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Ingo Molnarddcacfa2009-04-20 15:37:32 +02001/*
Ingo Molnarbf9e1872009-06-02 23:37:05 +02002 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
Ingo Molnarddcacfa2009-04-20 15:37:32 +02008
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02009 $ perf stat ./hackbench 10
Ingo Molnarddcacfa2009-04-20 15:37:32 +020010
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020011 Time: 0.118
Ingo Molnarddcacfa2009-04-20 15:37:32 +020012
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020013 Performance counter stats for './hackbench 10':
Ingo Molnarddcacfa2009-04-20 15:37:32 +020014
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020015 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
Ingo Molnarddcacfa2009-04-20 15:37:32 +020028
Ingo Molnar52425192009-05-26 09:17:18 +020029 *
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020030 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
Ingo Molnar52425192009-05-26 09:17:18 +020031 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
Jaswinder Singh Rajput6e750a8f2009-06-27 03:02:07 +053039 * Jaswinder Singh Rajput <jaswinder@kernel.org>
Ingo Molnar52425192009-05-26 09:17:18 +020040 *
41 * Released under the GPL v2. (and only v2, not any later version)
Ingo Molnarddcacfa2009-04-20 15:37:32 +020042 */
43
Peter Zijlstra1a482f32009-05-23 18:28:58 +020044#include "perf.h"
Ingo Molnar16f762a2009-05-27 09:10:38 +020045#include "builtin.h"
Ingo Molnar148be2c2009-04-27 08:02:14 +020046#include "util/util.h"
Ingo Molnar52425192009-05-26 09:17:18 +020047#include "util/parse-options.h"
48#include "util/parse-events.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020049#include "util/event.h"
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020050#include "util/evlist.h"
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -020051#include "util/evsel.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020052#include "util/debug.h"
Ingo Molnara5d243d2011-04-27 05:39:24 +020053#include "util/color.h"
Liming Wang60666c62009-12-31 16:05:50 +080054#include "util/header.h"
Paul Mackerrasa12b51c2010-03-10 20:36:09 +110055#include "util/cpumap.h"
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030056#include "util/thread.h"
Arnaldo Carvalho de Melofd782602011-01-18 15:15:24 -020057#include "util/thread_map.h"
Ingo Molnarddcacfa2009-04-20 15:37:32 +020058
Ingo Molnarddcacfa2009-04-20 15:37:32 +020059#include <sys/prctl.h>
Ingo Molnar42202dd2009-06-13 14:57:28 +020060#include <math.h>
Stephane Eranian5af52b52010-05-18 15:00:01 +020061#include <locale.h>
Peter Zijlstra16c8a102009-05-05 17:50:27 +020062
Stephane Eraniand7470b62010-12-01 18:49:05 +020063#define DEFAULT_SEPARATOR " "
David Ahern2cee77c2011-05-30 08:55:59 -060064#define CNTR_NOT_SUPPORTED "<not supported>"
65#define CNTR_NOT_COUNTED "<not counted>"
Stephane Eraniand7470b62010-12-01 18:49:05 +020066
Ingo Molnarcdd6c482009-09-21 12:02:48 +020067static struct perf_event_attr default_attrs[] = {
Ingo Molnara21ca2c2009-06-06 09:58:57 +020068
Ingo Molnar56aab462009-10-19 13:27:08 +020069 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
70 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
71 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
72 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
Ingo Molnara21ca2c2009-06-06 09:58:57 +020073
Ingo Molnar56aab462009-10-19 13:27:08 +020074 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
Ingo Molnar129c04c2011-04-29 14:41:28 +020075 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
76 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
Ingo Molnar56aab462009-10-19 13:27:08 +020077 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
Ingo Molnar56aab462009-10-19 13:27:08 +020078 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
79 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
Peter Zijlstraf4dbfa82009-06-11 14:06:28 +020080
Ingo Molnara21ca2c2009-06-06 09:58:57 +020081};
82
Ingo Molnarc6264de2011-04-27 13:50:47 +020083/*
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020084 * Detailed stats (-d), covering the L1 and last level data caches:
Ingo Molnarc6264de2011-04-27 13:50:47 +020085 */
86static struct perf_event_attr detailed_attrs[] = {
87
Ingo Molnarc6264de2011-04-27 13:50:47 +020088 { .type = PERF_TYPE_HW_CACHE,
89 .config =
90 PERF_COUNT_HW_CACHE_L1D << 0 |
91 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
92 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
93
94 { .type = PERF_TYPE_HW_CACHE,
95 .config =
96 PERF_COUNT_HW_CACHE_L1D << 0 |
97 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
98 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
99
100 { .type = PERF_TYPE_HW_CACHE,
101 .config =
102 PERF_COUNT_HW_CACHE_LL << 0 |
103 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
104 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
105
106 { .type = PERF_TYPE_HW_CACHE,
107 .config =
108 PERF_COUNT_HW_CACHE_LL << 0 |
109 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
110 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
111};
112
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200113/*
114 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
115 */
116static struct perf_event_attr very_detailed_attrs[] = {
117
118 { .type = PERF_TYPE_HW_CACHE,
119 .config =
120 PERF_COUNT_HW_CACHE_L1I << 0 |
121 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
122 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
123
124 { .type = PERF_TYPE_HW_CACHE,
125 .config =
126 PERF_COUNT_HW_CACHE_L1I << 0 |
127 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
128 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
129
130 { .type = PERF_TYPE_HW_CACHE,
131 .config =
132 PERF_COUNT_HW_CACHE_DTLB << 0 |
133 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
134 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
135
136 { .type = PERF_TYPE_HW_CACHE,
137 .config =
138 PERF_COUNT_HW_CACHE_DTLB << 0 |
139 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
140 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
141
142 { .type = PERF_TYPE_HW_CACHE,
143 .config =
144 PERF_COUNT_HW_CACHE_ITLB << 0 |
145 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
146 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
147
148 { .type = PERF_TYPE_HW_CACHE,
149 .config =
150 PERF_COUNT_HW_CACHE_ITLB << 0 |
151 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
152 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
153
154};
155
156/*
157 * Very, very detailed stats (-d -d -d), adding prefetch events:
158 */
159static struct perf_event_attr very_very_detailed_attrs[] = {
160
161 { .type = PERF_TYPE_HW_CACHE,
162 .config =
163 PERF_COUNT_HW_CACHE_L1D << 0 |
164 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
165 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
166
167 { .type = PERF_TYPE_HW_CACHE,
168 .config =
169 PERF_COUNT_HW_CACHE_L1D << 0 |
170 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
171 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
