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Ingo Molnarddcacfa2009-04-20 15:37:32 +02001/*
Ingo Molnarbf9e1872009-06-02 23:37:05 +02002 * builtin-stat.c
3 *
4 * Builtin stat command: Give a precise performance counters summary
5 * overview about any workload, CPU or specific PID.
6 *
7 * Sample output:
Ingo Molnarddcacfa2009-04-20 15:37:32 +02008
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02009 $ perf stat ./hackbench 10
Ingo Molnarddcacfa2009-04-20 15:37:32 +020010
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020011 Time: 0.118
Ingo Molnarddcacfa2009-04-20 15:37:32 +020012
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020013 Performance counter stats for './hackbench 10':
Ingo Molnarddcacfa2009-04-20 15:37:32 +020014
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020015 1708.761321 task-clock # 11.037 CPUs utilized
16 41,190 context-switches # 0.024 M/sec
17 6,735 CPU-migrations # 0.004 M/sec
18 17,318 page-faults # 0.010 M/sec
19 5,205,202,243 cycles # 3.046 GHz
20 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
21 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
22 2,603,501,247 instructions # 0.50 insns per cycle
23 # 1.48 stalled cycles per insn
24 484,357,498 branches # 283.455 M/sec
25 6,388,934 branch-misses # 1.32% of all branches
26
27 0.154822978 seconds time elapsed
Ingo Molnarddcacfa2009-04-20 15:37:32 +020028
Ingo Molnar52425192009-05-26 09:17:18 +020029 *
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020030 * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
Ingo Molnar52425192009-05-26 09:17:18 +020031 *
32 * Improvements and fixes by:
33 *
34 * Arjan van de Ven <arjan@linux.intel.com>
35 * Yanmin Zhang <yanmin.zhang@intel.com>
36 * Wu Fengguang <fengguang.wu@intel.com>
37 * Mike Galbraith <efault@gmx.de>
38 * Paul Mackerras <paulus@samba.org>
Jaswinder Singh Rajput6e750a8f2009-06-27 03:02:07 +053039 * Jaswinder Singh Rajput <jaswinder@kernel.org>
Ingo Molnar52425192009-05-26 09:17:18 +020040 *
41 * Released under the GPL v2. (and only v2, not any later version)
Ingo Molnarddcacfa2009-04-20 15:37:32 +020042 */
43
Peter Zijlstra1a482f32009-05-23 18:28:58 +020044#include "perf.h"
Ingo Molnar16f762a2009-05-27 09:10:38 +020045#include "builtin.h"
Ingo Molnar148be2c2009-04-27 08:02:14 +020046#include "util/util.h"
Ingo Molnar52425192009-05-26 09:17:18 +020047#include "util/parse-options.h"
48#include "util/parse-events.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020049#include "util/event.h"
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020050#include "util/evlist.h"
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -020051#include "util/evsel.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020052#include "util/debug.h"
Ingo Molnara5d243d2011-04-27 05:39:24 +020053#include "util/color.h"
Liming Wang60666c62009-12-31 16:05:50 +080054#include "util/header.h"
Paul Mackerrasa12b51c2010-03-10 20:36:09 +110055#include "util/cpumap.h"
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030056#include "util/thread.h"
Arnaldo Carvalho de Melofd782602011-01-18 15:15:24 -020057#include "util/thread_map.h"
Ingo Molnarddcacfa2009-04-20 15:37:32 +020058
Ingo Molnarddcacfa2009-04-20 15:37:32 +020059#include <sys/prctl.h>
Ingo Molnar42202dd2009-06-13 14:57:28 +020060#include <math.h>
Stephane Eranian5af52b52010-05-18 15:00:01 +020061#include <locale.h>
Peter Zijlstra16c8a102009-05-05 17:50:27 +020062
Stephane Eraniand7470b62010-12-01 18:49:05 +020063#define DEFAULT_SEPARATOR " "
David Ahern2cee77c2011-05-30 08:55:59 -060064#define CNTR_NOT_SUPPORTED "<not supported>"
65#define CNTR_NOT_COUNTED "<not counted>"
Stephane Eraniand7470b62010-12-01 18:49:05 +020066
Ingo Molnarcdd6c482009-09-21 12:02:48 +020067static struct perf_event_attr default_attrs[] = {
Ingo Molnara21ca2c2009-06-06 09:58:57 +020068
Ingo Molnar56aab462009-10-19 13:27:08 +020069 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
70 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
71 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
72 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
Ingo Molnara21ca2c2009-06-06 09:58:57 +020073
Ingo Molnar56aab462009-10-19 13:27:08 +020074 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
Ingo Molnar129c04c2011-04-29 14:41:28 +020075 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
76 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
Ingo Molnar56aab462009-10-19 13:27:08 +020077 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
Ingo Molnar56aab462009-10-19 13:27:08 +020078 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
79 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
Peter Zijlstraf4dbfa82009-06-11 14:06:28 +020080
Ingo Molnara21ca2c2009-06-06 09:58:57 +020081};
82
Ingo Molnarc6264de2011-04-27 13:50:47 +020083/*
Ingo Molnar2cba3ff2011-05-19 13:30:56 +020084 * Detailed stats (-d), covering the L1 and last level data caches:
Ingo Molnarc6264de2011-04-27 13:50:47 +020085 */
86static struct perf_event_attr detailed_attrs[] = {
87
