1 // SPDX-License-Identifier: GPL-2.0-only
5 * Builtin top command: Display a continuously updated profile of
6 * any workload, CPU or specific PID.
8 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
9 * 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
11 * Improvements and fixes by:
13 * Arjan van de Ven <arjan@linux.intel.com>
14 * Yanmin Zhang <yanmin.zhang@intel.com>
15 * Wu Fengguang <fengguang.wu@intel.com>
16 * Mike Galbraith <efault@gmx.de>
17 * Paul Mackerras <paulus@samba.org>
23 #include "util/annotate.h"
24 #include "util/bpf-event.h"
25 #include "util/config.h"
26 #include "util/color.h"
28 #include "util/evlist.h"
29 #include "util/evsel.h"
30 #include "util/event.h"
31 #include "util/machine.h"
33 #include "util/session.h"
34 #include "util/symbol.h"
35 #include "util/synthetic-events.h"
37 #include "util/util.h"
38 #include <linux/rbtree.h>
39 #include <subcmd/parse-options.h>
40 #include "util/parse-events.h"
41 #include "util/callchain.h"
42 #include "util/cpumap.h"
43 #include "util/sort.h"
44 #include "util/string2.h"
45 #include "util/term.h"
46 #include "util/intlist.h"
47 #include "util/parse-branch-options.h"
48 #include "arch/common.h"
51 #include "util/debug.h"
52 #include "util/ordered-events.h"
68 #include <sys/syscall.h>
69 #include <sys/ioctl.h>
71 #include <sys/prctl.h>
74 #include <sys/utsname.h>
77 #include <linux/stringify.h>
78 #include <linux/time64.h>
79 #include <linux/types.h>
80 #include <linux/err.h>
82 #include <linux/ctype.h>
84 static volatile int done
;
85 static volatile int resize
;
87 #define HEADER_LINE_NR 5
89 static void perf_top__update_print_entries(struct perf_top
*top
)
91 top
->print_entries
= top
->winsize
.ws_row
- HEADER_LINE_NR
;
94 static void winch_sig(int sig __maybe_unused
)
99 static void perf_top__resize(struct perf_top
*top
)
101 get_term_dimensions(&top
->winsize
);
102 perf_top__update_print_entries(top
);
105 static int perf_top__parse_source(struct perf_top
*top
, struct hist_entry
*he
)
109 struct annotation
*notes
;
113 if (!he
|| !he
->ms
.sym
)
116 evsel
= hists_to_evsel(he
->hists
);
122 * We can't annotate with just /proc/kallsyms
124 if (map
->dso
->symtab_type
== DSO_BINARY_TYPE__KALLSYMS
&&
125 !dso__is_kcore(map
->dso
)) {
126 pr_err("Can't annotate %s: No vmlinux file was found in the "
127 "path\n", sym
->name
);
132 notes
= symbol__annotation(sym
);
133 pthread_mutex_lock(¬es
->lock
);
135 if (!symbol__hists(sym
, top
->evlist
->core
.nr_entries
)) {
136 pthread_mutex_unlock(¬es
->lock
);
137 pr_err("Not enough memory for annotating '%s' symbol!\n",
143 err
= symbol__annotate(sym
, map
, evsel
, 0, &top
->annotation_opts
, NULL
);
145 top
->sym_filter_entry
= he
;
148 symbol__strerror_disassemble(sym
, map
, err
, msg
, sizeof(msg
));
149 pr_err("Couldn't annotate %s: %s\n", sym
->name
, msg
);
152 pthread_mutex_unlock(¬es
->lock
);
156 static void __zero_source_counters(struct hist_entry
*he
)
158 struct symbol
*sym
= he
->ms
.sym
;
159 symbol__annotate_zero_histograms(sym
);
162 static void ui__warn_map_erange(struct map
*map
, struct symbol
*sym
, u64 ip
)
165 int err
= uname(&uts
);
167 ui__warning("Out of bounds address found:\n\n"
168 "Addr: %" PRIx64
"\n"
170 "Map: %" PRIx64
"-%" PRIx64
"\n"
171 "Symbol: %" PRIx64
"-%" PRIx64
" %c %s\n"
175 "Not all samples will be on the annotation output.\n\n"
176 "Please report to linux-kernel@vger.kernel.org\n",
177 ip
, map
->dso
->long_name
, dso__symtab_origin(map
->dso
),
178 map
->start
, map
->end
, sym
->start
, sym
->end
,
179 sym
->binding
== STB_GLOBAL
? 'g' :
180 sym
->binding
== STB_LOCAL
? 'l' : 'w', sym
->name
,
181 err
? "[unknown]" : uts
.machine
,
182 err
? "[unknown]" : uts
.release
, perf_version_string
);
183 if (use_browser
<= 0)
186 map
->erange_warned
= true;
189 static void perf_top__record_precise_ip(struct perf_top
*top
,
190 struct hist_entry
*he
,
191 struct perf_sample
*sample
,
192 struct evsel
*evsel
, u64 ip
)
194 struct annotation
*notes
;
195 struct symbol
*sym
= he
->ms
.sym
;
198 if (sym
== NULL
|| (use_browser
== 0 &&
199 (top
->sym_filter_entry
== NULL
||
200 top
->sym_filter_entry
->ms
.sym
!= sym
)))
203 notes
= symbol__annotation(sym
);
205 if (pthread_mutex_trylock(¬es
->lock
))
208 err
= hist_entry__inc_addr_samples(he
, sample
, evsel
, ip
);
210 pthread_mutex_unlock(¬es
->lock
);
214 * This function is now called with he->hists->lock held.
215 * Release it before going to sleep.
217 pthread_mutex_unlock(&he
->hists
->lock
);
219 if (err
== -ERANGE
&& !he
->ms
.map
->erange_warned
)
220 ui__warn_map_erange(he
->ms
.map
, sym
, ip
);
221 else if (err
== -ENOMEM
) {
222 pr_err("Not enough memory for annotating '%s' symbol!\n",
227 pthread_mutex_lock(&he
->hists
->lock
);
231 static void perf_top__show_details(struct perf_top
*top
)
233 struct hist_entry
*he
= top
->sym_filter_entry
;
235 struct annotation
*notes
;
236 struct symbol
*symbol
;
242 evsel
= hists_to_evsel(he
->hists
);
245 notes
= symbol__annotation(symbol
);
247 pthread_mutex_lock(¬es
->lock
);
249 symbol__calc_percent(symbol
, evsel
);
251 if (notes
->src
== NULL
)
254 printf("Showing %s for %s\n", perf_evsel__name(top
->sym_evsel
), symbol
->name
);
255 printf(" Events Pcnt (>=%d%%)\n", top
->annotation_opts
.min_pcnt
);
257 more
= symbol__annotate_printf(symbol
, he
->ms
.map
, top
->sym_evsel
, &top
->annotation_opts
);
259 if (top
->evlist
->enabled
) {
261 symbol__annotate_zero_histogram(symbol
, top
->sym_evsel
->idx
);
263 symbol__annotate_decay_histogram(symbol
, top
->sym_evsel
->idx
);
266 printf("%d lines not displayed, maybe increase display entries [e]\n", more
);
268 pthread_mutex_unlock(¬es
->lock
);
271 static void perf_top__resort_hists(struct perf_top
*t
)
273 struct evlist
*evlist
= t
->evlist
;
276 evlist__for_each_entry(evlist
, pos
) {
277 struct hists
*hists
= evsel__hists(pos
);
280 * unlink existing entries so that they can be linked
281 * in a correct order in hists__match() below.
