blob: b513e40974f46bf45f816d658d78d574762f5b17 [file] [log] [blame]
Ingo Molnar07800602009-04-20 15:00:56 +02001/*
Ingo Molnarbf9e1872009-06-02 23:37:05 +02002 * builtin-top.c
3 *
4 * Builtin top command: Display a continuously updated profile of
5 * any workload, CPU or specific PID.
6 *
7 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
8 *
9 * Improvements and fixes by:
10 *
11 * Arjan van de Ven <arjan@linux.intel.com>
12 * Yanmin Zhang <yanmin.zhang@intel.com>
13 * Wu Fengguang <fengguang.wu@intel.com>
14 * Mike Galbraith <efault@gmx.de>
15 * Paul Mackerras <paulus@samba.org>
16 *
17 * Released under the GPL v2. (and only v2, not any later version)
Ingo Molnar07800602009-04-20 15:00:56 +020018 */
Ingo Molnarbf9e1872009-06-02 23:37:05 +020019#include "builtin.h"
Ingo Molnar07800602009-04-20 15:00:56 +020020
Peter Zijlstra1a482f32009-05-23 18:28:58 +020021#include "perf.h"
Ingo Molnarbf9e1872009-06-02 23:37:05 +020022
Ingo Molnar8fc03212009-06-04 15:19:47 +020023#include "util/color.h"
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -020024#include "util/session.h"
25#include "util/symbol.h"
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -030026#include "util/thread.h"
Ingo Molnar148be2c2009-04-27 08:02:14 +020027#include "util/util.h"
Arnaldo Carvalho de Melo43cbcd82009-07-01 12:28:37 -030028#include <linux/rbtree.h>
Ingo Molnarb456bae2009-05-26 09:17:18 +020029#include "util/parse-options.h"
30#include "util/parse-events.h"
Paul Mackerrasa12b51c2010-03-10 20:36:09 +110031#include "util/cpumap.h"
Ingo Molnar07800602009-04-20 15:00:56 +020032
Frederic Weisbecker8f288272009-08-16 22:05:48 +020033#include "util/debug.h"
34
Ingo Molnar07800602009-04-20 15:00:56 +020035#include <assert.h>
36#include <fcntl.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020037
Ingo Molnar07800602009-04-20 15:00:56 +020038#include <stdio.h>
Mike Galbraith923c42c2009-07-22 20:36:03 +020039#include <termios.h>
40#include <unistd.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020041
Ingo Molnar07800602009-04-20 15:00:56 +020042#include <errno.h>
Ingo Molnar07800602009-04-20 15:00:56 +020043#include <time.h>
44#include <sched.h>
45#include <pthread.h>
46
47#include <sys/syscall.h>
48#include <sys/ioctl.h>
49#include <sys/poll.h>
50#include <sys/prctl.h>
51#include <sys/wait.h>
52#include <sys/uio.h>
53#include <sys/mman.h>
54
55#include <linux/unistd.h>
56#include <linux/types.h>
57
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030058static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
Ingo Molnara21ca2c2009-06-06 09:58:57 +020059
Ian Munsiec0555642010-04-13 18:37:33 +100060static bool system_wide = false;
Ingo Molnar07800602009-04-20 15:00:56 +020061
Mike Galbraith7e4ff9e2009-10-12 07:56:03 +020062static int default_interval = 0;
Ingo Molnar07800602009-04-20 15:00:56 +020063
Ingo Molnar42e59d72009-10-06 15:14:21 +020064static int count_filter = 5;
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020065static int print_entries;
Ingo Molnar07800602009-04-20 15:00:56 +020066
Ingo Molnar42e59d72009-10-06 15:14:21 +020067static int target_pid = -1;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030068static int target_tid = -1;
69static pid_t *all_tids = NULL;
70static int thread_num = 0;
Ian Munsiec0555642010-04-13 18:37:33 +100071static bool inherit = false;
Ingo Molnar42e59d72009-10-06 15:14:21 +020072static int profile_cpu = -1;
73static int nr_cpus = 0;
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -030074static int realtime_prio = 0;
Ian Munsiec0555642010-04-13 18:37:33 +100075static bool group = false;
Ingo Molnar07800602009-04-20 15:00:56 +020076static unsigned int page_size;
Ingo Molnar42e59d72009-10-06 15:14:21 +020077static unsigned int mmap_pages = 16;
78static int freq = 1000; /* 1 KHz */
Ingo Molnar07800602009-04-20 15:00:56 +020079
Ingo Molnar42e59d72009-10-06 15:14:21 +020080static int delay_secs = 2;
Ian Munsiec0555642010-04-13 18:37:33 +100081static bool zero = false;
82static bool dump_symtab = false;
Ingo Molnar07800602009-04-20 15:00:56 +020083
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -020084static bool hide_kernel_symbols = false;
85static bool hide_user_symbols = false;
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -020086static struct winsize winsize;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -020087
Ingo Molnar07800602009-04-20 15:00:56 +020088/*
Mike Galbraith923c42c2009-07-22 20:36:03 +020089 * Source
90 */
91
92struct source_line {
93 u64 eip;
94 unsigned long count[MAX_COUNTERS];
95 char *line;
96 struct source_line *next;
97};
98
Arnaldo Carvalho de Meloedb7c602010-05-17 16:22:41 -030099static const char *sym_filter = NULL;
Ingo Molnar42e59d72009-10-06 15:14:21 +0200100struct sym_entry *sym_filter_entry = NULL;
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200101struct sym_entry *sym_filter_entry_sched = NULL;
Ingo Molnar42e59d72009-10-06 15:14:21 +0200102static int sym_pcnt_filter = 5;
103static int sym_counter = 0;
104static int display_weighted = -1;
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200105static const char *cpu_list;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200106
107/*
Ingo Molnar07800602009-04-20 15:00:56 +0200108 * Symbols
109 */
110
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200111struct sym_entry_source {
112 struct source_line *source;
113 struct source_line *lines;
114 struct source_line **lines_tail;
115 pthread_mutex_t lock;
116};
117
Ingo Molnar07800602009-04-20 15:00:56 +0200118struct sym_entry {
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300119 struct rb_node rb_node;
120 struct list_head node;
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300121 unsigned long snap_count;
122 double weight;
Ingo Molnar07800602009-04-20 15:00:56 +0200123 int skip;
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200124 u16 name_len;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200125 u8 origin;
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300126 struct map *map;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200127 struct sym_entry_source *src;
Arnaldo Carvalho de Melo5a8e5a32009-11-17 18:38:01 -0200128 unsigned long count[0];
Ingo Molnar07800602009-04-20 15:00:56 +0200129};
130
Mike Galbraith923c42c2009-07-22 20:36:03 +0200131/*
132 * Source functions
133 */
134
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200135static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
136{
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -0200137 return ((void *)self) + symbol_conf.priv_size;
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200138}
139
Arnaldo Carvalho de Melo895f0ed2010-03-11 20:12:41 -0300140void get_term_dimensions(struct winsize *ws)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200141{
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200142 char *s = getenv("LINES");
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200143
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200144 if (s != NULL) {
145 ws->ws_row = atoi(s);
146 s = getenv("COLUMNS");
147 if (s != NULL) {
148 ws->ws_col = atoi(s);
149 if (ws->ws_row && ws->ws_col)
150 return;
151 }
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200152 }
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200153#ifdef TIOCGWINSZ
154 if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
155 ws->ws_row && ws->ws_col)
156 return;
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200157#endif
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200158 ws->ws_row = 25;
159 ws->ws_col = 80;
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200160}
161
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200162static void update_print_entries(struct winsize *ws)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200163{
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200164 print_entries = ws->ws_row;
165
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200166 if (print_entries > 9)
167 print_entries -= 9;
168}
169
170static void sig_winch_handler(int sig __used)
171{
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200172 get_term_dimensions(&winsize);
173 update_print_entries(&winsize);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200174}
175
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300176static int parse_source(struct sym_entry *syme)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200177{
178 struct symbol *sym;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200179 struct sym_entry_source *source;
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300180 struct map *map;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200181 FILE *file;
Ingo Molnar83a09442009-08-15 12:26:57 +0200182 char command[PATH_MAX*2];
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300183 const char *path;
