blob: 85e1aed95204c21de59b2b80721735670839b814 [file] [log] [blame]
Ingo Molnarbf9e1872009-06-02 23:37:05 +02001/*
2 * perf.c
3 *
4 * Performance analysis utility.
5 *
6 * This is the main hub from which the sub-commands (perf stat,
7 * perf top, perf record, perf report, etc.) are started.
8 */
Ingo Molnar07800602009-04-20 15:00:56 +02009#include "builtin.h"
Ingo Molnarbf9e1872009-06-02 23:37:05 +020010
Ingo Molnar148be2c2009-04-27 08:02:14 +020011#include "util/exec_cmd.h"
12#include "util/cache.h"
13#include "util/quote.h"
14#include "util/run-command.h"
Jason Baron5beeded2009-07-21 14:16:29 -040015#include "util/parse-events.h"
Borislav Petkov85c66be2013-02-20 16:32:30 +010016#include <lk/debugfs.h>
Irina Tirdea27683dc2012-09-08 03:43:19 +030017#include <pthread.h>
Ingo Molnar07800602009-04-20 15:00:56 +020018
19const char perf_usage_string[] =
Ingo Molnarcc13a592009-04-20 16:01:30 +020020 "perf [--version] [--help] COMMAND [ARGS]";
Ingo Molnar07800602009-04-20 15:00:56 +020021
22const char perf_more_info_string[] =
23 "See 'perf help COMMAND' for more information on a specific command.";
24
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -030025int use_browser = -1;
Ingo Molnar07800602009-04-20 15:00:56 +020026static int use_pager = -1;
Feng Tang70cb4e92012-10-30 11:56:02 +080027const char *input_name;
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -030028
Frederic Weisbecker98a41792012-08-09 16:31:51 +020029struct cmd_struct {
30 const char *cmd;
31 int (*fn)(int, const char **, const char *);
32 int option;
33};
34
35static struct cmd_struct commands[] = {
36 { "buildid-cache", cmd_buildid_cache, 0 },
37 { "buildid-list", cmd_buildid_list, 0 },
38 { "diff", cmd_diff, 0 },
39 { "evlist", cmd_evlist, 0 },
40 { "help", cmd_help, 0 },
41 { "list", cmd_list, 0 },
42 { "record", cmd_record, 0 },
43 { "report", cmd_report, 0 },
44 { "bench", cmd_bench, 0 },
45 { "stat", cmd_stat, 0 },
46 { "timechart", cmd_timechart, 0 },
47 { "top", cmd_top, 0 },
48 { "annotate", cmd_annotate, 0 },
49 { "version", cmd_version, 0 },
50 { "script", cmd_script, 0 },
51 { "sched", cmd_sched, 0 },
Namhyung Kim29a0fc92012-09-28 18:31:59 +090052#ifdef LIBELF_SUPPORT
Frederic Weisbecker98a41792012-08-09 16:31:51 +020053 { "probe", cmd_probe, 0 },
Namhyung Kim393be2e2012-08-06 13:41:21 +090054#endif
Frederic Weisbecker98a41792012-08-09 16:31:51 +020055 { "kmem", cmd_kmem, 0 },
56 { "lock", cmd_lock, 0 },
57 { "kvm", cmd_kvm, 0 },
58 { "test", cmd_test, 0 },
Namhyung Kimf315e162012-09-28 18:32:01 +090059#ifdef LIBAUDIT_SUPPORT
Arnaldo Carvalho de Melo514f1c62012-09-26 20:05:56 -030060 { "trace", cmd_trace, 0 },
Namhyung Kim4d290892012-09-27 20:23:38 +090061#endif
Frederic Weisbecker98a41792012-08-09 16:31:51 +020062 { "inject", cmd_inject, 0 },
Stephane Eranian028f12e2013-01-24 16:10:38 +010063 { "mem", cmd_mem, 0 },
Frederic Weisbecker98a41792012-08-09 16:31:51 +020064};
65
Ingo Molnar07800602009-04-20 15:00:56 +020066struct pager_config {
67 const char *cmd;
68 int val;
69};
70
71static int pager_command_config(const char *var, const char *value, void *data)
72{
73 struct pager_config *c = data;
74 if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd))
75 c->val = perf_config_bool(var, value);