283 hists__unlink(hists
);
285 if (evlist
->enabled
) {
287 hists__delete_entries(hists
);
289 hists__decay_entries(hists
, t
->hide_user_symbols
,
290 t
->hide_kernel_symbols
);
294 hists__collapse_resort(hists
, NULL
);
296 /* Non-group events are considered as leader */
297 if (symbol_conf
.event_group
&&
298 !perf_evsel__is_group_leader(pos
)) {
299 struct hists
*leader_hists
= evsel__hists(pos
->leader
);
301 hists__match(leader_hists
, hists
);
302 hists__link(leader_hists
, hists
);
306 evlist__for_each_entry(evlist
, pos
) {
307 perf_evsel__output_resort(pos
, NULL
);
311 static void perf_top__print_sym_table(struct perf_top
*top
)
315 const int win_width
= top
->winsize
.ws_col
- 1;
316 struct evsel
*evsel
= top
->sym_evsel
;
317 struct hists
*hists
= evsel__hists(evsel
);
321 perf_top__header_snprintf(top
, bf
, sizeof(bf
));
324 printf("%-*.*s\n", win_width
, win_width
, graph_dotted_line
);
326 if (!top
->record_opts
.overwrite
&&
327 (hists
->stats
.nr_lost_warned
!=
328 hists
->stats
.nr_events
[PERF_RECORD_LOST
])) {
329 hists
->stats
.nr_lost_warned
=
330 hists
->stats
.nr_events
[PERF_RECORD_LOST
];
331 color_fprintf(stdout
, PERF_COLOR_RED
,
332 "WARNING: LOST %d chunks, Check IO/CPU overload",
333 hists
->stats
.nr_lost_warned
);
337 if (top
->sym_filter_entry
) {
338 perf_top__show_details(top
);
342 perf_top__resort_hists(top
);
344 hists__output_recalc_col_len(hists
, top
->print_entries
- printed
);
346 hists__fprintf(hists
, false, top
->print_entries
- printed
, win_width
,
347 top
->min_percent
, stdout
, !symbol_conf
.use_callchain
);
350 static void prompt_integer(int *target
, const char *msg
)
352 char *buf
= malloc(0), *p
;
356 fprintf(stdout
, "\n%s: ", msg
);
357 if (getline(&buf
, &dummy
, stdin
) < 0)
360 p
= strchr(buf
, '\n');
370 tmp
= strtoul(buf
, NULL
, 10);
376 static void prompt_percent(int *target
, const char *msg
)
380 prompt_integer(&tmp
, msg
);
381 if (tmp
>= 0 && tmp
<= 100)
385 static void perf_top__prompt_symbol(struct perf_top
*top
, const char *msg
)
387 char *buf
= malloc(0), *p
;
388 struct hist_entry
*syme
= top
->sym_filter_entry
, *n
, *found
= NULL
;
389 struct hists
*hists
= evsel__hists(top
->sym_evsel
);
390 struct rb_node
*next
;
393 /* zero counters of active symbol */
395 __zero_source_counters(syme
);
396 top
->sym_filter_entry
= NULL
;
399 fprintf(stdout
, "\n%s: ", msg
);
400 if (getline(&buf
, &dummy
, stdin
) < 0)
403 p
= strchr(buf
, '\n');
407 next
= rb_first_cached(&hists
->entries
);
409 n
= rb_entry(next
, struct hist_entry
, rb_node
);
410 if (n
->ms
.sym
&& !strcmp(buf
, n
->ms
.sym
->name
)) {
414 next
= rb_next(&n
->rb_node
);
418 fprintf(stderr
, "Sorry, %s is not active.\n", buf
);
421 perf_top__parse_source(top
, found
);
427 static void perf_top__print_mapped_keys(struct perf_top
*top
)
431 if (top
->sym_filter_entry
) {
432 struct symbol
*sym
= top
->sym_filter_entry
->ms
.sym
;
436 fprintf(stdout
, "\nMapped keys:\n");
437 fprintf(stdout
, "\t[d] display refresh delay. \t(%d)\n", top
->delay_secs
);
438 fprintf(stdout
, "\t[e] display entries (lines). \t(%d)\n", top
->print_entries
);
440 if (top
->evlist
->core
.nr_entries
> 1)
441 fprintf(stdout
, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top
->sym_evsel
));
443 fprintf(stdout
, "\t[f] profile display filter (count). \t(%d)\n", top
->count_filter
);
445 fprintf(stdout
, "\t[F] annotate display filter (percent). \t(%d%%)\n", top
->annotation_opts
.min_pcnt
);
446 fprintf(stdout
, "\t[s] annotate symbol. \t(%s)\n", name
?: "NULL");
447 fprintf(stdout
, "\t[S] stop annotation.\n");
450 "\t[K] hide kernel symbols. \t(%s)\n",
451 top
->hide_kernel_symbols
? "yes" : "no");
453 "\t[U] hide user symbols. \t(%s)\n",
454 top
->hide_user_symbols
? "yes" : "no");
455 fprintf(stdout
, "\t[z] toggle sample zeroing. \t(%d)\n", top
->zero
? 1 : 0);
456 fprintf(stdout
, "\t[qQ] quit.\n");
459 static int perf_top__key_mapped(struct perf_top
*top
, int c
)
475 return top
->evlist
->core
.nr_entries
> 1 ? 1 : 0;
483 static bool perf_top__handle_keypress(struct perf_top
*top
, int c
)
487 if (!perf_top__key_mapped(top
, c
)) {
488 struct pollfd stdin_poll
= { .fd
= 0, .events
= POLLIN
};
491 perf_top__print_mapped_keys(top
);
492 fprintf(stdout
, "\nEnter selection, or unmapped key to continue: ");
495 set_term_quiet_input(&save
);
497 poll(&stdin_poll
, 1, -1);
500 tcsetattr(0, TCSAFLUSH
, &save
);
501 if (!perf_top__key_mapped(top
, c
))
507 prompt_integer(&top
->delay_secs
, "Enter display delay");
508 if (top
->delay_secs
< 1)
512 prompt_integer(&top
->print_entries
, "Enter display entries (lines)");
513 if (top
->print_entries
== 0) {
514 perf_top__resize(top
);
515 signal(SIGWINCH
, winch_sig
);
517 signal(SIGWINCH
, SIG_DFL
);
521 if (top
->evlist
->core
.nr_entries
> 1) {
522 /* Select 0 as the default event: */
525 fprintf(stderr
, "\nAvailable events:");
527 evlist__for_each_entry(top
->evlist
, top
->sym_evsel
)
528 fprintf(stderr
, "\n\t%d %s", top
->sym_evsel
->idx
, perf_evsel__name(top
->sym_evsel
));
530 prompt_integer(&counter
, "Enter details event counter");
532 if (counter
>= top
->evlist
->core
.nr_entries
) {
533 top
->sym_evsel
= perf_evlist__first(top
->evlist
);