172};
173
174
175
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200176struct perf_evlist *evsel_list;
177
Ian Munsiec0555642010-04-13 18:37:33 +1000178static bool system_wide = false;
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530179static int run_idx = 0;
180
181static int run_count = 1;
Stephane Eranian2e6cdf92010-05-12 10:40:01 +0200182static bool no_inherit = false;
Ian Munsiec0555642010-04-13 18:37:33 +1000183static bool scale = true;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200184static bool no_aggr = false;
Chris Wilson933da832009-10-04 01:35:01 +0100185static pid_t target_pid = -1;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300186static pid_t target_tid = -1;
Chris Wilson933da832009-10-04 01:35:01 +0100187static pid_t child_pid = -1;
Ian Munsiec0555642010-04-13 18:37:33 +1000188static bool null_run = false;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200189static int detailed_run = 0;
Ingo Molnarf9cef0a2011-04-28 18:17:11 +0200190static bool sync_run = false;
Arnaldo Carvalho de Melo201e0b02010-12-01 17:53:27 -0200191static bool big_num = true;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200192static int big_num_opt = -1;
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200193static const char *cpu_list;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200194static const char *csv_sep = NULL;
195static bool csv_output = false;
Lin Ming43bece72011-08-17 18:42:07 +0800196static bool group = false;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200197static const char *output_name = NULL;
198static FILE *output = NULL;
Jim Cromie56f3bae2011-09-07 17:14:00 -0600199static int output_fd;
Stephane Eranian5af52b52010-05-18 15:00:01 +0200200
Liming Wang60666c62009-12-31 16:05:50 +0800201static volatile int done = 0;
202
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200203struct stats
204{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200205 double n, mean, M2;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200206};
Ingo Molnar42202dd2009-06-13 14:57:28 +0200207
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200208struct perf_stat {
209 struct stats res_stats[3];
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200210};
211
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200212static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200213{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200214 evsel->priv = zalloc(sizeof(struct perf_stat));
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200215 return evsel->priv == NULL ? -ENOMEM : 0;
216}
217
218static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
219{
220 free(evsel->priv);
221 evsel->priv = NULL;
222}
223
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200224static void update_stats(struct stats *stats, u64 val)
225{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200226 double delta;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200227
Peter Zijlstra8a026312009-09-04 17:26:26 +0200228 stats->n++;
229 delta = val - stats->mean;
230 stats->mean += delta / stats->n;
231 stats->M2 += delta*(val - stats->mean);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200232}
233
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200234static double avg_stats(struct stats *stats)
235{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200236 return stats->mean;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200237}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200238
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200239/*
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200240 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
241 *
Peter Zijlstra8a026312009-09-04 17:26:26 +0200242 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
243 * s^2 = -------------------------------
244 * n - 1
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200245 *
246 * http://en.wikipedia.org/wiki/Stddev
247 *
248 * The std dev of the mean is related to the std dev by:
249 *
250 * s
251 * s_mean = -------
252 * sqrt(n)
253 *
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200254 */
255static double stddev_stats(struct stats *stats)
256{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200257 double variance = stats->M2 / (stats->n - 1);
258 double variance_mean = variance / stats->n;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200259
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200260 return sqrt(variance_mean);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200261}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200262
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200263struct stats runtime_nsecs_stats[MAX_NR_CPUS];
264struct stats runtime_cycles_stats[MAX_NR_CPUS];
Ingo Molnard3d1e862011-04-29 13:49:08 +0200265struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
266struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200267struct stats runtime_branches_stats[MAX_NR_CPUS];
Ingo Molnard58f4c82011-04-27 03:42:18 +0200268struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200269struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
Ingo Molnarc3305252011-05-19 14:01:42 +0200270struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
271struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
272struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
273struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200274struct stats walltime_nsecs_stats;
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200275
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200276static int create_perf_stat_counter(struct perf_evsel *evsel)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200277{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200278 struct perf_event_attr *attr = &evsel->attr;
Peter Zijlstra16c8a102009-05-05 17:50:27 +0200279
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200280 if (scale)
Ingo Molnara21ca2c2009-06-06 09:58:57 +0200281 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
282 PERF_FORMAT_TOTAL_TIME_RUNNING;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200283
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200284 attr->inherit = !no_inherit;
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300285
286 if (system_wide)
Lin Ming43bece72011-08-17 18:42:07 +0800287 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group);
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300288
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200289 if (target_pid == -1 && target_tid == -1) {
290 attr->disabled = 1;
291 attr->enable_on_exec = 1;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200292 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300293
Lin Ming43bece72011-08-17 18:42:07 +0800294 return perf_evsel__open_per_thread(evsel, evsel_list->threads, group);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200295}
296
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200297/*
298 * Does the counter have nsecs as a unit?
