186470930SIngo Molnar /* 286470930SIngo Molnar * builtin-top.c 386470930SIngo Molnar * 486470930SIngo Molnar * Builtin top command: Display a continuously updated profile of 586470930SIngo Molnar * any workload, CPU or specific PID. 686470930SIngo Molnar * 786470930SIngo Molnar * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com> 886470930SIngo Molnar * 986470930SIngo Molnar * Improvements and fixes by: 1086470930SIngo Molnar * 1186470930SIngo Molnar * Arjan van de Ven <arjan@linux.intel.com> 1286470930SIngo Molnar * Yanmin Zhang <yanmin.zhang@intel.com> 1386470930SIngo Molnar * Wu Fengguang <fengguang.wu@intel.com> 1486470930SIngo Molnar * Mike Galbraith <efault@gmx.de> 1586470930SIngo Molnar * Paul Mackerras <paulus@samba.org> 1686470930SIngo Molnar * 1786470930SIngo Molnar * Released under the GPL v2. (and only v2, not any later version) 1886470930SIngo Molnar */ 1986470930SIngo Molnar #include "builtin.h" 2086470930SIngo Molnar 2186470930SIngo Molnar #include "perf.h" 2286470930SIngo Molnar 2386470930SIngo Molnar #include "util/color.h" 24b3165f41SArnaldo Carvalho de Melo #include "util/session.h" 25b3165f41SArnaldo Carvalho de Melo #include "util/symbol.h" 26439d473bSArnaldo Carvalho de Melo #include "util/thread.h" 2786470930SIngo Molnar #include "util/util.h" 2843cbcd8aSArnaldo Carvalho de Melo #include <linux/rbtree.h> 2986470930SIngo Molnar #include "util/parse-options.h" 3086470930SIngo Molnar #include "util/parse-events.h" 3186470930SIngo Molnar 328f28827aSFrederic Weisbecker #include "util/debug.h" 338f28827aSFrederic Weisbecker 3486470930SIngo Molnar #include <assert.h> 3586470930SIngo Molnar #include <fcntl.h> 3686470930SIngo Molnar 3786470930SIngo Molnar #include <stdio.h> 38923c42c1SMike Galbraith #include <termios.h> 39923c42c1SMike Galbraith #include <unistd.h> 4086470930SIngo Molnar 4186470930SIngo Molnar #include <errno.h> 4286470930SIngo Molnar #include <time.h> 4386470930SIngo Molnar #include <sched.h> 4486470930SIngo Molnar #include <pthread.h> 4586470930SIngo Molnar 4686470930SIngo Molnar #include <sys/syscall.h> 4786470930SIngo Molnar #include <sys/ioctl.h> 4886470930SIngo Molnar #include <sys/poll.h> 4986470930SIngo Molnar #include <sys/prctl.h> 5086470930SIngo Molnar #include <sys/wait.h> 5186470930SIngo Molnar #include <sys/uio.h> 5286470930SIngo Molnar #include <sys/mman.h> 5386470930SIngo Molnar 5486470930SIngo Molnar #include <linux/unistd.h> 5586470930SIngo Molnar #include <linux/types.h> 5686470930SIngo Molnar 5786470930SIngo Molnar static int fd[MAX_NR_CPUS][MAX_COUNTERS]; 5886470930SIngo Molnar 5986470930SIngo Molnar static int system_wide = 0; 6086470930SIngo Molnar 617e4ff9e3SMike Galbraith static int default_interval = 0; 6286470930SIngo Molnar 63923c42c1SMike Galbraith static int count_filter = 5; 643b6ed988SArnaldo Carvalho de Melo static int print_entries; 6586470930SIngo Molnar 6686470930SIngo Molnar static int target_pid = -1; 670fdc7e67SMike Galbraith static int inherit = 0; 6886470930SIngo Molnar static int profile_cpu = -1; 6986470930SIngo Molnar static int nr_cpus = 0; 7086470930SIngo Molnar static unsigned int realtime_prio = 0; 7186470930SIngo Molnar static int group = 0; 7286470930SIngo Molnar static unsigned int page_size; 7386470930SIngo Molnar static unsigned int mmap_pages = 16; 7442e59d7dSIngo Molnar static int freq = 1000; /* 1 KHz */ 7586470930SIngo Molnar 7686470930SIngo Molnar static int delay_secs = 2; 7742e59d7dSIngo Molnar static int zero = 0; 7842e59d7dSIngo Molnar static int dump_symtab = 0; 7986470930SIngo Molnar 808ffcda17SArnaldo Carvalho de Melo static bool hide_kernel_symbols = false; 818ffcda17SArnaldo Carvalho de Melo static bool hide_user_symbols = false; 8213cc5079SArnaldo Carvalho de Melo static struct winsize winsize; 838ffcda17SArnaldo Carvalho de Melo 8486470930SIngo Molnar /* 85923c42c1SMike Galbraith * Source 86923c42c1SMike Galbraith */ 87923c42c1SMike Galbraith 88923c42c1SMike Galbraith struct source_line { 89923c42c1SMike Galbraith u64 eip; 90923c42c1SMike Galbraith unsigned long count[MAX_COUNTERS]; 91923c42c1SMike Galbraith char *line; 92923c42c1SMike Galbraith struct source_line *next; 93923c42c1SMike Galbraith }; 94923c42c1SMike Galbraith 95923c42c1SMike Galbraith static char *sym_filter = NULL; 96923c42c1SMike Galbraith struct sym_entry *sym_filter_entry = NULL; 976cff0e8dSKirill Smelkov struct sym_entry *sym_filter_entry_sched = NULL; 98923c42c1SMike Galbraith static int sym_pcnt_filter = 5; 99923c42c1SMike Galbraith static int sym_counter = 0; 10046ab9764SMike Galbraith static int display_weighted = -1; 101923c42c1SMike Galbraith 102923c42c1SMike Galbraith /* 10386470930SIngo Molnar * Symbols 10486470930SIngo Molnar */ 10586470930SIngo Molnar 106b269876cSArnaldo Carvalho de Melo struct sym_entry_source { 107b269876cSArnaldo Carvalho de Melo struct source_line *source; 108b269876cSArnaldo Carvalho de Melo struct source_line *lines; 109b269876cSArnaldo Carvalho de Melo struct source_line **lines_tail; 110b269876cSArnaldo Carvalho de Melo pthread_mutex_t lock; 111b269876cSArnaldo Carvalho de Melo }; 112b269876cSArnaldo Carvalho de Melo 11386470930SIngo Molnar struct sym_entry { 11486470930SIngo Molnar struct rb_node rb_node; 11586470930SIngo Molnar struct list_head node; 11686470930SIngo Molnar unsigned long snap_count; 11786470930SIngo Molnar double weight; 11886470930SIngo Molnar int skip; 11913cc5079SArnaldo Carvalho de Melo u16 name_len; 1208ffcda17SArnaldo Carvalho de Melo u8 origin; 121439d473bSArnaldo Carvalho de Melo struct map *map; 122b269876cSArnaldo Carvalho de Melo struct sym_entry_source *src; 1235a8e5a30SArnaldo Carvalho de Melo unsigned long count[0]; 12486470930SIngo Molnar }; 12586470930SIngo Molnar 126923c42c1SMike Galbraith /* 127923c42c1SMike Galbraith * Source functions 128923c42c1SMike Galbraith */ 129923c42c1SMike Galbraith 13051a472deSArnaldo Carvalho de Melo static inline struct symbol *sym_entry__symbol(struct sym_entry *self) 13151a472deSArnaldo Carvalho de Melo { 132b32d133aSArnaldo Carvalho de Melo return ((void *)self) + symbol_conf.priv_size; 13351a472deSArnaldo Carvalho de Melo } 13451a472deSArnaldo Carvalho de Melo 13513cc5079SArnaldo Carvalho de Melo static void get_term_dimensions(struct winsize *ws) 1363b6ed988SArnaldo Carvalho de Melo { 13713cc5079SArnaldo Carvalho de Melo char *s = getenv("LINES"); 1383b6ed988SArnaldo Carvalho de Melo 13913cc5079SArnaldo Carvalho de Melo if (s != NULL) { 14013cc5079SArnaldo Carvalho de Melo ws->ws_row = atoi(s); 14113cc5079SArnaldo Carvalho de Melo s = getenv("COLUMNS"); 14213cc5079SArnaldo Carvalho de Melo if (s != NULL) { 14313cc5079SArnaldo Carvalho de Melo ws->ws_col = atoi(s); 14413cc5079SArnaldo Carvalho de Melo if (ws->ws_row && ws->ws_col) 14513cc5079SArnaldo Carvalho de Melo return; 14613cc5079SArnaldo Carvalho de Melo } 14713cc5079SArnaldo Carvalho de Melo } 1483b6ed988SArnaldo Carvalho de Melo #ifdef TIOCGWINSZ 14913cc5079SArnaldo Carvalho de Melo if (ioctl(1, TIOCGWINSZ, ws) == 0 && 15013cc5079SArnaldo Carvalho de Melo ws->ws_row && ws->ws_col) 15113cc5079SArnaldo Carvalho de Melo return; 1523b6ed988SArnaldo Carvalho de Melo #endif 15313cc5079SArnaldo Carvalho de Melo ws->ws_row = 25; 15413cc5079SArnaldo Carvalho de Melo ws->ws_col = 80; 1553b6ed988SArnaldo Carvalho de Melo } 1563b6ed988SArnaldo Carvalho de Melo 15713cc5079SArnaldo Carvalho de Melo static void update_print_entries(struct winsize *ws) 1583b6ed988SArnaldo Carvalho de Melo { 15913cc5079SArnaldo Carvalho de Melo print_entries = ws->ws_row; 16013cc5079SArnaldo Carvalho de Melo 1613b6ed988SArnaldo Carvalho de Melo if (print_entries > 9) 1623b6ed988SArnaldo Carvalho de Melo print_entries -= 9; 1633b6ed988SArnaldo Carvalho de Melo } 1643b6ed988SArnaldo Carvalho de Melo 1653b6ed988SArnaldo Carvalho de Melo static void sig_winch_handler(int sig __used) 1663b6ed988SArnaldo Carvalho de Melo { 16713cc5079SArnaldo Carvalho de Melo get_term_dimensions(&winsize); 16813cc5079SArnaldo Carvalho de Melo update_print_entries(&winsize); 1693b6ed988SArnaldo Carvalho de Melo } 1703b6ed988SArnaldo Carvalho de Melo 171923c42c1SMike Galbraith static void parse_source(struct sym_entry *syme) 172923c42c1SMike Galbraith { 173923c42c1SMike Galbraith struct symbol *sym; 174b269876cSArnaldo Carvalho de Melo struct sym_entry_source *source; 175439d473bSArnaldo Carvalho de Melo struct map *map; 176923c42c1SMike Galbraith FILE *file; 17783a0944fSIngo Molnar char command[PATH_MAX*2]; 