534 fprintf(stderr
, "Sorry, no such event, using %s.\n", perf_evsel__name(top
->sym_evsel
));
538 evlist__for_each_entry(top
->evlist
, top
->sym_evsel
)
539 if (top
->sym_evsel
->idx
== counter
)
542 top
->sym_evsel
= perf_evlist__first(top
->evlist
);
545 prompt_integer(&top
->count_filter
, "Enter display event count filter");
548 prompt_percent(&top
->annotation_opts
.min_pcnt
,
549 "Enter details display event filter (percent)");
552 top
->hide_kernel_symbols
= !top
->hide_kernel_symbols
;
556 printf("exiting.\n");
557 if (top
->dump_symtab
)
558 perf_session__fprintf_dsos(top
->session
, stderr
);
562 perf_top__prompt_symbol(top
, "Enter details symbol");
565 if (!top
->sym_filter_entry
)
568 struct hist_entry
*syme
= top
->sym_filter_entry
;
570 top
->sym_filter_entry
= NULL
;
571 __zero_source_counters(syme
);
575 top
->hide_user_symbols
= !top
->hide_user_symbols
;
578 top
->zero
= !top
->zero
;
587 static void perf_top__sort_new_samples(void *arg
)
589 struct perf_top
*t
= arg
;
591 if (t
->evlist
->selected
!= NULL
)
592 t
->sym_evsel
= t
->evlist
->selected
;
594 perf_top__resort_hists(t
);
596 if (t
->lost
|| t
->drop
)
597 pr_warning("Too slow to read ring buffer (change period (-c/-F) or limit CPUs (-C)\n");
600 static void stop_top(void)
606 static void *display_thread_tui(void *arg
)
609 struct perf_top
*top
= arg
;
610 const char *help
= "For a higher level overview, try: perf top --sort comm,dso";
611 struct hist_browser_timer hbt
= {
612 .timer
= perf_top__sort_new_samples
,
614 .refresh
= top
->delay_secs
,
617 /* In order to read symbols from other namespaces perf to needs to call
618 * setns(2). This isn't permitted if the struct_fs has multiple users.
619 * unshare(2) the fs so that we may continue to setns into namespaces
620 * that we're observing.
624 prctl(PR_SET_NAME
, "perf-top-UI", 0, 0, 0);
626 perf_top__sort_new_samples(top
);
629 * Initialize the uid_filter_str, in the future the TUI will allow
630 * Zooming in/out UIDs. For now just use whatever the user passed
633 evlist__for_each_entry(top
->evlist
, pos
) {
634 struct hists
*hists
= evsel__hists(pos
);
635 hists
->uid_filter_str
= top
->record_opts
.target
.uid_str
;
638 perf_evlist__tui_browse_hists(top
->evlist
, help
, &hbt
,
640 &top
->session
->header
.env
,
641 !top
->record_opts
.overwrite
,
642 &top
->annotation_opts
);
648 static void display_sig(int sig __maybe_unused
)
653 static void display_setup_sig(void)
655 signal(SIGSEGV
, sighandler_dump_stack
);
656 signal(SIGFPE
, sighandler_dump_stack
);
657 signal(SIGINT
, display_sig
);
658 signal(SIGQUIT
, display_sig
);
659 signal(SIGTERM
, display_sig
);
662 static void *display_thread(void *arg
)
664 struct pollfd stdin_poll
= { .fd
= 0, .events
= POLLIN
};
666 struct perf_top
*top
= arg
;
669 /* In order to read symbols from other namespaces perf to needs to call
670 * setns(2). This isn't permitted if the struct_fs has multiple users.
671 * unshare(2) the fs so that we may continue to setns into namespaces
672 * that we're observing.
676 prctl(PR_SET_NAME
, "perf-top-UI", 0, 0, 0);
679 pthread__unblock_sigwinch();
681 delay_msecs
= top
->delay_secs
* MSEC_PER_SEC
;
682 set_term_quiet_input(&save
);
687 perf_top__print_sym_table(top
);
689 * Either timeout expired or we got an EINTR due to SIGWINCH,
690 * refresh screen in both cases.
692 switch (poll(&stdin_poll
, 1, delay_msecs
)) {
701 tcsetattr(0, TCSAFLUSH
, &save
);
703 if (perf_top__handle_keypress(top
, c
))
709 tcsetattr(0, TCSAFLUSH
, &save
);
713 static int hist_iter__top_callback(struct hist_entry_iter
*iter
,
714 struct addr_location
*al
, bool single
,
717 struct perf_top
*top
= arg
;
718 struct hist_entry
*he
= iter
->he
;
719 struct evsel
*evsel
= iter
->evsel
;
721 if (perf_hpp_list
.sym
&& single
)
722 perf_top__record_precise_ip(top
, he
, iter
->sample
, evsel
, al
->addr
);
724 hist__account_cycles(iter
->sample
->branch_stack
, al
, iter
->sample
,
725 !(top
->record_opts
.branch_stack
& PERF_SAMPLE_BRANCH_ANY
));
729 static void perf_event__process_sample(struct perf_tool
*tool
,
730 const union perf_event
*event
,
732 struct perf_sample
*sample
,
733 struct machine
*machine
)
735 struct perf_top
*top
= container_of(tool
, struct perf_top
, tool
);
736 struct addr_location al
;
739 if (!machine
&& perf_guest
) {
740 static struct intlist
*seen
;
743 seen
= intlist__new(NULL
);
745 if (!intlist__has_entry(seen
, sample
->pid
)) {
746 pr_err("Can't find guest [%d]'s kernel information\n",
748 intlist__add(seen
, sample
->pid
);
754 pr_err("%u unprocessable samples recorded.\r",
755 top
->session
->evlist
->stats
.nr_unprocessable_samples
++);
759 if (event
->header
.misc
& PERF_RECORD_MISC_EXACT_IP
)
760 top
->exact_samples
++;
762 if (machine__resolve(machine
, &al
, sample
) < 0)
765 if (!machine
->kptr_restrict_warned
&&
766 symbol_conf
.kptr_restrict
&&
767 al
.cpumode
== PERF_RECORD_MISC_KERNEL
) {
768 if (!perf_evlist__exclude_kernel(top
->session
->evlist
)) {
770 "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
771 "Check /proc/sys/kernel/kptr_restrict and /proc/sys/kernel/perf_event_paranoid.\n\n"
772 "Kernel%s samples will not be resolved.\n",
773 al
.map
&& map__has_symbols(al
.map
) ?
