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-rw-r--r--tools/perf/builtin-top.c597
1 files changed, 373 insertions, 224 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e23bc74e734f..31f2e597800c 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -20,8 +20,10 @@
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"
@@ -54,26 +56,30 @@
54 56
55static int fd[MAX_NR_CPUS][MAX_COUNTERS]; 57static int fd[MAX_NR_CPUS][MAX_COUNTERS];
56 58
57static int system_wide = 0; 59static int system_wide = 0;
58 60
59static int default_interval = 100000; 61static int default_interval = 0;
60 62
61static int count_filter = 5; 63static int count_filter = 5;
62static int print_entries = 15; 64static int print_entries;
63 65
64static int target_pid = -1; 66static int target_pid = -1;
65static int inherit = 0; 67static int inherit = 0;
66static int profile_cpu = -1; 68static int profile_cpu = -1;
67static int nr_cpus = 0; 69static int nr_cpus = 0;
68static unsigned int realtime_prio = 0; 70static unsigned int realtime_prio = 0;
69static int group = 0; 71static int group = 0;
70static unsigned int page_size; 72static unsigned int page_size;
71static unsigned int mmap_pages = 16; 73static unsigned int mmap_pages = 16;
72static int freq = 0; 74static int freq = 1000; /* 1 KHz */
73 75
74static int delay_secs = 2; 76static int delay_secs = 2;
75static int zero; 77static int zero = 0;
76static int dump_symtab; 78static int dump_symtab = 0;
79
80static bool hide_kernel_symbols = false;
81static bool hide_user_symbols = false;
82static struct winsize winsize;
77 83
78/* 84/*
79 * Source 85 * Source
@@ -86,87 +92,130 @@ struct source_line {
86 struct source_line *next; 92 struct source_line *next;
87}; 93};
88 94
89static char *sym_filter = NULL; 95static char *sym_filter = NULL;
90struct sym_entry *sym_filter_entry = NULL; 96struct sym_entry *sym_filter_entry = NULL;
91static int sym_pcnt_filter = 5; 97struct sym_entry *sym_filter_entry_sched = NULL;
92static int sym_counter = 0; 98static int sym_pcnt_filter = 5;
93static int display_weighted = -1; 99static int sym_counter = 0;
100static int display_weighted = -1;
94 101
95/* 102/*
96 * Symbols 103 * Symbols
97 */ 104 */
98 105
99static u64 min_ip; 106struct sym_entry_source {
100static u64 max_ip = -1ll; 107 struct source_line *source;
108 struct source_line *lines;
109 struct source_line **lines_tail;
110 pthread_mutex_t lock;
111};
101 112
102struct sym_entry { 113struct sym_entry {
103 struct rb_node rb_node; 114 struct rb_node rb_node;
104 struct list_head node; 115 struct list_head node;
105 unsigned long count[MAX_COUNTERS];
106 unsigned long snap_count; 116 unsigned long snap_count;
107 double weight; 117 double weight;
108 int skip; 118 int skip;
109 struct source_line *source; 119 u16 name_len;
110 struct source_line *lines; 120 u8 origin;
111 struct source_line **lines_tail; 121 struct map *map;
112 pthread_mutex_t source_lock; 122 struct sym_entry_source *src;
123 unsigned long count[0];
113}; 124};
114 125
115/* 126/*
116 * Source functions 127 * Source functions
117 */ 128 */
118 129
130static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
131{
132 return ((void *)self) + symbol_conf.priv_size;
133}
134
135static void get_term_dimensions(struct winsize *ws)
136{
137 char *s = getenv("LINES");
138
139 if (s != NULL) {
140 ws->ws_row = atoi(s);
141 s = getenv("COLUMNS");
142 if (s != NULL) {
143 ws->ws_col = atoi(s);
144 if (ws->ws_row && ws->ws_col)
145 return;
146 }
147 }
148#ifdef TIOCGWINSZ
149 if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
150 ws->ws_row && ws->ws_col)
151 return;
152#endif
153 ws->ws_row = 25;
154 ws->ws_col = 80;
155}
156
157static void update_print_entries(struct winsize *ws)
158{
159 print_entries = ws->ws_row;
160
161 if (print_entries > 9)
162 print_entries -= 9;
163}
164
165static void sig_winch_handler(int sig __used)
166{
167 get_term_dimensions(&winsize);
168 update_print_entries(&winsize);
169}
170
119static void parse_source(struct sym_entry *syme) 171static void parse_source(struct sym_entry *syme)
120{ 172{
121 struct symbol *sym; 173 struct symbol *sym;
122 struct module *module; 174 struct sym_entry_source *source;
123 struct section *section = NULL; 175 struct map *map;
124 FILE *file; 176 FILE *file;
