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 .freq = 1000, /* 1 KHz */
78 static bool system_wide = false;
80 static bool use_tui, use_stdio;
82 static int default_interval = 0;
84 static bool inherit = false;
85 static int realtime_prio = 0;
86 static bool group = false;
87 static unsigned int page_size;
88 static unsigned int mmap_pages = 128;
90 static bool dump_symtab = false;
92 static struct winsize winsize;
94 static const char *sym_filter = NULL;
95 struct sym_entry *sym_filter_entry_sched = NULL;
96 static int sym_pcnt_filter = 5;
102 void get_term_dimensions(struct winsize *ws)
104 char *s = getenv("LINES");
107 ws->ws_row = atoi(s);
108 s = getenv("COLUMNS");
110 ws->ws_col = atoi(s);
111 if (ws->ws_row && ws->ws_col)
116 if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
117 ws->ws_row && ws->ws_col)
124 static void update_print_entries(struct winsize *ws)
126 top.print_entries = ws->ws_row;
128 if (top.print_entries > 9)
129 top.print_entries -= 9;
132 static void sig_winch_handler(int sig __used)
134 get_term_dimensions(&winsize);
135 update_print_entries(&winsize);
138 static int parse_source(struct sym_entry *syme)
141 struct annotation *notes;
148 sym = sym_entry__symbol(syme);
152 * We can't annotate with just /proc/kallsyms
154 if (map->dso->origin == DSO__ORIG_KERNEL) {
155 pr_err("Can't annotate %s: No vmlinux file was found in the "
156 "path\n", sym->name);
161 notes = symbol__annotation(sym);
162 if (notes->src != NULL) {
163 pthread_mutex_lock(¬es->lock);
167 pthread_mutex_lock(¬es->lock);
169 if (symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) {
170 pthread_mutex_unlock(¬es->lock);
171 pr_err("Not enough memory for annotating '%s' symbol!\n",
177 err = symbol__annotate(sym, syme->map, 0);
180 top.sym_filter_entry = syme;
183 pthread_mutex_unlock(¬es->lock);
187 static void __zero_source_counters(struct sym_entry *syme)
189 struct symbol *sym = sym_entry__symbol(syme);
190 symbol__annotate_zero_histograms(sym);
193 static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
195 struct annotation *notes;
198 if (syme != top.sym_filter_entry)
201 sym = sym_entry__symbol(syme);
202 notes = symbol__annotation(sym);
204 if (pthread_mutex_trylock(¬es->lock))
207 ip = syme->map->map_ip(syme->map, ip);
208 symbol__inc_addr_samples(sym, syme->map, counter, ip);
210 pthread_mutex_unlock(¬es->lock);
213 static void show_details(struct sym_entry *syme)
215 struct annotation *notes;
216 struct symbol *symbol;
222 symbol = sym_entry__symbol(syme);
223 notes = symbol__annotation(symbol);
225 pthread_mutex_lock(¬es->lock);
227 if (notes->src == NULL)
230 printf("Showing %s for %s\n", event_name(top.sym_evsel), symbol->name);
231 printf(" Events Pcnt (>=%d%%)\n", sym_pcnt_filter);
233 more = symbol__annotate_printf(symbol, syme->map, top.sym_evsel->idx,
234 0, sym_pcnt_filter, top.print_entries, 4);
236 symbol__annotate_zero_histogram(symbol, top.sym_evsel->idx);
238 symbol__annotate_decay_histogram(symbol, top.sym_evsel->idx);
240 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
242 pthread_mutex_unlock(¬es->lock);
245 static const char CONSOLE_CLEAR[] = "
\e[H
\e[2J";
247 static void __list_insert_active_sym(struct sym_entry *syme)
249 list_add(&syme->node, &top.active_symbols);
252 static void print_sym_table(struct perf_session *session)
257 struct sym_entry *syme;
258 struct rb_root tmp = RB_ROOT;
259 const int win_width = winsize.ws_col - 1;
260 int sym_width, dso_width, dso_short_width;
261 float sum_ksamples = perf_top__decay_samples(&top, &tmp);