184 u64 len;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200185
186 if (!syme)
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300187 return -1;
188
189 sym = sym_entry__symbol(syme);
190 map = syme->map;
191
192 /*
193 * We can't annotate with just /proc/kallsyms
194 */
195 if (map->dso->origin == DSO__ORIG_KERNEL)
196 return -1;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200197
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200198 if (syme->src == NULL) {
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200199 syme->src = zalloc(sizeof(*source));
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200200 if (syme->src == NULL)
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300201 return -1;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200202 pthread_mutex_init(&syme->src->lock, NULL);
203 }
204
205 source = syme->src;
206
207 if (source->lines) {
208 pthread_mutex_lock(&source->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200209 goto out_assign;
210 }
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300211 path = map->dso->long_name;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200212
Mike Galbraith923c42c2009-07-22 20:36:03 +0200213 len = sym->end - sym->start;
214
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300215 sprintf(command,
Arnaldo Carvalho de Melo5f485362010-02-07 11:46:16 -0200216 "objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s",
217 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start),
218 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200219
220 file = popen(command, "r");
221 if (!file)
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300222 return -1;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200223
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200224 pthread_mutex_lock(&source->lock);
225 source->lines_tail = &source->lines;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200226 while (!feof(file)) {
227 struct source_line *src;
228 size_t dummy = 0;
Kirill Smelkovee11b902010-02-07 11:46:15 -0200229 char *c, *sep;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200230
231 src = malloc(sizeof(struct source_line));
232 assert(src != NULL);
233 memset(src, 0, sizeof(struct source_line));
234
235 if (getline(&src->line, &dummy, file) < 0)
236 break;
237 if (!src->line)
238 break;
239
240 c = strchr(src->line, '\n');
241 if (c)
242 *c = 0;
243
244 src->next = NULL;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200245 *source->lines_tail = src;
246 source->lines_tail = &src->next;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200247
Kirill Smelkovee11b902010-02-07 11:46:15 -0200248 src->eip = strtoull(src->line, &sep, 16);
249 if (*sep == ':')
250 src->eip = map__objdump_2ip(map, src->eip);
251 else /* this line has no ip info (e.g. source line) */
252 src->eip = 0;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200253 }
254 pclose(file);
255out_assign:
256 sym_filter_entry = syme;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200257 pthread_mutex_unlock(&source->lock);
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300258 return 0;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200259}
260
261static void __zero_source_counters(struct sym_entry *syme)
262{
263 int i;
264 struct source_line *line;
265
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200266 line = syme->src->lines;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200267 while (line) {
268 for (i = 0; i < nr_counters; i++)
269 line->count[i] = 0;
270 line = line->next;
271 }
272}
273
274static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
275{
276 struct source_line *line;
277
278 if (syme != sym_filter_entry)
279 return;
280
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200281 if (pthread_mutex_trylock(&syme->src->lock))
Mike Galbraith923c42c2009-07-22 20:36:03 +0200282 return;
283
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200284 if (syme->src == NULL || syme->src->source == NULL)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200285 goto out_unlock;
286
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200287 for (line = syme->src->lines; line; line = line->next) {
Kirill Smelkovee11b902010-02-07 11:46:15 -0200288 /* skip lines without IP info */
289 if (line->eip == 0)
290 continue;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200291 if (line->eip == ip) {
292 line->count[counter]++;
293 break;
294 }
295 if (line->eip > ip)
296 break;
297 }
298out_unlock:
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200299 pthread_mutex_unlock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200300}
301
Arnaldo Carvalho de Meloc7ad21a2010-02-22 16:14:22 -0300302#define PATTERN_LEN (BITS_PER_LONG / 4 + 2)
303
Mike Galbraith923c42c2009-07-22 20:36:03 +0200304static void lookup_sym_source(struct sym_entry *syme)
305{
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200306 struct symbol *symbol = sym_entry__symbol(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200307 struct source_line *line;
Arnaldo Carvalho de Meloc7ad21a2010-02-22 16:14:22 -0300308 char pattern[PATTERN_LEN + 1];
Mike Galbraith923c42c2009-07-22 20:36:03 +0200309
Arnaldo Carvalho de Melo5f485362010-02-07 11:46:16 -0200310 sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4,
311 map__rip_2objdump(syme->map, symbol->start));
Mike Galbraith923c42c2009-07-22 20:36:03 +0200312
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200313 pthread_mutex_lock(&syme->src->lock);
314 for (line = syme->src->lines; line; line = line->next) {
Arnaldo Carvalho de Meloc7ad21a2010-02-22 16:14:22 -0300315 if (memcmp(line->line, pattern, PATTERN_LEN) == 0) {
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200316 syme->src->source = line;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200317 break;
318 }
319 }
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200320 pthread_mutex_unlock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200321}
322
323static void show_lines(struct source_line *queue, int count, int total)
324{
325 int i;
326 struct source_line *line;
327
328 line = queue;
329 for (i = 0; i < count; i++) {
330 float pcnt = 100.0*(float)line->count[sym_counter]/(float)total;
331
332 printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line);
333 line = line->next;
334 }
335}
336
337#define TRACE_COUNT 3
338
339static void show_details(struct sym_entry *syme)
340{
341 struct symbol *symbol;
342 struct source_line *line;
343 struct source_line *line_queue = NULL;
344 int displayed = 0;
345 int line_queue_count = 0, total = 0, more = 0;
346
347 if (!syme)
348 return;
349
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200350 if (!syme->src->source)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200351 lookup_sym_source(syme);
352
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200353 if (!syme->src->source)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200354 return;
355
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200356 symbol = sym_entry__symbol(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200357 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
358 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
359
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200360 pthread_mutex_lock(&syme->src->lock);
361 line = syme->src->source;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200362 while (line) {
363 total += line->count[sym_counter];
364 line = line->next;
365 }
366
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200367 line = syme->src->source;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200368 while (line) {
369 float pcnt = 0.0;
370
371 if (!line_queue_count)
372 line_queue = line;
373 line_queue_count++;
374
375 if (line->count[sym_counter])
376 pcnt = 100.0 * line->count[sym_counter] / (float)total;
377 if (pcnt >= (float)sym_pcnt_filter) {
378 if (displayed <= print_entries)
379 show_lines(line_queue, line_queue_count, total);
380 else more++;
381 displayed += line_queue_count;
382 line_queue_count = 0;
383 line_queue = NULL;
384 } else if (line_queue_count > TRACE_COUNT) {
385 line_queue = line_queue->next;
386 line_queue_count--;
387 }
388
389 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
390 line = line->next;
391 }
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200392 pthread_mutex_unlock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200393 if (more)
394 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
395}
Ingo Molnar07800602009-04-20 15:00:56 +0200396
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300397/*
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200398 * Symbols will be added here in event__process_sample and will get out
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300399 * after decayed.
