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Ingo Molnar07800602009-04-20 15:00:56 +02001/*
Ingo Molnarbf9e1872009-06-02 23:37:05 +02002 * builtin-top.c
3 *
4 * Builtin top command: Display a continuously updated profile of
5 * any workload, CPU or specific PID.
6 *
7 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03008 * 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
Ingo Molnarbf9e1872009-06-02 23:37:05 +02009 *
10 * Improvements and fixes by:
11 *
12 * Arjan van de Ven <arjan@linux.intel.com>
13 * Yanmin Zhang <yanmin.zhang@intel.com>
14 * Wu Fengguang <fengguang.wu@intel.com>
15 * Mike Galbraith <efault@gmx.de>
16 * Paul Mackerras <paulus@samba.org>
17 *
18 * Released under the GPL v2. (and only v2, not any later version)
Ingo Molnar07800602009-04-20 15:00:56 +020019 */
Ingo Molnarbf9e1872009-06-02 23:37:05 +020020#include "builtin.h"
Ingo Molnar07800602009-04-20 15:00:56 +020021
Peter Zijlstra1a482f32009-05-23 18:28:58 +020022#include "perf.h"
Ingo Molnarbf9e1872009-06-02 23:37:05 +020023
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -020024#include "util/annotate.h"
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -020025#include "util/cache.h"
Ingo Molnar8fc03212009-06-04 15:19:47 +020026#include "util/color.h"
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020027#include "util/evlist.h"
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -020028#include "util/evsel.h"
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -030029#include "util/machine.h"
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -020030#include "util/session.h"
31#include "util/symbol.h"
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -030032#include "util/thread.h"
Arnaldo Carvalho de Melofd782602011-01-18 15:15:24 -020033#include "util/thread_map.h"
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -020034#include "util/top.h"
Ingo Molnar148be2c2009-04-27 08:02:14 +020035#include "util/util.h"
Arnaldo Carvalho de Melo43cbcd82009-07-01 12:28:37 -030036#include <linux/rbtree.h>
Ingo Molnarb456bae2009-05-26 09:17:18 +020037#include "util/parse-options.h"
38#include "util/parse-events.h"
Paul Mackerrasa12b51c2010-03-10 20:36:09 +110039#include "util/cpumap.h"
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -020040#include "util/xyarray.h"
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -030041#include "util/sort.h"
David Ahern6b118e92012-07-30 22:31:35 -060042#include "util/intlist.h"
Sukadev Bhattiprolu0d3942d2013-05-14 22:56:51 -070043#include "arch/common.h"
Ingo Molnar07800602009-04-20 15:00:56 +020044
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020045#include "util/debug.h"
46
Ingo Molnar07800602009-04-20 15:00:56 +020047#include <assert.h>
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -030048#include <elf.h>
Ingo Molnar07800602009-04-20 15:00:56 +020049#include <fcntl.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020050
Ingo Molnar07800602009-04-20 15:00:56 +020051#include <stdio.h>
Mike Galbraith923c42c2009-07-22 20:36:03 +020052#include <termios.h>
53#include <unistd.h>
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -020054#include <inttypes.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020055
Ingo Molnar07800602009-04-20 15:00:56 +020056#include <errno.h>
Ingo Molnar07800602009-04-20 15:00:56 +020057#include <time.h>
58#include <sched.h>
Ingo Molnar07800602009-04-20 15:00:56 +020059
60#include <sys/syscall.h>
61#include <sys/ioctl.h>
62#include <sys/poll.h>
63#include <sys/prctl.h>
64#include <sys/wait.h>
65#include <sys/uio.h>
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -030066#include <sys/utsname.h>
Ingo Molnar07800602009-04-20 15:00:56 +020067#include <sys/mman.h>
68
69#include <linux/unistd.h>
70#include <linux/types.h>
71
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -030072static volatile int done;
73
Namhyung Kim933cbb12013-05-14 11:08:59 +090074#define HEADER_LINE_NR 5
75
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020076static void perf_top__update_print_entries(struct perf_top *top)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020077{
Namhyung Kim933cbb12013-05-14 11:08:59 +090078 top->print_entries = top->winsize.ws_row - HEADER_LINE_NR;
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020079}
80
Irina Tirdea1d037ca2012-09-11 01:15:03 +030081static void perf_top__sig_winch(int sig __maybe_unused,
82 siginfo_t *info __maybe_unused, void *arg)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020083{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020084 struct perf_top *top = arg;
85
86 get_term_dimensions(&top->winsize);
87 perf_top__update_print_entries(top);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020088}
89
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020090static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he)
Mike Galbraith923c42c2009-07-22 20:36:03 +020091{
92 struct symbol *sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -020093 struct annotation *notes;
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -030094 struct map *map;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -020095 int err = -1;
Mike Galbraith923c42c2009-07-22 20:36:03 +020096
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -030097 if (!he || !he->ms.sym)
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -030098 return -1;
99
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300100 sym = he->ms.sym;
101 map = he->ms.map;
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300102
103 /*
104 * We can't annotate with just /proc/kallsyms
105 */
Adrian Hunterbbb7f842013-08-07 14:38:54 +0300106 if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
107 !dso__is_kcore(map->dso)) {
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200108 pr_err("Can't annotate %s: No vmlinux file was found in the "
109 "path\n", sym->name);
110 sleep(1);
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300111 return -1;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200112 }
113
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200114 notes = symbol__annotation(sym);
115 if (notes->src != NULL) {
116 pthread_mutex_lock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200117 goto out_assign;
118 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200119
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200120 pthread_mutex_lock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200121
Arnaldo Carvalho de Melod04b35f2011-11-11 22:17:32 -0200122 if (symbol__alloc_hist(sym) < 0) {
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300123 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200124 pr_err("Not enough memory for annotating '%s' symbol!\n",
125 sym->name);
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200126 sleep(1);
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300127 return err;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200128 }
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200129
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300130 err = symbol__annotate(sym, map, 0);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200131 if (err == 0) {
Mike Galbraith923c42c2009-07-22 20:36:03 +0200132out_assign:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200133 top->sym_filter_entry = he;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200134 }
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300135
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200136 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200137 return err;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200138}
139
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300140static void __zero_source_counters(struct hist_entry *he)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200141{
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300142 struct symbol *sym = he->ms.sym;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200143 symbol__annotate_zero_histograms(sym);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200144}
145
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300146static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
147{
148 struct utsname uts;
149 int err = uname(&uts);
150
151 ui__warning("Out of bounds address found:\n\n"
152 "Addr: %" PRIx64 "\n"
153 "DSO: %s %c\n"
154 "Map: %" PRIx64 "-%" PRIx64 "\n"
