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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"
Ingo Molnar07800602009-04-20 15:00:56 +020043
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020044#include "util/debug.h"
45
Ingo Molnar07800602009-04-20 15:00:56 +020046#include <assert.h>
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -030047#include <elf.h>
Ingo Molnar07800602009-04-20 15:00:56 +020048#include <fcntl.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020049
Ingo Molnar07800602009-04-20 15:00:56 +020050#include <stdio.h>
Mike Galbraith923c42c2009-07-22 20:36:03 +020051#include <termios.h>
52#include <unistd.h>
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -020053#include <inttypes.h>
Ingo Molnar0e9b20b2009-05-26 09:17:18 +020054
Ingo Molnar07800602009-04-20 15:00:56 +020055#include <errno.h>
Ingo Molnar07800602009-04-20 15:00:56 +020056#include <time.h>
57#include <sched.h>
Ingo Molnar07800602009-04-20 15:00:56 +020058
59#include <sys/syscall.h>
60#include <sys/ioctl.h>
61#include <sys/poll.h>
62#include <sys/prctl.h>
63#include <sys/wait.h>
64#include <sys/uio.h>
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -030065#include <sys/utsname.h>
Ingo Molnar07800602009-04-20 15:00:56 +020066#include <sys/mman.h>
67
68#include <linux/unistd.h>
69#include <linux/types.h>
70
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -030071static volatile int done;
72
Namhyung Kim933cbb12013-05-14 11:08:59 +090073#define HEADER_LINE_NR 5
74
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020075static void perf_top__update_print_entries(struct perf_top *top)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020076{
Namhyung Kim933cbb12013-05-14 11:08:59 +090077 top->print_entries = top->winsize.ws_row - HEADER_LINE_NR;
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020078}
79
Irina Tirdea1d037ca2012-09-11 01:15:03 +030080static void perf_top__sig_winch(int sig __maybe_unused,
81 siginfo_t *info __maybe_unused, void *arg)
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020082{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020083 struct perf_top *top = arg;
84
85 get_term_dimensions(&top->winsize);
86 perf_top__update_print_entries(top);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -020087}
88
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -020089static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he)
Mike Galbraith923c42c2009-07-22 20:36:03 +020090{
91 struct symbol *sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -020092 struct annotation *notes;
Arnaldo Carvalho de Melo439d4732009-10-02 03:29:58 -030093 struct map *map;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -020094 int err = -1;
Mike Galbraith923c42c2009-07-22 20:36:03 +020095
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -030096 if (!he || !he->ms.sym)
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -030097 return -1;
98
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -030099 sym = he->ms.sym;
100 map = he->ms.map;
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300101
102 /*
103 * We can't annotate with just /proc/kallsyms
104 */
Jiri Olsa44f24cb2012-07-22 14:14:32 +0200105 if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) {
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200106 pr_err("Can't annotate %s: No vmlinux file was found in the "
107 "path\n", sym->name);
108 sleep(1);
Arnaldo Carvalho de Melob0a9ab62010-03-15 11:46:58 -0300109 return -1;
Arnaldo Carvalho de Melob2698762009-11-17 18:38:02 -0200110 }
111
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200112 notes = symbol__annotation(sym);
113 if (notes->src != NULL) {
114 pthread_mutex_lock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200115 goto out_assign;
116 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200117
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200118 pthread_mutex_lock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200119
Arnaldo Carvalho de Melod04b35f2011-11-11 22:17:32 -0200120 if (symbol__alloc_hist(sym) < 0) {
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300121 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200122 pr_err("Not enough memory for annotating '%s' symbol!\n",
123 sym->name);
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200124 sleep(1);
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300125 return err;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200126 }
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200127
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300128 err = symbol__annotate(sym, map, 0);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200129 if (err == 0) {
Mike Galbraith923c42c2009-07-22 20:36:03 +0200130out_assign:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200131 top->sym_filter_entry = he;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200132 }
Arnaldo Carvalho de Meloc97cf422011-02-22 12:02:07 -0300133
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200134 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200135 return err;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200136}
137
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300138static void __zero_source_counters(struct hist_entry *he)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200139{
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300140 struct symbol *sym = he->ms.sym;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200141 symbol__annotate_zero_histograms(sym);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200142}
143
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300144static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
145{
146 struct utsname uts;
147 int err = uname(&uts);
148
149 ui__warning("Out of bounds address found:\n\n"
150 "Addr: %" PRIx64 "\n"
151 "DSO: %s %c\n"
152 "Map: %" PRIx64 "-%" PRIx64 "\n"
153 "Symbol: %" PRIx64 "-%" PRIx64 " %c %s\n"
154 "Arch: %s\n"
155 "Kernel: %s\n"
156 "Tools: %s\n\n"
157 "Not all samples will be on the annotation output.\n\n"
158 "Please report to linux-kernel@vger.kernel.org\n",
159 ip, map->dso->long_name, dso__symtab_origin(map->dso),
160 map->start, map->end, sym->start, sym->end,
161 sym->binding == STB_GLOBAL ? 'g' :
162 sym->binding == STB_LOCAL ? 'l' : 'w', sym->name,
163 err ? "[unknown]" : uts.machine,
164 err ? "[unknown]" : uts.release, perf_version_string);
165 if (use_browser <= 0)
166 sleep(5);
167
168 map->erange_warned = true;
169}
170
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200171static void perf_top__record_precise_ip(struct perf_top *top,
172 struct hist_entry *he,
173 int counter, u64 ip)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200174{
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200175 struct annotation *notes;
176 struct symbol *sym;
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300177 int err;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200178
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300179 if (he == NULL || he->ms.sym == NULL ||
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200180 ((top->sym_filter_entry == NULL ||
181 top->sym_filter_entry->ms.sym != he->ms.sym) && use_browser != 1))
Mike Galbraith923c42c2009-07-22 20:36:03 +0200182 return;
183
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300184 sym = he->ms.sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200185 notes = symbol__annotation(sym);
186
187 if (pthread_mutex_trylock(&notes->lock))
Mike Galbraith923c42c2009-07-22 20:36:03 +0200188 return;
189
Arnaldo Carvalho de Melod04b35f2011-11-11 22:17:32 -0200190 if (notes->src == NULL && symbol__alloc_hist(sym) < 0) {
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300191 pthread_mutex_unlock(&notes->lock);
192 pr_err("Not enough memory for annotating '%s' symbol!\n",
193 sym->name);
194 sleep(1);
195 return;
196 }
197
198 ip = he->ms.map->map_ip(he->ms.map, ip);
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300199 err = symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200200
