blob: d0605689bad9f929f1f790071fd753aec57008bc [file] [log] [blame]
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
Robert Richter666e6d42012-04-05 18:26:27 +0200176static struct perf_evlist *evsel_list;
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200177
Namhyung Kim77a6f012012-05-07 14:09:04 +0900178static struct perf_target target = {
179 .uid = UINT_MAX,
180};
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530181
Namhyung Kim20f946b2012-04-26 14:15:16 +0900182static int run_idx = 0;
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530183static int run_count = 1;
Stephane Eranian2e6cdf92010-05-12 10:40:01 +0200184static bool no_inherit = false;
Ian Munsiec0555642010-04-13 18:37:33 +1000185static bool scale = true;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200186static bool no_aggr = false;
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 Eraniand7470b62010-12-01 18:49:05 +0200193static const char *csv_sep = NULL;
194static bool csv_output = false;
Lin Ming43bece72011-08-17 18:42:07 +0800195static bool group = false;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200196static const char *output_name = NULL;
197static FILE *output = NULL;
Jim Cromie56f3bae2011-09-07 17:14:00 -0600198static int output_fd;
Stephane Eranian5af52b52010-05-18 15:00:01 +0200199
Liming Wang60666c62009-12-31 16:05:50 +0800200static volatile int done = 0;
201
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200202struct stats
203{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200204 double n, mean, M2;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200205};
Ingo Molnar42202dd2009-06-13 14:57:28 +0200206
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200207struct perf_stat {
208 struct stats res_stats[3];
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200209};
210
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200211static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200212{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200213 evsel->priv = zalloc(sizeof(struct perf_stat));
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200214 return evsel->priv == NULL ? -ENOMEM : 0;
215}
216
217static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
218{
219 free(evsel->priv);
220 evsel->priv = NULL;
221}
222
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200223static void update_stats(struct stats *stats, u64 val)
224{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200225 double delta;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200226
Peter Zijlstra8a026312009-09-04 17:26:26 +0200227 stats->n++;
228 delta = val - stats->mean;
229 stats->mean += delta / stats->n;
230 stats->M2 += delta*(val - stats->mean);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200231}
232
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200233static double avg_stats(struct stats *stats)
234{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200235 return stats->mean;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200236}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200237
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200238/*
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200239 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
240 *
Peter Zijlstra8a026312009-09-04 17:26:26 +0200241 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
242 * s^2 = -------------------------------
243 * n - 1
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200244 *
245 * http://en.wikipedia.org/wiki/Stddev
246 *
247 * The std dev of the mean is related to the std dev by:
248 *
249 * s
250 * s_mean = -------
251 * sqrt(n)
252 *
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200253 */
254static double stddev_stats(struct stats *stats)
255{
Jim Cromie19f47402011-09-07 17:14:01 -0600256 double variance, variance_mean;
257
258 if (!stats->n)
259 return 0.0;
260
261 variance = stats->M2 / (stats->n - 1);
262 variance_mean = variance / stats->n;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200263
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200264 return sqrt(variance_mean);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200265}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200266
Robert Richter666e6d42012-04-05 18:26:27 +0200267static struct stats runtime_nsecs_stats[MAX_NR_CPUS];
268static struct stats runtime_cycles_stats[MAX_NR_CPUS];
269static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
270static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
271static struct stats runtime_branches_stats[MAX_NR_CPUS];
272static struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
273static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
274static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
275static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
276static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
277static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
278static struct stats walltime_nsecs_stats;
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200279
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200280static int create_perf_stat_counter(struct perf_evsel *evsel,
281 struct perf_evsel *first)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200282{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200283 struct perf_event_attr *attr = &evsel->attr;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200284 struct xyarray *group_fd = NULL;
285
286 if (group && evsel != first)
287 group_fd = first->fd;
Peter Zijlstra16c8a102009-05-05 17:50:27 +0200288
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200289 if (scale)
Ingo Molnara21ca2c2009-06-06 09:58:57 +0200290 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
291 PERF_FORMAT_TOTAL_TIME_RUNNING;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200292
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200293 attr->inherit = !no_inherit;
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300294
Namhyung Kimd67356e2012-05-07 14:09:03 +0900295 if (!perf_target__no_cpu(&target))
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200296 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
297 group, group_fd);
Namhyung Kimd67356e2012-05-07 14:09:03 +0900298 if (perf_target__no_task(&target) && (!group || evsel == first)) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200299 attr->disabled = 1;
300 attr->enable_on_exec = 1;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200301 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300302
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200303 return perf_evsel__open_per_thread(evsel, evsel_list->threads,
304 group, group_fd);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200305}
306
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200307/*
308 * Does the counter have nsecs as a unit?