155 "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n"
156 "Arch: %s\n"
157 "Kernel: %s\n"
158 "Tools: %s\n\n"
159 "Not all samples will be on the annotation output.\n\n"
160 "Please report to linux-kernel@vger.kernel.org\n",
161 ip, map->dso->long_name, dso__symtab_origin(map->dso),
162 map->start, map->end, sym->start, sym->end,
163 sym->binding == STB_GLOBAL ? 'g' :
164 sym->binding == STB_LOCAL ? 'l' : 'w', sym->name,
165 err ? "[unknown]" : uts.machine,
166 err ? "[unknown]" : uts.release, perf_version_string);
167 if (use_browser <= 0)
168 sleep(5);
169
170 map->erange_warned = true;
171}
172
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200173static void perf_top__record_precise_ip(struct perf_top *top,
174 struct hist_entry *he,
175 int counter, u64 ip)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200176{
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200177 struct annotation *notes;
178 struct symbol *sym;
Namhyung Kim48c65bd2014-02-20 10:32:53 +0900179 int err = 0;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200180
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300181 if (he == NULL || he->ms.sym == NULL ||
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200182 ((top->sym_filter_entry == NULL ||
183 top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1))
Mike Galbraith923c42c2009-07-22 20:36:03 +0200184 return;
185
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300186 sym = he->ms.sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200187 notes = symbol__annotation(sym);
188
189 if (pthread_mutex_trylock(&notes->lock))
Mike Galbraith923c42c2009-07-22 20:36:03 +0200190 return;
191
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300192 ip = he->ms.map->map_ip(he->ms.map, ip);
Namhyung Kim48c65bd2014-02-20 10:32:53 +0900193
194 if (ui__has_annotation())
195 err = hist_entry__inc_addr_samples(he, counter, ip);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200196
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200197 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300198
199 if (err == -ERANGE && !he->ms.map->erange_warned)
200 ui__warn_map_erange(he->ms.map, sym, ip);
Arnaldo Carvalho de Melob66d8c02013-12-18 15:37:41 -0300201 else if (err == -ENOMEM) {
202 pr_err("Not enough memory for annotating '%s' symbol!\n",
203 sym->name);
204 sleep(1);
205 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200206}
207
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200208static void perf_top__show_details(struct perf_top *top)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200209{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200210 struct hist_entry *he = top->sym_filter_entry;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200211 struct annotation *notes;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200212 struct symbol *symbol;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200213 int more;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200214
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300215 if (!he)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200216 return;
217
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300218 symbol = he->ms.sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200219 notes = symbol__annotation(symbol);
220
221 pthread_mutex_lock(&notes->lock);
222
223 if (notes->src == NULL)
224 goto out_unlock;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200225
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300226 printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200227 printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200228
Namhyung Kimdb8fd072013-03-05 14:53:21 +0900229 more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel,
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200230 0, top->sym_pcnt_filter, top->print_entries, 4);
231 if (top->zero)
232 symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200233 else
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200234 symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200235 if (more != 0)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200236 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200237out_unlock:
238 pthread_mutex_unlock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200239}
Ingo Molnar07800602009-04-20 15:00:56 +0200240
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200241static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel,
242 struct addr_location *al,
243 struct perf_sample *sample)
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300244{
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300245 struct hist_entry *he;
246
Namhyung Kim27a0dcb2013-05-14 11:09:02 +0900247 pthread_mutex_lock(&evsel->hists.lock);
Namhyung Kim41a4e6e2013-10-31 15:56:03 +0900248 he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL,
249 sample->period, sample->weight,
250 sample->transaction);
Namhyung Kim27a0dcb2013-05-14 11:09:02 +0900251 pthread_mutex_unlock(&evsel->hists.lock);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300252 if (he == NULL)
253 return NULL;
254
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300255 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
256 return he;
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300257}
Ingo Molnar07800602009-04-20 15:00:56 +0200258
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200259static void perf_top__print_sym_table(struct perf_top *top)
Ingo Molnar07800602009-04-20 15:00:56 +0200260{
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -0200261 char bf[160];
262 int printed = 0;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200263 const int win_width = top->winsize.ws_col - 1;
Mike Galbraithd94b9432009-05-25 09:57:56 +0200264
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200265 puts(CONSOLE_CLEAR);
Ingo Molnar07800602009-04-20 15:00:56 +0200266
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200267 perf_top__header_snprintf(top, bf, sizeof(bf));
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -0200268 printf("%s\n", bf);
Ingo Molnar07800602009-04-20 15:00:56 +0200269
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200270 perf_top__reset_sample_counters(top);
Ingo Molnar07800602009-04-20 15:00:56 +0200271
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200272 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
Ingo Molnar07800602009-04-20 15:00:56 +0200273
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200274 if (top->sym_evsel->hists.stats.nr_lost_warned !=
275 top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) {
276 top->sym_evsel->hists.stats.nr_lost_warned =
277 top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST];
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200278 color_fprintf(stdout, PERF_COLOR_RED,
279 "WARNING: LOST %d chunks, Check IO/CPU overload",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200280 top->sym_evsel->hists.stats.nr_lost_warned);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300281 ++printed;
Arnaldo Carvalho de Melo93fc64f2011-01-29 12:08:00 -0200282 }
283
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200284 if (top->sym_filter_entry) {
285 perf_top__show_details(top);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200286 return;
287 }
288
Namhyung Kimc1fb5652013-10-11 14:15:38 +0900289 hists__collapse_resort(&top->sym_evsel->hists, NULL);
Namhyung Kim3a5714f2013-05-14 11:09:01 +0900290 hists__output_resort(&top->sym_evsel->hists);
291 hists__decay_entries(&top->sym_evsel->hists,
292 top->hide_user_symbols,
293 top->hide_kernel_symbols);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200294 hists__output_recalc_col_len(&top->sym_evsel->hists,
Namhyung Kim933cbb12013-05-14 11:08:59 +0900295 top->print_entries - printed);
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200296 putchar('\n');
Jiri Olsa41724e42012-10-04 21:49:38 +0900297 hists__fprintf(&top->sym_evsel->hists, false,
Namhyung Kimfa5df942013-05-14 11:09:05 +0900298 top->print_entries - printed, win_width,
299 top->min_percent, stdout);
Ingo Molnar07800602009-04-20 15:00:56 +0200300}
301
Mike Galbraith923c42c2009-07-22 20:36:03 +0200302static void prompt_integer(int *target, const char *msg)
303{
304 char *buf = malloc(0), *p;
305 size_t dummy = 0;
306 int tmp;