178439d473bSArnaldo Carvalho de Melo const char *path; 179439d473bSArnaldo Carvalho de Melo u64 len; 180923c42c1SMike Galbraith 181923c42c1SMike Galbraith if (!syme) 182923c42c1SMike Galbraith return; 183923c42c1SMike Galbraith 184b269876cSArnaldo Carvalho de Melo if (syme->src == NULL) { 18536479484SArnaldo Carvalho de Melo syme->src = zalloc(sizeof(*source)); 186b269876cSArnaldo Carvalho de Melo if (syme->src == NULL) 187b269876cSArnaldo Carvalho de Melo return; 188b269876cSArnaldo Carvalho de Melo pthread_mutex_init(&syme->src->lock, NULL); 189b269876cSArnaldo Carvalho de Melo } 190b269876cSArnaldo Carvalho de Melo 191b269876cSArnaldo Carvalho de Melo source = syme->src; 192b269876cSArnaldo Carvalho de Melo 193b269876cSArnaldo Carvalho de Melo if (source->lines) { 194b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&source->lock); 195923c42c1SMike Galbraith goto out_assign; 196923c42c1SMike Galbraith } 197923c42c1SMike Galbraith 19851a472deSArnaldo Carvalho de Melo sym = sym_entry__symbol(syme); 199439d473bSArnaldo Carvalho de Melo map = syme->map; 200439d473bSArnaldo Carvalho de Melo path = map->dso->long_name; 201923c42c1SMike Galbraith 202923c42c1SMike Galbraith len = sym->end - sym->start; 203923c42c1SMike Galbraith 204439d473bSArnaldo Carvalho de Melo sprintf(command, 2055f485364SArnaldo Carvalho de Melo "objdump --start-address=%#0*Lx --stop-address=%#0*Lx -dS %s", 2065f485364SArnaldo Carvalho de Melo BITS_PER_LONG / 4, map__rip_2objdump(map, sym->start), 2075f485364SArnaldo Carvalho de Melo BITS_PER_LONG / 4, map__rip_2objdump(map, sym->end), path); 208923c42c1SMike Galbraith 209923c42c1SMike Galbraith file = popen(command, "r"); 210923c42c1SMike Galbraith if (!file) 211923c42c1SMike Galbraith return; 212923c42c1SMike Galbraith 213b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&source->lock); 214b269876cSArnaldo Carvalho de Melo source->lines_tail = &source->lines; 215923c42c1SMike Galbraith while (!feof(file)) { 216923c42c1SMike Galbraith struct source_line *src; 217923c42c1SMike Galbraith size_t dummy = 0; 218ee11b90bSKirill Smelkov char *c, *sep; 219923c42c1SMike Galbraith 220923c42c1SMike Galbraith src = malloc(sizeof(struct source_line)); 221923c42c1SMike Galbraith assert(src != NULL); 222923c42c1SMike Galbraith memset(src, 0, sizeof(struct source_line)); 223923c42c1SMike Galbraith 224923c42c1SMike Galbraith if (getline(&src->line, &dummy, file) < 0) 225923c42c1SMike Galbraith break; 226923c42c1SMike Galbraith if (!src->line) 227923c42c1SMike Galbraith break; 228923c42c1SMike Galbraith 229923c42c1SMike Galbraith c = strchr(src->line, '\n'); 230923c42c1SMike Galbraith if (c) 231923c42c1SMike Galbraith *c = 0; 232923c42c1SMike Galbraith 233923c42c1SMike Galbraith src->next = NULL; 234b269876cSArnaldo Carvalho de Melo *source->lines_tail = src; 235b269876cSArnaldo Carvalho de Melo source->lines_tail = &src->next; 236923c42c1SMike Galbraith 237ee11b90bSKirill Smelkov src->eip = strtoull(src->line, &sep, 16); 238ee11b90bSKirill Smelkov if (*sep == ':') 239ee11b90bSKirill Smelkov src->eip = map__objdump_2ip(map, src->eip); 240ee11b90bSKirill Smelkov else /* this line has no ip info (e.g. source line) */ 241ee11b90bSKirill Smelkov src->eip = 0; 242923c42c1SMike Galbraith } 243923c42c1SMike Galbraith pclose(file); 244923c42c1SMike Galbraith out_assign: 245923c42c1SMike Galbraith sym_filter_entry = syme; 246b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&source->lock); 247923c42c1SMike Galbraith } 248923c42c1SMike Galbraith 249923c42c1SMike Galbraith static void __zero_source_counters(struct sym_entry *syme) 250923c42c1SMike Galbraith { 251923c42c1SMike Galbraith int i; 252923c42c1SMike Galbraith struct source_line *line; 253923c42c1SMike Galbraith 254b269876cSArnaldo Carvalho de Melo line = syme->src->lines; 255923c42c1SMike Galbraith while (line) { 256923c42c1SMike Galbraith for (i = 0; i < nr_counters; i++) 257923c42c1SMike Galbraith line->count[i] = 0; 258923c42c1SMike Galbraith line = line->next; 259923c42c1SMike Galbraith } 260923c42c1SMike Galbraith } 261923c42c1SMike Galbraith 262923c42c1SMike Galbraith static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) 263923c42c1SMike Galbraith { 264923c42c1SMike Galbraith struct source_line *line; 265923c42c1SMike Galbraith 266923c42c1SMike Galbraith if (syme != sym_filter_entry) 267923c42c1SMike Galbraith return; 268923c42c1SMike Galbraith 269b269876cSArnaldo Carvalho de Melo if (pthread_mutex_trylock(&syme->src->lock)) 270923c42c1SMike Galbraith return; 271923c42c1SMike Galbraith 272b269876cSArnaldo Carvalho de Melo if (syme->src == NULL || syme->src->source == NULL) 273923c42c1SMike Galbraith goto out_unlock; 274923c42c1SMike Galbraith 275b269876cSArnaldo Carvalho de Melo for (line = syme->src->lines; line; line = line->next) { 276ee11b90bSKirill Smelkov /* skip lines without IP info */ 277ee11b90bSKirill Smelkov if (line->eip == 0) 278ee11b90bSKirill Smelkov continue; 279923c42c1SMike Galbraith if (line->eip == ip) { 280923c42c1SMike Galbraith line->count[counter]++; 281923c42c1SMike Galbraith break; 282923c42c1SMike Galbraith } 283923c42c1SMike Galbraith if (line->eip > ip) 284923c42c1SMike Galbraith break; 285923c42c1SMike Galbraith } 286923c42c1SMike Galbraith out_unlock: 287b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 288923c42c1SMike Galbraith } 289923c42c1SMike Galbraith 290923c42c1SMike Galbraith static void lookup_sym_source(struct sym_entry *syme) 291923c42c1SMike Galbraith { 29251a472deSArnaldo Carvalho de Melo struct symbol *symbol = sym_entry__symbol(syme); 293923c42c1SMike Galbraith struct source_line *line; 2945f485364SArnaldo Carvalho de Melo const size_t pattern_len = BITS_PER_LONG / 4 + 2; 2955f485364SArnaldo Carvalho de Melo char pattern[pattern_len + 1]; 296923c42c1SMike Galbraith 2975f485364SArnaldo Carvalho de Melo sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4, 2985f485364SArnaldo Carvalho de Melo map__rip_2objdump(syme->map, symbol->start)); 299923c42c1SMike Galbraith 300b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 301b269876cSArnaldo Carvalho de Melo for (line = syme->src->lines; line; line = line->next) { 3025f485364SArnaldo Carvalho de Melo if (memcmp(line->line, pattern, pattern_len) == 0) { 303b269876cSArnaldo Carvalho de Melo syme->src->source = line; 304923c42c1SMike Galbraith break; 305923c42c1SMike Galbraith } 306923c42c1SMike Galbraith } 307b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 308923c42c1SMike Galbraith } 309923c42c1SMike Galbraith 310923c42c1SMike Galbraith static void show_lines(struct source_line *queue, int count, int total) 311923c42c1SMike Galbraith { 312923c42c1SMike Galbraith int i; 313923c42c1SMike Galbraith struct source_line *line; 314923c42c1SMike Galbraith 315923c42c1SMike Galbraith line = queue; 316923c42c1SMike Galbraith for (i = 0; i < count; i++) { 317923c42c1SMike Galbraith float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; 318923c42c1SMike Galbraith 319923c42c1SMike Galbraith printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); 320923c42c1SMike Galbraith line = line->next; 321923c42c1SMike Galbraith } 322923c42c1SMike Galbraith } 323923c42c1SMike Galbraith 324923c42c1SMike Galbraith #define TRACE_COUNT 3 325923c42c1SMike Galbraith 326923c42c1SMike Galbraith static void show_details(struct sym_entry *syme) 327923c42c1SMike Galbraith { 328923c42c1SMike Galbraith struct symbol *symbol; 329923c42c1SMike Galbraith struct source_line *line; 330923c42c1SMike Galbraith struct source_line *line_queue = NULL; 331923c42c1SMike Galbraith int displayed = 0; 332923c42c1SMike Galbraith int line_queue_count = 0, total = 0, more = 0; 333923c42c1SMike Galbraith 334923c42c1SMike Galbraith if (!syme) 335923c42c1SMike Galbraith return; 336923c42c1SMike Galbraith 337b269876cSArnaldo Carvalho de Melo if (!syme->src->source) 338923c42c1SMike Galbraith lookup_sym_source(syme); 339923c42c1SMike Galbraith 340b269876cSArnaldo Carvalho de Melo if (!syme->src->source) 341923c42c1SMike Galbraith return; 342923c42c1SMike Galbraith 34351a472deSArnaldo Carvalho de Melo symbol = sym_entry__symbol(syme); 344923c42c1SMike Galbraith printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); 345923c42c1SMike Galbraith printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); 346923c42c1SMike Galbraith 347b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 348b269876cSArnaldo Carvalho de Melo line = syme->src->source; 