125 char command[PATH_MAX*2]; 177 char command[PATH_MAX*2];
126 const char *path = vmlinux_name; 178 const char *path;
127 u64 start, end, len; 179 u64 len;
128 180
129 if (!syme) 181 if (!syme)
130 return; 182 return;
131 183
132 if (syme->lines) { 184 if (syme->src == NULL) {
133 pthread_mutex_lock(&syme->source_lock); 185 syme->src = zalloc(sizeof(*source));
134 goto out_assign; 186 if (syme->src == NULL)
187 return;
188 pthread_mutex_init(&syme->src->lock, NULL);
135 } 189 }
136 190
137 sym = (struct symbol *)(syme + 1); 191 source = syme->src;
138 module = sym->module;
139
140 if (module)
141 path = module->path;
142 if (!path)
143 return;
144 192
145 start = sym->obj_start; 193 if (source->lines) {
146 if (!start) 194 pthread_mutex_lock(&source->lock);
147 start = sym->start; 195 goto out_assign;
148
149 if (module) {
150 section = module->sections->find_section(module->sections, ".text");
151 if (section)
152 start -= section->vma;
153 } 196 }
154 197
155 end = start + sym->end - sym->start + 1; 198 sym = sym_entry__symbol(syme);
199 map = syme->map;
200 path = map->dso->long_name;
201
156 len = sym->end - sym->start; 202 len = sym->end - sym->start;
157 203
158 sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", start, end, path); 204 sprintf(command,
205 "objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s",
206 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start),
207 BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path);
159 208
160 file = popen(command, "r"); 209 file = popen(command, "r");
161 if (!file) 210 if (!file)
162 return; 211 return;
163 212
164 pthread_mutex_lock(&syme->source_lock); 213 pthread_mutex_lock(&source->lock);
165 syme->lines_tail = &syme->lines; 214 source->lines_tail = &source->lines;
166 while (!feof(file)) { 215 while (!feof(file)) {
167 struct source_line *src; 216 struct source_line *src;
168 size_t dummy = 0; 217 size_t dummy = 0;
169 char *c; 218 char *c, *sep;
170 219
171 src = malloc(sizeof(struct source_line)); 220 src = malloc(sizeof(struct source_line));
172 assert(src != NULL); 221 assert(src != NULL);
@@ -182,24 +231,19 @@ static void parse_source(struct sym_entry *syme)
182 *c = 0; 231 *c = 0;
183 232
184 src->next = NULL; 233 src->next = NULL;
185 *syme->lines_tail = src; 234 *source->lines_tail = src;
186 syme->lines_tail = &src->next; 235 source->lines_tail = &src->next;
187 236
188 if (strlen(src->line)>8 && src->line[8] == ':') { 237 src->eip = strtoull(src->line, &sep, 16);
189 src->eip = strtoull(src->line, NULL, 16); 238 if (*sep == ':')
190 if (section) 239 src->eip = map__objdump_2ip(map, src->eip);
191 src->eip += section->vma; 240 else /* this line has no ip info (e.g. source line) */
192 } 241 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 } 242 }
199 pclose(file); 243 pclose(file);
200out_assign: 244out_assign:
201 sym_filter_entry = syme; 245 sym_filter_entry = syme;
202 pthread_mutex_unlock(&syme->source_lock); 246 pthread_mutex_unlock(&source->lock);
203} 247}
204 248
205static void __zero_source_counters(struct sym_entry *syme) 249static void __zero_source_counters(struct sym_entry *syme)
@@ -207,7 +251,7 @@ static void __zero_source_counters(struct sym_entry *syme)
207 int i; 251 int i;
208 struct source_line *line; 252 struct source_line *line;
209 253
210 line = syme->lines; 254 line = syme->src->lines;
211 while (line) { 255 while (line) {
212 for (i = 0; i < nr_counters; i++) 256 for (i = 0; i < nr_counters; i++)
213 line->count[i] = 0; 257 line->count[i] = 0;
@@ -222,13 +266,16 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
222 if (syme != sym_filter_entry) 266 if (syme != sym_filter_entry)
223 return; 267 return;
224 268
225 if (pthread_mutex_trylock(&syme->source_lock)) 269 if (pthread_mutex_trylock(&syme->src->lock))
226 return; 270 return;
227 271
228 if (!syme->source) 272 if (syme->src == NULL || syme->src->source == NULL)
229 goto out_unlock; 273 goto out_unlock;
230 274
231 for (line = syme->lines; line; line = line->next) { 275 for (line = syme->src->lines; line; line = line->next) {
276 /* skip lines without IP info */
277 if (line->eip == 0)
278 continue;
232 if (line->eip == ip) { 279 if (line->eip == ip) {
233 line->count[counter]++; 280 line->count[counter]++;
234 break; 281 break;
@@ -237,32 +284,28 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
