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/symbol.h" 2486470930SIngo Molnar #include "util/color.h" 25439d473bSArnaldo Carvalho de Melo #include "util/thread.h" 2686470930SIngo Molnar #include "util/util.h" 2743cbcd8aSArnaldo Carvalho de Melo #include <linux/rbtree.h> 2886470930SIngo Molnar #include "util/parse-options.h" 2986470930SIngo Molnar #include "util/parse-events.h" 3086470930SIngo Molnar 318f28827aSFrederic Weisbecker #include "util/debug.h" 328f28827aSFrederic Weisbecker 3386470930SIngo Molnar #include <assert.h> 3486470930SIngo Molnar #include <fcntl.h> 3586470930SIngo Molnar 3686470930SIngo Molnar #include <stdio.h> 37923c42c1SMike Galbraith #include <termios.h> 38923c42c1SMike Galbraith #include <unistd.h> 3986470930SIngo Molnar 4086470930SIngo Molnar #include <errno.h> 4186470930SIngo Molnar #include <time.h> 4286470930SIngo Molnar #include <sched.h> 4386470930SIngo Molnar #include <pthread.h> 4486470930SIngo Molnar 4586470930SIngo Molnar #include <sys/syscall.h> 4686470930SIngo Molnar #include <sys/ioctl.h> 4786470930SIngo Molnar #include <sys/poll.h> 4886470930SIngo Molnar #include <sys/prctl.h> 4986470930SIngo Molnar #include <sys/wait.h> 5086470930SIngo Molnar #include <sys/uio.h> 5186470930SIngo Molnar #include <sys/mman.h> 5286470930SIngo Molnar 5386470930SIngo Molnar #include <linux/unistd.h> 5486470930SIngo Molnar #include <linux/types.h> 5586470930SIngo Molnar 5686470930SIngo Molnar static int fd[MAX_NR_CPUS][MAX_COUNTERS]; 5786470930SIngo Molnar 5886470930SIngo Molnar static int system_wide = 0; 5986470930SIngo Molnar 607e4ff9e3SMike Galbraith static int default_interval = 0; 6186470930SIngo Molnar 62923c42c1SMike Galbraith static int count_filter = 5; 633b6ed988SArnaldo Carvalho de Melo static int print_entries; 6486470930SIngo Molnar 6586470930SIngo Molnar static int target_pid = -1; 660fdc7e67SMike Galbraith static int inherit = 0; 6786470930SIngo Molnar static int profile_cpu = -1; 6886470930SIngo Molnar static int nr_cpus = 0; 6986470930SIngo Molnar static unsigned int realtime_prio = 0; 7086470930SIngo Molnar static int group = 0; 7186470930SIngo Molnar static unsigned int page_size; 7286470930SIngo Molnar static unsigned int mmap_pages = 16; 7342e59d7dSIngo Molnar static int freq = 1000; /* 1 KHz */ 7486470930SIngo Molnar 7586470930SIngo Molnar static int delay_secs = 2; 7642e59d7dSIngo Molnar static int zero = 0; 7742e59d7dSIngo Molnar static int dump_symtab = 0; 7886470930SIngo Molnar 798ffcda17SArnaldo Carvalho de Melo static bool hide_kernel_symbols = false; 808ffcda17SArnaldo Carvalho de Melo static bool hide_user_symbols = false; 8113cc5079SArnaldo Carvalho de Melo static struct winsize winsize; 82b32d133aSArnaldo Carvalho de Melo struct symbol_conf symbol_conf; 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; 97923c42c1SMike Galbraith static int sym_pcnt_filter = 5; 98923c42c1SMike Galbraith static int sym_counter = 0; 9946ab9764SMike Galbraith static int display_weighted = -1; 100923c42c1SMike Galbraith 101923c42c1SMike Galbraith /* 10286470930SIngo Molnar * Symbols 10386470930SIngo Molnar */ 10486470930SIngo Molnar 105b269876cSArnaldo Carvalho de Melo struct sym_entry_source { 106b269876cSArnaldo Carvalho de Melo struct source_line *source; 107b269876cSArnaldo Carvalho de Melo struct source_line *lines; 108b269876cSArnaldo Carvalho de Melo struct source_line **lines_tail; 109b269876cSArnaldo Carvalho de Melo pthread_mutex_t lock; 110b269876cSArnaldo Carvalho de Melo }; 111b269876cSArnaldo Carvalho de Melo 11286470930SIngo Molnar struct sym_entry { 11386470930SIngo Molnar struct rb_node rb_node; 11486470930SIngo Molnar struct list_head node; 11586470930SIngo Molnar unsigned long snap_count; 11686470930SIngo Molnar double weight; 11786470930SIngo Molnar int skip; 11813cc5079SArnaldo Carvalho de Melo u16 name_len; 1198ffcda17SArnaldo Carvalho de Melo u8 origin; 120439d473bSArnaldo Carvalho de Melo struct map *map; 121b269876cSArnaldo Carvalho de Melo struct sym_entry_source *src; 1225a8e5a30SArnaldo Carvalho de Melo unsigned long count[0]; 12386470930SIngo Molnar }; 12486470930SIngo Molnar 125923c42c1SMike Galbraith /* 126923c42c1SMike Galbraith * Source functions 127923c42c1SMike Galbraith */ 128923c42c1SMike Galbraith 12951a472deSArnaldo Carvalho de Melo static inline struct symbol *sym_entry__symbol(struct sym_entry *self) 13051a472deSArnaldo Carvalho de Melo { 131b32d133aSArnaldo Carvalho de Melo return ((void *)self) + symbol_conf.priv_size; 13251a472deSArnaldo Carvalho de Melo } 13351a472deSArnaldo Carvalho de Melo 13413cc5079SArnaldo Carvalho de Melo static void get_term_dimensions(struct winsize *ws) 1353b6ed988SArnaldo Carvalho de Melo { 13613cc5079SArnaldo Carvalho de Melo char *s = getenv("LINES"); 1373b6ed988SArnaldo Carvalho de Melo 13813cc5079SArnaldo Carvalho de Melo if (s != NULL) { 13913cc5079SArnaldo Carvalho de Melo ws->ws_row = atoi(s); 14013cc5079SArnaldo Carvalho de Melo s = getenv("COLUMNS"); 14113cc5079SArnaldo Carvalho de Melo if (s != NULL) { 14213cc5079SArnaldo Carvalho de Melo ws->ws_col = atoi(s); 14313cc5079SArnaldo Carvalho de Melo if (ws->ws_row && ws->ws_col) 14413cc5079SArnaldo Carvalho de Melo return; 14513cc5079SArnaldo Carvalho de Melo } 14613cc5079SArnaldo Carvalho de Melo } 1473b6ed988SArnaldo Carvalho de Melo #ifdef TIOCGWINSZ 14813cc5079SArnaldo Carvalho de Melo if (ioctl(1, TIOCGWINSZ, ws) == 0 && 14913cc5079SArnaldo Carvalho de Melo ws->ws_row && ws->ws_col) 15013cc5079SArnaldo Carvalho de Melo return; 1513b6ed988SArnaldo Carvalho de Melo #endif 15213cc5079SArnaldo Carvalho de Melo ws->ws_row = 25; 15313cc5079SArnaldo Carvalho de Melo ws->ws_col = 80; 1543b6ed988SArnaldo Carvalho de Melo } 1553b6ed988SArnaldo Carvalho de Melo 15613cc5079SArnaldo Carvalho de Melo static void update_print_entries(struct winsize *ws) 1573b6ed988SArnaldo Carvalho de Melo { 15813cc5079SArnaldo Carvalho de Melo print_entries = ws->ws_row; 15913cc5079SArnaldo Carvalho de Melo 1603b6ed988SArnaldo Carvalho de Melo if (print_entries > 9) 1613b6ed988SArnaldo Carvalho de Melo print_entries -= 9; 1623b6ed988SArnaldo Carvalho de Melo } 1633b6ed988SArnaldo Carvalho de Melo 1643b6ed988SArnaldo Carvalho de Melo static void sig_winch_handler(int sig __used) 1653b6ed988SArnaldo Carvalho de Melo { 16613cc5079SArnaldo Carvalho de Melo get_term_dimensions(&winsize); 16713cc5079SArnaldo Carvalho de Melo update_print_entries(&winsize); 1683b6ed988SArnaldo Carvalho de Melo } 1693b6ed988SArnaldo Carvalho de Melo 170923c42c1SMike Galbraith static void parse_source(struct sym_entry *syme) 171923c42c1SMike Galbraith { 172923c42c1SMike Galbraith struct symbol *sym; 173b269876cSArnaldo Carvalho de Melo struct sym_entry_source *source; 174439d473bSArnaldo Carvalho de Melo struct map *map; 175923c42c1SMike Galbraith FILE *file; 17683a0944fSIngo Molnar char command[PATH_MAX*2]; 177439d473bSArnaldo Carvalho de Melo const char *path; 178439d473bSArnaldo Carvalho de Melo u64 len; 179923c42c1SMike Galbraith 180923c42c1SMike Galbraith if (!syme) 181923c42c1SMike Galbraith return; 182923c42c1SMike Galbraith 183b269876cSArnaldo Carvalho de Melo if (syme->src == NULL) { 18436479484SArnaldo Carvalho de Melo syme->src = zalloc(sizeof(*source)); 185b269876cSArnaldo Carvalho de Melo if (syme->src == NULL) 186b269876cSArnaldo Carvalho de Melo return; 187b269876cSArnaldo Carvalho de Melo pthread_mutex_init(&syme->src->lock, NULL); 188b269876cSArnaldo Carvalho de Melo } 189b269876cSArnaldo Carvalho de Melo 190b269876cSArnaldo Carvalho de Melo source = syme->src; 191b269876cSArnaldo Carvalho de Melo 192b269876cSArnaldo