349923c42c1SMike Galbraith while (line) { 350923c42c1SMike Galbraith total += line->count[sym_counter]; 351923c42c1SMike Galbraith line = line->next; 352923c42c1SMike Galbraith } 353923c42c1SMike Galbraith 354b269876cSArnaldo Carvalho de Melo line = syme->src->source; 355923c42c1SMike Galbraith while (line) { 356923c42c1SMike Galbraith float pcnt = 0.0; 357923c42c1SMike Galbraith 358923c42c1SMike Galbraith if (!line_queue_count) 359923c42c1SMike Galbraith line_queue = line; 360923c42c1SMike Galbraith line_queue_count++; 361923c42c1SMike Galbraith 362923c42c1SMike Galbraith if (line->count[sym_counter]) 363923c42c1SMike Galbraith pcnt = 100.0 * line->count[sym_counter] / (float)total; 364923c42c1SMike Galbraith if (pcnt >= (float)sym_pcnt_filter) { 365923c42c1SMike Galbraith if (displayed <= print_entries) 366923c42c1SMike Galbraith show_lines(line_queue, line_queue_count, total); 367923c42c1SMike Galbraith else more++; 368923c42c1SMike Galbraith displayed += line_queue_count; 369923c42c1SMike Galbraith line_queue_count = 0; 370923c42c1SMike Galbraith line_queue = NULL; 371923c42c1SMike Galbraith } else if (line_queue_count > TRACE_COUNT) { 372923c42c1SMike Galbraith line_queue = line_queue->next; 373923c42c1SMike Galbraith line_queue_count--; 374923c42c1SMike Galbraith } 375923c42c1SMike Galbraith 376923c42c1SMike Galbraith line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; 377923c42c1SMike Galbraith line = line->next; 378923c42c1SMike Galbraith } 379b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 380923c42c1SMike Galbraith if (more) 381923c42c1SMike Galbraith printf("%d lines not displayed, maybe increase display entries [e]\n", more); 382923c42c1SMike Galbraith } 38386470930SIngo Molnar 38486470930SIngo Molnar /* 3855b2bb75aSArnaldo Carvalho de Melo * Symbols will be added here in event__process_sample and will get out 38686470930SIngo Molnar * after decayed. 38786470930SIngo Molnar */ 38886470930SIngo Molnar static LIST_HEAD(active_symbols); 38986470930SIngo Molnar static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; 39086470930SIngo Molnar 39186470930SIngo Molnar /* 39286470930SIngo Molnar * Ordering weight: count-1 * count-2 * ... / count-n 39386470930SIngo Molnar */ 39486470930SIngo Molnar static double sym_weight(const struct sym_entry *sym) 39586470930SIngo Molnar { 39686470930SIngo Molnar double weight = sym->snap_count; 39786470930SIngo Molnar int counter; 39886470930SIngo Molnar 39946ab9764SMike Galbraith if (!display_weighted) 40046ab9764SMike Galbraith return weight; 40146ab9764SMike Galbraith 40286470930SIngo Molnar for (counter = 1; counter < nr_counters-1; counter++) 40386470930SIngo Molnar weight *= sym->count[counter]; 40486470930SIngo Molnar 40586470930SIngo Molnar weight /= (sym->count[counter] + 1); 40686470930SIngo Molnar 40786470930SIngo Molnar return weight; 40886470930SIngo Molnar } 40986470930SIngo Molnar 41086470930SIngo Molnar static long samples; 41186470930SIngo Molnar static long userspace_samples; 41286470930SIngo Molnar static const char CONSOLE_CLEAR[] = "[H[2J"; 41386470930SIngo Molnar 41486470930SIngo Molnar static void __list_insert_active_sym(struct sym_entry *syme) 41586470930SIngo Molnar { 41686470930SIngo Molnar list_add(&syme->node, &active_symbols); 41786470930SIngo Molnar } 41886470930SIngo Molnar 41986470930SIngo Molnar static void list_remove_active_sym(struct sym_entry *syme) 42086470930SIngo Molnar { 42186470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 42286470930SIngo Molnar list_del_init(&syme->node); 42386470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 42486470930SIngo Molnar } 42586470930SIngo Molnar 42686470930SIngo Molnar static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) 42786470930SIngo Molnar { 42886470930SIngo Molnar struct rb_node **p = &tree->rb_node; 42986470930SIngo Molnar struct rb_node *parent = NULL; 43086470930SIngo Molnar struct sym_entry *iter; 43186470930SIngo Molnar 43286470930SIngo Molnar while (*p != NULL) { 43386470930SIngo Molnar parent = *p; 43486470930SIngo Molnar iter = rb_entry(parent, struct sym_entry, rb_node); 43586470930SIngo Molnar 43686470930SIngo Molnar if (se->weight > iter->weight) 43786470930SIngo Molnar p = &(*p)->rb_left; 43886470930SIngo Molnar else 43986470930SIngo Molnar p = &(*p)->rb_right; 44086470930SIngo Molnar } 44186470930SIngo Molnar 44286470930SIngo Molnar rb_link_node(&se->rb_node, parent, p); 44386470930SIngo Molnar rb_insert_color(&se->rb_node, tree); 44486470930SIngo Molnar } 44586470930SIngo Molnar 44686470930SIngo Molnar static void print_sym_table(void) 44786470930SIngo Molnar { 44886470930SIngo Molnar int printed = 0, j; 44946ab9764SMike Galbraith int counter, snap = !display_weighted ? sym_counter : 0; 45086470930SIngo Molnar float samples_per_sec = samples/delay_secs; 45186470930SIngo Molnar float ksamples_per_sec = (samples-userspace_samples)/delay_secs; 45286470930SIngo Molnar float sum_ksamples = 0.0; 45386470930SIngo Molnar struct sym_entry *syme, *n; 45486470930SIngo Molnar struct rb_root tmp = RB_ROOT; 45586470930SIngo Molnar struct rb_node *nd; 4567cc017edSArnaldo Carvalho de Melo int sym_width = 0, dso_width = 0, max_dso_width; 45713cc5079SArnaldo Carvalho de Melo const int win_width = winsize.ws_col - 1; 45886470930SIngo Molnar 45986470930SIngo Molnar samples = userspace_samples = 0; 46086470930SIngo Molnar 46186470930SIngo Molnar /* Sort the active symbols */ 46286470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 46386470930SIngo Molnar syme = list_entry(active_symbols.next, struct sym_entry, node); 46486470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 46586470930SIngo Molnar 46686470930SIngo Molnar list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 46746ab9764SMike Galbraith syme->snap_count = syme->count[snap]; 46886470930SIngo Molnar if (syme->snap_count != 0) { 46913cc5079SArnaldo Carvalho de Melo 4708ffcda17SArnaldo Carvalho de Melo if ((hide_user_symbols && 4718ffcda17SArnaldo Carvalho de Melo syme->origin == PERF_RECORD_MISC_USER) || 4728ffcda17SArnaldo Carvalho de Melo (hide_kernel_symbols && 4738ffcda17SArnaldo Carvalho de Melo syme->origin == PERF_RECORD_MISC_KERNEL)) { 4748ffcda17SArnaldo Carvalho de Melo list_remove_active_sym(syme); 4758ffcda17SArnaldo Carvalho de Melo continue; 4768ffcda17SArnaldo Carvalho de Melo } 47786470930SIngo Molnar syme->weight = sym_weight(syme); 47886470930SIngo Molnar rb_insert_active_sym(&tmp, syme); 47986470930SIngo Molnar sum_ksamples += syme->snap_count; 48086470930SIngo Molnar 48186470930SIngo Molnar for (j = 0; j < nr_counters; j++) 48286470930SIngo Molnar syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; 48386470930SIngo Molnar } else 48486470930SIngo Molnar list_remove_active_sym(syme); 48586470930SIngo Molnar } 48686470930SIngo Molnar 48786470930SIngo Molnar puts(CONSOLE_CLEAR); 48886470930SIngo Molnar 48913cc5079SArnaldo Carvalho de Melo printf("%-*.*s\n", win_width, win_width, graph_dotted_line); 49086470930SIngo Molnar printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", 49186470930SIngo Molnar samples_per_sec, 49286470930SIngo Molnar 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); 49386470930SIngo Molnar 49446ab9764SMike Galbraith if (nr_counters == 1 || !display_weighted) { 4959cffa8d5SPaul Mackerras printf("%Ld", (u64)attrs[0].sample_period); 49686470930SIngo Molnar if (freq) 49786470930SIngo Molnar printf("Hz "); 49886470930SIngo Molnar else 49986470930SIngo Molnar printf(" "); 50086470930SIngo Molnar } 50186470930SIngo Molnar 50246ab9764SMike Galbraith if (!display_weighted) 50346ab9764SMike Galbraith printf("%s", event_name(sym_counter)); 50446ab9764SMike Galbraith else for (counter = 0; counter < nr_counters; counter++) { 50586470930SIngo Molnar if (counter) 50686470930SIngo Molnar printf("/"); 50786470930SIngo Molnar 50886470930SIngo Molnar printf("%s", event_name(counter)); 50986470930SIngo Molnar } 51086470930SIngo Molnar 51186470930SIngo Molnar printf( "], "); 51286470930SIngo Molnar 51386470930SIngo Molnar if (target_pid != -1) 51486470930SIngo Molnar printf(" (target_pid: %d", target_pid); 51586470930SIngo Molnar else 51686470930SIngo Molnar printf(" (all"); 51786470930SIngo Molnar 51886470930SIngo Molnar if (profile_cpu != -1) 51986470930SIngo Molnar printf(", cpu: %d)\n", profile_cpu); 52086470930SIngo Molnar else { 52186470930SIngo Molnar if (target_pid != -1) 52286470930SIngo Molnar printf(")\n"); 52386470930SIngo Molnar else 52486470930SIngo Molnar printf(", %d CPUs)\n", nr_cpus); 52586470930SIngo Molnar } 52686470930SIngo Molnar 5271a105f74SArnaldo Carvalho de Melo printf("%-*.