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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;
Stephane Eranian5af52b52010-05-18 15:00:01 +0200196
Liming Wang60666c62009-12-31 16:05:50 +0800197static volatile int done = 0;
198
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200199struct stats
200{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200201 double n, mean, M2;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200202};
Ingo Molnar42202dd2009-06-13 14:57:28 +0200203
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200204struct perf_stat {
205 struct stats res_stats[3];
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200206};
207
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200208static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200209{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200210 evsel->priv = zalloc(sizeof(struct perf_stat));
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200211 return evsel->priv == NULL ? -ENOMEM : 0;
212}
213
214static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
215{
216 free(evsel->priv);
217 evsel->priv = NULL;
218}
219
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200220static void update_stats(struct stats *stats, u64 val)
221{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200222 double delta;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200223
Peter Zijlstra8a026312009-09-04 17:26:26 +0200224 stats->n++;
225 delta = val - stats->mean;
226 stats->mean += delta / stats->n;
227 stats->M2 += delta*(val - stats->mean);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200228}
229
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200230static double avg_stats(struct stats *stats)
231{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200232 return stats->mean;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200233}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200234
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200235/*
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200236 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
237 *
Peter Zijlstra8a026312009-09-04 17:26:26 +0200238 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
239 * s^2 = -------------------------------
240 * n - 1
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200241 *
242 * http://en.wikipedia.org/wiki/Stddev
243 *
244 * The std dev of the mean is related to the std dev by:
245 *
246 * s
247 * s_mean = -------
248 * sqrt(n)
249 *
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200250 */
251static double stddev_stats(struct stats *stats)
252{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200253 double variance = stats->M2 / (stats->n - 1);
254 double variance_mean = variance / stats->n;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200255
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200256 return sqrt(variance_mean);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200257}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200258
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200259struct stats runtime_nsecs_stats[MAX_NR_CPUS];
260struct stats runtime_cycles_stats[MAX_NR_CPUS];
Ingo Molnard3d1e862011-04-29 13:49:08 +0200261struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
262struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200263struct stats runtime_branches_stats[MAX_NR_CPUS];
Ingo Molnard58f4c82011-04-27 03:42:18 +0200264struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200265struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
Ingo Molnarc3305252011-05-19 14:01:42 +0200266struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
267struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
268struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
269struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200270struct stats walltime_nsecs_stats;
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200271
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200272static int create_perf_stat_counter(struct perf_evsel *evsel)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200273{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200274 struct perf_event_attr *attr = &evsel->attr;
Peter Zijlstra16c8a102009-05-05 17:50:27 +0200275
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200276 if (scale)
Ingo Molnara21ca2c2009-06-06 09:58:57 +0200277 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
278 PERF_FORMAT_TOTAL_TIME_RUNNING;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200279
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200280 attr->inherit = !no_inherit;
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300281
282 if (system_wide)
283 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false);
284
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200285 if (target_pid == -1 && target_tid == -1) {
286 attr->disabled = 1;
287 attr->enable_on_exec = 1;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200288 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300289
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300290 return perf_evsel__open_per_thread(evsel, evsel_list->threads, false);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200291}
292
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200293/*
294 * Does the counter have nsecs as a unit?
295 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200296static inline int nsec_counter(struct perf_evsel *evsel)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200297{
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200298 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
299 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200300 return 1;
301
302 return 0;
303}
304
305/*
Ingo Molnardcd99362011-04-27 04:36:37 +0200306 * Update various tracking values we maintain to print
307 * more semantic information such as miss/hit ratios,
308 * instruction rates, etc:
309 */
310static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
311{
312 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