299 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200300static inline int nsec_counter(struct perf_evsel *evsel)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200301{
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200302 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
303 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200304 return 1;
305
306 return 0;
307}
308
309/*
Ingo Molnardcd99362011-04-27 04:36:37 +0200310 * Update various tracking values we maintain to print
311 * more semantic information such as miss/hit ratios,
312 * instruction rates, etc:
313 */
314static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
315{
316 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
317 update_stats(&runtime_nsecs_stats[0], count[0]);
318 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
319 update_stats(&runtime_cycles_stats[0], count[0]);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200320 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
321 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200322 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
Ingo Molnard3d1e862011-04-29 13:49:08 +0200323 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200324 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
325 update_stats(&runtime_branches_stats[0], count[0]);
326 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
327 update_stats(&runtime_cacherefs_stats[0], count[0]);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200328 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
329 update_stats(&runtime_l1_dcache_stats[0], count[0]);
Ingo Molnarc3305252011-05-19 14:01:42 +0200330 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
331 update_stats(&runtime_l1_icache_stats[0], count[0]);
332 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
333 update_stats(&runtime_ll_cache_stats[0], count[0]);
334 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
335 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
336 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
337 update_stats(&runtime_itlb_cache_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200338}
339
340/*
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200341 * Read out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200342 * aggregate counts across CPUs in system-wide mode
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200343 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200344static int read_counter_aggr(struct perf_evsel *counter)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200345{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200346 struct perf_stat *ps = counter->priv;
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200347 u64 *count = counter->counts->aggr.values;
348 int i;
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200349
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200350 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
351 evsel_list->threads->nr, scale) < 0)
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200352 return -1;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200353
354 for (i = 0; i < 3; i++)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200355 update_stats(&ps->res_stats[i], count[i]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200356
357 if (verbose) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200358 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200359 event_name(counter), count[0], count[1], count[2]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200360 }
361
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200362 /*
363 * Save the full runtime - to allow normalization during printout:
364 */
Ingo Molnardcd99362011-04-27 04:36:37 +0200365 update_shadow_stats(counter, count);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200366
367 return 0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200368}
369
370/*
371 * Read out the results of a single counter:
372 * do not aggregate counts across CPUs in system-wide mode
373 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200374static int read_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200375{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200376 u64 *count;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200377 int cpu;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200378
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200379 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200380 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
381 return -1;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200382
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200383 count = counter->counts->cpu[cpu].values;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200384
Ingo Molnardcd99362011-04-27 04:36:37 +0200385 update_shadow_stats(counter, count);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200386 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200387
388 return 0;
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200389}
390
Ingo Molnarf37a2912009-07-01 12:37:06 +0200391static int run_perf_stat(int argc __used, const char **argv)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200392{
393 unsigned long long t0, t1;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200394 struct perf_evsel *counter;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200395 int status = 0;
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000396 int child_ready_pipe[2], go_pipe[2];
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300397 const bool forks = (argc > 0);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000398 char buf;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200399
Liming Wang60666c62009-12-31 16:05:50 +0800400 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000401 perror("failed to create pipes");
402 exit(1);
403 }
404
Liming Wang60666c62009-12-31 16:05:50 +0800405 if (forks) {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300406 if ((child_pid = fork()) < 0)
Liming Wang60666c62009-12-31 16:05:50 +0800407 perror("failed to fork");
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000408
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300409 if (!child_pid) {
Liming Wang60666c62009-12-31 16:05:50 +0800410 close(child_ready_pipe[0]);
411 close(go_pipe[1]);
412 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
413
414 /*
415 * Do a dummy execvp to get the PLT entry resolved,
416 * so we avoid the resolver overhead on the real
417 * execvp call.
418 */
419 execvp("", (char **)argv);
420
421 /*
422 * Tell the parent we're ready to go
423 */
424 close(child_ready_pipe[1]);
425
426 /*
427 * Wait until the parent tells us to go.
428 */
429 if (read(go_pipe[0], &buf, 1) == -1)
430 perror("unable to read pipe");
431
432 execvp(argv[0], (char **)argv);
433
434 perror(argv[0]);
435 exit(-1);
436 }
437
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300438 if (target_tid == -1 && target_pid == -1 && !system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200439 evsel_list->threads->map[0] = child_pid;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300440
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000441 /*
Liming Wang60666c62009-12-31 16:05:50 +0800442 * Wait for the child to be ready to exec.
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000443 */
444 close(child_ready_pipe[1]);
Liming Wang60666c62009-12-31 16:05:50 +0800445 close(go_pipe[0]);
446 if (read(child_ready_pipe[0], &buf, 1) == -1)
Frederic Weisbeckera92bef02009-07-01 21:02:10 +0200447 perror("unable to read pipe");
Liming Wang60666c62009-12-31 16:05:50 +0800448 close(child_ready_pipe[0]);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000449 }
450