237 break; 284 break;
238 } 285 }
239out_unlock: 286out_unlock:
240 pthread_mutex_unlock(&syme->source_lock); 287 pthread_mutex_unlock(&syme->src->lock);
241} 288}
242 289
290#define PATTERN_LEN (BITS_PER_LONG / 4 + 2)
291
243static void lookup_sym_source(struct sym_entry *syme) 292static void lookup_sym_source(struct sym_entry *syme)
244{ 293{
245 struct symbol *symbol = (struct symbol *)(syme + 1); 294 struct symbol *symbol = sym_entry__symbol(syme);
246 struct source_line *line; 295 struct source_line *line;
247 char pattern[PATH_MAX]; 296 char pattern[PATTERN_LEN + 1];
248 char *idx;
249 297
250 sprintf(pattern, "<%s>:", symbol->name); 298 sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4,
299 map__rip_2objdump(syme->map, symbol->start));
251 300
252 if (symbol->module) { 301 pthread_mutex_lock(&syme->src->lock);
253 idx = strstr(pattern, "\t"); 302 for (line = syme->src->lines; line; line = line->next) {
254 if (idx) 303 if (memcmp(line->line, pattern, PATTERN_LEN) == 0) {
255 *idx = 0; 304 syme->src->source = line;
256 }
257
258 pthread_mutex_lock(&syme->source_lock);
259 for (line = syme->lines; line; line = line->next) {
260 if (strstr(line->line, pattern)) {
261 syme->source = line;
262 break; 305 break;
263 } 306 }
264 } 307 }
265 pthread_mutex_unlock(&syme->source_lock); 308 pthread_mutex_unlock(&syme->src->lock);
266} 309}
267 310
268static void show_lines(struct source_line *queue, int count, int total) 311static void show_lines(struct source_line *queue, int count, int total)
@@ -292,24 +335,24 @@ static void show_details(struct sym_entry *syme)
292 if (!syme) 335 if (!syme)
293 return; 336 return;
294 337
295 if (!syme->source) 338 if (!syme->src->source)
296 lookup_sym_source(syme); 339 lookup_sym_source(syme);
297 340
298 if (!syme->source) 341 if (!syme->src->source)
299 return; 342 return;
300 343
301 symbol = (struct symbol *)(syme + 1); 344 symbol = sym_entry__symbol(syme);
302 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); 345 printf("Showing %s for %s\n", event_name(sym_counter), symbol->name);
303 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); 346 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
304 347
305 pthread_mutex_lock(&syme->source_lock); 348 pthread_mutex_lock(&syme->src->lock);
306 line = syme->source; 349 line = syme->src->source;
307 while (line) { 350 while (line) {
308 total += line->count[sym_counter]; 351 total += line->count[sym_counter];
309 line = line->next; 352 line = line->next;
310 } 353 }
311 354
312 line = syme->source; 355 line = syme->src->source;
313 while (line) { 356 while (line) {
314 float pcnt = 0.0; 357 float pcnt = 0.0;
315 358
@@ -334,13 +377,13 @@ static void show_details(struct sym_entry *syme)
334 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; 377 line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8;
335 line = line->next; 378 line = line->next;
336 } 379 }
337 pthread_mutex_unlock(&syme->source_lock); 380 pthread_mutex_unlock(&syme->src->lock);
338 if (more) 381 if (more)
339 printf("%d lines not displayed, maybe increase display entries [e]\n", more); 382 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
340} 383}
341 384
342/* 385/*
343 * Symbols will be added here in record_ip and will get out 386 * Symbols will be added here in event__process_sample and will get out
344 * after decayed. 387 * after decayed.
345 */ 388 */
346static LIST_HEAD(active_symbols); 389static LIST_HEAD(active_symbols);
@@ -411,6 +454,8 @@ static void print_sym_table(void)
411 struct sym_entry *syme, *n; 454 struct sym_entry *syme, *n;
412 struct rb_root tmp = RB_ROOT; 455 struct rb_root tmp = RB_ROOT;
413 struct rb_node *nd; 456 struct rb_node *nd;
457 int sym_width = 0, dso_width = 0, max_dso_width;
458 const int win_width = winsize.ws_col - 1;
414 459
415 samples = userspace_samples = 0; 460 samples = userspace_samples = 0;
416 461
@@ -422,6 +467,14 @@ static void print_sym_table(void)
422 list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 467 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
423 syme->snap_count = syme->count[snap]; 468 syme->snap_count = syme->count[snap];
424 if (syme->snap_count != 0) { 469 if (syme->snap_count != 0) {
470
471 if ((hide_user_symbols &&