*s\n", win_width, win_width, graph_dotted_line); 52886470930SIngo Molnar 529923c42c1SMike Galbraith if (sym_filter_entry) { 530923c42c1SMike Galbraith show_details(sym_filter_entry); 531923c42c1SMike Galbraith return; 532923c42c1SMike Galbraith } 533923c42c1SMike Galbraith 53413cc5079SArnaldo Carvalho de Melo /* 53513cc5079SArnaldo Carvalho de Melo * Find the longest symbol name that will be displayed 53613cc5079SArnaldo Carvalho de Melo */ 53713cc5079SArnaldo Carvalho de Melo for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 53813cc5079SArnaldo Carvalho de Melo syme = rb_entry(nd, struct sym_entry, rb_node); 53913cc5079SArnaldo Carvalho de Melo if (++printed > print_entries || 54013cc5079SArnaldo Carvalho de Melo (int)syme->snap_count < count_filter) 54113cc5079SArnaldo Carvalho de Melo continue; 54213cc5079SArnaldo Carvalho de Melo 5431a105f74SArnaldo Carvalho de Melo if (syme->map->dso->long_name_len > dso_width) 5441a105f74SArnaldo Carvalho de Melo dso_width = syme->map->dso->long_name_len; 5451a105f74SArnaldo Carvalho de Melo 54613cc5079SArnaldo Carvalho de Melo if (syme->name_len > sym_width) 54713cc5079SArnaldo Carvalho de Melo sym_width = syme->name_len; 54813cc5079SArnaldo Carvalho de Melo } 54913cc5079SArnaldo Carvalho de Melo 55013cc5079SArnaldo Carvalho de Melo printed = 0; 55113cc5079SArnaldo Carvalho de Melo 5527cc017edSArnaldo Carvalho de Melo max_dso_width = winsize.ws_col - sym_width - 29; 5531a105f74SArnaldo Carvalho de Melo if (dso_width > max_dso_width) 5541a105f74SArnaldo Carvalho de Melo dso_width = max_dso_width; 5551a105f74SArnaldo Carvalho de Melo putchar('\n'); 55686470930SIngo Molnar if (nr_counters == 1) 55786470930SIngo Molnar printf(" samples pcnt"); 55886470930SIngo Molnar else 55986470930SIngo Molnar printf(" weight samples pcnt"); 56086470930SIngo Molnar 5617ced156bSArnaldo Carvalho de Melo if (verbose) 5627ced156bSArnaldo Carvalho de Melo printf(" RIP "); 5637cc017edSArnaldo Carvalho de Melo printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); 5647ced156bSArnaldo Carvalho de Melo printf(" %s _______ _____", 5657ced156bSArnaldo Carvalho de Melo nr_counters == 1 ? " " : "______"); 5667ced156bSArnaldo Carvalho de Melo if (verbose) 5677ced156bSArnaldo Carvalho de Melo printf(" ________________"); 5681a105f74SArnaldo Carvalho de Melo printf(" %-*.*s", sym_width, sym_width, graph_line); 5691a105f74SArnaldo Carvalho de Melo printf(" %-*.*s", dso_width, dso_width, graph_line); 5701a105f74SArnaldo Carvalho de Melo puts("\n"); 57186470930SIngo Molnar 57286470930SIngo Molnar for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 57383a0944fSIngo Molnar struct symbol *sym; 57486470930SIngo Molnar double pcnt; 57586470930SIngo Molnar 57683a0944fSIngo Molnar syme = rb_entry(nd, struct sym_entry, rb_node); 57751a472deSArnaldo Carvalho de Melo sym = sym_entry__symbol(syme); 57883a0944fSIngo Molnar 579923c42c1SMike Galbraith if (++printed > print_entries || (int)syme->snap_count < count_filter) 58086470930SIngo Molnar continue; 58186470930SIngo Molnar 58286470930SIngo Molnar pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / 58386470930SIngo Molnar sum_ksamples)); 58486470930SIngo Molnar 58546ab9764SMike Galbraith if (nr_counters == 1 || !display_weighted) 5865b2bb75aSArnaldo Carvalho de Melo printf("%20.2f ", syme->weight); 58786470930SIngo Molnar else 5885b2bb75aSArnaldo Carvalho de Melo printf("%9.1f %10ld ", syme->weight, syme->snap_count); 58986470930SIngo Molnar 5901e11fd82SFrederic Weisbecker percent_color_fprintf(stdout, "%4.1f%%", pcnt); 5917ced156bSArnaldo Carvalho de Melo if (verbose) 5925b2bb75aSArnaldo Carvalho de Melo printf(" %016llx", sym->start); 59313cc5079SArnaldo Carvalho de Melo printf(" %-*.*s", sym_width, sym_width, sym->name); 5947cc017edSArnaldo Carvalho de Melo printf(" %-*.*s\n", dso_width, dso_width, 59513cc5079SArnaldo Carvalho de Melo dso_width >= syme->map->dso->long_name_len ? 59613cc5079SArnaldo Carvalho de Melo syme->map->dso->long_name : 59713cc5079SArnaldo Carvalho de Melo syme->map->dso->short_name); 59886470930SIngo Molnar } 59986470930SIngo Molnar } 60086470930SIngo Molnar 601923c42c1SMike Galbraith static void prompt_integer(int *target, const char *msg) 602923c42c1SMike Galbraith { 603923c42c1SMike Galbraith char *buf = malloc(0), *p; 604923c42c1SMike Galbraith size_t dummy = 0; 605923c42c1SMike Galbraith int tmp; 606923c42c1SMike Galbraith 607923c42c1SMike Galbraith fprintf(stdout, "\n%s: ", msg); 608923c42c1SMike Galbraith if (getline(&buf, &dummy, stdin) < 0) 609923c42c1SMike Galbraith return; 610923c42c1SMike Galbraith 611923c42c1SMike Galbraith p = strchr(buf, '\n'); 612923c42c1SMike Galbraith if (p) 613923c42c1SMike Galbraith *p = 0; 614923c42c1SMike Galbraith 615923c42c1SMike Galbraith p = buf; 616923c42c1SMike Galbraith while(*p) { 617923c42c1SMike Galbraith if (!isdigit(*p)) 618923c42c1SMike Galbraith goto out_free; 619923c42c1SMike Galbraith p++; 620923c42c1SMike Galbraith } 621923c42c1SMike Galbraith tmp = strtoul(buf, NULL, 10); 622923c42c1SMike Galbraith *target = tmp; 623923c42c1SMike Galbraith out_free: 624923c42c1SMike Galbraith free(buf); 625923c42c1SMike Galbraith } 626923c42c1SMike Galbraith 627923c42c1SMike Galbraith static void prompt_percent(int *target, const char *msg) 628923c42c1SMike Galbraith { 629923c42c1SMike Galbraith int tmp = 0; 630923c42c1SMike Galbraith 631923c42c1SMike Galbraith prompt_integer(&tmp, msg); 632923c42c1SMike Galbraith if (tmp >= 0 && tmp <= 100) 633923c42c1SMike Galbraith *target = tmp; 634923c42c1SMike Galbraith } 635923c42c1SMike Galbraith 636923c42c1SMike Galbraith static void prompt_symbol(struct sym_entry **target, const char *msg) 637923c42c1SMike Galbraith { 638923c42c1SMike Galbraith char *buf = malloc(0), *p; 639923c42c1SMike Galbraith struct sym_entry *syme = *target, *n, *found = NULL; 640923c42c1SMike Galbraith size_t dummy = 0; 641923c42c1SMike Galbraith 642923c42c1SMike Galbraith /* zero counters of active symbol */ 643923c42c1SMike Galbraith if (syme) { 644b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 645923c42c1SMike Galbraith __zero_source_counters(syme); 646923c42c1SMike Galbraith *target = NULL; 647b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 648923c42c1SMike Galbraith } 649923c42c1SMike Galbraith 650923c42c1SMike Galbraith fprintf(stdout, "\n%s: ", msg); 651923c42c1SMike Galbraith if (getline(&buf, &dummy, stdin) < 0) 652923c42c1SMike Galbraith goto out_free; 653923c42c1SMike Galbraith 654923c42c1SMike Galbraith p = strchr(buf, '\n'); 655923c42c1SMike Galbraith if (p) 656923c42c1SMike Galbraith *p = 0; 657923c42c1SMike Galbraith 658923c42c1SMike Galbraith pthread_mutex_lock(&active_symbols_lock); 659923c42c1SMike Galbraith syme = list_entry(active_symbols.next, struct sym_entry, node); 660923c42c1SMike Galbraith pthread_mutex_unlock(&active_symbols_lock); 661923c42c1SMike Galbraith 662923c42c1SMike Galbraith list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 66351a472deSArnaldo Carvalho de Melo struct symbol *sym = sym_entry__symbol(syme); 664923c42c1SMike Galbraith 665923c42c1SMike Galbraith if (!strcmp(buf, sym->name)) { 666923c42c1SMike Galbraith found = syme; 667923c42c1SMike Galbraith break; 668923c42c1SMike Galbraith } 669923c42c1SMike Galbraith } 670923c42c1SMike Galbraith 671923c42c1SMike Galbraith if (!found) { 67266aeb6d5SKirill Smelkov fprintf(stderr, "Sorry, %s is not active.\n", buf); 673923c42c1SMike Galbraith sleep(1); 674923c42c1SMike Galbraith return; 675923c42c1SMike Galbraith } else 676923c42c1SMike Galbraith parse_source(found); 677923c42c1SMike Galbraith 678923c42c1SMike Galbraith out_free: 679923c42c1SMike Galbraith free(buf); 680923c42c1SMike Galbraith } 681923c42c1SMike Galbraith 682091bd2e9SMike Galbraith static void print_mapped_keys(void) 683923c42c1SMike Galbraith { 684091bd2e9SMike Galbraith char *name = NULL; 685091bd2e9SMike Galbraith 686091bd2e9SMike Galbraith if (sym_filter_entry) { 68751a472deSArnaldo Carvalho de Melo struct symbol *sym = sym_entry__symbol(sym_filter_entry); 688091bd2e9SMike Galbraith name = sym->name; 689091bd2e9SMike Galbraith } 690091bd2e9SMike Galbraith 691091bd2e9SMike Galbraith fprintf(stdout, "\nMapped keys:\n"); 692091bd2e9SMike Galbraith fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); 693091bd2e9SMike Galbraith fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); 694091bd2e9SMike Galbraith 695091bd2e9SMike Galbraith if (nr_counters > 1) 69646ab9764SMike Galbraith fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter)); 697091bd2e9SMike Galbraith 698091bd2e9SMike Galbraith fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); 699091bd2e9SMike Galbraith 700091bd2e9SMike Galbraith fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); 701091bd2e9SMike Galbraith fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); 702091bd2e9SMike Galbraith fprintf(stdout, "\t[S] stop annotation.