blob: 04412b4770a2230ec83296cb179eb397ebb42e94 [file] [log] [blame]
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -04001/*
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 */
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040023#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
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040033#include "perf.h"
34#include "builtin.h"
35#include "util/util.h"
Masami Hiramatsufa282442009-12-08 17:03:23 -050036#include "util/strlist.h"
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +090037#include "util/strfilter.h"
Masami Hiramatsue0faa8d2010-03-16 18:05:37 -040038#include "util/symbol.h"
Masami Hiramatsu89c69c02009-10-16 20:08:10 -040039#include "util/debug.h"
Borislav Petkov553873e2013-12-09 17:14:23 +010040#include <api/fs/debugfs.h>
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040041#include "util/parse-options.h"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040042#include "util/probe-finder.h"
Masami Hiramatsu50656ee2009-11-30 19:19:58 -050043#include "util/probe-event.h"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040044
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +090045#define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
Masami Hiramatsu3c422582011-01-20 23:15:45 +090046#define DEFAULT_FUNC_FILTER "!_*"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040047
48/* Session management structure */
49static struct {
Masami Hiramatsufac13fd2009-12-15 10:31:14 -050050 bool list_events;
Masami Hiramatsud761b082009-12-15 10:32:25 -050051 bool force_add;
Masami Hiramatsu631c9de2010-01-06 09:45:34 -050052 bool show_lines;
Masami Hiramatsucf6eb482010-10-21 19:13:23 +090053 bool show_vars;
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +090054 bool show_ext_vars;
Masami Hiramatsue80711c2011-01-13 21:46:11 +090055 bool show_funcs;
Masami Hiramatsucf6eb482010-10-21 19:13:23 +090056 bool mod_events;
Srikar Dronamraju225466f2012-04-16 17:39:09 +053057 bool uprobes;
Masami Hiramatsu4235b042010-03-16 18:06:12 -040058 int nevents;
59 struct perf_probe_event events[MAX_PROBES];
Masami Hiramatsufa282442009-12-08 17:03:23 -050060 struct strlist *dellist;
Masami Hiramatsu631c9de2010-01-06 09:45:34 -050061 struct line_range line_range;
Masami Hiramatsue53b00d2014-01-16 09:39:47 +000062 char *target;
Masami Hiramatsuef4a3562010-04-21 15:56:40 -040063 int max_probe_points;
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +090064 struct strfilter *filter;
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -040065} params;
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040066
Masami Hiramatsu253977b2009-10-27 16:43:10 -040067/* Parse an event definition. Note that any error must die. */
Masami Hiramatsu146a1432010-04-12 13:17:42 -040068static int parse_probe_event(const char *str)
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040069{
Masami Hiramatsu4235b042010-03-16 18:06:12 -040070 struct perf_probe_event *pev = &params.events[params.nevents];
Masami Hiramatsu146a1432010-04-12 13:17:42 -040071 int ret;
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040072
Masami Hiramatsu4235b042010-03-16 18:06:12 -040073 pr_debug("probe-definition(%d): %s\n", params.nevents, str);
Arnaldo Carvalho de Melo8a7ddad2010-05-18 22:57:27 -030074 if (++params.nevents == MAX_PROBES) {
75 pr_err("Too many probes (> %d) were specified.", MAX_PROBES);
76 return -1;
77 }
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -040078
Srikar Dronamraju225466f2012-04-16 17:39:09 +053079 pev->uprobes = params.uprobes;
80
Masami Hiramatsu4235b042010-03-16 18:06:12 -040081 /* Parse a perf-probe command into event */
Masami Hiramatsu146a1432010-04-12 13:17:42 -040082 ret = parse_perf_probe_command(str, pev);
Masami Hiramatsu4235b042010-03-16 18:06:12 -040083 pr_debug("%d arguments\n", pev->nargs);
Masami Hiramatsu146a1432010-04-12 13:17:42 -040084
85 return ret;
Masami Hiramatsu46ab4922009-10-27 16:43:02 -040086}
87
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +053088static int set_target(const char *ptr)
89{
90 int found = 0;
91 const char *buf;
92
93 /*
94 * The first argument after options can be an absolute path
95 * to an executable / library or kernel module.
96 *
97 * TODO: Support relative path, and $PATH, $LD_LIBRARY_PATH,
98 * short module name.