472 syme->origin == PERF_RECORD_MISC_USER) ||
473 (hide_kernel_symbols &&
474 syme->origin == PERF_RECORD_MISC_KERNEL)) {
475 list_remove_active_sym(syme);
476 continue;
477 }
425 syme->weight = sym_weight(syme); 478 syme->weight = sym_weight(syme);
426 rb_insert_active_sym(&tmp, syme); 479 rb_insert_active_sym(&tmp, syme);
427 sum_ksamples += syme->snap_count; 480 sum_ksamples += syme->snap_count;
@@ -434,8 +487,7 @@ static void print_sym_table(void)
434 487
435 puts(CONSOLE_CLEAR); 488 puts(CONSOLE_CLEAR);
436 489
437 printf( 490 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
438"------------------------------------------------------------------------------\n");
439 printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", 491 printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [",
440 samples_per_sec, 492 samples_per_sec,
441 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); 493 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
@@ -473,33 +525,57 @@ static void print_sym_table(void)
473 printf(", %d CPUs)\n", nr_cpus); 525 printf(", %d CPUs)\n", nr_cpus);
474 } 526 }
475 527
476 printf("------------------------------------------------------------------------------\n\n"); 528 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
477 529
478 if (sym_filter_entry) { 530 if (sym_filter_entry) {
479 show_details(sym_filter_entry); 531 show_details(sym_filter_entry);
480 return; 532 return;
481 } 533 }
482 534
535 /*
536 * Find the longest symbol name that will be displayed
537 */
538 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
539 syme = rb_entry(nd, struct sym_entry, rb_node);
540 if (++printed > print_entries ||
541 (int)syme->snap_count < count_filter)
542 continue;
543
544 if (syme->map->dso->long_name_len > dso_width)
545 dso_width = syme->map->dso->long_name_len;
546
547 if (syme->name_len > sym_width)
548 sym_width = syme->name_len;
549 }
550
551 printed = 0;
552
553 max_dso_width = winsize.ws_col - sym_width - 29;
554 if (dso_width > max_dso_width)
555 dso_width = max_dso_width;
556 putchar('\n');
483 if (nr_counters == 1) 557 if (nr_counters == 1)
484 printf(" samples pcnt"); 558 printf(" samples pcnt");
485 else 559 else
486 printf(" weight samples pcnt"); 560 printf(" weight samples pcnt");
487 561
488 if (verbose) 562 if (verbose)
489 printf(" RIP "); 563 printf(" RIP ");
490 printf(" kernel function\n"); 564 printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
491 printf(" %s _______ _____", 565 printf(" %s _______ _____",
492 nr_counters == 1 ? " " : "______"); 566 nr_counters == 1 ? " " : "______");
493 if (verbose) 567 if (verbose)
494 printf(" ________________"); 568 printf(" ________________");
495 printf(" _______________\n\n"); 569 printf(" %-*.*s", sym_width, sym_width, graph_line);
570 printf(" %-*.*s", dso_width, dso_width, graph_line);
571 puts("\n");
496 572
497 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 573 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
498 struct symbol *sym; 574 struct symbol *sym;
499 double pcnt; 575 double pcnt;
500 576
501 syme = rb_entry(nd, struct sym_entry, rb_node); 577 syme = rb_entry(nd, struct sym_entry, rb_node);
502 sym = (struct symbol *)(syme + 1); 578 sym = sym_entry__symbol(syme);
503 579
504 if (++printed > print_entries || (int)syme->snap_count < count_filter) 580 if (++printed > print_entries || (int)syme->snap_count < count_filter)
505 continue; 581 continue;
@@ -508,17 +584,18 @@ static void print_sym_table(void)
508 sum_ksamples)); 584 sum_ksamples));
509 585
510 if (nr_counters == 1 || !display_weighted) 586 if (nr_counters == 1 || !display_weighted)
511 printf("%20.2f - ", syme->weight); 587 printf("%20.2f ", syme->weight);
512 else 588 else
513 printf("%9.1f %10ld - ", syme->weight, syme->snap_count); 589 printf("%9.1f %10ld ", syme->weight, syme->snap_count);
514 590
515 percent_color_fprintf(stdout, "%4.1f%%", pcnt); 591 percent_color_fprintf(stdout, "%4.1f%%", pcnt);
516 if (verbose) 592 if (verbose)
517 printf(" - %016llx", sym->start); 593 printf(" %016llx", sym->start);
518 printf(" : %s", sym->name); 594 printf(" %-*.*s", sym_width, sym_width, sym->name);
519 if (sym->module) 595 printf(" %-*.*s\n", dso_width, dso_width,
520 printf("\t[%s]", sym->module->name); 596 dso_width >= syme->map->dso->long_name_len ?