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200201 pthread_mutex_unlock(&notes->lock);
Arnaldo Carvalho de Melo31d68e72012-03-27 12:55:57 -0300202
203 if (err == -ERANGE && !he->ms.map->erange_warned)
204 ui__warn_map_erange(he->ms.map, sym, ip);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200205}
206
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200207static void perf_top__show_details(struct perf_top *top)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200208{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200209 struct hist_entry *he = top->sym_filter_entry;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200210 struct annotation *notes;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200211 struct symbol *symbol;
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200212 int more;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200213
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300214 if (!he)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200215 return;
216
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300217 symbol = he->ms.sym;
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200218 notes = symbol__annotation(symbol);
219
220 pthread_mutex_lock(&notes->lock);
221
222 if (notes->src == NULL)
223 goto out_unlock;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200224
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300225 printf("Showing %s for %s\n", perf_evsel__name(top->sym_evsel), symbol->name);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200226 printf(" Events Pcnt (>=%d%%)\n", top->sym_pcnt_filter);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200227
Namhyung Kimdb8fd072013-03-05 14:53:21 +0900228 more = symbol__annotate_printf(symbol, he->ms.map, top->sym_evsel,
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200229 0, top->sym_pcnt_filter, top->print_entries, 4);
230 if (top->zero)
231 symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200232 else
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200233 symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx);
Arnaldo Carvalho de Melo36532462011-02-06 14:54:44 -0200234 if (more != 0)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200235 printf("%d lines not displayed, maybe increase display entries [e]\n", more);
Arnaldo Carvalho de Meloce6f4fa2011-02-08 13:27:39 -0200236out_unlock:
237 pthread_mutex_unlock(&notes->lock);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200238}
Ingo Molnar07800602009-04-20 15:00:56 +0200239
Ingo Molnar07800602009-04-20 15:00:56 +0200240static const char CONSOLE_CLEAR[] = "";
241
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200242static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel,
243 struct addr_location *al,
244 struct perf_sample *sample)
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300245{
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300246 struct hist_entry *he;
247
Namhyung Kim27a0dcb2013-05-14 11:09:02 +0900248 pthread_mutex_lock(&evsel->hists.lock);
Andi Kleen05484292013-01-24 16:10:29 +0100249 he = __hists__add_entry(&evsel->hists, al, NULL, sample->period,
250 sample->weight);
Namhyung Kim27a0dcb2013-05-14 11:09:02 +0900251 pthread_mutex_unlock(&evsel->hists.lock);
252
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300253 if (he == NULL)
254 return NULL;
255
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300256 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
257 return he;
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300258}
Ingo Molnar07800602009-04-20 15:00:56 +0200259
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200260static void perf_top__print_sym_table(struct perf_top *top)
Ingo Molnar07800602009-04-20 15:00:56 +0200261{
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -0200262 char bf[160];
263 int printed = 0;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200264 const int win_width = top->winsize.ws_col - 1;
Mike Galbraithd94b9432009-05-25 09:57:56 +0200265
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200266 puts(CONSOLE_CLEAR);
Ingo Molnar07800602009-04-20 15:00:56 +0200267
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200268 perf_top__header_snprintf(top, bf, sizeof(bf));
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -0200269 printf("%s\n", bf);
Ingo Molnar07800602009-04-20 15:00:56 +0200270
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200271 perf_top__reset_sample_counters(top);
Ingo Molnar07800602009-04-20 15:00:56 +0200272
Arnaldo Carvalho de Melo1a105f72009-11-17 15:40:55 -0200273 printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
Ingo Molnar07800602009-04-20 15:00:56 +0200274
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200275 if (top->sym_evsel->hists.stats.nr_lost_warned !=
276 top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST]) {
277 top->sym_evsel->hists.stats.nr_lost_warned =
278 top->sym_evsel->hists.stats.nr_events[PERF_RECORD_LOST];
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200279 color_fprintf(stdout, PERF_COLOR_RED,
280 "WARNING: LOST %d chunks, Check IO/CPU overload",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200281 top->sym_evsel->hists.stats.nr_lost_warned);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300282 ++printed;
Arnaldo Carvalho de Melo93fc64f2011-01-29 12:08:00 -0200283 }
284
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200285 if (top->sym_filter_entry) {
286 perf_top__show_details(top);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200287 return;
288 }
289
Namhyung Kim3a5714f2013-05-14 11:09:01 +0900290 hists__collapse_resort(&top->sym_evsel->hists);
291 hists__output_resort(&top->sym_evsel->hists);
292 hists__decay_entries(&top->sym_evsel->hists,
293 top->hide_user_symbols,
294 top->hide_kernel_symbols);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200295 hists__output_recalc_col_len(&top->sym_evsel->hists,
Namhyung Kim933cbb12013-05-14 11:08:59 +0900296 top->print_entries - printed);
Arnaldo Carvalho de Melo7cc017e2009-11-24 12:05:14 -0200297 putchar('\n');
Jiri Olsa41724e42012-10-04 21:49:38 +0900298 hists__fprintf(&top->sym_evsel->hists, false,
Namhyung Kimfa5df942013-05-14 11:09:05 +0900299 top->print_entries - printed, win_width,
300 top->min_percent, stdout);
Ingo Molnar07800602009-04-20 15:00:56 +0200301}
302
Mike Galbraith923c42c2009-07-22 20:36:03 +0200303static void prompt_integer(int *target, const char *msg)
304{
305 char *buf = malloc(0), *p;
306 size_t dummy = 0;
307 int tmp;
308
309 fprintf(stdout, "\n%s: ", msg);
310 if (getline(&buf, &dummy, stdin) < 0)
311 return;
312
313 p = strchr(buf, '\n');
314 if (p)
315 *p = 0;
316
317 p = buf;
318 while(*p) {
319 if (!isdigit(*p))
320 goto out_free;
321 p++;
322 }
323 tmp = strtoul(buf, NULL, 10);
324 *target = tmp;
325out_free:
326 free(buf);
327}
328
329static void prompt_percent(int *target, const char *msg)
330{
331 int tmp = 0;
332
333 prompt_integer(&tmp, msg);
334 if (tmp >= 0 && tmp <= 100)
335 *target = tmp;
336}
337
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200338static void perf_top__prompt_symbol(struct perf_top *top, const char *msg)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200339{
340 char *buf = malloc(0), *p;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200341 struct hist_entry *syme = top->sym_filter_entry, *n, *found = NULL;
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300342 struct rb_node *next;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200343 size_t dummy = 0;
344
345 /* zero counters of active symbol */
346 if (syme) {
Mike Galbraith923c42c2009-07-22 20:36:03 +0200347 __zero_source_counters(syme);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200348 top->sym_filter_entry = NULL;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200349 }
350
351 fprintf(stdout, "\n%s: ", msg);
352 if (getline(&buf, &dummy, stdin) < 0)
353 goto out_free;
354
355 p = strchr(buf, '\n');
356 if (p)
357 *p = 0;
358
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200359 next = rb_first(&top->sym_evsel->hists.entries);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300360 while (next) {