Carvalho de Melo if (source->lines) { 193b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&source->lock); 194923c42c1SMike Galbraith goto out_assign; 195923c42c1SMike Galbraith } 196923c42c1SMike Galbraith 19751a472deSArnaldo Carvalho de Melo sym = sym_entry__symbol(syme); 198439d473bSArnaldo Carvalho de Melo map = syme->map; 199439d473bSArnaldo Carvalho de Melo path = map->dso->long_name; 200923c42c1SMike Galbraith 201923c42c1SMike Galbraith len = sym->end - sym->start; 202923c42c1SMike Galbraith 203439d473bSArnaldo Carvalho de Melo sprintf(command, 204439d473bSArnaldo Carvalho de Melo "objdump --start-address=0x%016Lx " 205439d473bSArnaldo Carvalho de Melo "--stop-address=0x%016Lx -dS %s", 206c88e4bf6SArnaldo Carvalho de Melo map->unmap_ip(map, sym->start), 207c88e4bf6SArnaldo Carvalho de Melo map->unmap_ip(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; 218923c42c1SMike Galbraith char *c; 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 237923c42c1SMike Galbraith if (strlen(src->line)>8 && src->line[8] == ':') { 238923c42c1SMike Galbraith src->eip = strtoull(src->line, NULL, 16); 239c88e4bf6SArnaldo Carvalho de Melo src->eip = map->unmap_ip(map, src->eip); 240923c42c1SMike Galbraith } 241923c42c1SMike Galbraith if (strlen(src->line)>8 && src->line[16] == ':') { 242923c42c1SMike Galbraith src->eip = strtoull(src->line, NULL, 16); 243c88e4bf6SArnaldo Carvalho de Melo src->eip = map->unmap_ip(map, src->eip); 244923c42c1SMike Galbraith } 245923c42c1SMike Galbraith } 246923c42c1SMike Galbraith pclose(file); 247923c42c1SMike Galbraith out_assign: 248923c42c1SMike Galbraith sym_filter_entry = syme; 249b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&source->lock); 250923c42c1SMike Galbraith } 251923c42c1SMike Galbraith 252923c42c1SMike Galbraith static void __zero_source_counters(struct sym_entry *syme) 253923c42c1SMike Galbraith { 254923c42c1SMike Galbraith int i; 255923c42c1SMike Galbraith struct source_line *line; 256923c42c1SMike Galbraith 257b269876cSArnaldo Carvalho de Melo line = syme->src->lines; 258923c42c1SMike Galbraith while (line) { 259923c42c1SMike Galbraith for (i = 0; i < nr_counters; i++) 260923c42c1SMike Galbraith line->count[i] = 0; 261923c42c1SMike Galbraith line = line->next; 262923c42c1SMike Galbraith } 263923c42c1SMike Galbraith } 264923c42c1SMike Galbraith 265923c42c1SMike Galbraith static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip) 266923c42c1SMike Galbraith { 267923c42c1SMike Galbraith struct source_line *line; 268923c42c1SMike Galbraith 269923c42c1SMike Galbraith if (syme != sym_filter_entry) 270923c42c1SMike Galbraith return; 271923c42c1SMike Galbraith 272b269876cSArnaldo Carvalho de Melo if (pthread_mutex_trylock(&syme->src->lock)) 273923c42c1SMike Galbraith return; 274923c42c1SMike Galbraith 275b269876cSArnaldo Carvalho de Melo if (syme->src == NULL || syme->src->source == NULL) 276923c42c1SMike Galbraith goto out_unlock; 277923c42c1SMike Galbraith 278b269876cSArnaldo Carvalho de Melo for (line = syme->src->lines; line; line = line->next) { 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; 294923c42c1SMike Galbraith char pattern[PATH_MAX]; 295923c42c1SMike Galbraith 296923c42c1SMike Galbraith sprintf(pattern, "<%s>:", symbol->name); 297923c42c1SMike Galbraith 298b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 299b269876cSArnaldo Carvalho de Melo for (line = syme->src->lines; line; line = line->next) { 300923c42c1SMike Galbraith if (strstr(line->line, pattern)) { 301b269876cSArnaldo Carvalho de Melo syme->src->source = line; 302923c42c1SMike Galbraith break; 303923c42c1SMike Galbraith } 304923c42c1SMike Galbraith } 305b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 306923c42c1SMike Galbraith } 307923c42c1SMike Galbraith 308923c42c1SMike Galbraith static void show_lines(struct source_line *queue, int count, int total) 309923c42c1SMike Galbraith { 310923c42c1SMike Galbraith int i; 311923c42c1SMike Galbraith struct source_line *line; 312923c42c1SMike Galbraith 313923c42c1SMike Galbraith line = queue; 314923c42c1SMike Galbraith for (i = 0; i < count; i++) { 315923c42c1SMike Galbraith float pcnt = 100.0*(float)line->count[sym_counter]/(float)total; 316923c42c1SMike Galbraith 317923c42c1SMike Galbraith printf("%8li %4.1f%%\t%s\n", line->count[sym_counter], pcnt, line->line); 318923c42c1SMike Galbraith line = line->next; 319923c42c1SMike Galbraith } 320923c42c1SMike Galbraith } 321923c42c1SMike Galbraith 322923c42c1SMike Galbraith #define TRACE_COUNT 3 323923c42c1SMike Galbraith 324923c42c1SMike Galbraith static void show_details(struct sym_entry *syme) 325923c42c1SMike Galbraith { 326923c42c1SMike Galbraith struct symbol *symbol; 327923c42c1SMike Galbraith struct source_line *line; 328923c42c1SMike Galbraith struct source_line *line_queue = NULL; 329923c42c1SMike Galbraith int displayed = 0; 330923c42c1SMike Galbraith int line_queue_count = 0, total = 0, more = 0; 331923c42c1SMike Galbraith 332923c42c1SMike Galbraith if (!syme) 333923c42c1SMike Galbraith return; 334923c42c1SMike Galbraith 335b269876cSArnaldo Carvalho de Melo if (!syme->src->source) 336923c42c1SMike Galbraith lookup_sym_source(syme); 337923c42c1SMike Galbraith 338b269876cSArnaldo Carvalho de Melo if (!syme->src->source) 339923c42c1SMike Galbraith return; 340923c42c1SMike Galbraith 34151a472deSArnaldo Carvalho de Melo symbol = sym_entry__symbol(syme); 342923c42c1SMike Galbraith printf("Showing %s for %s\n", event_name(sym_counter), symbol->name); 343923c42c1SMike Galbraith printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter); 344923c42c1SMike Galbraith 345b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 346b269876cSArnaldo Carvalho de Melo line = syme->src->source; 347923c42c1SMike Galbraith while (line) { 348923c42c1SMike Galbraith total += line->count[sym_counter]; 349923c42c1SMike Galbraith line = line->next; 350923c42c1SMike Galbraith } 351923c42c1SMike Galbraith 352b269876cSArnaldo Carvalho de Melo line = syme->src->source; 353923c42c1SMike Galbraith while (line) { 354923c42c1SMike Galbraith float pcnt = 0.0; 355923c42c1SMike Galbraith 356923c42c1SMike Galbraith if (!line_queue_count) 357923c42c1SMike Galbraith line_queue = line; 358923c42c1SMike Galbraith line_queue_count++; 359923c42c1SMike Galbraith 360923c42c1SMike Galbraith if (line->count[sym_counter]) 361923c42c1SMike Galbraith pcnt = 100.0 * line->count[sym_counter] / (float)total; 362923c42c1SMike Galbraith if (pcnt >= (float)sym_pcnt_filter) { 363923c42c1SMike Galbraith if (displayed <= print_entries) 364923c42c1SMike Galbraith show_lines(line_queue, line_queue_count, total); 365923c42c1SMike Galbraith else more++; 366923c42c1SMike Galbraith displayed += line_queue_count; 367923c42c1SMike Galbraith line_queue_count = 0; 368923c42c1SMike Galbraith line_queue = NULL; 369923c42c1SMike Galbraith } else if (line_queue_count > TRACE_COUNT) { 370923c42c1SMike Galbraith line_queue = line_queue->next; 371923c42c1SMike Galbraith line_queue_count--; 372923c42c1SMike Galbraith } 373923c42c1SMike Galbraith 374923c42c1SMike Galbraith line->count[sym_counter] = zero ? 0 : line->count[sym_counter] * 7 / 8; 375923c42c1SMike Galbraith line = line->next; 376923c42c1SMike Galbraith } 377b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 378923c42c1SMike Galbraith if (more) 379923c42c1SMike Galbraith printf("%d lines not displayed, maybe increase display entries [e]\n", more); 380923c42c1SMike Galbraith } 38186470930SIngo Molnar 38286470930SIngo Molnar /* 3835b2bb75aSArnaldo Carvalho de Melo * Symbols will be added here in event__process_sample and will get out 38486470930SIngo Molnar * after decayed. 