313 update_stats(&runtime_nsecs_stats[0], count[0]);
314 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
315 update_stats(&runtime_cycles_stats[0], count[0]);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200316 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
317 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200318 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
Ingo Molnard3d1e862011-04-29 13:49:08 +0200319 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200320 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
321 update_stats(&runtime_branches_stats[0], count[0]);
322 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
323 update_stats(&runtime_cacherefs_stats[0], count[0]);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200324 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
325 update_stats(&runtime_l1_dcache_stats[0], count[0]);
Ingo Molnarc3305252011-05-19 14:01:42 +0200326 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
327 update_stats(&runtime_l1_icache_stats[0], count[0]);
328 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
329 update_stats(&runtime_ll_cache_stats[0], count[0]);
330 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
331 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
332 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
333 update_stats(&runtime_itlb_cache_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200334}
335
336/*
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200337 * Read out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200338 * aggregate counts across CPUs in system-wide mode
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200339 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200340static int read_counter_aggr(struct perf_evsel *counter)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200341{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200342 struct perf_stat *ps = counter->priv;
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200343 u64 *count = counter->counts->aggr.values;
344 int i;
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200345
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200346 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
347 evsel_list->threads->nr, scale) < 0)
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200348 return -1;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200349
350 for (i = 0; i < 3; i++)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200351 update_stats(&ps->res_stats[i], count[i]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200352
353 if (verbose) {
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200354 fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
355 event_name(counter), count[0], count[1], count[2]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200356 }
357
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200358 /*
359 * Save the full runtime - to allow normalization during printout:
360 */
Ingo Molnardcd99362011-04-27 04:36:37 +0200361 update_shadow_stats(counter, count);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200362
363 return 0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200364}
365
366/*
367 * Read out the results of a single counter:
368 * do not aggregate counts across CPUs in system-wide mode
369 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200370static int read_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200371{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200372 u64 *count;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200373 int cpu;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200374
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200375 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200376 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
377 return -1;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200378
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200379 count = counter->counts->cpu[cpu].values;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200380
Ingo Molnardcd99362011-04-27 04:36:37 +0200381 update_shadow_stats(counter, count);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200382 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200383
384 return 0;
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200385}
386
Ingo Molnarf37a2912009-07-01 12:37:06 +0200387static int run_perf_stat(int argc __used, const char **argv)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200388{
389 unsigned long long t0, t1;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200390 struct perf_evsel *counter;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200391 int status = 0;
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000392 int child_ready_pipe[2], go_pipe[2];
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300393 const bool forks = (argc > 0);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000394 char buf;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200395
Liming Wang60666c62009-12-31 16:05:50 +0800396 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000397 perror("failed to create pipes");
398 exit(1);
399 }
400
Liming Wang60666c62009-12-31 16:05:50 +0800401 if (forks) {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300402 if ((child_pid = fork()) < 0)
Liming Wang60666c62009-12-31 16:05:50 +0800403 perror("failed to fork");
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000404
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300405 if (!child_pid) {
Liming Wang60666c62009-12-31 16:05:50 +0800406 close(child_ready_pipe[0]);
407 close(go_pipe[1]);
408 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
409
410 /*
411 * Do a dummy execvp to get the PLT entry resolved,
412 * so we avoid the resolver overhead on the real
413 * execvp call.
414 */
415 execvp("", (char **)argv);
416
417 /*
418 * Tell the parent we're ready to go
419 */
420 close(child_ready_pipe[1]);
421
422 /*
423 * Wait until the parent tells us to go.
424 */
425 if (read(go_pipe[0], &buf, 1) == -1)