265 perf_top__header_snprintf(&top, bf, sizeof(bf));
268 perf_top__reset_sample_counters(&top);
270 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
272 if (session->hists.stats.total_lost != 0) {
273 color_fprintf(stdout, PERF_COLOR_RED, "WARNING:");
274 printf(" LOST %" PRIu64 " events, Check IO/CPU overload\n",
275 session->hists.stats.total_lost);
278 if (top.sym_filter_entry) {
279 show_details(top.sym_filter_entry);
283 perf_top__find_widths(&top, &tmp, &dso_width, &dso_short_width,
286 if (sym_width + dso_width > winsize.ws_col - 29) {
287 dso_width = dso_short_width;
288 if (sym_width + dso_width > winsize.ws_col - 29)
289 sym_width = winsize.ws_col - dso_width - 29;
292 if (top.evlist->nr_entries == 1)
293 printf(" samples pcnt");
295 printf(" weight samples pcnt");
299 printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
300 printf(" %s _______ _____",
301 top.evlist->nr_entries == 1 ? " " : "______");
303 printf(" ________________");
304 printf(" %-*.*s", sym_width, sym_width, graph_line);
305 printf(" %-*.*s", dso_width, dso_width, graph_line);
308 for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
312 syme = rb_entry(nd, struct sym_entry, rb_node);
313 sym = sym_entry__symbol(syme);
314 if (++printed > top.print_entries ||
315 (int)syme->snap_count < top.count_filter)
318 pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
321 if (top.evlist->nr_entries == 1 || !top.display_weighted)
322 printf("%20.2f ", syme->weight);
324 printf("%9.1f %10ld ", syme->weight, syme->snap_count);
326 percent_color_fprintf(stdout, "%4.1f%%", pcnt);
328 printf(" %016" PRIx64, sym->start);
329 printf(" %-*.*s", sym_width, sym_width, sym->name);
330 printf(" %-*.*s\n", dso_width, dso_width,
331 dso_width >= syme->map->dso->long_name_len ?
332 syme->map->dso->long_name :
333 syme->map->dso->short_name);
337 static void prompt_integer(int *target, const char *msg)
339 char *buf = malloc(0), *p;
343 fprintf(stdout, "\n%s: ", msg);
344 if (getline(&buf, &dummy, stdin) < 0)
347 p = strchr(buf, '\n');
357 tmp = strtoul(buf, NULL, 10);
363 static void prompt_percent(int *target, const char *msg)
367 prompt_integer(&tmp, msg);
368 if (tmp >= 0 && tmp <= 100)
372 static void prompt_symbol(struct sym_entry **target, const char *msg)
374 char *buf = malloc(0), *p;
375 struct sym_entry *syme = *target, *n, *found = NULL;
378 /* zero counters of active symbol */
380 __zero_source_counters(syme);
384 fprintf(stdout, "\n%s: ", msg);
385 if (getline(&buf, &dummy, stdin) < 0)
388 p = strchr(buf, '\n');
392 pthread_mutex_lock(&top.active_symbols_lock);
393 syme = list_entry(top.active_symbols.next, struct sym_entry, node);
394 pthread_mutex_unlock(&top.active_symbols_lock);
396 list_for_each_entry_safe_from(syme, n, &top.active_symbols, node) {
397 struct symbol *sym = sym_entry__symbol(syme);
399 if (!strcmp(buf, sym->name)) {
406 fprintf(stderr, "Sorry, %s is not active.\n", buf);
416 static void print_mapped_keys(void)
420 if (top.sym_filter_entry) {
421 struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
425 fprintf(stdout, "\nMapped keys:\n");
426 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top.delay_secs);
427 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top.print_entries);
429 if (top.evlist->nr_entries > 1)
430 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", event_name(top.sym_evsel));
432 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top.count_filter);
434 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
