blob: c63fa29250753b09d7468a1f5142a3f540e48249 [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{
293 pr_err("%s", msg);
294 pr_debug(" Reason: %s (Code: %d)", strerror(-err), err);
295 pr_err("\n");
296}
297
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000298static int
299__cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300300{
301 const char * const probe_usage[] = {
302 "perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]",
303 "perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]",
304 "perf probe [<options>] --del '[GROUP:]EVENT' ...",
305 "perf probe --list",
Ingo Molnar89fe8082013-09-30 12:07:11 +0200306#ifdef HAVE_DWARF_SUPPORT
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300307 "perf probe [<options>] --line 'LINEDESC'",
308 "perf probe [<options>] --vars 'PROBEPOINT'",
Masami Hiramatsuf3ab4812010-02-25 08:35:12 -0500309#endif
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300310 NULL
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400311};
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300312 const struct option options[] = {
Ian Munsiec0555642010-04-13 18:37:33 +1000313 OPT_INCR('v', "verbose", &verbose,
Masami Hiramatsu89c69c02009-10-16 20:08:10 -0400314 "be more verbose (show parsed arguments, etc)"),
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400315 OPT_BOOLEAN('l', "list", &params.list_events,
Masami Hiramatsufac13fd2009-12-15 10:31:14 -0500316 "list up current probe events"),
Masami Hiramatsufa282442009-12-08 17:03:23 -0500317 OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
318 opt_del_probe_event),
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400319 OPT_CALLBACK('a', "add", NULL,
Ingo Molnar89fe8082013-09-30 12:07:11 +0200320#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu32cb0dd2010-03-03 22:38:43 -0500321 "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT"
Masami Hiramatsu48481932010-04-12 13:16:53 -0400322 " [[NAME=]ARG ...]",
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300323#else
Masami Hiramatsu48481932010-04-12 13:16:53 -0400324 "[EVENT=]FUNC[+OFF|%return] [[NAME=]ARG ...]",
Masami Hiramatsu23e8ec02009-10-07 18:28:30 -0400325#endif
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400326 "probe point definition, where\n"
Masami Hiramatsuaf663d72009-12-15 10:32:18 -0500327 "\t\tGROUP:\tGroup name (optional)\n"
328 "\t\tEVENT:\tEvent name\n"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400329 "\t\tFUNC:\tFunction name\n"
Masami Hiramatsu2a9c8c32010-02-25 08:36:12 -0500330 "\t\tOFF:\tOffset from function entry (in byte)\n"
Masami Hiramatsu253977b2009-10-27 16:43:10 -0400331 "\t\t%return:\tPut the probe at function return\n"
Ingo Molnar89fe8082013-09-30 12:07:11 +0200332#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400333 "\t\tSRC:\tSource code path\n"
Masami Hiramatsu2a9c8c32010-02-25 08:36:12 -0500334 "\t\tRL:\tRelative line number from function entry.\n"
335 "\t\tAL:\tAbsolute line number in file.\n"
336 "\t\tPT:\tLazy expression of line code.\n"
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400337 "\t\tARG:\tProbe argument (local variable name or\n"
Masami Hiramatsu50656ee2009-11-30 19:19:58 -0500338 "\t\t\tkprobe-tracer argument format.)\n",
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300339#else
340 "\t\tARG:\tProbe argument (kprobe-tracer argument format.)\n",
341#endif
Masami Hiramatsu253977b2009-10-27 16:43:10 -0400342 opt_add_probe_event),
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400343 OPT_BOOLEAN('f', "force", &params.force_add, "forcibly add events"
Masami Hiramatsud761b082009-12-15 10:32:25 -0500344 " with existing name"),
Ingo Molnar89fe8082013-09-30 12:07:11 +0200345#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500346 OPT_CALLBACK('L', "line", NULL,
Masami Hiramatsu085ea732010-04-02 12:50:39 -0400347 "FUNC[:RLN[+NUM|-RLN2]]|SRC:ALN[+NUM|-ALN2]",
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500348 "Show source code lines.", opt_show_lines),
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900349 OPT_CALLBACK('V', "vars", NULL,
350 "FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT",
351 "Show accessible variables on PROBEDEF", opt_show_vars),
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900352 OPT_BOOLEAN('\0', "externs", &params.show_ext_vars,
353 "Show external variables too (with --vars only)"),
Masami Hiramatsu4b4da7f2010-03-22 13:10:26 -0300354 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
355 "file", "vmlinux pathname"),
Chase Douglas9ed7e1b2010-06-14 15:26:30 -0400356 OPT_STRING('s', "source", &symbol_conf.source_prefix,
357 "directory", "path to kernel source"),
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530358 OPT_CALLBACK('m', "module", NULL, "modname|path",