400 */
401static LIST_HEAD(active_symbols);
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300402static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER;
Ingo Molnar07800602009-04-20 15:00:56 +0200403
Ingo Molnar07800602009-04-20 15:00:56 +0200404/*
405 * Ordering weight: count-1 * count-2 * ... / count-n
406 */
407static double sym_weight(const struct sym_entry *sym)
408{
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300409 double weight = sym->snap_count;
Ingo Molnar07800602009-04-20 15:00:56 +0200410 int counter;
411
Mike Galbraith46ab9762009-07-24 10:09:50 +0200412 if (!display_weighted)
413 return weight;
414
Ingo Molnar07800602009-04-20 15:00:56 +0200415 for (counter = 1; counter < nr_counters-1; counter++)
416 weight *= sym->count[counter];
417
418 weight /= (sym->count[counter] + 1);
419
420 return weight;
421}
422
Ingo Molnar2debbc82009-06-05 14:29:10 +0200423static long samples;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800424static long kernel_samples, us_samples;
Peter Zijlstra1676b8a2010-03-04 14:19:36 +0100425static long exact_samples;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800426static long guest_us_samples, guest_kernel_samples;
Ingo Molnar07800602009-04-20 15:00:56 +0200427static const char CONSOLE_CLEAR[] = "";
428
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300429static void __list_insert_active_sym(struct sym_entry *syme)
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300430{
431 list_add(&syme->node, &active_symbols);
432}
433
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300434static void list_remove_active_sym(struct sym_entry *syme)
435{
436 pthread_mutex_lock(&active_symbols_lock);
437 list_del_init(&syme->node);
438 pthread_mutex_unlock(&active_symbols_lock);
439}
440
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300441static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
442{
443 struct rb_node **p = &tree->rb_node;
444 struct rb_node *parent = NULL;
445 struct sym_entry *iter;
446
447 while (*p != NULL) {
448 parent = *p;
449 iter = rb_entry(parent, struct sym_entry, rb_node);
450
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300451 if (se->weight > iter->weight)
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300452 p = &(*p)->rb_left;
453 else
454 p = &(*p)->rb_right;
455 }
456
457 rb_link_node(&se->rb_node, parent, p);
458 rb_insert_color(&se->rb_node, tree);
459}
Ingo Molnar07800602009-04-20 15:00:56 +0200460
461static void print_sym_table(void)
462{
Ingo Molnar233f0b92009-06-03 21:48:40 +0200463 int printed = 0, j;
Mike Galbraith46ab9762009-07-24 10:09:50 +0200464 int counter, snap = !display_weighted ? sym_counter : 0;
Ingo Molnar2debbc82009-06-05 14:29:10 +0200465 float samples_per_sec = samples/delay_secs;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800466 float ksamples_per_sec = kernel_samples/delay_secs;
467 float us_samples_per_sec = (us_samples)/delay_secs;
468 float guest_kernel_samples_per_sec = (guest_kernel_samples)/delay_secs;
469 float guest_us_samples_per_sec = (guest_us_samples)/delay_secs;
Peter Zijlstra1676b8a2010-03-04 14:19:36 +0100470 float esamples_percent = (100.0*exact_samples)/samples;
Ingo Molnar2debbc82009-06-05 14:29:10 +0200471 float sum_ksamples = 0.0;
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300472 struct sym_entry *syme, *n;
473 struct rb_root tmp = RB_ROOT;
474 struct rb_node *nd;
Arnaldo Carvalho de Melo00909e92010-03-16 18:28:46 -0300475 int sym_width = 0, dso_width = 0, dso_short_width = 0;
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200476 const int win_width = winsize.ws_col - 1;
Ingo Molnar07800602009-04-20 15:00:56 +0200477
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800478 samples = us_samples = kernel_samples = exact_samples = 0;
479 guest_kernel_samples = guest_us_samples = 0;
Ingo Molnar07800602009-04-20 15:00:56 +0200480
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300481 /* Sort the active symbols */
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300482 pthread_mutex_lock(&active_symbols_lock);
483 syme = list_entry(active_symbols.next, struct sym_entry, node);
484 pthread_mutex_unlock(&active_symbols_lock);
485
486 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
Mike Galbraith46ab9762009-07-24 10:09:50 +0200487 syme->snap_count = syme->count[snap];
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300488 if (syme->snap_count != 0) {
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200489
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200490 if ((hide_user_symbols &&
491 syme->origin == PERF_RECORD_MISC_USER) ||
492 (hide_kernel_symbols &&
493 syme->origin == PERF_RECORD_MISC_KERNEL)) {
494 list_remove_active_sym(syme);
495 continue;
496 }
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300497 syme->weight = sym_weight(syme);
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300498 rb_insert_active_sym(&tmp, syme);
Ingo Molnar2debbc82009-06-05 14:29:10 +0200499 sum_ksamples += syme->snap_count;
Mike Galbraithd94b9432009-05-25 09:57:56 +0200500
501 for (j = 0; j < nr_counters; j++)
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300502 syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
503 } else
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300504 list_remove_active_sym(syme);
Mike Galbraithd94b9432009-05-25 09:57:56 +0200505 }
506
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200507 puts(CONSOLE_CLEAR);
Ingo Molnar07800602009-04-20 15:00:56 +0200508
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200509 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800510 if (!perf_guest) {
511 printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
512 " exact: %4.1f%% [",
513 samples_per_sec,
514 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
515 samples_per_sec)),
516 esamples_percent);
517 } else {
518 printf(" PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
519 " guest kernel:%4.1f%% guest us:%4.1f%%"
520 " exact: %4.1f%% [",
521 samples_per_sec,
522 100.0 - (100.0 * ((samples_per_sec-ksamples_per_sec) /
523 samples_per_sec)),
524 100.0 - (100.0 * ((samples_per_sec-us_samples_per_sec) /
525 samples_per_sec)),
526 100.0 - (100.0 * ((samples_per_sec -
527 guest_kernel_samples_per_sec) /
528 samples_per_sec)),
529 100.0 - (100.0 * ((samples_per_sec -
530 guest_us_samples_per_sec) /
531 samples_per_sec)),
532 esamples_percent);
533 }
Ingo Molnar07800602009-04-20 15:00:56 +0200534
Mike Galbraith46ab9762009-07-24 10:09:50 +0200535 if (nr_counters == 1 || !display_weighted) {
Paul Mackerras9cffa8d2009-06-19 22:21:42 +1000536 printf("%Ld", (u64)attrs[0].sample_period);
Ingo Molnarcf1f4572009-06-05 13:27:02 +0200537 if (freq)
538 printf("Hz ");
539 else
540 printf(" ");
541 }
Ingo Molnar07800602009-04-20 15:00:56 +0200542
Mike Galbraith46ab9762009-07-24 10:09:50 +0200543 if (!display_weighted)
544 printf("%s", event_name(sym_counter));
545 else for (counter = 0; counter < nr_counters; counter++) {
Ingo Molnar07800602009-04-20 15:00:56 +0200546 if (counter)
547 printf("/");
548
549 printf("%s", event_name(counter));
550 }
551
552 printf( "], ");
553
Ingo Molnarb456bae2009-05-26 09:17:18 +0200554 if (target_pid != -1)
555 printf(" (target_pid: %d", target_pid);
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300556 else if (target_tid != -1)
557 printf(" (target_tid: %d", target_tid);
Ingo Molnar07800602009-04-20 15:00:56 +0200558 else
559 printf(" (all");
560
561 if (profile_cpu != -1)
562 printf(", cpu: %d)\n", profile_cpu);
563 else {
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300564 if (target_tid != -1)
Ingo Molnar07800602009-04-20 15:00:56 +0200565 printf(")\n");
566 else
567 printf(", %d CPUs)\n", nr_cpus);
