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-rw-r--r--tools/perf/builtin-top.c611
1 files changed, 382 insertions, 229 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e23bc74e734f..1f529321607e 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -20,12 +20,15 @@
20 20
21#include "perf.h" 21#include "perf.h"
22 22
23#include "util/symbol.h"
24#include "util/color.h" 23#include "util/color.h"
24#include "util/session.h"
25#include "util/symbol.h"
26#include "util/thread.h"
25#include "util/util.h" 27#include "util/util.h"
26#include <linux/rbtree.h> 28#include <linux/rbtree.h>
27#include "util/parse-options.h" 29#include "util/parse-options.h"
28#include "util/parse-events.h" 30#include "util/parse-events.h"
31#include "util/cpumap.h"
29 32
30#include "util/debug.h" 33#include "util/debug.h"
31 34
@@ -54,26 +57,30 @@
54 57
55static int fd[MAX_NR_CPUS][MAX_COUNTERS]; 58static int fd[MAX_NR_CPUS][MAX_COUNTERS];
56 59
57static int system_wide = 0; 60static int system_wide = 0;
58 61
59static int default_interval = 100000; 62static int default_interval = 0;
60 63
61static int count_filter = 5; 64static int count_filter = 5;
62static int print_entries = 15; 65static int print_entries;
63 66
64static int target_pid = -1; 67static int target_pid = -1;
65static int inherit = 0; 68static int inherit = 0;
66static int profile_cpu = -1; 69static int profile_cpu = -1;
67static int nr_cpus = 0; 70static int nr_cpus = 0;
68static unsigned int realtime_prio = 0; 71static unsigned int realtime_prio = 0;
69static int group = 0; 72static int group = 0;
70static unsigned int page_size; 73static unsigned int page_size;
71static unsigned int mmap_pages = 16; 74static unsigned int mmap_pages = 16;
72static int freq = 0; 75static int freq = 1000; /* 1 KHz */
73 76
74static int delay_secs = 2; 77static int delay_secs = 2;
75static int zero; 78static int zero = 0;
76static int dump_symtab; 79static int dump_symtab = 0;
80
81static bool hide_kernel_symbols = false;
82static bool hide_user_symbols = false;
83static struct winsize winsize;
77 84
78/* 85/*
79 * Source 86 * Source
@@ -86,87 +93,130 @@ struct source_line {
86 struct source_line *next; 93 struct source_line *next;
87}; 94};
88 95
89static char *sym_filter = NULL; 96static char *sym_filter = NULL;
90struct sym_entry *sym_filter_entry = NULL; 97struct sym_entry *sym_filter_entry = NULL;
91static int sym_pcnt_filter = 5; 98struct sym_entry *sym_filter_entry_sched = NULL;
92static int sym_counter = 0; 99static int sym_pcnt_filter = 5;
93static int display_weighted = -1; 100static int sym_counter = 0;
101static int display_weighted = -1;
94 102
95/* 103/*
96 * Symbols 104 * Symbols
97 */ 105 */
98 106
99static u64 min_ip; 107struct sym_entry_source {
100static u64 max_ip = -1ll; 108 struct source_line *source;
109 struct source_line *lines;
110 struct source_line **lines_tail;
111 pthread_mutex_t lock;
112};
101 113
102struct sym_entry { 114struct sym_entry {
103 struct rb_node rb_node; 115 struct rb_node rb_node;
104 struct list_head node; 116 struct list_head node;
105 unsigned long count[MAX_COUNTERS];
106 unsigned long snap_count; 117 unsigned long snap_count;
107 double weight; 118 double weight;
108 int skip; 119 int skip;
109 struct source_line *source; 120 u16 name_len;
110 struct source_line *lines; 121 u8 origin;
111 struct source_line **lines_tail; 122 struct map *map;
112 pthread_mutex_t source_lock; 123 struct sym_entry_source *src;
124 unsigned long count[0];
113}; 125};
114 126
115/* 127/*
116 * Source functions 128 * Source functions
117 */ 129 */
118 130
131static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
132{
133 return ((void *)self) + symbol_conf.priv_size;
134}
135
136static void get_term_dimensions(struct winsize *ws)
137{
138 char *s = getenv("LINES");
139
140 if (s != NULL) {
141 ws->ws_row = atoi(s);
142 s = getenv("COLUMNS");
143 if (s != NULL) {
144 ws->ws_col = atoi(s);
145 if (ws->ws_row && ws->ws_col)
146 return;
147 }
148 }
149#ifdef TIOCGWINSZ
150 if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
151 ws->ws_row && ws->ws_col)
152 return;
153#endif
154 ws->ws_row = 25;
155 ws->ws_col = 80;
156}
157
158static void update_print_entries(struct winsize *ws)
159{
160 print_entries = ws->ws_row;
161
162 if (print_entries > 9)
163 print_entries -= 9;
164}
165
166static void sig_winch_handler(int sig __used)
167{
168 get_term_dimensions(&winsize);
169 update_print_entries(&winsize);
170}
171
119static void parse_source(struct sym_entry *syme) 172static void parse_source(struct sym_entry *syme)
120{ 173{
121 struct symbol *sym; 174 struct symbol *sym;
122 struct module *module; 175 struct sym_entry_source *source;
123 struct section *section = NULL; 176 struct map *map;
124 FILE *file; 177 FILE *file;
125 char command[PATH_MAX*2]; 178 char command[PATH_MAX*2];
126 const char *path = vmlinux_name; 179 const char *path;
127 u64 start, end, len; 180 u64 len;
128 181
129 if (!syme) 182 if (!syme)
130 return; 183 return;
131 184
132 if (syme->lines) { 185 if (syme->src == NULL) {
133 pthread_mutex_lock(&syme->source_lock); 186 syme->src = zalloc(sizeof(*source));
134 goto out_assign; 187 if (syme->src == NULL)
188 return;
189 pthread_mutex_init(&syme->src->lock, NULL);
135 } 190 }
136 191