\n"); 703091bd2e9SMike Galbraith 704091bd2e9SMike Galbraith if (nr_counters > 1) 70546ab9764SMike Galbraith fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", display_weighted ? 1 : 0); 706091bd2e9SMike Galbraith 7078ffcda17SArnaldo Carvalho de Melo fprintf(stdout, 7088ffcda17SArnaldo Carvalho de Melo "\t[K] hide kernel_symbols symbols. \t(%s)\n", 7098ffcda17SArnaldo Carvalho de Melo hide_kernel_symbols ? "yes" : "no"); 7108ffcda17SArnaldo Carvalho de Melo fprintf(stdout, 7118ffcda17SArnaldo Carvalho de Melo "\t[U] hide user symbols. \t(%s)\n", 7128ffcda17SArnaldo Carvalho de Melo hide_user_symbols ? "yes" : "no"); 71346ab9764SMike Galbraith fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", zero ? 1 : 0); 714091bd2e9SMike Galbraith fprintf(stdout, "\t[qQ] quit.\n"); 715091bd2e9SMike Galbraith } 716091bd2e9SMike Galbraith 717091bd2e9SMike Galbraith static int key_mapped(int c) 718091bd2e9SMike Galbraith { 719091bd2e9SMike Galbraith switch (c) { 720091bd2e9SMike Galbraith case 'd': 721091bd2e9SMike Galbraith case 'e': 722091bd2e9SMike Galbraith case 'f': 723091bd2e9SMike Galbraith case 'z': 724091bd2e9SMike Galbraith case 'q': 725091bd2e9SMike Galbraith case 'Q': 7268ffcda17SArnaldo Carvalho de Melo case 'K': 7278ffcda17SArnaldo Carvalho de Melo case 'U': 7286cff0e8dSKirill Smelkov case 'F': 7296cff0e8dSKirill Smelkov case 's': 7306cff0e8dSKirill Smelkov case 'S': 731091bd2e9SMike Galbraith return 1; 732091bd2e9SMike Galbraith case 'E': 733091bd2e9SMike Galbraith case 'w': 734091bd2e9SMike Galbraith return nr_counters > 1 ? 1 : 0; 73583a0944fSIngo Molnar default: 73683a0944fSIngo Molnar break; 737091bd2e9SMike Galbraith } 738091bd2e9SMike Galbraith 739091bd2e9SMike Galbraith return 0; 740923c42c1SMike Galbraith } 741923c42c1SMike Galbraith 742923c42c1SMike Galbraith static void handle_keypress(int c) 743923c42c1SMike Galbraith { 744091bd2e9SMike Galbraith if (!key_mapped(c)) { 745091bd2e9SMike Galbraith struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; 746091bd2e9SMike Galbraith struct termios tc, save; 747091bd2e9SMike Galbraith 748091bd2e9SMike Galbraith print_mapped_keys(); 749091bd2e9SMike Galbraith fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); 750091bd2e9SMike Galbraith fflush(stdout); 751091bd2e9SMike Galbraith 752091bd2e9SMike Galbraith tcgetattr(0, &save); 753091bd2e9SMike Galbraith tc = save; 754091bd2e9SMike Galbraith tc.c_lflag &= ~(ICANON | ECHO); 755091bd2e9SMike Galbraith tc.c_cc[VMIN] = 0; 756091bd2e9SMike Galbraith tc.c_cc[VTIME] = 0; 757091bd2e9SMike Galbraith tcsetattr(0, TCSANOW, &tc); 758091bd2e9SMike Galbraith 759091bd2e9SMike Galbraith poll(&stdin_poll, 1, -1); 760091bd2e9SMike Galbraith c = getc(stdin); 761091bd2e9SMike Galbraith 762091bd2e9SMike Galbraith tcsetattr(0, TCSAFLUSH, &save); 763091bd2e9SMike Galbraith if (!key_mapped(c)) 764091bd2e9SMike Galbraith return; 765091bd2e9SMike Galbraith } 766091bd2e9SMike Galbraith 767923c42c1SMike Galbraith switch (c) { 768923c42c1SMike Galbraith case 'd': 769923c42c1SMike Galbraith prompt_integer(&delay_secs, "Enter display delay"); 770dc79959aSTim Blechmann if (delay_secs < 1) 771dc79959aSTim Blechmann delay_secs = 1; 772923c42c1SMike Galbraith break; 773923c42c1SMike Galbraith case 'e': 774923c42c1SMike Galbraith prompt_integer(&print_entries, "Enter display entries (lines)"); 7753b6ed988SArnaldo Carvalho de Melo if (print_entries == 0) { 77613cc5079SArnaldo Carvalho de Melo sig_winch_handler(SIGWINCH); 7773b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, sig_winch_handler); 7783b6ed988SArnaldo Carvalho de Melo } else 7793b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, SIG_DFL); 780923c42c1SMike Galbraith break; 781923c42c1SMike Galbraith case 'E': 782923c42c1SMike Galbraith if (nr_counters > 1) { 783923c42c1SMike Galbraith int i; 784923c42c1SMike Galbraith 785923c42c1SMike Galbraith fprintf(stderr, "\nAvailable events:"); 786923c42c1SMike Galbraith for (i = 0; i < nr_counters; i++) 787923c42c1SMike Galbraith fprintf(stderr, "\n\t%d %s", i, event_name(i)); 788923c42c1SMike Galbraith 789923c42c1SMike Galbraith prompt_integer(&sym_counter, "Enter details event counter"); 790923c42c1SMike Galbraith 791923c42c1SMike Galbraith if (sym_counter >= nr_counters) { 792923c42c1SMike Galbraith fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0)); 793923c42c1SMike Galbraith sym_counter = 0; 794923c42c1SMike Galbraith sleep(1); 795923c42c1SMike Galbraith } 796923c42c1SMike Galbraith } else sym_counter = 0; 797923c42c1SMike Galbraith break; 798923c42c1SMike Galbraith case 'f': 799923c42c1SMike Galbraith prompt_integer(&count_filter, "Enter display event count filter"); 800923c42c1SMike Galbraith break; 801923c42c1SMike Galbraith case 'F': 802923c42c1SMike Galbraith prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); 803923c42c1SMike Galbraith break; 8048ffcda17SArnaldo Carvalho de Melo case 'K': 8058ffcda17SArnaldo Carvalho de Melo hide_kernel_symbols = !hide_kernel_symbols; 8068ffcda17SArnaldo Carvalho de Melo break; 807923c42c1SMike Galbraith case 'q': 808923c42c1SMike Galbraith case 'Q': 809923c42c1SMike Galbraith printf("exiting.\n"); 810c338aee8SArnaldo Carvalho de Melo if (dump_symtab) 811c338aee8SArnaldo Carvalho de Melo dsos__fprintf(stderr); 812923c42c1SMike Galbraith exit(0); 813923c42c1SMike Galbraith case 's': 814923c42c1SMike Galbraith prompt_symbol(&sym_filter_entry, "Enter details symbol"); 815923c42c1SMike Galbraith break; 816923c42c1SMike Galbraith case 'S': 817923c42c1SMike Galbraith if (!sym_filter_entry) 818923c42c1SMike Galbraith break; 819923c42c1SMike Galbraith else { 820923c42c1SMike Galbraith struct sym_entry *syme = sym_filter_entry; 821923c42c1SMike Galbraith 822b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 823923c42c1SMike Galbraith sym_filter_entry = NULL; 824923c42c1SMike Galbraith __zero_source_counters(syme); 825b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 826923c42c1SMike Galbraith } 827923c42c1SMike Galbraith break; 8288ffcda17SArnaldo Carvalho de Melo case 'U': 8298ffcda17SArnaldo Carvalho de Melo hide_user_symbols = !hide_user_symbols; 8308ffcda17SArnaldo Carvalho de Melo break; 83146ab9764SMike Galbraith case 'w': 83246ab9764SMike Galbraith display_weighted = ~display_weighted; 83346ab9764SMike Galbraith break; 834923c42c1SMike Galbraith case 'z': 835923c42c1SMike Galbraith zero = ~zero; 836923c42c1SMike Galbraith break; 83783a0944fSIngo Molnar default: 83883a0944fSIngo Molnar break; 839923c42c1SMike Galbraith } 840923c42c1SMike Galbraith } 841923c42c1SMike Galbraith 842f37a291cSIngo Molnar static void *display_thread(void *arg __used) 84386470930SIngo Molnar { 84486470930SIngo Molnar struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; 845923c42c1SMike Galbraith struct termios tc, save; 846923c42c1SMike Galbraith int delay_msecs, c; 84786470930SIngo Molnar 848923c42c1SMike Galbraith tcgetattr(0, &save); 849923c42c1SMike Galbraith tc = save; 850923c42c1SMike Galbraith tc.c_lflag &= ~(ICANON | ECHO); 851923c42c1SMike Galbraith tc.c_cc[VMIN] = 0; 852923c42c1SMike Galbraith tc.c_cc[VTIME] = 0; 853091bd2e9SMike Galbraith 854923c42c1SMike Galbraith repeat: 855923c42c1SMike Galbraith delay_msecs = delay_secs * 1000; 856923c42c1SMike Galbraith tcsetattr(0, TCSANOW, &tc); 857923c42c1SMike Galbraith /* trash return*/ 858923c42c1SMike Galbraith getc(stdin); 85986470930SIngo Molnar 86086470930SIngo Molnar do { 86186470930SIngo Molnar print_sym_table(); 86286470930SIngo Molnar } while (!poll(&stdin_poll, 1, delay_msecs) == 1); 86386470930SIngo Molnar 864923c42c1SMike Galbraith c = getc(stdin); 865923c42c1SMike Galbraith tcsetattr(0, TCSAFLUSH, &save); 866923c42c1SMike Galbraith 867923c42c1SMike Galbraith handle_keypress(c); 868923c42c1SMike Galbraith goto repeat; 86986470930SIngo Molnar 