307
308 fprintf(stdout, "\n%s: ", msg);
309 if (getline(&buf, &dummy, stdin) < 0)
310 return;
311
312 p = strchr(buf, '\n');
313 if (p)
314 *p = 0;
315
316 p = buf;
317 while(*p) {
318 if (!isdigit(*p))
319 goto out_free;
320 p++;
321 }
322 tmp = strtoul(buf, NULL, 10);
323 *target = tmp;
324out_free:
325 free(buf);
326}
327
328static void prompt_percent(int *target, const char *msg)
329{
330 int tmp = 0;
331
332 prompt_integer(&tmp, msg);
333 if (tmp >= 0 && tmp <= 100)
334 *target = tmp;
335}
336
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200337static void perf_top__prompt_symbol(struct perf_top *top, const char *msg)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200338{
339 char *buf = malloc(0), *p;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200340 struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL;
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300341 struct rb_node *next;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200342 size_t dummy = 0;
343
344 /* zero counters of active symbol */
345 if (syme) {
Mike Galbraith923c42c2009-07-22 20:36:03 +0200346 __zero_source_counters(syme);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200347 top->sym_filter_entry = NULL;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200348 }
349
350 fprintf(stdout, "\n%s: ", msg);
351 if (getline(&buf, &dummy, stdin) < 0)
352 goto out_free;
353
354 p = strchr(buf, '\n');
355 if (p)
356 *p = 0;
357
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200358 next = rb_first(&top->sym_evsel->hists.entries);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300359 while (next) {
360 n = rb_entry(next, struct hist_entry, rb_node);
361 if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) {
362 found = n;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200363 break;
364 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300365 next = rb_next(&n->rb_node);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200366 }
367
368 if (!found) {
Kirill Smelkov66aeb6d2010-01-13 13:22:19 -0200369 fprintf(stderr, "Sorry, %s is not active.\n", buf);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200370 sleep(1);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200371 } else
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200372 perf_top__parse_source(top, found);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200373
374out_free:
375 free(buf);
376}
377
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200378static void perf_top__print_mapped_keys(struct perf_top *top)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200379{
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200380 char *name = NULL;
381
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200382 if (top->sym_filter_entry) {
383 struct symbol *sym = top->sym_filter_entry->ms.sym;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200384 name = sym->name;
385 }
386
387 fprintf(stdout, "\nMapped keys:\n");
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200388 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs);
389 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200390
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200391 if (top->evlist->nr_entries > 1)
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300392 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel));
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200393
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200394 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200395
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200396 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter);
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200397 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
398 fprintf(stdout, "\t[S] stop annotation.\n");
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200399
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200400 fprintf(stdout,
Kirill Smelkov1a72cfa2010-02-12 19:20:59 +0300401 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200402 top->hide_kernel_symbols ? "yes" : "no");
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200403 fprintf(stdout,
404 "\t[U] hide user symbols. \t(%s)\n",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200405 top->hide_user_symbols ? "yes" : "no");
406 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200407 fprintf(stdout, "\t[qQ] quit.\n");
408}
409
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200410static int perf_top__key_mapped(struct perf_top *top, int c)
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200411{
412 switch (c) {
413 case 'd':
414 case 'e':
415 case 'f':
416 case 'z':
417 case 'q':
418 case 'Q':
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200419 case 'K':
420 case 'U':
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200421 case 'F':
422 case 's':
423 case 'S':
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200424 return 1;
425 case 'E':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200426 return top->evlist->nr_entries > 1 ? 1 : 0;
Ingo Molnar83a09442009-08-15 12:26:57 +0200427 default:
428 break;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200429 }
430
431 return 0;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200432}
433
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300434static bool perf_top__handle_keypress(struct perf_top *top, int c)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200435{
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300436 bool ret = true;
437
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200438 if (!perf_top__key_mapped(top, c)) {
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200439 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
440 struct termios tc, save;
441
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200442 perf_top__print_mapped_keys(top);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200443 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
444 fflush(stdout);
445
446 tcgetattr(0, &save);
447 tc = save;
448 tc.c_lflag &= ~(ICANON | ECHO);
449 tc.c_cc[VMIN] = 0;
450 tc.c_cc[VTIME] = 0;
451 tcsetattr(0, TCSANOW, &tc);
452
453 poll(&stdin_poll, 1, -1);
454 c = getc(stdin);
455
456 tcsetattr(0, TCSAFLUSH, &save);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200457 if (!perf_top__key_mapped(top, c))
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300458 return ret;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200459 }
460
Mike Galbraith923c42c2009-07-22 20:36:03 +0200461 switch (c) {
462 case 'd':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200463 prompt_integer(&top->delay_secs, "Enter display delay");
464 if (top->delay_secs < 1)
465 top->delay_secs = 1;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200466 break;
467 case 'e':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200468 prompt_integer(&top->print_entries, "Enter display entries (lines)");
469 if (top->print_entries == 0) {
470 struct sigaction act = {
471 .sa_sigaction = perf_top__sig_winch,
472 .sa_flags = SA_SIGINFO,
473 };
474 perf_top__sig_winch(SIGWINCH, NULL, top);
475 sigaction(SIGWINCH, &act, NULL);
Stephane Eranian509605d2012-01-30 11:50:37 +0100476 } else {
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200477 signal(SIGWINCH, SIG_DFL);
Stephane Eranian509605d2012-01-30 11:50:37 +0100478 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200479 break;
480 case 'E':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200481 if (top->evlist->nr_entries > 1) {
Akihiro Nagaice2d17c2011-03-23 16:29:39 +0900482 /* Select 0 as the default event: */
483 int counter = 0;
484
Mike Galbraith923c42c2009-07-22 20:36:03 +0200485 fprintf(stderr, "\nAvailable events:");
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200486
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300487 evlist__for_each(top->evlist, top->sym_evsel)
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300488 fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel));
Mike Galbraith923c42c2009-07-22 20:36:03 +0200489
Arnaldo Carvalho de Meloec52d972011-03-11 10:11:48 -0300490 prompt_integer(&counter, "Enter details event counter");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200491
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200492 if (counter >= top->evlist->nr_entries) {