435 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
436 fprintf(stdout, "\t[S] stop annotation.\n");
438 if (top.evlist->nr_entries > 1)
439 fprintf(stdout, "\t[w] toggle display weighted/count[E]r. \t(%d)\n", top.display_weighted ? 1 : 0);
442 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
443 top.hide_kernel_symbols ? "yes" : "no");
445 "\t[U] hide user symbols. \t(%s)\n",
446 top.hide_user_symbols ? "yes" : "no");
447 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top.zero ? 1 : 0);
448 fprintf(stdout, "\t[qQ] quit.\n");
451 static int key_mapped(int c)
468 return top.evlist->nr_entries > 1 ? 1 : 0;
476 static void handle_keypress(struct perf_session *session, int c)
478 if (!key_mapped(c)) {
479 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
480 struct termios tc, save;
483 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
488 tc.c_lflag &= ~(ICANON | ECHO);
491 tcsetattr(0, TCSANOW, &tc);
493 poll(&stdin_poll, 1, -1);
496 tcsetattr(0, TCSAFLUSH, &save);
503 prompt_integer(&top.delay_secs, "Enter display delay");
504 if (top.delay_secs < 1)
508 prompt_integer(&top.print_entries, "Enter display entries (lines)");
509 if (top.print_entries == 0) {
510 sig_winch_handler(SIGWINCH);
511 signal(SIGWINCH, sig_winch_handler);
513 signal(SIGWINCH, SIG_DFL);
516 if (top.evlist->nr_entries > 1) {
517 fprintf(stderr, "\nAvailable events:");
519 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
520 fprintf(stderr, "\n\t%d %s", top.sym_evsel->idx, event_name(top.sym_evsel));
522 prompt_integer(&top.sym_counter, "Enter details event counter");
524 if (top.sym_counter >= top.evlist->nr_entries) {
525 top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
527 fprintf(stderr, "Sorry, no such event, using %s.\n", event_name(top.sym_evsel));
531 list_for_each_entry(top.sym_evsel, &top.evlist->entries, node)
532 if (top.sym_evsel->idx == top.sym_counter)
534 } else top.sym_counter = 0;
537 prompt_integer(&top.count_filter, "Enter display event count filter");
540 prompt_percent(&sym_pcnt_filter, "Enter details display event filter (percent)");
543 top.hide_kernel_symbols = !top.hide_kernel_symbols;
547 printf("exiting.\n");
549 perf_session__fprintf_dsos(session, stderr);
552 prompt_symbol(&top.sym_filter_entry, "Enter details symbol");
555 if (!top.sym_filter_entry)
558 struct sym_entry *syme = top.sym_filter_entry;
560 top.sym_filter_entry = NULL;
561 __zero_source_counters(syme);
565 top.hide_user_symbols = !top.hide_user_symbols;
568 top.display_weighted = ~top.display_weighted;
571 top.zero = !top.zero;
578 static void *display_thread_tui(void *arg __used)
580 perf_top__tui_browser(&top);
586 static void *display_thread(void *arg __used)
588 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
589 struct termios tc, save;
591 struct perf_session *session = (struct perf_session *) arg;
595 tc.c_lflag &= ~(ICANON | ECHO);
600 delay_msecs = top.delay_secs * 1000;
601 tcsetattr(0, TCSANOW, &tc);
606 print_sym_table(session);
607 } while (!poll(&stdin_poll, 1, delay_msecs) == 1);
610 tcsetattr(0, TCSAFLUSH, &save);
612 handle_keypress(session, c);
618 /* Tag samples to be skipped. */
619 static const char *skip_symbols[] = {
626 "mwait_idle_with_hints",
628 "ppc64_runlatch_off",
629 "pseries_dedicated_idle_sleep",
633 static int symbol_filter(struct map *map, struct symbol *sym)
635 struct sym_entry *syme;
636 const char *name = sym->name;
640 * ppc64 uses function descriptors and appends a '.' to the
641 * start of every instruction address. Remove it.