361 n = rb_entry(next, struct hist_entry, rb_node);
362 if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) {
363 found = n;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200364 break;
365 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300366 next = rb_next(&n->rb_node);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200367 }
368
369 if (!found) {
Kirill Smelkov66aeb6d2010-01-13 13:22:19 -0200370 fprintf(stderr, "Sorry, %s is not active.\n", buf);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200371 sleep(1);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200372 } else
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200373 perf_top__parse_source(top, found);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200374
375out_free:
376 free(buf);
377}
378
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200379static void perf_top__print_mapped_keys(struct perf_top *top)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200380{
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200381 char *name = NULL;
382
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200383 if (top->sym_filter_entry) {
384 struct symbol *sym = top->sym_filter_entry->ms.sym;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200385 name = sym->name;
386 }
387
388 fprintf(stdout, "\nMapped keys:\n");
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200389 fprintf(stdout, "\t[d] display refresh delay. \t(%d)\n", top->delay_secs);
390 fprintf(stdout, "\t[e] display entries (lines). \t(%d)\n", top->print_entries);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200391
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200392 if (top->evlist->nr_entries > 1)
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300393 fprintf(stdout, "\t[E] active event counter. \t(%s)\n", perf_evsel__name(top->sym_evsel));
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200394
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200395 fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", top->count_filter);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200396
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200397 fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", top->sym_pcnt_filter);
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200398 fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
399 fprintf(stdout, "\t[S] stop annotation.\n");
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200400
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200401 fprintf(stdout,
Kirill Smelkov1a72cfa2010-02-12 19:20:59 +0300402 "\t[K] hide kernel_symbols symbols. \t(%s)\n",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200403 top->hide_kernel_symbols ? "yes" : "no");
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200404 fprintf(stdout,
405 "\t[U] hide user symbols. \t(%s)\n",
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200406 top->hide_user_symbols ? "yes" : "no");
407 fprintf(stdout, "\t[z] toggle sample zeroing. \t(%d)\n", top->zero ? 1 : 0);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200408 fprintf(stdout, "\t[qQ] quit.\n");
409}
410
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200411static int perf_top__key_mapped(struct perf_top *top, int c)
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200412{
413 switch (c) {
414 case 'd':
415 case 'e':
416 case 'f':
417 case 'z':
418 case 'q':
419 case 'Q':
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200420 case 'K':
421 case 'U':
Kirill Smelkov6cff0e82010-02-03 16:52:08 -0200422 case 'F':
423 case 's':
424 case 'S':
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200425 return 1;
426 case 'E':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200427 return top->evlist->nr_entries > 1 ? 1 : 0;
Ingo Molnar83a09442009-08-15 12:26:57 +0200428 default:
429 break;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200430 }
431
432 return 0;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200433}
434
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300435static bool perf_top__handle_keypress(struct perf_top *top, int c)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200436{
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300437 bool ret = true;
438
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200439 if (!perf_top__key_mapped(top, c)) {
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200440 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
441 struct termios tc, save;
442
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200443 perf_top__print_mapped_keys(top);
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200444 fprintf(stdout, "\nEnter selection, or unmapped key to continue: ");
445 fflush(stdout);
446
447 tcgetattr(0, &save);
448 tc = save;
449 tc.c_lflag &= ~(ICANON | ECHO);
450 tc.c_cc[VMIN] = 0;
451 tc.c_cc[VTIME] = 0;
452 tcsetattr(0, TCSANOW, &tc);
453
454 poll(&stdin_poll, 1, -1);
455 c = getc(stdin);
456
457 tcsetattr(0, TCSAFLUSH, &save);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200458 if (!perf_top__key_mapped(top, c))
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300459 return ret;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200460 }
461
Mike Galbraith923c42c2009-07-22 20:36:03 +0200462 switch (c) {
463 case 'd':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200464 prompt_integer(&top->delay_secs, "Enter display delay");
465 if (top->delay_secs < 1)
466 top->delay_secs = 1;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200467 break;
468 case 'e':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200469 prompt_integer(&top->print_entries, "Enter display entries (lines)");
470 if (top->print_entries == 0) {
471 struct sigaction act = {
472 .sa_sigaction = perf_top__sig_winch,
473 .sa_flags = SA_SIGINFO,
474 };
475 perf_top__sig_winch(SIGWINCH, NULL, top);
476 sigaction(SIGWINCH, &act, NULL);
Stephane Eranian509605d2012-01-30 11:50:37 +0100477 } else {
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -0200478 signal(SIGWINCH, SIG_DFL);
Stephane Eranian509605d2012-01-30 11:50:37 +0100479 }
Mike Galbraith923c42c2009-07-22 20:36:03 +0200480 break;
481 case 'E':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200482 if (top->evlist->nr_entries > 1) {
Akihiro Nagaice2d17c2011-03-23 16:29:39 +0900483 /* Select 0 as the default event: */
484 int counter = 0;
485
Mike Galbraith923c42c2009-07-22 20:36:03 +0200486 fprintf(stderr, "\nAvailable events:");
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200487
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200488 list_for_each_entry(top->sym_evsel, &top->evlist->entries, node)
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300489 fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, perf_evsel__name(top->sym_evsel));
Mike Galbraith923c42c2009-07-22 20:36:03 +0200490
Arnaldo Carvalho de Meloec52d972011-03-11 10:11:48 -0300491 prompt_integer(&counter, "Enter details event counter");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200492
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200493 if (counter >= top->evlist->nr_entries) {
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -0300494 top->sym_evsel = perf_evlist__first(top->evlist);
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -0300495 fprintf(stderr, "Sorry, no such event, using %s.\n", perf_evsel__name(top->sym_evsel));
Mike Galbraith923c42c2009-07-22 20:36:03 +0200496 sleep(1);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200497 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200498 }
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200499 list_for_each_entry(top->sym_evsel, &top->evlist->entries, node)
500 if (top->sym_evsel->idx == counter)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200501 break;
Arnaldo Carvalho de Meloec52d972011-03-11 10:11:48 -0300502 } else
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -0300503 top->sym_evsel = perf_evlist__first(top->evlist);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200504 break;