99 */
100 if (!params.target && ptr && *ptr == '/') {
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000101 params.target = strdup(ptr);
102 if (!params.target)
103 return -ENOMEM;
104
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530105 found = 1;
106 buf = ptr + (strlen(ptr) - 3);
107
108 if (strcmp(buf, ".ko"))
109 params.uprobes = true;
110
111 }
112
113 return found;
114}
115
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400116static int parse_probe_event_argv(int argc, const char **argv)
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500117{
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530118 int i, len, ret, found_target;
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500119 char *buf;
120
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530121 found_target = set_target(argv[0]);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000122 if (found_target < 0)
123 return found_target;
124
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530125 if (found_target && argc == 1)
126 return 0;
127
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500128 /* Bind up rest arguments */
129 len = 0;
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530130 for (i = 0; i < argc; i++) {
131 if (i == 0 && found_target)
132 continue;
133
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500134 len += strlen(argv[i]) + 1;
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530135 }
Arnaldo Carvalho de Melo8a7ddad2010-05-18 22:57:27 -0300136 buf = zalloc(len + 1);
137 if (buf == NULL)
138 return -ENOMEM;
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500139 len = 0;
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530140 for (i = 0; i < argc; i++) {
141 if (i == 0 && found_target)
142 continue;
143
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500144 len += sprintf(&buf[len], "%s ", argv[i]);
Srikar Dronamraju73eff9f2012-04-16 17:39:25 +0530145 }
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900146 params.mod_events = true;
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400147 ret = parse_probe_event(buf);
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500148 free(buf);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400149 return ret;
Masami Hiramatsud1bde3f2009-12-08 17:02:54 -0500150}
151
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300152static int opt_add_probe_event(const struct option *opt __maybe_unused,
153 const char *str, int unset __maybe_unused)
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400154{
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900155 if (str) {
156 params.mod_events = true;
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400157 return parse_probe_event(str);
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900158 } else
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400159 return 0;
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400160}
161
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300162static int opt_del_probe_event(const struct option *opt __maybe_unused,
163 const char *str, int unset __maybe_unused)
Masami Hiramatsufa282442009-12-08 17:03:23 -0500164{
165 if (str) {
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900166 params.mod_events = true;
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400167 if (!params.dellist)
168 params.dellist = strlist__new(true, NULL);
169 strlist__add(params.dellist, str);
Masami Hiramatsufa282442009-12-08 17:03:23 -0500170 }
171 return 0;
172}
173
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530174static int opt_set_target(const struct option *opt, const char *str,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300175 int unset __maybe_unused)
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530176{
177 int ret = -ENOENT;
Masami Hiramatsu8a613d42013-12-26 05:41:50 +0000178 char *tmp;
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530179
180 if (str && !params.target) {
181 if (!strcmp(opt->long_name, "exec"))
182 params.uprobes = true;
Ingo Molnar89fe8082013-09-30 12:07:11 +0200183#ifdef HAVE_DWARF_SUPPORT
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530184 else if (!strcmp(opt->long_name, "module"))
185 params.uprobes = false;
186#endif
187 else
188 return ret;
189
Masami Hiramatsu8a613d42013-12-26 05:41:50 +0000190 /* 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 }
202 params.target = tmp;
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530203 ret = 0;
204 }
205
206 return ret;
207}
208
Ingo Molnar89fe8082013-09-30 12:07:11 +0200209#ifdef HAVE_DWARF_SUPPORT
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300210static int opt_show_lines(const struct option *opt __maybe_unused,
211 const char *str, int unset __maybe_unused)
Hitoshi Mitake0eda7382010-01-16 21:31:16 +0900212{
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400213 int ret = 0;
214
Masami Hiramatsu13e27d72011-08-11 20:02:53 +0900215 if (!str)
216 return 0;
217
218 if (params.show_lines) {
219 pr_warning("Warning: more than one --line options are"
220 " detected. Only the first one is valid.\n");
221 return 0;
222 }
223
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400224 params.show_lines = true;