646 if (!strcmp(name, "_text") ||
647 !strcmp(name, "_etext") ||
648 !strcmp(name, "_sinittext") ||
649 !strncmp("init_module", name, 11) ||
650 !strncmp("cleanup_module", name, 14) ||
651 strstr(name, "_text_start") ||
652 strstr(name, "_text_end"))
655 syme = symbol__priv(sym);
657 symbol__annotate_init(map, sym);
659 if (!top.sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
660 /* schedule initial sym_filter_entry setup */
661 sym_filter_entry_sched = syme;
665 for (i = 0; skip_symbols[i]; i++) {
666 if (!strcmp(skip_symbols[i], name)) {
675 static void perf_event__process_sample(const union perf_event *event,
676 struct perf_sample *sample,
677 struct perf_session *session)
679 u64 ip = event->ip.ip;
680 struct sym_entry *syme;
681 struct addr_location al;
682 struct machine *machine;
683 u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
688 case PERF_RECORD_MISC_USER:
690 if (top.hide_user_symbols)
692 machine = perf_session__find_host_machine(session);
694 case PERF_RECORD_MISC_KERNEL:
695 ++top.kernel_samples;
696 if (top.hide_kernel_symbols)
698 machine = perf_session__find_host_machine(session);
700 case PERF_RECORD_MISC_GUEST_KERNEL:
701 ++top.guest_kernel_samples;
702 machine = perf_session__find_machine(session, event->ip.pid);
704 case PERF_RECORD_MISC_GUEST_USER:
705 ++top.guest_us_samples;
707 * TODO: we don't process guest user from host side
708 * except simple counting.
715 if (!machine && perf_guest) {
716 pr_err("Can't find guest [%d]'s kernel information\n",
721 if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
724 if (perf_event__preprocess_sample(event, session, &al, sample,
725 symbol_filter) < 0 ||
729 if (al.sym == NULL) {
731 * As we do lazy loading of symtabs we only will know if the
732 * specified vmlinux file is invalid when we actually have a
733 * hit in kernel space and then try to load it. So if we get
734 * here and there are _no_ symbols in the DSO backing the
735 * kernel map, bail out.
737 * We may never get here, for instance, if we use -K/
738 * --hide-kernel-symbols, even if the user specifies an
739 * invalid --vmlinux ;-)
741 if (al.map == machine->vmlinux_maps[MAP__FUNCTION] &&
742 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
743 ui__warning("The %s file can't be used\n",
744 symbol_conf.vmlinux_name);
752 /* let's see, whether we need to install initial sym_filter_entry */
753 if (sym_filter_entry_sched) {
754 top.sym_filter_entry = sym_filter_entry_sched;
755 sym_filter_entry_sched = NULL;
756 if (parse_source(top.sym_filter_entry) < 0) {
757 struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
759 pr_err("Can't annotate %s", sym->name);
760 if (top.sym_filter_entry->map->dso->origin == DSO__ORIG_KERNEL) {
761 pr_err(": No vmlinux file was found in the path:\n");
762 machine__fprintf_vmlinux_path(machine, stderr);
769 syme = symbol__priv(al.sym);
771 struct perf_evsel *evsel;
773 syme->origin = origin;
774 evsel = perf_evlist__id2evsel(top.evlist, sample->id);
775 assert(evsel != NULL);
776 syme->count[evsel->idx]++;
777 record_precise_ip(syme, evsel->idx, ip);
778 pthread_mutex_lock(&top.active_symbols_lock);
779 if (list_empty(&syme->node) || !syme->node.next)
780 __list_insert_active_sym(syme);
781 pthread_mutex_unlock(&top.active_symbols_lock);
785 static void perf_session__mmap_read_cpu(struct perf_session *self, int cpu)
787 struct perf_sample sample;
788 union perf_event *event;
790 while ((event = perf_evlist__read_on_cpu(top.evlist, cpu)) != NULL) {
791 perf_session__parse_sample(self, event, &sample);
793 if (event->header.type == PERF_RECORD_SAMPLE)