76 return 0;
77}
78
79/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
80int check_pager_config(const char *cmd)
81{
82 struct pager_config c;
83 c.cmd = cmd;
84 c.val = -1;
85 perf_config(pager_command_config, &c);
86 return c.val;
87}
88
Namhyung Kim0020ce22012-11-12 11:50:17 +090089static int browser_command_config(const char *var, const char *value, void *data)
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -030090{
91 struct pager_config *c = data;
92 if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd))
93 c->val = perf_config_bool(var, value);
Namhyung Kim0020ce22012-11-12 11:50:17 +090094 if (!prefixcmp(var, "gtk.") && !strcmp(var + 4, c->cmd))
95 c->val = perf_config_bool(var, value) ? 2 : 0;
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -030096 return 0;
97}
98
Namhyung Kim0020ce22012-11-12 11:50:17 +090099/*
100 * returns 0 for "no tui", 1 for "use tui", 2 for "use gtk",
101 * and -1 for "not specified"
102 */
103static int check_browser_config(const char *cmd)
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -0300104{
105 struct pager_config c;
106 c.cmd = cmd;
107 c.val = -1;
Namhyung Kim0020ce22012-11-12 11:50:17 +0900108 perf_config(browser_command_config, &c);
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -0300109 return c.val;
110}
111
Thiago Farina4c574152010-01-27 21:05:55 -0200112static void commit_pager_choice(void)
113{
Ingo Molnar07800602009-04-20 15:00:56 +0200114 switch (use_pager) {
115 case 0:
116 setenv("PERF_PAGER", "cat", 1);
117 break;
118 case 1:
119 /* setup_pager(); */
120 break;
121 default:
122 break;
123 }
124}
125
Thiago Farina4c574152010-01-27 21:05:55 -0200126static int handle_options(const char ***argv, int *argc, int *envchanged)
Ingo Molnar07800602009-04-20 15:00:56 +0200127{
128 int handled = 0;
129
130 while (*argc > 0) {
131 const char *cmd = (*argv)[0];
132 if (cmd[0] != '-')
133 break;
134
135 /*
136 * For legacy reasons, the "version" and "help"
137 * commands can be written with "--" prepended
138 * to make them look like flags.
139 */
140 if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
141 break;
142
143 /*
144 * Check remaining flags.
145 */
Vincent Legollcfed95a2009-10-13 10:18:16 +0200146 if (!prefixcmp(cmd, CMD_EXEC_PATH)) {
147 cmd += strlen(CMD_EXEC_PATH);
Ingo Molnar07800602009-04-20 15:00:56 +0200148 if (*cmd == '=')
149 perf_set_argv_exec_path(cmd + 1);
150 else {
151 puts(perf_exec_path());
152 exit(0);
153 }
154 } else if (!strcmp(cmd, "--html-path")) {
155 puts(system_path(PERF_HTML_PATH));
156 exit(0);
157 } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
158 use_pager = 1;
159 } else if (!strcmp(cmd, "--no-pager")) {
160 use_pager = 0;
161 if (envchanged)
162 *envchanged = 1;
163 } else if (!strcmp(cmd, "--perf-dir")) {
164 if (*argc < 2) {
Thiago Farina4c574152010-01-27 21:05:55 -0200165 fprintf(stderr, "No directory given for --perf-dir.\n");
Ingo Molnar07800602009-04-20 15:00:56 +0200166 usage(perf_usage_string);
167 }
168 setenv(PERF_DIR_ENVIRONMENT, (*argv)[1], 1);
169 if (envchanged)
170 *envchanged = 1;
171 (*argv)++;
172 (*argc)--;
173 handled++;
Vincent Legollcfed95a2009-10-13 10:18:16 +0200174 } else if (!prefixcmp(cmd, CMD_PERF_DIR)) {