38586470930SIngo Molnar */ 38686470930SIngo Molnar static LIST_HEAD(active_symbols); 38786470930SIngo Molnar static pthread_mutex_t active_symbols_lock = PTHREAD_MUTEX_INITIALIZER; 38886470930SIngo Molnar 38986470930SIngo Molnar /* 39086470930SIngo Molnar * Ordering weight: count-1 * count-2 * ... / count-n 39186470930SIngo Molnar */ 39286470930SIngo Molnar static double sym_weight(const struct sym_entry *sym) 39386470930SIngo Molnar { 39486470930SIngo Molnar double weight = sym->snap_count; 39586470930SIngo Molnar int counter; 39686470930SIngo Molnar 39746ab9764SMike Galbraith if (!display_weighted) 39846ab9764SMike Galbraith return weight; 39946ab9764SMike Galbraith 40086470930SIngo Molnar for (counter = 1; counter < nr_counters-1; counter++) 40186470930SIngo Molnar weight *= sym->count[counter]; 40286470930SIngo Molnar 40386470930SIngo Molnar weight /= (sym->count[counter] + 1); 40486470930SIngo Molnar 40586470930SIngo Molnar return weight; 40686470930SIngo Molnar } 40786470930SIngo Molnar 40886470930SIngo Molnar static long samples; 40986470930SIngo Molnar static long userspace_samples; 41086470930SIngo Molnar static const char CONSOLE_CLEAR[] = "[H[2J"; 41186470930SIngo Molnar 41286470930SIngo Molnar static void __list_insert_active_sym(struct sym_entry *syme) 41386470930SIngo Molnar { 41486470930SIngo Molnar list_add(&syme->node, &active_symbols); 41586470930SIngo Molnar } 41686470930SIngo Molnar 41786470930SIngo Molnar static void list_remove_active_sym(struct sym_entry *syme) 41886470930SIngo Molnar { 41986470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 42086470930SIngo Molnar list_del_init(&syme->node); 42186470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 42286470930SIngo Molnar } 42386470930SIngo Molnar 42486470930SIngo Molnar static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se) 42586470930SIngo Molnar { 42686470930SIngo Molnar struct rb_node **p = &tree->rb_node; 42786470930SIngo Molnar struct rb_node *parent = NULL; 42886470930SIngo Molnar struct sym_entry *iter; 42986470930SIngo Molnar 43086470930SIngo Molnar while (*p != NULL) { 43186470930SIngo Molnar parent = *p; 43286470930SIngo Molnar iter = rb_entry(parent, struct sym_entry, rb_node); 43386470930SIngo Molnar 43486470930SIngo Molnar if (se->weight > iter->weight) 43586470930SIngo Molnar p = &(*p)->rb_left; 43686470930SIngo Molnar else 43786470930SIngo Molnar p = &(*p)->rb_right; 43886470930SIngo Molnar } 43986470930SIngo Molnar 44086470930SIngo Molnar rb_link_node(&se->rb_node, parent, p); 44186470930SIngo Molnar rb_insert_color(&se->rb_node, tree); 44286470930SIngo Molnar } 44386470930SIngo Molnar 44486470930SIngo Molnar static void print_sym_table(void) 44586470930SIngo Molnar { 44686470930SIngo Molnar int printed = 0, j; 44746ab9764SMike Galbraith int counter, snap = !display_weighted ? sym_counter : 0; 44886470930SIngo Molnar float samples_per_sec = samples/delay_secs; 44986470930SIngo Molnar float ksamples_per_sec = (samples-userspace_samples)/delay_secs; 45086470930SIngo Molnar float sum_ksamples = 0.0; 45186470930SIngo Molnar struct sym_entry *syme, *n; 45286470930SIngo Molnar struct rb_root tmp = RB_ROOT; 45386470930SIngo Molnar struct rb_node *nd; 4547cc017edSArnaldo Carvalho de Melo int sym_width = 0, dso_width = 0, max_dso_width; 45513cc5079SArnaldo Carvalho de Melo const int win_width = winsize.ws_col - 1; 45686470930SIngo Molnar 45786470930SIngo Molnar samples = userspace_samples = 0; 45886470930SIngo Molnar 45986470930SIngo Molnar /* Sort the active symbols */ 46086470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 46186470930SIngo Molnar syme = list_entry(active_symbols.next, struct sym_entry, node); 46286470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 46386470930SIngo Molnar 46486470930SIngo Molnar list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 46546ab9764SMike Galbraith syme->snap_count = syme->count[snap]; 46686470930SIngo Molnar if (syme->snap_count != 0) { 46713cc5079SArnaldo Carvalho de Melo 4688ffcda17SArnaldo Carvalho de Melo if ((hide_user_symbols && 4698ffcda17SArnaldo Carvalho de Melo syme->origin == PERF_RECORD_MISC_USER) || 4708ffcda17SArnaldo Carvalho de Melo (hide_kernel_symbols && 4718ffcda17SArnaldo Carvalho de Melo syme->origin == PERF_RECORD_MISC_KERNEL)) { 4728ffcda17SArnaldo Carvalho de Melo list_remove_active_sym(syme); 4738ffcda17SArnaldo Carvalho de Melo continue; 4748ffcda17SArnaldo Carvalho de Melo } 47586470930SIngo Molnar syme->weight = sym_weight(syme); 47686470930SIngo Molnar rb_insert_active_sym(&tmp, syme); 47786470930SIngo Molnar sum_ksamples += syme->snap_count; 47886470930SIngo Molnar 47986470930SIngo Molnar for (j = 0; j < nr_counters; j++) 48086470930SIngo Molnar syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; 48186470930SIngo Molnar } else 48286470930SIngo Molnar list_remove_active_sym(syme); 48386470930SIngo Molnar } 48486470930SIngo Molnar 48586470930SIngo Molnar puts(CONSOLE_CLEAR); 48686470930SIngo Molnar 48713cc5079SArnaldo Carvalho de Melo printf("%-*.*s\n", win_width, win_width, graph_dotted_line); 48886470930SIngo Molnar printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", 48986470930SIngo Molnar samples_per_sec, 49086470930SIngo Molnar 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec))); 49186470930SIngo Molnar 49246ab9764SMike Galbraith if (nr_counters == 1 || !display_weighted) { 4939cffa8d5SPaul Mackerras printf("%Ld", (u64)attrs[0].sample_period); 49486470930SIngo Molnar if (freq) 49586470930SIngo Molnar printf("Hz "); 49686470930SIngo Molnar else 49786470930SIngo Molnar printf(" "); 49886470930SIngo Molnar } 49986470930SIngo Molnar 50046ab9764SMike Galbraith if (!display_weighted) 50146ab9764SMike Galbraith printf("%s", event_name(sym_counter)); 50246ab9764SMike Galbraith else for (counter = 0; counter < nr_counters; counter++) { 50386470930SIngo Molnar if (counter) 50486470930SIngo Molnar printf("/"); 50586470930SIngo Molnar 50686470930SIngo Molnar printf("%s", event_name(counter)); 50786470930SIngo Molnar } 50886470930SIngo Molnar 50986470930SIngo Molnar printf( "], "); 51086470930SIngo Molnar 51186470930SIngo Molnar if (target_pid != -1) 51286470930SIngo Molnar printf(" (target_pid: %d", target_pid); 51386470930SIngo Molnar else 51486470930SIngo Molnar printf(" (all"); 51586470930SIngo Molnar 51686470930SIngo Molnar if (profile_cpu != -1) 51786470930SIngo Molnar printf(", cpu: %d)\n", profile_cpu); 51886470930SIngo Molnar else { 51986470930SIngo Molnar if (target_pid != -1) 52086470930SIngo Molnar printf(")\n"); 52186470930SIngo Molnar else 52286470930SIngo Molnar printf(", %d CPUs)\n", nr_cpus); 52386470930SIngo Molnar } 52486470930SIngo Molnar 5251a105f74SArnaldo Carvalho de Melo printf("%-*.