309 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200310static inline int nsec_counter(struct perf_evsel *evsel)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200311{
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200312 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
313 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200314 return 1;
315
316 return 0;
317}
318
319/*
Ingo Molnardcd99362011-04-27 04:36:37 +0200320 * Update various tracking values we maintain to print
321 * more semantic information such as miss/hit ratios,
322 * instruction rates, etc:
323 */
324static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
325{
326 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
327 update_stats(&runtime_nsecs_stats[0], count[0]);
328 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
329 update_stats(&runtime_cycles_stats[0], count[0]);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200330 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
331 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200332 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
Ingo Molnard3d1e862011-04-29 13:49:08 +0200333 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200334 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
335 update_stats(&runtime_branches_stats[0], count[0]);
336 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
337 update_stats(&runtime_cacherefs_stats[0], count[0]);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200338 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
339 update_stats(&runtime_l1_dcache_stats[0], count[0]);
Ingo Molnarc3305252011-05-19 14:01:42 +0200340 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
341 update_stats(&runtime_l1_icache_stats[0], count[0]);
342 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
343 update_stats(&runtime_ll_cache_stats[0], count[0]);
344 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
345 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
346 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
347 update_stats(&runtime_itlb_cache_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200348}
349
350/*
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200351 * Read out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200352 * aggregate counts across CPUs in system-wide mode
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200353 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200354static int read_counter_aggr(struct perf_evsel *counter)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200355{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200356 struct perf_stat *ps = counter->priv;
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200357 u64 *count = counter->counts->aggr.values;
358 int i;
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200359
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200360 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
361 evsel_list->threads->nr, scale) < 0)
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200362 return -1;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200363
364 for (i = 0; i < 3; i++)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200365 update_stats(&ps->res_stats[i], count[i]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200366
367 if (verbose) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200368 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200369 event_name(counter), count[0], count[1], count[2]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200370 }
371
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200372 /*
373 * Save the full runtime - to allow normalization during printout:
374 */
Ingo Molnardcd99362011-04-27 04:36:37 +0200375 update_shadow_stats(counter, count);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200376
377 return 0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200378}
379
380/*
381 * Read out the results of a single counter:
382 * do not aggregate counts across CPUs in system-wide mode
383 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200384static int read_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200385{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200386 u64 *count;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200387 int cpu;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200388
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200389 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200390 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
391 return -1;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200392
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200393 count = counter->counts->cpu[cpu].values;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200394
Ingo Molnardcd99362011-04-27 04:36:37 +0200395 update_shadow_stats(counter, count);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200396 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200397
398 return 0;
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200399}
400
Ingo Molnarf37a2912009-07-01 12:37:06 +0200401static int run_perf_stat(int argc __used, const char **argv)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200402{
403 unsigned long long t0, t1;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200404 struct perf_evsel *counter, *first;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200405 int status = 0;
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000406 int child_ready_pipe[2], go_pipe[2];
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300407 const bool forks = (argc > 0);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000408 char buf;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200409
Liming Wang60666c62009-12-31 16:05:50 +0800410 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000411 perror("failed to create pipes");
412 exit(1);
413 }
414
Liming Wang60666c62009-12-31 16:05:50 +0800415 if (forks) {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300416 if ((child_pid = fork()) < 0)
Liming Wang60666c62009-12-31 16:05:50 +0800417 perror("failed to fork");
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000418
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300419 if (!child_pid) {
Liming Wang60666c62009-12-31 16:05:50 +0800420 close(child_ready_pipe[0]);
421 close(go_pipe[1]);
422 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
423
424 /*
425 * Do a dummy execvp to get the PLT entry resolved,
426 * so we avoid the resolver overhead on the real
427 * execvp call.
428 */
429 execvp("", (char **)argv);
430
431 /*
432 * Tell the parent we're ready to go
433 */
434 close(child_ready_pipe[1]);
435
436 /*
437 * Wait until the parent tells us to go.
438 */
439 if (read(go_pipe[0], &buf, 1) == -1)
440 perror("unable to read pipe");
441
442 execvp(argv[0], (char **)argv);
443
444 perror(argv[0]);
445 exit(-1);
446 }
447
Namhyung Kimd67356e2012-05-07 14:09:03 +0900448 if (perf_target__none(&target))
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200449 evsel_list->threads->map[0] = child_pid;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300450
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000451 /*
Liming Wang60666c62009-12-31 16:05:50 +0800452 * Wait for the child to be ready to exec.
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000453 */
454 close(child_ready_pipe[1]);
Liming Wang60666c62009-12-31 16:05:50 +0800455 close(go_pipe[0]);
456 if (read(child_ready_pipe[0], &buf, 1) == -1)
Frederic Weisbeckera92bef02009-07-01 21:02:10 +0200457 perror("unable to read pipe");
Liming Wang60666c62009-12-31 16:05:50 +0800458 close(child_ready_pipe[0]);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000459 }
460
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200461 first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
462
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200463 list_for_each_entry(counter, &evsel_list->entries, node) {
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200464 if (create_perf_stat_counter(counter, first) < 0) {
David Ahern979987a2012-05-08 09:29:16 -0600465 /*
466 * PPC returns ENXIO for HW counters until 2.6.37
467 * (behavior changed with commit b0a873e).