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -0300493 top->sym_evsel = perf_evlist__first(top->evlist);
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300494 fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel));
Mike Galbraith923c42c2009-07-22 20:36:03 +0200495 sleep(1);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200496 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200497 }
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300498 evlist__for_each(top->evlist, top->sym_evsel)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200499 if (top->sym_evsel->idx == counter)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200500 break;
Arnaldo Carvalho de Meloec52d972011-03-11 10:11:48 -0300501 } else
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -0300502 top->sym_evsel = perf_evlist__first(top->evlist);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200503 break;
504 case 'f':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200505 prompt_integer(&top->count_filter, "Enter display event count filter");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200506 break;
507 case 'F':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200508 prompt_percent(&top->sym_pcnt_filter,
509 "Enter details display event filter (percent)");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200510 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200511 case 'K':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200512 top->hide_kernel_symbols = !top->hide_kernel_symbols;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200513 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200514 case 'q':
515 case 'Q':
516 printf("exiting.\n");
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200517 if (top->dump_symtab)
518 perf_session__fprintf_dsos(top->session, stderr);
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300519 ret = false;
520 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200521 case 's':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200522 perf_top__prompt_symbol(top, "Enter details symbol");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200523 break;
524 case 'S':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200525 if (!top->sym_filter_entry)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200526 break;
527 else {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200528 struct hist_entry *syme = top->sym_filter_entry;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200529
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200530 top->sym_filter_entry = NULL;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200531 __zero_source_counters(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200532 }
533 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200534 case 'U':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200535 top->hide_user_symbols = !top->hide_user_symbols;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200536 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200537 case 'z':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200538 top->zero = !top->zero;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200539 break;
Ingo Molnar83a09442009-08-15 12:26:57 +0200540 default:
541 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200542 }
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300543
544 return ret;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200545}
546
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300547static void perf_top__sort_new_samples(void *arg)
548{
549 struct perf_top *t = arg;
550 perf_top__reset_sample_counters(t);
551
552 if (t->evlist->selected != NULL)
553 t->sym_evsel = t->evlist->selected;
554
Namhyung Kimc1fb5652013-10-11 14:15:38 +0900555 hists__collapse_resort(&t->sym_evsel->hists, NULL);
Namhyung Kim3a5714f2013-05-14 11:09:01 +0900556 hists__output_resort(&t->sym_evsel->hists);
557 hists__decay_entries(&t->sym_evsel->hists,
558 t->hide_user_symbols,
559 t->hide_kernel_symbols);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300560}
561
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200562static void *display_thread_tui(void *arg)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200563{
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200564 struct perf_evsel *pos;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200565 struct perf_top *top = arg;
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300566 const char *help = "For a higher level overview, try: perf top --sort comm,dso";
Namhyung Kim9783adf2012-11-02 14:50:05 +0900567 struct hist_browser_timer hbt = {
568 .timer = perf_top__sort_new_samples,
569 .arg = top,
570 .refresh = top->delay_secs,
571 };
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300572
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200573 perf_top__sort_new_samples(top);
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200574
575 /*
576 * Initialize the uid_filter_str, in the future the TUI will allow
577 * Zooming in/out UIDs. For now juse use whatever the user passed
578 * via --uid.
579 */
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300580 evlist__for_each(top->evlist, pos)
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300581 pos->hists.uid_filter_str = top->record_opts.target.uid_str;
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200582
Namhyung Kimfa5df942013-05-14 11:09:05 +0900583 perf_evlist__tui_browse_hists(top->evlist, help, &hbt, top->min_percent,
Namhyung Kim68d80752012-11-02 14:50:06 +0900584 &top->session->header.env);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300585
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300586 done = 1;
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200587 return NULL;
588}
589
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200590static void *display_thread(void *arg)
Ingo Molnar07800602009-04-20 15:00:56 +0200591{
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200592 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
Mike Galbraith923c42c2009-07-22 20:36:03 +0200593 struct termios tc, save;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200594 struct perf_top *top = arg;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200595 int delay_msecs, c;
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200596
Mike Galbraith923c42c2009-07-22 20:36:03 +0200597 tcgetattr(0, &save);
598 tc = save;
599 tc.c_lflag &= ~(ICANON | ECHO);
600 tc.c_cc[VMIN] = 0;
601 tc.c_cc[VTIME] = 0;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200602
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300603 pthread__unblock_sigwinch();
Mike Galbraith923c42c2009-07-22 20:36:03 +0200604repeat:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200605 delay_msecs = top->delay_secs * 1000;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200606 tcsetattr(0, TCSANOW, &tc);
607 /* trash return*/
608 getc(stdin);
Ingo Molnar07800602009-04-20 15:00:56 +0200609
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300610 while (!done) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200611 perf_top__print_sym_table(top);
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300612 /*
613 * Either timeout expired or we got an EINTR due to SIGWINCH,
614 * refresh screen in both cases.
615 */
616 switch (poll(&stdin_poll, 1, delay_msecs)) {
617 case 0:
618 continue;
619 case -1:
620 if (errno == EINTR)
621 continue;
622 /* Fall trhu */
623 default:
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300624 c = getc(stdin);
625 tcsetattr(0, TCSAFLUSH, &save);
626
627 if (perf_top__handle_keypress(top, c))
628 goto repeat;
629 done = 1;
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300630 }
631 }
Ingo Molnar07800602009-04-20 15:00:56 +0200632
633 return NULL;
634}
635
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300636static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym)
Ingo Molnar07800602009-04-20 15:00:56 +0200637{
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300638 const char *name = sym->name;
Ingo Molnar07800602009-04-20 15:00:56 +0200639
Anton Blanchard3a3393e2009-07-01 09:00:47 +1000640 /*
641 * ppc64 uses function descriptors and appends a '.' to the
642 * start of every instruction address. Remove it.
643 */
644 if (name[0] == '.')