Ingo Molnarc6264de2011-04-27 13:50:47 +020088 { .type = PERF_TYPE_HW_CACHE,
89 .config =
90 PERF_COUNT_HW_CACHE_L1D << 0 |
91 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
92 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
93
94 { .type = PERF_TYPE_HW_CACHE,
95 .config =
96 PERF_COUNT_HW_CACHE_L1D << 0 |
97 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
98 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
99
100 { .type = PERF_TYPE_HW_CACHE,
101 .config =
102 PERF_COUNT_HW_CACHE_LL << 0 |
103 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
104 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
105
106 { .type = PERF_TYPE_HW_CACHE,
107 .config =
108 PERF_COUNT_HW_CACHE_LL << 0 |
109 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
110 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
111};
112
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200113/*
114 * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
115 */
116static struct perf_event_attr very_detailed_attrs[] = {
117
118 { .type = PERF_TYPE_HW_CACHE,
119 .config =
120 PERF_COUNT_HW_CACHE_L1I << 0 |
121 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
122 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
123
124 { .type = PERF_TYPE_HW_CACHE,
125 .config =
126 PERF_COUNT_HW_CACHE_L1I << 0 |
127 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
128 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
129
130 { .type = PERF_TYPE_HW_CACHE,
131 .config =
132 PERF_COUNT_HW_CACHE_DTLB << 0 |
133 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
134 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
135
136 { .type = PERF_TYPE_HW_CACHE,
137 .config =
138 PERF_COUNT_HW_CACHE_DTLB << 0 |
139 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
140 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
141
142 { .type = PERF_TYPE_HW_CACHE,
143 .config =
144 PERF_COUNT_HW_CACHE_ITLB << 0 |
145 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
146 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
147
148 { .type = PERF_TYPE_HW_CACHE,
149 .config =
150 PERF_COUNT_HW_CACHE_ITLB << 0 |
151 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
152 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
153
154};
155
156/*
157 * Very, very detailed stats (-d -d -d), adding prefetch events:
158 */
159static struct perf_event_attr very_very_detailed_attrs[] = {
160
161 { .type = PERF_TYPE_HW_CACHE,
162 .config =
163 PERF_COUNT_HW_CACHE_L1D << 0 |
164 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
165 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
166
167 { .type = PERF_TYPE_HW_CACHE,
168 .config =
169 PERF_COUNT_HW_CACHE_L1D << 0 |
170 (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
171 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
172};
173
174
175
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200176struct perf_evlist *evsel_list;
177
Ian Munsiec0555642010-04-13 18:37:33 +1000178static bool system_wide = false;
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530179static int run_idx = 0;
180
181static int run_count = 1;
Stephane Eranian2e6cdf92010-05-12 10:40:01 +0200182static bool no_inherit = false;
Ian Munsiec0555642010-04-13 18:37:33 +1000183static bool scale = true;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200184static bool no_aggr = false;
Chris Wilson933da832009-10-04 01:35:01 +0100185static pid_t target_pid = -1;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300186static pid_t target_tid = -1;
Chris Wilson933da832009-10-04 01:35:01 +0100187static pid_t child_pid = -1;
Ian Munsiec0555642010-04-13 18:37:33 +1000188static bool null_run = false;
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200189static int detailed_run = 0;
Ingo Molnarf9cef0a2011-04-28 18:17:11 +0200190static bool sync_run = false;
Arnaldo Carvalho de Melo201e0b02010-12-01 17:53:27 -0200191static bool big_num = true;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200192static int big_num_opt = -1;
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200193static const char *cpu_list;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200194static const char *csv_sep = NULL;
195static bool csv_output = false;
Lin Ming43bece72011-08-17 18:42:07 +0800196static bool group = false;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200197static const char *output_name = NULL;
198static FILE *output = NULL;
Jim Cromie56f3bae2011-09-07 17:14:00 -0600199static int output_fd;
Stephane Eranian5af52b52010-05-18 15:00:01 +0200200
Liming Wang60666c62009-12-31 16:05:50 +0800201static volatile int done = 0;
202
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200203struct stats
204{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200205 double n, mean, M2;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200206};
Ingo Molnar42202dd2009-06-13 14:57:28 +0200207
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200208struct perf_stat {
209 struct stats res_stats[3];
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200210};