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200451 list_for_each_entry(counter, &evsel_list->entries, node) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200452 if (create_perf_stat_counter(counter) < 0) {
David Ahernc63ca0c2011-04-29 16:04:15 -0600453 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) {
454 if (verbose)
455 ui__warning("%s event is not supported by the kernel.\n",
456 event_name(counter));
David Ahern2cee77c2011-05-30 08:55:59 -0600457 counter->supported = false;
Ingo Molnarede70292011-04-28 08:48:42 +0200458 continue;
David Ahernc63ca0c2011-04-29 16:04:15 -0600459 }
Ingo Molnarede70292011-04-28 08:48:42 +0200460
461 if (errno == EPERM || errno == EACCES) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200462 error("You may not have permission to collect %sstats.\n"
463 "\t Consider tweaking"
464 " /proc/sys/kernel/perf_event_paranoid or running as root.",
465 system_wide ? "system-wide " : "");
466 } else {
467 error("open_counter returned with %d (%s). "
468 "/bin/dmesg may provide additional information.\n",
469 errno, strerror(errno));
470 }
471 if (child_pid != -1)
472 kill(child_pid, SIGTERM);
473 die("Not all events could be opened.\n");
474 return -1;
475 }
David Ahern2cee77c2011-05-30 08:55:59 -0600476 counter->supported = true;
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300477 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200478
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100479 if (perf_evlist__set_filters(evsel_list)) {
480 error("failed to set filter with %d (%s)\n", errno,
481 strerror(errno));
482 return -1;
483 }
484
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200485 /*
486 * Enable counters and exec the command:
487 */
488 t0 = rdclock();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200489
Liming Wang60666c62009-12-31 16:05:50 +0800490 if (forks) {
491 close(go_pipe[1]);
492 wait(&status);
493 } else {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300494 while(!done) sleep(1);
Liming Wang60666c62009-12-31 16:05:50 +0800495 }
Ingo Molnar44db76c2009-06-03 19:36:07 +0200496
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200497 t1 = rdclock();
498
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200499 update_stats(&walltime_nsecs_stats, t1 - t0);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200500
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200501 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200502 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200503 read_counter(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200504 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200505 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200506 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200507 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200508 read_counter_aggr(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200509 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
510 evsel_list->threads->nr);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200511 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200512 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200513
Ingo Molnar42202dd2009-06-13 14:57:28 +0200514 return WEXITSTATUS(status);
515}
516
Ingo Molnarf99844c2011-04-27 05:35:39 +0200517static void print_noise_pct(double total, double avg)
518{
519 double pct = 0.0;
520
521 if (avg)
522 pct = 100.0*total/avg;
523
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700524 if (csv_output)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200525 fprintf(output, "%s%.2f%%", csv_sep, pct);
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700526 else
Stephane Eranian4aa90152011-08-15 22:22:33 +0200527 fprintf(output, " ( +-%6.2f%% )", pct);
Ingo Molnarf99844c2011-04-27 05:35:39 +0200528}
529
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200530static void print_noise(struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200531{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200532 struct perf_stat *ps;
533
Peter Zijlstra849abde2009-09-04 18:23:38 +0200534 if (run_count == 1)
535 return;
536
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200537 ps = evsel->priv;
Ingo Molnarf99844c2011-04-27 05:35:39 +0200538 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200539}
540
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200541static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200542{
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200543 double msecs = avg / 1e6;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200544 char cpustr[16] = { '\0', };
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200545 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
Ingo Molnar42202dd2009-06-13 14:57:28 +0200546
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200547 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200548 sprintf(cpustr, "CPU%*d%s",
549 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200550 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200551
Stephane Eranian4aa90152011-08-15 22:22:33 +0200552 fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200553
Stephane Eranian023695d2011-02-14 11:20:01 +0200554 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200555 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200556
Stephane Eraniand7470b62010-12-01 18:49:05 +0200557 if (csv_output)
558 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200559
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200560 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Stephane Eranian4aa90152011-08-15 22:22:33 +0200561 fprintf(output, " # %8.3f CPUs utilized ",
562 avg / avg_stats(&walltime_nsecs_stats));
Ingo Molnar42202dd2009-06-13 14:57:28 +0200563}
564
Ingo Molnard3d1e862011-04-29 13:49:08 +0200565static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
566{
567 double total, ratio = 0.0;
568 const char *color;
569
570 total = avg_stats(&runtime_cycles_stats[cpu]);
571
572 if (total)
573 ratio = avg / total * 100.0;
574
575 color = PERF_COLOR_NORMAL;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200576 if (ratio > 50.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200577 color = PERF_COLOR_RED;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200578 else if (ratio > 30.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200579 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200580 else if (ratio > 10.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200581 color = PERF_COLOR_YELLOW;
582
Stephane Eranian4aa90152011-08-15 22:22:33 +0200583 fprintf(output, " # ");
584 color_fprintf(output, color, "%6.2f%%", ratio);
585 fprintf(output, " frontend cycles idle ");
Ingo Molnard3d1e862011-04-29 13:49:08 +0200586}
587
588static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200589{
590 double total, ratio = 0.0;
591 const char *color;
592
593 total = avg_stats(&runtime_cycles_stats[cpu]);
594
595 if (total)
596 ratio = avg / total * 100.0;
597
598 color = PERF_COLOR_NORMAL;
599 if (ratio > 75.0)
600 color = PERF_COLOR_RED;
601 else if (ratio > 50.0)
602 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200603 else if (ratio > 20.0)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200604 color = PERF_COLOR_YELLOW;
605
Stephane Eranian4aa90152011-08-15 22:22:33 +0200606 fprintf(output, " # ");
607 color_fprintf(output, color, "%6.2f%%", ratio);
608 fprintf(output, " backend cycles idle ");
Ingo Molnara5d243d2011-04-27 05:39:24 +0200609}
610
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200611static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
612{
613 double total, ratio = 0.0;
614 const char *color;
615
616 total = avg_stats(&runtime_branches_stats[cpu]);
617
618 if (total)
619 ratio = avg / total * 100.0;