*s\n", win_width, win_width, graph_dotted_line); 52686470930SIngo Molnar 527923c42c1SMike Galbraith if (sym_filter_entry) { 528923c42c1SMike Galbraith show_details(sym_filter_entry); 529923c42c1SMike Galbraith return; 530923c42c1SMike Galbraith } 531923c42c1SMike Galbraith 53213cc5079SArnaldo Carvalho de Melo /* 53313cc5079SArnaldo Carvalho de Melo * Find the longest symbol name that will be displayed 53413cc5079SArnaldo Carvalho de Melo */ 53513cc5079SArnaldo Carvalho de Melo for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 53613cc5079SArnaldo Carvalho de Melo syme = rb_entry(nd, struct sym_entry, rb_node); 53713cc5079SArnaldo Carvalho de Melo if (++printed > print_entries || 53813cc5079SArnaldo Carvalho de Melo (int)syme->snap_count < count_filter) 53913cc5079SArnaldo Carvalho de Melo continue; 54013cc5079SArnaldo Carvalho de Melo 5411a105f74SArnaldo Carvalho de Melo if (syme->map->dso->long_name_len > dso_width) 5421a105f74SArnaldo Carvalho de Melo dso_width = syme->map->dso->long_name_len; 5431a105f74SArnaldo Carvalho de Melo 54413cc5079SArnaldo Carvalho de Melo if (syme->name_len > sym_width) 54513cc5079SArnaldo Carvalho de Melo sym_width = syme->name_len; 54613cc5079SArnaldo Carvalho de Melo } 54713cc5079SArnaldo Carvalho de Melo 54813cc5079SArnaldo Carvalho de Melo printed = 0; 54913cc5079SArnaldo Carvalho de Melo 5507cc017edSArnaldo Carvalho de Melo max_dso_width = winsize.ws_col - sym_width - 29; 5511a105f74SArnaldo Carvalho de Melo if (dso_width > max_dso_width) 5521a105f74SArnaldo Carvalho de Melo dso_width = max_dso_width; 5531a105f74SArnaldo Carvalho de Melo putchar('\n'); 55486470930SIngo Molnar if (nr_counters == 1) 55586470930SIngo Molnar printf(" samples pcnt"); 55686470930SIngo Molnar else 55786470930SIngo Molnar printf(" weight samples pcnt"); 55886470930SIngo Molnar 5597ced156bSArnaldo Carvalho de Melo if (verbose) 5607ced156bSArnaldo Carvalho de Melo printf(" RIP "); 5617cc017edSArnaldo Carvalho de Melo printf(" %-*.*s DSO\n", sym_width, sym_width, "function"); 5627ced156bSArnaldo Carvalho de Melo printf(" %s _______ _____", 5637ced156bSArnaldo Carvalho de Melo nr_counters == 1 ? " " : "______"); 5647ced156bSArnaldo Carvalho de Melo if (verbose) 5657ced156bSArnaldo Carvalho de Melo printf(" ________________"); 5661a105f74SArnaldo Carvalho de Melo printf(" %-*.*s", sym_width, sym_width, graph_line); 5671a105f74SArnaldo Carvalho de Melo printf(" %-*.*s", dso_width, dso_width, graph_line); 5681a105f74SArnaldo Carvalho de Melo puts("\n"); 56986470930SIngo Molnar 57086470930SIngo Molnar for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { 57183a0944fSIngo Molnar struct symbol *sym; 57286470930SIngo Molnar double pcnt; 57386470930SIngo Molnar 57483a0944fSIngo Molnar syme = rb_entry(nd, struct sym_entry, rb_node); 57551a472deSArnaldo Carvalho de Melo sym = sym_entry__symbol(syme); 57683a0944fSIngo Molnar 577923c42c1SMike Galbraith if (++printed > print_entries || (int)syme->snap_count < count_filter) 57886470930SIngo Molnar continue; 57986470930SIngo Molnar 58086470930SIngo Molnar pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) / 58186470930SIngo Molnar sum_ksamples)); 58286470930SIngo Molnar 58346ab9764SMike Galbraith if (nr_counters == 1 || !display_weighted) 5845b2bb75aSArnaldo Carvalho de Melo printf("%20.2f ", syme->weight); 58586470930SIngo Molnar else 5865b2bb75aSArnaldo Carvalho de Melo printf("%9.1f %10ld ", syme->weight, syme->snap_count); 58786470930SIngo Molnar 5881e11fd82SFrederic Weisbecker percent_color_fprintf(stdout, "%4.1f%%", pcnt); 5897ced156bSArnaldo Carvalho de Melo if (verbose) 5905b2bb75aSArnaldo Carvalho de Melo printf(" %016llx", sym->start); 59113cc5079SArnaldo Carvalho de Melo printf(" %-*.*s", sym_width, sym_width, sym->name); 5927cc017edSArnaldo Carvalho de Melo printf(" %-*.*s\n", dso_width, dso_width, 59313cc5079SArnaldo Carvalho de Melo dso_width >= syme->map->dso->long_name_len ? 59413cc5079SArnaldo Carvalho de Melo syme->map->dso->long_name : 59513cc5079SArnaldo Carvalho de Melo syme->map->dso->short_name); 59686470930SIngo Molnar } 59786470930SIngo Molnar } 59886470930SIngo Molnar 599923c42c1SMike Galbraith static void prompt_integer(int *target, const char *msg) 600923c42c1SMike Galbraith { 601923c42c1SMike Galbraith char *buf = malloc(0), *p; 602923c42c1SMike Galbraith size_t dummy = 0; 603923c42c1SMike Galbraith int tmp; 604923c42c1SMike Galbraith 605923c42c1SMike Galbraith fprintf(stdout, "\n%s: ", msg); 606923c42c1SMike Galbraith if (getline(&buf, &dummy, stdin) < 0) 607923c42c1SMike Galbraith return; 608923c42c1SMike Galbraith 609923c42c1SMike Galbraith p = strchr(buf, '\n'); 610923c42c1SMike Galbraith if (p) 611923c42c1SMike Galbraith *p = 0; 612923c42c1SMike Galbraith 613923c42c1SMike Galbraith p = buf; 614923c42c1SMike Galbraith while(*p) { 615923c42c1SMike Galbraith if (!isdigit(*p)) 616923c42c1SMike Galbraith goto out_free; 617923c42c1SMike Galbraith p++; 618923c42c1SMike Galbraith } 619923c42c1SMike Galbraith tmp = strtoul(buf, NULL, 10); 620923c42c1SMike Galbraith *target = tmp; 621923c42c1SMike Galbraith out_free: 622923c42c1SMike Galbraith free(buf); 623923c42c1SMike Galbraith } 624923c42c1SMike Galbraith 625923c42c1SMike Galbraith static void prompt_percent(int *target, const char *msg) 626923c42c1SMike Galbraith { 627923c42c1SMike Galbraith int tmp = 0; 628923c42c1SMike Galbraith 629923c42c1SMike Galbraith prompt_integer(&tmp, msg); 630923c42c1SMike Galbraith if (tmp >= 0 && tmp <= 100) 631923c42c1SMike Galbraith *target = tmp; 632923c42c1SMike Galbraith } 633923c42c1SMike Galbraith 634923c42c1SMike Galbraith static void prompt_symbol(struct sym_entry **target, const char *msg) 635923c42c1SMike Galbraith { 636923c42c1SMike Galbraith char *buf = malloc(0), *p; 637923c42c1SMike Galbraith struct sym_entry *syme = *target, *n, *found = NULL; 638923c42c1SMike Galbraith size_t dummy = 0; 639923c42c1SMike Galbraith 640923c42c1SMike Galbraith /* zero counters of active symbol */ 641923c42c1SMike Galbraith if (syme) { 642b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 643923c42c1SMike Galbraith __zero_source_counters(syme); 644923c42c1SMike Galbraith *target = NULL; 645b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 646923c42c1SMike Galbraith } 647923c42c1SMike Galbraith 648923c42c1SMike Galbraith fprintf(stdout, "\n%s: ", msg); 649923c42c1SMike Galbraith if (getline(&buf, &dummy, stdin) < 0) 650923c42c1SMike Galbraith goto out_free; 651923c42c1SMike Galbraith 652923c42c1SMike Galbraith p = strchr(buf, '\n'); 653923c42c1SMike Galbraith if (p) 654923c42c1SMike Galbraith *p = 0; 655923c42c1SMike Galbraith 656923c42c1SMike Galbraith pthread_mutex_lock(&active_symbols_lock); 657923c42c1SMike Galbraith syme = list_entry(active_symbols.next, struct sym_entry, node); 658923c42c1SMike Galbraith pthread_mutex_unlock(&active_symbols_lock); 659923c42c1SMike Galbraith 660923c42c1SMike Galbraith list_for_each_entry_safe_from(syme, n, &active_symbols, node) { 66151a472deSArnaldo Carvalho de Melo struct symbol *sym = sym_entry__symbol(syme); 662923c42c1SMike Galbraith 663923c42c1SMike Galbraith if (!strcmp(buf, sym->name)) { 664923c42c1SMike Galbraith found = syme; 665923c42c1SMike Galbraith break; 666923c42c1SMike Galbraith } 667923c42c1SMike Galbraith } 668923c42c1SMike Galbraith 669923c42c1SMike Galbraith if (!found) { 670923c42c1SMike Galbraith fprintf(stderr, "Sorry, %s is not active.\n", sym_filter); 671923c42c1SMike Galbraith sleep(1); 672923c42c1SMike Galbraith return; 673923c42c1SMike Galbraith } else 674923c42c1SMike Galbraith parse_source(found); 675923c42c1SMike Galbraith 676923c42c1SMike Galbraith out_free: 677923c42c1SMike Galbraith free(buf); 678923c42c1SMike Galbraith } 679923c42c1SMike Galbraith 680091bd2e9SMike Galbraith static void print_mapped_keys(void) 681923c42c1SMike Galbraith { 682091bd2e9SMike Galbraith char *name = NULL; 683091bd2e9SMike Galbraith 684091bd2e9SMike Galbraith if (sym_filter_entry) { 68551a472deSArnaldo Carvalho de Melo struct symbol *sym = sym_entry__symbol(sym_filter_entry); 686091bd2e9SMike Galbraith name = sym->name; 687091bd2e9SMike Galbraith } 688091bd2e9SMike Galbraith 689091bd2e9SMike Galbraith fprintf(stdout, "\nMapped keys:\n"); 690091bd2e9SMike Galbraith fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", delay_secs); 691091bd2e9SMike Galbraith fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", print_entries); 692091bd2e9SMike Galbraith 693091bd2e9SMike Galbraith if (nr_counters > 1) 69446ab9764SMike Galbraith fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(sym_counter)); 695091bd2e9SMike Galbraith 696091bd2e9SMike Galbraith fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter); 697091bd2e9SMike Galbraith 698b32d133aSArnaldo Carvalho de Melo if (symbol_conf.vmlinux_name) { 699091bd2e9SMike Galbraith fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter); 700091bd2e9SMike Galbraith fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL"); 701091bd2e9SMike Galbraith fprintf(stdout, "\t[S] stop annotation.