645 name++;
646
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300647 if (!strcmp(name, "_text") ||
648 !strcmp(name, "_etext") ||
649 !strcmp(name, "_sinittext") ||
650 !strncmp("init_module", name, 11) ||
651 !strncmp("cleanup_module", name, 14) ||
652 strstr(name, "_text_start") ||
653 strstr(name, "_text_end"))
Ingo Molnar07800602009-04-20 15:00:56 +0200654 return 1;
655
David Ahern82d1deb2013-11-18 13:32:45 -0700656 if (symbol__is_idle(sym))
657 sym->ignore = true;
Ingo Molnar07800602009-04-20 15:00:56 +0200658
Ingo Molnar07800602009-04-20 15:00:56 +0200659 return 0;
660}
661
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200662static void perf_event__process_sample(struct perf_tool *tool,
663 const union perf_event *event,
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200664 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200665 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200666 struct machine *machine)
Ingo Molnar07800602009-04-20 15:00:56 +0200667{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200668 struct perf_top *top = container_of(tool, struct perf_top, tool);
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300669 struct symbol *parent = NULL;
Adrian Hunteref893252013-08-27 11:23:06 +0300670 u64 ip = sample->ip;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200671 struct addr_location al;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300672 int err;
Ingo Molnar07800602009-04-20 15:00:56 +0200673
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300674 if (!machine && perf_guest) {
David Ahern6b118e92012-07-30 22:31:35 -0600675 static struct intlist *seen;
676
677 if (!seen)
Arnaldo Carvalho de Meloffe0fb72013-01-24 16:17:27 -0300678 seen = intlist__new(NULL);
David Ahern6b118e92012-07-30 22:31:35 -0600679
Adrian Hunteref893252013-08-27 11:23:06 +0300680 if (!intlist__has_entry(seen, sample->pid)) {
David Ahern6b118e92012-07-30 22:31:35 -0600681 pr_err("Can't find guest [%d]'s kernel information\n",
Adrian Hunteref893252013-08-27 11:23:06 +0300682 sample->pid);
683 intlist__add(seen, sample->pid);
David Ahern6b118e92012-07-30 22:31:35 -0600684 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800685 return;
686 }
687
Joerg Roedel0c095712012-02-10 18:05:04 +0100688 if (!machine) {
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300689 pr_err("%u unprocessable samples recorded.\r",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300690 top->session->stats.nr_unprocessable_samples++);
Joerg Roedel0c095712012-02-10 18:05:04 +0100691 return;
692 }
693
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200694 if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200695 top->exact_samples++;
Peter Zijlstra1676b8a2010-03-04 14:19:36 +0100696
Adrian Huntere44baa32013-08-08 14:32:25 +0300697 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0 ||
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200698 al.filtered)
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200699 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200700
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200701 if (!top->kptr_restrict_warned &&
Arnaldo Carvalho de Melo5f6f5582011-05-27 11:53:28 -0300702 symbol_conf.kptr_restrict &&
703 al.cpumode == PERF_RECORD_MISC_KERNEL) {
704 ui__warning(
705"Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
706"Check /proc/sys/kernel/kptr_restrict.\n\n"
707"Kernel%s samples will not be resolved.\n",
708 !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ?
709 " modules" : "");
710 if (use_browser <= 0)
711 sleep(5);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200712 top->kptr_restrict_warned = true;
Arnaldo Carvalho de Melo5f6f5582011-05-27 11:53:28 -0300713 }
714
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200715 if (al.sym == NULL) {
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300716 const char *msg = "Kernel samples will not be resolved.\n";
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200717 /*
718 * As we do lazy loading of symtabs we only will know if the
719 * specified vmlinux file is invalid when we actually have a
720 * hit in kernel space and then try to load it. So if we get
721 * here and there are _no_ symbols in the DSO backing the
722 * kernel map, bail out.
723 *
724 * We may never get here, for instance, if we use -K/
725 * --hide-kernel-symbols, even if the user specifies an
726 * invalid --vmlinux ;-)
727 */
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200728 if (!top->kptr_restrict_warned && !top->vmlinux_warned &&
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300729 al.map == machine->vmlinux_maps[MAP__FUNCTION] &&
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200730 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300731 if (symbol_conf.vmlinux_name) {
732 ui__warning("The %s file can't be used.\n%s",
733 symbol_conf.vmlinux_name, msg);
734 } else {
735 ui__warning("A vmlinux file was not found.\n%s",
736 msg);
737 }
738
739 if (use_browser <= 0)
740 sleep(5);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200741 top->vmlinux_warned = true;
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200742 }
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200743 }
744
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300745 if (al.sym == NULL || !al.sym->ignore) {
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300746 struct hist_entry *he;
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200747
Namhyung Kim2dc9fb12014-01-14 14:25:35 +0900748 err = sample__resolve_callchain(sample, &parent, evsel, &al,
749 top->max_stack);
750 if (err)
751 return;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300752
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200753 he = perf_evsel__add_hist_entry(evsel, &al, sample);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300754 if (he == NULL) {
755 pr_err("Problem incrementing symbol period, skipping event\n");
756 return;
Arnaldo Carvalho de Melo58078062011-03-01 10:43:03 -0300757 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300758
Namhyung Kim2dc9fb12014-01-14 14:25:35 +0900759 err = hist_entry__append_callchain(he, sample);
760 if (err)
761 return;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300762
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900763 if (sort__has_sym)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200764 perf_top__record_precise_ip(top, he, evsel->idx, ip);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200765 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300766
767 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200768}
769
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200770static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
Ingo Molnar07800602009-04-20 15:00:56 +0200771{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200772 struct perf_sample sample;
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200773 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200774 struct perf_session *session = top->session;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200775 union perf_event *event;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200776 struct machine *machine;
777 u8 origin;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200778 int ret;
Ingo Molnar07800602009-04-20 15:00:56 +0200779
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200780 while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) {
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300781 ret = perf_evlist__parse_sample(top->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200782 if (ret) {
783 pr_err("Can't parse sample, err = %d\n", ret);
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800784 goto next_event;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200785 }
Arnaldo Carvalho de Melo04391de2011-01-15 10:40:59 -0200786
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200787 evsel = perf_evlist__id2evsel(session->evlist, sample.id);
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200788 assert(evsel != NULL);
789
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200790 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
791
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200792 if (event->header.type == PERF_RECORD_SAMPLE)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200793 ++top->samples;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200794
795 switch (origin) {
796 case PERF_RECORD_MISC_USER:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200797 ++top->us_samples;
798 if (top->hide_user_symbols)
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800799 goto next_event;
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300800 machine = &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200801 break;
802 case PERF_RECORD_MISC_KERNEL:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200803 ++top->kernel_samples;
804 if (top->hide_kernel_symbols)
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800805 goto next_event;
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300806 machine = &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200807 break;
808 case PERF_RECORD_MISC_GUEST_KERNEL:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200809 ++top->guest_kernel_samples;
Adrian Hunteref893252013-08-27 11:23:06 +0300810 machine = perf_session__find_machine(session,
811 sample.pid);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200812 break;
813 case PERF_RECORD_MISC_GUEST_USER:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200814 ++top->guest_us_samples;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200815 /*
816 * TODO: we don't process guest user from host side
817 * except simple counting.