Masami Hiramatsu13e27d72011-08-11 20:02:53 +0900225 ret = parse_line_range_desc(str, &params.line_range);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400226
227 return ret;
Hitoshi Mitake0eda7382010-01-16 21:31:16 +0900228}
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900229
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300230static int opt_show_vars(const struct option *opt __maybe_unused,
231 const char *str, int unset __maybe_unused)
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900232{
233 struct perf_probe_event *pev = &params.events[params.nevents];
234 int ret;
235
236 if (!str)
237 return 0;
238
239 ret = parse_probe_event(str);
240 if (!ret && pev->nargs != 0) {
241 pr_err(" Error: '--vars' doesn't accept arguments.\n");
242 return -EINVAL;
243 }
244 params.show_vars = true;
245
246 return ret;
247}
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900248#endif
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900249
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300250static int opt_set_filter(const struct option *opt __maybe_unused,
251 const char *str, int unset __maybe_unused)
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900252{
253 const char *err;
254
255 if (str) {
256 pr_debug2("Set filter: %s\n", str);
257 if (params.filter)
258 strfilter__delete(params.filter);
259 params.filter = strfilter__new(str, &err);
260 if (!params.filter) {
Arnaldo Carvalho de Melo823c7162011-01-31 19:45:38 -0200261 pr_err("Filter parse error at %td.\n", err - str + 1);
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900262 pr_err("Source: \"%s\"\n", str);
263 pr_err(" %*c\n", (int)(err - str + 1), '^');
264 return -EINVAL;
265 }
266 }
267
268 return 0;
269}
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400270
Masami Hiramatsu5a622572014-02-06 05:32:09 +0000271static int init_params(void)
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000272{
Masami Hiramatsu5a622572014-02-06 05:32:09 +0000273 return line_range__init(&params.line_range);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000274}
275
276static void cleanup_params(void)
277{
278 int i;
279
280 for (i = 0; i < params.nevents; i++)
281 clear_perf_probe_event(params.events + i);
282 if (params.dellist)
283 strlist__delete(params.dellist);
284 line_range__clear(&params.line_range);
285 free(params.target);
286 if (params.filter)
287 strfilter__delete(params.filter);
288 memset(&params, 0, sizeof(params));
289}
290
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000291static void pr_err_with_code(const char *msg, int err)
292{
Masami Hiramatsu5f03cba2014-08-14 02:22:34 +0000293 char sbuf[STRERR_BUFSIZE];
294
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000295 pr_err("%s", msg);
Masami Hiramatsu5f03cba2014-08-14 02:22:34 +0000296 pr_debug(" Reason: %s (Code: %d)",
297 strerror_r(-err, sbuf, sizeof(sbuf)), err);
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000298 pr_err("\n");
299}
300
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000301static int
302__cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300303{
304 const char * const probe_usage[] = {
305 "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]",
306 "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]",
307 "perf probe [<options>] --del '[GROUP:]EVENT' ...",
308 "perf probe --list",
Ingo Molnar89fe8082013-09-30 12:07:11 +0200309#ifdef HAVE_DWARF_SUPPORT
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300310 "perf probe [<options>] --line 'LINEDESC'",
311 "perf probe [<options>] --vars 'PROBEPOINT'",
Masami Hiramatsuf3ab4812010-02-25 08:35:12 -0500312#endif
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300313 NULL
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400314};
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300315 const struct option options[] = {
Ian Munsiec0555642010-04-13 18:37:33 +1000316 OPT_INCR('v', "verbose", &verbose,
Masami Hiramatsu89c69c02009-10-16 20:08:10 -0400317 "be more verbose (show parsed arguments, etc)"),
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400318 OPT_BOOLEAN('l', "list", &params.list_events,
Masami Hiramatsufac13fd2009-12-15 10:31:14 -0500319 "list up current probe events"),
Masami Hiramatsufa282442009-12-08 17:03:23 -0500320 OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
321 opt_del_probe_event),
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400322 OPT_CALLBACK('a', "add", NULL,
Ingo Molnar89fe8082013-09-30 12:07:11 +0200323#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu32cb0dd2010-03-03 22:38:43 -0500324 "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT"
Masami Hiramatsu48481932010-04-12 13:16:53 -0400325 " [[NAME=]ARG ...]",
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300326#else
Masami Hiramatsu48481932010-04-12 13:16:53 -0400327 "[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]",
Masami Hiramatsu23e8ec02009-10-07 18:28:30 -0400328#endif
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400329 "probe point definition, where\n"
Masami Hiramatsuaf663d72009-12-15 10:32:18 -0500330 "\t\tGROUP:\tGroup name (optional)\n"
331 "\t\tEVENT:\tEvent name\n"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400332 "\t\tFUNC:\tFunction name\n"