620
621 color = PERF_COLOR_NORMAL;
622 if (ratio > 20.0)
623 color = PERF_COLOR_RED;
624 else if (ratio > 10.0)
625 color = PERF_COLOR_MAGENTA;
626 else if (ratio > 5.0)
627 color = PERF_COLOR_YELLOW;
628
Stephane Eranian4aa90152011-08-15 22:22:33 +0200629 fprintf(output, " # ");
630 color_fprintf(output, color, "%6.2f%%", ratio);
631 fprintf(output, " of all branches ");
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200632}
633
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200634static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
635{
636 double total, ratio = 0.0;
637 const char *color;
638
639 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
640
641 if (total)
642 ratio = avg / total * 100.0;
643
644 color = PERF_COLOR_NORMAL;
645 if (ratio > 20.0)
646 color = PERF_COLOR_RED;
647 else if (ratio > 10.0)
648 color = PERF_COLOR_MAGENTA;
649 else if (ratio > 5.0)
650 color = PERF_COLOR_YELLOW;
651
Stephane Eranian4aa90152011-08-15 22:22:33 +0200652 fprintf(output, " # ");
653 color_fprintf(output, color, "%6.2f%%", ratio);
654 fprintf(output, " of all L1-dcache hits ");
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200655}
656
Ingo Molnarc3305252011-05-19 14:01:42 +0200657static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
658{
659 double total, ratio = 0.0;
660 const char *color;
661
662 total = avg_stats(&runtime_l1_icache_stats[cpu]);
663
664 if (total)
665 ratio = avg / total * 100.0;
666
667 color = PERF_COLOR_NORMAL;
668 if (ratio > 20.0)
669 color = PERF_COLOR_RED;
670 else if (ratio > 10.0)
671 color = PERF_COLOR_MAGENTA;
672 else if (ratio > 5.0)
673 color = PERF_COLOR_YELLOW;
674
Stephane Eranian4aa90152011-08-15 22:22:33 +0200675 fprintf(output, " # ");
676 color_fprintf(output, color, "%6.2f%%", ratio);
677 fprintf(output, " of all L1-icache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200678}
679
680static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
681{
682 double total, ratio = 0.0;
683 const char *color;
684
685 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
686
687 if (total)
688 ratio = avg / total * 100.0;
689
690 color = PERF_COLOR_NORMAL;
691 if (ratio > 20.0)
692 color = PERF_COLOR_RED;
693 else if (ratio > 10.0)
694 color = PERF_COLOR_MAGENTA;
695 else if (ratio > 5.0)
696 color = PERF_COLOR_YELLOW;
697
Stephane Eranian4aa90152011-08-15 22:22:33 +0200698 fprintf(output, " # ");
699 color_fprintf(output, color, "%6.2f%%", ratio);
700 fprintf(output, " of all dTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200701}
702
703static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
704{
705 double total, ratio = 0.0;
706 const char *color;
707
708 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
709
710 if (total)
711 ratio = avg / total * 100.0;
712
713 color = PERF_COLOR_NORMAL;
714 if (ratio > 20.0)
715 color = PERF_COLOR_RED;
716 else if (ratio > 10.0)
717 color = PERF_COLOR_MAGENTA;
718 else if (ratio > 5.0)
719 color = PERF_COLOR_YELLOW;
720
Stephane Eranian4aa90152011-08-15 22:22:33 +0200721 fprintf(output, " # ");
722 color_fprintf(output, color, "%6.2f%%", ratio);
723 fprintf(output, " of all iTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200724}
725
726static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
727{
728 double total, ratio = 0.0;
729 const char *color;
730
731 total = avg_stats(&runtime_ll_cache_stats[cpu]);
732
733 if (total)
734 ratio = avg / total * 100.0;
735
736 color = PERF_COLOR_NORMAL;
737 if (ratio > 20.0)
738 color = PERF_COLOR_RED;
739 else if (ratio > 10.0)
740 color = PERF_COLOR_MAGENTA;
741 else if (ratio > 5.0)
742 color = PERF_COLOR_YELLOW;
743
Stephane Eranian4aa90152011-08-15 22:22:33 +0200744 fprintf(output, " # ");
745 color_fprintf(output, color, "%6.2f%%", ratio);
746 fprintf(output, " of all LL-cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200747}
748
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200749static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200750{
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200751 double total, ratio = 0.0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200752 char cpustr[16] = { '\0', };
Stephane Eraniand7470b62010-12-01 18:49:05 +0200753 const char *fmt;
754
755 if (csv_output)
756 fmt = "%s%.0f%s%s";
757 else if (big_num)
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200758 fmt = "%s%'18.0f%s%-25s";
Stephane Eraniand7470b62010-12-01 18:49:05 +0200759 else
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200760 fmt = "%s%18.0f%s%-25s";
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200761
762 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200763 sprintf(cpustr, "CPU%*d%s",
764 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200765 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200766 else
767 cpu = 0;
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200768
Stephane Eranian4aa90152011-08-15 22:22:33 +0200769 fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200770
Stephane Eranian023695d2011-02-14 11:20:01 +0200771 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200772 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200773
Stephane Eraniand7470b62010-12-01 18:49:05 +0200774 if (csv_output)
775 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200776
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200777 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200778 total = avg_stats(&runtime_cycles_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200779
780 if (total)
781 ratio = avg / total;
782
Stephane Eranian4aa90152011-08-15 22:22:33 +0200783 fprintf(output, " # %5.2f insns per cycle ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200784
Ingo Molnard3d1e862011-04-29 13:49:08 +0200785 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
786 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
Ingo Molnar481f9882011-04-27 04:34:16 +0200787
788 if (total && avg) {
789 ratio = total / avg;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200790 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200791 }
792
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200793 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200794 runtime_branches_stats[cpu].n != 0) {
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200795 print_branch_misses(cpu, evsel, avg);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200796 } else if (
797 evsel->attr.type == PERF_TYPE_HW_CACHE &&
798 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
799 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
800 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
Ingo Molnarc6264de2011-04-27 13:50:47 +0200801 runtime_l1_dcache_stats[cpu].n != 0) {
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200802 print_l1_dcache_misses(cpu, evsel, avg);
Ingo Molnarc3305252011-05-19 14:01:42 +0200803 } else if (
804 evsel->attr.type == PERF_TYPE_HW_CACHE &&
805 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
806 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
807 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
808 runtime_l1_icache_stats[cpu].n != 0) {
809 print_l1_icache_misses(cpu, evsel, avg);
810 } else if (
811 evsel->attr.type == PERF_TYPE_HW_CACHE &&
812 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
813 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
814 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
815 runtime_dtlb_cache_stats[cpu].n != 0) {
816 print_dtlb_cache_misses(cpu, evsel, avg);
817 } else if (
818 evsel->attr.type == PERF_TYPE_HW_CACHE &&
819 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
820 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
821 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
822 runtime_itlb_cache_stats[cpu].n != 0) {