568 }
569
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200570 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
Ingo Molnar07800602009-04-20 15:00:56 +0200571
Mike Galbraith923c42c2009-07-22 20:36:03 +0200572 if (sym_filter_entry) {
573 show_details(sym_filter_entry);
574 return;
575 }
576
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200577 /*
578 * Find the longest symbol name that will be displayed
579 */
580 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
581 syme = rb_entry(nd, struct sym_entry, rb_node);
582 if (++printed > print_entries ||
583 (int)syme->snap_count < count_filter)
584 continue;
585
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200586 if (syme->map->dso->long_name_len > dso_width)
587 dso_width = syme->map->dso->long_name_len;
588
Arnaldo Carvalho de Melob63be8d2010-03-15 15:03:50 -0300589 if (syme->map->dso->short_name_len > dso_short_width)
590 dso_short_width = syme->map->dso->short_name_len;
591
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200592 if (syme->name_len > sym_width)
593 sym_width = syme->name_len;
594 }
595
596 printed = 0;
597
Arnaldo Carvalho de Melob63be8d2010-03-15 15:03:50 -0300598 if (sym_width + dso_width > winsize.ws_col - 29) {
599 dso_width = dso_short_width;
600 if (sym_width + dso_width > winsize.ws_col - 29)
601 sym_width = winsize.ws_col - dso_width - 29;
602 }
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200603 putchar('\n');
Ingo Molnar07800602009-04-20 15:00:56 +0200604 if (nr_counters == 1)
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200605 printf(" samples pcnt");
Ingo Molnar07800602009-04-20 15:00:56 +0200606 else
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200607 printf(" weight samples pcnt");
Ingo Molnar07800602009-04-20 15:00:56 +0200608
Arnaldo Carvalho de Melo7ced1562009-08-26 11:51:26 -0300609 if (verbose)
610 printf(" RIP ");
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200611 printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200612 printf(" %s _______ _____",
Arnaldo Carvalho de Melo7ced1562009-08-26 11:51:26 -0300613 nr_counters == 1 ? " " : "______");
614 if (verbose)
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200615 printf(" ________________");
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200616 printf(" %-*.*s", sym_width, sym_width, graph_line);
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200617 printf(" %-*.*s", dso_width, dso_width, graph_line);
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200618 puts("\n");
Ingo Molnar07800602009-04-20 15:00:56 +0200619
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300620 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
Ingo Molnar83a09442009-08-15 12:26:57 +0200621 struct symbol *sym;
Ingo Molnar8fc03212009-06-04 15:19:47 +0200622 double pcnt;
Ingo Molnar07800602009-04-20 15:00:56 +0200623
Ingo Molnar83a09442009-08-15 12:26:57 +0200624 syme = rb_entry(nd, struct sym_entry, rb_node);
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200625 sym = sym_entry__symbol(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200626 if (++printed > print_entries || (int)syme->snap_count < count_filter)
Arnaldo Carvalho de Meloc44613a2009-05-29 17:03:07 -0300627 continue;
Ingo Molnar07800602009-04-20 15:00:56 +0200628
Ingo Molnar2debbc82009-06-05 14:29:10 +0200629 pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
630 sum_ksamples));
Mike Galbraithd94b9432009-05-25 09:57:56 +0200631
Mike Galbraith46ab9762009-07-24 10:09:50 +0200632 if (nr_counters == 1 || !display_weighted)
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200633 printf("%20.2f ", syme->weight);
Mike Galbraithd94b9432009-05-25 09:57:56 +0200634 else
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200635 printf("%9.1f %10ld ", syme->weight, syme->snap_count);
Ingo Molnar8fc03212009-06-04 15:19:47 +0200636
Frederic Weisbecker1e11fd82009-07-02 20:14:34 +0200637 percent_color_fprintf(stdout, "%4.1f%%", pcnt);
Arnaldo Carvalho de Melo7ced1562009-08-26 11:51:26 -0300638 if (verbose)
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200639 printf(" %016llx", sym->start);
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200640 printf(" %-*.*s", sym_width, sym_width, sym->name);
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200641 printf(" %-*.*s\n", dso_width, dso_width,
642 dso_width >= syme->map->dso->long_name_len ?
643 syme->map->dso->long_name :
644 syme->map->dso->short_name);
Ingo Molnar07800602009-04-20 15:00:56 +0200645 }
Ingo Molnar07800602009-04-20 15:00:56 +0200646}
647
Mike Galbraith923c42c2009-07-22 20:36:03 +0200648static void prompt_integer(int *target, const char *msg)
649{
650 char *buf = malloc(0), *p;
651 size_t dummy = 0;
652 int tmp;
653
654 fprintf(stdout, "\n%s: ", msg);
655 if (getline(&buf, &dummy, stdin) < 0)
656 return;
657
658 p = strchr(buf, '\n');
659 if (p)
660 *p = 0;
661
662 p = buf;
663 while(*p) {
664 if (!isdigit(*p))
665 goto out_free;
666 p++;
667 }
668 tmp = strtoul(buf, NULL, 10);
669 *target = tmp;
670out_free:
671 free(buf);
672}
673
674static void prompt_percent(int *target, const char *msg)
675{
676 int tmp = 0;
677
678 prompt_integer(&tmp, msg);
679 if (tmp >= 0 && tmp <= 100)
680 *target = tmp;
681}
682
683static void prompt_symbol(struct sym_entry **target, const char *msg)
684{
685 char *buf = malloc(0), *p;
686 struct sym_entry *syme = *target, *n, *found = NULL;
687 size_t dummy = 0;
688
689 /* zero counters of active symbol */
690 if (syme) {
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200691 pthread_mutex_lock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200692 __zero_source_counters(syme);
693 *target = NULL;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200694 pthread_mutex_unlock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200695 }
696
697 fprintf(stdout, "\n%s: ", msg);
698 if (getline(&buf, &dummy, stdin) < 0)
699 goto out_free;
700
701 p = strchr(buf, '\n');
702 if (p)
703 *p = 0;
704
705 pthread_mutex_lock(&active_symbols_lock);
706 syme = list_entry(active_symbols.next, struct sym_entry, node);
707 pthread_mutex_unlock(&active_symbols_lock);
708
709 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200710 struct symbol *sym = sym_entry__symbol(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200711
712 if (!strcmp(buf, sym->name)) {
713 found = syme;
714 break;
715 }
716 }
717
718 if (!found) {
Kirill Smelkov66aeb6d2010-01-13 13:22:19 -0200719 fprintf(stderr, "Sorry, %s is not active.\n", buf);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200720 sleep(1);
721 return;
722 } else
723 parse_source(found);
724
725out_free:
726 free(buf);
727}
728
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200729static void print_mapped_keys(void)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200730{
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200731 char *name = NULL;
732
733 if (sym_filter_entry) {
Arnaldo Carvalho de Melo51a472d2009-11-17 18:38:00 -0200734 struct symbol *sym = sym_entry__symbol(sym_filter_entry);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200735 name = sym->name;
736 }
737
738 fprintf(stdout, "\nMapped keys:\n");
739 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs);
740 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries);
741
742 if (nr_counters > 1)
743 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter));
744
745 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
746
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200747 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
748 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
749 fprintf(stdout, "\t[S] stop annotation.\n");
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200750