359 "target module name (for online) or path (for offline)",
360 opt_set_target),
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500361#endif
Masami Hiramatsuf4d7da42010-03-16 18:06:05 -0400362 OPT__DRY_RUN(&probe_event_dry_run),
Masami Hiramatsuef4a3562010-04-21 15:56:40 -0400363 OPT_INTEGER('\0', "max-probes", &params.max_probe_points,
364 "Set how many probe points can be found for a probe."),
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900365 OPT_BOOLEAN('F', "funcs", &params.show_funcs,
366 "Show potential probe-able functions."),
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900367 OPT_CALLBACK('\0', "filter", NULL,
368 "[!]FILTER", "Set a filter (with --vars/funcs only)\n"
369 "\t\t\t(default: \"" DEFAULT_VAR_FILTER "\" for --vars,\n"
370 "\t\t\t \"" DEFAULT_FUNC_FILTER "\" for --funcs)",
371 opt_set_filter),
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530372 OPT_CALLBACK('x', "exec", NULL, "executable|path",
373 "target executable name or path", opt_set_target),
Azat Khuzhin35e17b22013-10-28 12:04:24 +0400374 OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
375 "Disable symbol demangling"),
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400376 OPT_END()
Arnaldo Carvalho de Melo11c4e4a2012-10-01 15:20:58 -0300377 };
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400378 int ret;
379
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400380 argc = parse_options(argc, argv, options, probe_usage,
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400381 PARSE_OPT_STOP_AT_NON_OPTION);
Masami Hiramatsuce11a602009-12-15 10:31:28 -0500382 if (argc > 0) {
383 if (strcmp(argv[0], "-") == 0) {
384 pr_warning(" Error: '-' is not supported.\n");
385 usage_with_options(probe_usage, options);
386 }
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400387 ret = parse_probe_event_argv(argc, argv);
388 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000389 pr_err_with_code(" Error: Command Parse Error.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400390 return ret;
391 }
Masami Hiramatsuce11a602009-12-15 10:31:28 -0500392 }
Masami Hiramatsu46ab4922009-10-27 16:43:02 -0400393
Masami Hiramatsuef4a3562010-04-21 15:56:40 -0400394 if (params.max_probe_points == 0)
395 params.max_probe_points = MAX_PROBES;
396
Masami Hiramatsu4235b042010-03-16 18:06:12 -0400397 if ((!params.nevents && !params.dellist && !params.list_events &&
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900398 !params.show_lines && !params.show_funcs))
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400399 usage_with_options(probe_usage, options);
400
Franck Bui-Huufd930ff2010-12-10 14:06:03 +0100401 /*
402 * Only consider the user's kernel image path if given.
403 */
404 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
405
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400406 if (params.list_events) {
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900407 if (params.mod_events) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400408 pr_err(" Error: Don't use --list with --add/--del.\n");
Masami Hiramatsufa282442009-12-08 17:03:23 -0500409 usage_with_options(probe_usage, options);
410 }
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400411 if (params.show_lines) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400412 pr_err(" Error: Don't use --list with --line.\n");
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500413 usage_with_options(probe_usage, options);
414 }
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900415 if (params.show_vars) {
416 pr_err(" Error: Don't use --list with --vars.\n");
417 usage_with_options(probe_usage, options);
418 }
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900419 if (params.show_funcs) {
420 pr_err(" Error: Don't use --list with --funcs.\n");
421 usage_with_options(probe_usage, options);
422 }
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530423 if (params.uprobes) {
424 pr_warning(" Error: Don't use --list with --exec.\n");
425 usage_with_options(probe_usage, options);
426 }
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400427 ret = show_perf_probe_events();
428 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000429 pr_err_with_code(" Error: Failed to show event list.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400430 return ret;
Masami Hiramatsu4de189f2009-11-30 19:20:17 -0500431 }
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900432 if (params.show_funcs) {
433 if (params.nevents != 0 || params.dellist) {
434 pr_err(" Error: Don't use --funcs with"
435 " --add/--del.\n");
436 usage_with_options(probe_usage, options);
437 }
438 if (params.show_lines) {
439 pr_err(" Error: Don't use --funcs with --line.\n");