823 print_itlb_cache_misses(cpu, evsel, avg);
824 } else if (
825 evsel->attr.type == PERF_TYPE_HW_CACHE &&
826 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
827 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
828 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
829 runtime_ll_cache_stats[cpu].n != 0) {
830 print_ll_cache_misses(cpu, evsel, avg);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200831 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
832 runtime_cacherefs_stats[cpu].n != 0) {
833 total = avg_stats(&runtime_cacherefs_stats[cpu]);
834
835 if (total)
836 ratio = avg * 100 / total;
837
Stephane Eranian4aa90152011-08-15 22:22:33 +0200838 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200839
Ingo Molnard3d1e862011-04-29 13:49:08 +0200840 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
841 print_stalled_cycles_frontend(cpu, evsel, avg);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200842 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
Ingo Molnard3d1e862011-04-29 13:49:08 +0200843 print_stalled_cycles_backend(cpu, evsel, avg);
Ingo Molnar481f9882011-04-27 04:34:16 +0200844 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
845 total = avg_stats(&runtime_nsecs_stats[cpu]);
846
847 if (total)
848 ratio = 1.0 * avg / total;
849
Stephane Eranian4aa90152011-08-15 22:22:33 +0200850 fprintf(output, " # %8.3f GHz ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200851 } else if (runtime_nsecs_stats[cpu].n != 0) {
852 total = avg_stats(&runtime_nsecs_stats[cpu]);
853
854 if (total)
855 ratio = 1000.0 * avg / total;
856
Stephane Eranian4aa90152011-08-15 22:22:33 +0200857 fprintf(output, " # %8.3f M/sec ", ratio);
Ingo Molnara5d243d2011-04-27 05:39:24 +0200858 } else {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200859 fprintf(output, " ");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200860 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200861}
862
863/*
864 * Print out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200865 * aggregated counts in system-wide mode
Ingo Molnar42202dd2009-06-13 14:57:28 +0200866 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200867static void print_counter_aggr(struct perf_evsel *counter)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200868{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200869 struct perf_stat *ps = counter->priv;
870 double avg = avg_stats(&ps->res_stats[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200871 int scaled = counter->counts->scaled;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200872
Ingo Molnar42202dd2009-06-13 14:57:28 +0200873 if (scaled == -1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200874 fprintf(output, "%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200875 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600876 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
Stephane Eranian023695d2011-02-14 11:20:01 +0200877 csv_sep,
878 csv_output ? 0 : -24,
879 event_name(counter));
880
881 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200882 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200883
Stephane Eranian4aa90152011-08-15 22:22:33 +0200884 fputc('\n', output);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200885 return;
886 }
887
888 if (nsec_counter(counter))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200889 nsec_printout(-1, counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200890 else
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200891 abs_printout(-1, counter, avg);
Peter Zijlstra849abde2009-09-04 18:23:38 +0200892
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700893 print_noise(counter, avg);
894
Stephane Eraniand7470b62010-12-01 18:49:05 +0200895 if (csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200896 fputc('\n', output);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200897 return;
898 }
899
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200900 if (scaled) {
901 double avg_enabled, avg_running;
902
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200903 avg_enabled = avg_stats(&ps->res_stats[1]);
904 avg_running = avg_stats(&ps->res_stats[2]);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200905
Stephane Eranian4aa90152011-08-15 22:22:33 +0200906 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200907 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200908 fprintf(output, "\n");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200909}
910
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200911/*
912 * Print out the results of a single counter:
913 * does not use aggregated count in system-wide
914 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200915static void print_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200916{
917 u64 ena, run, val;
918 int cpu;
919
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200920 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200921 val = counter->counts->cpu[cpu].val;
922 ena = counter->counts->cpu[cpu].ena;
923 run = counter->counts->cpu[cpu].run;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200924 if (run == 0 || ena == 0) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200925 fprintf(output, "CPU%*d%s%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200926 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200927 evsel_list->cpus->map[cpu], csv_sep,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200928 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600929 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
930 csv_sep,
Stephane Eranian023695d2011-02-14 11:20:01 +0200931 csv_output ? 0 : -24,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200932 event_name(counter));
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200933
Stephane Eranian023695d2011-02-14 11:20:01 +0200934 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200935 fprintf(output, "%s%s",
936 csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200937
Stephane Eranian4aa90152011-08-15 22:22:33 +0200938 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200939 continue;
940 }
941
942 if (nsec_counter(counter))
943 nsec_printout(cpu, counter, val);
944 else
945 abs_printout(cpu, counter, val);
946
Stephane Eraniand7470b62010-12-01 18:49:05 +0200947 if (!csv_output) {
948 print_noise(counter, 1.0);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200949
Ingo Molnarc6264de2011-04-27 13:50:47 +0200950 if (run != ena)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200951 fprintf(output, " (%.2f%%)",
952 100.0 * run / ena);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200953 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200954 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200955 }
956}
957
Ingo Molnar42202dd2009-06-13 14:57:28 +0200958static void print_stat(int argc, const char **argv)
959{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200960 struct perf_evsel *counter;
961 int i;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200962
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200963 fflush(stdout);
964
Stephane Eraniand7470b62010-12-01 18:49:05 +0200965 if (!csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200966 fprintf(output, "\n");
967 fprintf(output, " Performance counter stats for ");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200968 if(target_pid == -1 && target_tid == -1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200969 fprintf(output, "\'%s", argv[0]);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200970 for (i = 1; i < argc; i++)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200971 fprintf(output, " %s", argv[i]);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200972 } else if (target_pid != -1)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200973 fprintf(output, "process id \'%d", target_pid);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200974 else