521 printf("\n"); 597 syme->map->dso->long_name :
598 syme->map->dso->short_name);
522 } 599 }
523} 600}
524 601
@@ -565,10 +642,10 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
565 642
566 /* zero counters of active symbol */ 643 /* zero counters of active symbol */
567 if (syme) { 644 if (syme) {
568 pthread_mutex_lock(&syme->source_lock); 645 pthread_mutex_lock(&syme->src->lock);
569 __zero_source_counters(syme); 646 __zero_source_counters(syme);
570 *target = NULL; 647 *target = NULL;
571 pthread_mutex_unlock(&syme->source_lock); 648 pthread_mutex_unlock(&syme->src->lock);
572 } 649 }
573 650
574 fprintf(stdout, "\n%s: ", msg); 651 fprintf(stdout, "\n%s: ", msg);
@@ -584,7 +661,7 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
584 pthread_mutex_unlock(&active_symbols_lock); 661 pthread_mutex_unlock(&active_symbols_lock);
585 662
586 list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 663 list_for_each_entry_safe_from(syme, n, &active_symbols, node) {
587 struct symbol *sym = (struct symbol *)(syme + 1); 664 struct symbol *sym = sym_entry__symbol(syme);
588 665
589 if (!strcmp(buf, sym->name)) { 666 if (!strcmp(buf, sym->name)) {
590 found = syme; 667 found = syme;
@@ -593,7 +670,7 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
593 } 670 }
594 671
595 if (!found) { 672 if (!found) {
596 fprintf(stderr, "Sorry, %s is not active.\n", sym_filter); 673 fprintf(stderr, "Sorry, %s is not active.\n", buf);
597 sleep(1); 674 sleep(1);
598 return; 675 return;
599 } else 676 } else
@@ -608,7 +685,7 @@ static void print_mapped_keys(void)
608 char *name = NULL; 685 char *name = NULL;
609 686
610 if (sym_filter_entry) { 687 if (sym_filter_entry) {
611 struct symbol *sym = (struct symbol *)(sym_filter_entry+1); 688 struct symbol *sym = sym_entry__symbol(sym_filter_entry);
612 name = sym->name; 689 name = sym->name;
613 } 690 }
614 691
@@ -621,15 +698,19 @@ static void print_mapped_keys(void)
621 698
622 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); 699 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
623 700
624 if (vmlinux_name) { 701 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); 702 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
626 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); 703 fprintf(stdout, "\t[S] stop annotation.\n");
627 fprintf(stdout, "\t[S] stop annotation.\n");
628 }
629 704
630 if (nr_counters > 1) 705 if (nr_counters > 1)
631 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); 706 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0);
632 707
708 fprintf(stdout,
709 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
710 hide_kernel_symbols ? "yes" : "no");
711 fprintf(stdout,
712 "\t[U] hide user symbols. \t(%s)\n",
713 hide_user_symbols ? "yes" : "no");
633 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); 714 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0);
634 fprintf(stdout, "\t[qQ] quit.\n"); 715 fprintf(stdout, "\t[qQ] quit.\n");
635} 716}
@@ -643,14 +724,15 @@ static int key_mapped(int c)
643 case 'z': 724 case 'z':
644 case 'q': 725 case 'q':
645 case 'Q': 726 case 'Q':
727 case 'K':
728 case 'U':
729 case 'F':
730 case 's':
731 case 'S':
646 return 1; 732 return 1;
647 case 'E': 733 case 'E':
648 case 'w': 734 case 'w':
649 return nr_counters > 1 ? 1 : 0; 735 return nr_counters > 1 ? 1 : 0;
650 case 'F':
651 case 's':
652 case 'S':
653 return vmlinux_name ? 1 : 0;
654 default: 736 default:
655 break; 737 break;
656 } 738 }
@@ -691,6 +773,11 @@ static void handle_keypress(int c)
691 break; 773 break;
692 case 'e': 774 case 'e':
693 prompt_integer(&print_entries, "Enter display entries (lines)"); 775 prompt_integer(&print_entries, "Enter display entries (lines)");
776 if (print_entries == 0) {
777 sig_winch_handler(SIGWINCH);
778 signal(SIGWINCH, sig_winch_handler);
779 } else
780 signal(SIGWINCH, SIG_DFL);
694 break; 781 break;
695 case 'E': 782 case 'E':
696 if (nr_counters > 1) { 783 if (nr_counters > 1) {
@@ -715,9 +802,14 @@ static void handle_keypress(int c)
715 case 'F': 802 case 'F':
716 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); 803 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
717 break; 804 break;
805 case 'K':
806 hide_kernel_symbols = !hide_kernel_symbols;
807 break;
718 case 'q': 808 case 'q':
719 case 'Q': 809 case 'Q':
720 printf("exiting.\n"); 810 printf("exiting.\n");
811 if (dump_symtab)
812 dsos__fprintf(stderr);
721 exit(0); 813 exit(0);
722 case 's': 814 case 's':
723 prompt_symbol(&sym_filter_entry, "Enter details symbol"); 815 prompt_symbol(&sym_filter_entry, "Enter details symbol");
@@ -728,12 +820,15 @@ static void handle_keypress(int c)
728 else { 820 else {
729 struct sym_entry *syme = sym_filter_entry; 821 struct sym_entry *syme = sym_filter_entry;
730 822
731 pthread_mutex_lock(&syme->source_lock); 823 pthread_mutex_lock(&syme->src->lock);
732 sym_filter_entry = NULL; 824 sym_filter_entry = NULL;
733 __zero_source_counters(syme); 825 __zero_source_counters(syme);
734 pthread_mutex_unlock(&syme->source_lock); 826 pthread_mutex_unlock(&syme->src->lock);
735 } 827 }
736 break; 828 break;
829 case 'U':
830 hide_user_symbols = !hide_user_symbols;
831 break;
737 case 'w': 832 case 'w':
738 display_weighted = ~display_weighted; 833 display_weighted = ~display_weighted;
739 break; 834 break;
@@ -790,7 +885,7 @@ static const char *skip_symbols[] = {
790 NULL 885 NULL
791}; 886};
792 887