137 sym = (struct symbol *)(syme + 1); 192 source = syme->src;
138 module = sym->module;
139
140 if (module)
141 path = module->path;
142 if (!path)
143 return;
144
145 start = sym->obj_start;
146 if (!start)
147 start = sym->start;
148 193
149 if (module) { 194 if (source->lines) {
150 section = module->sections->find_section(module->sections, ".text"); 195 pthread_mutex_lock(&source->lock);
151 if (section) 196 goto out_assign;
152 start -= section->vma;
153 } 197 }
154 198
155 end = start + sym->end - sym->start + 1; 199 sym = sym_entry__symbol(syme);
200 map = syme->map;
201 path = map->dso->long_name;
202
156 len = sym->end - sym->start; 203 len = sym->end - sym->start;
157 204
158 sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", start, end, path); 205 sprintf(command,
206 "objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s",
207 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start),
208 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path);
159 209
160 file = popen(command, "r"); 210 file = popen(command, "r");
161 if (!file) 211 if (!file)
162 return; 212 return;
163 213
164 pthread_mutex_lock(&syme->source_lock); 214 pthread_mutex_lock(&source->lock);
165 syme->lines_tail = &syme->lines; 215 source->lines_tail = &source->lines;
166 while (!feof(file)) { 216 while (!feof(file)) {
167 struct source_line *src; 217 struct source_line *src;
168 size_t dummy = 0; 218 size_t dummy = 0;
169 char *c; 219 char *c, *sep;
170 220
171 src = malloc(sizeof(struct source_line)); 221 src = malloc(sizeof(struct source_line));
172 assert(src != NULL); 222 assert(src != NULL);
@@ -182,24 +232,19 @@ static void parse_source(struct sym_entry *syme)
182 *c = 0; 232 *c = 0;
183 233
184 src->next = NULL; 234 src->next = NULL;
185 *syme->lines_tail = src; 235 *source->lines_tail = src;
186 syme->lines_tail = &src->next; 236 source->lines_tail = &src->next;
187 237
188 if (strlen(src->line)>8 && src->line[8] == ':') { 238 src->eip = strtoull(src->line, &sep, 16);
189 src->eip = strtoull(src->line, NULL, 16); 239 if (*sep == ':')
190 if (section) 240 src->eip = map__objdump_2ip(map, src->eip);
191 src->eip += section->vma; 241 else /* this line has no ip info (e.g. source line) */
192 } 242 src->eip = 0;
193 if (strlen(src->line)>8 && src->line[16] == ':') {
194 src->eip = strtoull(src->line, NULL, 16);
195 if (section)
196 src->eip += section->vma;
197 }
198 } 243 }
199 pclose(file); 244 pclose(file);
200out_assign: 245out_assign:
201 sym_filter_entry = syme; 246 sym_filter_entry = syme;
202 pthread_mutex_unlock(&syme->source_lock); 247 pthread_mutex_unlock(&source->lock);
203} 248}
204 249
205static void __zero_source_counters(struct sym_entry *syme) 250static void __zero_source_counters(struct sym_entry *syme)
@@ -207,7 +252,7 @@ static void __zero_source_counters(struct sym_entry *syme)
207 int i; 252 int i;
208 struct source_line *line; 253 struct source_line *line;
209 254
210 line = syme->lines; 255 line = syme->src->lines;
211 while (line) { 256 while (line) {
212 for (i = 0; i < nr_counters; i++) 257 for (i = 0; i < nr_counters; i++)
213 line->count[i] = 0; 258 line->count[i] = 0;
@@ -222,13 +267,16 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
222 if (syme != sym_filter_entry) 267 if (syme != sym_filter_entry)
223 return; 268 return;
224 269
225 if (pthread_mutex_trylock(&syme->source_lock)) 270 if (pthread_mutex_trylock(&syme->src->lock))
226 return; 271 return;
227 272
228 if (!syme->source) 273 if (syme->src == NULL || syme->src->source == NULL)
229 goto out_unlock; 274 goto out_unlock;
230 275
231 for (line = syme->lines; line; line = line->next) { 276 for (line = syme->src->lines; line; line = line->next) {
277 /* skip lines without IP info */
278 if (line->eip == 0)
279 continue;
232 if (line->eip == ip) { 280 if (line->eip == ip) {
233 line->count[counter]++; 281 line->count[counter]++;
234 break; 282 break;
@@ -237,32 +285,28 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
237 break; 285 break;
238 } 286 }
239out_unlock: 287out_unlock:
240 pthread_mutex_unlock(&syme->source_lock); 288 pthread_mutex_unlock(&syme->src->lock);
241} 289}
242 290
291#define PATTERN_LEN (BITS_PER_LONG / 4 + 2)
292
243static void lookup_sym_source(struct sym_entry *syme) 293static void lookup_sym_source(struct sym_entry *syme)
244{ 294{
245 struct symbol *symbol = (struct symbol *)(syme + 1); 295 struct symbol *symbol = sym_entry__symbol(syme);
246 struct source_line *line; 296 struct source_line *line;
247 char pattern[PATH_MAX]; 297 char pattern[PATTERN_LEN + 1];
248 char *idx;
249
250 sprintf(pattern, "<%s>:", symbol->name);
251 298
252 if (symbol->module) { 299 sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4,
253 idx = strstr(pattern, "\t"); 300 map__rip_2objdump(syme->map, symbol->start));
254 if (idx)
255 *idx = 0;
256 }
257 301
258 pthread_mutex_lock(&syme->source_lock); 302 pthread_mutex_lock(&syme->src->lock);
259 for (line = syme->lines; line; line = line->next) { 303 for (line = syme->src->lines; line; line = line->next) {
260 if (strstr(line->line, pattern)) { 304 if (memcmp(line->line, pattern, PATTERN_LEN) == 0) {
261 syme->source = line; 305 syme->src->source = line;
262 break; 306 break;
263 } 307 }
264 } 308 }