211
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200212static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200213{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200214 evsel->priv = zalloc(sizeof(struct perf_stat));
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200215 return evsel->priv == NULL ? -ENOMEM : 0;
216}
217
218static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
219{
220 free(evsel->priv);
221 evsel->priv = NULL;
222}
223
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200224static void update_stats(struct stats *stats, u64 val)
225{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200226 double delta;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200227
Peter Zijlstra8a026312009-09-04 17:26:26 +0200228 stats->n++;
229 delta = val - stats->mean;
230 stats->mean += delta / stats->n;
231 stats->M2 += delta*(val - stats->mean);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200232}
233
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200234static double avg_stats(struct stats *stats)
235{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200236 return stats->mean;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200237}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200238
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200239/*
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200240 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
241 *
Peter Zijlstra8a026312009-09-04 17:26:26 +0200242 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
243 * s^2 = -------------------------------
244 * n - 1
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200245 *
246 * http://en.wikipedia.org/wiki/Stddev
247 *
248 * The std dev of the mean is related to the std dev by:
249 *
250 * s
251 * s_mean = -------
252 * sqrt(n)
253 *
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200254 */
255static double stddev_stats(struct stats *stats)
256{
Jim Cromie19f47402011-09-07 17:14:01 -0600257 double variance, variance_mean;
258
259 if (!stats->n)
260 return 0.0;
261
262 variance = stats->M2 / (stats->n - 1);
263 variance_mean = variance / stats->n;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200264
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200265 return sqrt(variance_mean);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200266}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200267
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200268struct stats runtime_nsecs_stats[MAX_NR_CPUS];
269struct stats runtime_cycles_stats[MAX_NR_CPUS];
Ingo Molnard3d1e862011-04-29 13:49:08 +0200270struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
271struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200272struct stats runtime_branches_stats[MAX_NR_CPUS];
Ingo Molnard58f4c82011-04-27 03:42:18 +0200273struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200274struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
Ingo Molnarc3305252011-05-19 14:01:42 +0200275struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
276struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
277struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
278struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200279struct stats walltime_nsecs_stats;
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200280
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200281static int create_perf_stat_counter(struct perf_evsel *evsel,
282 struct perf_evsel *first)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200283{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200284 struct perf_event_attr *attr = &evsel->attr;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200285 struct xyarray *group_fd = NULL;
286
287 if (group && evsel != first)
288 group_fd = first->fd;
Peter Zijlstra16c8a102009-05-05 17:50:27 +0200289
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200290 if (scale)
Ingo Molnara21ca2c2009-06-06 09:58:57 +0200291 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
292 PERF_FORMAT_TOTAL_TIME_RUNNING;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200293
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200294 attr->inherit = !no_inherit;
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300295
296 if (system_wide)
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200297 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
298 group, group_fd);
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200299 if (target_pid == -1 && target_tid == -1) {
300 attr->disabled = 1;
301 attr->enable_on_exec = 1;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200302 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300303
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200304 return perf_evsel__open_per_thread(evsel, evsel_list->threads,
305 group, group_fd);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200306}
307
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200308/*
309 * Does the counter have nsecs as a unit?