505 case 'f':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200506 prompt_integer(&top->count_filter, "Enter display event count filter");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200507 break;
508 case 'F':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200509 prompt_percent(&top->sym_pcnt_filter,
510 "Enter details display event filter (percent)");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200511 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200512 case 'K':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200513 top->hide_kernel_symbols = !top->hide_kernel_symbols;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200514 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200515 case 'q':
516 case 'Q':
517 printf("exiting.\n");
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200518 if (top->dump_symtab)
519 perf_session__fprintf_dsos(top->session, stderr);
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300520 ret = false;
521 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200522 case 's':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200523 perf_top__prompt_symbol(top, "Enter details symbol");
Mike Galbraith923c42c2009-07-22 20:36:03 +0200524 break;
525 case 'S':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200526 if (!top->sym_filter_entry)
Mike Galbraith923c42c2009-07-22 20:36:03 +0200527 break;
528 else {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200529 struct hist_entry *syme = top->sym_filter_entry;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200530
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200531 top->sym_filter_entry = NULL;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200532 __zero_source_counters(syme);
Mike Galbraith923c42c2009-07-22 20:36:03 +0200533 }
534 break;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200535 case 'U':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200536 top->hide_user_symbols = !top->hide_user_symbols;
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -0200537 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200538 case 'z':
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200539 top->zero = !top->zero;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200540 break;
Ingo Molnar83a09442009-08-15 12:26:57 +0200541 default:
542 break;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200543 }
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300544
545 return ret;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200546}
547
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300548static void perf_top__sort_new_samples(void *arg)
549{
550 struct perf_top *t = arg;
551 perf_top__reset_sample_counters(t);
552
553 if (t->evlist->selected != NULL)
554 t->sym_evsel = t->evlist->selected;
555
Namhyung Kim3a5714f2013-05-14 11:09:01 +0900556 hists__collapse_resort(&t->sym_evsel->hists);
557 hists__output_resort(&t->sym_evsel->hists);
558 hists__decay_entries(&t->sym_evsel->hists,
559 t->hide_user_symbols,
560 t->hide_kernel_symbols);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300561}
562
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200563static void *display_thread_tui(void *arg)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200564{
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200565 struct perf_evsel *pos;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200566 struct perf_top *top = arg;
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300567 const char *help = "For a higher level overview, try: perf top --sort comm,dso";
Namhyung Kim9783adf2012-11-02 14:50:05 +0900568 struct hist_browser_timer hbt = {
569 .timer = perf_top__sort_new_samples,
570 .arg = top,
571 .refresh = top->delay_secs,
572 };
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300573
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200574 perf_top__sort_new_samples(top);
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200575
576 /*
577 * Initialize the uid_filter_str, in the future the TUI will allow
578 * Zooming in/out UIDs. For now juse use whatever the user passed
579 * via --uid.
580 */
581 list_for_each_entry(pos, &top->evlist->entries, node)
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300582 pos->hists.uid_filter_str = top->record_opts.target.uid_str;
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -0200583
Namhyung Kimfa5df942013-05-14 11:09:05 +0900584 perf_evlist__tui_browse_hists(top->evlist, help, &hbt, top->min_percent,
Namhyung Kim68d80752012-11-02 14:50:06 +0900585 &top->session->header.env);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300586
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300587 done = 1;
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200588 return NULL;
589}
590
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200591static void *display_thread(void *arg)
Ingo Molnar07800602009-04-20 15:00:56 +0200592{
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200593 struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
Mike Galbraith923c42c2009-07-22 20:36:03 +0200594 struct termios tc, save;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200595 struct perf_top *top = arg;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200596 int delay_msecs, c;
Frederic Weisbecker0f5486b2009-06-04 20:48:04 +0200597
Mike Galbraith923c42c2009-07-22 20:36:03 +0200598 tcgetattr(0, &save);
599 tc = save;
600 tc.c_lflag &= ~(ICANON | ECHO);
601 tc.c_cc[VMIN] = 0;
602 tc.c_cc[VTIME] = 0;
Mike Galbraith091bd2e2009-08-04 10:21:23 +0200603
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300604 pthread__unblock_sigwinch();
Mike Galbraith923c42c2009-07-22 20:36:03 +0200605repeat:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200606 delay_msecs = top->delay_secs * 1000;
Mike Galbraith923c42c2009-07-22 20:36:03 +0200607 tcsetattr(0, TCSANOW, &tc);
608 /* trash return*/
609 getc(stdin);
Ingo Molnar07800602009-04-20 15:00:56 +0200610
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300611 while (!done) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200612 perf_top__print_sym_table(top);
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300613 /*
614 * Either timeout expired or we got an EINTR due to SIGWINCH,
615 * refresh screen in both cases.
616 */
617 switch (poll(&stdin_poll, 1, delay_msecs)) {
618 case 0:
619 continue;
620 case -1:
621 if (errno == EINTR)
622 continue;
623 /* Fall trhu */
624 default:
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300625 c = getc(stdin);
626 tcsetattr(0, TCSAFLUSH, &save);
627
628 if (perf_top__handle_keypress(top, c))
629 goto repeat;
630 done = 1;
Arnaldo Carvalho de Melo3af6e332011-10-13 08:52:46 -0300631 }
632 }
Ingo Molnar07800602009-04-20 15:00:56 +0200633
634 return NULL;
635}
636
Anton Blanchard2ab52082009-07-01 09:00:46 +1000637/* Tag samples to be skipped. */
Ingo Molnarf37a2912009-07-01 12:37:06 +0200638static const char *skip_symbols[] = {
Arnaldo Carvalho de Melo4bea8b52012-04-02 11:16:24 -0300639 "intel_idle",
Anton Blanchard2ab52082009-07-01 09:00:46 +1000640 "default_idle",
Arnaldo Carvalho de Melob0e85722011-01-16 17:39:15 -0200641 "native_safe_halt",
Anton Blanchard2ab52082009-07-01 09:00:46 +1000642 "cpu_idle",
643 "enter_idle",
644 "exit_idle",
645 "mwait_idle",
Arnaldo Carvalho de Melo59b90052009-07-26 19:06:19 -0300646 "mwait_idle_with_hints",
Arnaldo Carvalho de Melo83572752009-09-25 15:02:39 -0700647 "poll_idle",
Anton Blanchard3a3393e2009-07-01 09:00:47 +1000648 "ppc64_runlatch_off",
649 "pseries_dedicated_idle_sleep",
Anton Blanchard2ab52082009-07-01 09:00:46 +1000650 NULL
651};
652
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300653static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym)
Ingo Molnar07800602009-04-20 15:00:56 +0200654{
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300655 const char *name = sym->name;
Anton Blanchard2ab52082009-07-01 09:00:46 +1000656 int i;
Ingo Molnar07800602009-04-20 15:00:56 +0200657
Anton Blanchard3a3393e2009-07-01 09:00:47 +1000658 /*
659 * ppc64 uses function descriptors and appends a '.' to the
660 * start of every instruction address. Remove it.