265 pthread_mutex_unlock(&syme->source_lock); 309 pthread_mutex_unlock(&syme->src->lock);
266} 310}
267 311
268static void show_lines(struct source_line *queue, int count, int total) 312static void show_lines(struct source_line *queue, int count, int total)
@@ -292,24 +336,24 @@ static void show_details(struct sym_entry *syme)
292 if (!syme) 336 if (!syme)
293 return; 337 return;
294 338
295 if (!syme->source) 339 if (!syme->src->source)
296 lookup_sym_source(syme); 340 lookup_sym_source(syme);
297 341
298 if (!syme->source) 342 if (!syme->src->source)
299 return; 343 return;
300 344
301 symbol = (struct symbol *)(syme + 1); 345 symbol = sym_entry__symbol(syme);
302 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); 346 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
303 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); 347 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
304 348
305 pthread_mutex_lock(&syme->source_lock); 349 pthread_mutex_lock(&syme->src->lock);
306 line = syme->source; 350 line = syme->src->source;
307 while (line) { 351 while (line) {
308 total += line->count[sym_counter]; 352 total += line->count[sym_counter];
309 line = line->next; 353 line = line->next;
310 } 354 }
311 355
312 line = syme->source; 356 line = syme->src->source;
313 while (line) { 357 while (line) {
314 float pcnt = 0.0; 358 float pcnt = 0.0;
315 359
@@ -334,13 +378,13 @@ static void show_details(struct sym_entry *syme)
334 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; 378 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
335 line = line->next; 379 line = line->next;
336 } 380 }
337 pthread_mutex_unlock(&syme->source_lock); 381 pthread_mutex_unlock(&syme->src->lock);
338 if (more) 382 if (more)
339 printf("%d lines not displayed, maybe increase display entries [e]\n", more); 383 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
340} 384}
341 385
342/* 386/*
343 * Symbols will be added here in record_ip and will get out 387 * Symbols will be added here in event__process_sample and will get out
344 * after decayed. 388 * after decayed.
345 */ 389 */
346static LIST_HEAD(active_symbols); 390static LIST_HEAD(active_symbols);
@@ -411,6 +455,8 @@ static void print_sym_table(void)
411 struct sym_entry *syme, *n; 455 struct sym_entry *syme, *n;
412 struct rb_root tmp = RB_ROOT; 456 struct rb_root tmp = RB_ROOT;
413 struct rb_node *nd; 457 struct rb_node *nd;
458 int sym_width = 0, dso_width = 0, dso_short_width = 0;
459 const int win_width = winsize.ws_col - 1;
414 460
415 samples = userspace_samples = 0; 461 samples = userspace_samples = 0;
416 462
@@ -422,6 +468,14 @@ static void print_sym_table(void)
422 list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 468 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
423 syme->snap_count = syme->count[snap]; 469 syme->snap_count = syme->count[snap];
424 if (syme->snap_count != 0) { 470 if (syme->snap_count != 0) {
471
472 if ((hide_user_symbols &&
473 syme->origin == PERF_RECORD_MISC_USER) ||
474 (hide_kernel_symbols &&
475 syme->origin == PERF_RECORD_MISC_KERNEL)) {
476 list_remove_active_sym(syme);
477 continue;
478 }
425 syme->weight = sym_weight(syme); 479 syme->weight = sym_weight(syme);
426 rb_insert_active_sym(&tmp, syme); 480 rb_insert_active_sym(&tmp, syme);
427 sum_ksamples += syme->snap_count; 481 sum_ksamples += syme->snap_count;
@@ -434,8 +488,7 @@ static void print_sym_table(void)
434 488
435 puts(CONSOLE_CLEAR); 489 puts(CONSOLE_CLEAR);
436 490
437 printf( 491 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
438"------------------------------------------------------------------------------\n");
439 printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", 492 printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [",
440 samples_per_sec, 493 samples_per_sec,
441 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); 494 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
@@ -473,33 +526,62 @@ static void print_sym_table(void)
473 printf(", %d CPUs)\n", nr_cpus); 526 printf(", %d CPUs)\n", nr_cpus);
474 } 527 }
475 528
476 printf("------------------------------------------------------------------------------\n\n"); 529 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
477 530
478 if (sym_filter_entry) { 531 if (sym_filter_entry) {
479 show_details(sym_filter_entry); 532 show_details(sym_filter_entry);
480 return; 533 return;
481 } 534 }
482 535
536 /*
537 * Find the longest symbol name that will be displayed
538 */
539 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
540 syme = rb_entry(nd, struct sym_entry, rb_node);
541 if (++printed > print_entries ||
542 (int)syme->snap_count < count_filter)
543 continue;
544
545 if (syme->map->dso->long_name_len > dso_width)
546 dso_width = syme->map->dso->long_name_len;
547
548 if (syme->map->dso->short_name_len > dso_short_width)
549 dso_short_width = syme->map->dso->short_name_len;
550
551 if (syme->name_len > sym_width)
552 sym_width = syme->name_len;
553 }
554
555 printed = 0;
556
557 if (sym_width + dso_width > winsize.ws_col - 29) {
558 dso_width = dso_short_width;
559 if (sym_width + dso_width > winsize.ws_col - 29)
560 sym_width = winsize.ws_col - dso_width - 29;
561 }
562 putchar('\n');
483 if (nr_counters == 1) 563 if (nr_counters == 1)