818 */
819 /* Fall thru */
820 default:
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800821 goto next_event;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200822 }
823
824
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200825 if (event->header.type == PERF_RECORD_SAMPLE) {
826 perf_event__process_sample(&top->tool, event, evsel,
827 &sample, machine);
828 } else if (event->header.type < PERF_RECORD_MAX) {
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200829 hists__inc_nr_events(&evsel->hists, event->header.type);
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200830 machine__process_event(machine, event, &sample);
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200831 } else
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300832 ++session->stats.nr_unknown_events;
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800833next_event:
834 perf_evlist__mmap_consume(top->evlist, idx);
Ingo Molnar07800602009-04-20 15:00:56 +0200835 }
Ingo Molnar07800602009-04-20 15:00:56 +0200836}
837
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200838static void perf_top__mmap_read(struct perf_top *top)
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200839{
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200840 int i;
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200841
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200842 for (i = 0; i < top->evlist->nr_mmaps; i++)
843 perf_top__mmap_read_idx(top, i);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200844}
845
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300846static int perf_top__start_counters(struct perf_top *top)
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200847{
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300848 char msg[512];
Jiri Olsa6a4bb042012-08-08 12:22:36 +0200849 struct perf_evsel *counter;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200850 struct perf_evlist *evlist = top->evlist;
Arnaldo Carvalho de Melob4006792013-12-19 14:43:45 -0300851 struct record_opts *opts = &top->record_opts;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200852
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300853 perf_evlist__config(evlist, opts);
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200854
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300855 evlist__for_each(evlist, counter) {
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200856try_again:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200857 if (perf_evsel__open(counter, top->evlist->cpus,
Jiri Olsa6a4bb042012-08-08 12:22:36 +0200858 top->evlist->threads) < 0) {
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300859 if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200860 if (verbose)
Arnaldo Carvalho de Meloc0a54342012-12-13 14:16:30 -0300861 ui__warning("%s\n", msg);
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200862 goto try_again;
863 }
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300864
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300865 perf_evsel__open_strerror(counter, &opts->target,
866 errno, msg, sizeof(msg));
867 ui__error("%s\n", msg);
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300868 goto out_err;
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200869 }
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200870 }
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200871
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300872 if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900873 ui__error("Failed to mmap with %d (%s)\n",
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300874 errno, strerror(errno));
875 goto out_err;
876 }
877
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300878 return 0;
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300879
880out_err:
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300881 return -1;
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200882}
883
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900884static int perf_top__setup_sample_type(struct perf_top *top __maybe_unused)
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300885{
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900886 if (!sort__has_sym) {
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300887 if (symbol_conf.use_callchain) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900888 ui__error("Selected -g but \"sym\" not present in --sort/-s.");
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300889 return -EINVAL;
890 }
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300891 } else if (callchain_param.mode != CHAIN_NONE) {
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300892 if (callchain_register_param(&callchain_param) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900893 ui__error("Can't register callchain params.\n");
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300894 return -EINVAL;
895 }
896 }
897
898 return 0;
899}
900
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200901static int __cmd_top(struct perf_top *top)
Ingo Molnar716c69f2009-06-07 17:31:52 +0200902{
Arnaldo Carvalho de Melob4006792013-12-19 14:43:45 -0300903 struct record_opts *opts = &top->record_opts;
Ingo Molnar716c69f2009-06-07 17:31:52 +0200904 pthread_t thread;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300905 int ret;
Jiri Olsaf5fc1412013-10-15 16:27:32 +0200906
Jiri Olsa6a4d98d2013-10-15 16:27:33 +0200907 top->session = perf_session__new(NULL, false, NULL);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200908 if (top->session == NULL)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200909 return -ENOMEM;
Ingo Molnar07800602009-04-20 15:00:56 +0200910
Adrian Hunter36035f72013-08-08 14:32:21 +0300911 machines__set_symbol_filter(&top->session->machines, symbol_filter);
912
Sukadev Bhattiprolu0d3942d2013-05-14 22:56:51 -0700913 if (!objdump_path) {
914 ret = perf_session_env__lookup_objdump(&top->session->header.env);
915 if (ret)
916 goto out_delete;
917 }
918
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200919 ret = perf_top__setup_sample_type(top);
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300920 if (ret)
921 goto out_delete;
922
Arnaldo Carvalho de Meloa33fbd52013-11-11 11:36:12 -0300923 machine__synthesize_threads(&top->session->machines.host, &opts->target,
924 top->evlist->threads, false);
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300925 ret = perf_top__start_counters(top);
926 if (ret)
927 goto out_delete;
928
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200929 top->session->evlist = top->evlist;
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -0300930 perf_session__set_id_hdr_size(top->session);
Ingo Molnar07800602009-04-20 15:00:56 +0200931
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300932 /*
933 * When perf is starting the traced process, all the events (apart from
934 * group members) have enable_on_exec=1 set, so don't spoil it by
935 * prematurely enabling them.
936 *
937 * XXX 'top' still doesn't start workloads like record, trace, but should,
938 * so leave the check here.