775 if (use_browser
<= 0)
778 machine
->kptr_restrict_warned
= true;
781 if (al
.sym
== NULL
&& al
.map
!= NULL
) {
782 const char *msg
= "Kernel samples will not be resolved.\n";
784 * As we do lazy loading of symtabs we only will know if the
785 * specified vmlinux file is invalid when we actually have a
786 * hit in kernel space and then try to load it. So if we get
787 * here and there are _no_ symbols in the DSO backing the
788 * kernel map, bail out.
790 * We may never get here, for instance, if we use -K/
791 * --hide-kernel-symbols, even if the user specifies an
792 * invalid --vmlinux ;-)
794 if (!machine
->kptr_restrict_warned
&& !top
->vmlinux_warned
&&
795 __map__is_kernel(al
.map
) && map__has_symbols(al
.map
)) {
796 if (symbol_conf
.vmlinux_name
) {
798 dso__strerror_load(al
.map
->dso
, serr
, sizeof(serr
));
799 ui__warning("The %s file can't be used: %s\n%s",
800 symbol_conf
.vmlinux_name
, serr
, msg
);
802 ui__warning("A vmlinux file was not found.\n%s",
806 if (use_browser
<= 0)
808 top
->vmlinux_warned
= true;
812 if (al
.sym
== NULL
|| !al
.sym
->idle
) {
813 struct hists
*hists
= evsel__hists(evsel
);
814 struct hist_entry_iter iter
= {
817 .add_entry_cb
= hist_iter__top_callback
,
820 if (symbol_conf
.cumulate_callchain
)
821 iter
.ops
= &hist_iter_cumulative
;
823 iter
.ops
= &hist_iter_normal
;
825 pthread_mutex_lock(&hists
->lock
);
827 err
= hist_entry_iter__add(&iter
, &al
, top
->max_stack
, top
);
829 pr_err("Problem incrementing symbol period, skipping event\n");
831 pthread_mutex_unlock(&hists
->lock
);
834 addr_location__put(&al
);
838 perf_top__process_lost(struct perf_top
*top
, union perf_event
*event
,
841 struct hists
*hists
= evsel__hists(evsel
);
843 top
->lost
+= event
->lost
.lost
;
844 top
->lost_total
+= event
->lost
.lost
;
845 hists
->stats
.total_lost
+= event
->lost
.lost
;
849 perf_top__process_lost_samples(struct perf_top
*top
,
850 union perf_event
*event
,
853 struct hists
*hists
= evsel__hists(evsel
);
855 top
->lost
+= event
->lost_samples
.lost
;
856 top
->lost_total
+= event
->lost_samples
.lost
;
857 hists
->stats
.total_lost_samples
+= event
->lost_samples
.lost
;
860 static u64 last_timestamp
;
862 static void perf_top__mmap_read_idx(struct perf_top
*top
, int idx
)
864 struct record_opts
*opts
= &top
->record_opts
;
865 struct evlist
*evlist
= top
->evlist
;
867 union perf_event
*event
;
869 md
= opts
->overwrite
? &evlist
->overwrite_mmap
[idx
] : &evlist
->mmap
[idx
];
870 if (perf_mmap__read_init(md
) < 0)
873 while ((event
= perf_mmap__read_event(md
)) != NULL
) {
876 ret
= perf_evlist__parse_sample_timestamp(evlist
, event
, &last_timestamp
);
877 if (ret
&& ret
!= -1)
880 ret
= ordered_events__queue(top
->qe
.in
, event
, last_timestamp
, 0);
884 perf_mmap__consume(md
);
886 if (top
->qe
.rotate
) {
887 pthread_mutex_lock(&top
->qe
.mutex
);
888 top
->qe
.rotate
= false;
889 pthread_cond_signal(&top
->qe
.cond
);
890 pthread_mutex_unlock(&top
->qe
.mutex
);
894 perf_mmap__read_done(md
);
897 static void perf_top__mmap_read(struct perf_top
*top
)
899 bool overwrite
= top
->record_opts
.overwrite
;
900 struct evlist
*evlist
= top
->evlist
;
904 perf_evlist__toggle_bkw_mmap(evlist
, BKW_MMAP_DATA_PENDING
);
906 for (i
= 0; i
< top
->evlist
->nr_mmaps
; i
++)
907 perf_top__mmap_read_idx(top
, i
);
910 perf_evlist__toggle_bkw_mmap(evlist
, BKW_MMAP_EMPTY
);
911 perf_evlist__toggle_bkw_mmap(evlist
, BKW_MMAP_RUNNING
);
916 * Check per-event overwrite term.
917 * perf top should support consistent term for all events.
918 * - All events don't have per-event term
919 * E.g. "cpu/cpu-cycles/,cpu/instructions/"
920 * Nothing change, return 0.
921 * - All events have same per-event term
922 * E.g. "cpu/cpu-cycles,no-overwrite/,cpu/instructions,no-overwrite/
923 * Using the per-event setting to replace the opts->overwrite if
924 * they are different, then return 0.
925 * - Events have different per-event term
926 * E.g. "cpu/cpu-cycles,overwrite/,cpu/instructions,no-overwrite/"
928 * - Some of the event set per-event term, but some not.
