4 * Builtin top command: Display a continuously updated profile of
5 * any workload, CPU or specific PID.
7 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
9 * Improvements and fixes by:
11 * Arjan van de Ven <arjan@linux.intel.com>
12 * Yanmin Zhang <yanmin.zhang@intel.com>
13 * Wu Fengguang <fengguang.wu@intel.com>
14 * Mike Galbraith <efault@gmx.de>
15 * Paul Mackerras <paulus@samba.org>
17 * Released under the GPL v2. (and only v2, not any later version)
23 #include "util/annotate.h"
24 #include "util/cache.h"
25 #include "util/color.h"
26 #include "util/evlist.h"
27 #include "util/evsel.h"
28 #include "util/session.h"
29 #include "util/symbol.h"
30 #include "util/thread.h"
31 #include "util/thread_map.h"
33 #include "util/util.h"
34 #include <linux/rbtree.h>
35 #include "util/parse-options.h"
36 #include "util/parse-events.h"
37 #include "util/cpumap.h"
38 #include "util/xyarray.h"
40 #include "util/debug.h"
54 #include <sys/syscall.h>
55 #include <sys/ioctl.h>
57 #include <sys/prctl.h>
62 #include <linux/unistd.h>
63 #include <linux/types.h>
65 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
67 static struct perf_top top = {
70 .display_weighted = -1,
73 .active_symbols = LIST_HEAD_INIT(top.active_symbols),
74 .active_symbols_lock = PTHREAD_MUTEX_INITIALIZER,
75 .active_symbols_cond = PTHREAD_COND_INITIALIZER,
76 .freq = 1000, /* 1 KHz */
79 static bool system_wide = false;
81 static bool use_tui, use_stdio;
83 static int default_interval = 0;
85 static bool inherit = false;
86 static int realtime_prio = 0;
87 static bool group = false;
88 static unsigned int page_size;
89 static unsigned int mmap_pages = 128;
91 static bool dump_symtab = false;
93 static struct winsize winsize;
95 static const char *sym_filter = NULL;
96 struct sym_entry *sym_filter_entry_sched = NULL;
97 static int sym_pcnt_filter = 5;
103 void get_term_dimensions(struct winsize *ws)
105 char *s = getenv("LINES");
108 ws->ws_row = atoi(s);
109 s = getenv("COLUMNS");
111 ws->ws_col = atoi(s);
112 if (ws->ws_row && ws->ws_col)
117 if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
118 ws->ws_row && ws->ws_col)
125 static void update_print_entries(struct winsize *ws)
127 top.print_entries = ws->ws_row;
129 if (top.print_entries > 9)
130 top.print_entries -= 9;
133 static void sig_winch_handler(int sig __used)
135 get_term_dimensions(&winsize);
136 update_print_entries(&winsize);
139 static int parse_source(struct sym_entry *syme)
142 struct annotation *notes;
149 sym = sym_entry__symbol(syme);
153 * We can't annotate with just /proc/kallsyms
155 if (map->dso->origin == DSO__ORIG_KERNEL) {
156 pr_err("Can't annotate %s: No vmlinux file was found in the "
157 "path\n", sym->name);
162 notes = symbol__annotation(sym);
163 if (notes->src != NULL) {
164 pthread_mutex_lock(¬es->lock);
168 pthread_mutex_lock(¬es->lock);
170 if (symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) {
171 pthread_mutex_unlock(¬es->lock);
172 pr_err("Not enough memory for annotating '%s' symbol!\n",
178 err = symbol__annotate(sym, syme->map, 0);
181 top.sym_filter_entry = syme;
184 pthread_mutex_unlock(¬es->lock);
188 static void __zero_source_counters(struct sym_entry *syme)
190 struct symbol *sym = sym_entry__symbol(syme);
191 symbol__annotate_zero_histograms(sym);