793static int symbol_filter(struct dso *self, struct symbol *sym) 888static int symbol_filter(struct map *map, struct symbol *sym)
794{ 889{
795 struct sym_entry *syme; 890 struct sym_entry *syme;
796 const char *name = sym->name; 891 const char *name = sym->name;
@@ -812,10 +907,15 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
812 strstr(name, "_text_end")) 907 strstr(name, "_text_end"))
813 return 1; 908 return 1;
814 909
815 syme = dso__sym_priv(self, sym); 910 syme = symbol__priv(sym);
816 pthread_mutex_init(&syme->source_lock, NULL); 911 syme->map = map;
817 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) 912 syme->src = NULL;
818 sym_filter_entry = syme; 913
914 if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
915 /* schedule initial sym_filter_entry setup */
916 sym_filter_entry_sched = syme;
917 sym_filter = NULL;
918 }
819 919
820 for (i = 0; skip_symbols[i]; i++) { 920 for (i = 0; skip_symbols[i]; i++) {
821 if (!strcmp(skip_symbols[i], name)) { 921 if (!strcmp(skip_symbols[i], name)) {
@@ -824,75 +924,99 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
824 } 924 }
825 } 925 }
826 926
927 if (!syme->skip)
928 syme->name_len = strlen(sym->name);
929
827 return 0; 930 return 0;
828} 931}
829 932
830static int parse_symbols(void) 933static void event__process_sample(const event_t *self,
934 struct perf_session *session, int counter)
831{ 935{
832 struct rb_node *node; 936 u64 ip = self->ip.ip;
833 struct symbol *sym; 937 struct sym_entry *syme;
834 int use_modules = vmlinux_name ? 1 : 0; 938 struct addr_location al;
835 939 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;
842 940
843 node = rb_first(&kernel_dso->syms); 941 ++samples;
844 sym = rb_entry(node, struct symbol, rb_node);
845 min_ip = sym->start;
846 942
847 node = rb_last(&kernel_dso->syms); 943 switch (origin) {
848 sym = rb_entry(node, struct symbol, rb_node); 944 case PERF_RECORD_MISC_USER:
849 max_ip = sym->end; 945 ++userspace_samples;
946 if (hide_user_symbols)
947 return;
948 break;
949 case PERF_RECORD_MISC_KERNEL:
950 if (hide_kernel_symbols)
951 return;
952 break;
953 default:
954 return;
955 }
850 956
851 if (dump_symtab) 957 if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 ||
852 dso__fprintf(kernel_dso, stderr); 958 al.filtered)
959 return;
853 960
854 return 0; 961 if (al.sym == NULL) {
962 /*
963 * As we do lazy loading of symtabs we only will know if the
964 * specified vmlinux file is invalid when we actually have a
965 * hit in kernel space and then try to load it. So if we get
966 * here and there are _no_ symbols in the DSO backing the
967 * kernel map, bail out.
968 *
969 * We may never get here, for instance, if we use -K/
970 * --hide-kernel-symbols, even if the user specifies an
971 * invalid --vmlinux ;-)
972 */
973 if (al.map == session->vmlinux_maps[MAP__FUNCTION] &&
974 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
975 pr_err("The %s file can't be used\n",
976 symbol_conf.vmlinux_name);
977 exit(1);
978 }
855 979
856out_delete_dso: 980 return;
857 dso__delete(kernel_dso); 981 }
858 kernel_dso = NULL;
859 return -1;
860}
861 982
862/* 983 /* let's see, whether we need to install initial sym_filter_entry */
863 * Binary search in the histogram table and record the hit: 984 if (sym_filter_entry_sched) {
864 */ 985 sym_filter_entry = sym_filter_entry_sched;
865static void record_ip(u64 ip, int counter) 986 sym_filter_entry_sched = NULL;
866{ 987 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 } 988 }
882 989
883 samples--; 990 syme = symbol__priv(al.sym);
991 if (!syme->skip) {
992 syme->count[counter]++;
993 syme->origin = origin;
994 record_precise_ip(syme, counter, ip);
995 pthread_mutex_lock(&active_symbols_lock);
996 if (list_empty(&syme->node) || !syme->node.next)
997 __list_insert_active_sym(syme);
998 pthread_mutex_unlock(&active_symbols_lock);
999 }
884} 1000}
885 1001
886static void process_event(u64 ip, int counter, int user) 1002static int event__process(event_t *event, struct perf_session *session)
887{ 1003{
888 samples++; 1004 switch (event->header.type) {
889 1005 case PERF_RECORD_COMM:
890 if (user) { 1006 event__process_comm(event, session);
891 userspace_samples++; 1007 break;
892 return; 1008 case PERF_RECORD_MMAP:
1009 event__process_mmap(event, session);
1010 break;
1011 case PERF_RECORD_FORK:
1012 case PERF_RECORD_EXIT:
1013 event__process_task(event, session);
1014 break;
1015 default:
1016 break;
893 } 1017 }
894 1018
895 record_ip(ip, counter); 1019 return 0;
896} 1020}
897 1021
898struct mmap_data { 1022struct mmap_data {
@@ -913,17 +1037,14 @@ static unsigned int mmap_read_head(struct mmap_data *md)
913 return head; 1037 return head;
914} 1038}
915 1039
916struct timeval last_read, this_read; 1040static void perf_session__mmap_read_counter(struct perf_session *self,
917 1041 struct mmap_data *md)
918static void mmap_read_counter(struct mmap_data *md)
919{ 1042{
920 unsigned int head = mmap_read_head(md); 1043 unsigned int head = mmap_read_head(md);
921 unsigned int old = md->prev; 1044 unsigned int old = md->prev;
922 unsigned char *data = md->base + page_size; 1045 unsigned char *data = md->base + page_size;
923 int diff; 1046 int diff;
924 1047
925 gettimeofday(&this_read, NULL);
926
927 /* 1048 /*
928 * If we're further behind than half the buffer, there's a chance 1049 * 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. 1050 * the writer will bite our tail and mess up the samples under us.