Masami Hiramatsu2a9c8c32010-02-25 08:36:12 -0500333 "\t\tOFF:\tOffset from function entry (in byte)\n"
Masami Hiramatsu253977b2009-10-27 16:43:10 -0400334 "\t\t%return:\tPut the probe at function return\n"
Ingo Molnar89fe8082013-09-30 12:07:11 +0200335#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400336 "\t\tSRC:\tSource code path\n"
Masami Hiramatsu2a9c8c32010-02-25 08:36:12 -0500337 "\t\tRL:\tRelative line number from function entry.\n"
338 "\t\tAL:\tAbsolute line number in file.\n"
339 "\t\tPT:\tLazy expression of line code.\n"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400340 "\t\tARG:\tProbe argument (local variable name or\n"
Masami Hiramatsu50656ee2009-11-30 19:19:58 -0500341 "\t\t\tkprobe-tracer argument format.)\n",
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300342#else
343 "\t\tARG:\tProbe argument (kprobe-tracer argument format.)\n",
344#endif
Masami Hiramatsu253977b2009-10-27 16:43:10 -0400345 opt_add_probe_event),
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400346 OPT_BOOLEAN('f', "force", &params.force_add, "forcibly add events"
Masami Hiramatsud761b082009-12-15 10:32:25 -0500347 " with existing name"),
Ingo Molnar89fe8082013-09-30 12:07:11 +0200348#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500349 OPT_CALLBACK('L', "line", NULL,
Masami Hiramatsu085ea732010-04-02 12:50:39 -0400350 "FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]",
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500351 "Show source code lines.", opt_show_lines),
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900352 OPT_CALLBACK('V', "vars", NULL,
353 "FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT",
354 "Show accessible variables on PROBEDEF", opt_show_vars),
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900355 OPT_BOOLEAN('\0', "externs", &params.show_ext_vars,
356 "Show external variables too (with --vars only)"),
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300357 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
358 "file", "vmlinux pathname"),
Chase Douglas9ed7e1b2010-06-14 15:26:30 -0400359 OPT_STRING('s', "source", &symbol_conf.source_prefix,
360 "directory", "path to kernel source"),
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530361 OPT_CALLBACK('m', "module", NULL, "modname|path",
362 "target module name (for online) or path (for offline)",
363 opt_set_target),
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500364#endif
Masami Hiramatsuf4d7da42010-03-16 18:06:05 -0400365 OPT__DRY_RUN(&probe_event_dry_run),
Masami Hiramatsuef4a3562010-04-21 15:56:40 -0400366 OPT_INTEGER('\0', "max-probes", &params.max_probe_points,
367 "Set how many probe points can be found for a probe."),
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900368 OPT_BOOLEAN('F', "funcs", &params.show_funcs,
369 "Show potential probe-able functions."),
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900370 OPT_CALLBACK('\0', "filter", NULL,
371 "[!]FILTER", "Set a filter (with --vars/funcs only)\n"
372 "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n"
373 "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)",
374 opt_set_filter),
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530375 OPT_CALLBACK('x', "exec", NULL, "executable|path",
376 "target executable name or path", opt_set_target),
Azat Khuzhin35e17b22013-10-28 12:04:24 +0400377 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
378 "Disable symbol demangling"),
Avi Kivity763122a2014-09-13 07:15:05 +0300379 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
380 "Enable kernel symbol demangling"),
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400381 OPT_END()
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300382 };
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400383 int ret;
384
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400385 argc = parse_options(argc, argv, options, probe_usage,
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400386 PARSE_OPT_STOP_AT_NON_OPTION);
Masami Hiramatsuce11a602009-12-15 10:31:28 -0500387 if (argc > 0) {
388 if (strcmp(argv[0], "-") == 0) {
389 pr_warning(" Error: '-' is not supported.\n");
390 usage_with_options(probe_usage, options);
391 }
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400392 ret = parse_probe_event_argv(argc, argv);
393 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000394 pr_err_with_code(" Error: Command Parse Error.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400395 return ret;
396 }
Masami Hiramatsuce11a602009-12-15 10:31:28 -0500397 }
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400398
Masami Hiramatsuef4a3562010-04-21 15:56:40 -0400399 if (params.max_probe_points == 0)
400 params.max_probe_points = MAX_PROBES;
401
Masami Hiramatsu4235b042010-03-16 18:06:12 -0400402 if ((!params.nevents && !params.dellist && !params.list_events &&
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900403 !params.show_lines && !params.show_funcs))
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400404 usage_with_options(probe_usage, options);
405
Franck Bui-Huufd930ff2010-12-10 14:06:03 +0100406 /*
407 * Only consider the user's kernel image path if given.