468 */
Anton Blanchard38f6ae12011-12-02 09:38:33 +1100469 if (errno == EINVAL || errno == ENOSYS ||
David Ahern979987a2012-05-08 09:29:16 -0600470 errno == ENOENT || errno == EOPNOTSUPP ||
471 errno == ENXIO) {
David Ahernc63ca0c2011-04-29 16:04:15 -0600472 if (verbose)
473 ui__warning("%s event is not supported by the kernel.\n",
474 event_name(counter));
David Ahern2cee77c2011-05-30 08:55:59 -0600475 counter->supported = false;
Ingo Molnarede70292011-04-28 08:48:42 +0200476 continue;
David Ahernc63ca0c2011-04-29 16:04:15 -0600477 }
Ingo Molnarede70292011-04-28 08:48:42 +0200478
479 if (errno == EPERM || errno == EACCES) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200480 error("You may not have permission to collect %sstats.\n"
481 "\t Consider tweaking"
482 " /proc/sys/kernel/perf_event_paranoid or running as root.",
Namhyung Kim20f946b2012-04-26 14:15:16 +0900483 target.system_wide ? "system-wide " : "");
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200484 } else {
485 error("open_counter returned with %d (%s). "
486 "/bin/dmesg may provide additional information.\n",
487 errno, strerror(errno));
488 }
489 if (child_pid != -1)
490 kill(child_pid, SIGTERM);
491 die("Not all events could be opened.\n");
492 return -1;
493 }
David Ahern2cee77c2011-05-30 08:55:59 -0600494 counter->supported = true;
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300495 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200496
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100497 if (perf_evlist__set_filters(evsel_list)) {
498 error("failed to set filter with %d (%s)\n", errno,
499 strerror(errno));
500 return -1;
501 }
502
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200503 /*
504 * Enable counters and exec the command:
505 */
506 t0 = rdclock();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200507
Liming Wang60666c62009-12-31 16:05:50 +0800508 if (forks) {
509 close(go_pipe[1]);
510 wait(&status);
Andi Kleen33e49ea2011-09-15 14:31:40 -0700511 if (WIFSIGNALED(status))
512 psignal(WTERMSIG(status), argv[0]);
Liming Wang60666c62009-12-31 16:05:50 +0800513 } else {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300514 while(!done) sleep(1);
Liming Wang60666c62009-12-31 16:05:50 +0800515 }
Ingo Molnar44db76c2009-06-03 19:36:07 +0200516
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200517 t1 = rdclock();
518
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200519 update_stats(&walltime_nsecs_stats, t1 - t0);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200520
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200521 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200522 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200523 read_counter(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200524 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200525 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200526 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200527 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200528 read_counter_aggr(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200529 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
530 evsel_list->threads->nr);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200531 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200532 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200533
Ingo Molnar42202dd2009-06-13 14:57:28 +0200534 return WEXITSTATUS(status);
535}
536
Ingo Molnarf99844c2011-04-27 05:35:39 +0200537static void print_noise_pct(double total, double avg)
538{
539 double pct = 0.0;
540
541 if (avg)
542 pct = 100.0*total/avg;
543
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700544 if (csv_output)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200545 fprintf(output, "%s%.2f%%", csv_sep, pct);
Jim Cromiea1bca6c2011-09-07 17:14:02 -0600546 else if (pct)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200547 fprintf(output, " ( +-%6.2f%% )", pct);
Ingo Molnarf99844c2011-04-27 05:35:39 +0200548}
549
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200550static void print_noise(struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200551{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200552 struct perf_stat *ps;
553
Peter Zijlstra849abde2009-09-04 18:23:38 +0200554 if (run_count == 1)
555 return;
556
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200557 ps = evsel->priv;
Ingo Molnarf99844c2011-04-27 05:35:39 +0200558 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200559}
560
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200561static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200562{
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200563 double msecs = avg / 1e6;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200564 char cpustr[16] = { '\0', };
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200565 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
Ingo Molnar42202dd2009-06-13 14:57:28 +0200566
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200567 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200568 sprintf(cpustr, "CPU%*d%s",
569 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200570 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200571
Stephane Eranian4aa90152011-08-15 22:22:33 +0200572 fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200573
Stephane Eranian023695d2011-02-14 11:20:01 +0200574 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200575 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200576
Stephane Eraniand7470b62010-12-01 18:49:05 +0200577 if (csv_output)
578 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200579
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200580 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Stephane Eranian4aa90152011-08-15 22:22:33 +0200581 fprintf(output, " # %8.3f CPUs utilized ",
582 avg / avg_stats(&walltime_nsecs_stats));
Namhyung Kim9dac6a22012-02-06 16:44:45 +0900583 else
584 fprintf(output, " ");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200585}
586
Namhyung Kim15e63922011-12-28 00:35:49 +0900587/* used for get_ratio_color() */
588enum grc_type {
589 GRC_STALLED_CYCLES_FE,
590 GRC_STALLED_CYCLES_BE,
591 GRC_CACHE_MISSES,
592 GRC_MAX_NR
593};
594
595static const char *get_ratio_color(enum grc_type type, double ratio)
596{
597 static const double grc_table[GRC_MAX_NR][3] = {
598 [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 },
599 [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 },