194 static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
196 struct annotation *notes;
199 if (syme != top.sym_filter_entry)
202 sym = sym_entry__symbol(syme);
203 notes = symbol__annotation(sym);
205 if (pthread_mutex_trylock(¬es->lock))
208 ip = syme->map->map_ip(syme->map, ip);
209 symbol__inc_addr_samples(sym, syme->map, counter, ip);
211 pthread_mutex_unlock(¬es->lock);
214 static void show_details(struct sym_entry *syme)
216 struct annotation *notes;
217 struct symbol *symbol;
223 symbol = sym_entry__symbol(syme);
224 notes = symbol__annotation(symbol);
226 pthread_mutex_lock(¬es->lock);
228 if (notes->src == NULL)
231 printf("Showing %s for %s\n", event_name(top.sym_evsel), symbol->name);
232 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
234 more = symbol__annotate_printf(symbol, syme->map, top.sym_evsel->idx,
235 0, sym_pcnt_filter, top.print_entries, 4);
237 symbol__annotate_zero_histogram(symbol, top.sym_evsel->idx);
239 symbol__annotate_decay_histogram(symbol, top.sym_evsel->idx);
241 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
243 pthread_mutex_unlock(¬es->lock);
246 static const char CONSOLE_CLEAR[] = "
\e[H
\e[2J";
248 static void __list_insert_active_sym(struct sym_entry *syme)
250 list_add(&syme->node, &top.active_symbols);
253 static void print_sym_table(struct perf_session *session)
258 struct sym_entry *syme;
259 struct rb_root tmp = RB_ROOT;
260 const int win_width = winsize.ws_col - 1;
261 int sym_width, dso_width, dso_short_width;
262 float sum_ksamples = perf_top__decay_samples(&top, &tmp);
266 perf_top__header_snprintf(&top, bf, sizeof(bf));
269 perf_top__reset_sample_counters(&top);
271 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
273 if (session->hists.stats.total_lost != 0) {
274 color_fprintf(stdout, PERF_COLOR_RED, "WARNING:");
275 printf(" LOST %" PRIu64 " events, Check IO/CPU overload\n",
276 session->hists.stats.total_lost);
279 if (top.sym_filter_entry) {
280 show_details(top.sym_filter_entry);
284 perf_top__find_widths(&top, &tmp, &dso_width, &dso_short_width,
287 if (sym_width + dso_width > winsize.ws_col - 29) {
288 dso_width = dso_short_width;
289 if (sym_width + dso_width > winsize.ws_col - 29)
290 sym_width = winsize.ws_col - dso_width - 29;
293 if (top.evlist->nr_entries == 1)
294 printf(" samples pcnt");
296 printf(" weight samples pcnt");
300 printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
301 printf(" %s _______ _____",
302 top.evlist->nr_entries == 1 ? " " : "______");
304 printf(" ________________");
305 printf(" %-*.*s", sym_width, sym_width, graph_line);
306 printf(" %-*.*s", dso_width, dso_width, graph_line);
309 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
313 syme = rb_entry(nd, struct sym_entry, rb_node);
314 sym = sym_entry__symbol(syme);
315 if (++printed > top.print_entries ||
316 (int)syme->snap_count < top.count_filter)
319 pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
322 if (top.evlist->nr_entries == 1 || !top.display_weighted)
323 printf("%20.2f ", syme->weight);
325 printf("%9.1f %10ld ", syme->weight, syme->snap_count);
327 percent_color_fprintf(stdout, "%4.1f%%", pcnt);
329 printf(" %016" PRIx64, sym->start);
330 printf(" %-*.*s", sym_width, sym_width, sym->name);
331 printf(" %-*.*s\n", dso_width, dso_width,
332 dso_width >= syme->map->dso->long_name_len ?