929 * E.g. "cpu/cpu-cycles/,cpu/instructions,no-overwrite/"
932 static int perf_top__overwrite_check(struct perf_top
*top
)
934 struct record_opts
*opts
= &top
->record_opts
;
935 struct evlist
*evlist
= top
->evlist
;
936 struct perf_evsel_config_term
*term
;
937 struct list_head
*config_terms
;
939 int set
, overwrite
= -1;
941 evlist__for_each_entry(evlist
, evsel
) {
943 config_terms
= &evsel
->config_terms
;
944 list_for_each_entry(term
, config_terms
, list
) {
945 if (term
->type
== PERF_EVSEL__CONFIG_TERM_OVERWRITE
)
946 set
= term
->val
.overwrite
? 1 : 0;
949 /* no term for current and previous event (likely) */
950 if ((overwrite
< 0) && (set
< 0))
953 /* has term for both current and previous event, compare */
954 if ((overwrite
>= 0) && (set
>= 0) && (overwrite
!= set
))
957 /* no term for current event but has term for previous one */
958 if ((overwrite
>= 0) && (set
< 0))
961 /* has term for current event */
962 if ((overwrite
< 0) && (set
>= 0)) {
963 /* if it's first event, set overwrite */
964 if (evsel
== perf_evlist__first(evlist
))
971 if ((overwrite
>= 0) && (opts
->overwrite
!= overwrite
))
972 opts
->overwrite
= overwrite
;
977 static int perf_top_overwrite_fallback(struct perf_top
*top
,
980 struct record_opts
*opts
= &top
->record_opts
;
981 struct evlist
*evlist
= top
->evlist
;
982 struct evsel
*counter
;
984 if (!opts
->overwrite
)
987 /* only fall back when first event fails */
988 if (evsel
!= perf_evlist__first(evlist
))
991 evlist__for_each_entry(evlist
, counter
)
992 counter
->core
.attr
.write_backward
= false;
993 opts
->overwrite
= false;
994 pr_debug2("fall back to non-overwrite mode\n");
998 static int perf_top__start_counters(struct perf_top
*top
)
1001 struct evsel
*counter
;
1002 struct evlist
*evlist
= top
->evlist
;
1003 struct record_opts
*opts
= &top
->record_opts
;
1005 if (perf_top__overwrite_check(top
)) {
1006 ui__error("perf top only support consistent per-event "
1007 "overwrite setting for all events\n");
1011 perf_evlist__config(evlist
, opts
, &callchain_param
);
1013 evlist__for_each_entry(evlist
, counter
) {
1015 if (evsel__open(counter
, top
->evlist
->core
.cpus
,
1016 top
->evlist
->core
.threads
) < 0) {
1019 * Specially handle overwrite fall back.
1020 * Because perf top is the only tool which has
1021 * overwrite mode by default, support
1022 * both overwrite and non-overwrite mode, and
1023 * require consistent mode for all events.
1025 * May move it to generic code with more tools
1026 * have similar attribute.
1028 if (perf_missing_features
.write_backward
&&
1029 perf_top_overwrite_fallback(top
, counter
))
1032 if (perf_evsel__fallback(counter
, errno
, msg
, sizeof(msg
))) {
1034 ui__warning("%s\n", msg
);
1038 perf_evsel__open_strerror(counter
, &opts
->target
,
1039 errno
, msg
, sizeof(msg
));
1040 ui__error("%s\n", msg
);
1045 if (evlist__mmap(evlist
, opts
->mmap_pages
) < 0) {
1046 ui__error("Failed to mmap with %d (%s)\n",
1047 errno
, str_error_r(errno
, msg
, sizeof(msg
)));
1057 static int callchain_param__setup_sample_type(struct callchain_param
*callchain
)
1059 if (callchain
->mode
!= CHAIN_NONE
) {
1060 if (callchain_register_param(callchain
) < 0) {
1061 ui__error("Can't register callchain params.\n");
1069 static struct ordered_events
*rotate_queues(struct perf_top
*top
)
1071 struct ordered_events
*in
= top
->qe
.in
;
1073 if (top
->qe
.in
== &top
->qe
.data
[1])
1074 top
->qe
.in
= &top
->qe
.data
[0];
1076 top
->qe
.in
= &top
->qe
.data
[1];
1081 static void *process_thread(void *arg
)
1083 struct perf_top
*top
= arg
;
1086 struct ordered_events
*out
, *in
= top
->qe
.in
;
1088 if (!in
->nr_events
) {
1093 out
= rotate_queues(top
);
1095 pthread_mutex_lock(&top
->qe
.mutex
);
1096 top
->qe
.rotate
= true;
1097 pthread_cond_wait(&top
->qe
.cond
, &top
->qe
.mutex
);
1098 pthread_mutex_unlock(&top
->qe
.mutex
);
1100 if (ordered_events__flush(out
, OE_FLUSH__TOP
))
1101 pr_err("failed to process events\n");
1108 * Allow only 'top->delay_secs' seconds behind samples.
1110 static int should_drop(struct ordered_event
*qevent
, struct perf_top
*top
)
1112 union perf_event
*event
= qevent
->event
;
1113 u64 delay_timestamp
;
1115 if (event
->header
.type
!= PERF_RECORD_SAMPLE
)
1118 delay_timestamp
= qevent
->timestamp
+ top
->delay_secs
* NSEC_PER_SEC
;
1119 return delay_timestamp
< last_timestamp
;
1122 static int deliver_event(struct ordered_events
*qe
,
1123 struct ordered_event
*qevent
)
1125 struct perf_top
*top
= qe
->data
;
1126 struct evlist
*evlist
= top
->evlist
;
1127 struct perf_session
*session
= top
->session
;
1128 union perf_event
*event
= qevent
->event
;
1129 struct perf_sample sample
;
1130 struct evsel
*evsel
;
1131 struct machine
*machine
;
1134 if (should_drop(qevent
, top
)) {
1140 ret
= perf_evlist__parse_sample(evlist
, event
, &sample
);
1142 pr_err("Can't parse sample, err = %d\n", ret
);
1146 evsel
= perf_evlist__id2evsel(session
->evlist
, sample
.id
);
1147 assert(evsel
!= NULL
);
1149 if (event
->header
.type
== PERF_RECORD_SAMPLE
) {
1150 if (evswitch__discard(&top
->evswitch
, evsel
))
1155 switch (sample
.cpumode
) {
1156 case PERF_RECORD_MISC_USER
:
1158 if (top
->hide_user_symbols
)
1160 machine
= &session
->machines
.host
;
1162 case PERF_RECORD_MISC_KERNEL
:
1163 ++top
->kernel_samples
;
1164 if (top
->hide_kernel_symbols
)
1166 machine
= &session
->machines
.host
;
1168 case PERF_RECORD_MISC_GUEST_KERNEL
:
1169 ++top
->guest_kernel_samples
;
1170 machine
= perf_session__find_machine(session
,
1173 case PERF_RECORD_MISC_GUEST_USER
:
1174 ++top
->guest_us_samples
;
1176 * TODO: we don't process guest user from host side
1177 * except simple counting.