751 if (nr_counters > 1)
752 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
753
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200754 fprintf(stdout,
Kirill Smelkov1a72cfa2010-02-12 19:20:59 +0300755 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200756 hide_kernel_symbols ? "yes" : "no");
757 fprintf(stdout,
758 "\t[U] hide user symbols. \t(%s)\n",
759 hide_user_symbols ? "yes" : "no");
Mike Galbraith46ab9762009-07-24 10:09:50 +0200760 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200761 fprintf(stdout, "\t[qQ] quit.\n");
762}
763
764static int key_mapped(int c)
765{
766 switch (c) {
767 case 'd':
768 case 'e':
769 case 'f':
770 case 'z':
771 case 'q':
772 case 'Q':
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200773 case 'K':
774 case 'U':
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200775 case 'F':
776 case 's':
777 case 'S':
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200778 return 1;
779 case 'E':
780 case 'w':
781 return nr_counters > 1 ? 1 : 0;
Ingo Molnar83a09442009-08-15 12:26:57 +0200782 default:
783 break;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200784 }
785
786 return 0;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200787}
788
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800789static void handle_keypress(struct perf_session *session, int c)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200790{
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200791 if (!key_mapped(c)) {
792 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
793 struct termios tc, save;
794
795 print_mapped_keys();
796 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
797 fflush(stdout);
798
799 tcgetattr(0, &save);
800 tc = save;
801 tc.c_lflag &= ~(ICANON | ECHO);
802 tc.c_cc[VMIN] = 0;
803 tc.c_cc[VTIME] = 0;
804 tcsetattr(0, TCSANOW, &tc);
805
806 poll(&stdin_poll, 1, -1);
807 c = getc(stdin);
808
809 tcsetattr(0, TCSAFLUSH, &save);
810 if (!key_mapped(c))
811 return;
812 }
813
Mike Galbraith923c42c2009-07-22 20:36:03 +0200814 switch (c) {
815 case 'd':
816 prompt_integer(&delay_secs, "Enter display delay");
Tim Blechmanndc799592009-10-17 18:08:29 +0200817 if (delay_secs < 1)
818 delay_secs = 1;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200819 break;
820 case 'e':
821 prompt_integer(&print_entries, "Enter display entries (lines)");
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200822 if (print_entries == 0) {
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200823 sig_winch_handler(SIGWINCH);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200824 signal(SIGWINCH, sig_winch_handler);
825 } else
826 signal(SIGWINCH, SIG_DFL);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200827 break;
828 case 'E':
829 if (nr_counters > 1) {
830 int i;
831
832 fprintf(stderr, "\nAvailable events:");
833 for (i = 0; i < nr_counters; i++)
834 fprintf(stderr, "\n\t%d %s", i, event_name(i));
835
836 prompt_integer(&sym_counter, "Enter details event counter");
837
838 if (sym_counter >= nr_counters) {
839 fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0));
840 sym_counter = 0;
841 sleep(1);
842 }
843 } else sym_counter = 0;
844 break;
845 case 'f':
846 prompt_integer(&count_filter, "Enter display event count filter");
847 break;
848 case 'F':
849 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
850 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200851 case 'K':
852 hide_kernel_symbols = !hide_kernel_symbols;
853 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200854 case 'q':
855 case 'Q':
856 printf("exiting.\n");
Arnaldo Carvalho de Meloc338aee2009-11-20 20:51:27 -0200857 if (dump_symtab)
Arnaldo Carvalho de Melocbf69682010-04-27 21:22:44 -0300858 perf_session__fprintf_dsos(session, stderr);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200859 exit(0);
860 case 's':
861 prompt_symbol(&sym_filter_entry, "Enter details symbol");
862 break;
863 case 'S':
864 if (!sym_filter_entry)
865 break;
866 else {
867 struct sym_entry *syme = sym_filter_entry;
868
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200869 pthread_mutex_lock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200870 sym_filter_entry = NULL;
871 __zero_source_counters(syme);
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200872 pthread_mutex_unlock(&syme->src->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200873 }
874 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200875 case 'U':
876 hide_user_symbols = !hide_user_symbols;
877 break;
Mike Galbraith46ab9762009-07-24 10:09:50 +0200878 case 'w':
879 display_weighted = ~display_weighted;
880 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200881 case 'z':
Ian Munsiec0555642010-04-13 18:37:33 +1000882 zero = !zero;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200883 break;
Ingo Molnar83a09442009-08-15 12:26:57 +0200884 default:
885 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200886 }
887}
888
Ingo Molnarf37a2912009-07-01 12:37:06 +0200889static void *display_thread(void *arg __used)
Ingo Molnar07800602009-04-20 15:00:56 +0200890{
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200891 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
Mike Galbraith923c42c2009-07-22 20:36:03 +0200892 struct termios tc, save;
893 int delay_msecs, c;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800894 struct perf_session *session = (struct perf_session *) arg;
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200895
Mike Galbraith923c42c2009-07-22 20:36:03 +0200896 tcgetattr(0, &save);
897 tc = save;
898 tc.c_lflag &= ~(ICANON | ECHO);
899 tc.c_cc[VMIN] = 0;
900 tc.c_cc[VTIME] = 0;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200901
Mike Galbraith923c42c2009-07-22 20:36:03 +0200902repeat:
903 delay_msecs = delay_secs * 1000;
904 tcsetattr(0, TCSANOW, &tc);
905 /* trash return*/
906 getc(stdin);
Ingo Molnar07800602009-04-20 15:00:56 +0200907
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200908 do {
Ingo Molnar07800602009-04-20 15:00:56 +0200909 print_sym_table();
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200910 } while (!poll(&stdin_poll, 1, delay_msecs) == 1);
911
Mike Galbraith923c42c2009-07-22 20:36:03 +0200912 c = getc(stdin);
913 tcsetattr(0, TCSAFLUSH, &save);
914
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800915 handle_keypress(session, c);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200916 goto repeat;
Ingo Molnar07800602009-04-20 15:00:56 +0200917
918 return NULL;
919}
920
Anton Blanchard2ab52082009-07-01 09:00:46 +1000921/* Tag samples to be skipped. */
Ingo Molnarf37a2912009-07-01 12:37:06 +0200922static const char *skip_symbols[] = {
Anton Blanchard2ab52082009-07-01 09:00:46 +1000923 "default_idle",
924 "cpu_idle",
925 "enter_idle",
926 "exit_idle",
927 "mwait_idle",
Arnaldo Carvalho de Melo59b90052009-07-26 19:06:19 -0300928 "mwait_idle_with_hints",
Arnaldo Carvalho de Melo83572752009-09-25 15:02:39 -0700929 "poll_idle",
Anton Blanchard3a3393e2009-07-01 09:00:47 +1000930 "ppc64_runlatch_off",
931 "pseries_dedicated_idle_sleep",
Anton Blanchard2ab52082009-07-01 09:00:46 +1000932 NULL
933};
934
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300935static int symbol_filter(struct map *map, struct symbol *sym)
Ingo Molnar07800602009-04-20 15:00:56 +0200936{
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300937 struct sym_entry *syme;
938 const char *name = sym->name;
Anton Blanchard2ab52082009-07-01 09:00:46 +1000939 int i;
Ingo Molnar07800602009-04-20 15:00:56 +0200940
Anton Blanchard3a3393e2009-07-01 09:00:47 +1000941 /*
942 * ppc64 uses function descriptors and appends a '.' to the
943 * start of every instruction address. Remove it.
944 */
945 if (name[0] == '.')