87086470930SIngo Molnar return NULL; 87186470930SIngo Molnar } 87286470930SIngo Molnar 8732ab52083SAnton Blanchard /* Tag samples to be skipped. */ 874f37a291cSIngo Molnar static const char *skip_symbols[] = { 8752ab52083SAnton Blanchard "default_idle", 8762ab52083SAnton Blanchard "cpu_idle", 8772ab52083SAnton Blanchard "enter_idle", 8782ab52083SAnton Blanchard "exit_idle", 8792ab52083SAnton Blanchard "mwait_idle", 88059b90056SArnaldo Carvalho de Melo "mwait_idle_with_hints", 8818357275bSArnaldo Carvalho de Melo "poll_idle", 8823a3393efSAnton Blanchard "ppc64_runlatch_off", 8833a3393efSAnton Blanchard "pseries_dedicated_idle_sleep", 8842ab52083SAnton Blanchard NULL 8852ab52083SAnton Blanchard }; 8862ab52083SAnton Blanchard 887439d473bSArnaldo Carvalho de Melo static int symbol_filter(struct map *map, struct symbol *sym) 88886470930SIngo Molnar { 88986470930SIngo Molnar struct sym_entry *syme; 89086470930SIngo Molnar const char *name = sym->name; 8912ab52083SAnton Blanchard int i; 89286470930SIngo Molnar 8933a3393efSAnton Blanchard /* 8943a3393efSAnton Blanchard * ppc64 uses function descriptors and appends a '.' to the 8953a3393efSAnton Blanchard * start of every instruction address. Remove it. 8963a3393efSAnton Blanchard */ 8973a3393efSAnton Blanchard if (name[0] == '.') 8983a3393efSAnton Blanchard name++; 8993a3393efSAnton Blanchard 90086470930SIngo Molnar if (!strcmp(name, "_text") || 90186470930SIngo Molnar !strcmp(name, "_etext") || 90286470930SIngo Molnar !strcmp(name, "_sinittext") || 90386470930SIngo Molnar !strncmp("init_module", name, 11) || 90486470930SIngo Molnar !strncmp("cleanup_module", name, 14) || 90586470930SIngo Molnar strstr(name, "_text_start") || 90686470930SIngo Molnar strstr(name, "_text_end")) 90786470930SIngo Molnar return 1; 90886470930SIngo Molnar 90900a192b3SArnaldo Carvalho de Melo syme = symbol__priv(sym); 910439d473bSArnaldo Carvalho de Melo syme->map = map; 911b269876cSArnaldo Carvalho de Melo syme->src = NULL; 9126cff0e8dSKirill Smelkov 9136cff0e8dSKirill Smelkov if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) { 9146cff0e8dSKirill Smelkov /* schedule initial sym_filter_entry setup */ 9156cff0e8dSKirill Smelkov sym_filter_entry_sched = syme; 9166cff0e8dSKirill Smelkov sym_filter = NULL; 9176cff0e8dSKirill Smelkov } 918923c42c1SMike Galbraith 9192ab52083SAnton Blanchard for (i = 0; skip_symbols[i]; i++) { 9202ab52083SAnton Blanchard if (!strcmp(skip_symbols[i], name)) { 92186470930SIngo Molnar syme->skip = 1; 9222ab52083SAnton Blanchard break; 9232ab52083SAnton Blanchard } 9242ab52083SAnton Blanchard } 92586470930SIngo Molnar 92613cc5079SArnaldo Carvalho de Melo if (!syme->skip) 92713cc5079SArnaldo Carvalho de Melo syme->name_len = strlen(sym->name); 92813cc5079SArnaldo Carvalho de Melo 92986470930SIngo Molnar return 0; 93086470930SIngo Molnar } 93186470930SIngo Molnar 932b3165f41SArnaldo Carvalho de Melo static void event__process_sample(const event_t *self, 933b3165f41SArnaldo Carvalho de Melo struct perf_session *session, int counter) 93486470930SIngo Molnar { 9355b2bb75aSArnaldo Carvalho de Melo u64 ip = self->ip.ip; 9365b2bb75aSArnaldo Carvalho de Melo struct sym_entry *syme; 9371ed091c4SArnaldo Carvalho de Melo struct addr_location al; 9388ffcda17SArnaldo Carvalho de Melo u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 93986470930SIngo Molnar 94024bfef0fSArnaldo Carvalho de Melo ++samples; 94124bfef0fSArnaldo Carvalho de Melo 9428ffcda17SArnaldo Carvalho de Melo switch (origin) { 9431ed091c4SArnaldo Carvalho de Melo case PERF_RECORD_MISC_USER: 94424bfef0fSArnaldo Carvalho de Melo ++userspace_samples; 9458ffcda17SArnaldo Carvalho de Melo if (hide_user_symbols) 9468ffcda17SArnaldo Carvalho de Melo return; 9475b2bb75aSArnaldo Carvalho de Melo break; 9485b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_MISC_KERNEL: 9498ffcda17SArnaldo Carvalho de Melo if (hide_kernel_symbols) 9508ffcda17SArnaldo Carvalho de Melo return; 9515b2bb75aSArnaldo Carvalho de Melo break; 9525b2bb75aSArnaldo Carvalho de Melo default: 9535b2bb75aSArnaldo Carvalho de Melo return; 9545b2bb75aSArnaldo Carvalho de Melo } 9555b2bb75aSArnaldo Carvalho de Melo 956b3165f41SArnaldo Carvalho de Melo if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 || 95772b8fa17SArnaldo Carvalho de Melo al.filtered) 9581ed091c4SArnaldo Carvalho de Melo return; 95986470930SIngo Molnar 96072b8fa17SArnaldo Carvalho de Melo if (al.sym == NULL) { 96172b8fa17SArnaldo Carvalho de Melo /* 96272b8fa17SArnaldo Carvalho de Melo * As we do lazy loading of symtabs we only will know if the 96372b8fa17SArnaldo Carvalho de Melo * specified vmlinux file is invalid when we actually have a 96472b8fa17SArnaldo Carvalho de Melo * hit in kernel space and then try to load it. So if we get 96572b8fa17SArnaldo Carvalho de Melo * here and there are _no_ symbols in the DSO backing the 96672b8fa17SArnaldo Carvalho de Melo * kernel map, bail out. 96772b8fa17SArnaldo Carvalho de Melo * 96872b8fa17SArnaldo Carvalho de Melo * We may never get here, for instance, if we use -K/ 96972b8fa17SArnaldo Carvalho de Melo * --hide-kernel-symbols, even if the user specifies an 97072b8fa17SArnaldo Carvalho de Melo * invalid --vmlinux ;-) 97172b8fa17SArnaldo Carvalho de Melo */ 97272b8fa17SArnaldo Carvalho de Melo if (al.map == session->vmlinux_maps[MAP__FUNCTION] && 97372b8fa17SArnaldo Carvalho de Melo RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) { 97472b8fa17SArnaldo Carvalho de Melo pr_err("The %s file can't be used\n", 97572b8fa17SArnaldo Carvalho de Melo symbol_conf.vmlinux_name); 97672b8fa17SArnaldo Carvalho de Melo exit(1); 97772b8fa17SArnaldo Carvalho de Melo } 97872b8fa17SArnaldo Carvalho de Melo 97972b8fa17SArnaldo Carvalho de Melo return; 98072b8fa17SArnaldo Carvalho de Melo } 98172b8fa17SArnaldo Carvalho de Melo 9826cff0e8dSKirill Smelkov /* let's see, whether we need to install initial sym_filter_entry */ 9836cff0e8dSKirill Smelkov if (sym_filter_entry_sched) { 9846cff0e8dSKirill Smelkov sym_filter_entry = sym_filter_entry_sched; 9856cff0e8dSKirill Smelkov sym_filter_entry_sched = NULL; 9866cff0e8dSKirill Smelkov parse_source(sym_filter_entry); 9876cff0e8dSKirill Smelkov } 9886cff0e8dSKirill Smelkov 9891ed091c4SArnaldo Carvalho de Melo syme = symbol__priv(al.sym); 99086470930SIngo Molnar if (!syme->skip) { 99186470930SIngo Molnar syme->count[counter]++; 9928ffcda17SArnaldo Carvalho de Melo syme->origin = origin; 993923c42c1SMike Galbraith record_precise_ip(syme, counter, ip); 99486470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 99586470930SIngo Molnar if (list_empty(&syme->node) || !syme->node.next) 99686470930SIngo Molnar __list_insert_active_sym(syme); 99786470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 99886470930SIngo Molnar } 99986470930SIngo Molnar } 100086470930SIngo Molnar 1001d8f66248SArnaldo Carvalho de Melo static int event__process(event_t *event, struct perf_session *session) 10025b2bb75aSArnaldo Carvalho de Melo { 10035b2bb75aSArnaldo Carvalho de Melo switch (event->header.type) { 10045b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_COMM: 1005d8f66248SArnaldo Carvalho de Melo event__process_comm(event, session); 10065b2bb75aSArnaldo Carvalho de Melo break; 10075b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_MMAP: 1008d8f66248SArnaldo Carvalho de Melo event__process_mmap(event, session); 10095b2bb75aSArnaldo Carvalho de Melo break; 10100f35cd4cSArnaldo Carvalho de Melo case PERF_RECORD_FORK: 10110f35cd4cSArnaldo Carvalho de Melo case PERF_RECORD_EXIT: 10120f35cd4cSArnaldo Carvalho de Melo event__process_task(event, session); 10130f35cd4cSArnaldo Carvalho de Melo break; 10145b2bb75aSArnaldo Carvalho de Melo default: 10155b2bb75aSArnaldo Carvalho de Melo break; 10165b2bb75aSArnaldo Carvalho de Melo } 10175b2bb75aSArnaldo Carvalho de Melo 10185b2bb75aSArnaldo Carvalho de Melo return 0; 101986470930SIngo Molnar } 102086470930SIngo Molnar 102186470930SIngo Molnar struct mmap_data { 102286470930SIngo Molnar int counter; 102386470930SIngo Molnar void *base; 1024f37a291cSIngo Molnar int mask; 102586470930SIngo Molnar unsigned int prev; 102686470930SIngo Molnar }; 102786470930SIngo Molnar 102886470930SIngo Molnar static unsigned int mmap_read_head(struct mmap_data *md) 102986470930SIngo Molnar { 1030cdd6c482SIngo Molnar struct perf_event_mmap_page *pc = md->base; 103186470930SIngo Molnar int head; 103286470930SIngo Molnar 103386470930SIngo Molnar head = pc->data_head; 