@@ -934,14 +1055,7 @@ static void mmap_read_counter(struct mmap_data *md)
934 */ 1055 */
935 diff = head - old; 1056 diff = head - old;
936 if (diff > md->mask / 2 || diff < 0) { 1057 if (diff > md->mask / 2 || diff < 0) {
937 struct timeval iv; 1058 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 1059
946 /* 1060 /*
947 * head points to a known good entry, start there. 1061 * head points to a known good entry, start there.
@@ -949,8 +1063,6 @@ static void mmap_read_counter(struct mmap_data *md)
949 old = head; 1063 old = head;
950 } 1064 }
951 1065
952 last_read = this_read;
953
954 for (; old != head;) { 1066 for (; old != head;) {
955 event_t *event = (event_t *)&data[old & md->mask]; 1067 event_t *event = (event_t *)&data[old & md->mask];
956 1068
@@ -978,13 +1090,11 @@ static void mmap_read_counter(struct mmap_data *md)
978 event = &event_copy; 1090 event = &event_copy;
979 } 1091 }
980 1092
1093 if (event->header.type == PERF_RECORD_SAMPLE)
1094 event__process_sample(event, self, md->counter);
1095 else
1096 event__process(event, self);
981 old += size; 1097 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 } 1098 }
989 1099
990 md->prev = old; 1100 md->prev = old;
@@ -993,13 +1103,13 @@ static void mmap_read_counter(struct mmap_data *md)
993static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; 1103static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
994static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; 1104static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
995 1105
996static void mmap_read(void) 1106static void perf_session__mmap_read(struct perf_session *self)
997{ 1107{
998 int i, counter; 1108 int i, counter;
999 1109
1000 for (i = 0; i < nr_cpus; i++) { 1110 for (i = 0; i < nr_cpus; i++) {
1001 for (counter = 0; counter < nr_counters; counter++) 1111 for (counter = 0; counter < nr_counters; counter++)
1002 mmap_read_counter(&mmap_array[i][counter]); 1112 perf_session__mmap_read_counter(self, &mmap_array[i][counter]);
1003 } 1113 }
1004} 1114}
1005 1115
@@ -1018,8 +1128,15 @@ static void start_counter(int i, int counter)
1018 attr = attrs + counter; 1128 attr = attrs + counter;
1019 1129
1020 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; 1130 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
1021 attr->freq = freq; 1131
1132 if (freq) {
1133 attr->sample_type |= PERF_SAMPLE_PERIOD;
1134 attr->freq = 1;
1135 attr->sample_freq = freq;
1136 }
1137
1022 attr->inherit = (cpu < 0) && inherit; 1138 attr->inherit = (cpu < 0) && inherit;
1139 attr->mmap = 1;
1023 1140
1024try_again: 1141try_again:
1025 fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); 1142 fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0);
@@ -1077,6 +1194,18 @@ static int __cmd_top(void)
1077 pthread_t thread; 1194 pthread_t thread;
1078 int i, counter; 1195 int i, counter;
1079 int ret; 1196 int ret;
1197 /*
1198 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
1199 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
1200 */
1201 struct perf_session *session = perf_session__new(NULL, O_WRONLY, false);
1202 if (session == NULL)
1203 return -ENOMEM;
1204
1205 if (target_pid != -1)
1206 event__synthesize_thread(target_pid, event__process, session);
1207 else
1208 event__synthesize_threads(event__process, session);
1080 1209
1081 for (i = 0; i < nr_cpus; i++) { 1210 for (i = 0; i < nr_cpus; i++) {
1082 group_fd = -1; 1211 group_fd = -1;
@@ -1087,7 +1216,7 @@ static int __cmd_top(void)
1087 /* Wait for a minimal set of events before starting the snapshot */ 1216 /* Wait for a minimal set of events before starting the snapshot */
1088 poll(event_array, nr_poll, 100); 1217 poll(event_array, nr_poll, 100);
1089 1218
1090 mmap_read(); 1219 perf_session__mmap_read(session);
1091 1220
1092 if (pthread_create(&thread, NULL, display_thread, NULL)) { 1221 if (pthread_create(&thread, NULL, display_thread, NULL)) {
1093 printf("Could not create display thread.\n"); 1222 printf("Could not create display thread.\n");
@@ -1107,7 +1236,7 @@ static int __cmd_top(void)
1107 while (1) { 1236 while (1) {
1108 int hits = samples; 1237 int hits = samples;
1109 1238
1110 mmap_read(); 1239 perf_session__mmap_read(session);
1111 1240
1112 if (hits == samples) 1241 if (hits == samples)
1113 ret = poll(event_array, nr_poll, 100); 1242 ret = poll(event_array, nr_poll, 100);