440 usage_with_options(probe_usage, options);
441 }
442 if (params.show_vars) {
443 pr_err(" Error: Don't use --funcs with --vars.\n");
444 usage_with_options(probe_usage, options);
445 }
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900446 if (!params.filter)
447 params.filter = strfilter__new(DEFAULT_FUNC_FILTER,
448 NULL);
Srikar Dronamraju225466f2012-04-16 17:39:09 +0530449 ret = show_available_funcs(params.target, params.filter,
450 params.uprobes);
Masami Hiramatsu3c422582011-01-20 23:15:45 +0900451 strfilter__delete(params.filter);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000452 params.filter = NULL;
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900453 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000454 pr_err_with_code(" Error: Failed to show functions.", ret);
Masami Hiramatsue80711c2011-01-13 21:46:11 +0900455 return ret;
456 }
Masami Hiramatsu4de189f2009-11-30 19:20:17 -0500457
Ingo Molnar89fe8082013-09-30 12:07:11 +0200458#ifdef HAVE_DWARF_SUPPORT
Masami Hiramatsufb7345b2013-12-26 05:41:53 +0000459 if (params.show_lines) {
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900460 if (params.mod_events) {
461 pr_err(" Error: Don't use --line with"
462 " --add/--del.\n");
463 usage_with_options(probe_usage, options);
464 }
465 if (params.show_vars) {
466 pr_err(" Error: Don't use --line with --vars.\n");
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500467 usage_with_options(probe_usage, options);
468 }
Masami Hiramatsue0faa8d2010-03-16 18:05:37 -0400469
Srikar Dronamraju4eced232012-02-02 19:50:40 +0530470 ret = show_line_range(&params.line_range, params.target);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400471 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000472 pr_err_with_code(" Error: Failed to show lines.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400473 return ret;
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500474 }
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900475 if (params.show_vars) {
476 if (params.mod_events) {
477 pr_err(" Error: Don't use --vars with"
478 " --add/--del.\n");
479 usage_with_options(probe_usage, options);
480 }
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900481 if (!params.filter)
482 params.filter = strfilter__new(DEFAULT_VAR_FILTER,
483 NULL);
484
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900485 ret = show_available_vars(params.events, params.nevents,
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900486 params.max_probe_points,
Srikar Dronamraju4eced232012-02-02 19:50:40 +0530487 params.target,
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900488 params.filter,
Masami Hiramatsufb8c5a52010-10-21 19:13:35 +0900489 params.show_ext_vars);
Masami Hiramatsubd09d7b2011-01-20 23:15:39 +0900490 strfilter__delete(params.filter);
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000491 params.filter = NULL;
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900492 if (ret < 0)
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000493 pr_err_with_code(" Error: Failed to show vars.", ret);
Masami Hiramatsucf6eb482010-10-21 19:13:23 +0900494 return ret;
495 }
Masami Hiramatsu631c9de2010-01-06 09:45:34 -0500496#endif
497
Masami Hiramatsu12a1fad2010-03-16 18:05:44 -0400498 if (params.dellist) {
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400499 ret = del_perf_probe_events(params.dellist);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400500 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000501 pr_err_with_code(" Error: Failed to delete events.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400502 return ret;
503 }
Masami Hiramatsufa282442009-12-08 17:03:23 -0500504 }
505
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400506 if (params.nevents) {
507 ret = add_perf_probe_events(params.events, params.nevents,
Masami Hiramatsuc82ec0a2010-10-21 19:13:29 +0900508 params.max_probe_points,
Srikar Dronamraju4eced232012-02-02 19:50:40 +0530509 params.target,
Masami Hiramatsuc82ec0a2010-10-21 19:13:29 +0900510 params.force_add);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400511 if (ret < 0) {
Masami Hiramatsub4bf1132014-06-06 07:13:52 +0000512 pr_err_with_code(" Error: Failed to add events.", ret);
Masami Hiramatsu146a1432010-04-12 13:17:42 -0400513 return ret;
514 }
515 }
Masami Hiramatsu4ea42b12009-10-08 17:17:38 -0400516 return 0;
517}
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000518
519int cmd_probe(int argc, const char **argv, const char *prefix)
520{
521 int ret;
522
Masami Hiramatsu5a622572014-02-06 05:32:09 +0000523 ret = init_params();
524 if (!ret) {
525 ret = __cmd_probe(argc, argv, prefix);
526 cleanup_params();
527 }
Masami Hiramatsue53b00d2014-01-16 09:39:47 +0000528
529 return ret;
530}