408 */
409 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
410
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400411 if (params.list_events) {
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900412 if (params.mod_events) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400413 pr_err(" Error: Don't use --list with --add/--del.\n");
Masami Hiramatsufa282442009-12-08 17:03:23 -0500414 usage_with_options(probe_usage, options);
415 }
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400416 if (params.show_lines) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400417 pr_err(" Error: Don't use --list with --line.\n");
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500418 usage_with_options(probe_usage, options);
419 }
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900420 if (params.show_vars) {
421 pr_err(" Error: Don't use --list with --vars.\n");
422 usage_with_options(probe_usage, options);
423 }
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900424 if (params.show_funcs) {
425 pr_err(" Error: Don't use --list with --funcs.\n");
426 usage_with_options(probe_usage, options);
427 }
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530428 if (params.uprobes) {
429 pr_warning(" Error: Don't use --list with --exec.\n");
430 usage_with_options(probe_usage, options);
431 }
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400432 ret = show_perf_probe_events();
433 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000434 pr_err_with_code(" Error: Failed to show event list.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400435 return ret;
Masami Hiramatsu4de189f2009-11-30 19:20:17 -0500436 }
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900437 if (params.show_funcs) {
438 if (params.nevents != 0 || params.dellist) {
439 pr_err(" Error: Don't use --funcs with"
440 " --add/--del.\n");
441 usage_with_options(probe_usage, options);
442 }
443 if (params.show_lines) {
444 pr_err(" Error: Don't use --funcs with --line.\n");
445 usage_with_options(probe_usage, options);
446 }
447 if (params.show_vars) {
448 pr_err(" Error: Don't use --funcs with --vars.\n");
449 usage_with_options(probe_usage, options);
450 }
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900451 if (!params.filter)
452 params.filter = strfilter__new(DEFAULT_FUNC_FILTER,
453 NULL);
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530454 ret = show_available_funcs(params.target, params.filter,
455 params.uprobes);
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900456 strfilter__delete(params.filter);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000457 params.filter = NULL;
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900458 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000459 pr_err_with_code(" Error: Failed to show functions.", ret);
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900460 return ret;
461 }
Masami Hiramatsu4de189f2009-11-30 19:20:17 -0500462
Ingo Molnar89fe8082013-09-30 12:07:11 +0200463#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsufb7345b2013-12-26 05:41:53 +0000464 if (params.show_lines) {
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900465 if (params.mod_events) {
466 pr_err(" Error: Don't use --line with"
467 " --add/--del.\n");
468 usage_with_options(probe_usage, options);
469 }
470 if (params.show_vars) {
471 pr_err(" Error: Don't use --line with --vars.\n");
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500472 usage_with_options(probe_usage, options);
473 }
Masami Hiramatsue0faa8d2010-03-16 18:05:37 -0400474
Masami Hiramatsu2b394bc2014-09-17 08:40:54 +0000475 ret = show_line_range(&params.line_range, params.target,
476 params.uprobes);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400477 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000478 pr_err_with_code(" Error: Failed to show lines.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400479 return ret;
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500480 }
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900481 if (params.show_vars) {
482 if (params.mod_events) {
483 pr_err(" Error: Don't use --vars with"
484 " --add/--del.\n");
485 usage_with_options(probe_usage, options);
486 }
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900487 if (!params.filter)
488 params.filter = strfilter__new(DEFAULT_VAR_FILTER,
489 NULL);
490
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900491 ret = show_available_vars(params.events, params.nevents,
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900492 params.max_probe_points,
Srikar Dronamraju4eced232012-02-02 19:50:40 +0530493 params.target,
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900494 params.filter,
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900495 params.show_ext_vars);
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900496 strfilter__delete(params.filter);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000497 params.filter = NULL;
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900498 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000499 pr_err_with_code(" Error: Failed to show vars.", ret);
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900500 return ret;
501 }
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500502#endif
503
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400504 if (params.dellist) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400505 ret = del_perf_probe_events(params.dellist);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400506 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000507 pr_err_with_code(" Error: Failed to delete events.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400508 return ret;
509 }
Masami Hiramatsufa282442009-12-08 17:03:23 -0500510 }
511
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400512 if (params.nevents) {
513 ret = add_perf_probe_events(params.events, params.nevents,
Masami Hiramatsuc82ec0a2010-10-21 19:13:29 +0900514 params.max_probe_points,
Srikar Dronamraju4eced232012-02-02 19:50:40 +0530515 params.target,
Masami Hiramatsuc82ec0a2010-10-21 19:13:29 +0900516 params.force_add);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400517 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000518 pr_err_with_code(" Error: Failed to add events.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400519 return ret;
520 }
521 }
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400522 return 0;
523}
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000524
525int cmd_probe(int argc, const char **argv, const char *prefix)
526{
527 int ret;
528
Masami Hiramatsu5a622572014-02-06 05:32:09 +0000529 ret = init_params();
530 if (!ret) {
531 ret = __cmd_probe(argc, argv, prefix);
532 cleanup_params();
533 }
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000534
535 return ret;
536}