1181 if (event
->header
.type
== PERF_RECORD_SAMPLE
)
1183 machine
= &session
->machines
.host
;
1187 if (event
->header
.type
== PERF_RECORD_SAMPLE
) {
1188 perf_event__process_sample(&top
->tool
, event
, evsel
,
1190 } else if (event
->header
.type
== PERF_RECORD_LOST
) {
1191 perf_top__process_lost(top
, event
, evsel
);
1192 } else if (event
->header
.type
== PERF_RECORD_LOST_SAMPLES
) {
1193 perf_top__process_lost_samples(top
, event
, evsel
);
1194 } else if (event
->header
.type
< PERF_RECORD_MAX
) {
1195 hists__inc_nr_events(evsel__hists(evsel
), event
->header
.type
);
1196 machine__process_event(machine
, event
, &sample
);
1198 ++session
->evlist
->stats
.nr_unknown_events
;
1205 static void init_process_thread(struct perf_top
*top
)
1207 ordered_events__init(&top
->qe
.data
[0], deliver_event
, top
);
1208 ordered_events__init(&top
->qe
.data
[1], deliver_event
, top
);
1209 ordered_events__set_copy_on_queue(&top
->qe
.data
[0], true);
1210 ordered_events__set_copy_on_queue(&top
->qe
.data
[1], true);
1211 top
->qe
.in
= &top
->qe
.data
[0];
1212 pthread_mutex_init(&top
->qe
.mutex
, NULL
);
1213 pthread_cond_init(&top
->qe
.cond
, NULL
);
1216 static int __cmd_top(struct perf_top
*top
)
1218 struct record_opts
*opts
= &top
->record_opts
;
1219 pthread_t thread
, thread_process
;
1222 if (!top
->annotation_opts
.objdump_path
) {
1223 ret
= perf_env__lookup_objdump(&top
->session
->header
.env
,
1224 &top
->annotation_opts
.objdump_path
);
1229 ret
= callchain_param__setup_sample_type(&callchain_param
);
1233 if (perf_session__register_idle_thread(top
->session
) < 0)
1236 if (top
->nr_threads_synthesize
> 1)
1237 perf_set_multithreaded();
1239 init_process_thread(top
);
1241 if (opts
->record_namespaces
)
1242 top
->tool
.namespace_events
= true;
1244 ret
= perf_event__synthesize_bpf_events(top
->session
, perf_event__process
,
1245 &top
->session
->machines
.host
,
1248 pr_debug("Couldn't synthesize BPF events: Pre-existing BPF programs won't have symbols resolved.\n");
1250 machine__synthesize_threads(&top
->session
->machines
.host
, &opts
->target
,
1251 top
->evlist
->core
.threads
, false,
1252 top
->nr_threads_synthesize
);
1254 if (top
->nr_threads_synthesize
> 1)
1255 perf_set_singlethreaded();
1257 if (perf_hpp_list
.socket
) {
1258 ret
= perf_env__read_cpu_topology_map(&perf_env
);
1260 char errbuf
[BUFSIZ
];
1261 const char *err
= str_error_r(-ret
, errbuf
, sizeof(errbuf
));
1263 ui__error("Could not read the CPU topology map: %s\n", err
);
1268 ret
= perf_top__start_counters(top
);
1272 top
->session
->evlist
= top
->evlist
;
1273 perf_session__set_id_hdr_size(top
->session
);
1276 * When perf is starting the traced process, all the events (apart from
1277 * group members) have enable_on_exec=1 set, so don't spoil it by
1278 * prematurely enabling them.
1280 * XXX 'top' still doesn't start workloads like record, trace, but should,
1281 * so leave the check here.
1283 if (!target__none(&opts
->target
))
1284 evlist__enable(top
->evlist
);
1287 if (pthread_create(&thread_process
, NULL
, process_thread
, top
)) {
1288 ui__error("Could not create process thread.\n");
1292 if (pthread_create(&thread
, NULL
, (use_browser
> 0 ? display_thread_tui
:
1293 display_thread
), top
)) {
1294 ui__error("Could not create display thread.\n");
1295 goto out_join_thread
;
1298 if (top
->realtime_prio
) {
1299 struct sched_param param
;
1301 param
.sched_priority
= top
->realtime_prio
;
1302 if (sched_setscheduler(0, SCHED_FIFO
, ¶m
)) {
1303 ui__error("Could not set realtime priority.\n");
1308 /* Wait for a minimal set of events before starting the snapshot */
1309 perf_evlist__poll(top
->evlist
, 100);
1311 perf_top__mmap_read(top
);
1314 u64 hits
= top
->samples
;
1316 perf_top__mmap_read(top
);
1318 if (opts
->overwrite
|| (hits
== top
->samples
))
1319 ret
= perf_evlist__poll(top
->evlist
, 100);
1322 perf_top__resize(top
);
1329 pthread_join(thread
, NULL
);
1331 pthread_cond_signal(&top
->qe
.cond
);
1332 pthread_join(thread_process
, NULL
);
1337 callchain_opt(const struct option
*opt
, const char *arg
, int unset
)
1339 symbol_conf
.use_callchain
= true;
1340 return record_callchain_opt(opt
, arg
, unset
);
1344 parse_callchain_opt(const struct option
*opt
, const char *arg
, int unset
)
1346 struct callchain_param
*callchain
= opt
->value
;
1348 callchain
->enabled
= !unset
;
1349 callchain
->record_mode
= CALLCHAIN_FP
;
1355 symbol_conf
.use_callchain
= false;
1356 callchain
->record_mode
= CALLCHAIN_NONE
;
1360 return parse_callchain_top_opt(arg
);
1363 static int perf_top_config(const char *var
, const char *value
, void *cb __maybe_unused
)
1365 if (!strcmp(var
, "top.call-graph")) {
1366 var
= "call-graph.record-mode";
1367 return perf_default_config(var
, value
, cb
);
1369 if (!strcmp(var
, "top.children")) {
1370 symbol_conf
.cumulate_callchain
= perf_config_bool(var
, value
);
1378 parse_percent_limit(const struct option
*opt
, const char *arg
,
1379 int unset __maybe_unused
)
1381 struct perf_top
*top
= opt
->value
;
1383 top
->min_percent
= strtof(arg
, NULL
);
1387 const char top_callchain_help
[] = CALLCHAIN_RECORD_HELP CALLCHAIN_REPORT_HELP
1388 "\n\t\t\t\tDefault: fp,graph,0.5,caller,function";
1390 int cmd_top(int argc
, const char **argv
)
1392 char errbuf
[BUFSIZ
];
1393 struct perf_top top
= {
1397 .mmap_pages
= UINT_MAX
,
1398 .user_freq
= UINT_MAX
,
1399 .user_interval
= ULLONG_MAX
,
1400 .freq
= 4000, /* 4 KHz */
1405 * FIXME: This will lose PERF_RECORD_MMAP and other metadata