661 */
662 if (name[0] == '.')
663 name++;
664
Arnaldo Carvalho de Melode046872009-05-28 14:55:41 -0300665 if (!strcmp(name, "_text") ||
666 !strcmp(name, "_etext") ||
667 !strcmp(name, "_sinittext") ||
668 !strncmp("init_module", name, 11) ||
669 !strncmp("cleanup_module", name, 14) ||
670 strstr(name, "_text_start") ||
671 strstr(name, "_text_end"))
Ingo Molnar07800602009-04-20 15:00:56 +0200672 return 1;
673
Anton Blanchard2ab52082009-07-01 09:00:46 +1000674 for (i = 0; skip_symbols[i]; i++) {
675 if (!strcmp(skip_symbols[i], name)) {
Arnaldo Carvalho de Melo171b3be2011-03-11 13:36:01 -0300676 sym->ignore = true;
Anton Blanchard2ab52082009-07-01 09:00:46 +1000677 break;
678 }
679 }
Ingo Molnar07800602009-04-20 15:00:56 +0200680
Ingo Molnar07800602009-04-20 15:00:56 +0200681 return 0;
682}
683
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200684static void perf_event__process_sample(struct perf_tool *tool,
685 const union perf_event *event,
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200686 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200687 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200688 struct machine *machine)
Ingo Molnar07800602009-04-20 15:00:56 +0200689{
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200690 struct perf_top *top = container_of(tool, struct perf_top, tool);
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300691 struct symbol *parent = NULL;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200692 u64 ip = event->ip.ip;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200693 struct addr_location al;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300694 int err;
Ingo Molnar07800602009-04-20 15:00:56 +0200695
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300696 if (!machine && perf_guest) {
David Ahern6b118e92012-07-30 22:31:35 -0600697 static struct intlist *seen;
698
699 if (!seen)
Arnaldo Carvalho de Meloffe0fb72013-01-24 16:17:27 -0300700 seen = intlist__new(NULL);
David Ahern6b118e92012-07-30 22:31:35 -0600701
702 if (!intlist__has_entry(seen, event->ip.pid)) {
703 pr_err("Can't find guest [%d]'s kernel information\n",
704 event->ip.pid);
705 intlist__add(seen, event->ip.pid);
706 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800707 return;
708 }
709
Joerg Roedel0c095712012-02-10 18:05:04 +0100710 if (!machine) {
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300711 pr_err("%u unprocessable samples recorded.\r",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300712 top->session->stats.nr_unprocessable_samples++);
Joerg Roedel0c095712012-02-10 18:05:04 +0100713 return;
714 }
715
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200716 if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200717 top->exact_samples++;
Peter Zijlstra1676b8a2010-03-04 14:19:36 +0100718
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200719 if (perf_event__preprocess_sample(event, machine, &al, sample,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200720 symbol_filter) < 0 ||
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200721 al.filtered)
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200722 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200723
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200724 if (!top->kptr_restrict_warned &&
Arnaldo Carvalho de Melo5f6f5582011-05-27 11:53:28 -0300725 symbol_conf.kptr_restrict &&
726 al.cpumode == PERF_RECORD_MISC_KERNEL) {
727 ui__warning(
728"Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
729"Check /proc/sys/kernel/kptr_restrict.\n\n"
730"Kernel%s samples will not be resolved.\n",
731 !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ?
732 " modules" : "");
733 if (use_browser <= 0)
734 sleep(5);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200735 top->kptr_restrict_warned = true;
Arnaldo Carvalho de Melo5f6f5582011-05-27 11:53:28 -0300736 }
737
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200738 if (al.sym == NULL) {
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300739 const char *msg = "Kernel samples will not be resolved.\n";
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200740 /*
741 * As we do lazy loading of symtabs we only will know if the
742 * specified vmlinux file is invalid when we actually have a
743 * hit in kernel space and then try to load it. So if we get
744 * here and there are _no_ symbols in the DSO backing the
745 * kernel map, bail out.
746 *
747 * We may never get here, for instance, if we use -K/
748 * --hide-kernel-symbols, even if the user specifies an
749 * invalid --vmlinux ;-)
750 */
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200751 if (!top->kptr_restrict_warned && !top->vmlinux_warned &&
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300752 al.map == machine->vmlinux_maps[MAP__FUNCTION] &&
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200753 RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION])) {
Arnaldo Carvalho de Meloe4a338d2011-05-27 13:42:16 -0300754 if (symbol_conf.vmlinux_name) {
755 ui__warning("The %s file can't be used.\n%s",
756 symbol_conf.vmlinux_name, msg);
757 } else {
758 ui__warning("A vmlinux file was not found.\n%s",
759 msg);
760 }
761
762 if (use_browser <= 0)
763 sleep(5);
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200764 top->vmlinux_warned = true;
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200765 }
Arnaldo Carvalho de Melo72b8fa12010-01-27 21:05:49 -0200766 }
767
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300768 if (al.sym == NULL || !al.sym->ignore) {
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300769 struct hist_entry *he;
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200770
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300771 if ((sort__has_parent || symbol_conf.use_callchain) &&
772 sample->callchain) {
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200773 err = machine__resolve_callchain(machine, evsel,
774 al.thread, sample,
775 &parent);
776
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300777 if (err)
778 return;
779 }
780
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200781 he = perf_evsel__add_hist_entry(evsel, &al, sample);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300782 if (he == NULL) {
783 pr_err("Problem incrementing symbol period, skipping event\n");
784 return;
Arnaldo Carvalho de Melo58078062011-03-01 10:43:03 -0300785 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300786
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300787 if (symbol_conf.use_callchain) {
Namhyung Kim47260642012-05-31 14:43:26 +0900788 err = callchain_append(he->callchain, &callchain_cursor,
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300789 sample->period);
790 if (err)
791 return;
792 }
793
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900794 if (sort__has_sym)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200795 perf_top__record_precise_ip(top, he, evsel->idx, ip);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200796 }
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -0300797
798 return;
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200799}
800
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200801static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
Ingo Molnar07800602009-04-20 15:00:56 +0200802{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200803 struct perf_sample sample;
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200804 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200805 struct perf_session *session = top->session;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200806 union perf_event *event;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200807 struct machine *machine;
808 u8 origin;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200809 int ret;
Ingo Molnar07800602009-04-20 15:00:56 +0200810
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200811 while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) {
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300812 ret = perf_evlist__parse_sample(top->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200813 if (ret) {
814 pr_err("Can't parse sample, err = %d\n", ret);
815 continue;
816 }
Arnaldo Carvalho de Melo04391de2011-01-15 10:40:59 -0200817
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200818 evsel = perf_evlist__id2evsel(session->evlist, sample.id);
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200819 assert(evsel != NULL);
820
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200821 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
822
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200823 if (event->header.type == PERF_RECORD_SAMPLE)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200824 ++top->samples;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200825
826 switch (origin) {
827 case PERF_RECORD_MISC_USER:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200828 ++top->us_samples;
829 if (top->hide_user_symbols)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200830 continue;
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300831 machine = &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200832 break;
833 case PERF_RECORD_MISC_KERNEL:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200834 ++top->kernel_samples;
835 if (top->hide_kernel_symbols)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200836 continue;
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300837 machine = &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200838 break;
839 case PERF_RECORD_MISC_GUEST_KERNEL:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200840 ++top->guest_kernel_samples;
841 machine = perf_session__find_machine(session, event->ip.pid);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200842 break;
843 case PERF_RECORD_MISC_GUEST_USER:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200844 ++top->guest_us_samples;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200845 /*
846 * TODO: we don't process guest user from host side
847 * except simple counting.