@@ -1133,7 +1262,10 @@ static const struct option options[] = {
1133 "system-wide collection from all CPUs"), 1262 "system-wide collection from all CPUs"),
1134 OPT_INTEGER('C', "CPU", &profile_cpu, 1263 OPT_INTEGER('C', "CPU", &profile_cpu,
1135 "CPU to profile on"), 1264 "CPU to profile on"),
1136 OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"), 1265 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1266 "file", "vmlinux pathname"),
1267 OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
1268 "hide kernel symbols"),
1137 OPT_INTEGER('m', "mmap-pages", &mmap_pages, 1269 OPT_INTEGER('m', "mmap-pages", &mmap_pages,
1138 "number of mmap data pages"), 1270 "number of mmap data pages"),
1139 OPT_INTEGER('r', "realtime", &realtime_prio, 1271 OPT_INTEGER('r', "realtime", &realtime_prio,
@@ -1149,13 +1281,15 @@ static const struct option options[] = {
1149 OPT_BOOLEAN('i', "inherit", &inherit, 1281 OPT_BOOLEAN('i', "inherit", &inherit,
1150 "child tasks inherit counters"), 1282 "child tasks inherit counters"),
1151 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", 1283 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
1152 "symbol to annotate - requires -k option"), 1284 "symbol to annotate"),
1153 OPT_BOOLEAN('z', "zero", &zero, 1285 OPT_BOOLEAN('z', "zero", &zero,
1154 "zero history across updates"), 1286 "zero history across updates"),
1155 OPT_INTEGER('F', "freq", &freq, 1287 OPT_INTEGER('F', "freq", &freq,
1156 "profile at this frequency"), 1288 "profile at this frequency"),
1157 OPT_INTEGER('E', "entries", &print_entries, 1289 OPT_INTEGER('E', "entries", &print_entries,
1158 "display this many functions"), 1290 "display this many functions"),
1291 OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols,
1292 "hide user symbols"),
1159 OPT_BOOLEAN('v', "verbose", &verbose, 1293 OPT_BOOLEAN('v', "verbose", &verbose,
1160 "be more verbose (show counter open errors, etc)"), 1294 "be more verbose (show counter open errors, etc)"),
1161 OPT_END() 1295 OPT_END()
@@ -1165,19 +1299,12 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1165{ 1299{
1166 int counter; 1300 int counter;
1167 1301
1168 symbol__init();
1169
1170 page_size = sysconf(_SC_PAGE_SIZE); 1302 page_size = sysconf(_SC_PAGE_SIZE);
1171 1303
1172 argc = parse_options(argc, argv, options, top_usage, 0); 1304 argc = parse_options(argc, argv, options, top_usage, 0);
1173 if (argc) 1305 if (argc)
1174 usage_with_options(top_usage, options); 1306 usage_with_options(top_usage, options);
1175 1307
1176 if (freq) {
1177 default_interval = freq;
1178 freq = 1;
1179 }
1180
1181 /* CPU and PID are mutually exclusive */ 1308 /* CPU and PID are mutually exclusive */
1182 if (target_pid != -1 && profile_cpu != -1) { 1309 if (target_pid != -1 && profile_cpu != -1) {
1183 printf("WARNING: PID switch overriding CPU\n"); 1310 printf("WARNING: PID switch overriding CPU\n");
@@ -1188,11 +1315,27 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1188 if (!nr_counters) 1315 if (!nr_counters)
1189 nr_counters = 1; 1316 nr_counters = 1;
1190 1317
1318 symbol_conf.priv_size = (sizeof(struct sym_entry) +
1319 (nr_counters + 1) * sizeof(unsigned long));
1320
1321 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1322 if (symbol__init() < 0)
1323 return -1;
1324
1191 if (delay_secs < 1) 1325 if (delay_secs < 1)
1192 delay_secs = 1; 1326 delay_secs = 1;
1193 1327
1194 parse_symbols(); 1328 /*
1195 parse_source(sym_filter_entry); 1329 * User specified count overrides default frequency.
1330 */
1331 if (default_interval)
1332 freq = 0;
1333 else if (freq) {
1334 default_interval = freq;
1335 } else {
1336 fprintf(stderr, "frequency and count are zero, aborting\n");
1337 exit(EXIT_FAILURE);
1338 }
1196 1339
1197 /* 1340 /*
1198 * Fill in the ones not specifically initialized via -c: 1341 * Fill in the ones not specifically initialized via -c:
@@ -1211,5 +1354,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
1211 if (target_pid != -1 || profile_cpu != -1) 1354 if (target_pid != -1 || profile_cpu != -1)
1212 nr_cpus = 1; 1355 nr_cpus = 1;
1213 1356
1357 get_term_dimensions(&winsize);
1358 if (print_entries == 0) {
1359 update_print_entries(&winsize);
1360 signal(SIGWINCH, sig_winch_handler);
1361 }
1362
1214 return __cmd_top(); 1363 return __cmd_top();
1215} 1364}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 19:15:16 -0500