600 [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 },
601 };
602 const char *color = PERF_COLOR_NORMAL;
603
604 if (ratio > grc_table[type][0])
605 color = PERF_COLOR_RED;
606 else if (ratio > grc_table[type][1])
607 color = PERF_COLOR_MAGENTA;
608 else if (ratio > grc_table[type][2])
609 color = PERF_COLOR_YELLOW;
610
611 return color;
612}
613
Ingo Molnard3d1e862011-04-29 13:49:08 +0200614static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
615{
616 double total, ratio = 0.0;
617 const char *color;
618
619 total = avg_stats(&runtime_cycles_stats[cpu]);
620
621 if (total)
622 ratio = avg / total * 100.0;
623
Namhyung Kim15e63922011-12-28 00:35:49 +0900624 color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200625
Stephane Eranian4aa90152011-08-15 22:22:33 +0200626 fprintf(output, " # ");
627 color_fprintf(output, color, "%6.2f%%", ratio);
628 fprintf(output, " frontend cycles idle ");
Ingo Molnard3d1e862011-04-29 13:49:08 +0200629}
630
631static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200632{
633 double total, ratio = 0.0;
634 const char *color;
635
636 total = avg_stats(&runtime_cycles_stats[cpu]);
637
638 if (total)
639 ratio = avg / total * 100.0;
640
Namhyung Kim15e63922011-12-28 00:35:49 +0900641 color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
Ingo Molnara5d243d2011-04-27 05:39:24 +0200642
Stephane Eranian4aa90152011-08-15 22:22:33 +0200643 fprintf(output, " # ");
644 color_fprintf(output, color, "%6.2f%%", ratio);
645 fprintf(output, " backend cycles idle ");
Ingo Molnara5d243d2011-04-27 05:39:24 +0200646}
647
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200648static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
649{
650 double total, ratio = 0.0;
651 const char *color;
652
653 total = avg_stats(&runtime_branches_stats[cpu]);
654
655 if (total)
656 ratio = avg / total * 100.0;
657
Namhyung Kim15e63922011-12-28 00:35:49 +0900658 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200659
Stephane Eranian4aa90152011-08-15 22:22:33 +0200660 fprintf(output, " # ");
661 color_fprintf(output, color, "%6.2f%%", ratio);
662 fprintf(output, " of all branches ");
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200663}
664
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200665static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
666{
667 double total, ratio = 0.0;
668 const char *color;
669
670 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
671
672 if (total)
673 ratio = avg / total * 100.0;
674
Namhyung Kim15e63922011-12-28 00:35:49 +0900675 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200676
Stephane Eranian4aa90152011-08-15 22:22:33 +0200677 fprintf(output, " # ");
678 color_fprintf(output, color, "%6.2f%%", ratio);
679 fprintf(output, " of all L1-dcache hits ");
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200680}
681
Ingo Molnarc3305252011-05-19 14:01:42 +0200682static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
683{
684 double total, ratio = 0.0;
685 const char *color;
686
687 total = avg_stats(&runtime_l1_icache_stats[cpu]);
688
689 if (total)
690 ratio = avg / total * 100.0;
691
Namhyung Kim15e63922011-12-28 00:35:49 +0900692 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnarc3305252011-05-19 14:01:42 +0200693
Stephane Eranian4aa90152011-08-15 22:22:33 +0200694 fprintf(output, " # ");
695 color_fprintf(output, color, "%6.2f%%", ratio);
696 fprintf(output, " of all L1-icache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200697}
698
699static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
700{
701 double total, ratio = 0.0;
702 const char *color;
703
704 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
705
706 if (total)
707 ratio = avg / total * 100.0;
708
Namhyung Kim15e63922011-12-28 00:35:49 +0900709 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnarc3305252011-05-19 14:01:42 +0200710
Stephane Eranian4aa90152011-08-15 22:22:33 +0200711 fprintf(output, " # ");
712 color_fprintf(output, color, "%6.2f%%", ratio);
713 fprintf(output, " of all dTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200714}
715
716static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
717{
718 double total, ratio = 0.0;
719 const char *color;
720
721 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
722
723 if (total)
724 ratio = avg / total * 100.0;
725
Namhyung Kim15e63922011-12-28 00:35:49 +0900726 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnarc3305252011-05-19 14:01:42 +0200727
Stephane Eranian4aa90152011-08-15 22:22:33 +0200728 fprintf(output, " # ");
729 color_fprintf(output, color, "%6.2f%%", ratio);
730 fprintf(output, " of all iTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200731}
732
733static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
734{
735 double total, ratio = 0.0;
736 const char *color;
737
738 total = avg_stats(&runtime_ll_cache_stats[cpu]);
739
740 if (total)
741 ratio = avg / total * 100.0;
742
Namhyung Kim15e63922011-12-28 00:35:49 +0900743 color = get_ratio_color(GRC_CACHE_MISSES, ratio);
Ingo Molnarc3305252011-05-19 14:01:42 +0200744
Stephane Eranian4aa90152011-08-15 22:22:33 +0200745 fprintf(output, " # ");
746 color_fprintf(output, color, "%6.2f%%", ratio);
747 fprintf(output, " of all LL-cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200748}
749
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200750static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200751{
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200752 double total, ratio = 0.0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200753 char cpustr[16] = { '\0', };
Stephane Eraniand7470b62010-12-01 18:49:05 +0200754 const char *fmt;
755
756 if (csv_output)
757 fmt = "%s%.0f%s%s";
758 else if (big_num)
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200759 fmt = "%s%'18.0f%s%-25s";
Stephane Eraniand7470b62010-12-01 18:49:05 +0200760 else
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200761 fmt = "%s%18.0f%s%-25s";
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200762
763 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200764 sprintf(cpustr, "CPU%*d%s",
765 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200766 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200767 else
768 cpu = 0;
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200769
Stephane Eranian4aa90152011-08-15 22:22:33 +0200770 fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200771