175 setenv(PERF_DIR_ENVIRONMENT, cmd + strlen(CMD_PERF_DIR), 1);
Ingo Molnar07800602009-04-20 15:00:56 +0200176 if (envchanged)
177 *envchanged = 1;
178 } else if (!strcmp(cmd, "--work-tree")) {
179 if (*argc < 2) {
Thiago Farina4c574152010-01-27 21:05:55 -0200180 fprintf(stderr, "No directory given for --work-tree.\n");
Ingo Molnar07800602009-04-20 15:00:56 +0200181 usage(perf_usage_string);
182 }
183 setenv(PERF_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
184 if (envchanged)
185 *envchanged = 1;
186 (*argv)++;
187 (*argc)--;
Vincent Legollcfed95a2009-10-13 10:18:16 +0200188 } else if (!prefixcmp(cmd, CMD_WORK_TREE)) {
189 setenv(PERF_WORK_TREE_ENVIRONMENT, cmd + strlen(CMD_WORK_TREE), 1);
Ingo Molnar07800602009-04-20 15:00:56 +0200190 if (envchanged)
191 *envchanged = 1;
Jason Baron5beeded2009-07-21 14:16:29 -0400192 } else if (!strcmp(cmd, "--debugfs-dir")) {
193 if (*argc < 2) {
194 fprintf(stderr, "No directory given for --debugfs-dir.\n");
195 usage(perf_usage_string);
196 }
Borislav Petkov13559152013-02-20 16:32:31 +0100197 perf_debugfs_set_path((*argv)[1]);
Jason Baron5beeded2009-07-21 14:16:29 -0400198 if (envchanged)
199 *envchanged = 1;
200 (*argv)++;
201 (*argc)--;
Vincent Legollcfed95a2009-10-13 10:18:16 +0200202 } else if (!prefixcmp(cmd, CMD_DEBUGFS_DIR)) {
Borislav Petkov13559152013-02-20 16:32:31 +0100203 perf_debugfs_set_path(cmd + strlen(CMD_DEBUGFS_DIR));
Arnaldo Carvalho de Meloebf294b2011-11-16 14:03:07 -0200204 fprintf(stderr, "dir: %s\n", debugfs_mountpoint);
Jason Baron5beeded2009-07-21 14:16:29 -0400205 if (envchanged)
206 *envchanged = 1;
Frederic Weisbecker98a41792012-08-09 16:31:51 +0200207 } else if (!strcmp(cmd, "--list-cmds")) {
208 unsigned int i;
209
210 for (i = 0; i < ARRAY_SIZE(commands); i++) {
211 struct cmd_struct *p = commands+i;
212 printf("%s ", p->cmd);
213 }
214 exit(0);
Ingo Molnar07800602009-04-20 15:00:56 +0200215 } else {
216 fprintf(stderr, "Unknown option: %s\n", cmd);
217 usage(perf_usage_string);
218 }
219
220 (*argv)++;
221 (*argc)--;
222 handled++;
223 }
224 return handled;
225}
226
227static int handle_alias(int *argcp, const char ***argv)
228{
229 int envchanged = 0, ret = 0, saved_errno = errno;
230 int count, option_count;
Thiago Farina4c574152010-01-27 21:05:55 -0200231 const char **new_argv;
Ingo Molnar07800602009-04-20 15:00:56 +0200232 const char *alias_command;
233 char *alias_string;
Ingo Molnar07800602009-04-20 15:00:56 +0200234
235 alias_command = (*argv)[0];
236 alias_string = alias_lookup(alias_command);
237 if (alias_string) {
238 if (alias_string[0] == '!') {
239 if (*argcp > 1) {
240 struct strbuf buf;
241
242 strbuf_init(&buf, PATH_MAX);
243 strbuf_addstr(&buf, alias_string);
244 sq_quote_argv(&buf, (*argv) + 1, PATH_MAX);
245 free(alias_string);
246 alias_string = buf.buf;
247 }
248 ret = system(alias_string + 1);
249 if (ret >= 0 && WIFEXITED(ret) &&
250 WEXITSTATUS(ret) != 127)
251 exit(WEXITSTATUS(ret));
252 die("Failed to run '%s' when expanding alias '%s'",
253 alias_string + 1, alias_command);
254 }
255 count = split_cmdline(alias_string, &new_argv);
256 if (count < 0)
257 die("Bad alias.%s string", alias_command);
258 option_count = handle_options(&new_argv, &count, &envchanged);