426 perror("unable to read pipe");
427
428 execvp(argv[0], (char **)argv);
429
430 perror(argv[0]);
431 exit(-1);
432 }
433
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300434 if (target_tid == -1 && target_pid == -1 && !system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200435 evsel_list->threads->map[0] = child_pid;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300436
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000437 /*
Liming Wang60666c62009-12-31 16:05:50 +0800438 * Wait for the child to be ready to exec.
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000439 */
440 close(child_ready_pipe[1]);
Liming Wang60666c62009-12-31 16:05:50 +0800441 close(go_pipe[0]);
442 if (read(child_ready_pipe[0], &buf, 1) == -1)
Frederic Weisbeckera92bef02009-07-01 21:02:10 +0200443 perror("unable to read pipe");
Liming Wang60666c62009-12-31 16:05:50 +0800444 close(child_ready_pipe[0]);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000445 }
446
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200447 list_for_each_entry(counter, &evsel_list->entries, node) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200448 if (create_perf_stat_counter(counter) < 0) {
David Ahernc63ca0c2011-04-29 16:04:15 -0600449 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) {
450 if (verbose)
451 ui__warning("%s event is not supported by the kernel.\n",
452 event_name(counter));
David Ahern2cee77c2011-05-30 08:55:59 -0600453 counter->supported = false;
Ingo Molnarede70292011-04-28 08:48:42 +0200454 continue;
David Ahernc63ca0c2011-04-29 16:04:15 -0600455 }
Ingo Molnarede70292011-04-28 08:48:42 +0200456
457 if (errno == EPERM || errno == EACCES) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200458 error("You may not have permission to collect %sstats.\n"
459 "\t Consider tweaking"
460 " /proc/sys/kernel/perf_event_paranoid or running as root.",
461 system_wide ? "system-wide " : "");
462 } else {
463 error("open_counter returned with %d (%s). "
464 "/bin/dmesg may provide additional information.\n",
465 errno, strerror(errno));
466 }
467 if (child_pid != -1)
468 kill(child_pid, SIGTERM);
469 die("Not all events could be opened.\n");
470 return -1;
471 }
David Ahern2cee77c2011-05-30 08:55:59 -0600472 counter->supported = true;
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300473 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200474
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100475 if (perf_evlist__set_filters(evsel_list)) {
476 error("failed to set filter with %d (%s)\n", errno,
477 strerror(errno));
478 return -1;
479 }
480
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200481 /*
482 * Enable counters and exec the command:
483 */
484 t0 = rdclock();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200485
Liming Wang60666c62009-12-31 16:05:50 +0800486 if (forks) {
487 close(go_pipe[1]);
488 wait(&status);
489 } else {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300490 while(!done) sleep(1);
Liming Wang60666c62009-12-31 16:05:50 +0800491 }
Ingo Molnar44db76c2009-06-03 19:36:07 +0200492
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200493 t1 = rdclock();
494
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200495 update_stats(&walltime_nsecs_stats, t1 - t0);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200496
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200497 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200498 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200499 read_counter(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200500 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200501 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200502 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200503 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200504 read_counter_aggr(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200505 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
506 evsel_list->threads->nr);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200507 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200508 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200509
Ingo Molnar42202dd2009-06-13 14:57:28 +0200510 return WEXITSTATUS(status);
511}
512
Ingo Molnarf99844c2011-04-27 05:35:39 +0200513static void print_noise_pct(double total, double avg)
514{
515 double pct = 0.0;
516
517 if (avg)
518 pct = 100.0*total/avg;
519
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700520 if (csv_output)
521 fprintf(stderr, "%s%.2f%%", csv_sep, pct);
522 else
523 fprintf(stderr, " ( +-%6.2f%% )", pct);
Ingo Molnarf99844c2011-04-27 05:35:39 +0200524}
525
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200526static void print_noise(struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200527{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200528 struct perf_stat *ps;
529
Peter Zijlstra849abde2009-09-04 18:23:38 +0200530 if (run_count == 1)
531 return;
532
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200533 ps = evsel->priv;
Ingo Molnarf99844c2011-04-27 05:35:39 +0200534 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200535}
536
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200537static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200538{
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200539 double msecs = avg / 1e6;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200540 char cpustr[16] = { '\0', };
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200541 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
Ingo Molnar42202dd2009-06-13 14:57:28 +0200542
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200543 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200544 sprintf(cpustr, "CPU%*d%s",
545 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200546 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200547
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200548 fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200549
Stephane Eranian023695d2011-02-14 11:20:01 +0200550 if (evsel->cgrp)