1406 * when we pause, fix that and reenable. Probably using a
1407 * separate evlist with a dummy event, i.e. a non-overwrite
1408 * ring buffer just for metadata events, while PERF_RECORD_SAMPLE
1409 * stays in overwrite mode. -acme
1412 .sample_time
= true,
1413 .sample_time_set
= true,
1415 .max_stack
= sysctl__max_stack(),
1416 .annotation_opts
= annotation__default_options
,
1417 .nr_threads_synthesize
= UINT_MAX
,
1419 struct record_opts
*opts
= &top
.record_opts
;
1420 struct target
*target
= &opts
->target
;
1421 const struct option options
[] = {
1422 OPT_CALLBACK('e', "event", &top
.evlist
, "event",
1423 "event selector. use 'perf list' to list available events",
1424 parse_events_option
),
1425 OPT_U64('c', "count", &opts
->user_interval
, "event period to sample"),
1426 OPT_STRING('p', "pid", &target
->pid
, "pid",
1427 "profile events on existing process id"),
1428 OPT_STRING('t', "tid", &target
->tid
, "tid",
1429 "profile events on existing thread id"),
1430 OPT_BOOLEAN('a', "all-cpus", &target
->system_wide
,
1431 "system-wide collection from all CPUs"),
1432 OPT_STRING('C', "cpu", &target
->cpu_list
, "cpu",
1433 "list of cpus to monitor"),
1434 OPT_STRING('k', "vmlinux", &symbol_conf
.vmlinux_name
,
1435 "file", "vmlinux pathname"),
1436 OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf
.ignore_vmlinux
,
1437 "don't load vmlinux even if found"),
1438 OPT_STRING(0, "kallsyms", &symbol_conf
.kallsyms_name
,
1439 "file", "kallsyms pathname"),
1440 OPT_BOOLEAN('K', "hide_kernel_symbols", &top
.hide_kernel_symbols
,
1441 "hide kernel symbols"),
1442 OPT_CALLBACK('m', "mmap-pages", &opts
->mmap_pages
, "pages",
1443 "number of mmap data pages",
1444 perf_evlist__parse_mmap_pages
),
1445 OPT_INTEGER('r', "realtime", &top
.realtime_prio
,
1446 "collect data with this RT SCHED_FIFO priority"),
1447 OPT_INTEGER('d', "delay", &top
.delay_secs
,
1448 "number of seconds to delay between refreshes"),
1449 OPT_BOOLEAN('D', "dump-symtab", &top
.dump_symtab
,
1450 "dump the symbol table used for profiling"),
1451 OPT_INTEGER('f', "count-filter", &top
.count_filter
,
1452 "only display functions with more events than this"),
1453 OPT_BOOLEAN(0, "group", &opts
->group
,
1454 "put the counters into a counter group"),
1455 OPT_BOOLEAN('i', "no-inherit", &opts
->no_inherit
,
1456 "child tasks do not inherit counters"),
1457 OPT_STRING(0, "sym-annotate", &top
.sym_filter
, "symbol name",
1458 "symbol to annotate"),
1459 OPT_BOOLEAN('z', "zero", &top
.zero
, "zero history across updates"),
1460 OPT_CALLBACK('F', "freq", &top
.record_opts
, "freq or 'max'",
1461 "profile at this frequency",
1462 record__parse_freq
),
1463 OPT_INTEGER('E', "entries", &top
.print_entries
,
1464 "display this many functions"),
1465 OPT_BOOLEAN('U', "hide_user_symbols", &top
.hide_user_symbols
,
1466 "hide user symbols"),
1467 OPT_BOOLEAN(0, "tui", &top
.use_tui
, "Use the TUI interface"),
1468 OPT_BOOLEAN(0, "stdio", &top
.use_stdio
, "Use the stdio interface"),
1469 OPT_INCR('v', "verbose", &verbose
,
1470 "be more verbose (show counter open errors, etc)"),
1471 OPT_STRING('s', "sort", &sort_order
, "key[,key2...]",
1472 "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
1473 " Please refer the man page for the complete list."),
1474 OPT_STRING(0, "fields", &field_order
, "key[,keys...]",
1475 "output field(s): overhead, period, sample plus all of sort keys"),
1476 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf
.show_nr_samples
,
1477 "Show a column with the number of samples"),
1478 OPT_CALLBACK_NOOPT('g', NULL
, &callchain_param
,
1479 NULL
, "enables call-graph recording and display",
1481 OPT_CALLBACK(0, "call-graph", &callchain_param
,
1482 "record_mode[,record_size],print_type,threshold[,print_limit],order,sort_key[,branch]",
1483 top_callchain_help
, &parse_callchain_opt
),
1484 OPT_BOOLEAN(0, "children", &symbol_conf
.cumulate_callchain
,
1485 "Accumulate callchains of children and show total overhead as well"),
1486 OPT_INTEGER(0, "max-stack", &top
.max_stack
,
1487 "Set the maximum stack depth when parsing the callchain. "
1488 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH
)),
1489 OPT_CALLBACK(0, "ignore-callees", NULL
, "regex",
1490 "ignore callees of these functions in call graphs",
1491 report_parse_ignore_callees_opt
),
1492 OPT_BOOLEAN(0, "show-total-period", &symbol_conf
.show_total_period
,
1493 "Show a column with the sum of periods"),
1494 OPT_STRING(0, "dsos", &symbol_conf
.dso_list_str
, "dso[,dso...]",
1495 "only consider symbols in these dsos"),
1496 OPT_STRING(0, "comms", &symbol_conf
.comm_list_str
, "comm[,comm...]",
1497 "only consider symbols in these comms"),
1498 OPT_STRING(0, "symbols", &symbol_conf
.sym_list_str
, "symbol[,symbol...]",
1499 "only consider these symbols"),
1500 OPT_BOOLEAN(0, "source", &top
.annotation_opts
.annotate_src
,
1501 "Interleave source code with assembly code (default)"),
1502 OPT_BOOLEAN(0, "asm-raw", &top
.annotation_opts
.show_asm_raw
,
1503 "Display raw encoding of assembly instructions (default)"),
1504 OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf
.demangle_kernel
,
1505 "Enable kernel symbol demangling"),
1506 OPT_BOOLEAN(0, "no-bpf-event", &top
.record_opts
.no_bpf_event
, "do not record bpf events"),
1507 OPT_STRING(0, "objdump", &top
.annotation_opts
.objdump_path
, "path",
1508 "objdump binary to use for disassembly and annotations"),
1509 OPT_STRING('M', "disassembler-style", &top
.annotation_opts