Stephane Eranian4aa90152011-08-15 22:22:33 +0200975 fprintf(output, "thread id \'%d", target_tid);
Ingo Molnar44db76c2009-06-03 19:36:07 +0200976
Stephane Eranian4aa90152011-08-15 22:22:33 +0200977 fprintf(output, "\'");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200978 if (run_count > 1)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200979 fprintf(output, " (%d runs)", run_count);
980 fprintf(output, ":\n\n");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200981 }
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200982
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200983 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200984 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200985 print_counter(counter);
986 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200987 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200988 print_counter_aggr(counter);
989 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200990
Stephane Eraniand7470b62010-12-01 18:49:05 +0200991 if (!csv_output) {
Ingo Molnarc3305252011-05-19 14:01:42 +0200992 if (!null_run)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200993 fprintf(output, "\n");
994 fprintf(output, " %17.9f seconds time elapsed",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200995 avg_stats(&walltime_nsecs_stats)/1e9);
996 if (run_count > 1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200997 fprintf(output, " ");
Ingo Molnarf99844c2011-04-27 05:35:39 +0200998 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
999 avg_stats(&walltime_nsecs_stats));
Stephane Eraniand7470b62010-12-01 18:49:05 +02001000 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001001 fprintf(output, "\n\n");
Ingo Molnar566747e2009-06-27 06:24:32 +02001002 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001003}
1004
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001005static volatile int signr = -1;
1006
Ingo Molnar52425192009-05-26 09:17:18 +02001007static void skip_signal(int signo)
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001008{
Zhang, Yanmin6be28502010-03-18 11:36:03 -03001009 if(child_pid == -1)
Liming Wang60666c62009-12-31 16:05:50 +08001010 done = 1;
1011
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001012 signr = signo;
1013}
1014
1015static void sig_atexit(void)
1016{
Chris Wilson933da832009-10-04 01:35:01 +01001017 if (child_pid != -1)
1018 kill(child_pid, SIGTERM);
1019
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001020 if (signr == -1)
1021 return;
1022
1023 signal(signr, SIG_DFL);
1024 kill(getpid(), signr);
Ingo Molnar52425192009-05-26 09:17:18 +02001025}
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001026
Ingo Molnar52425192009-05-26 09:17:18 +02001027static const char * const stat_usage[] = {
Liming Wang60666c62009-12-31 16:05:50 +08001028 "perf stat [<options>] [<command>]",
Ingo Molnar52425192009-05-26 09:17:18 +02001029 NULL
1030};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001031
Stephane Eraniand7470b62010-12-01 18:49:05 +02001032static int stat__set_big_num(const struct option *opt __used,
1033 const char *s __used, int unset)
1034{
1035 big_num_opt = unset ? 0 : 1;
1036 return 0;
1037}
1038
Stephane Eranian4aa90152011-08-15 22:22:33 +02001039static bool append_file;
1040
Ingo Molnar52425192009-05-26 09:17:18 +02001041static const struct option options[] = {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001042 OPT_CALLBACK('e', "event", &evsel_list, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001043 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001044 parse_events_option),
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +01001045 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1046 "event filter", parse_filter),
Stephane Eranian2e6cdf92010-05-12 10:40:01 +02001047 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1048 "child tasks do not inherit counters"),
Ingo Molnar52425192009-05-26 09:17:18 +02001049 OPT_INTEGER('p', "pid", &target_pid,
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001050 "stat events on existing process id"),
1051 OPT_INTEGER('t', "tid", &target_tid,
1052 "stat events on existing thread id"),
Ingo Molnar52425192009-05-26 09:17:18 +02001053 OPT_BOOLEAN('a', "all-cpus", &system_wide,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301054 "system-wide collection from all CPUs"),
Lin Ming43bece72011-08-17 18:42:07 +08001055 OPT_BOOLEAN('g', "group", &group,
1056 "put the counters into a counter group"),
Brice Goglinb26bc5a2009-08-07 10:18:39 +02001057 OPT_BOOLEAN('c', "scale", &scale,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301058 "scale/normalize counters"),
Ian Munsiec0555642010-04-13 18:37:33 +10001059 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar743ee1f2009-06-07 17:06:46 +02001060 "be more verbose (show counter open errors, etc)"),
Ingo Molnar42202dd2009-06-13 14:57:28 +02001061 OPT_INTEGER('r', "repeat", &run_count,
1062 "repeat command and print average + stddev (max: 100)"),
Ingo Molnar0cfb7a12009-06-27 06:10:30 +02001063 OPT_BOOLEAN('n', "null", &null_run,
1064 "null run - dont start any counters"),
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001065 OPT_INCR('d', "detailed", &detailed_run,
Ingo Molnarc6264de2011-04-27 13:50:47 +02001066 "detailed run - start a lot of events"),
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001067 OPT_BOOLEAN('S', "sync", &sync_run,
1068 "call sync() before starting a run"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001069 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1070 "print large numbers with thousands\' separators",
1071 stat__set_big_num),
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001072 OPT_STRING('C', "cpu", &cpu_list, "cpu",
1073 "list of cpus to monitor in system-wide"),
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001074 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
1075 "disable CPU count aggregation"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001076 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1077 "print counts with custom separator"),
Stephane Eranian023695d2011-02-14 11:20:01 +02001078 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1079 "monitor event in cgroup name only",
1080 parse_cgroups),
Stephane Eranian4aa90152011-08-15 22:22:33 +02001081 OPT_STRING('o', "output", &output_name, "file",
1082 "output file name"),
1083 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
Jim Cromie56f3bae2011-09-07 17:14:00 -06001084 OPT_INTEGER(0, "log-fd", &output_fd,
1085 "log output to fd, instead of stderr"),
Ingo Molnar52425192009-05-26 09:17:18 +02001086 OPT_END()
1087};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001088
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001089/*
1090 * Add default attributes, if there were no attributes specified or
1091 * if -d/--detailed, -d -d or -d -d -d is used:
1092 */
1093static int add_default_attributes(void)
1094{
1095 struct perf_evsel *pos;
1096 size_t attr_nr = 0;
1097 size_t c;
1098
1099 /* Set attrs if no event is selected and !null_run: */
1100 if (null_run)
1101 return 0;
1102
1103 if (!evsel_list->nr_entries) {
1104 for (c = 0; c < ARRAY_SIZE(default_attrs); c++) {
1105 pos = perf_evsel__new(default_attrs + c, c + attr_nr);
1106 if (pos == NULL)
1107 return -1;
1108 perf_evlist__add(evsel_list, pos);
1109 }
1110 attr_nr += c;
1111 }
1112
1113 /* Detailed events get appended to the event list: */
1114
1115 if (detailed_run < 1)
1116 return 0;
1117
1118 /* Append detailed run extra attributes: */
1119 for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) {