\n"); 702091bd2e9SMike Galbraith } 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': 728091bd2e9SMike Galbraith return 1; 729091bd2e9SMike Galbraith case 'E': 730091bd2e9SMike Galbraith case 'w': 731091bd2e9SMike Galbraith return nr_counters > 1 ? 1 : 0; 732091bd2e9SMike Galbraith case 'F': 733091bd2e9SMike Galbraith case 's': 734091bd2e9SMike Galbraith case 'S': 735b32d133aSArnaldo Carvalho de Melo return symbol_conf.vmlinux_name ? 1 : 0; 73683a0944fSIngo Molnar default: 73783a0944fSIngo Molnar break; 738091bd2e9SMike Galbraith } 739091bd2e9SMike Galbraith 740091bd2e9SMike Galbraith return 0; 741923c42c1SMike Galbraith } 742923c42c1SMike Galbraith 743923c42c1SMike Galbraith static void handle_keypress(int c) 744923c42c1SMike Galbraith { 745091bd2e9SMike Galbraith if (!key_mapped(c)) { 746091bd2e9SMike Galbraith struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; 747091bd2e9SMike Galbraith struct termios tc, save; 748091bd2e9SMike Galbraith 749091bd2e9SMike Galbraith print_mapped_keys(); 750091bd2e9SMike Galbraith fprintf(stdout, "\nEnter selection, or unmapped key to continue: "); 751091bd2e9SMike Galbraith fflush(stdout); 752091bd2e9SMike Galbraith 753091bd2e9SMike Galbraith tcgetattr(0, &save); 754091bd2e9SMike Galbraith tc = save; 755091bd2e9SMike Galbraith tc.c_lflag &= ~(ICANON | ECHO); 756091bd2e9SMike Galbraith tc.c_cc[VMIN] = 0; 757091bd2e9SMike Galbraith tc.c_cc[VTIME] = 0; 758091bd2e9SMike Galbraith tcsetattr(0, TCSANOW, &tc); 759091bd2e9SMike Galbraith 760091bd2e9SMike Galbraith poll(&stdin_poll, 1, -1); 761091bd2e9SMike Galbraith c = getc(stdin); 762091bd2e9SMike Galbraith 763091bd2e9SMike Galbraith tcsetattr(0, TCSAFLUSH, &save); 764091bd2e9SMike Galbraith if (!key_mapped(c)) 765091bd2e9SMike Galbraith return; 766091bd2e9SMike Galbraith } 767091bd2e9SMike Galbraith 768923c42c1SMike Galbraith switch (c) { 769923c42c1SMike Galbraith case 'd': 770923c42c1SMike Galbraith prompt_integer(&delay_secs, "Enter display delay"); 771dc79959aSTim Blechmann if (delay_secs < 1) 772dc79959aSTim Blechmann delay_secs = 1; 773923c42c1SMike Galbraith break; 774923c42c1SMike Galbraith case 'e': 775923c42c1SMike Galbraith prompt_integer(&print_entries, "Enter display entries (lines)"); 7763b6ed988SArnaldo Carvalho de Melo if (print_entries == 0) { 77713cc5079SArnaldo Carvalho de Melo sig_winch_handler(SIGWINCH); 7783b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, sig_winch_handler); 7793b6ed988SArnaldo Carvalho de Melo } else 7803b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, SIG_DFL); 781923c42c1SMike Galbraith break; 782923c42c1SMike Galbraith case 'E': 783923c42c1SMike Galbraith if (nr_counters > 1) { 784923c42c1SMike Galbraith int i; 785923c42c1SMike Galbraith 786923c42c1SMike Galbraith fprintf(stderr, "\nAvailable events:"); 787923c42c1SMike Galbraith for (i = 0; i < nr_counters; i++) 788923c42c1SMike Galbraith fprintf(stderr, "\n\t%d %s", i, event_name(i)); 789923c42c1SMike Galbraith 790923c42c1SMike Galbraith prompt_integer(&sym_counter, "Enter details event counter"); 791923c42c1SMike Galbraith 792923c42c1SMike Galbraith if (sym_counter >= nr_counters) { 793923c42c1SMike Galbraith fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(0)); 794923c42c1SMike Galbraith sym_counter = 0; 795923c42c1SMike Galbraith sleep(1); 796923c42c1SMike Galbraith } 797923c42c1SMike Galbraith } else sym_counter = 0; 798923c42c1SMike Galbraith break; 799923c42c1SMike Galbraith case 'f': 800923c42c1SMike Galbraith prompt_integer(&count_filter, "Enter display event count filter"); 801923c42c1SMike Galbraith break; 802923c42c1SMike Galbraith case 'F': 803923c42c1SMike Galbraith prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)"); 804923c42c1SMike Galbraith break; 8058ffcda17SArnaldo Carvalho de Melo case 'K': 8068ffcda17SArnaldo Carvalho de Melo hide_kernel_symbols = !hide_kernel_symbols; 8078ffcda17SArnaldo Carvalho de Melo break; 808923c42c1SMike Galbraith case 'q': 809923c42c1SMike Galbraith case 'Q': 810923c42c1SMike Galbraith printf("exiting.\n"); 811c338aee8SArnaldo Carvalho de Melo if (dump_symtab) 812c338aee8SArnaldo Carvalho de Melo dsos__fprintf(stderr); 813923c42c1SMike Galbraith exit(0); 814923c42c1SMike Galbraith case 's': 815923c42c1SMike Galbraith prompt_symbol(&sym_filter_entry, "Enter details symbol"); 816923c42c1SMike Galbraith break; 817923c42c1SMike Galbraith case 'S': 818923c42c1SMike Galbraith if (!sym_filter_entry) 819923c42c1SMike Galbraith break; 820923c42c1SMike Galbraith else { 821923c42c1SMike Galbraith struct sym_entry *syme = sym_filter_entry; 822923c42c1SMike Galbraith 823b269876cSArnaldo Carvalho de Melo pthread_mutex_lock(&syme->src->lock); 824923c42c1SMike Galbraith sym_filter_entry = NULL; 825923c42c1SMike Galbraith __zero_source_counters(syme); 826b269876cSArnaldo Carvalho de Melo pthread_mutex_unlock(&syme->src->lock); 827923c42c1SMike Galbraith } 828923c42c1SMike Galbraith break; 8298ffcda17SArnaldo Carvalho de Melo case 'U': 8308ffcda17SArnaldo Carvalho de Melo hide_user_symbols = !hide_user_symbols; 8318ffcda17SArnaldo Carvalho de Melo break; 83246ab9764SMike Galbraith case 'w': 83346ab9764SMike Galbraith display_weighted = ~display_weighted; 83446ab9764SMike Galbraith break; 835923c42c1SMike Galbraith case 'z': 836923c42c1SMike Galbraith zero = ~zero; 837923c42c1SMike Galbraith break; 83883a0944fSIngo Molnar default: 83983a0944fSIngo Molnar break; 840923c42c1SMike Galbraith } 841923c42c1SMike Galbraith } 842923c42c1SMike Galbraith 843f37a291cSIngo Molnar static void *display_thread(void *arg __used) 84486470930SIngo Molnar { 84586470930SIngo Molnar struct pollfd stdin_poll = { .fd = 0, .events = POLLIN }; 846923c42c1SMike Galbraith struct termios tc, save; 847923c42c1SMike Galbraith int delay_msecs, c; 84886470930SIngo Molnar 849923c42c1SMike Galbraith tcgetattr(0, &save); 850923c42c1SMike Galbraith tc = save; 851923c42c1SMike Galbraith tc.c_lflag &= ~(ICANON | ECHO); 852923c42c1SMike Galbraith tc.c_cc[VMIN] = 0; 853923c42c1SMike Galbraith tc.c_cc[VTIME] = 0; 854091bd2e9SMike Galbraith 855923c42c1SMike Galbraith repeat: 856923c42c1SMike Galbraith delay_msecs = delay_secs * 1000; 857923c42c1SMike Galbraith tcsetattr(0, TCSANOW, &tc); 858923c42c1SMike Galbraith /* trash return*/ 859923c42c1SMike Galbraith getc(stdin); 86086470930SIngo Molnar 86186470930SIngo Molnar do { 86286470930SIngo Molnar print_sym_table(); 86386470930SIngo Molnar } while (!poll(&stdin_poll, 1, delay_msecs) == 1); 86486470930SIngo Molnar 865923c42c1SMike Galbraith c = getc(stdin); 866923c42c1SMike Galbraith tcsetattr(0, TCSAFLUSH, &save); 867923c42c1SMike Galbraith 868923c42c1SMike Galbraith handle_keypress(c); 869923c42c1SMike Galbraith goto repeat; 87086470930SIngo Molnar 87186470930SIngo Molnar return NULL; 87286470930SIngo Molnar } 87386470930SIngo Molnar 8742ab52083SAnton Blanchard /* Tag samples to be skipped. */ 875f37a291cSIngo Molnar static const char *skip_symbols[] = { 8762ab52083SAnton Blanchard "default_idle", 8772ab52083SAnton Blanchard "cpu_idle", 8782ab52083SAnton Blanchard "enter_idle", 8792ab52083SAnton Blanchard "exit_idle", 8802ab52083SAnton Blanchard "mwait_idle", 88159b90056SArnaldo Carvalho de Melo "mwait_idle_with_hints", 8828357275bSArnaldo Carvalho de Melo "poll_idle", 8833a3393efSAnton Blanchard "ppc64_runlatch_off", 8843a3393efSAnton Blanchard "pseries_dedicated_idle_sleep", 8852ab52083SAnton Blanchard NULL 8862ab52083SAnton Blanchard }; 8872ab52083SAnton Blanchard 888439d473bSArnaldo Carvalho de Melo static int symbol_filter(struct map *map, struct symbol *sym) 88986470930SIngo Molnar { 89086470930SIngo Molnar struct sym_entry *syme; 89186470930SIngo Molnar const char *name = sym->name; 8922ab52083SAnton Blanchard int i; 89386470930SIngo Molnar 8943a3393efSAnton Blanchard /* 8953a3393efSAnton Blanchard * ppc64 uses function descriptors and appends a '.' to the 8963a3393efSAnton Blanchard * start of every instruction address. Remove it. 8973a3393efSAnton Blanchard */ 8983a3393efSAnton Blanchard if (name[0] == '.') 