333 syme->map->dso->long_name :
334 syme->map->dso->short_name);
338 static void prompt_integer(int *target, const char *msg)
340 char *buf = malloc(0), *p;
344 fprintf(stdout, "\n%s: ", msg);
345 if (getline(&buf, &dummy, stdin) < 0)
348 p = strchr(buf, '\n');
358 tmp = strtoul(buf, NULL, 10);
364 static void prompt_percent(int *target, const char *msg)
368 prompt_integer(&tmp, msg);
369 if (tmp >= 0 && tmp <= 100)
373 static void prompt_symbol(struct sym_entry **target, const char *msg)
375 char *buf = malloc(0), *p;
376 struct sym_entry *syme = *target, *n, *found = NULL;
379 /* zero counters of active symbol */
381 __zero_source_counters(syme);
385 fprintf(stdout, "\n%s: ", msg);
386 if (getline(&buf, &dummy, stdin) < 0)
389 p = strchr(buf, '\n');
393 pthread_mutex_lock(&top.active_symbols_lock);
394 syme = list_entry(top.active_symbols.next, struct sym_entry, node);
395 pthread_mutex_unlock(&top.active_symbols_lock);
397 list_for_each_entry_safe_from(syme, n, &top.active_symbols, node) {
398 struct symbol *sym = sym_entry__symbol(syme);
400 if (!strcmp(buf, sym->name)) {
407 fprintf(stderr, "Sorry, %s is not active.\n", buf);
417 static void print_mapped_keys(void)
421 if (top.sym_filter_entry) {
422 struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
426 fprintf(stdout, "\nMapped keys:\n");
427 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top.delay_secs);
428 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top.print_entries);
430 if (top.evlist->nr_entries > 1)
431 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(top.sym_evsel));
433 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top.count_filter);
435 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
436 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
437 fprintf(stdout, "\t[S] stop annotation.\n");
439 if (top.evlist->nr_entries > 1)
440 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", top.display_weighted ? 1 : 0);
443 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
444 top.hide_kernel_symbols ? "yes" : "no");
446 "\t[U] hide user symbols. \t(%s)\n",
447 top.hide_user_symbols ? "yes" : "no");
448 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top.zero ? 1 : 0);
449 fprintf(stdout, "\t[qQ] quit.\n");
452 static int key_mapped(int c)
469 return top.evlist->nr_entries > 1 ? 1 : 0;
477 static void handle_keypress(struct perf_session *session, int c)
479 if (!key_mapped(c)) {
480 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
481 struct termios tc, save;
484 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
489 tc.c_lflag &= ~(ICANON | ECHO);
492 tcsetattr(0, TCSANOW, &tc);
494 poll(&stdin_poll, 1, -1);
497 tcsetattr(0, TCSAFLUSH, &save);
504 prompt_integer(&top.delay_secs, "Enter display delay");
505 if (top.delay_secs < 1)
509 prompt_integer(&top.print_entries, "Enter display entries (lines)");
510 if (top.print_entries == 0) {
511 sig_winch_handler(SIGWINCH);
512 signal(SIGWINCH, sig_winch_handler);
514 signal(SIGWINCH, SIG_DFL);
517 if (top.evlist->nr_entries > 1) {
518 fprintf(stderr, "\nAvailable events:");
520 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
521 fprintf(stderr, "\n\t%d %s", top.sym_evsel->idx, event_name(top.sym_evsel));
523 prompt_integer(&top.sym_counter, "Enter details event counter");
525 if (top.sym_counter >= top.evlist->nr_entries) {
526 top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
528 fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top.sym_evsel));
532 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
533 if (top.sym_evsel->idx == top.sym_counter)
535 } else top.sym_counter = 0;
538 prompt_integer(&top.count_filter, "Enter display event count filter");
541 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
544 top.hide_kernel_symbols = !top.hide_kernel_symbols;
548 printf("exiting.\n");
550 perf_session__fprintf_dsos(session, stderr);
553 prompt_symbol(&top.sym_filter_entry, "Enter details symbol");
556 if (!top.sym_filter_entry)
559 struct sym_entry *syme = top.sym_filter_entry;
561 top.sym_filter_entry = NULL;
562 __zero_source_counters(syme);
566 top.hide_user_symbols = !top.hide_user_symbols;
569 top.display_weighted = ~top.display_weighted;
572 top.zero = !top.zero;
579 static void *display_thread_tui(void *arg __used)
582 pthread_mutex_lock(&top.active_symbols_lock);
583 while (list_empty(&top.active_symbols)) {
584 err = pthread_cond_wait(&top.active_symbols_cond,
585 &top.active_symbols_lock);
589 pthread_mutex_unlock(&top.active_symbols_lock);
591 perf_top__tui_browser(&top);
597 static void *display_thread(void *arg __used)
599 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
600 struct termios tc, save;
602 struct perf_session *session = (struct perf_session *) arg;
606 tc.c_lflag &= ~(ICANON | ECHO);
611 delay_msecs = top.delay_secs * 1000;
612 tcsetattr(0, TCSANOW, &tc);
617 print_sym_table(session);
618 } while (!poll(&stdin_poll, 1, delay_msecs) == 1);
621 tcsetattr(0, TCSAFLUSH, &save);
623 handle_keypress(session, c);
629 /* Tag samples to be skipped. */
630 static const char *skip_symbols[] = {
637 "mwait_idle_with_hints",
639 "ppc64_runlatch_off",
640 "pseries_dedicated_idle_sleep",
644 static int symbol_filter(struct map *map, struct symbol *sym)
646 struct sym_entry *syme;
647 const char *name = sym->name;
651 * ppc64 uses function descriptors and appends a '.' to the
652 * start of every instruction address. Remove it.