259 if (envchanged)
260 die("alias '%s' changes environment variables\n"
261 "You can use '!perf' in the alias to do this.",
262 alias_command);
263 memmove(new_argv - option_count, new_argv,
264 count * sizeof(char *));
265 new_argv -= option_count;
266
267 if (count < 1)
268 die("empty alias for %s", alias_command);
269
270 if (!strcmp(alias_command, new_argv[0]))
271 die("recursive alias: %s", alias_command);
272
Thiago Farina4c574152010-01-27 21:05:55 -0200273 new_argv = realloc(new_argv, sizeof(char *) *
Ingo Molnar07800602009-04-20 15:00:56 +0200274 (count + *argcp + 1));
275 /* insert after command name */
Thiago Farina4c574152010-01-27 21:05:55 -0200276 memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);
277 new_argv[count + *argcp] = NULL;
Ingo Molnar07800602009-04-20 15:00:56 +0200278
279 *argv = new_argv;
280 *argcp += count - 1;
281
282 ret = 1;
283 }
284
285 errno = saved_errno;
286
287 return ret;
288}
289
290const char perf_version_string[] = PERF_VERSION;
291
292#define RUN_SETUP (1<<0)
293#define USE_PAGER (1<<1)
294/*
295 * require working tree to be present -- anything uses this needs
296 * RUN_SETUP for reading from the configuration file.
297 */
298#define NEED_WORK_TREE (1<<2)
299
Ingo Molnar07800602009-04-20 15:00:56 +0200300static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
301{
302 int status;
303 struct stat st;
304 const char *prefix;
305
306 prefix = NULL;
307 if (p->option & RUN_SETUP)
308 prefix = NULL; /* setup_perf_directory(); */
309
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -0300310 if (use_browser == -1)
Namhyung Kim0020ce22012-11-12 11:50:17 +0900311 use_browser = check_browser_config(p->cmd);
Arnaldo Carvalho de Melo5d06e692010-05-20 22:01:10 -0300312
Ingo Molnar07800602009-04-20 15:00:56 +0200313 if (use_pager == -1 && p->option & RUN_SETUP)
314 use_pager = check_pager_config(p->cmd);
315 if (use_pager == -1 && p->option & USE_PAGER)
316 use_pager = 1;
317 commit_pager_choice();
318
Ingo Molnar07800602009-04-20 15:00:56 +0200319 status = p->fn(argc, argv, prefix);
Arnaldo Carvalho de Melof3a1f0e2010-03-22 13:10:25 -0300320 exit_browser(status);
321
Ingo Molnar07800602009-04-20 15:00:56 +0200322 if (status)
323 return status & 0xff;
324
325 /* Somebody closed stdout? */
326 if (fstat(fileno(stdout), &st))
327 return 0;
328 /* Ignore write errors for pipes and sockets.. */
329 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
330 return 0;
331
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300332 status = 1;
Ingo Molnar07800602009-04-20 15:00:56 +0200333 /* Check for ENOSPC and EIO errors.. */
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300334 if (fflush(stdout)) {
335 fprintf(stderr, "write failure on standard output: %s", strerror(errno));
336 goto out;
337 }
338 if (ferror(stdout)) {
339 fprintf(stderr, "unknown write failure on standard output");
340 goto out;
341 }
342 if (fclose(stdout)) {
343 fprintf(stderr, "close failed on standard output: %s", strerror(errno));
344 goto out;
345 }
346 status = 0;
347out:
348 return status;
Ingo Molnar07800602009-04-20 15:00:56 +0200349}
350
351static void handle_internal_command(int argc, const char **argv)
352{
353 const char *cmd = argv[0];