103486470930SIngo Molnar rmb(); 103586470930SIngo Molnar 103686470930SIngo Molnar return head; 103786470930SIngo Molnar } 103886470930SIngo Molnar 1039d8f66248SArnaldo Carvalho de Melo static void perf_session__mmap_read_counter(struct perf_session *self, 1040d8f66248SArnaldo Carvalho de Melo struct mmap_data *md) 104186470930SIngo Molnar { 104286470930SIngo Molnar unsigned int head = mmap_read_head(md); 104386470930SIngo Molnar unsigned int old = md->prev; 104486470930SIngo Molnar unsigned char *data = md->base + page_size; 104586470930SIngo Molnar int diff; 104686470930SIngo Molnar 104786470930SIngo Molnar /* 104886470930SIngo Molnar * If we're further behind than half the buffer, there's a chance 104986470930SIngo Molnar * the writer will bite our tail and mess up the samples under us. 105086470930SIngo Molnar * 105186470930SIngo Molnar * If we somehow ended up ahead of the head, we got messed up. 105286470930SIngo Molnar * 105386470930SIngo Molnar * In either case, truncate and restart at head. 105486470930SIngo Molnar */ 105586470930SIngo Molnar diff = head - old; 105686470930SIngo Molnar if (diff > md->mask / 2 || diff < 0) { 1057f4f0b418SMike Galbraith fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); 105886470930SIngo Molnar 105986470930SIngo Molnar /* 106086470930SIngo Molnar * head points to a known good entry, start there. 106186470930SIngo Molnar */ 106286470930SIngo Molnar old = head; 106386470930SIngo Molnar } 106486470930SIngo Molnar 106586470930SIngo Molnar for (; old != head;) { 106686470930SIngo Molnar event_t *event = (event_t *)&data[old & md->mask]; 106786470930SIngo Molnar 106886470930SIngo Molnar event_t event_copy; 106986470930SIngo Molnar 107086470930SIngo Molnar size_t size = event->header.size; 107186470930SIngo Molnar 107286470930SIngo Molnar /* 107386470930SIngo Molnar * Event straddles the mmap boundary -- header should always 107486470930SIngo Molnar * be inside due to u64 alignment of output. 107586470930SIngo Molnar */ 107686470930SIngo Molnar if ((old & md->mask) + size != ((old + size) & md->mask)) { 107786470930SIngo Molnar unsigned int offset = old; 107886470930SIngo Molnar unsigned int len = min(sizeof(*event), size), cpy; 107986470930SIngo Molnar void *dst = &event_copy; 108086470930SIngo Molnar 108186470930SIngo Molnar do { 108286470930SIngo Molnar cpy = min(md->mask + 1 - (offset & md->mask), len); 108386470930SIngo Molnar memcpy(dst, &data[offset & md->mask], cpy); 108486470930SIngo Molnar offset += cpy; 108586470930SIngo Molnar dst += cpy; 108686470930SIngo Molnar len -= cpy; 108786470930SIngo Molnar } while (len); 108886470930SIngo Molnar 108986470930SIngo Molnar event = &event_copy; 109086470930SIngo Molnar } 109186470930SIngo Molnar 10925b2bb75aSArnaldo Carvalho de Melo if (event->header.type == PERF_RECORD_SAMPLE) 1093b3165f41SArnaldo Carvalho de Melo event__process_sample(event, self, md->counter); 10945b2bb75aSArnaldo Carvalho de Melo else 1095d8f66248SArnaldo Carvalho de Melo event__process(event, self); 109686470930SIngo Molnar old += size; 109786470930SIngo Molnar } 109886470930SIngo Molnar 109986470930SIngo Molnar md->prev = old; 110086470930SIngo Molnar } 110186470930SIngo Molnar 110286470930SIngo Molnar static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; 110386470930SIngo Molnar static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; 110486470930SIngo Molnar 1105d8f66248SArnaldo Carvalho de Melo static void perf_session__mmap_read(struct perf_session *self) 11062f01190aSFrederic Weisbecker { 11072f01190aSFrederic Weisbecker int i, counter; 11082f01190aSFrederic Weisbecker 11092f01190aSFrederic Weisbecker for (i = 0; i < nr_cpus; i++) { 11102f01190aSFrederic Weisbecker for (counter = 0; counter < nr_counters; counter++) 1111d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read_counter(self, &mmap_array[i][counter]); 11122f01190aSFrederic Weisbecker } 11132f01190aSFrederic Weisbecker } 11142f01190aSFrederic Weisbecker 1115716c69feSIngo Molnar int nr_poll; 1116716c69feSIngo Molnar int group_fd; 1117716c69feSIngo Molnar 1118716c69feSIngo Molnar static void start_counter(int i, int counter) 111986470930SIngo Molnar { 1120cdd6c482SIngo Molnar struct perf_event_attr *attr; 11210fdc7e67SMike Galbraith int cpu; 112286470930SIngo Molnar 112386470930SIngo Molnar cpu = profile_cpu; 112486470930SIngo Molnar if (target_pid == -1 && profile_cpu == -1) 112586470930SIngo Molnar cpu = i; 112686470930SIngo Molnar 112786470930SIngo Molnar attr = attrs + counter; 112886470930SIngo Molnar 112986470930SIngo Molnar attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; 11307e4ff9e3SMike Galbraith 11317e4ff9e3SMike Galbraith if (freq) { 11327e4ff9e3SMike Galbraith attr->sample_type |= PERF_SAMPLE_PERIOD; 11337e4ff9e3SMike Galbraith attr->freq = 1; 11347e4ff9e3SMike Galbraith attr->sample_freq = freq; 11357e4ff9e3SMike Galbraith } 11367e4ff9e3SMike Galbraith 11370fdc7e67SMike Galbraith attr->inherit = (cpu < 0) && inherit; 11385b2bb75aSArnaldo Carvalho de Melo attr->mmap = 1; 113986470930SIngo Molnar 1140716c69feSIngo Molnar try_again: 1141cdd6c482SIngo Molnar fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); 1142716c69feSIngo Molnar 114386470930SIngo Molnar if (fd[i][counter] < 0) { 114486470930SIngo Molnar int err = errno; 114586470930SIngo Molnar 1146c10edee2SPekka Enberg if (err == EPERM || err == EACCES) 1147716c69feSIngo Molnar die("No permission - are you root?\n"); 1148716c69feSIngo Molnar /* 1149716c69feSIngo Molnar * If it's cycles then fall back to hrtimer 1150716c69feSIngo Molnar * based cpu-clock-tick sw counter, which 1151716c69feSIngo Molnar * is always available even if no PMU support: 1152716c69feSIngo Molnar */ 1153716c69feSIngo Molnar if (attr->type == PERF_TYPE_HARDWARE 1154f4dbfa8fSPeter Zijlstra && attr->config == PERF_COUNT_HW_CPU_CYCLES) { 1155716c69feSIngo Molnar 11563da297a6SIngo Molnar if (verbose) 1157716c69feSIngo Molnar warning(" ... trying to fall back to cpu-clock-ticks\n"); 11583da297a6SIngo Molnar 1159716c69feSIngo Molnar attr->type = PERF_TYPE_SOFTWARE; 1160f4dbfa8fSPeter Zijlstra attr->config = PERF_COUNT_SW_CPU_CLOCK; 1161716c69feSIngo Molnar goto try_again; 1162716c69feSIngo Molnar } 116330c806a0SIngo Molnar printf("\n"); 116430c806a0SIngo Molnar error("perfcounter syscall returned with %d (%s)\n", 116530c806a0SIngo Molnar fd[i][counter], strerror(err)); 1166cdd6c482SIngo Molnar die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); 116786470930SIngo Molnar exit(-1); 116886470930SIngo Molnar } 116986470930SIngo Molnar assert(fd[i][counter] >= 0); 117086470930SIngo Molnar fcntl(fd[i][counter], F_SETFL, O_NONBLOCK); 117186470930SIngo Molnar 117286470930SIngo Molnar /* 117386470930SIngo Molnar * First counter acts as the group leader: 117486470930SIngo Molnar */ 117586470930SIngo Molnar if (group && group_fd == -1) 117686470930SIngo Molnar group_fd = fd[i][counter]; 117786470930SIngo Molnar 117886470930SIngo Molnar event_array[nr_poll].fd = fd[i][counter]; 117986470930SIngo Molnar event_array[nr_poll].events = POLLIN; 118086470930SIngo Molnar nr_poll++; 118186470930SIngo Molnar 118286470930SIngo Molnar mmap_array[i][counter].counter = counter; 118386470930SIngo Molnar mmap_array[i][counter].prev = 0; 118486470930SIngo Molnar mmap_array[i][counter].mask = mmap_pages*page_size - 1; 118586470930SIngo Molnar mmap_array[i][counter].base = mmap(NULL, (mmap_pages+1)*page_size, 118686470930SIngo Molnar PROT_READ, MAP_SHARED, fd[i][counter], 0); 118786470930SIngo Molnar if (mmap_array[i][counter].base == MAP_FAILED) 118886470930SIngo Molnar die("failed to mmap with %d (%s)\n", errno, strerror(errno)); 118986470930SIngo Molnar } 1190716c69feSIngo Molnar 1191716c69feSIngo Molnar static int __cmd_top(void) 1192716c69feSIngo Molnar { 1193716c69feSIngo Molnar pthread_t thread; 1194716c69feSIngo Molnar int i, counter; 1195716c69feSIngo Molnar int ret; 1196d8f66248SArnaldo Carvalho de Melo /* 1197b3165f41SArnaldo Carvalho de Melo * FIXME: perf_session__new should allow passing a O_MMAP, so that all this 1198b3165f41SArnaldo Carvalho de Melo * mmap reading, etc is encapsulated in it. Use O_WRONLY for now. 1199d8f66248SArnaldo Carvalho de Melo */ 120075be6cf4SArnaldo Carvalho de Melo struct perf_session *session = perf_session__new(NULL, O_WRONLY, false); 1201b3165f41SArnaldo Carvalho de Melo if (session == NULL) 1202b3165f41SArnaldo Carvalho de Melo return -ENOMEM; 1203716c69feSIngo Molnar 12045b2bb75aSArnaldo Carvalho de Melo if (target_pid != -1) 1205d8f66248SArnaldo Carvalho de Melo event__synthesize_thread(target_pid, event__process, session); 12065b2bb75aSArnaldo Carvalho de Melo else 1207d8f66248SArnaldo Carvalho de Melo event__synthesize_threads(event__process, session); 12085b2bb75aSArnaldo Carvalho de Melo 1209716c69feSIngo Molnar for (i = 0; i < nr_cpus; i++) { 1210716c69feSIngo Molnar group_fd = -1; 1211716c69feSIngo Molnar for (counter = 0; counter < nr_counters; counter++) 1212716c69feSIngo Molnar start_counter(i, counter); 121386470930SIngo Molnar } 121486470930SIngo Molnar 12152f01190aSFrederic Weisbecker /* Wait for a minimal set of events before starting the snapshot */ 12162f01190aSFrederic Weisbecker poll(event_array, nr_poll, 100); 12172f01190aSFrederic Weisbecker 1218d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read(session); 12192f01190aSFrederic Weisbecker 122086470930SIngo Molnar if (pthread_create(&thread, NULL, display_thread, NULL)) { 122186470930SIngo Molnar printf("Could not create display thread.