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