551 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
552
Stephane Eraniand7470b62010-12-01 18:49:05 +0200553 if (csv_output)
554 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200555
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200556 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnar481f9882011-04-27 04:34:16 +0200557 fprintf(stderr, " # %8.3f CPUs utilized ", avg / avg_stats(&walltime_nsecs_stats));
Ingo Molnar42202dd2009-06-13 14:57:28 +0200558}
559
Ingo Molnard3d1e862011-04-29 13:49:08 +0200560static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
561{
562 double total, ratio = 0.0;
563 const char *color;
564
565 total = avg_stats(&runtime_cycles_stats[cpu]);
566
567 if (total)
568 ratio = avg / total * 100.0;
569
570 color = PERF_COLOR_NORMAL;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200571 if (ratio > 50.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200572 color = PERF_COLOR_RED;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200573 else if (ratio > 30.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200574 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200575 else if (ratio > 10.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200576 color = PERF_COLOR_YELLOW;
577
Ingo Molnarfce3c782011-04-30 09:03:15 +0200578 fprintf(stderr, " # ");
579 color_fprintf(stderr, color, "%6.2f%%", ratio);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200580 fprintf(stderr, " frontend cycles idle ");
581}
582
583static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200584{
585 double total, ratio = 0.0;
586 const char *color;
587
588 total = avg_stats(&runtime_cycles_stats[cpu]);
589
590 if (total)
591 ratio = avg / total * 100.0;
592
593 color = PERF_COLOR_NORMAL;
594 if (ratio > 75.0)
595 color = PERF_COLOR_RED;
596 else if (ratio > 50.0)
597 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200598 else if (ratio > 20.0)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200599 color = PERF_COLOR_YELLOW;
600
Ingo Molnarfce3c782011-04-30 09:03:15 +0200601 fprintf(stderr, " # ");
602 color_fprintf(stderr, color, "%6.2f%%", ratio);
603 fprintf(stderr, " backend cycles idle ");
Ingo Molnara5d243d2011-04-27 05:39:24 +0200604}
605
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200606static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
607{
608 double total, ratio = 0.0;
609 const char *color;
610
611 total = avg_stats(&runtime_branches_stats[cpu]);
612
613 if (total)
614 ratio = avg / total * 100.0;
615
616 color = PERF_COLOR_NORMAL;
617 if (ratio > 20.0)
618 color = PERF_COLOR_RED;
619 else if (ratio > 10.0)
620 color = PERF_COLOR_MAGENTA;
621 else if (ratio > 5.0)
622 color = PERF_COLOR_YELLOW;
623
Ingo Molnarfce3c782011-04-30 09:03:15 +0200624 fprintf(stderr, " # ");
625 color_fprintf(stderr, color, "%6.2f%%", ratio);
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200626 fprintf(stderr, " of all branches ");
627}
628
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200629static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
630{
631 double total, ratio = 0.0;
632 const char *color;
633
634 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
635
636 if (total)
637 ratio = avg / total * 100.0;
638
639 color = PERF_COLOR_NORMAL;
640 if (ratio > 20.0)
641 color = PERF_COLOR_RED;
642 else if (ratio > 10.0)
643 color = PERF_COLOR_MAGENTA;
644 else if (ratio > 5.0)
645 color = PERF_COLOR_YELLOW;
646
Ingo Molnarfce3c782011-04-30 09:03:15 +0200647 fprintf(stderr, " # ");
648 color_fprintf(stderr, color, "%6.2f%%", ratio);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200649 fprintf(stderr, " of all L1-dcache hits ");
650}
651
Ingo Molnarc3305252011-05-19 14:01:42 +0200652static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
653{
654 double total, ratio = 0.0;
655 const char *color;
656
657 total = avg_stats(&runtime_l1_icache_stats[cpu]);
658
659 if (total)
660 ratio = avg / total * 100.0;
661
662 color = PERF_COLOR_NORMAL;
663 if (ratio > 20.0)
664 color = PERF_COLOR_RED;
665 else if (ratio > 10.0)
666 color = PERF_COLOR_MAGENTA;
667 else if (ratio > 5.0)
668 color = PERF_COLOR_YELLOW;
669
670 fprintf(stderr, " # ");
671 color_fprintf(stderr, color, "%6.2f%%", ratio);
672 fprintf(stderr, " of all L1-icache hits ");
673}
674
675static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
676{
677 double total, ratio = 0.0;
678 const char *color;
679
680 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
681
682 if (total)
683 ratio = avg / total * 100.0;
684
685 color = PERF_COLOR_NORMAL;
686 if (ratio > 20.0)
687 color = PERF_COLOR_RED;
688 else if (ratio > 10.0)
689 color = PERF_COLOR_MAGENTA;
690 else if (ratio > 5.0)
691 color = PERF_COLOR_YELLOW;
692
693 fprintf(stderr, " # ");
694 color_fprintf(stderr, color, "%6.2f%%", ratio);
695 fprintf(stderr, " of all dTLB cache hits ");
696}
697
698static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
699{
700 double total, ratio = 0.0;
701 const char *color;
702
703 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
704
705 if (total)
706 ratio = avg / total * 100.0;
707
708 color = PERF_COLOR_NORMAL;
709 if (ratio > 20.0)
710 color = PERF_COLOR_RED;
711 else if (ratio > 10.0)
712 color = PERF_COLOR_MAGENTA;
713 else if (ratio > 5.0)
714 color = PERF_COLOR_YELLOW;
715
716 fprintf(stderr, " # ");
717 color_fprintf(stderr, color, "%6.2f%%", ratio);
718 fprintf(stderr, " of all iTLB cache hits ");
719}
720
721static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
722{
723 double total, ratio = 0.0;
724 const char *color;
725
726 total = avg_stats(&runtime_ll_cache_stats[cpu]);
727
728 if (total)
729 ratio = avg / total * 100.0;
730
731 color = PERF_COLOR_NORMAL;
732 if (ratio > 20.0)
733 color = PERF_COLOR_RED;
734 else if (ratio > 10.0)
735 color = PERF_COLOR_MAGENTA;
736 else if (ratio > 5.0)
737 color = PERF_COLOR_YELLOW;
738
739 fprintf(stderr, " # ");
740 color_fprintf(stderr, color, "%6.2f%%", ratio);
741 fprintf(stderr, " of all LL-cache hits ");
742}
743
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200744static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200745{