939 */
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -0300940 if (!target__none(&opts->target))
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300941 perf_evlist__enable(top->evlist);
942
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200943 /* Wait for a minimal set of events before starting the snapshot */
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200944 poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200945
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200946 perf_top__mmap_read(top);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200947
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300948 ret = -1;
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200949 if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui :
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200950 display_thread), top)) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900951 ui__error("Could not create display thread.\n");
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300952 goto out_delete;
Ingo Molnar07800602009-04-20 15:00:56 +0200953 }
954
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200955 if (top->realtime_prio) {
Ingo Molnar07800602009-04-20 15:00:56 +0200956 struct sched_param param;
957
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200958 param.sched_priority = top->realtime_prio;
Ingo Molnar07800602009-04-20 15:00:56 +0200959 if (sched_setscheduler(0, SCHED_FIFO, &param)) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900960 ui__error("Could not set realtime priority.\n");
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300961 goto out_delete;
Ingo Molnar07800602009-04-20 15:00:56 +0200962 }
963 }
964
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300965 while (!done) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200966 u64 hits = top->samples;
Ingo Molnar07800602009-04-20 15:00:56 +0200967
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200968 perf_top__mmap_read(top);
Ingo Molnar07800602009-04-20 15:00:56 +0200969
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200970 if (hits == top->samples)
971 ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
Ingo Molnar07800602009-04-20 15:00:56 +0200972 }
973
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300974 ret = 0;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300975out_delete:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200976 perf_session__delete(top->session);
977 top->session = NULL;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300978
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300979 return ret;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300980}
981
982static int
Jiri Olsaae779a62013-10-26 16:25:34 +0200983callchain_opt(const struct option *opt, const char *arg, int unset)
984{
985 symbol_conf.use_callchain = true;
986 return record_callchain_opt(opt, arg, unset);
987}
988
989static int
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200990parse_callchain_opt(const struct option *opt, const char *arg, int unset)
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300991{
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300992 symbol_conf.use_callchain = true;
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300993 return record_parse_callchain_opt(opt, arg, unset);
Ingo Molnar07800602009-04-20 15:00:56 +0200994}
Ingo Molnarb456bae2009-05-26 09:17:18 +0200995
Jiri Olsaeb853e82014-02-03 12:44:42 +0100996static int perf_top_config(const char *var, const char *value, void *cb)
997{
998 struct perf_top *top = cb;
999
1000 if (!strcmp(var, "top.call-graph"))
1001 return record_parse_callchain(value, &top->record_opts);
1002
1003 return perf_default_config(var, value, cb);
1004}
1005
Namhyung Kimfa5df942013-05-14 11:09:05 +09001006static int
1007parse_percent_limit(const struct option *opt, const char *arg,
1008 int unset __maybe_unused)
1009{
1010 struct perf_top *top = opt->value;
1011
1012 top->min_percent = strtof(arg, NULL);
1013 return 0;
1014}
1015
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001016int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001017{
Namhyung Kimd37a92d2013-11-01 16:33:14 +09001018 int status = -1;
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001019 char errbuf[BUFSIZ];
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001020 struct perf_top top = {
1021 .count_filter = 5,
1022 .delay_secs = 2,
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001023 .record_opts = {
1024 .mmap_pages = UINT_MAX,
1025 .user_freq = UINT_MAX,
1026 .user_interval = ULLONG_MAX,
1027 .freq = 4000, /* 4 KHz */
Waiman Long5dbb6e82013-10-18 10:38:49 -04001028 .target = {
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001029 .uses_mmap = true,
1030 },
Namhyung Kimd1cb9fc2012-05-16 18:45:49 +09001031 },
Waiman Long5dbb6e82013-10-18 10:38:49 -04001032 .max_stack = PERF_MAX_STACK_DEPTH,
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001033 .sym_pcnt_filter = 5,
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001034 };
Arnaldo Carvalho de Melob4006792013-12-19 14:43:45 -03001035 struct record_opts *opts = &top.record_opts;
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001036 struct target *target = &opts->target;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001037 const struct option options[] = {
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001038 OPT_CALLBACK('e', "event", &top.evlist, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001039 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001040 parse_events_option),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001041 OPT_U64('c', "count", &opts->user_interval, "event period to sample"),
1042 OPT_STRING('p', "pid", &target->pid, "pid",
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001043 "profile events on existing process id"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001044 OPT_STRING('t', "tid", &target->tid, "tid",
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001045 "profile events on existing thread id"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001046 OPT_BOOLEAN('a', "all-cpus", &target->system_wide,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001047 "system-wide collection from all CPUs"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001048 OPT_STRING('C', "cpu", &target->cpu_list, "cpu",
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001049 "list of cpus to monitor"),
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001050 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1051 "file", "vmlinux pathname"),
Willy Tarreaufc2be692013-09-14 10:32:59 +02001052 OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
1053 "don't load vmlinux even if found"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001054 OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001055 "hide kernel symbols"),
Jiri Olsa994a1f72013-09-01 12:36:12 +02001056 OPT_CALLBACK('m', "mmap-pages", &opts->mmap_pages, "pages",
1057 "number of mmap data pages",
1058 perf_evlist__parse_mmap_pages),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001059 OPT_INTEGER('r', "realtime", &top.realtime_prio,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001060 "collect data with this RT SCHED_FIFO priority"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001061 OPT_INTEGER('d', "delay", &top.delay_secs,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001062 "number of seconds to delay between refreshes"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001063 OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001064 "dump the symbol table used for profiling"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001065 OPT_INTEGER('f', "count-filter", &top.count_filter,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001066 "only display functions with more events than this"),
David Ahernbf806692013-11-14 20:51:30 -07001067 OPT_BOOLEAN(0, "group", &opts->group,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001068 "put the counters into a counter group"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001069 OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit,
1070 "child tasks do not inherit counters"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001071 OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name",
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001072 "symbol to annotate"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001073 OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"),
1074 OPT_UINTEGER('F', "freq", &opts->user_freq, "profile at this frequency"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001075 OPT_INTEGER('E', "entries", &top.print_entries,
Ingo Molnar6e53cdf2009-06-04 08:53:05 +02001076 "display this many functions"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001077 OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001078 "hide user symbols"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001079 OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"),