310 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200311static inline int nsec_counter(struct perf_evsel *evsel)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200312{
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200313 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
314 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200315 return 1;
316
317 return 0;
318}
319
320/*
Ingo Molnardcd99362011-04-27 04:36:37 +0200321 * Update various tracking values we maintain to print
322 * more semantic information such as miss/hit ratios,
323 * instruction rates, etc:
324 */
325static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
326{
327 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
328 update_stats(&runtime_nsecs_stats[0], count[0]);
329 else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
330 update_stats(&runtime_cycles_stats[0], count[0]);
Ingo Molnard3d1e862011-04-29 13:49:08 +0200331 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
332 update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200333 else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
Ingo Molnard3d1e862011-04-29 13:49:08 +0200334 update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200335 else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
336 update_stats(&runtime_branches_stats[0], count[0]);
337 else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
338 update_stats(&runtime_cacherefs_stats[0], count[0]);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200339 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
340 update_stats(&runtime_l1_dcache_stats[0], count[0]);
Ingo Molnarc3305252011-05-19 14:01:42 +0200341 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
342 update_stats(&runtime_l1_icache_stats[0], count[0]);
343 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
344 update_stats(&runtime_ll_cache_stats[0], count[0]);
345 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
346 update_stats(&runtime_dtlb_cache_stats[0], count[0]);
347 else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
348 update_stats(&runtime_itlb_cache_stats[0], count[0]);
Ingo Molnardcd99362011-04-27 04:36:37 +0200349}
350
351/*
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200352 * Read out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200353 * aggregate counts across CPUs in system-wide mode
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200354 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200355static int read_counter_aggr(struct perf_evsel *counter)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200356{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200357 struct perf_stat *ps = counter->priv;
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200358 u64 *count = counter->counts->aggr.values;
359 int i;
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200360
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200361 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
362 evsel_list->threads->nr, scale) < 0)
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200363 return -1;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200364
365 for (i = 0; i < 3; i++)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200366 update_stats(&ps->res_stats[i], count[i]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200367
368 if (verbose) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200369 fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200370 event_name(counter), count[0], count[1], count[2]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200371 }
372
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200373 /*
374 * Save the full runtime - to allow normalization during printout:
375 */
Ingo Molnardcd99362011-04-27 04:36:37 +0200376 update_shadow_stats(counter, count);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200377
378 return 0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200379}
380
381/*
382 * Read out the results of a single counter:
383 * do not aggregate counts across CPUs in system-wide mode
384 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200385static int read_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200386{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200387 u64 *count;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200388 int cpu;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200389
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200390 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200391 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
392 return -1;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200393
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200394 count = counter->counts->cpu[cpu].values;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200395
Ingo Molnardcd99362011-04-27 04:36:37 +0200396 update_shadow_stats(counter, count);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200397 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200398
399 return 0;
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200400}
401
Ingo Molnarf37a2912009-07-01 12:37:06 +0200402static int run_perf_stat(int argc __used, const char **argv)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200403{
404 unsigned long long t0, t1;
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200405 struct perf_evsel *counter, *first;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200406 int status = 0;
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000407 int child_ready_pipe[2], go_pipe[2];
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300408 const bool forks = (argc > 0);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000409 char buf;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200410
Liming Wang60666c62009-12-31 16:05:50 +0800411 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000412 perror("failed to create pipes");
413 exit(1);
414 }
415
Liming Wang60666c62009-12-31 16:05:50 +0800416 if (forks) {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300417 if ((child_pid = fork()) < 0)
Liming Wang60666c62009-12-31 16:05:50 +0800418 perror("failed to fork");
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000419
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300420 if (!child_pid) {
Liming Wang60666c62009-12-31 16:05:50 +0800421 close(child_ready_pipe[0]);
422 close(go_pipe[1]);
423 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
424
425 /*
426 * Do a dummy execvp to get the PLT entry resolved,
427 * so we avoid the resolver overhead on the real
428 * execvp call.
