cb0aa4c MH |
498 | /* Ensure the last given target is used */ |
499 | if (params.target && !params.target_used) { | |
500 | pr_warning(" Error: -x/-m must follow the probe definitions.\n"); | |
501 | usage_with_options(probe_usage, options); | |
502 | } | |
503 | ||
146a1439 | 504 | ret = add_perf_probe_events(params.events, params.nevents, |
c82ec0a2 MH |
505 | params.max_probe_points, |
506 | params.force_add); | |
146a1439 | 507 | if (ret < 0) { |
b4bf1130 | 508 | pr_err_with_code(" Error: Failed to add events.", ret); |
146a1439 MH |
509 | return ret; |
510 | } | |
511 | } | |
4ea42b18 MH |
512 | return 0; |
513 | } | |
e53b00d3 MH |
514 | |
515 | int cmd_probe(int argc, const char **argv, const char *prefix) | |
516 | { | |
517 | int ret; | |
518 | ||
5a62257a MH |
519 | ret = init_params(); |
520 | if (!ret) { | |
521 | ret = __cmd_probe(argc, argv, prefix); | |
522 | cleanup_params(); | |
523 | } | |
e53b00d3 MH |
524 | |
525 | return ret; | |
526 | } |