657 if (!strcmp(name, "_text") ||
658 !strcmp(name, "_etext") ||
659 !strcmp(name, "_sinittext") ||
660 !strncmp("init_module", name, 11) ||
661 !strncmp("cleanup_module", name, 14) ||
662 strstr(name, "_text_start") ||
663 strstr(name, "_text_end"))
666 syme = symbol__priv(sym);
668 symbol__annotate_init(map, sym);
670 if (!top.sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
671 /* schedule initial sym_filter_entry setup */
672 sym_filter_entry_sched = syme;
676 for (i = 0; skip_symbols[i]; i++) {
677 if (!strcmp(skip_symbols[i], name)) {
686 static void perf_event__process_sample(const union perf_event *event,
687 struct perf_sample *sample,
688 struct perf_session *session)
690 u64 ip = event->ip.ip;
691 struct sym_entry *syme;
692 struct addr_location al;
693 struct machine *machine;
694 u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
699 case PERF_RECORD_MISC_USER:
701 if (top.hide_user_symbols)
703 machine = perf_session__find_host_machine(session);
705 case PERF_RECORD_MISC_KERNEL:
706 ++top.kernel_samples;
707 if (top.hide_kernel_symbols)
709 machine = perf_session__find_host_machine(session);
711 case PERF_RECORD_MISC_GUEST_KERNEL:
712 ++top.guest_kernel_samples;
713 machine = perf_session__find_machine(session, event->ip.pid);
715 case PERF_RECORD_MISC_GUEST_USER:
716 ++top.guest_us_samples;
718 * TODO: we don't process guest user from host side
719 * except simple counting.
726 if (!machine && perf_guest) {
727 pr_err("Can't find guest [%d]'s kernel information\n",
732 if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
735 if (perf_event__preprocess_sample(event, session, &al, sample,
736 symbol_filter) < 0 ||
740 if (al.sym == NULL) {
742 * As we do lazy loading of symtabs we only will know if the
743 * specified vmlinux file is invalid when we actually have a
744 * hit in kernel space and then try to load it. So if we get
745 * here and there are _no_ symbols in the DSO backing the
746 * kernel map, bail out.