8993a3393efSAnton Blanchard name++; 9003a3393efSAnton Blanchard 90186470930SIngo Molnar if (!strcmp(name, "_text") || 90286470930SIngo Molnar !strcmp(name, "_etext") || 90386470930SIngo Molnar !strcmp(name, "_sinittext") || 90486470930SIngo Molnar !strncmp("init_module", name, 11) || 90586470930SIngo Molnar !strncmp("cleanup_module", name, 14) || 90686470930SIngo Molnar strstr(name, "_text_start") || 90786470930SIngo Molnar strstr(name, "_text_end")) 90886470930SIngo Molnar return 1; 90986470930SIngo Molnar 91000a192b3SArnaldo Carvalho de Melo syme = symbol__priv(sym); 911439d473bSArnaldo Carvalho de Melo syme->map = map; 912b269876cSArnaldo Carvalho de Melo syme->src = NULL; 913923c42c1SMike Galbraith if (!sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) 914923c42c1SMike Galbraith sym_filter_entry = syme; 915923c42c1SMike Galbraith 9162ab52083SAnton Blanchard for (i = 0; skip_symbols[i]; i++) { 9172ab52083SAnton Blanchard if (!strcmp(skip_symbols[i], name)) { 91886470930SIngo Molnar syme->skip = 1; 9192ab52083SAnton Blanchard break; 9202ab52083SAnton Blanchard } 9212ab52083SAnton Blanchard } 92286470930SIngo Molnar 92313cc5079SArnaldo Carvalho de Melo if (!syme->skip) 92413cc5079SArnaldo Carvalho de Melo syme->name_len = strlen(sym->name); 92513cc5079SArnaldo Carvalho de Melo 92686470930SIngo Molnar return 0; 92786470930SIngo Molnar } 92886470930SIngo Molnar 9295b2bb75aSArnaldo Carvalho de Melo static void event__process_sample(const event_t *self, int counter) 93086470930SIngo Molnar { 9315b2bb75aSArnaldo Carvalho de Melo u64 ip = self->ip.ip; 9325b2bb75aSArnaldo Carvalho de Melo struct sym_entry *syme; 9331ed091c4SArnaldo Carvalho de Melo struct addr_location al; 9348ffcda17SArnaldo Carvalho de Melo u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 93586470930SIngo Molnar 9368ffcda17SArnaldo Carvalho de Melo switch (origin) { 9371ed091c4SArnaldo Carvalho de Melo case PERF_RECORD_MISC_USER: 9388ffcda17SArnaldo Carvalho de Melo if (hide_user_symbols) 9398ffcda17SArnaldo Carvalho de Melo return; 9405b2bb75aSArnaldo Carvalho de Melo break; 9415b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_MISC_KERNEL: 9428ffcda17SArnaldo Carvalho de Melo if (hide_kernel_symbols) 9438ffcda17SArnaldo Carvalho de Melo return; 9445b2bb75aSArnaldo Carvalho de Melo break; 9455b2bb75aSArnaldo Carvalho de Melo default: 9465b2bb75aSArnaldo Carvalho de Melo return; 9475b2bb75aSArnaldo Carvalho de Melo } 9485b2bb75aSArnaldo Carvalho de Melo 9491ed091c4SArnaldo Carvalho de Melo if (event__preprocess_sample(self, &al, symbol_filter) < 0 || 9501ed091c4SArnaldo Carvalho de Melo al.sym == NULL) 9511ed091c4SArnaldo Carvalho de Melo return; 95286470930SIngo Molnar 9531ed091c4SArnaldo Carvalho de Melo syme = symbol__priv(al.sym); 95486470930SIngo Molnar if (!syme->skip) { 95586470930SIngo Molnar syme->count[counter]++; 9568ffcda17SArnaldo Carvalho de Melo syme->origin = origin; 957923c42c1SMike Galbraith record_precise_ip(syme, counter, ip); 95886470930SIngo Molnar pthread_mutex_lock(&active_symbols_lock); 95986470930SIngo Molnar if (list_empty(&syme->node) || !syme->node.next) 96086470930SIngo Molnar __list_insert_active_sym(syme); 96186470930SIngo Molnar pthread_mutex_unlock(&active_symbols_lock); 9621ed091c4SArnaldo Carvalho de Melo if (origin == PERF_RECORD_MISC_USER) 9631ed091c4SArnaldo Carvalho de Melo ++userspace_samples; 9645b2bb75aSArnaldo Carvalho de Melo ++samples; 96586470930SIngo Molnar } 96686470930SIngo Molnar } 96786470930SIngo Molnar 968d8f66248SArnaldo Carvalho de Melo static int event__process(event_t *event, struct perf_session *session) 9695b2bb75aSArnaldo Carvalho de Melo { 9705b2bb75aSArnaldo Carvalho de Melo switch (event->header.type) { 9715b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_COMM: 972d8f66248SArnaldo Carvalho de Melo event__process_comm(event, session); 9735b2bb75aSArnaldo Carvalho de Melo break; 9745b2bb75aSArnaldo Carvalho de Melo case PERF_RECORD_MMAP: 975d8f66248SArnaldo Carvalho de Melo event__process_mmap(event, session); 9765b2bb75aSArnaldo Carvalho de Melo break; 9775b2bb75aSArnaldo Carvalho de Melo default: 9785b2bb75aSArnaldo Carvalho de Melo break; 9795b2bb75aSArnaldo Carvalho de Melo } 9805b2bb75aSArnaldo Carvalho de Melo 9815b2bb75aSArnaldo Carvalho de Melo return 0; 98286470930SIngo Molnar } 98386470930SIngo Molnar 98486470930SIngo Molnar struct mmap_data { 98586470930SIngo Molnar int counter; 98686470930SIngo Molnar void *base; 987f37a291cSIngo Molnar int mask; 98886470930SIngo Molnar unsigned int prev; 98986470930SIngo Molnar }; 99086470930SIngo Molnar 99186470930SIngo Molnar static unsigned int mmap_read_head(struct mmap_data *md) 99286470930SIngo Molnar { 993cdd6c482SIngo Molnar struct perf_event_mmap_page *pc = md->base; 99486470930SIngo Molnar int head; 99586470930SIngo Molnar 99686470930SIngo Molnar head = pc->data_head; 99786470930SIngo Molnar rmb(); 99886470930SIngo Molnar 99986470930SIngo Molnar return head; 100086470930SIngo Molnar } 100186470930SIngo Molnar 1002d8f66248SArnaldo Carvalho de Melo static void perf_session__mmap_read_counter(struct perf_session *self, 1003d8f66248SArnaldo Carvalho de Melo struct mmap_data *md) 100486470930SIngo Molnar { 100586470930SIngo Molnar unsigned int head = mmap_read_head(md); 100686470930SIngo Molnar unsigned int old = md->prev; 100786470930SIngo Molnar unsigned char *data = md->base + page_size; 100886470930SIngo Molnar int diff; 100986470930SIngo Molnar 101086470930SIngo Molnar /* 101186470930SIngo Molnar * If we're further behind than half the buffer, there's a chance 101286470930SIngo Molnar * the writer will bite our tail and mess up the samples under us. 101386470930SIngo Molnar * 101486470930SIngo Molnar * If we somehow ended up ahead of the head, we got messed up. 101586470930SIngo Molnar * 101686470930SIngo Molnar * In either case, truncate and restart at head. 101786470930SIngo Molnar */ 101886470930SIngo Molnar diff = head - old; 101986470930SIngo Molnar if (diff > md->mask / 2 || diff < 0) { 1020f4f0b418SMike Galbraith fprintf(stderr, "WARNING: failed to keep up with mmap data.\n"); 102186470930SIngo Molnar 102286470930SIngo Molnar /* 102386470930SIngo Molnar * head points to a known good entry, start there. 102486470930SIngo Molnar */ 102586470930SIngo Molnar old = head; 102686470930SIngo Molnar } 102786470930SIngo Molnar 102886470930SIngo Molnar for (; old != head;) { 102986470930SIngo Molnar event_t *event = (event_t *)&data[old & md->mask]; 103086470930SIngo Molnar 103186470930SIngo Molnar event_t event_copy; 103286470930SIngo Molnar 103386470930SIngo Molnar size_t size = event->header.size; 103486470930SIngo Molnar 103586470930SIngo Molnar /* 103686470930SIngo Molnar * Event straddles the mmap boundary -- header should always 103786470930SIngo Molnar * be inside due to u64 alignment of output. 