429 */
430 execvp("", (char **)argv);
431
432 /*
433 * Tell the parent we're ready to go
434 */
435 close(child_ready_pipe[1]);
436
437 /*
438 * Wait until the parent tells us to go.
439 */
440 if (read(go_pipe[0], &buf, 1) == -1)
441 perror("unable to read pipe");
442
443 execvp(argv[0], (char **)argv);
444
445 perror(argv[0]);
446 exit(-1);
447 }
448
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300449 if (target_tid == -1 && target_pid == -1 && !system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200450 evsel_list->threads->map[0] = child_pid;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300451
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000452 /*
Liming Wang60666c62009-12-31 16:05:50 +0800453 * Wait for the child to be ready to exec.
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000454 */
455 close(child_ready_pipe[1]);
Liming Wang60666c62009-12-31 16:05:50 +0800456 close(go_pipe[0]);
457 if (read(child_ready_pipe[0], &buf, 1) == -1)
Frederic Weisbeckera92bef02009-07-01 21:02:10 +0200458 perror("unable to read pipe");
Liming Wang60666c62009-12-31 16:05:50 +0800459 close(child_ready_pipe[0]);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000460 }
461
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200462 first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
463
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200464 list_for_each_entry(counter, &evsel_list->entries, node) {
Arnaldo Carvalho de Melo727ab042011-10-25 10:42:19 -0200465 if (create_perf_stat_counter(counter, first) < 0) {
David Ahernc63ca0c2011-04-29 16:04:15 -0600466 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) {
467 if (verbose)
468 ui__warning("%s event is not supported by the kernel.\n",
469 event_name(counter));
David Ahern2cee77c2011-05-30 08:55:59 -0600470 counter->supported = false;
Ingo Molnarede70292011-04-28 08:48:42 +0200471 continue;
David Ahernc63ca0c2011-04-29 16:04:15 -0600472 }
Ingo Molnarede70292011-04-28 08:48:42 +0200473
474 if (errno == EPERM || errno == EACCES) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200475 error("You may not have permission to collect %sstats.\n"
476 "\t Consider tweaking"
477 " /proc/sys/kernel/perf_event_paranoid or running as root.",
478 system_wide ? "system-wide " : "");
479 } else {
480 error("open_counter returned with %d (%s). "
481 "/bin/dmesg may provide additional information.\n",
482 errno, strerror(errno));
483 }
484 if (child_pid != -1)
485 kill(child_pid, SIGTERM);
486 die("Not all events could be opened.\n");
487 return -1;
488 }
David Ahern2cee77c2011-05-30 08:55:59 -0600489 counter->supported = true;
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300490 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200491
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100492 if (perf_evlist__set_filters(evsel_list)) {
493 error("failed to set filter with %d (%s)\n", errno,
494 strerror(errno));
495 return -1;
496 }
497
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200498 /*
499 * Enable counters and exec the command:
500 */
501 t0 = rdclock();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200502
Liming Wang60666c62009-12-31 16:05:50 +0800503 if (forks) {
504 close(go_pipe[1]);
505 wait(&status);
Andi Kleen33e49ea2011-09-15 14:31:40 -0700506 if (WIFSIGNALED(status))
507 psignal(WTERMSIG(status), argv[0]);
Liming Wang60666c62009-12-31 16:05:50 +0800508 } else {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300509 while(!done) sleep(1);
Liming Wang60666c62009-12-31 16:05:50 +0800510 }
Ingo Molnar44db76c2009-06-03 19:36:07 +0200511
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200512 t1 = rdclock();
513
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200514 update_stats(&walltime_nsecs_stats, t1 - t0);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200515
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200516 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200517 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200518 read_counter(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200519 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200520 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200521 } else {
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_aggr(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200524 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
525 evsel_list->threads->nr);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200526 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200527 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200528