484 printf(" samples pcnt"); 564 printf(" samples pcnt");
485 else 565 else
486 printf(" weight samples pcnt"); 566 printf(" weight samples pcnt");
487 567
488 if (verbose) 568 if (verbose)
489 printf(" RIP "); 569 printf(" RIP ");
490 printf(" kernel function\n"); 570 printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
491 printf(" %s _______ _____", 571 printf(" %s _______ _____",
492 nr_counters == 1 ? " " : "______"); 572 nr_counters == 1 ? " " : "______");
493 if (verbose) 573 if (verbose)
494 printf(" ________________"); 574 printf(" ________________");
495 printf(" _______________\n\n"); 575 printf(" %-*.*s", sym_width, sym_width, graph_line);
576 printf(" %-*.*s", dso_width, dso_width, graph_line);
577 puts("\n");
496 578
497 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 579 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
498 struct symbol *sym; 580 struct symbol *sym;
499 double pcnt; 581 double pcnt;
500 582
501 syme = rb_entry(nd, struct sym_entry, rb_node); 583 syme = rb_entry(nd, struct sym_entry, rb_node);
502 sym = (struct symbol *)(syme + 1); 584 sym = sym_entry__symbol(syme);
503 585
504 if (++printed > print_entries || (int)syme->snap_count < count_filter) 586 if (++printed > print_entries || (int)syme->snap_count < count_filter)
505 continue; 587 continue;
@@ -508,17 +590,18 @@ static void print_sym_table(void)
508 sum_ksamples)); 590 sum_ksamples));
509 591
510 if (nr_counters == 1 || !display_weighted) 592 if (nr_counters == 1 || !display_weighted)
511 printf("%20.2f - ", syme->weight); 593 printf("%20.2f ", syme->weight);
512 else 594 else
513 printf("%9.1f %10ld - ", syme->weight, syme->snap_count); 595 printf("%9.1f %10ld ", syme->weight, syme->snap_count);
514 596
515 percent_color_fprintf(stdout, "%4.1f%%", pcnt); 597 percent_color_fprintf(stdout, "%4.1f%%", pcnt);
516 if (verbose) 598 if (verbose)
517 printf(" - %016llx", sym->start); 599 printf(" %016llx", sym->start);
518 printf(" : %s", sym->name); 600 printf(" %-*.*s", sym_width, sym_width, sym->name);
519 if (sym->module) 601 printf(" %-*.*s\n", dso_width, dso_width,
520 printf("\t[%s]", sym->module->name); 602 dso_width >= syme->map->dso->long_name_len ?
521 printf("\n"); 603 syme->map->dso->long_name :
604 syme->map->dso->short_name);
522 } 605 }
523} 606}
524 607
@@ -565,10 +648,10 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
565 648
566 /* zero counters of active symbol */ 649 /* zero counters of active symbol */
567 if (syme) { 650 if (syme) {
568 pthread_mutex_lock(&syme->source_lock); 651 pthread_mutex_lock(&syme->src->lock);
569 __zero_source_counters(syme); 652 __zero_source_counters(syme);
570 *target = NULL; 653 *target = NULL;
571 pthread_mutex_unlock(&syme->source_lock); 654 pthread_mutex_unlock(&syme->src->lock);
572 } 655 }
573 656
574 fprintf(stdout, "\n%s: ", msg); 657 fprintf(stdout, "\n%s: ", msg);
@@ -584,7 +667,7 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
584 pthread_mutex_unlock(&active_symbols_lock); 667 pthread_mutex_unlock(&active_symbols_lock);
585 668
586 list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 669 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
587 struct symbol *sym = (struct symbol *)(syme + 1); 670 struct symbol *sym = sym_entry__symbol(syme);
588 671
589 if (!strcmp(buf, sym->name)) { 672 if (!strcmp(buf, sym->name)) {
590 found = syme; 673 found = syme;
@@ -593,7 +676,7 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
593 } 676 }
594 677
595 if (!found) { 678 if (!found) {
596 fprintf(stderr, "Sorry, %s is not active.\n", sym_filter); 679 fprintf(stderr, "Sorry, %s is not active.\n", buf);
597 sleep(1); 680 sleep(1);
598 return; 681 return;
599 } else 682 } else
@@ -608,7 +691,7 @@ static void print_mapped_keys(void)
608 char *name = NULL; 691 char *name = NULL;
609 692
610 if (sym_filter_entry) { 693 if (sym_filter_entry) {
611 struct symbol *sym = (struct symbol *)(sym_filter_entry+1); 694 struct symbol *sym = sym_entry__symbol(sym_filter_entry);
612 name = sym->name; 695 name = sym->name;
613 } 696 }
614 697
@@ -621,15 +704,19 @@ static void print_mapped_keys(void)
621 704
622 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); 705 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
623 706
624 if (vmlinux_name) { 707 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
625 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); 708 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
626 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); 709 fprintf(stdout, "\t[S] stop annotation.\n");
627 fprintf(stdout, "\t[S] stop annotation.\n");
628 }
629 710
630 if (nr_counters > 1) 711 if (nr_counters > 1)
631 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); 712 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
632 713
714 fprintf(stdout,
715 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
716 hide_kernel_symbols ? "yes" : "no");
717 fprintf(stdout,
718 "\t[U] hide user symbols. \t(%s)\n",
719 hide_user_symbols ? "yes" : "no");
633 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); 720 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
634 fprintf(stdout, "\t[qQ] quit.\n"); 721 fprintf(stdout, "\t[qQ] quit.\n");
635} 722}
@@ -643,14 +730,15 @@ static int key_mapped(int c)