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200746 double total, ratio = 0.0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200747 char cpustr[16] = { '\0', };
Stephane Eraniand7470b62010-12-01 18:49:05 +0200748 const char *fmt;
749
750 if (csv_output)
751 fmt = "%s%.0f%s%s";
752 else if (big_num)
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200753 fmt = "%s%'18.0f%s%-25s";
Stephane Eraniand7470b62010-12-01 18:49:05 +0200754 else
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200755 fmt = "%s%18.0f%s%-25s";
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200756
757 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200758 sprintf(cpustr, "CPU%*d%s",
759 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200760 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200761 else
762 cpu = 0;
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200763
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200764 fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200765
Stephane Eranian023695d2011-02-14 11:20:01 +0200766 if (evsel->cgrp)
767 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
768
Stephane Eraniand7470b62010-12-01 18:49:05 +0200769 if (csv_output)
770 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200771
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200772 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200773 total = avg_stats(&runtime_cycles_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200774
775 if (total)
776 ratio = avg / total;
777
Ingo Molnarfce3c782011-04-30 09:03:15 +0200778 fprintf(stderr, " # %5.2f insns per cycle ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200779
Ingo Molnard3d1e862011-04-29 13:49:08 +0200780 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
781 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
Ingo Molnar481f9882011-04-27 04:34:16 +0200782
783 if (total && avg) {
784 ratio = total / avg;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200785 fprintf(stderr, "\n # %5.2f stalled cycles per insn", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200786 }
787
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200788 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200789 runtime_branches_stats[cpu].n != 0) {
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200790 print_branch_misses(cpu, evsel, avg);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200791 } else if (
792 evsel->attr.type == PERF_TYPE_HW_CACHE &&
793 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
794 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
795 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
Ingo Molnarc6264de2011-04-27 13:50:47 +0200796 runtime_l1_dcache_stats[cpu].n != 0) {
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200797 print_l1_dcache_misses(cpu, evsel, avg);
Ingo Molnarc3305252011-05-19 14:01:42 +0200798 } else if (
799 evsel->attr.type == PERF_TYPE_HW_CACHE &&
800 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
801 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
802 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
803 runtime_l1_icache_stats[cpu].n != 0) {
804 print_l1_icache_misses(cpu, evsel, avg);
805 } else if (
806 evsel->attr.type == PERF_TYPE_HW_CACHE &&
807 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
808 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
809 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
810 runtime_dtlb_cache_stats[cpu].n != 0) {
811 print_dtlb_cache_misses(cpu, evsel, avg);
812 } else if (
813 evsel->attr.type == PERF_TYPE_HW_CACHE &&
814 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
815 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
816 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
817 runtime_itlb_cache_stats[cpu].n != 0) {
818 print_itlb_cache_misses(cpu, evsel, avg);
819 } else if (
820 evsel->attr.type == PERF_TYPE_HW_CACHE &&
821 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
822 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
823 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
824 runtime_ll_cache_stats[cpu].n != 0) {
825 print_ll_cache_misses(cpu, evsel, avg);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200826 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
827 runtime_cacherefs_stats[cpu].n != 0) {
828 total = avg_stats(&runtime_cacherefs_stats[cpu]);
829
830 if (total)
831 ratio = avg * 100 / total;
832
Ingo Molnar481f9882011-04-27 04:34:16 +0200833 fprintf(stderr, " # %8.3f %% of all cache refs ", ratio);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200834
Ingo Molnard3d1e862011-04-29 13:49:08 +0200835 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
836 print_stalled_cycles_frontend(cpu, evsel, avg);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200837 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
Ingo Molnard3d1e862011-04-29 13:49:08 +0200838 print_stalled_cycles_backend(cpu, evsel, avg);
Ingo Molnar481f9882011-04-27 04:34:16 +0200839 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
840 total = avg_stats(&runtime_nsecs_stats[cpu]);
841
842 if (total)
843 ratio = 1.0 * avg / total;
844
845 fprintf(stderr, " # %8.3f GHz ", ratio);
846 } else if (runtime_nsecs_stats[cpu].n != 0) {
847 total = avg_stats(&runtime_nsecs_stats[cpu]);
848
849 if (total)
850 ratio = 1000.0 * avg / total;
851
852 fprintf(stderr, " # %8.3f M/sec ", ratio);
Ingo Molnara5d243d2011-04-27 05:39:24 +0200853 } else {
854 fprintf(stderr, " ");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200855 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200856}
857
858/*
859 * Print out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200860 * aggregated counts in system-wide mode
Ingo Molnar42202dd2009-06-13 14:57:28 +0200861 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200862static void print_counter_aggr(struct perf_evsel *counter)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200863{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200864 struct perf_stat *ps = counter->priv;