Ingo Molnarf37a2912009-07-01 12:37:06 +0200354 unsigned int i;
Ingo Molnar07800602009-04-20 15:00:56 +0200355 static const char ext[] = STRIP_EXTENSION;
356
357 if (sizeof(ext) > 1) {
358 i = strlen(argv[0]) - strlen(ext);
359 if (i > 0 && !strcmp(argv[0] + i, ext)) {
360 char *argv0 = strdup(argv[0]);
361 argv[0] = cmd = argv0;
362 argv0[i] = '\0';
363 }
364 }
365
366 /* Turn "perf cmd --help" into "perf help cmd" */
367 if (argc > 1 && !strcmp(argv[1], "--help")) {
368 argv[1] = argv[0];
369 argv[0] = cmd = "help";
370 }
371
372 for (i = 0; i < ARRAY_SIZE(commands); i++) {
373 struct cmd_struct *p = commands+i;
374 if (strcmp(p->cmd, cmd))
375 continue;
376 exit(run_builtin(p, argc, argv));
377 }
378}
379
380static void execv_dashed_external(const char **argv)
381{
382 struct strbuf cmd = STRBUF_INIT;
383 const char *tmp;
384 int status;
385
386 strbuf_addf(&cmd, "perf-%s", argv[0]);
387
388 /*
389 * argv[0] must be the perf command, but the argv array
390 * belongs to the caller, and may be reused in
391 * subsequent loop iterations. Save argv[0] and
392 * restore it on error.
393 */
394 tmp = argv[0];
395 argv[0] = cmd.buf;
396
397 /*
398 * if we fail because the command is not found, it is
399 * OK to return. Otherwise, we just pass along the status code.
400 */
401 status = run_command_v_opt(argv, 0);
402 if (status != -ERR_RUN_COMMAND_EXEC) {
403 if (IS_RUN_COMMAND_ERR(status))
404 die("unable to run '%s'", argv[0]);
405 exit(-status);
406 }
407 errno = ENOENT; /* as if we called execvp */
408
409 argv[0] = tmp;
410
411 strbuf_release(&cmd);
412}
413
414static int run_argv(int *argcp, const char ***argv)
415{
416 int done_alias = 0;
417
418 while (1) {
419 /* See if it's an internal command */
420 handle_internal_command(*argcp, *argv);
421
422 /* .. then try the external ones */
423 execv_dashed_external(*argv);
424
425 /* It could be an alias -- this works around the insanity
426 * of overriding "perf log" with "perf show" by having
427 * alias.log = show
428 */
429 if (done_alias || !handle_alias(argcp, argv))
430 break;
431 done_alias = 1;
432 }
433
434 return done_alias;
435}
436
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300437static void pthread__block_sigwinch(void)
438{
439 sigset_t set;
440
441 sigemptyset(&set);
442 sigaddset(&set, SIGWINCH);
443 pthread_sigmask(SIG_BLOCK, &set, NULL);
444}
445
446void pthread__unblock_sigwinch(void)
447{
448 sigset_t set;
449
450 sigemptyset(&set);
451 sigaddset(&set, SIGWINCH);
452 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
453}
454
Ingo Molnar07800602009-04-20 15:00:56 +0200455int main(int argc, const char **argv)
456{
457 const char *cmd;
458
Arnaldo Carvalho de Melo0c1fe6b2012-10-06 14:57:10 -0300459 page_size = sysconf(_SC_PAGE_SIZE);
460
Ingo Molnar07800602009-04-20 15:00:56 +0200461 cmd = perf_extract_argv0_path(argv[0]);
462 if (!cmd)
463 cmd = "perf-help";
Jason Baron5beeded2009-07-21 14:16:29 -0400464 /* get debugfs mount point from /proc/mounts */
Borislav Petkov13559152013-02-20 16:32:31 +0100465 perf_debugfs_mount(NULL);
Ingo Molnar07800602009-04-20 15:00:56 +0200466 /*
467 * "perf-xxxx" is the same as "perf xxxx", but we obviously:
468 *
469 * - cannot take flags in between the "perf" and the "xxxx".