643 case 'z': 730 case 'z':
644 case 'q': 731 case 'q':
645 case 'Q': 732 case 'Q':
733 case 'K':
734 case 'U':
735 case 'F':
736 case 's':
737 case 'S':
646 return 1; 738 return 1;
647 case 'E': 739 case 'E':
648 case 'w': 740 case 'w':
649 return nr_counters > 1 ? 1 : 0; 741 return nr_counters > 1 ? 1 : 0;
650 case 'F':
651 case 's':
652 case 'S':
653 return vmlinux_name ? 1 : 0;
654 default: 742 default:
655 break; 743 break;
656 } 744 }
@@ -691,6 +779,11 @@ static void handle_keypress(int c)
691 break; 779 break;
692 case 'e': 780 case 'e':
693 prompt_integer(&print_entries, "Enter display entries (lines)"); 781 prompt_integer(&print_entries, "Enter display entries (lines)");
782 if (print_entries == 0) {
783 sig_winch_handler(SIGWINCH);
784 signal(SIGWINCH, sig_winch_handler);
785 } else
786 signal(SIGWINCH, SIG_DFL);
694 break; 787 break;
695 case 'E': 788 case 'E':
696 if (nr_counters > 1) { 789 if (nr_counters > 1) {
@@ -715,9 +808,14 @@ static void handle_keypress(int c)
715 case 'F': 808 case 'F':
716 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); 809 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
717 break; 810 break;
811 case 'K':
812 hide_kernel_symbols = !hide_kernel_symbols;
813 break;
718 case 'q': 814 case 'q':
719 case 'Q': 815 case 'Q':
720 printf("exiting.\n"); 816 printf("exiting.\n");
817 if (dump_symtab)
818 dsos__fprintf(stderr);
721 exit(0); 819 exit(0);
722 case 's': 820 case 's':
723 prompt_symbol(&sym_filter_entry, "Enter details symbol"); 821 prompt_symbol(&sym_filter_entry, "Enter details symbol");
@@ -728,12 +826,15 @@ static void handle_keypress(int c)
728 else { 826 else {
729 struct sym_entry *syme = sym_filter_entry; 827 struct sym_entry *syme = sym_filter_entry;
730 828
731 pthread_mutex_lock(&syme->source_lock); 829 pthread_mutex_lock(&syme->src->lock);
732 sym_filter_entry = NULL; 830 sym_filter_entry = NULL;
733 __zero_source_counters(syme); 831 __zero_source_counters(syme);
734 pthread_mutex_unlock(&syme->source_lock); 832 pthread_mutex_unlock(&syme->src->lock);
735 } 833 }
736 break; 834 break;
835 case 'U':
836 hide_user_symbols = !hide_user_symbols;
837 break;
737 case 'w': 838 case 'w':
738 display_weighted = ~display_weighted; 839 display_weighted = ~display_weighted;
739 break; 840 break;
@@ -790,7 +891,7 @@ static const char *skip_symbols[] = {
790 NULL 891 NULL
791}; 892};
792 893
793static int symbol_filter(struct dso *self, struct symbol *sym) 894static int symbol_filter(struct map *map, struct symbol *sym)
794{ 895{
795 struct sym_entry *syme; 896 struct sym_entry *syme;
796 const char *name = sym->name; 897 const char *name = sym->name;
@@ -812,10 +913,15 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
812 strstr(name, "_text_end")) 913 strstr(name, "_text_end"))
813 return 1; 914 return 1;
814 915
815 syme = dso__sym_priv(self, sym); 916 syme = symbol__priv(sym);
816 pthread_mutex_init(&syme->source_lock, NULL); 917 syme->map = map;
817 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) 918 syme->src = NULL;
818 sym_filter_entry = syme; 919
920 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
921 /* schedule initial sym_filter_entry setup */
922 sym_filter_entry_sched = syme;
923 sym_filter = NULL;
924 }
819 925
820 for (i = 0; skip_symbols[i]; i++) { 926 for (i = 0; skip_symbols[i]; i++) {
821 if (!strcmp(skip_symbols[i], name)) { 927 if (!strcmp(skip_symbols[i], name)) {
@@ -824,75 +930,99 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
824 } 930 }
825 } 931 }
826 932
933 if (!syme->skip)
934 syme->name_len = strlen(sym->name);
935
827 return 0; 936 return 0;
828} 937}
829 938
830static int parse_symbols(void) 939static void event__process_sample(const event_t *self,
940 struct perf_session *session, int counter)
831{ 941{
832 struct rb_node *node; 942 u64 ip = self->ip.ip;
833 struct symbol *sym; 943 struct sym_entry *syme;
834 int use_modules = vmlinux_name ? 1 : 0; 944 struct addr_location al;
835 945 u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
836 kernel_dso = dso__new("[kernel]", sizeof(struct sym_entry));
837 if (kernel_dso == NULL)
838 return -1;
839
840 if (dso__load_kernel(kernel_dso, vmlinux_name, symbol_filter, verbose, use_modules) <= 0)
841 goto out_delete_dso;
842 946
843 node = rb_first(&kernel_dso->syms); 947 ++samples;
844 sym = rb_entry(node, struct symbol, rb_node);
845 min_ip = sym->start;
846 948
847 node = rb_last(&kernel_dso->syms); 949 switch (origin) {
848 sym = rb_entry(node, struct symbol, rb_node); 950 case PERF_RECORD_MISC_USER:
849 max_ip = sym->end; 951 ++userspace_samples;
952 if (hide_user_symbols)
953 return;
954 break;
955 case PERF_RECORD_MISC_KERNEL:
956 if (hide_kernel_symbols)
957 return;
958 break;
959 default:
960 return;
961 }
850 962
851 if (dump_symtab) 963 if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 ||
852 dso__fprintf(kernel_dso, stderr); 964 al.filtered)
965 return;
853 966
854 return 0; 967 if (al.sym == NULL) {
968 /*
969 * As we do lazy loading of symtabs we only will know if the
970 * specified vmlinux file is invalid when we actually have a
971 * hit in kernel space and then try to load it. So if we get
972 * here and there are _no_ symbols in the DSO backing the
973 * kernel map, bail out.