103886470930SIngo Molnar */ 103986470930SIngo Molnar if ((old & md->mask) + size != ((old + size) & md->mask)) { 104086470930SIngo Molnar unsigned int offset = old; 104186470930SIngo Molnar unsigned int len = min(sizeof(*event), size), cpy; 104286470930SIngo Molnar void *dst = &event_copy; 104386470930SIngo Molnar 104486470930SIngo Molnar do { 104586470930SIngo Molnar cpy = min(md->mask + 1 - (offset & md->mask), len); 104686470930SIngo Molnar memcpy(dst, &data[offset & md->mask], cpy); 104786470930SIngo Molnar offset += cpy; 104886470930SIngo Molnar dst += cpy; 104986470930SIngo Molnar len -= cpy; 105086470930SIngo Molnar } while (len); 105186470930SIngo Molnar 105286470930SIngo Molnar event = &event_copy; 105386470930SIngo Molnar } 105486470930SIngo Molnar 10555b2bb75aSArnaldo Carvalho de Melo if (event->header.type == PERF_RECORD_SAMPLE) 10565b2bb75aSArnaldo Carvalho de Melo event__process_sample(event, md->counter); 10575b2bb75aSArnaldo Carvalho de Melo else 1058d8f66248SArnaldo Carvalho de Melo event__process(event, self); 105986470930SIngo Molnar old += size; 106086470930SIngo Molnar } 106186470930SIngo Molnar 106286470930SIngo Molnar md->prev = old; 106386470930SIngo Molnar } 106486470930SIngo Molnar 106586470930SIngo Molnar static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS]; 106686470930SIngo Molnar static struct mmap_data mmap_array[MAX_NR_CPUS][MAX_COUNTERS]; 106786470930SIngo Molnar 1068d8f66248SArnaldo Carvalho de Melo static void perf_session__mmap_read(struct perf_session *self) 10692f01190aSFrederic Weisbecker { 10702f01190aSFrederic Weisbecker int i, counter; 10712f01190aSFrederic Weisbecker 10722f01190aSFrederic Weisbecker for (i = 0; i < nr_cpus; i++) { 10732f01190aSFrederic Weisbecker for (counter = 0; counter < nr_counters; counter++) 1074d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read_counter(self, &mmap_array[i][counter]); 10752f01190aSFrederic Weisbecker } 10762f01190aSFrederic Weisbecker } 10772f01190aSFrederic Weisbecker 1078716c69feSIngo Molnar int nr_poll; 1079716c69feSIngo Molnar int group_fd; 1080716c69feSIngo Molnar 1081716c69feSIngo Molnar static void start_counter(int i, int counter) 108286470930SIngo Molnar { 1083cdd6c482SIngo Molnar struct perf_event_attr *attr; 10840fdc7e67SMike Galbraith int cpu; 108586470930SIngo Molnar 108686470930SIngo Molnar cpu = profile_cpu; 108786470930SIngo Molnar if (target_pid == -1 && profile_cpu == -1) 108886470930SIngo Molnar cpu = i; 108986470930SIngo Molnar 109086470930SIngo Molnar attr = attrs + counter; 109186470930SIngo Molnar 109286470930SIngo Molnar attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID; 10937e4ff9e3SMike Galbraith 10947e4ff9e3SMike Galbraith if (freq) { 10957e4ff9e3SMike Galbraith attr->sample_type |= PERF_SAMPLE_PERIOD; 10967e4ff9e3SMike Galbraith attr->freq = 1; 10977e4ff9e3SMike Galbraith attr->sample_freq = freq; 10987e4ff9e3SMike Galbraith } 10997e4ff9e3SMike Galbraith 11000fdc7e67SMike Galbraith attr->inherit = (cpu < 0) && inherit; 11015b2bb75aSArnaldo Carvalho de Melo attr->mmap = 1; 110286470930SIngo Molnar 1103716c69feSIngo Molnar try_again: 1104cdd6c482SIngo Molnar fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0); 1105716c69feSIngo Molnar 110686470930SIngo Molnar if (fd[i][counter] < 0) { 110786470930SIngo Molnar int err = errno; 110886470930SIngo Molnar 1109c10edee2SPekka Enberg if (err == EPERM || err == EACCES) 1110716c69feSIngo Molnar die("No permission - are you root?\n"); 1111716c69feSIngo Molnar /* 1112716c69feSIngo Molnar * If it's cycles then fall back to hrtimer 1113716c69feSIngo Molnar * based cpu-clock-tick sw counter, which 1114716c69feSIngo Molnar * is always available even if no PMU support: 1115716c69feSIngo Molnar */ 1116716c69feSIngo Molnar if (attr->type == PERF_TYPE_HARDWARE 1117f4dbfa8fSPeter Zijlstra && attr->config == PERF_COUNT_HW_CPU_CYCLES) { 1118716c69feSIngo Molnar 11193da297a6SIngo Molnar if (verbose) 1120716c69feSIngo Molnar warning(" ... trying to fall back to cpu-clock-ticks\n"); 11213da297a6SIngo Molnar 1122716c69feSIngo Molnar attr->type = PERF_TYPE_SOFTWARE; 1123f4dbfa8fSPeter Zijlstra attr->config = PERF_COUNT_SW_CPU_CLOCK; 1124716c69feSIngo Molnar goto try_again; 1125716c69feSIngo Molnar } 112630c806a0SIngo Molnar printf("\n"); 112730c806a0SIngo Molnar error("perfcounter syscall returned with %d (%s)\n", 112830c806a0SIngo Molnar fd[i][counter], strerror(err)); 1129cdd6c482SIngo Molnar die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); 113086470930SIngo Molnar exit(-1); 113186470930SIngo Molnar } 113286470930SIngo Molnar assert(fd[i][counter] >= 0); 113386470930SIngo Molnar fcntl(fd[i][counter], F_SETFL, O_NONBLOCK); 113486470930SIngo Molnar 113586470930SIngo Molnar /* 113686470930SIngo Molnar * First counter acts as the group leader: 113786470930SIngo Molnar */ 113886470930SIngo Molnar if (group && group_fd == -1) 113986470930SIngo Molnar group_fd = fd[i][counter]; 114086470930SIngo Molnar 114186470930SIngo Molnar event_array[nr_poll].fd = fd[i][counter]; 114286470930SIngo Molnar event_array[nr_poll].events = POLLIN; 114386470930SIngo Molnar nr_poll++; 114486470930SIngo Molnar 114586470930SIngo Molnar mmap_array[i][counter].counter = counter; 114686470930SIngo Molnar mmap_array[i][counter].prev = 0; 114786470930SIngo Molnar mmap_array[i][counter].mask = mmap_pages*page_size - 1; 114886470930SIngo Molnar mmap_array[i][counter].base = mmap(NULL, (mmap_pages+1)*page_size, 114986470930SIngo Molnar PROT_READ, MAP_SHARED, fd[i][counter], 0); 115086470930SIngo Molnar if (mmap_array[i][counter].base == MAP_FAILED) 115186470930SIngo Molnar die("failed to mmap with %d (%s)\n", errno, strerror(errno)); 115286470930SIngo Molnar } 1153716c69feSIngo Molnar 1154716c69feSIngo Molnar static int __cmd_top(void) 1155716c69feSIngo Molnar { 1156716c69feSIngo Molnar pthread_t thread; 1157716c69feSIngo Molnar int i, counter; 1158716c69feSIngo Molnar int ret; 1159d8f66248SArnaldo Carvalho de Melo /* 1160d8f66248SArnaldo Carvalho de Melo * XXX perf_session__new should allow passing a O_MMAP, so that all this 1161d8f66248SArnaldo Carvalho de Melo * mmap reading, etc is encapsulated in it. 1162d8f66248SArnaldo Carvalho de Melo */ 1163d8f66248SArnaldo Carvalho de Melo struct perf_session *session = NULL; 1164716c69feSIngo Molnar 11655b2bb75aSArnaldo Carvalho de Melo if (target_pid != -1) 1166d8f66248SArnaldo Carvalho de Melo event__synthesize_thread(target_pid, event__process, session); 11675b2bb75aSArnaldo Carvalho de Melo else 1168d8f66248SArnaldo Carvalho de Melo event__synthesize_threads(event__process, session); 11695b2bb75aSArnaldo Carvalho de Melo 1170716c69feSIngo Molnar for (i = 0; i < nr_cpus; i++) { 1171716c69feSIngo Molnar group_fd = -1; 1172716c69feSIngo Molnar for (counter = 0; counter < nr_counters; counter++) 1173716c69feSIngo Molnar start_counter(i, counter); 117486470930SIngo Molnar } 117586470930SIngo Molnar 11762f01190aSFrederic Weisbecker /* Wait for a minimal set of events before starting the snapshot */ 11772f01190aSFrederic Weisbecker poll(event_array, nr_poll, 100); 11782f01190aSFrederic Weisbecker 1179d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read(session); 11802f01190aSFrederic Weisbecker 118186470930SIngo Molnar if (pthread_create(&thread, NULL, display_thread, NULL)) { 118286470930SIngo Molnar printf("Could not create display thread.