865 double avg = avg_stats(&ps->res_stats[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200866 int scaled = counter->counts->scaled;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200867
Ingo Molnar42202dd2009-06-13 14:57:28 +0200868 if (scaled == -1) {
Stephane Eranian023695d2011-02-14 11:20:01 +0200869 fprintf(stderr, "%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200870 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600871 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
Stephane Eranian023695d2011-02-14 11:20:01 +0200872 csv_sep,
873 csv_output ? 0 : -24,
874 event_name(counter));
875
876 if (counter->cgrp)
877 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
878
879 fputc('\n', stderr);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200880 return;
881 }
882
883 if (nsec_counter(counter))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200884 nsec_printout(-1, counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200885 else
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200886 abs_printout(-1, counter, avg);
Peter Zijlstra849abde2009-09-04 18:23:38 +0200887
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700888 print_noise(counter, avg);
889
Stephane Eraniand7470b62010-12-01 18:49:05 +0200890 if (csv_output) {
891 fputc('\n', stderr);
892 return;
893 }
894
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200895 if (scaled) {
896 double avg_enabled, avg_running;
897
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200898 avg_enabled = avg_stats(&ps->res_stats[1]);
899 avg_running = avg_stats(&ps->res_stats[2]);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200900
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200901 fprintf(stderr, " [%5.2f%%]", 100 * avg_running / avg_enabled);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200902 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200903 fprintf(stderr, "\n");
904}
905
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200906/*
907 * Print out the results of a single counter:
908 * does not use aggregated count in system-wide
909 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200910static void print_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200911{
912 u64 ena, run, val;
913 int cpu;
914
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200915 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200916 val = counter->counts->cpu[cpu].val;
917 ena = counter->counts->cpu[cpu].ena;
918 run = counter->counts->cpu[cpu].run;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200919 if (run == 0 || ena == 0) {
Stephane Eranian023695d2011-02-14 11:20:01 +0200920 fprintf(stderr, "CPU%*d%s%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200921 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200922 evsel_list->cpus->map[cpu], csv_sep,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200923 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600924 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
925 csv_sep,
Stephane Eranian023695d2011-02-14 11:20:01 +0200926 csv_output ? 0 : -24,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200927 event_name(counter));
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200928
Stephane Eranian023695d2011-02-14 11:20:01 +0200929 if (counter->cgrp)
930 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
931
932 fputc('\n', stderr);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200933 continue;
934 }
935
936 if (nsec_counter(counter))
937 nsec_printout(cpu, counter, val);
938 else
939 abs_printout(cpu, counter, val);
940
Stephane Eraniand7470b62010-12-01 18:49:05 +0200941 if (!csv_output) {
942 print_noise(counter, 1.0);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200943
Ingo Molnarc6264de2011-04-27 13:50:47 +0200944 if (run != ena)
945 fprintf(stderr, " (%.2f%%)", 100.0 * run / ena);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200946 }
Stephane Eranian023695d2011-02-14 11:20:01 +0200947 fputc('\n', stderr);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200948 }
949}
950
Ingo Molnar42202dd2009-06-13 14:57:28 +0200951static void print_stat(int argc, const char **argv)
952{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200953 struct perf_evsel *counter;
954 int i;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200955
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200956 fflush(stdout);
957
Stephane Eraniand7470b62010-12-01 18:49:05 +0200958 if (!csv_output) {
959 fprintf(stderr, "\n");
960 fprintf(stderr, " Performance counter stats for ");
961 if(target_pid == -1 && target_tid == -1) {
962 fprintf(stderr, "\'%s", argv[0]);
963 for (i = 1; i < argc; i++)
964 fprintf(stderr, " %s", argv[i]);
965 } else if (target_pid != -1)
966 fprintf(stderr, "process id \'%d", target_pid);
967 else
968 fprintf(stderr, "thread id \'%d", target_tid);
Ingo Molnar44db76c2009-06-03 19:36:07 +0200969
Stephane Eraniand7470b62010-12-01 18:49:05 +0200970 fprintf(stderr, "\'");
971 if (run_count > 1)
972 fprintf(stderr, " (%d runs)", run_count);
973 fprintf(stderr, ":\n\n");
974 }
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200975
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200976 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200977 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200978 print_counter(counter);
979 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200980 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200981 print_counter_aggr(counter);
982 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200983
Stephane Eraniand7470b62010-12-01 18:49:05 +0200984 if (!csv_output) {
Ingo Molnarc3305252011-05-19 14:01:42 +0200985 if (!null_run)
986 fprintf(stderr, "\n");
987 fprintf(stderr, " %17.9f seconds time elapsed",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200988 avg_stats(&walltime_nsecs_stats)/1e9);
989 if (run_count > 1) {
Ingo Molnarc3305252011-05-19 14:01:42 +0200990 fprintf(stderr, " ");
Ingo Molnarf99844c2011-04-27 05:35:39 +0200991 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