848 */
849 /* Fall thru */
850 default:
851 continue;
852 }
853
854
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200855 if (event->header.type == PERF_RECORD_SAMPLE) {
856 perf_event__process_sample(&top->tool, event, evsel,
857 &sample, machine);
858 } else if (event->header.type < PERF_RECORD_MAX) {
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200859 hists__inc_nr_events(&evsel->hists, event->header.type);
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -0300860 machine__process_event(machine, event);
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200861 } else
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300862 ++session->stats.nr_unknown_events;
Ingo Molnar07800602009-04-20 15:00:56 +0200863 }
Ingo Molnar07800602009-04-20 15:00:56 +0200864}
865
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200866static void perf_top__mmap_read(struct perf_top *top)
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200867{
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200868 int i;
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200869
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200870 for (i = 0; i < top->evlist->nr_mmaps; i++)
871 perf_top__mmap_read_idx(top, i);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200872}
873
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300874static int perf_top__start_counters(struct perf_top *top)
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200875{
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300876 char msg[512];
Jiri Olsa6a4bb042012-08-08 12:22:36 +0200877 struct perf_evsel *counter;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200878 struct perf_evlist *evlist = top->evlist;
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300879 struct perf_record_opts *opts = &top->record_opts;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200880
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300881 perf_evlist__config(evlist, opts);
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200882
883 list_for_each_entry(counter, &evlist->entries, node) {
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200884try_again:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200885 if (perf_evsel__open(counter, top->evlist->cpus,
Jiri Olsa6a4bb042012-08-08 12:22:36 +0200886 top->evlist->threads) < 0) {
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300887 if (perf_evsel__fallback(counter, errno, msg, sizeof(msg))) {
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200888 if (verbose)
Arnaldo Carvalho de Meloc0a54342012-12-13 14:16:30 -0300889 ui__warning("%s\n", msg);
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200890 goto try_again;
891 }
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300892
Arnaldo Carvalho de Melo56e52e82012-12-13 15:10:58 -0300893 perf_evsel__open_strerror(counter, &opts->target,
894 errno, msg, sizeof(msg));
895 ui__error("%s\n", msg);
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300896 goto out_err;
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200897 }
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200898 }
Arnaldo Carvalho de Melo70db7532011-01-12 22:39:13 -0200899
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300900 if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900901 ui__error("Failed to mmap with %d (%s)\n",
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300902 errno, strerror(errno));
903 goto out_err;
904 }
905
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300906 return 0;
Arnaldo Carvalho de Meloc286c412011-03-28 09:50:11 -0300907
908out_err:
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300909 return -1;
Arnaldo Carvalho de Melo72cb7012011-01-12 10:52:47 -0200910}
911
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900912static int perf_top__setup_sample_type(struct perf_top *top __maybe_unused)
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300913{
Namhyung Kim8f0f6842013-04-05 10:26:37 +0900914 if (!sort__has_sym) {
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300915 if (symbol_conf.use_callchain) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900916 ui__error("Selected -g but \"sym\" not present in --sort/-s.");
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300917 return -EINVAL;
918 }
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300919 } else if (callchain_param.mode != CHAIN_NONE) {
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300920 if (callchain_register_param(&callchain_param) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900921 ui__error("Can't register callchain params.\n");
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300922 return -EINVAL;
923 }
924 }
925
926 return 0;
927}
928
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200929static int __cmd_top(struct perf_top *top)
Ingo Molnar716c69f2009-06-07 17:31:52 +0200930{
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300931 struct perf_record_opts *opts = &top->record_opts;
Ingo Molnar716c69f2009-06-07 17:31:52 +0200932 pthread_t thread;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300933 int ret;
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200934 /*
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200935 * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
936 * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -0200937 */
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200938 top->session = perf_session__new(NULL, O_WRONLY, false, false, NULL);
939 if (top->session == NULL)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200940 return -ENOMEM;
Ingo Molnar07800602009-04-20 15:00:56 +0200941
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200942 ret = perf_top__setup_sample_type(top);
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -0300943 if (ret)
944 goto out_delete;
945
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300946 if (perf_target__has_task(&opts->target))
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200947 perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200948 perf_event__process,
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300949 &top->session->machines.host);
Arnaldo Carvalho de Melo5b2bb752009-10-26 19:23:19 -0200950 else
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200951 perf_event__synthesize_threads(&top->tool, perf_event__process,
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300952 &top->session->machines.host);
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300953
954 ret = perf_top__start_counters(top);
955 if (ret)
956 goto out_delete;
957
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200958 top->session->evlist = top->evlist;
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -0300959 perf_session__set_id_hdr_size(top->session);
Ingo Molnar07800602009-04-20 15:00:56 +0200960
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -0300961 /*
962 * When perf is starting the traced process, all the events (apart from
963 * group members) have enable_on_exec=1 set, so don't spoil it by
964 * prematurely enabling them.
965 *
966 * XXX 'top' still doesn't start workloads like record, trace, but should,
967 * so leave the check here.