.disassembler_style
, "disassembler style",
1510 "Specify disassembler style (e.g. -M intel for intel syntax)"),
1511 OPT_STRING('u', "uid", &target
->uid_str
, "user", "user to profile"),
1512 OPT_CALLBACK(0, "percent-limit", &top
, "percent",
1513 "Don't show entries under that percent", parse_percent_limit
),
1514 OPT_CALLBACK(0, "percentage", NULL
, "relative|absolute",
1515 "How to display percentage of filtered entries", parse_filter_percentage
),
1516 OPT_STRING('w', "column-widths", &symbol_conf
.col_width_list_str
,
1518 "don't try to adjust column width, use these fixed values"),
1519 OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout
,
1520 "per thread proc mmap processing timeout in ms"),
1521 OPT_CALLBACK_NOOPT('b', "branch-any", &opts
->branch_stack
,
1522 "branch any", "sample any taken branches",
1523 parse_branch_stack
),
1524 OPT_CALLBACK('j', "branch-filter", &opts
->branch_stack
,
1525 "branch filter mask", "branch stack filter modes",
1526 parse_branch_stack
),
1527 OPT_BOOLEAN(0, "raw-trace", &symbol_conf
.raw_trace
,
1528 "Show raw trace event output (do not use print fmt or plugins)"),
1529 OPT_BOOLEAN(0, "hierarchy", &symbol_conf
.report_hierarchy
,
1530 "Show entries in a hierarchy"),
1531 OPT_BOOLEAN(0, "overwrite", &top
.record_opts
.overwrite
,
1532 "Use a backward ring buffer, default: no"),
1533 OPT_BOOLEAN(0, "force", &symbol_conf
.force
, "don't complain, do it"),
1534 OPT_UINTEGER(0, "num-thread-synthesize", &top
.nr_threads_synthesize
,
1535 "number of thread to run event synthesize"),
1536 OPT_BOOLEAN(0, "namespaces", &opts
->record_namespaces
,
1537 "Record namespaces events"),
1538 OPTS_EVSWITCH(&top
.evswitch
),
1541 struct evlist
*sb_evlist
= NULL
;
1542 const char * const top_usage
[] = {
1543 "perf top [<options>]",
1546 int status
= hists__init();
1551 top
.annotation_opts
.min_pcnt
= 5;
1552 top
.annotation_opts
.context
= 4;
1554 top
.evlist
= evlist__new();
1555 if (top
.evlist
== NULL
)
1558 status
= perf_config(perf_top_config
, &top
);
1562 argc
= parse_options(argc
, argv
, options
, top_usage
, 0);
1564 usage_with_options(top_usage
, options
);
1566 if (!top
.evlist
->core
.nr_entries
&&
1567 perf_evlist__add_default(top
.evlist
) < 0) {
1568 pr_err("Not enough memory for event selector list\n");
1569 goto out_delete_evlist
;
1572 status
= evswitch__init(&top
.evswitch
, top
.evlist
, stderr
);
1574 goto out_delete_evlist
;
1576 if (symbol_conf
.report_hierarchy
) {
1577 /* disable incompatible options */
1578 symbol_conf
.event_group
= false;
1579 symbol_conf
.cumulate_callchain
= false;
1582 pr_err("Error: --hierarchy and --fields options cannot be used together\n");
1583 parse_options_usage(top_usage
, options
, "fields", 0);
1584 parse_options_usage(NULL
, options
, "hierarchy", 0);
1585 goto out_delete_evlist
;
1589 if (opts
->branch_stack
&& callchain_param
.enabled
)
1590 symbol_conf
.show_branchflag_count
= true;
1592 sort__mode
= SORT_MODE__TOP
;
1593 /* display thread wants entries to be collapsed in a different tree */
1594 perf_hpp_list
.need_collapse
= 1;
1598 else if (top
.use_tui
)
1601 setup_browser(false);
1603 if (setup_sorting(top
.evlist
) < 0) {
1605 parse_options_usage(top_usage
, options
, "s", 1);
1607 parse_options_usage(sort_order
? NULL
: top_usage
,
1608 options
, "fields", 0);
1609 goto out_delete_evlist
;
1612 status
= target__validate(target
);
1614 target__strerror(target
, status
, errbuf
, BUFSIZ
);
1615 ui__warning("%s\n", errbuf
);
1618 status
= target__parse_uid(target
);
1620 int saved_errno
= errno
;
1622 target__strerror(target
, status
, errbuf
, BUFSIZ
);
1623 ui__error("%s\n", errbuf
);
1625 status
= -saved_errno
;
1626 goto out_delete_evlist
;
1629 if (target__none(target
))
1630 target
->system_wide
= true;
1632 if (perf_evlist__create_maps(top
.evlist
, target
) < 0) {
1633 ui__error("Couldn't create thread/CPU maps: %s\n",
1634 errno
== ENOENT
? "No such process" : str_error_r(errno
, errbuf
, sizeof(errbuf
)));
1635 goto out_delete_evlist
;
1638 if (top
.delay_secs
< 1)
1641 if (record_opts__config(opts
)) {
1643 goto out_delete_evlist
;
1646 top
.sym_evsel
= perf_evlist__first(top
.evlist
);
1648 if (!callchain_param
.enabled
) {
1649 symbol_conf
.cumulate_callchain
= false;
1650 perf_hpp__cancel_cumulate();
1653 if (symbol_conf
.cumulate_callchain
&& !callchain_param
.order_set
)
1654 callchain_param
.order
= ORDER_CALLER
;
1656 status
= symbol__annotation_init();
1658 goto out_delete_evlist
;
1660 annotation_config__init();
1662 symbol_conf
.try_vmlinux_path
= (symbol_conf
.vmlinux_name
== NULL
);
1663 status
= symbol__init(NULL
);
1665 goto out_delete_evlist
;
1667 sort__setup_elide(stdout
);
1669 get_term_dimensions(&top
.winsize
);
1670 if (top
.print_entries
== 0) {
1671 perf_top__update_print_entries(&top
);
1672 signal(SIGWINCH
, winch_sig
);
1675 top
.session
= perf_session__new(NULL
, false, NULL
);
1676 if (IS_ERR(top
.session
)) {
1677 status
= PTR_ERR(top
.session
);
1678 goto out_delete_evlist
;
1681 if (!top
.record_opts
.no_bpf_event
)
1682 bpf_event__add_sb_event(&sb_evlist
, &perf_env
);
1684 if (perf_evlist__start_sb_thread(sb_evlist
, target
)) {
1685 pr_debug("Couldn't start the BPF side band thread:\nBPF programs starting from now on won't be annotatable\n");
1686 opts
->no_bpf_event
= true;
1689 status
= __cmd_top(&top
);
1691 if (!opts
->no_bpf_event
)
1692 perf_evlist__stop_sb_thread(sb_evlist
);
1695 evlist__delete(top
.evlist
);
1696 perf_session__delete(top
.session
);