748 * We may never get here, for instance, if we use -K/
749 * --hide-kernel-symbols, even if the user specifies an
750 * invalid --vmlinux ;-)
752 if (al.map == machine->vmlinux_maps[MAP__FUNCTION] &&
753 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
754 ui__warning("The %s file can't be used\n",
755 symbol_conf.vmlinux_name);
763 /* let's see, whether we need to install initial sym_filter_entry */
764 if (sym_filter_entry_sched) {
765 top.sym_filter_entry = sym_filter_entry_sched;
766 sym_filter_entry_sched = NULL;
767 if (parse_source(top.sym_filter_entry) < 0) {
768 struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
770 pr_err("Can't annotate %s", sym->name);
771 if (top.sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) {
772 pr_err(": No vmlinux file was found in the path:\n");
773 machine__fprintf_vmlinux_path(machine, stderr);
780 syme = symbol__priv(al.sym);
782 struct perf_evsel *evsel;
784 syme->origin = origin;
785 evsel = perf_evlist__id2evsel(top.evlist, sample->id);
786 assert(evsel != NULL);
787 syme->count[evsel->idx]++;
788 record_precise_ip(syme, evsel->idx, ip);
789 pthread_mutex_lock(&top.active_symbols_lock);
790 if (list_empty(&syme->node) || !syme->node.next) {
791 static bool first = true;
792 __list_insert_active_sym(syme);
794 pthread_cond_broadcast(&top.active_symbols_cond);
798 pthread_mutex_unlock(&top.active_symbols_lock);
802 static void perf_session__mmap_read_cpu(struct perf_session *self, int cpu)
804 struct perf_sample sample;
805 union perf_event *event;
807 while ((event = perf_evlist__read_on_cpu(top.evlist, cpu)) != NULL) {
808 perf_session__parse_sample(self, event, &sample);
810 if (event->header.type == PERF_RECORD_SAMPLE)
811 perf_event__process_sample(event, &sample, self);
813 perf_event__process(event, &sample, self);
817 static void perf_session__mmap_read(struct perf_session *self)
821 for (i = 0; i < top.evlist->cpus->nr; i++)
822 perf_session__mmap_read_cpu(self, i);
825 static void start_counters(struct perf_evlist *evlist)
827 struct perf_evsel *counter;
829 list_for_each_entry(counter, &evlist->entries, node) {
830 struct perf_event_attr *attr = &counter->attr;
832 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
835 attr->sample_type |= PERF_SAMPLE_PERIOD;
837 attr->sample_freq = top.freq;
840 if (evlist->nr_entries > 1) {
841 attr->sample_type |= PERF_SAMPLE_ID;
842 attr->read_format |= PERF_FORMAT_ID;
847 if (perf_evsel__open(counter, top.evlist->cpus,
848 top.evlist->threads, group, inherit) < 0) {
851 if (err == EPERM || err == EACCES)
852 die("Permission error - are you root?\n"
853 "\t Consider tweaking"
854 " /proc/sys/kernel/perf_event_paranoid.\n");
856 * If it's cycles then fall back to hrtimer
857 * based cpu-clock-tick sw counter, which
858 * is always available even if no PMU support:
860 if (attr->type == PERF_TYPE_HARDWARE &&
861 attr->config == PERF_COUNT_HW_CPU_CYCLES) {
864 warning(" ... trying to fall back to cpu-clock-ticks\n");
866 attr->type = PERF_TYPE_SOFTWARE;
867 attr->config = PERF_COUNT_SW_CPU_CLOCK;
871 error("sys_perf_event_open() syscall returned with %d "
872 "(%s). /bin/dmesg may provide additional information.\n",
874 die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
879 if (perf_evlist__mmap(evlist, mmap_pages, false) < 0)
880 die("failed to mmap with %d (%s)\n", errno, strerror(errno));
883 static int __cmd_top(void)
888 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
889 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
891 struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false, NULL);
895 if (top.target_tid != -1)
896 perf_event__synthesize_thread_map(top.evlist->threads,
897 perf_event__process, session);
899 perf_event__synthesize_threads(perf_event__process, session);
901 start_counters(top.evlist);
902 session->evlist = top.evlist;
903 perf_session__update_sample_type(session);
905 /* Wait for a minimal set of events before starting the snapshot */
906 poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
908 perf_session__mmap_read(session);
910 if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui :
911 display_thread), session)) {
912 printf("Could not create display thread.\n");
917 struct sched_param param;
919 param.sched_priority = realtime_prio;
920 if (sched_setscheduler(0, SCHED_FIFO, ¶m)) {
921 printf("Could not set realtime priority.\n");
927 u64 hits = top.samples;