968 */
969 if (!perf_target__none(&opts->target))
970 perf_evlist__enable(top->evlist);
971
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200972 /* Wait for a minimal set of events before starting the snapshot */
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200973 poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200974
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200975 perf_top__mmap_read(top);
Frederic Weisbecker2f011902009-06-06 23:10:43 +0200976
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300977 ret = -1;
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -0200978 if (pthread_create(&thread, NULL, (use_browser > 0 ? display_thread_tui :
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200979 display_thread), top)) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900980 ui__error("Could not create display thread.\n");
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300981 goto out_delete;
Ingo Molnar07800602009-04-20 15:00:56 +0200982 }
983
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200984 if (top->realtime_prio) {
Ingo Molnar07800602009-04-20 15:00:56 +0200985 struct sched_param param;
986
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200987 param.sched_priority = top->realtime_prio;
Ingo Molnar07800602009-04-20 15:00:56 +0200988 if (sched_setscheduler(0, SCHED_FIFO, &param)) {
Namhyung Kim3780f482012-05-29 13:22:57 +0900989 ui__error("Could not set realtime priority.\n");
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300990 goto out_delete;
Ingo Molnar07800602009-04-20 15:00:56 +0200991 }
992 }
993
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -0300994 while (!done) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200995 u64 hits = top->samples;
Ingo Molnar07800602009-04-20 15:00:56 +0200996
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200997 perf_top__mmap_read(top);
Ingo Molnar07800602009-04-20 15:00:56 +0200998
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -0200999 if (hits == top->samples)
1000 ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
Ingo Molnar07800602009-04-20 15:00:56 +02001001 }
1002
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -03001003 ret = 0;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001004out_delete:
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001005 perf_session__delete(top->session);
1006 top->session = NULL;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001007
Arnaldo Carvalho de Melo11859e82013-01-30 13:25:53 -03001008 return ret;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001009}
1010
1011static int
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001012parse_callchain_opt(const struct option *opt, const char *arg, int unset)
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001013{
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001014 /*
1015 * --no-call-graph
1016 */
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001017 if (unset)
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001018 return 0;
Arnaldo Carvalho de Melo19d4ac32011-10-05 19:30:22 -03001019
1020 symbol_conf.use_callchain = true;
1021
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001022 return record_parse_callchain_opt(opt, arg, unset);
Ingo Molnar07800602009-04-20 15:00:56 +02001023}
Ingo Molnarb456bae2009-05-26 09:17:18 +02001024
Namhyung Kimfa5df942013-05-14 11:09:05 +09001025static int
1026parse_percent_limit(const struct option *opt, const char *arg,
1027 int unset __maybe_unused)
1028{
1029 struct perf_top *top = opt->value;
1030
1031 top->min_percent = strtof(arg, NULL);
1032 return 0;
1033}
1034
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001035int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001036{
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001037 int status;
1038 char errbuf[BUFSIZ];
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001039 struct perf_top top = {
1040 .count_filter = 5,
1041 .delay_secs = 2,
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001042 .record_opts = {
1043 .mmap_pages = UINT_MAX,
1044 .user_freq = UINT_MAX,
1045 .user_interval = ULLONG_MAX,
1046 .freq = 4000, /* 4 KHz */
1047 .target = {
1048 .uses_mmap = true,
1049 },
Namhyung Kimd1cb9fc2012-05-16 18:45:49 +09001050 },
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001051 .sym_pcnt_filter = 5,
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001052 };
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001053 struct perf_record_opts *opts = &top.record_opts;
1054 struct perf_target *target = &opts->target;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001055 const struct option options[] = {
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001056 OPT_CALLBACK('e', "event", &top.evlist, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001057 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001058 parse_events_option),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001059 OPT_U64('c', "count", &opts->user_interval, "event period to sample"),
1060 OPT_STRING('p', "pid", &target->pid, "pid",
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001061 "profile events on existing process id"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001062 OPT_STRING('t', "tid", &target->tid, "tid",
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001063 "profile events on existing thread id"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001064 OPT_BOOLEAN('a', "all-cpus", &target->system_wide,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001065 "system-wide collection from all CPUs"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001066 OPT_STRING('C', "cpu", &target->cpu_list, "cpu",
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001067 "list of cpus to monitor"),
Arnaldo Carvalho de Melob32d1332009-11-24 12:05:15 -02001068 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
1069 "file", "vmlinux pathname"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001070 OPT_BOOLEAN('K', "hide_kernel_symbols", &top.hide_kernel_symbols,
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001071 "hide kernel symbols"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001072 OPT_UINTEGER('m', "mmap-pages", &opts->mmap_pages,
1073 "number of mmap data pages"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001074 OPT_INTEGER('r', "realtime", &top.realtime_prio,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001075 "collect data with this RT SCHED_FIFO priority"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001076 OPT_INTEGER('d', "delay", &top.delay_secs,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001077 "number of seconds to delay between refreshes"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001078 OPT_BOOLEAN('D', "dump-symtab", &top.dump_symtab,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001079 "dump the symbol table used for profiling"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001080 OPT_INTEGER('f', "count-filter", &top.count_filter,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001081 "only display functions with more events than this"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001082 OPT_BOOLEAN('g', "group", &opts->group,
Ingo Molnarb456bae2009-05-26 09:17:18 +02001083 "put the counters into a counter group"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001084 OPT_BOOLEAN('i', "no-inherit", &opts->no_inherit,
1085 "child tasks do not inherit counters"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001086 OPT_STRING(0, "sym-annotate", &top.sym_filter, "symbol name",
Kirill Smelkov6cff0e82010-02-03 16:52:08 -02001087 "symbol to annotate"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001088 OPT_BOOLEAN('z', "zero", &top.zero, "zero history across updates"),
1089 OPT_UINTEGER('F', "freq", &opts->user_freq, "profile at this frequency"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001090 OPT_INTEGER('E', "entries", &top.print_entries,
Ingo Molnar6e53cdf2009-06-04 08:53:05 +02001091 "display this many functions"),
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001092 OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
Arnaldo Carvalho de Melo8ffcda12009-11-16 21:45:24 -02001093 "hide user symbols"),
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001094 OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"),