974 *
975 * We may never get here, for instance, if we use -K/
976 * --hide-kernel-symbols, even if the user specifies an
977 * invalid --vmlinux ;-)
978 */
979 if (al.map == session->vmlinux_maps[MAP__FUNCTION] &&
980 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
981 pr_err("The %s file can't be used\n",
982 symbol_conf.vmlinux_name);
983 exit(1);
984 }
855 985
856out_delete_dso: 986 return;
857 dso__delete(kernel_dso); 987 }
858 kernel_dso = NULL;
859 return -1;
860}
861 988
862/* 989 /* let's see, whether we need to install initial sym_filter_entry */
863 * Binary search in the histogram table and record the hit: 990 if (sym_filter_entry_sched) {
864 */ 991 sym_filter_entry = sym_filter_entry_sched;
865static void record_ip(u64 ip, int counter) 992 sym_filter_entry_sched = NULL;
866{ 993 parse_source(sym_filter_entry);
867 struct symbol *sym = dso__find_symbol(kernel_dso, ip);
868
869 if (sym != NULL) {
870 struct sym_entry *syme = dso__sym_priv(kernel_dso, sym);
871
872 if (!syme->skip) {
873 syme->count[counter]++;
874 record_precise_ip(syme, counter, ip);
875 pthread_mutex_lock(&active_symbols_lock);
876 if (list_empty(&syme->node) || !syme->node.next)
877 __list_insert_active_sym(syme);
878 pthread_mutex_unlock(&active_symbols_lock);
879 return;
880 }
881 } 994 }
882 995
883 samples--; 996 syme = symbol__priv(al.sym);
997 if (!syme->skip) {
998 syme->count[counter]++;
999 syme->origin = origin;
1000 record_precise_ip(syme, counter, ip);
1001 pthread_mutex_lock(&active_symbols_lock);
1002 if (list_empty(&syme->node) || !syme->node.next)
1003 __list_insert_active_sym(syme);
1004 pthread_mutex_unlock(&active_symbols_lock);
1005 }
884} 1006}
885 1007
886static void process_event(u64 ip, int counter, int user) 1008static int event__process(event_t *event, struct perf_session *session)
887{ 1009{
888 samples++; 1010 switch (event->header.type) {
889 1011 case PERF_RECORD_COMM:
890 if (user) { 1012 event__process_comm(event, session);
891 userspace_samples++; 1013 break;
892 return; 1014 case PERF_RECORD_MMAP:
1015 event__process_mmap(event, session);
1016 break;
1017 case PERF_RECORD_FORK:
1018 case PERF_RECORD_EXIT:
1019 event__process_task(event, session);
1020 break;
1021 default:
1022 break;
893 } 1023 }
894 1024
895 record_ip(ip, counter); 1025 return 0;
896} 1026}
897 1027
898struct mmap_data { 1028struct mmap_data {
@@ -913,17 +1043,14 @@ static unsigned int mmap_read_head(struct mmap_data *md)
913 return head; 1043 return head;
914} 1044}
915 1045
916struct timeval last_read, this_read; 1046static void perf_session__mmap_read_counter(struct perf_session *self,
917 1047 struct mmap_data *md)
918static void mmap_read_counter(struct mmap_data *md)
919{ 1048{
920 unsigned int head = mmap_read_head(md); 1049 unsigned int head = mmap_read_head(md);
921 unsigned int old = md->prev; 1050 unsigned int old = md->prev;
922 unsigned char *data = md->base + page_size; 1051 unsigned char *data = md->base + page_size;
923 int diff; 1052 int diff;
924 1053
925 gettimeofday(&this_read, NULL);
926
927 /* 1054 /*
928 * If we're further behind than half the buffer, there's a chance 1055 * If we're further behind than half the buffer, there's a chance
929 * the writer will bite our tail and mess up the samples under us. 1056 * the writer will bite our tail and mess up the samples under us.