\n"); 118386470930SIngo Molnar exit(-1); 118486470930SIngo Molnar } 118586470930SIngo Molnar 118686470930SIngo Molnar if (realtime_prio) { 118786470930SIngo Molnar struct sched_param param; 118886470930SIngo Molnar 118986470930SIngo Molnar param.sched_priority = realtime_prio; 119086470930SIngo Molnar if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { 119186470930SIngo Molnar printf("Could not set realtime priority.\n"); 119286470930SIngo Molnar exit(-1); 119386470930SIngo Molnar } 119486470930SIngo Molnar } 119586470930SIngo Molnar 119686470930SIngo Molnar while (1) { 119786470930SIngo Molnar int hits = samples; 119886470930SIngo Molnar 1199d8f66248SArnaldo Carvalho de Melo perf_session__mmap_read(session); 120086470930SIngo Molnar 120186470930SIngo Molnar if (hits == samples) 120286470930SIngo Molnar ret = poll(event_array, nr_poll, 100); 120386470930SIngo Molnar } 120486470930SIngo Molnar 120586470930SIngo Molnar return 0; 120686470930SIngo Molnar } 120786470930SIngo Molnar 120886470930SIngo Molnar static const char * const top_usage[] = { 120986470930SIngo Molnar "perf top [<options>]", 121086470930SIngo Molnar NULL 121186470930SIngo Molnar }; 121286470930SIngo Molnar 121386470930SIngo Molnar static const struct option options[] = { 121486470930SIngo Molnar OPT_CALLBACK('e', "event", NULL, "event", 121586470930SIngo Molnar "event selector. use 'perf list' to list available events", 121686470930SIngo Molnar parse_events), 121786470930SIngo Molnar OPT_INTEGER('c', "count", &default_interval, 121886470930SIngo Molnar "event period to sample"), 121986470930SIngo Molnar OPT_INTEGER('p', "pid", &target_pid, 122086470930SIngo Molnar "profile events on existing pid"), 122186470930SIngo Molnar OPT_BOOLEAN('a', "all-cpus", &system_wide, 122286470930SIngo Molnar "system-wide collection from all CPUs"), 122386470930SIngo Molnar OPT_INTEGER('C', "CPU", &profile_cpu, 122486470930SIngo Molnar "CPU to profile on"), 1225b32d133aSArnaldo Carvalho de Melo OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, 1226b32d133aSArnaldo Carvalho de Melo "file", "vmlinux pathname"), 12278ffcda17SArnaldo Carvalho de Melo OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols, 12288ffcda17SArnaldo Carvalho de Melo "hide kernel symbols"), 122986470930SIngo Molnar OPT_INTEGER('m', "mmap-pages", &mmap_pages, 123086470930SIngo Molnar "number of mmap data pages"), 123186470930SIngo Molnar OPT_INTEGER('r', "realtime", &realtime_prio, 123286470930SIngo Molnar "collect data with this RT SCHED_FIFO priority"), 123386470930SIngo Molnar OPT_INTEGER('d', "delay", &delay_secs, 123486470930SIngo Molnar "number of seconds to delay between refreshes"), 123586470930SIngo Molnar OPT_BOOLEAN('D', "dump-symtab", &dump_symtab, 123686470930SIngo Molnar "dump the symbol table used for profiling"), 123786470930SIngo Molnar OPT_INTEGER('f', "count-filter", &count_filter, 123886470930SIngo Molnar "only display functions with more events than this"), 123986470930SIngo Molnar OPT_BOOLEAN('g', "group", &group, 124086470930SIngo Molnar "put the counters into a counter group"), 12410fdc7e67SMike Galbraith OPT_BOOLEAN('i', "inherit", &inherit, 12420fdc7e67SMike Galbraith "child tasks inherit counters"), 1243923c42c1SMike Galbraith OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name", 1244923c42c1SMike Galbraith "symbol to annotate - requires -k option"), 12451f208ea6SAnton Blanchard OPT_BOOLEAN('z', "zero", &zero, 124686470930SIngo Molnar "zero history across updates"), 124786470930SIngo Molnar OPT_INTEGER('F', "freq", &freq, 124886470930SIngo Molnar "profile at this frequency"), 124986470930SIngo Molnar OPT_INTEGER('E', "entries", &print_entries, 125086470930SIngo Molnar "display this many functions"), 12518ffcda17SArnaldo Carvalho de Melo OPT_BOOLEAN('U', "hide_user_symbols", &hide_user_symbols, 12528ffcda17SArnaldo Carvalho de Melo "hide user symbols"), 12533da297a6SIngo Molnar OPT_BOOLEAN('v', "verbose", &verbose, 12543da297a6SIngo Molnar "be more verbose (show counter open errors, etc)"), 125586470930SIngo Molnar OPT_END() 125686470930SIngo Molnar }; 125786470930SIngo Molnar 1258f37a291cSIngo Molnar int cmd_top(int argc, const char **argv, const char *prefix __used) 125986470930SIngo Molnar { 1260b32d133aSArnaldo Carvalho de Melo int counter; 126186470930SIngo Molnar 126286470930SIngo Molnar page_size = sysconf(_SC_PAGE_SIZE); 126386470930SIngo Molnar 126486470930SIngo Molnar argc = parse_options(argc, argv, options, top_usage, 0); 126586470930SIngo Molnar if (argc) 126686470930SIngo Molnar usage_with_options(top_usage, options); 126786470930SIngo Molnar 126886470930SIngo Molnar /* CPU and PID are mutually exclusive */ 126986470930SIngo Molnar if (target_pid != -1 && profile_cpu != -1) { 127086470930SIngo Molnar printf("WARNING: PID switch overriding CPU\n"); 127186470930SIngo Molnar sleep(1); 127286470930SIngo Molnar profile_cpu = -1; 127386470930SIngo Molnar } 127486470930SIngo Molnar 127586470930SIngo Molnar if (!nr_counters) 127686470930SIngo Molnar nr_counters = 1; 127786470930SIngo Molnar 1278b32d133aSArnaldo Carvalho de Melo symbol_conf.priv_size = (sizeof(struct sym_entry) + 12795a8e5a30SArnaldo Carvalho de Melo (nr_counters + 1) * sizeof(unsigned long)); 1280b32d133aSArnaldo Carvalho de Melo if (symbol_conf.vmlinux_name == NULL) 1281b32d133aSArnaldo Carvalho de Melo symbol_conf.try_vmlinux_path = true; 1282b32d133aSArnaldo Carvalho de Melo if (symbol__init(&symbol_conf) < 0) 1283b32d133aSArnaldo Carvalho de Melo return -1; 12845a8e5a30SArnaldo Carvalho de Melo 128586470930SIngo Molnar if (delay_secs < 1) 128686470930SIngo Molnar delay_secs = 1; 128786470930SIngo Molnar 1288923c42c1SMike Galbraith parse_source(sym_filter_entry); 128986470930SIngo Molnar 12907e4ff9e3SMike Galbraith /* 12917e4ff9e3SMike Galbraith * User specified count overrides default frequency. 12927e4ff9e3SMike Galbraith */ 12937e4ff9e3SMike Galbraith if (default_interval) 12947e4ff9e3SMike Galbraith freq = 0; 12957e4ff9e3SMike Galbraith else if (freq) { 12967e4ff9e3SMike Galbraith default_interval = freq; 12977e4ff9e3SMike Galbraith } else { 12987e4ff9e3SMike Galbraith fprintf(stderr, "frequency and count are zero, aborting\n"); 12997e4ff9e3SMike Galbraith exit(EXIT_FAILURE); 13007e4ff9e3SMike Galbraith } 13017e4ff9e3SMike Galbraith 130286470930SIngo Molnar /* 130386470930SIngo Molnar * Fill in the ones not specifically initialized via -c: 130486470930SIngo Molnar */ 130586470930SIngo Molnar for (counter = 0; counter < nr_counters; counter++) { 130686470930SIngo Molnar if (attrs[counter].sample_period) 130786470930SIngo Molnar continue; 130886470930SIngo Molnar 130986470930SIngo Molnar attrs[counter].sample_period = default_interval; 131086470930SIngo Molnar } 131186470930SIngo Molnar 131286470930SIngo Molnar nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); 131386470930SIngo Molnar assert(nr_cpus <= MAX_NR_CPUS); 131486470930SIngo Molnar assert(nr_cpus >= 0); 131586470930SIngo Molnar 131686470930SIngo Molnar if (target_pid != -1 || profile_cpu != -1) 131786470930SIngo Molnar nr_cpus = 1; 131886470930SIngo Molnar 131913cc5079SArnaldo Carvalho de Melo get_term_dimensions(&winsize); 13203b6ed988SArnaldo Carvalho de Melo if (print_entries == 0) { 132113cc5079SArnaldo Carvalho de Melo update_print_entries(&winsize); 13223b6ed988SArnaldo Carvalho de Melo signal(SIGWINCH, sig_winch_handler); 13233b6ed988SArnaldo Carvalho de Melo } 13243b6ed988SArnaldo Carvalho de Melo 132586470930SIngo Molnar return __cmd_top(); 132686470930SIngo Molnar } 1327