794 perf_event__process_sample(event, &sample, self);
796 perf_event__process(event, &sample, self);
800 static void perf_session__mmap_read(struct perf_session *self)
804 for (i = 0; i < top.evlist->cpus->nr; i++)
805 perf_session__mmap_read_cpu(self, i);
808 static void start_counters(struct perf_evlist *evlist)
810 struct perf_evsel *counter;
812 list_for_each_entry(counter, &evlist->entries, node) {
813 struct perf_event_attr *attr = &counter->attr;
815 attr->sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
818 attr->sample_type |= PERF_SAMPLE_PERIOD;
820 attr->sample_freq = top.freq;
823 if (evlist->nr_entries > 1) {
824 attr->sample_type |= PERF_SAMPLE_ID;
825 attr->read_format |= PERF_FORMAT_ID;
830 if (perf_evsel__open(counter, top.evlist->cpus,
831 top.evlist->threads, group, inherit) < 0) {
834 if (err == EPERM || err == EACCES)
835 die("Permission error - are you root?\n"
836 "\t Consider tweaking"
837 " /proc/sys/kernel/perf_event_paranoid.\n");
839 * If it's cycles then fall back to hrtimer
840 * based cpu-clock-tick sw counter, which
841 * is always available even if no PMU support:
843 if (attr->type == PERF_TYPE_HARDWARE &&
844 attr->config == PERF_COUNT_HW_CPU_CYCLES) {
847 warning(" ... trying to fall back to cpu-clock-ticks\n");
849 attr->type = PERF_TYPE_SOFTWARE;
850 attr->config = PERF_COUNT_SW_CPU_CLOCK;
854 error("sys_perf_event_open() syscall returned with %d "
855 "(%s). /bin/dmesg may provide additional information.\n",
857 die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
862 if (perf_evlist__mmap(evlist, mmap_pages, false) < 0)
863 die("failed to mmap with %d (%s)\n", errno, strerror(errno));
866 static int __cmd_top(void)
869 struct perf_evsel *first;
872 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
873 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
875 struct perf_session *session = perf_session__new(NULL, O_WRONLY, false, false, NULL);
879 if (top.target_tid != -1)
880 perf_event__synthesize_thread_map(top.evlist->threads,
881 perf_event__process, session);
883 perf_event__synthesize_threads(perf_event__process, session);
885 start_counters(top.evlist);
886 first = list_entry(top.evlist->entries.next, struct perf_evsel, node);
887 perf_session__set_sample_type(session, first->attr.sample_type);
889 /* Wait for a minimal set of events before starting the snapshot */
890 poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
892 perf_session__mmap_read(session);
894 if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui :
895 display_thread), session)) {
896 printf("Could not create display thread.\n");
901 struct sched_param param;
903 param.sched_priority = realtime_prio;
904 if (sched_setscheduler(0, SCHED_FIFO, ¶m)) {
905 printf("Could not set realtime priority.\n");
911 u64 hits = top.samples;
913 perf_session__mmap_read(session);
915 if (hits == top.samples)
916 ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
922 static const char * const top_usage[] = {
923 "perf top [<options>]",
927 static const struct option options[] = {
928 OPT_CALLBACK('e', "event", &top.evlist, "event",
929 "event selector. use 'perf list' to list available events",
931 OPT_INTEGER('c', "count", &default_interval,
932 "event period to sample"),
933 OPT_INTEGER('p', "pid", &top.target_pid,
934 "profile events on existing process id"),
935 OPT_INTEGER('t', "tid", &top.target_tid,
936 "profile events on existing thread id"),
937 OPT_BOOLEAN('a', "all-cpus", &system_wide,
938 "system-wide collection from all CPUs"),
939 OPT_STRING('C', "cpu", &top.cpu_list, "cpu",
940 "list of cpus to monitor"),