946 name++;
947
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300948 if (!strcmp(name, "_text") ||
949 !strcmp(name, "_etext") ||
950 !strcmp(name, "_sinittext") ||
951 !strncmp("init_module", name, 11) ||
952 !strncmp("cleanup_module", name, 14) ||
953 strstr(name, "_text_start") ||
954 strstr(name, "_text_end"))
Ingo Molnar07800602009-04-20 15:00:56 +0200955 return 1;
956
Arnaldo Carvalho de Melo00a192b2009-10-30 16:28:24 -0200957 syme = symbol__priv(sym);
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -0300958 syme->map = map;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200959 syme->src = NULL;
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200960
961 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
962 /* schedule initial sym_filter_entry setup */
963 sym_filter_entry_sched = syme;
964 sym_filter = NULL;
965 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200966
Anton Blanchard2ab52082009-07-01 09:00:46 +1000967 for (i = 0; skip_symbols[i]; i++) {
968 if (!strcmp(skip_symbols[i], name)) {
969 syme->skip = 1;
970 break;
971 }
972 }
Ingo Molnar07800602009-04-20 15:00:56 +0200973
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -0200974 if (!syme->skip)
975 syme->name_len = strlen(sym->name);
976
Ingo Molnar07800602009-04-20 15:00:56 +0200977 return 0;
978}
979
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200980static void event__process_sample(const event_t *self,
981 struct perf_session *session, int counter)
Ingo Molnar07800602009-04-20 15:00:56 +0200982{
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200983 u64 ip = self->ip.ip;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200984 struct sym_entry *syme;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200985 struct addr_location al;
Arnaldo Carvalho de Melo41a37e22010-06-04 08:02:07 -0300986 struct sample_data data;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300987 struct machine *machine;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200988 u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
Ingo Molnar07800602009-04-20 15:00:56 +0200989
Arnaldo Carvalho de Melo24bfef02010-01-21 13:04:43 -0200990 ++samples;
991
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200992 switch (origin) {
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200993 case PERF_RECORD_MISC_USER:
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800994 ++us_samples;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200995 if (hide_user_symbols)
996 return;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300997 machine = perf_session__find_host_machine(session);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200998 break;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200999 case PERF_RECORD_MISC_KERNEL:
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001000 ++kernel_samples;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001001 if (hide_kernel_symbols)
1002 return;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -03001003 machine = perf_session__find_host_machine(session);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001004 break;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001005 case PERF_RECORD_MISC_GUEST_KERNEL:
1006 ++guest_kernel_samples;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -03001007 machine = perf_session__find_machine(session, self->ip.pid);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001008 break;
1009 case PERF_RECORD_MISC_GUEST_USER:
1010 ++guest_us_samples;
1011 /*
1012 * TODO: we don't process guest user from host side
1013 * except simple counting.
1014 */
1015 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001016 default:
Ingo Molnar07800602009-04-20 15:00:56 +02001017 return;
1018 }
1019
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -03001020 if (!machine && perf_guest) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001021 pr_err("Can't find guest [%d]'s kernel information\n",
1022 self->ip.pid);
1023 return;
1024 }
1025
Peter Zijlstraab608342010-04-08 23:03:20 +02001026 if (self->header.misc & PERF_RECORD_MISC_EXACT_IP)
Peter Zijlstra1676b8a2010-03-04 14:19:36 +01001027 exact_samples++;
1028
Arnaldo Carvalho de Melo41a37e22010-06-04 08:02:07 -03001029 if (event__preprocess_sample(self, session, &al, &data,
1030 symbol_filter) < 0 ||
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -02001031 al.filtered)
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -02001032 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001033
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -02001034 if (al.sym == NULL) {
1035 /*
1036 * As we do lazy loading of symtabs we only will know if the
1037 * specified vmlinux file is invalid when we actually have a
1038 * hit in kernel space and then try to load it. So if we get
1039 * here and there are _no_ symbols in the DSO backing the
1040 * kernel map, bail out.
1041 *
1042 * We may never get here, for instance, if we use -K/
1043 * --hide-kernel-symbols, even if the user specifies an
1044 * invalid --vmlinux ;-)
1045 */
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -03001046 if (al.map == machine->vmlinux_maps[MAP__FUNCTION] &&
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -02001047 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
1048 pr_err("The %s file can't be used\n",
1049 symbol_conf.vmlinux_name);
1050 exit(1);
1051 }
1052
1053 return;
1054 }
1055
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001056 /* let's see, whether we need to install initial sym_filter_entry */
1057 if (sym_filter_entry_sched) {
1058 sym_filter_entry = sym_filter_entry_sched;
1059 sym_filter_entry_sched = NULL;
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -03001060 if (parse_source(sym_filter_entry) < 0) {
1061 struct symbol *sym = sym_entry__symbol(sym_filter_entry);
1062
1063 pr_err("Can't annotate %s", sym->name);
1064 if (sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) {
1065 pr_err(": No vmlinux file was found in the path:\n");
Arnaldo Carvalho de Melo5ad90e42010-05-26 13:26:02 -03001066 machine__fprintf_vmlinux_path(machine, stderr);
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -03001067 } else
1068 pr_err(".\n");
1069 exit(1);
1070 }
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001071 }
1072
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -02001073 syme = symbol__priv(al.sym);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001074 if (!syme->skip) {
1075 syme->count[counter]++;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001076 syme->origin = origin;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001077 record_precise_ip(syme, counter, ip);
1078 pthread_mutex_lock(&active_symbols_lock);
1079 if (list_empty(&syme->node) || !syme->node.next)
1080 __list_insert_active_sym(syme);
1081 pthread_mutex_unlock(&active_symbols_lock);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001082 }
1083}
1084
Ingo Molnar07800602009-04-20 15:00:56 +02001085struct mmap_data {
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001086 int counter;
1087 void *base;
Ingo Molnarf37a2912009-07-01 12:37:06 +02001088 int mask;
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001089 unsigned int prev;
Ingo Molnar07800602009-04-20 15:00:56 +02001090};
1091
1092static unsigned int mmap_read_head(struct mmap_data *md)
1093{
Ingo Molnarcdd6c482009-09-21 12:02:48 +02001094 struct perf_event_mmap_page *pc = md->base;
Ingo Molnar07800602009-04-20 15:00:56 +02001095 int head;
1096
1097 head = pc->data_head;
1098 rmb();
1099
1100 return head;
1101}
1102
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001103static void perf_session__mmap_read_counter(struct perf_session *self,
1104 struct mmap_data *md)
Ingo Molnar07800602009-04-20 15:00:56 +02001105{
1106 unsigned int head = mmap_read_head(md);
1107 unsigned int old = md->prev;
1108 unsigned char *data = md->base + page_size;
1109 int diff;
1110
Ingo Molnar07800602009-04-20 15:00:56 +02001111 /*
1112 * If we're further behind than half the buffer, there's a chance
Ingo Molnar2debbc82009-06-05 14:29:10 +02001113 * the writer will bite our tail and mess up the samples under us.
Ingo Molnar07800602009-04-20 15:00:56 +02001114 *
1115 * If we somehow ended up ahead of the head, we got messed up.
1116 *
1117 * In either case, truncate and restart at head.
1118 */
1119 diff = head - old;
1120 if (diff > md->mask / 2 || diff < 0) {
Mike Galbraithf4f0b412009-10-13 14:57:20 +02001121 fprintf(stderr, "WARNING: failed to keep up with mmap data.\n");
Ingo Molnar07800602009-04-20 15:00:56 +02001122
1123 /*
1124 * head points to a known good entry, start there.
1125 */
1126 old = head;
1127 }
1128
Ingo Molnar07800602009-04-20 15:00:56 +02001129 for (; old != head;) {
Ingo Molnar07800602009-04-20 15:00:56 +02001130 event_t *event = (event_t *)&data[old & md->mask];
1131
1132 event_t event_copy;
1133
Ingo Molnar6f06ccb2009-04-20 15:22:22 +02001134 size_t size = event->header.size;
Ingo Molnar07800602009-04-20 15:00:56 +02001135
1136 /*
1137 * Event straddles the mmap boundary -- header should always
1138 * be inside due to u64 alignment of output.