1120 pos = perf_evsel__new(detailed_attrs + c, c + attr_nr);
1121 if (pos == NULL)
1122 return -1;
1123 perf_evlist__add(evsel_list, pos);
1124 }
1125 attr_nr += c;
1126
1127 if (detailed_run < 2)
1128 return 0;
1129
1130 /* Append very detailed run extra attributes: */
1131 for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) {
1132 pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr);
1133 if (pos == NULL)
1134 return -1;
1135 perf_evlist__add(evsel_list, pos);
1136 }
1137
1138 if (detailed_run < 3)
1139 return 0;
1140
1141 /* Append very, very detailed run extra attributes: */
1142 for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) {
1143 pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr);
1144 if (pos == NULL)
1145 return -1;
1146 perf_evlist__add(evsel_list, pos);
1147 }
1148
1149
1150 return 0;
1151}
1152
Ingo Molnarf37a2912009-07-01 12:37:06 +02001153int cmd_stat(int argc, const char **argv, const char *prefix __used)
Ingo Molnar52425192009-05-26 09:17:18 +02001154{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001155 struct perf_evsel *pos;
1156 int status = -ENOMEM;
Stephane Eranian4aa90152011-08-15 22:22:33 +02001157 const char *mode;
Ingo Molnar42202dd2009-06-13 14:57:28 +02001158
Stephane Eranian5af52b52010-05-18 15:00:01 +02001159 setlocale(LC_ALL, "");
1160
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001161 evsel_list = perf_evlist__new(NULL, NULL);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001162 if (evsel_list == NULL)
1163 return -ENOMEM;
1164
Anton Blancharda0541232009-07-22 23:04:12 +10001165 argc = parse_options(argc, argv, options, stat_usage,
1166 PARSE_OPT_STOP_AT_NON_OPTION);
Stephane Eraniand7470b62010-12-01 18:49:05 +02001167
Stephane Eranian4aa90152011-08-15 22:22:33 +02001168 output = stderr;
1169 if (output_name && strcmp(output_name, "-"))
1170 output = NULL;
1171
Jim Cromie56f3bae2011-09-07 17:14:00 -06001172 if (output_name && output_fd) {
1173 fprintf(stderr, "cannot use both --output and --log-fd\n");
1174 usage_with_options(stat_usage, options);
1175 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001176 if (!output) {
1177 struct timespec tm;
1178 mode = append_file ? "a" : "w";
1179
1180 output = fopen(output_name, mode);
1181 if (!output) {
1182 perror("failed to create output file");
1183 exit(-1);
1184 }
1185 clock_gettime(CLOCK_REALTIME, &tm);
1186 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
Jim Cromie56f3bae2011-09-07 17:14:00 -06001187 } else if (output_fd != 2) {
1188 mode = append_file ? "a" : "w";
1189 output = fdopen(output_fd, mode);
1190 if (!output) {
1191 perror("Failed opening logfd");
1192 return -errno;
1193 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001194 }
1195
Stephane Eraniand7470b62010-12-01 18:49:05 +02001196 if (csv_sep)
1197 csv_output = true;
1198 else
1199 csv_sep = DEFAULT_SEPARATOR;
1200
1201 /*
1202 * let the spreadsheet do the pretty-printing
1203 */
1204 if (csv_output) {
1205 /* User explicitely passed -B? */
1206 if (big_num_opt == 1) {
1207 fprintf(stderr, "-B option not supported with -x\n");
1208 usage_with_options(stat_usage, options);
1209 } else /* Nope, so disable big number formatting */
1210 big_num = false;
1211 } else if (big_num_opt == 0) /* User passed --no-big-num */
1212 big_num = false;
1213
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001214 if (!argc && target_pid == -1 && target_tid == -1)
Ingo Molnar52425192009-05-26 09:17:18 +02001215 usage_with_options(stat_usage, options);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +02001216 if (run_count <= 0)
Ingo Molnar42202dd2009-06-13 14:57:28 +02001217 usage_with_options(stat_usage, options);
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001218
Stephane Eranian023695d2011-02-14 11:20:01 +02001219 /* no_aggr, cgroup are for system-wide only */
1220 if ((no_aggr || nr_cgroups) && !system_wide) {
1221 fprintf(stderr, "both cgroup and no-aggregation "
1222 "modes only available in system-wide mode\n");
1223
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001224 usage_with_options(stat_usage, options);
Stephane Eranian023695d2011-02-14 11:20:01 +02001225 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001226
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001227 if (add_default_attributes())
1228 goto out;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001229
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001230 if (target_pid != -1)
1231 target_tid = target_pid;
1232
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001233 evsel_list->threads = thread_map__new(target_pid, target_tid);
1234 if (evsel_list->threads == NULL) {
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001235 pr_err("Problems finding threads of monitor\n");
1236 usage_with_options(stat_usage, options);
1237 }
1238
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001239 if (system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001240 evsel_list->cpus = cpu_map__new(cpu_list);
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001241 else
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001242 evsel_list->cpus = cpu_map__dummy_new();
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001243
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001244 if (evsel_list->cpus == NULL) {
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001245 perror("failed to parse CPUs map");
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001246 usage_with_options(stat_usage, options);
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001247 return -1;
1248 }
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001249
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001250 list_for_each_entry(pos, &evsel_list->entries, node) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -02001251 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001252 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
1253 perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001254 goto out_free_fd;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001255 }
1256
Ingo Molnar58d7e992009-05-15 11:03:23 +02001257 /*
1258 * We dont want to block the signals - that would cause
1259 * child tasks to inherit that and Ctrl-C would not work.
1260 * What we want is for Ctrl-C to work in the exec()-ed
1261 * task, but being ignored by perf stat itself:
1262 */
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001263 atexit(sig_atexit);
Ingo Molnar58d7e992009-05-15 11:03:23 +02001264 signal(SIGINT, skip_signal);
1265 signal(SIGALRM, skip_signal);
1266 signal(SIGABRT, skip_signal);
1267
Ingo Molnar42202dd2009-06-13 14:57:28 +02001268 status = 0;
1269 for (run_idx = 0; run_idx < run_count; run_idx++) {
1270 if (run_count != 1 && verbose)
Stephane Eranian4aa90152011-08-15 22:22:33 +02001271 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1272 run_idx + 1);
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001273
1274 if (sync_run)
1275 sync();
1276
Ingo Molnar42202dd2009-06-13 14:57:28 +02001277 status = run_perf_stat(argc, argv);
1278 }
1279
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -03001280 if (status != -1)
1281 print_stat(argc, argv);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001282out_free_fd:
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001283 list_for_each_entry(pos, &evsel_list->entries, node)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001284 perf_evsel__free_stat_priv(pos);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001285 perf_evlist__delete_maps(evsel_list);
Arnaldo Carvalho de Melo0015e2e2011-02-01 16:18:10 -02001286out:
1287 perf_evlist__delete(evsel_list);
Ingo Molnar42202dd2009-06-13 14:57:28 +02001288 return status;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001289}