941 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
942 "file", "vmlinux pathname"),
943 OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
944 "hide kernel symbols"),
945 OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
946 OPT_INTEGER('r', "realtime", &realtime_prio,
947 "collect data with this RT SCHED_FIFO priority"),
948 OPT_INTEGER('d', "delay", &top.delay_secs,
949 "number of seconds to delay between refreshes"),
950 OPT_BOOLEAN('D', "dump-symtab", &dump_symtab,
951 "dump the symbol table used for profiling"),
952 OPT_INTEGER('f', "count-filter", &top.count_filter,
953 "only display functions with more events than this"),
954 OPT_BOOLEAN('g', "group", &group,
955 "put the counters into a counter group"),
956 OPT_BOOLEAN('i', "inherit", &inherit,
957 "child tasks inherit counters"),
958 OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
959 "symbol to annotate"),
960 OPT_BOOLEAN('z', "zero", &top.zero,
961 "zero history across updates"),
962 OPT_INTEGER('F', "freq", &top.freq,
963 "profile at this frequency"),
964 OPT_INTEGER('E', "entries", &top.print_entries,
965 "display this many functions"),
966 OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
967 "hide user symbols"),
968 OPT_BOOLEAN(0, "tui", &use_tui, "Use the TUI interface"),
969 OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
970 OPT_INCR('v', "verbose", &verbose,
971 "be more verbose (show counter open errors, etc)"),
975 int cmd_top(int argc, const char **argv, const char *prefix __used)
977 struct perf_evsel *pos;
978 int status = -ENOMEM;
980 top.evlist = perf_evlist__new(NULL, NULL);
981 if (top.evlist == NULL)
984 page_size = sysconf(_SC_PAGE_SIZE);
986 argc = parse_options(argc, argv, options, top_usage, 0);
988 usage_with_options(top_usage, options);
991 * XXX For now start disabled, only using TUI if explicitely asked for.
992 * Change that when handle_keys equivalent gets written, live annotation
1002 setup_browser(false);
1004 /* CPU and PID are mutually exclusive */
1005 if (top.target_tid > 0 && top.cpu_list) {
1006 printf("WARNING: PID switch overriding CPU\n");
1008 top.cpu_list = NULL;
1011 if (top.target_pid != -1)
1012 top.target_tid = top.target_pid;
1014 if (perf_evlist__create_maps(top.evlist, top.target_pid,
1015 top.target_tid, top.cpu_list) < 0)
1016 usage_with_options(top_usage, options);
1018 if (!top.evlist->nr_entries &&
1019 perf_evlist__add_default(top.evlist) < 0) {
1020 pr_err("Not enough memory for event selector list\n");
1024 if (top.delay_secs < 1)
1028 * User specified count overrides default frequency.
1030 if (default_interval)
1032 else if (top.freq) {
1033 default_interval = top.freq;
1035 fprintf(stderr, "frequency and count are zero, aborting\n");
1039 list_for_each_entry(pos, &top.evlist->entries, node) {
1040 if (perf_evsel__alloc_fd(pos, top.evlist->cpus->nr,
1041 top.evlist->threads->nr) < 0)
1044 * Fill in the ones not specifically initialized via -c:
1046 if (pos->attr.sample_period)
1049 pos->attr.sample_period = default_interval;
1052 if (perf_evlist__alloc_pollfd(top.evlist) < 0 ||
1053 perf_evlist__alloc_mmap(top.evlist) < 0)
1056 top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
1058 symbol_conf.priv_size = (sizeof(struct sym_entry) + sizeof(struct annotation) +
1059 (top.evlist->nr_entries + 1) * sizeof(unsigned long));
1061 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1062 if (symbol__init() < 0)
1065 get_term_dimensions(&winsize);
1066 if (top.print_entries == 0) {
1067 update_print_entries(&winsize);
1068 signal(SIGWINCH, sig_winch_handler);
1071 status = __cmd_top();
1073 perf_evlist__delete(top.evlist);