1139 */
1140 if ((old & md->mask) + size != ((old + size) & md->mask)) {
1141 unsigned int offset = old;
1142 unsigned int len = min(sizeof(*event), size), cpy;
1143 void *dst = &event_copy;
1144
1145 do {
1146 cpy = min(md->mask + 1 - (offset & md->mask), len);
1147 memcpy(dst, &data[offset & md->mask], cpy);
1148 offset += cpy;
1149 dst += cpy;
1150 len -= cpy;
1151 } while (len);
1152
1153 event = &event_copy;
1154 }
1155
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001156 if (event->header.type == PERF_RECORD_SAMPLE)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001157 event__process_sample(event, self, md->counter);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001158 else
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001159 event__process(event, self);
Ingo Molnar07800602009-04-20 15:00:56 +02001160 old += size;
Ingo Molnar07800602009-04-20 15:00:56 +02001161 }
1162
1163 md->prev = old;
1164}
1165
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001166static struct pollfd *event_array;
1167static struct mmap_data *mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
Mike Galbraithc2990a22009-05-24 08:35:49 +02001168
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001169static void perf_session__mmap_read(struct perf_session *self)
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001170{
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001171 int i, counter, thread_index;
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001172
1173 for (i = 0; i < nr_cpus; i++) {
1174 for (counter = 0; counter < nr_counters; counter++)
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001175 for (thread_index = 0;
1176 thread_index < thread_num;
1177 thread_index++) {
1178 perf_session__mmap_read_counter(self,
1179 &mmap_array[i][counter][thread_index]);
1180 }
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001181 }
1182}
1183
Ingo Molnar716c69f2009-06-07 17:31:52 +02001184int nr_poll;
1185int group_fd;
1186
1187static void start_counter(int i, int counter)
Ingo Molnar07800602009-04-20 15:00:56 +02001188{
Ingo Molnarcdd6c482009-09-21 12:02:48 +02001189 struct perf_event_attr *attr;
Mike Galbraith0fdc7e62009-07-21 10:30:36 +02001190 int cpu;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001191 int thread_index;
Ingo Molnar716c69f2009-06-07 17:31:52 +02001192
1193 cpu = profile_cpu;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001194 if (target_tid == -1 && profile_cpu == -1)
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001195 cpu = cpumap[i];
Ingo Molnar716c69f2009-06-07 17:31:52 +02001196
1197 attr = attrs + counter;
1198
1199 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
Mike Galbraith7e4ff9e2009-10-12 07:56:03 +02001200
1201 if (freq) {
1202 attr->sample_type |= PERF_SAMPLE_PERIOD;
1203 attr->freq = 1;
1204 attr->sample_freq = freq;
1205 }
1206
Mike Galbraith0fdc7e62009-07-21 10:30:36 +02001207 attr->inherit = (cpu < 0) && inherit;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001208 attr->mmap = 1;
Ingo Molnar716c69f2009-06-07 17:31:52 +02001209
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001210 for (thread_index = 0; thread_index < thread_num; thread_index++) {
Ingo Molnar716c69f2009-06-07 17:31:52 +02001211try_again:
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001212 fd[i][counter][thread_index] = sys_perf_event_open(attr,
1213 all_tids[thread_index], cpu, group_fd, 0);
Ingo Molnar716c69f2009-06-07 17:31:52 +02001214
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001215 if (fd[i][counter][thread_index] < 0) {
1216 int err = errno;
Ingo Molnar716c69f2009-06-07 17:31:52 +02001217
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001218 if (err == EPERM || err == EACCES)
1219 die("No permission - are you root?\n");
1220 /*
1221 * If it's cycles then fall back to hrtimer
1222 * based cpu-clock-tick sw counter, which
1223 * is always available even if no PMU support:
1224 */
1225 if (attr->type == PERF_TYPE_HARDWARE
1226 && attr->config == PERF_COUNT_HW_CPU_CYCLES) {
Ingo Molnar716c69f2009-06-07 17:31:52 +02001227
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001228 if (verbose)
1229 warning(" ... trying to fall back to cpu-clock-ticks\n");
Ingo Molnar3da297a2009-06-07 17:39:02 +02001230
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001231 attr->type = PERF_TYPE_SOFTWARE;
1232 attr->config = PERF_COUNT_SW_CPU_CLOCK;
1233 goto try_again;
1234 }
1235 printf("\n");
1236 error("perfcounter syscall returned with %d (%s)\n",
1237 fd[i][counter][thread_index], strerror(err));
1238 die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
1239 exit(-1);
Ingo Molnar716c69f2009-06-07 17:31:52 +02001240 }
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001241 assert(fd[i][counter][thread_index] >= 0);
1242 fcntl(fd[i][counter][thread_index], F_SETFL, O_NONBLOCK);
1243
1244 /*
1245 * First counter acts as the group leader:
1246 */
1247 if (group && group_fd == -1)
1248 group_fd = fd[i][counter][thread_index];
1249
1250 event_array[nr_poll].fd = fd[i][counter][thread_index];
1251 event_array[nr_poll].events = POLLIN;
1252 nr_poll++;
1253
1254 mmap_array[i][counter][thread_index].counter = counter;
1255 mmap_array[i][counter][thread_index].prev = 0;
1256 mmap_array[i][counter][thread_index].mask = mmap_pages*page_size - 1;
1257 mmap_array[i][counter][thread_index].base = mmap(NULL, (mmap_pages+1)*page_size,
1258 PROT_READ, MAP_SHARED, fd[i][counter][thread_index], 0);
1259 if (mmap_array[i][counter][thread_index].base == MAP_FAILED)
1260 die("failed to mmap with %d (%s)\n", errno, strerror(errno));
Ingo Molnar716c69f2009-06-07 17:31:52 +02001261 }
Ingo Molnar716c69f2009-06-07 17:31:52 +02001262}
1263
1264static int __cmd_top(void)
1265{
1266 pthread_t thread;
1267 int i, counter;
Ingo Molnar07800602009-04-20 15:00:56 +02001268 int ret;
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001269 /*
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001270 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
1271 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001272 */
Tom Zanussi454c4072010-05-01 01:41:20 -05001273 struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false);
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001274 if (session == NULL)
1275 return -ENOMEM;
Ingo Molnar07800602009-04-20 15:00:56 +02001276
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001277 if (target_tid != -1)
1278 event__synthesize_thread(target_tid, event__process, session);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001279 else
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001280 event__synthesize_threads(event__process, session);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -02001281
Ingo Molnar07800602009-04-20 15:00:56 +02001282 for (i = 0; i < nr_cpus; i++) {
1283 group_fd = -1;
Ingo Molnar716c69f2009-06-07 17:31:52 +02001284 for (counter = 0; counter < nr_counters; counter++)
1285 start_counter(i, counter);
Ingo Molnar07800602009-04-20 15:00:56 +02001286 }
1287
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001288 /* Wait for a minimal set of events before starting the snapshot */
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001289 poll(&event_array[0], nr_poll, 100);
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001290
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001291 perf_session__mmap_read(session);
Frederic Weisbecker2f011902009-06-06 23:10:43 +02001292
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001293 if (pthread_create(&thread, NULL, display_thread, session)) {
Ingo Molnar07800602009-04-20 15:00:56 +02001294 printf("Could not create display thread.\n");
1295 exit(-1);
1296 }
1297
1298 if (realtime_prio) {
1299 struct sched_param param;
1300
1301 param.sched_priority = realtime_prio;
1302 if (sched_setscheduler(0, SCHED_FIFO, &param)) {
1303 printf("Could not set realtime priority.\n");
1304 exit(-1);
1305 }
1306 }
1307
1308 while (1) {
Ingo Molnar2debbc82009-06-05 14:29:10 +02001309 int hits = samples;
Ingo Molnar07800602009-04-20 15:00:56 +02001310
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001311 perf_session__mmap_read(session);