@@ -934,14 +1061,7 @@ static void mmap_read_counter(struct mmap_data *md)
934 */ 1061 */
935 diff = head - old; 1062 diff = head - old;
936 if (diff > md->mask / 2 || diff < 0) { 1063 if (diff > md->mask / 2 || diff < 0) {
937 struct timeval iv; 1064 fprintf(stderr, "WARNING: failed to keep up with mmap data.\n");
938 unsigned long msecs;
939
940 timersub(&this_read, &last_read, &iv);
941 msecs = iv.tv_sec*1000 + iv.tv_usec/1000;
942
943 fprintf(stderr, "WARNING: failed to keep up with mmap data."
944 " Last read %lu msecs ago.\n", msecs);
945 1065
946 /* 1066 /*
947 * head points to a known good entry, start there. 1067 * head points to a known good entry, start there.
@@ -949,8 +1069,6 @@ static void mmap_read_counter(struct mmap_data *md)
949 old = head; 1069 old = head;
950 } 1070 }
951 1071
952 last_read = this_read;
953
954 for (; old != head;) { 1072 for (; old != head;) {
955 event_t *event = (event_t *)&data[old & md->mask]; 1073 event_t *event = (event_t *)&data[old & md->mask];
956 1074
@@ -978,13 +1096,11 @@ static void mmap_read_counter(struct mmap_data *md)
978 event = &event_copy; 1096 event = &event_copy;
979 } 1097 }
980 1098
1099 if (event->header.type == PERF_RECORD_SAMPLE)
1100 event__process_sample(event, self, md->counter);
1101 else
1102 event__process(event, self);
981 old += size; 1103 old += size;
982
983 if (event->header.type == PERF_RECORD_SAMPLE) {
984 int user =
985 (event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK) == PERF_RECORD_MISC_USER;
986 process_event(event->ip.ip, md->counter, user);
987 }
988 } 1104 }
989 1105
990 md->prev = old; 1106 md->prev = old;
@@ -993,13 +1109,13 @@ static void mmap_read_counter(struct mmap_data *md)
993static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; 1109static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
994static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; 1110static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
995 1111
996static void mmap_read(void) 1112static void perf_session__mmap_read(struct perf_session *self)
997{ 1113{
998 int i, counter; 1114 int i, counter;
999 1115
1000 for (i = 0; i < nr_cpus; i++) { 1116 for (i = 0; i < nr_cpus; i++) {
1001 for (counter = 0; counter < nr_counters; counter++) 1117 for (counter = 0; counter < nr_counters; counter++)
1002 mmap_read_counter(&mmap_array[i][counter]); 1118 perf_session__mmap_read_counter(self, &mmap_array[i][counter]);
1003 } 1119 }
1004} 1120}
1005 1121
@@ -1013,13 +1129,20 @@ static void start_counter(int i, int counter)
1013 1129
1014 cpu = profile_cpu; 1130 cpu = profile_cpu;
1015 if (target_pid == -1 && profile_cpu == -1) 1131 if (target_pid == -1 && profile_cpu == -1)
1016 cpu = i; 1132 cpu = cpumap[i];
1017 1133
1018 attr = attrs + counter; 1134 attr = attrs + counter;
1019 1135
1020 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; 1136 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
1021 attr->freq = freq; 1137
1138 if (freq) {
1139 attr->sample_type |= PERF_SAMPLE_PERIOD;
1140 attr->freq = 1;
1141 attr->sample_freq = freq;
1142 }
1143
1022 attr->inherit = (cpu < 0) && inherit; 1144 attr->inherit = (cpu < 0) && inherit;
1145 attr->mmap = 1;
1023 1146
1024try_again: 1147try_again:
1025 fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); 1148 fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0);
@@ -1077,6 +1200,18 @@ static int __cmd_top(void)
1077 pthread_t thread; 1200 pthread_t thread;
1078 int i, counter; 1201 int i, counter;
1079 int ret; 1202 int ret;
1203 /*
1204 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
1205 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
1206 */
1207 struct perf_session *session = perf_session__new(NULL, O_WRONLY, false);
1208 if (session == NULL)
1209 return -ENOMEM;
1210
1211 if (target_pid != -1)
1212 event__synthesize_thread(target_pid, event__process, session);
1213 else
1214 event__synthesize_threads(event__process, session);
1080 1215
1081 for (i = 0; i < nr_cpus; i++) { 1216 for (i = 0; i < nr_cpus; i++) {
1082 group_fd = -1; 1217 group_fd = -1;
@@ -1087,7 +1222,7 @@ static int __cmd_top(void)
1087 /* Wait for a minimal set of events before starting the snapshot */ 1222 /* Wait for a minimal set of events before starting the snapshot */
1088 poll(event_array, nr_poll, 100); 1223 poll(event_array, nr_poll, 100);
1089 1224
1090 mmap_read(); 1225 perf_session__mmap_read(session);
1091 1226
1092 if (pthread_create(&thread, NULL, display_thread, NULL)) { 1227 if (pthread_create(&thread, NULL, display_thread, NULL)) {
1093 printf("Could not create display thread.\n"); 1228 printf("Could not create display thread.\n");
@@ -1107,7 +1242,7 @@ static int __cmd_top(void)
1107 while (1) { 1242 while (1) {
1108 int hits = samples; 1243 int hits = samples;
1109 1244
1110 mmap_read(); 1245 perf_session__mmap_read(session);