929 perf_session__mmap_read(session);
931 if (hits == top.samples)
932 ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
938 static const char * const top_usage[] = {
939 "perf top [<options>]",
943 static const struct option options[] = {
944 OPT_CALLBACK('e', "event", &top.evlist, "event",
945 "event selector. use 'perf list' to list available events",
947 OPT_INTEGER('c', "count", &default_interval,
948 "event period to sample"),
949 OPT_INTEGER('p', "pid", &top.target_pid,
950 "profile events on existing process id"),
951 OPT_INTEGER('t', "tid", &top.target_tid,
952 "profile events on existing thread id"),
953 OPT_BOOLEAN('a', "all-cpus", &system_wide,
954 "system-wide collection from all CPUs"),
955 OPT_STRING('C', "cpu", &top.cpu_list, "cpu",
956 "list of cpus to monitor"),
957 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
958 "file", "vmlinux pathname"),
959 OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
960 "hide kernel symbols"),
961 OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
962 OPT_INTEGER('r', "realtime", &realtime_prio,
963 "collect data with this RT SCHED_FIFO priority"),
964 OPT_INTEGER('d', "delay", &top.delay_secs,
965 "number of seconds to delay between refreshes"),
966 OPT_BOOLEAN('D', "dump-symtab", &dump_symtab,
967 "dump the symbol table used for profiling"),
968 OPT_INTEGER('f', "count-filter", &top.count_filter,
969 "only display functions with more events than this"),
970 OPT_BOOLEAN('g', "group", &group,
971 "put the counters into a counter group"),
972 OPT_BOOLEAN('i', "inherit", &inherit,
973 "child tasks inherit counters"),
974 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
975 "symbol to annotate"),
976 OPT_BOOLEAN('z', "zero", &top.zero,
977 "zero history across updates"),
978 OPT_INTEGER('F', "freq", &top.freq,
979 "profile at this frequency"),
980 OPT_INTEGER('E', "entries", &top.print_entries,
981 "display this many functions"),
982 OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
983 "hide user symbols"),
984 OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"),
985 OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
986 OPT_INCR('v', "verbose", &verbose,
987 "be more verbose (show counter open errors, etc)"),
991 int cmd_top(int argc, const char **argv, const char *prefix __used)
993 struct perf_evsel *pos;
994 int status = -ENOMEM;
996 top.evlist = perf_evlist__new(NULL, NULL);
997 if (top.evlist == NULL)
1000 page_size = sysconf(_SC_PAGE_SIZE);
1002 argc = parse_options(argc, argv, options, top_usage, 0);
1004 usage_with_options(top_usage, options);
1007 * XXX For now start disabled, only using TUI if explicitely asked for.
1008 * Change that when handle_keys equivalent gets written, live annotation
1018 setup_browser(false);
1020 /* CPU and PID are mutually exclusive */
1021 if (top.target_tid > 0 && top.cpu_list) {
1022 printf("WARNING: PID switch overriding CPU\n");
1024 top.cpu_list = NULL;
1027 if (top.target_pid != -1)
1028 top.target_tid = top.target_pid;
1030 if (perf_evlist__create_maps(top.evlist, top.target_pid,
1031 top.target_tid, top.cpu_list) < 0)
1032 usage_with_options(top_usage, options);
1034 if (!top.evlist->nr_entries &&
1035 perf_evlist__add_default(top.evlist) < 0) {
1036 pr_err("Not enough memory for event selector list\n");
1040 if (top.delay_secs < 1)
1044 * User specified count overrides default frequency.
1046 if (default_interval)
1048 else if (top.freq) {
1049 default_interval = top.freq;
1051 fprintf(stderr, "frequency and count are zero, aborting\n");
1055 list_for_each_entry(pos, &top.evlist->entries, node) {
1056 if (perf_evsel__alloc_fd(pos, top.evlist->cpus->nr,
1057 top.evlist->threads->nr) < 0)
1060 * Fill in the ones not specifically initialized via -c:
1062 if (pos->attr.sample_period)
1065 pos->attr.sample_period = default_interval;
1068 if (perf_evlist__alloc_pollfd(top.evlist) < 0 ||
1069 perf_evlist__alloc_mmap(top.evlist) < 0)
1072 top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
1074 symbol_conf.priv_size = (sizeof(struct sym_entry) + sizeof(struct annotation) +
1075 (top.evlist->nr_entries + 1) * sizeof(unsigned long));
1077 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1078 if (symbol__init() < 0)
1081 get_term_dimensions(&winsize);
1082 if (top.print_entries == 0) {
1083 update_print_entries(&winsize);
1084 signal(SIGWINCH, sig_winch_handler);
1087 status = __cmd_top();
1089 perf_evlist__delete(top.evlist);