Stephane Eranian023695d2011-02-14 11:20:01 +0200772 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200773 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200774
Stephane Eraniand7470b62010-12-01 18:49:05 +0200775 if (csv_output)
776 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200777
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200778 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200779 total = avg_stats(&runtime_cycles_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200780
781 if (total)
782 ratio = avg / total;
783
Stephane Eranian4aa90152011-08-15 22:22:33 +0200784 fprintf(output, " # %5.2f insns per cycle ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200785
Ingo Molnard3d1e862011-04-29 13:49:08 +0200786 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
787 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
Ingo Molnar481f9882011-04-27 04:34:16 +0200788
789 if (total && avg) {
790 ratio = total / avg;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200791 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200792 }
793
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200794 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200795 runtime_branches_stats[cpu].n != 0) {
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200796 print_branch_misses(cpu, evsel, avg);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200797 } else if (
798 evsel->attr.type == PERF_TYPE_HW_CACHE &&
799 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
800 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
801 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
Ingo Molnarc6264de2011-04-27 13:50:47 +0200802 runtime_l1_dcache_stats[cpu].n != 0) {
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200803 print_l1_dcache_misses(cpu, evsel, avg);
Ingo Molnarc3305252011-05-19 14:01:42 +0200804 } else if (
805 evsel->attr.type == PERF_TYPE_HW_CACHE &&
806 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
807 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
808 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
809 runtime_l1_icache_stats[cpu].n != 0) {
810 print_l1_icache_misses(cpu, evsel, avg);
811 } else if (
812 evsel->attr.type == PERF_TYPE_HW_CACHE &&
813 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
814 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
815 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
816 runtime_dtlb_cache_stats[cpu].n != 0) {
817 print_dtlb_cache_misses(cpu, evsel, avg);
818 } else if (
819 evsel->attr.type == PERF_TYPE_HW_CACHE &&
820 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
821 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
822 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
823 runtime_itlb_cache_stats[cpu].n != 0) {
824 print_itlb_cache_misses(cpu, evsel, avg);
825 } else if (
826 evsel->attr.type == PERF_TYPE_HW_CACHE &&
827 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
828 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
829 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
830 runtime_ll_cache_stats[cpu].n != 0) {
831 print_ll_cache_misses(cpu, evsel, avg);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200832 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
833 runtime_cacherefs_stats[cpu].n != 0) {
834 total = avg_stats(&runtime_cacherefs_stats[cpu]);
835
836 if (total)
837 ratio = avg * 100 / total;
838
Stephane Eranian4aa90152011-08-15 22:22:33 +0200839 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200840
Ingo Molnard3d1e862011-04-29 13:49:08 +0200841 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
842 print_stalled_cycles_frontend(cpu, evsel, avg);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200843 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
Ingo Molnard3d1e862011-04-29 13:49:08 +0200844 print_stalled_cycles_backend(cpu, evsel, avg);
Ingo Molnar481f9882011-04-27 04:34:16 +0200845 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
846 total = avg_stats(&runtime_nsecs_stats[cpu]);
847
848 if (total)
849 ratio = 1.0 * avg / total;
850
Stephane Eranian4aa90152011-08-15 22:22:33 +0200851 fprintf(output, " # %8.3f GHz ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200852 } else if (runtime_nsecs_stats[cpu].n != 0) {
Namhyung Kim5fde2522012-02-06 16:44:44 +0900853 char unit = 'M';
854
Ingo Molnar481f9882011-04-27 04:34:16 +0200855 total = avg_stats(&runtime_nsecs_stats[cpu]);
856
857 if (total)
858 ratio = 1000.0 * avg / total;
Namhyung Kim5fde2522012-02-06 16:44:44 +0900859 if (ratio < 0.001) {
860 ratio *= 1000;
861 unit = 'K';
862 }
Ingo Molnar481f9882011-04-27 04:34:16 +0200863
Namhyung Kim5fde2522012-02-06 16:44:44 +0900864 fprintf(output, " # %8.3f %c/sec ", ratio, unit);
Ingo Molnara5d243d2011-04-27 05:39:24 +0200865 } else {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200866 fprintf(output, " ");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200867 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200868}
869
870/*
871 * Print out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200872 * aggregated counts in system-wide mode
Ingo Molnar42202dd2009-06-13 14:57:28 +0200873 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200874static void print_counter_aggr(struct perf_evsel *counter)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200875{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200876 struct perf_stat *ps = counter->priv;
877 double avg = avg_stats(&ps->res_stats[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200878 int scaled = counter->counts->scaled;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200879
Ingo Molnar42202dd2009-06-13 14:57:28 +0200880 if (scaled == -1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200881 fprintf(output, "%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200882 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600883 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
Stephane Eranian023695d2011-02-14 11:20:01 +0200884 csv_sep,
885 csv_output ? 0 : -24,
886 event_name(counter));
887
888 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200889 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200890
Stephane Eranian4aa90152011-08-15 22:22:33 +0200891 fputc('\n', output);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200892 return;
893 }
894
895 if (nsec_counter(counter))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200896 nsec_printout(-1, counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200897 else
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200898 abs_printout(-1, counter, avg);