\n"); 122286470930SIngo Molnar exit(-1); 122386470930SIngo Molnar } 122486470930SIngo Molnar 122586470930SIngo Molnar if (realtime_prio) { 122686470930SIngo Molnar struct sched_param param; 122786470930SIngo Molnar 122886470930SIngo Molnar param.sched_priority = realtime_prio; 122986470930SIngo Molnar if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { 123086470930SIngo Molnar printf("Could not set realtime priority.\n"); 123186470930SIngo Molnar exit(-1); 123286470930SIngo Molnar } 123386470930SIngo Molnar } 123486470930SIngo Molnar 123586470930SIngo Molnar while (1) { 123686470930SIngo Molnar int hits = samples; 123786470930SIngo Molnar 1238d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read(session); 123986470930SIngo Molnar 124086470930SIngo Molnar if (hits == samples) 124186470930SIngo Molnar ret = poll(event_array, nr_poll, 100); 124286470930SIngo Molnar } 124386470930SIngo Molnar 124486470930SIngo Molnar return 0; 124586470930SIngo Molnar } 124686470930SIngo Molnar 124786470930SIngo Molnar static const char * const top_usage[] = { 124886470930SIngo Molnar "perf top [<options>]", 124986470930SIngo Molnar NULL 125086470930SIngo Molnar }; 125186470930SIngo Molnar 125286470930SIngo Molnar static const struct option options[] = { 125386470930SIngo Molnar OPT_CALLBACK('e', "event", NULL, "event", 125486470930SIngo Molnar "event selector. use 'perf list' to list available events", 125586470930SIngo Molnar parse_events), 125686470930SIngo Molnar OPT_INTEGER('c', "count", &default_interval, 125786470930SIngo Molnar "event period to sample"), 125886470930SIngo Molnar OPT_INTEGER('p', "pid", &target_pid, 125986470930SIngo Molnar "profile events on existing pid"), 126086470930SIngo Molnar OPT_BOOLEAN('a', "all-cpus", &system_wide, 126186470930SIngo Molnar "system-wide collection from all CPUs"), 126286470930SIngo Molnar OPT_INTEGER('C', "CPU", &profile_cpu, 126386470930SIngo Molnar "CPU to profile on"), 1264b32d133aSArnaldo Carvalho de Melo OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1265b32d133aSArnaldo Carvalho de Melo "file", "vmlinux pathname"), 12668ffcda17SArnaldo Carvalho de Melo OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, 12678ffcda17SArnaldo Carvalho de Melo "hide kernel symbols"), 126886470930SIngo Molnar OPT_INTEGER('m', "mmap-pages", &mmap_pages, 126986470930SIngo Molnar "number of mmap data pages"), 127086470930SIngo Molnar OPT_INTEGER('r', "realtime", &realtime_prio, 127186470930SIngo Molnar "collect data with this RT SCHED_FIFO priority"), 127286470930SIngo Molnar OPT_INTEGER('d', "delay", &delay_secs, 127386470930SIngo Molnar "number of seconds to delay between refreshes"), 127486470930SIngo Molnar OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, 127586470930SIngo Molnar "dump the symbol table used for profiling"), 127686470930SIngo Molnar OPT_INTEGER('f', "count-filter", &count_filter, 127786470930SIngo Molnar "only display functions with more events than this"), 127886470930SIngo Molnar OPT_BOOLEAN('g', "group", &group, 127986470930SIngo Molnar "put the counters into a counter group"), 12800fdc7e67SMike Galbraith OPT_BOOLEAN('i', "inherit", &inherit, 12810fdc7e67SMike Galbraith "child tasks inherit counters"), 1282923c42c1SMike Galbraith OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", 12836cff0e8dSKirill Smelkov "symbol to annotate"), 12841f208ea6SAnton Blanchard OPT_BOOLEAN('z', "zero", &zero, 128586470930SIngo Molnar "zero history across updates"), 128686470930SIngo Molnar OPT_INTEGER('F', "freq", &freq, 128786470930SIngo Molnar "profile at this frequency"), 128886470930SIngo Molnar OPT_INTEGER('E', "entries", &print_entries, 128986470930SIngo Molnar "display this many functions"), 12908ffcda17SArnaldo Carvalho de Melo OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, 12918ffcda17SArnaldo Carvalho de Melo "hide user symbols"), 12923da297a6SIngo Molnar OPT_BOOLEAN('v', "verbose", &verbose, 12933da297a6SIngo Molnar "be more verbose (show counter open errors, etc)"), 129486470930SIngo Molnar OPT_END() 129586470930SIngo Molnar }; 129686470930SIngo Molnar 1297f37a291cSIngo Molnar int cmd_top(int argc, const char **argv, const char *prefix __used) 129886470930SIngo Molnar { 1299b32d133aSArnaldo Carvalho de Melo int counter; 130086470930SIngo Molnar 130186470930SIngo Molnar page_size = sysconf(_SC_PAGE_SIZE); 130286470930SIngo Molnar 130386470930SIngo Molnar argc = parse_options(argc, argv, options, top_usage, 0); 130486470930SIngo Molnar if (argc) 130586470930SIngo Molnar usage_with_options(top_usage, options); 130686470930SIngo Molnar 130786470930SIngo Molnar /* CPU and PID are mutually exclusive */ 130886470930SIngo Molnar if (target_pid != -1 && profile_cpu != -1) { 130986470930SIngo Molnar printf("WARNING: PID switch overriding CPU\n"); 131086470930SIngo Molnar sleep(1); 131186470930SIngo Molnar profile_cpu = -1; 131286470930SIngo Molnar } 131386470930SIngo Molnar 131486470930SIngo Molnar if (!nr_counters) 131586470930SIngo Molnar nr_counters = 1; 131686470930SIngo Molnar 1317b32d133aSArnaldo Carvalho de Melo symbol_conf.priv_size = (sizeof(struct sym_entry) + 13185a8e5a30SArnaldo Carvalho de Melo (nr_counters + 1) * sizeof(unsigned long)); 13196cff0e8dSKirill Smelkov 13206cff0e8dSKirill Smelkov symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); 132175be6cf4SArnaldo Carvalho de Melo if (symbol__init() < 0) 1322b32d133aSArnaldo Carvalho de Melo return -1; 13235a8e5a30SArnaldo Carvalho de Melo 132486470930SIngo Molnar if (delay_secs < 1) 132586470930SIngo Molnar delay_secs = 1; 132686470930SIngo Molnar 13277e4ff9e3SMike Galbraith /* 13287e4ff9e3SMike Galbraith * User specified count overrides default frequency. 13297e4ff9e3SMike Galbraith */ 13307e4ff9e3SMike Galbraith if (default_interval) 13317e4ff9e3SMike Galbraith freq = 0; 13327e4ff9e3SMike Galbraith else if (freq) { 13337e4ff9e3SMike Galbraith default_interval = freq; 13347e4ff9e3SMike Galbraith } else { 13357e4ff9e3SMike Galbraith fprintf(stderr, "frequency and count are zero, aborting\n"); 13367e4ff9e3SMike Galbraith exit(EXIT_FAILURE); 13377e4ff9e3SMike Galbraith } 13387e4ff9e3SMike Galbraith 133986470930SIngo Molnar /* 134086470930SIngo Molnar * Fill in the ones not specifically initialized via -c: 134186470930SIngo Molnar */ 134286470930SIngo Molnar for (counter = 0; counter < nr_counters; counter++) { 134386470930SIngo Molnar if (attrs[counter].sample_period) 134486470930SIngo Molnar continue; 134586470930SIngo Molnar 134686470930SIngo Molnar attrs[counter].sample_period = default_interval; 134786470930SIngo Molnar } 134886470930SIngo Molnar 134986470930SIngo Molnar nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); 135086470930SIngo Molnar assert(nr_cpus <= MAX_NR_CPUS); 135186470930SIngo Molnar assert(nr_cpus >= 0); 135286470930SIngo Molnar 135386470930SIngo Molnar if (target_pid != -1 || profile_cpu != -1) 135486470930SIngo Molnar nr_cpus = 1; 135586470930SIngo Molnar 135613cc5079SArnaldo Carvalho de Melo get_term_dimensions(&winsize); 13573b6ed988SArnaldo Carvalho de Melo if (print_entries == 0) { 135813cc5079SArnaldo Carvalho de Melo update_print_entries(&winsize); 13593b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, sig_winch_handler); 13603b6ed988SArnaldo Carvalho de Melo } 13613b6ed988SArnaldo Carvalho de Melo 136286470930SIngo Molnar return __cmd_top(); 136386470930SIngo Molnar } 1364