992 avg_stats(&walltime_nsecs_stats));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200993 }
994 fprintf(stderr, "\n\n");
Ingo Molnar566747e2009-06-27 06:24:32 +0200995 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200996}
997
Peter Zijlstraf7b7c262009-06-10 15:55:59 +0200998static volatile int signr = -1;
999
Ingo Molnar52425192009-05-26 09:17:18 +02001000static void skip_signal(int signo)
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001001{
Zhang, Yanmin6be28502010-03-18 11:36:03 -03001002 if(child_pid == -1)
Liming Wang60666c62009-12-31 16:05:50 +08001003 done = 1;
1004
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001005 signr = signo;
1006}
1007
1008static void sig_atexit(void)
1009{
Chris Wilson933da832009-10-04 01:35:01 +01001010 if (child_pid != -1)
1011 kill(child_pid, SIGTERM);
1012
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001013 if (signr == -1)
1014 return;
1015
1016 signal(signr, SIG_DFL);
1017 kill(getpid(), signr);
Ingo Molnar52425192009-05-26 09:17:18 +02001018}
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001019
Ingo Molnar52425192009-05-26 09:17:18 +02001020static const char * const stat_usage[] = {
Liming Wang60666c62009-12-31 16:05:50 +08001021 "perf stat [<options>] [<command>]",
Ingo Molnar52425192009-05-26 09:17:18 +02001022 NULL
1023};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001024
Stephane Eraniand7470b62010-12-01 18:49:05 +02001025static int stat__set_big_num(const struct option *opt __used,
1026 const char *s __used, int unset)
1027{
1028 big_num_opt = unset ? 0 : 1;
1029 return 0;
1030}
1031
Ingo Molnar52425192009-05-26 09:17:18 +02001032static const struct option options[] = {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001033 OPT_CALLBACK('e', "event", &evsel_list, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001034 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001035 parse_events_option),
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +01001036 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1037 "event filter", parse_filter),
Stephane Eranian2e6cdf92010-05-12 10:40:01 +02001038 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1039 "child tasks do not inherit counters"),
Ingo Molnar52425192009-05-26 09:17:18 +02001040 OPT_INTEGER('p', "pid", &target_pid,
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001041 "stat events on existing process id"),
1042 OPT_INTEGER('t', "tid", &target_tid,
1043 "stat events on existing thread id"),
Ingo Molnar52425192009-05-26 09:17:18 +02001044 OPT_BOOLEAN('a', "all-cpus", &system_wide,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301045 "system-wide collection from all CPUs"),
Brice Goglinb26bc5a2009-08-07 10:18:39 +02001046 OPT_BOOLEAN('c', "scale", &scale,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301047 "scale/normalize counters"),
Ian Munsiec0555642010-04-13 18:37:33 +10001048 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar743ee1f2009-06-07 17:06:46 +02001049 "be more verbose (show counter open errors, etc)"),
Ingo Molnar42202dd2009-06-13 14:57:28 +02001050 OPT_INTEGER('r', "repeat", &run_count,
1051 "repeat command and print average + stddev (max: 100)"),
Ingo Molnar0cfb7a12009-06-27 06:10:30 +02001052 OPT_BOOLEAN('n', "null", &null_run,
1053 "null run - dont start any counters"),
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001054 OPT_INCR('d', "detailed", &detailed_run,
Ingo Molnarc6264de2011-04-27 13:50:47 +02001055 "detailed run - start a lot of events"),
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001056 OPT_BOOLEAN('S', "sync", &sync_run,
1057 "call sync() before starting a run"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001058 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1059 "print large numbers with thousands\' separators",
1060 stat__set_big_num),
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001061 OPT_STRING('C', "cpu", &cpu_list, "cpu",
1062 "list of cpus to monitor in system-wide"),
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001063 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
1064 "disable CPU count aggregation"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001065 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1066 "print counts with custom separator"),
Stephane Eranian023695d2011-02-14 11:20:01 +02001067 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1068 "monitor event in cgroup name only",
1069 parse_cgroups),
Ingo Molnar52425192009-05-26 09:17:18 +02001070 OPT_END()
1071};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001072
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001073/*
1074 * Add default attributes, if there were no attributes specified or
1075 * if -d/--detailed, -d -d or -d -d -d is used:
1076 */
1077static int add_default_attributes(void)
1078{
1079 struct perf_evsel *pos;
1080 size_t attr_nr = 0;
1081 size_t c;
1082
1083 /* Set attrs if no event is selected and !null_run: */
1084 if (null_run)
1085 return 0;
1086
1087 if (!evsel_list->nr_entries) {
1088 for (c = 0; c < ARRAY_SIZE(default_attrs); c++) {
1089 pos = perf_evsel__new(default_attrs + c, c + attr_nr);
1090 if (pos == NULL)
1091 return -1;
1092 perf_evlist__add(evsel_list, pos);
1093 }
1094 attr_nr += c;
1095 }
1096
1097 /* Detailed events get appended to the event list: */
1098
1099 if (detailed_run < 1)
1100 return 0;
1101
1102 /* Append detailed run extra attributes: */
1103 for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) {
1104 pos = perf_evsel__new(detailed_attrs + c, c + attr_nr);
1105 if (pos == NULL)
1106 return -1;
1107 perf_evlist__add(evsel_list, pos);
1108 }
1109 attr_nr += c;
1110
1111 if (detailed_run < 2)
1112 return 0;
1113
1114 /* Append very detailed run extra attributes: */
1115 for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) {
1116 pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr);
1117 if (pos == NULL)
1118 return -1;
1119 perf_evlist__add(evsel_list, pos);
1120 }
1121
1122 if (detailed_run < 3)
1123 return 0;
1124