1111 1246
1112 if (hits == samples) 1247 if (hits == samples)
1113 ret = poll(event_array, nr_poll, 100); 1248 ret = poll(event_array, nr_poll, 100);
@@ -1133,7 +1268,10 @@ static const struct option options[] = {
1133 "system-wide collection from all CPUs"), 1268 "system-wide collection from all CPUs"),
1134 OPT_INTEGER('C', "CPU", &profile_cpu, 1269 OPT_INTEGER('C', "CPU", &profile_cpu,
1135 "CPU to profile on"), 1270 "CPU to profile on"),
1136 OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"), 1271 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1272 "file", "vmlinux pathname"),
1273 OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
1274 "hide kernel symbols"),
1137 OPT_INTEGER('m', "mmap-pages", &mmap_pages, 1275 OPT_INTEGER('m', "mmap-pages", &mmap_pages,
1138 "number of mmap data pages"), 1276 "number of mmap data pages"),
1139 OPT_INTEGER('r', "realtime", &realtime_prio, 1277 OPT_INTEGER('r', "realtime", &realtime_prio,
@@ -1149,13 +1287,15 @@ static const struct option options[] = {
1149 OPT_BOOLEAN('i', "inherit", &inherit, 1287 OPT_BOOLEAN('i', "inherit", &inherit,
1150 "child tasks inherit counters"), 1288 "child tasks inherit counters"),
1151 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", 1289 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
1152 "symbol to annotate - requires -k option"), 1290 "symbol to annotate"),
1153 OPT_BOOLEAN('z', "zero", &zero, 1291 OPT_BOOLEAN('z', "zero", &zero,
1154 "zero history across updates"), 1292 "zero history across updates"),
1155 OPT_INTEGER('F', "freq", &freq, 1293 OPT_INTEGER('F', "freq", &freq,
1156 "profile at this frequency"), 1294 "profile at this frequency"),
1157 OPT_INTEGER('E', "entries", &print_entries, 1295 OPT_INTEGER('E', "entries", &print_entries,
1158 "display this many functions"), 1296 "display this many functions"),
1297 OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols,
1298 "hide user symbols"),
1159 OPT_BOOLEAN('v', "verbose", &verbose, 1299 OPT_BOOLEAN('v', "verbose", &verbose,
1160 "be more verbose (show counter open errors, etc)"), 1300 "be more verbose (show counter open errors, etc)"),
1161 OPT_END() 1301 OPT_END()
@@ -1165,19 +1305,12 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1165{ 1305{
1166 int counter; 1306 int counter;
1167 1307
1168 symbol__init();
1169
1170 page_size = sysconf(_SC_PAGE_SIZE); 1308 page_size = sysconf(_SC_PAGE_SIZE);
1171 1309
1172 argc = parse_options(argc, argv, options, top_usage, 0); 1310 argc = parse_options(argc, argv, options, top_usage, 0);
1173 if (argc) 1311 if (argc)
1174 usage_with_options(top_usage, options); 1312 usage_with_options(top_usage, options);
1175 1313
1176 if (freq) {
1177 default_interval = freq;
1178 freq = 1;
1179 }
1180
1181 /* CPU and PID are mutually exclusive */ 1314 /* CPU and PID are mutually exclusive */
1182 if (target_pid != -1 && profile_cpu != -1) { 1315 if (target_pid != -1 && profile_cpu != -1) {
1183 printf("WARNING: PID switch overriding CPU\n"); 1316 printf("WARNING: PID switch overriding CPU\n");
@@ -1188,11 +1321,27 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1188 if (!nr_counters) 1321 if (!nr_counters)
1189 nr_counters = 1; 1322 nr_counters = 1;
1190 1323
1324 symbol_conf.priv_size = (sizeof(struct sym_entry) +
1325 (nr_counters + 1) * sizeof(unsigned long));
1326
1327 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1328 if (symbol__init() < 0)
1329 return -1;
1330
1191 if (delay_secs < 1) 1331 if (delay_secs < 1)
1192 delay_secs = 1; 1332 delay_secs = 1;
1193 1333
1194 parse_symbols(); 1334 /*
1195 parse_source(sym_filter_entry); 1335 * User specified count overrides default frequency.
1336 */
1337 if (default_interval)
1338 freq = 0;
1339 else if (freq) {
1340 default_interval = freq;
1341 } else {
1342 fprintf(stderr, "frequency and count are zero, aborting\n");
1343 exit(EXIT_FAILURE);
1344 }
1196 1345
1197 /* 1346 /*
1198 * Fill in the ones not specifically initialized via -c: 1347 * Fill in the ones not specifically initialized via -c:
@@ -1204,12 +1353,16 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1204 attrs[counter].sample_period = default_interval; 1353 attrs[counter].sample_period = default_interval;
1205 } 1354 }
1206 1355
1207 nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
1208 assert(nr_cpus <= MAX_NR_CPUS);
1209 assert(nr_cpus >= 0);
1210
1211 if (target_pid != -1 || profile_cpu != -1) 1356 if (target_pid != -1 || profile_cpu != -1)
1212 nr_cpus = 1; 1357 nr_cpus = 1;
1358 else
1359 nr_cpus = read_cpu_map();
1360
1361 get_term_dimensions(&winsize);
1362 if (print_entries == 0) {
1363 update_print_entries(&winsize);
1364 signal(SIGWINCH, sig_winch_handler);
1365 }
1213 1366
1214 return __cmd_top(); 1367 return __cmd_top();
1215} 1368}
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-10 20:21:44 -0400