1095 OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"),
Ian Munsiec0555642010-04-13 18:37:33 +10001096 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar3da297a2009-06-07 17:39:02 +02001097 "be more verbose (show counter open errors, etc)"),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001098 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
Andi Kleen05484292013-01-24 16:10:29 +01001099 "sort by key(s): pid, comm, dso, symbol, parent, weight, local_weight"),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001100 OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
1101 "Show a column with the number of samples"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001102 OPT_CALLBACK_DEFAULT('G', "call-graph", &top.record_opts,
1103 "mode[,dump_size]", record_callchain_help,
1104 &parse_callchain_opt, "fp"),
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001105 OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
1106 "Show a column with the sum of periods"),
1107 OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
1108 "only consider symbols in these dsos"),
1109 OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
1110 "only consider symbols in these comms"),
1111 OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
1112 "only consider these symbols"),
Arnaldo Carvalho de Melo64c6f0c2011-10-06 12:48:31 -03001113 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
1114 "Interleave source code with assembly code (default)"),
1115 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
1116 "Display raw encoding of assembly instructions (default)"),
1117 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
1118 "Specify disassembler style (e.g. -M intel for intel syntax)"),
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001119 OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
Namhyung Kimfa5df942013-05-14 11:09:05 +09001120 OPT_CALLBACK(0, "percent-limit", &top, "percent",
1121 "Don't show entries under that percent", parse_percent_limit),
Ingo Molnarb456bae2009-05-26 09:17:18 +02001122 OPT_END()
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001123 };
Arnaldo Carvalho de Melobe772842012-10-01 15:20:58 -03001124 const char * const top_usage[] = {
1125 "perf top [<options>]",
1126 NULL
1127 };
Ingo Molnarb456bae2009-05-26 09:17:18 +02001128
Namhyung Kim334fe7a2013-03-11 16:43:12 +09001129 top.evlist = perf_evlist__new();
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001130 if (top.evlist == NULL)
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001131 return -ENOMEM;
1132
Ingo Molnarb456bae2009-05-26 09:17:18 +02001133 argc = parse_options(argc, argv, options, top_usage, 0);
1134 if (argc)
1135 usage_with_options(top_usage, options);
1136
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001137 if (sort_order == default_sort_order)
1138 sort_order = "dso,symbol";
1139
Namhyung Kim55309982013-02-06 14:57:16 +09001140 if (setup_sorting() < 0)
1141 usage_with_options(top_usage, options);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001142
Namhyung Kim3a5714f2013-05-14 11:09:01 +09001143 /* display thread wants entries to be collapsed in a different tree */
1144 sort__need_collapse = 1;
1145
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001146 if (top.use_stdio)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -02001147 use_browser = 0;
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001148 else if (top.use_tui)
Arnaldo Carvalho de Meloc0443df2011-01-31 18:19:33 -02001149 use_browser = 1;
1150
1151 setup_browser(false);
1152
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001153 status = perf_target__validate(target);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001154 if (status) {
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001155 perf_target__strerror(target, status, errbuf, BUFSIZ);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001156 ui__warning("%s", errbuf);
1157 }
Namhyung Kim4bd0f2d2012-04-26 14:15:18 +09001158
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001159 status = perf_target__parse_uid(target);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001160 if (status) {
1161 int saved_errno = errno;
1162
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001163 perf_target__strerror(target, status, errbuf, BUFSIZ);
Namhyung Kim3780f482012-05-29 13:22:57 +09001164 ui__error("%s", errbuf);
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001165
1166 status = -saved_errno;
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001167 goto out_delete_evlist;
Namhyung Kim16ad2ff2012-05-07 14:09:02 +09001168 }
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001169
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001170 if (perf_target__none(target))
1171 target->system_wide = true;
Arnaldo Carvalho de Melo10b47d52012-05-07 16:33:56 -03001172
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001173 if (perf_evlist__create_maps(top.evlist, target) < 0)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001174 usage_with_options(top_usage, options);
1175
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001176 if (!top.evlist->nr_entries &&
1177 perf_evlist__add_default(top.evlist) < 0) {
Namhyung Kim3780f482012-05-29 13:22:57 +09001178 ui__error("Not enough memory for event selector list\n");
Arnaldo Carvalho de Melo0de233b2013-01-30 14:01:20 -03001179 goto out_delete_maps;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001180 }
Arnaldo Carvalho de Melo5a8e5a32009-11-17 18:38:01 -02001181
Arnaldo Carvalho de Melod04b35f2011-11-11 22:17:32 -02001182 symbol_conf.nr_events = top.evlist->nr_entries;
1183
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001184 if (top.delay_secs < 1)
1185 top.delay_secs = 1;
Frederic Weisbecker2f335a02009-06-05 19:31:01 +02001186
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001187 if (opts->user_interval != ULLONG_MAX)
1188 opts->default_interval = opts->user_interval;
1189 if (opts->user_freq != UINT_MAX)
1190 opts->freq = opts->user_freq;
1191
Mike Galbraith7e4ff9e2009-10-12 07:56:03 +02001192 /*
1193 * User specified count overrides default frequency.
1194 */
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001195 if (opts->default_interval)
1196 opts->freq = 0;
1197 else if (opts->freq) {
1198 opts->default_interval = opts->freq;
Mike Galbraith7e4ff9e2009-10-12 07:56:03 +02001199 } else {
Namhyung Kim3780f482012-05-29 13:22:57 +09001200 ui__error("frequency and count are zero, aborting\n");
Arnaldo Carvalho de Melo2376c672012-12-11 16:48:41 -03001201 status = -EINVAL;
Arnaldo Carvalho de Melo0de233b2013-01-30 14:01:20 -03001202 goto out_delete_maps;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001203 }
1204
Arnaldo Carvalho de Melo0c21f732012-08-14 16:42:15 -03001205 top.sym_evsel = perf_evlist__first(top.evlist);
Arnaldo Carvalho de Melocc841582011-01-11 15:16:52 -02001206
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001207 symbol_conf.priv_size = sizeof(struct annotation);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001208
1209 symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
1210 if (symbol__init() < 0)
1211 return -1;
1212
Namhyung Kim08e71542013-04-03 21:26:19 +09001213 sort__setup_elide(stdout);
Arnaldo Carvalho de Meloab81f3f2011-10-05 19:16:15 -03001214
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001215 get_term_dimensions(&top.winsize);
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001216 if (top.print_entries == 0) {
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001217 struct sigaction act = {
1218 .sa_sigaction = perf_top__sig_winch,
1219 .sa_flags = SA_SIGINFO,
1220 };
1221 perf_top__update_print_entries(&top);
1222 sigaction(SIGWINCH, &act, NULL);
Arnaldo Carvalho de Melo3b6ed982009-11-16 19:30:27 -02001223 }
1224
Arnaldo Carvalho de Melo1758af12011-11-28 09:37:05 -02001225 status = __cmd_top(&top);
Arnaldo Carvalho de Melo806fb632011-11-29 08:05:52 -02001226
Arnaldo Carvalho de Melo0de233b2013-01-30 14:01:20 -03001227out_delete_maps:
1228 perf_evlist__delete_maps(top.evlist);
Arnaldo Carvalho de Melo0d37aa32012-01-19 14:08:15 -02001229out_delete_evlist:
Arnaldo Carvalho de Melo8c3e10e2011-01-31 14:50:39 -02001230 perf_evlist__delete(top.evlist);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001231
1232 return status;
Ingo Molnarb456bae2009-05-26 09:17:18 +02001233}