470 * - cannot execute it externally (since it would just do
471 * the same thing over again)
472 *
473 * So we just directly call the internal command handler, and
474 * die if that one cannot handle it.
475 */
476 if (!prefixcmp(cmd, "perf-")) {
Peter Zijlstra266dfb02009-05-25 14:45:24 +0200477 cmd += 5;
Ingo Molnar07800602009-04-20 15:00:56 +0200478 argv[0] = cmd;
479 handle_internal_command(argc, argv);
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300480 fprintf(stderr, "cannot handle %s internally", cmd);
481 goto out;
Ingo Molnar07800602009-04-20 15:00:56 +0200482 }
483
484 /* Look for flags.. */
485 argv++;
486 argc--;
487 handle_options(&argv, &argc, NULL);
488 commit_pager_choice();
Stephane Eranian45de34b2010-06-01 21:25:01 +0200489 set_buildid_dir();
490
Ingo Molnar07800602009-04-20 15:00:56 +0200491 if (argc > 0) {
492 if (!prefixcmp(argv[0], "--"))
493 argv[0] += 2;
494 } else {
495 /* The user didn't specify a command; give them help */
Ingo Molnar502fc5c2009-03-13 03:20:49 +0100496 printf("\n usage: %s\n\n", perf_usage_string);
Ingo Molnar07800602009-04-20 15:00:56 +0200497 list_common_cmds_help();
Ingo Molnar502fc5c2009-03-13 03:20:49 +0100498 printf("\n %s\n\n", perf_more_info_string);
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300499 goto out;
Ingo Molnar07800602009-04-20 15:00:56 +0200500 }
501 cmd = argv[0];
502
Jiri Olsa52502bf2012-10-31 15:52:47 +0100503 test_attr__init();
504
Ingo Molnar07800602009-04-20 15:00:56 +0200505 /*
506 * We use PATH to find perf commands, but we prepend some higher
Uwe Kleine-König659431f2010-01-18 16:02:48 +0100507 * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH
Ingo Molnar07800602009-04-20 15:00:56 +0200508 * environment, and the $(perfexecdir) from the Makefile at build
509 * time.
510 */
511 setup_path();
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300512 /*
513 * Block SIGWINCH notifications so that the thread that wants it can
514 * unblock and get syscalls like select interrupted instead of waiting
515 * forever while the signal goes to some other non interested thread.
516 */
517 pthread__block_sigwinch();
Ingo Molnar07800602009-04-20 15:00:56 +0200518
519 while (1) {
Thiago Farina4c574152010-01-27 21:05:55 -0200520 static int done_help;
Arnaldo Carvalho de Melob5ded712013-03-27 11:00:07 -0300521 int was_alias = run_argv(&argc, &argv);
Ingo Molnar8035e422009-06-06 15:19:13 +0200522
Ingo Molnar07800602009-04-20 15:00:56 +0200523 if (errno != ENOENT)
524 break;
Ingo Molnar8035e422009-06-06 15:19:13 +0200525
Ingo Molnar07800602009-04-20 15:00:56 +0200526 if (was_alias) {
527 fprintf(stderr, "Expansion of alias '%s' failed; "
528 "'%s' is not a perf-command\n",
529 cmd, argv[0]);
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300530 goto out;
Ingo Molnar07800602009-04-20 15:00:56 +0200531 }
532 if (!done_help) {
533 cmd = argv[0] = help_unknown_cmd(cmd);
534 done_help = 1;
535 } else
536 break;
537 }
538
539 fprintf(stderr, "Failed to run command '%s': %s\n",
540 cmd, strerror(errno));
Arnaldo Carvalho de Melo2a16bf82013-01-24 15:18:54 -0300541out:
Ingo Molnar07800602009-04-20 15:00:56 +0200542 return 1;
543}