1080 OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"),
Ian Munsiec0555642010-04-13 18:37:33 +10001081 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar3da297a2009-06-07 17:39:02 +02001082 "be more verbose (show counter open errors, etc)"),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001083 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
Andi Kleenf5d05bc2013-09-20 07:40:41 -07001084 "sort by key(s): pid, comm, dso, symbol, parent, weight, local_weight,"
Andi Kleen475eeab2013-09-20 07:40:43 -07001085 " abort, in_tx, transaction"),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001086 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1087 "Show a column with the number of samples"),
David Ahernbf806692013-11-14 20:51:30 -07001088 OPT_CALLBACK_NOOPT('g', NULL, &top.record_opts,
Jiri Olsaae779a62013-10-26 16:25:34 +02001089 NULL, "enables call-graph recording",
1090 &callchain_opt),
1091 OPT_CALLBACK(0, "call-graph", &top.record_opts,
1092 "mode[,dump_size]", record_callchain_help,
1093 &parse_callchain_opt),
Waiman Long5dbb6e82013-10-18 10:38:49 -04001094 OPT_INTEGER(0, "max-stack", &top.max_stack,
1095 "Set the maximum stack depth when parsing the callchain. "
1096 "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
Greg Priceb21484f2012-12-06 21:48:05 -08001097 OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
1098 "ignore callees of these functions in call graphs",
1099 report_parse_ignore_callees_opt),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001100 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1101 "Show a column with the sum of periods"),
1102 OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1103 "only consider symbols in these dsos"),
1104 OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1105 "only consider symbols in these comms"),
1106 OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1107 "only consider these symbols"),
Arnaldo Carvalho de Melo64c6f0c2011-10-06 12:48:31 -03001108 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
1109 "Interleave source code with assembly code (default)"),
1110 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
1111 "Display raw encoding of assembly instructions (default)"),
Sukadev Bhattiprolu0d3942d2013-05-14 22:56:51 -07001112 OPT_STRING(0, "objdump", &objdump_path, "path",
1113 "objdump binary to use for disassembly and annotations"),
Arnaldo Carvalho de Melo64c6f0c2011-10-06 12:48:31 -03001114 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
1115 "Specify disassembler style (e.g. -M intel for intel syntax)"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001116 OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
Namhyung Kimfa5df942013-05-14 11:09:05 +09001117 OPT_CALLBACK(0, "percent-limit", &top, "percent",
1118 "Don't show entries under that percent", parse_percent_limit),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001119 OPT_END()
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001120 };
Arnaldo Carvalho de Melobe772842012-10-01 15:20:58 -03001121 const char * const top_usage[] = {
1122 "perf top [<options>]",
1123 NULL
1124 };
Ingo Molnarb456bae2009-05-26 09:17:18 +02001125
Namhyung Kim334fe7a2013-03-11 16:43:12 +09001126 top.evlist = perf_evlist__new();
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001127 if (top.evlist == NULL)
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001128 return -ENOMEM;
1129
Jiri Olsaeb853e82014-02-03 12:44:42 +01001130 perf_config(perf_top_config, &top);
1131
Ingo Molnarb456bae2009-05-26 09:17:18 +02001132 argc = parse_options(argc, argv, options, top_usage, 0);
1133 if (argc)
1134 usage_with_options(top_usage, options);
1135
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001136 if (sort_order == default_sort_order)
1137 sort_order = "dso,symbol";
1138
Namhyung Kimd37a92d2013-11-01 16:33:14 +09001139 if (setup_sorting() < 0) {
1140 parse_options_usage(top_usage, options, "s", 1);
1141 goto out_delete_evlist;
1142 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001143
Namhyung Kim3a5714f2013-05-14 11:09:01 +09001144 /* display thread wants entries to be collapsed in a different tree */
1145 sort__need_collapse = 1;
1146
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001147 if (top.use_stdio)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -02001148 use_browser = 0;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001149 else if (top.use_tui)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -02001150 use_browser = 1;
1151
1152 setup_browser(false);
1153
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001154 status = target__validate(target);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001155 if (status) {
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001156 target__strerror(target, status, errbuf, BUFSIZ);
Ingo Molnarea432a82013-11-13 00:26:09 +01001157 ui__warning("%s\n", errbuf);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001158 }
Namhyung Kim4bd0f2d2012-04-26 14:15:18 +09001159
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001160 status = target__parse_uid(target);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001161 if (status) {
1162 int saved_errno = errno;
1163
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001164 target__strerror(target, status, errbuf, BUFSIZ);
Ingo Molnarea432a82013-11-13 00:26:09 +01001165 ui__error("%s\n", errbuf);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001166
1167 status = -saved_errno;
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001168 goto out_delete_evlist;
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001169 }
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001170
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001171 if (target__none(target))
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001172 target->system_wide = true;
Arnaldo Carvalho de Melo10b47d52012-05-07 16:33:56 -03001173
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001174 if (perf_evlist__create_maps(top.evlist, target) < 0)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001175 usage_with_options(top_usage, options);
1176
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001177 if (!top.evlist->nr_entries &&
1178 perf_evlist__add_default(top.evlist) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +09001179 ui__error("Not enough memory for event selector list\n");
Arnaldo Carvalho de Melo03ad9742014-01-03 15:56:06 -03001180 goto out_delete_evlist;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001181 }
Arnaldo Carvalho de Melo5a8e5a32009-11-17 18:38:01 -02001182
Arnaldo Carvalho de Melod04b35f2011-11-11 22:17:32 -02001183 symbol_conf.nr_events = top.evlist->nr_entries;
1184
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001185 if (top.delay_secs < 1)
1186 top.delay_secs = 1;
Frederic Weisbecker2f335a02009-06-05 19:31:01 +02001187
Arnaldo Carvalho de Melob4006792013-12-19 14:43:45 -03001188 if (record_opts__config(opts)) {
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001189 status = -EINVAL;
Arnaldo Carvalho de Melo03ad9742014-01-03 15:56:06 -03001190 goto out_delete_evlist;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001191 }
1192
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -03001193 top.sym_evsel = perf_evlist__first(top.evlist);
Arnaldo Carvalho de Melocc841582011-01-11 15:16:52 -02001194
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001195 symbol_conf.priv_size = sizeof(struct annotation);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001196
1197 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1198 if (symbol__init() < 0)
1199 return -1;
1200
Namhyung Kim08e71542013-04-03 21:26:19 +09001201 sort__setup_elide(stdout);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001202
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001203 get_term_dimensions(&top.winsize);
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001204 if (top.print_entries == 0) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001205 struct sigaction act = {
1206 .sa_sigaction = perf_top__sig_winch,
1207 .sa_flags = SA_SIGINFO,
1208 };
1209 perf_top__update_print_entries(&top);
1210 sigaction(SIGWINCH, &act, NULL);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -02001211 }
1212
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001213 status = __cmd_top(&top);
Arnaldo Carvalho de Melo806fb632011-11-29 08:05:52 -02001214
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001215out_delete_evlist:
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001216 perf_evlist__delete(top.evlist);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001217
1218 return status;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001219}