Ingo Molnar07800602009-04-20 15:00:56 +02001312
Ingo Molnar2debbc82009-06-05 14:29:10 +02001313 if (hits == samples)
Ingo Molnar07800602009-04-20 15:00:56 +02001314 ret = poll(event_array, nr_poll, 100);
1315 }
1316
1317 return 0;
1318}
Ingo Molnarb456bae2009-05-26 09:17:18 +02001319
1320static const char * const top_usage[] = {
1321 "perf top [<options>]",
1322 NULL
1323};
1324
Ingo Molnarb456bae2009-05-26 09:17:18 +02001325static const struct option options[] = {
1326 OPT_CALLBACK('e', "event", NULL, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001327 "event selector. use 'perf list' to list available events",
1328 parse_events),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001329 OPT_INTEGER('c', "count", &default_interval,
1330 "event period to sample"),
1331 OPT_INTEGER('p', "pid", &target_pid,
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001332 "profile events on existing process id"),
1333 OPT_INTEGER('t', "tid", &target_tid,
1334 "profile events on existing thread id"),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001335 OPT_BOOLEAN('a', "all-cpus", &system_wide,
1336 "system-wide collection from all CPUs"),
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001337 OPT_STRING('C', "cpu", &cpu_list, "cpu",
1338 "list of cpus to monitor"),
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001339 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1340 "file", "vmlinux pathname"),
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001341 OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
1342 "hide kernel symbols"),
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -03001343 OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001344 OPT_INTEGER('r', "realtime", &realtime_prio,
1345 "collect data with this RT SCHED_FIFO priority"),
Mike Galbraithdb20c002009-05-26 15:25:34 +02001346 OPT_INTEGER('d', "delay", &delay_secs,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001347 "number of seconds to delay between refreshes"),
1348 OPT_BOOLEAN('D', "dump-symtab", &dump_symtab,
1349 "dump the symbol table used for profiling"),
Ingo Molnar6e53cdf2009-06-04 08:53:05 +02001350 OPT_INTEGER('f', "count-filter", &count_filter,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001351 "only display functions with more events than this"),
1352 OPT_BOOLEAN('g', "group", &group,
1353 "put the counters into a counter group"),
Mike Galbraith0fdc7e62009-07-21 10:30:36 +02001354 OPT_BOOLEAN('i', "inherit", &inherit,
1355 "child tasks inherit counters"),
Mike Galbraith923c42c2009-07-22 20:36:03 +02001356 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001357 "symbol to annotate"),
Anton Blanchard1f208ea2009-07-01 09:00:44 +10001358 OPT_BOOLEAN('z', "zero", &zero,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001359 "zero history across updates"),
Ingo Molnar6e53cdf2009-06-04 08:53:05 +02001360 OPT_INTEGER('F', "freq", &freq,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001361 "profile at this frequency"),
Ingo Molnar6e53cdf2009-06-04 08:53:05 +02001362 OPT_INTEGER('E', "entries", &print_entries,
1363 "display this many functions"),
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001364 OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols,
1365 "hide user symbols"),
Ian Munsiec0555642010-04-13 18:37:33 +10001366 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar3da297a2009-06-07 17:39:02 +02001367 "be more verbose (show counter open errors, etc)"),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001368 OPT_END()
1369};
1370
Ingo Molnarf37a2912009-07-01 12:37:06 +02001371int cmd_top(int argc, const char **argv, const char *prefix __used)
Ingo Molnarb456bae2009-05-26 09:17:18 +02001372{
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001373 int counter;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001374 int i,j;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001375
1376 page_size = sysconf(_SC_PAGE_SIZE);
1377
Ingo Molnarb456bae2009-05-26 09:17:18 +02001378 argc = parse_options(argc, argv, options, top_usage, 0);
1379 if (argc)
1380 usage_with_options(top_usage, options);
1381
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001382 if (target_pid != -1) {
1383 target_tid = target_pid;
1384 thread_num = find_all_tid(target_pid, &all_tids);
1385 if (thread_num <= 0) {
1386 fprintf(stderr, "Can't find all threads of pid %d\n",
1387 target_pid);
1388 usage_with_options(top_usage, options);
1389 }
1390 } else {
1391 all_tids=malloc(sizeof(pid_t));
1392 if (!all_tids)
1393 return -ENOMEM;
1394
1395 all_tids[0] = target_tid;
1396 thread_num = 1;
1397 }
1398
1399 for (i = 0; i < MAX_NR_CPUS; i++) {
1400 for (j = 0; j < MAX_COUNTERS; j++) {
1401 fd[i][j] = malloc(sizeof(int)*thread_num);
Zhang, Yanmin5a103172010-03-25 19:59:01 -03001402 mmap_array[i][j] = zalloc(
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001403 sizeof(struct mmap_data)*thread_num);
1404 if (!fd[i][j] || !mmap_array[i][j])
1405 return -ENOMEM;
1406 }
1407 }
1408 event_array = malloc(
1409 sizeof(struct pollfd)*MAX_NR_CPUS*MAX_COUNTERS*thread_num);
1410 if (!event_array)
1411 return -ENOMEM;
1412
Ingo Molnarb456bae2009-05-26 09:17:18 +02001413 /* CPU and PID are mutually exclusive */
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001414 if (target_tid > 0 && cpu_list) {
Ingo Molnarb456bae2009-05-26 09:17:18 +02001415 printf("WARNING: PID switch overriding CPU\n");
1416 sleep(1);
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001417 cpu_list = NULL;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001418 }
1419
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001420 if (!nr_counters)
Ingo Molnarb456bae2009-05-26 09:17:18 +02001421 nr_counters = 1;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001422
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001423 symbol_conf.priv_size = (sizeof(struct sym_entry) +
1424 (nr_counters + 1) * sizeof(unsigned long));
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001425
1426 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -02001427 if (symbol__init() < 0)
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001428 return -1;
Arnaldo Carvalho de Melo5a8e5a32009-11-17 18:38:01 -02001429
Frederic Weisbecker2f335a02009-06-05 19:31:01 +02001430 if (delay_secs < 1)
1431 delay_secs = 1;
1432
Mike Galbraith7e4ff9e2009-10-12 07:56:03 +02001433 /*
1434 * User specified count overrides default frequency.
1435 */
1436 if (default_interval)
1437 freq = 0;
1438 else if (freq) {
1439 default_interval = freq;
1440 } else {
1441 fprintf(stderr, "frequency and count are zero, aborting\n");
1442 exit(EXIT_FAILURE);
1443 }
1444
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001445 /*
1446 * Fill in the ones not specifically initialized via -c:
1447 */
Ingo Molnarb456bae2009-05-26 09:17:18 +02001448 for (counter = 0; counter < nr_counters; counter++) {
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001449 if (attrs[counter].sample_period)
Ingo Molnarb456bae2009-05-26 09:17:18 +02001450 continue;
1451
Ingo Molnara21ca2c2009-06-06 09:58:57 +02001452 attrs[counter].sample_period = default_interval;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001453 }
1454
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001455 if (target_tid != -1)
Ingo Molnarb456bae2009-05-26 09:17:18 +02001456 nr_cpus = 1;
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001457 else
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001458 nr_cpus = read_cpu_map(cpu_list);
1459
1460 if (nr_cpus < 1)
1461 usage_with_options(top_usage, options);
Ingo Molnarb456bae2009-05-26 09:17:18 +02001462
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -02001463 get_term_dimensions(&winsize);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -02001464 if (print_entries == 0) {
Arnaldo Carvalho de Melo13cc5072009-11-17 15:40:54 -02001465 update_print_entries(&winsize);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -02001466 signal(SIGWINCH, sig_winch_handler);
1467 }
1468
Ingo Molnarb456bae2009-05-26 09:17:18 +02001469 return __cmd_top();
1470}