Peter Zijlstra849abde2009-09-04 18:23:38 +0200899
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700900 print_noise(counter, avg);
901
Stephane Eraniand7470b62010-12-01 18:49:05 +0200902 if (csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200903 fputc('\n', output);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200904 return;
905 }
906
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200907 if (scaled) {
908 double avg_enabled, avg_running;
909
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200910 avg_enabled = avg_stats(&ps->res_stats[1]);
911 avg_running = avg_stats(&ps->res_stats[2]);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200912
Stephane Eranian4aa90152011-08-15 22:22:33 +0200913 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200914 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200915 fprintf(output, "\n");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200916}
917
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200918/*
919 * Print out the results of a single counter:
920 * does not use aggregated count in system-wide
921 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200922static void print_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200923{
924 u64 ena, run, val;
925 int cpu;
926
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200927 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200928 val = counter->counts->cpu[cpu].val;
929 ena = counter->counts->cpu[cpu].ena;
930 run = counter->counts->cpu[cpu].run;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200931 if (run == 0 || ena == 0) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200932 fprintf(output, "CPU%*d%s%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200933 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200934 evsel_list->cpus->map[cpu], csv_sep,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200935 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600936 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
937 csv_sep,
Stephane Eranian023695d2011-02-14 11:20:01 +0200938 csv_output ? 0 : -24,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200939 event_name(counter));
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200940
Stephane Eranian023695d2011-02-14 11:20:01 +0200941 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200942 fprintf(output, "%s%s",
943 csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200944
Stephane Eranian4aa90152011-08-15 22:22:33 +0200945 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200946 continue;
947 }
948
949 if (nsec_counter(counter))
950 nsec_printout(cpu, counter, val);
951 else
952 abs_printout(cpu, counter, val);
953
Stephane Eraniand7470b62010-12-01 18:49:05 +0200954 if (!csv_output) {
955 print_noise(counter, 1.0);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200956
Ingo Molnarc6264de2011-04-27 13:50:47 +0200957 if (run != ena)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200958 fprintf(output, " (%.2f%%)",
959 100.0 * run / ena);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200960 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200961 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200962 }
963}
964
Ingo Molnar42202dd2009-06-13 14:57:28 +0200965static void print_stat(int argc, const char **argv)
966{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200967 struct perf_evsel *counter;
968 int i;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200969
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200970 fflush(stdout);
971
Stephane Eraniand7470b62010-12-01 18:49:05 +0200972 if (!csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200973 fprintf(output, "\n");
974 fprintf(output, " Performance counter stats for ");
Namhyung Kimd67356e2012-05-07 14:09:03 +0900975 if (perf_target__no_task(&target)) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200976 fprintf(output, "\'%s", argv[0]);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200977 for (i = 1; i < argc; i++)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200978 fprintf(output, " %s", argv[i]);
Namhyung Kim20f946b2012-04-26 14:15:16 +0900979 } else if (target.pid)
980 fprintf(output, "process id \'%s", target.pid);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200981 else
Namhyung Kim20f946b2012-04-26 14:15:16 +0900982 fprintf(output, "thread id \'%s", target.tid);
Ingo Molnar44db76c2009-06-03 19:36:07 +0200983
Stephane Eranian4aa90152011-08-15 22:22:33 +0200984 fprintf(output, "\'");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200985 if (run_count > 1)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200986 fprintf(output, " (%d runs)", run_count);
987 fprintf(output, ":\n\n");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200988 }
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200989
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200990 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200991 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200992 print_counter(counter);
993 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200994 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200995 print_counter_aggr(counter);
996 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200997
Stephane Eraniand7470b62010-12-01 18:49:05 +0200998 if (!csv_output) {
Ingo Molnarc3305252011-05-19 14:01:42 +0200999 if (!null_run)
Stephane Eranian4aa90152011-08-15 22:22:33 +02001000 fprintf(output, "\n");
1001 fprintf(output, " %17.9f seconds time elapsed",
Stephane Eraniand7470b62010-12-01 18:49:05 +02001002 avg_stats(&walltime_nsecs_stats)/1e9);
1003 if (run_count > 1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +02001004 fprintf(output, " ");
Ingo Molnarf99844c2011-04-27 05:35:39 +02001005 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1006 avg_stats(&walltime_nsecs_stats));
Stephane Eraniand7470b62010-12-01 18:49:05 +02001007 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001008 fprintf(output, "\n\n");
Ingo Molnar566747e2009-06-27 06:24:32 +02001009 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001010}
1011
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001012static volatile int signr = -1;
1013
Ingo Molnar52425192009-05-26 09:17:18 +02001014static void skip_signal(int signo)
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001015{
Zhang, Yanmin6be28502010-03-18 11:36:03 -03001016 if(child_pid == -1)
Liming Wang60666c62009-12-31 16:05:50 +08001017 done = 1;