1125 /* Append very, very detailed run extra attributes: */
1126 for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) {
1127 pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr);
1128 if (pos == NULL)
1129 return -1;
1130 perf_evlist__add(evsel_list, pos);
1131 }
1132
1133
1134 return 0;
1135}
1136
Ingo Molnarf37a2912009-07-01 12:37:06 +02001137int cmd_stat(int argc, const char **argv, const char *prefix __used)
Ingo Molnar52425192009-05-26 09:17:18 +02001138{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001139 struct perf_evsel *pos;
1140 int status = -ENOMEM;
Ingo Molnar42202dd2009-06-13 14:57:28 +02001141
Stephane Eranian5af52b52010-05-18 15:00:01 +02001142 setlocale(LC_ALL, "");
1143
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001144 evsel_list = perf_evlist__new(NULL, NULL);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001145 if (evsel_list == NULL)
1146 return -ENOMEM;
1147
Anton Blancharda0541232009-07-22 23:04:12 +10001148 argc = parse_options(argc, argv, options, stat_usage,
1149 PARSE_OPT_STOP_AT_NON_OPTION);
Stephane Eraniand7470b62010-12-01 18:49:05 +02001150
1151 if (csv_sep)
1152 csv_output = true;
1153 else
1154 csv_sep = DEFAULT_SEPARATOR;
1155
1156 /*
1157 * let the spreadsheet do the pretty-printing
1158 */
1159 if (csv_output) {
1160 /* User explicitely passed -B? */
1161 if (big_num_opt == 1) {
1162 fprintf(stderr, "-B option not supported with -x\n");
1163 usage_with_options(stat_usage, options);
1164 } else /* Nope, so disable big number formatting */
1165 big_num = false;
1166 } else if (big_num_opt == 0) /* User passed --no-big-num */
1167 big_num = false;
1168
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001169 if (!argc && target_pid == -1 && target_tid == -1)
Ingo Molnar52425192009-05-26 09:17:18 +02001170 usage_with_options(stat_usage, options);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +02001171 if (run_count <= 0)
Ingo Molnar42202dd2009-06-13 14:57:28 +02001172 usage_with_options(stat_usage, options);
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001173
Stephane Eranian023695d2011-02-14 11:20:01 +02001174 /* no_aggr, cgroup are for system-wide only */
1175 if ((no_aggr || nr_cgroups) && !system_wide) {
1176 fprintf(stderr, "both cgroup and no-aggregation "
1177 "modes only available in system-wide mode\n");
1178
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001179 usage_with_options(stat_usage, options);
Stephane Eranian023695d2011-02-14 11:20:01 +02001180 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001181
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001182 if (add_default_attributes())
1183 goto out;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001184
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001185 if (target_pid != -1)
1186 target_tid = target_pid;
1187
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001188 evsel_list->threads = thread_map__new(target_pid, target_tid);
1189 if (evsel_list->threads == NULL) {
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001190 pr_err("Problems finding threads of monitor\n");
1191 usage_with_options(stat_usage, options);
1192 }
1193
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001194 if (system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001195 evsel_list->cpus = cpu_map__new(cpu_list);
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001196 else
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001197 evsel_list->cpus = cpu_map__dummy_new();
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001198
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001199 if (evsel_list->cpus == NULL) {
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001200 perror("failed to parse CPUs map");
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001201 usage_with_options(stat_usage, options);
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001202 return -1;
1203 }
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001204
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001205 list_for_each_entry(pos, &evsel_list->entries, node) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -02001206 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001207 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
1208 perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001209 goto out_free_fd;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001210 }
1211
Ingo Molnar58d7e992009-05-15 11:03:23 +02001212 /*
1213 * We dont want to block the signals - that would cause
1214 * child tasks to inherit that and Ctrl-C would not work.
1215 * What we want is for Ctrl-C to work in the exec()-ed
1216 * task, but being ignored by perf stat itself:
1217 */
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001218 atexit(sig_atexit);
Ingo Molnar58d7e992009-05-15 11:03:23 +02001219 signal(SIGINT, skip_signal);
1220 signal(SIGALRM, skip_signal);
1221 signal(SIGABRT, skip_signal);
1222
Ingo Molnar42202dd2009-06-13 14:57:28 +02001223 status = 0;
1224 for (run_idx = 0; run_idx < run_count; run_idx++) {
1225 if (run_count != 1 && verbose)
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301226 fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1);
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001227
1228 if (sync_run)
1229 sync();
1230
Ingo Molnar42202dd2009-06-13 14:57:28 +02001231 status = run_perf_stat(argc, argv);
1232 }
1233
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -03001234 if (status != -1)
1235 print_stat(argc, argv);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001236out_free_fd:
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001237 list_for_each_entry(pos, &evsel_list->entries, node)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001238 perf_evsel__free_stat_priv(pos);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001239 perf_evlist__delete_maps(evsel_list);
Arnaldo Carvalho de Melo0015e2e2011-02-01 16:18:10 -02001240out:
1241 perf_evlist__delete(evsel_list);
Ingo Molnar42202dd2009-06-13 14:57:28 +02001242 return status;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001243}