1018
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001019 signr = signo;
1020}
1021
1022static void sig_atexit(void)
1023{
Chris Wilson933da832009-10-04 01:35:01 +01001024 if (child_pid != -1)
1025 kill(child_pid, SIGTERM);
1026
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001027 if (signr == -1)
1028 return;
1029
1030 signal(signr, SIG_DFL);
1031 kill(getpid(), signr);
Ingo Molnar52425192009-05-26 09:17:18 +02001032}
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001033
Ingo Molnar52425192009-05-26 09:17:18 +02001034static const char * const stat_usage[] = {
Liming Wang60666c62009-12-31 16:05:50 +08001035 "perf stat [<options>] [<command>]",
Ingo Molnar52425192009-05-26 09:17:18 +02001036 NULL
1037};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001038
Stephane Eraniand7470b62010-12-01 18:49:05 +02001039static int stat__set_big_num(const struct option *opt __used,
1040 const char *s __used, int unset)
1041{
1042 big_num_opt = unset ? 0 : 1;
1043 return 0;
1044}
1045
Stephane Eranian4aa90152011-08-15 22:22:33 +02001046static bool append_file;
1047
Ingo Molnar52425192009-05-26 09:17:18 +02001048static const struct option options[] = {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001049 OPT_CALLBACK('e', "event", &evsel_list, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001050 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001051 parse_events_option),
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +01001052 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1053 "event filter", parse_filter),
Stephane Eranian2e6cdf92010-05-12 10:40:01 +02001054 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1055 "child tasks do not inherit counters"),
Namhyung Kim20f946b2012-04-26 14:15:16 +09001056 OPT_STRING('p', "pid", &target.pid, "pid",
David Ahernb52956c2012-02-08 09:32:52 -07001057 "stat events on existing process id"),
Namhyung Kim20f946b2012-04-26 14:15:16 +09001058 OPT_STRING('t', "tid", &target.tid, "tid",
David Ahernb52956c2012-02-08 09:32:52 -07001059 "stat events on existing thread id"),
Namhyung Kim20f946b2012-04-26 14:15:16 +09001060 OPT_BOOLEAN('a', "all-cpus", &target.system_wide,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301061 "system-wide collection from all CPUs"),
Lin Ming43bece72011-08-17 18:42:07 +08001062 OPT_BOOLEAN('g', "group", &group,
1063 "put the counters into a counter group"),
Brice Goglinb26bc5a2009-08-07 10:18:39 +02001064 OPT_BOOLEAN('c', "scale", &scale,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301065 "scale/normalize counters"),
Ian Munsiec0555642010-04-13 18:37:33 +10001066 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar743ee1f2009-06-07 17:06:46 +02001067 "be more verbose (show counter open errors, etc)"),
Ingo Molnar42202dd2009-06-13 14:57:28 +02001068 OPT_INTEGER('r', "repeat", &run_count,
1069 "repeat command and print average + stddev (max: 100)"),
Ingo Molnar0cfb7a12009-06-27 06:10:30 +02001070 OPT_BOOLEAN('n', "null", &null_run,
1071 "null run - dont start any counters"),
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001072 OPT_INCR('d', "detailed", &detailed_run,
Ingo Molnarc6264de2011-04-27 13:50:47 +02001073 "detailed run - start a lot of events"),
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001074 OPT_BOOLEAN('S', "sync", &sync_run,
1075 "call sync() before starting a run"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001076 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1077 "print large numbers with thousands\' separators",
1078 stat__set_big_num),
Namhyung Kim20f946b2012-04-26 14:15:16 +09001079 OPT_STRING('C', "cpu", &target.cpu_list, "cpu",
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001080 "list of cpus to monitor in system-wide"),
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001081 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
1082 "disable CPU count aggregation"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001083 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1084 "print counts with custom separator"),
Stephane Eranian023695d2011-02-14 11:20:01 +02001085 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1086 "monitor event in cgroup name only",
1087 parse_cgroups),
Stephane Eranian4aa90152011-08-15 22:22:33 +02001088 OPT_STRING('o', "output", &output_name, "file",
1089 "output file name"),
1090 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
Jim Cromie56f3bae2011-09-07 17:14:00 -06001091 OPT_INTEGER(0, "log-fd", &output_fd,
1092 "log output to fd, instead of stderr"),
Ingo Molnar52425192009-05-26 09:17:18 +02001093 OPT_END()
1094};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001095
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001096/*
1097 * Add default attributes, if there were no attributes specified or
1098 * if -d/--detailed, -d -d or -d -d -d is used:
1099 */
1100static int add_default_attributes(void)
1101{
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001102 /* Set attrs if no event is selected and !null_run: */
1103 if (null_run)
1104 return 0;
1105
1106 if (!evsel_list->nr_entries) {
Arnaldo Carvalho de Melo50d08e42011-11-04 09:10:59 -02001107 if (perf_evlist__add_attrs_array(evsel_list, default_attrs) < 0)
1108 return -1;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001109 }
1110
1111 /* Detailed events get appended to the event list: */
1112
1113 if (detailed_run < 1)
1114 return 0;
1115
1116 /* Append detailed run extra attributes: */
Arnaldo Carvalho de Melo50d08e42011-11-04 09:10:59 -02001117 if (perf_evlist__add_attrs_array(evsel_list, detailed_attrs) < 0)
1118 return -1;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001119
1120 if (detailed_run < 2)
1121 return 0;
1122
1123 /* Append very detailed run extra attributes: */
Arnaldo Carvalho de Melo50d08e42011-11-04 09:10:59 -02001124 if (perf_evlist__add_attrs_array(evsel_list, very_detailed_attrs) < 0)
1125 return -1;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001126
1127 if (detailed_run < 3)
1128 return 0;
1129
1130 /* Append very, very detailed run extra attributes: */
Arnaldo Carvalho de Melo50d08e42011-11-04 09:10:59 -02001131 return perf_evlist__add_attrs_array(evsel_list, very_very_detailed_attrs);
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001132}
1133
Ingo Molnarf37a2912009-07-01 12:37:06 +02001134int cmd_stat(int argc, const char **argv, const char *prefix __used)
Ingo Molnar52425192009-05-26 09:17:18 +02001135{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001136 struct perf_evsel *pos;
1137 int status = -ENOMEM;
Stephane Eranian4aa90152011-08-15 22:22:33 +02001138 const char *mode;
Ingo Molnar42202dd2009-06-13 14:57:28 +02001139
Stephane Eranian5af52b52010-05-18 15:00:01 +02001140 setlocale(LC_ALL, "");
1141
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001142 evsel_list = perf_evlist__new(NULL, NULL);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001143 if (evsel_list == NULL)
1144 return -ENOMEM;
1145
Anton Blancharda0541232009-07-22 23:04:12 +10001146 argc = parse_options(argc, argv, options, stat_usage,
1147 PARSE_OPT_STOP_AT_NON_OPTION);
Stephane Eraniand7470b62010-12-01 18:49:05 +02001148
Stephane Eranian4aa90152011-08-15 22:22:33 +02001149 output = stderr;
1150 if (output_name && strcmp(output_name, "-"))
1151 output = NULL;
1152
Jim Cromie56f3bae2011-09-07 17:14:00 -06001153 if (output_name && output_fd) {
1154 fprintf(stderr, "cannot use both --output and --log-fd\n");
1155 usage_with_options(stat_usage, options);
1156 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001157 if (!output) {
1158 struct timespec tm;
1159 mode = append_file ? "a" : "w";
1160
1161 output = fopen(output_name, mode);
1162 if (!output) {
1163 perror("failed to create output file");
1164 exit(-1);
1165 }
1166 clock_gettime(CLOCK_REALTIME, &tm);
1167 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
Jim Cromie56f3bae2011-09-07 17:14:00 -06001168 } else if (output_fd != 2) {
1169 mode = append_file ? "a" : "w";
1170 output = fdopen(output_fd, mode);
1171 if (!output) {
1172 perror("Failed opening logfd");
1173 return -errno;
1174 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001175 }
1176
Jim Cromied4ffd042011-09-07 17:14:03 -06001177 if (csv_sep) {
Stephane Eraniand7470b62010-12-01 18:49:05 +02001178 csv_output = true;
Jim Cromied4ffd042011-09-07 17:14:03 -06001179 if (!strcmp(csv_sep, "\\t"))
1180 csv_sep = "\t";
1181 } else
Stephane Eraniand7470b62010-12-01 18:49:05 +02001182 csv_sep = DEFAULT_SEPARATOR;
1183
1184 /*
1185 * let the spreadsheet do the pretty-printing
1186 */
1187 if (csv_output) {
Jim Cromie61a9f322011-09-07 17:14:04 -06001188 /* User explicitly passed -B? */
Stephane Eraniand7470b62010-12-01 18:49:05 +02001189 if (big_num_opt == 1) {
1190 fprintf(stderr, "-B option not supported with -x\n");
1191 usage_with_options(stat_usage, options);
1192 } else /* Nope, so disable big number formatting */
1193 big_num = false;
1194 } else if (big_num_opt == 0) /* User passed --no-big-num */
1195 big_num = false;
1196
Namhyung Kimd67356e2012-05-07 14:09:03 +09001197 if (!argc && perf_target__no_task(&target))
Ingo Molnar52425192009-05-26 09:17:18 +02001198 usage_with_options(stat_usage, options);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +02001199 if (run_count <= 0)
Ingo Molnar42202dd2009-06-13 14:57:28 +02001200 usage_with_options(stat_usage, options);
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001201
Stephane Eranian023695d2011-02-14 11:20:01 +02001202 /* no_aggr, cgroup are for system-wide only */
Namhyung Kimd67356e2012-05-07 14:09:03 +09001203 if ((no_aggr || nr_cgroups) && perf_target__no_cpu(&target)) {
Stephane Eranian023695d2011-02-14 11:20:01 +02001204 fprintf(stderr, "both cgroup and no-aggregation "
1205 "modes only available in system-wide mode\n");
1206
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001207 usage_with_options(stat_usage, options);
Stephane Eranian023695d2011-02-14 11:20:01 +02001208 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001209
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001210 if (add_default_attributes())
1211 goto out;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001212
Namhyung Kim4bd0f2d2012-04-26 14:15:18 +09001213 perf_target__validate(&target);
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001214
Namhyung Kim77a6f012012-05-07 14:09:04 +09001215 if (perf_evlist__create_maps(evsel_list, &target) < 0) {
1216 if (!perf_target__no_task(&target))
1217 pr_err("Problems finding threads of monitor\n");
1218 if (!perf_target__no_cpu(&target))
1219 perror("failed to parse CPUs map");
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001220
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001221 usage_with_options(stat_usage, options);
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001222 return -1;
1223 }
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001224
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001225 list_for_each_entry(pos, &evsel_list->entries, node) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -02001226 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
Arnaldo Carvalho de Melo806fb632011-11-29 08:05:52 -02001227 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001228 goto out_free_fd;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001229 }
1230
Ingo Molnar58d7e992009-05-15 11:03:23 +02001231 /*
1232 * We dont want to block the signals - that would cause
1233 * child tasks to inherit that and Ctrl-C would not work.
1234 * What we want is for Ctrl-C to work in the exec()-ed
1235 * task, but being ignored by perf stat itself:
1236 */
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001237 atexit(sig_atexit);
Ingo Molnar58d7e992009-05-15 11:03:23 +02001238 signal(SIGINT, skip_signal);
1239 signal(SIGALRM, skip_signal);
1240 signal(SIGABRT, skip_signal);
1241
Ingo Molnar42202dd2009-06-13 14:57:28 +02001242 status = 0;
1243 for (run_idx = 0; run_idx < run_count; run_idx++) {
1244 if (run_count != 1 && verbose)
Stephane Eranian4aa90152011-08-15 22:22:33 +02001245 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1246 run_idx + 1);
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001247
1248 if (sync_run)
1249 sync();
1250
Ingo Molnar42202dd2009-06-13 14:57:28 +02001251 status = run_perf_stat(argc, argv);
1252 }
1253
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -03001254 if (status != -1)
1255 print_stat(argc, argv);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001256out_free_fd:
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001257 list_for_each_entry(pos, &evsel_list->entries, node)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001258 perf_evsel__free_stat_priv(pos);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001259 perf_evlist__delete_maps(evsel_list);
Arnaldo Carvalho de Melo0015e2e2011-02-01 16:18:10 -02001260out:
1261 perf_evlist__delete(evsel_list);
Ingo Molnar42202dd2009-06-13 14:57:28 +02001262 return status;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001263}