Ingo Molnar42202dd2009-06-13 14:57:28 +0200529 return WEXITSTATUS(status);
530}
531
Ingo Molnarf99844c2011-04-27 05:35:39 +0200532static void print_noise_pct(double total, double avg)
533{
534 double pct = 0.0;
535
536 if (avg)
537 pct = 100.0*total/avg;
538
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700539 if (csv_output)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200540 fprintf(output, "%s%.2f%%", csv_sep, pct);
Jim Cromiea1bca6c2011-09-07 17:14:02 -0600541 else if (pct)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200542 fprintf(output, " ( +-%6.2f%% )", pct);
Ingo Molnarf99844c2011-04-27 05:35:39 +0200543}
544
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200545static void print_noise(struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200546{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200547 struct perf_stat *ps;
548
Peter Zijlstra849abde2009-09-04 18:23:38 +0200549 if (run_count == 1)
550 return;
551
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200552 ps = evsel->priv;
Ingo Molnarf99844c2011-04-27 05:35:39 +0200553 print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200554}
555
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200556static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200557{
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200558 double msecs = avg / 1e6;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200559 char cpustr[16] = { '\0', };
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200560 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
Ingo Molnar42202dd2009-06-13 14:57:28 +0200561
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200562 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200563 sprintf(cpustr, "CPU%*d%s",
564 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200565 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200566
Stephane Eranian4aa90152011-08-15 22:22:33 +0200567 fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200568
Stephane Eranian023695d2011-02-14 11:20:01 +0200569 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200570 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200571
Stephane Eraniand7470b62010-12-01 18:49:05 +0200572 if (csv_output)
573 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200574
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200575 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Stephane Eranian4aa90152011-08-15 22:22:33 +0200576 fprintf(output, " # %8.3f CPUs utilized ",
577 avg / avg_stats(&walltime_nsecs_stats));
Ingo Molnar42202dd2009-06-13 14:57:28 +0200578}
579
Ingo Molnard3d1e862011-04-29 13:49:08 +0200580static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
581{
582 double total, ratio = 0.0;
583 const char *color;
584
585 total = avg_stats(&runtime_cycles_stats[cpu]);
586
587 if (total)
588 ratio = avg / total * 100.0;
589
590 color = PERF_COLOR_NORMAL;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200591 if (ratio > 50.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200592 color = PERF_COLOR_RED;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200593 else if (ratio > 30.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200594 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200595 else if (ratio > 10.0)
Ingo Molnard3d1e862011-04-29 13:49:08 +0200596 color = PERF_COLOR_YELLOW;
597
Stephane Eranian4aa90152011-08-15 22:22:33 +0200598 fprintf(output, " # ");
599 color_fprintf(output, color, "%6.2f%%", ratio);
600 fprintf(output, " frontend cycles idle ");
Ingo Molnard3d1e862011-04-29 13:49:08 +0200601}
602
603static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200604{
605 double total, ratio = 0.0;
606 const char *color;
607
608 total = avg_stats(&runtime_cycles_stats[cpu]);
609
610 if (total)
611 ratio = avg / total * 100.0;
612
613 color = PERF_COLOR_NORMAL;
614 if (ratio > 75.0)
615 color = PERF_COLOR_RED;
616 else if (ratio > 50.0)
617 color = PERF_COLOR_MAGENTA;
Ingo Molnar2b427e12011-04-29 14:16:18 +0200618 else if (ratio > 20.0)
Ingo Molnara5d243d2011-04-27 05:39:24 +0200619 color = PERF_COLOR_YELLOW;
620
Stephane Eranian4aa90152011-08-15 22:22:33 +0200621 fprintf(output, " # ");
622 color_fprintf(output, color, "%6.2f%%", ratio);
623 fprintf(output, " backend cycles idle ");
Ingo Molnara5d243d2011-04-27 05:39:24 +0200624}
625
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200626static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
627{
628 double total, ratio = 0.0;
629 const char *color;
630
631 total = avg_stats(&runtime_branches_stats[cpu]);
632
633 if (total)
634 ratio = avg / total * 100.0;
635
636 color = PERF_COLOR_NORMAL;
637 if (ratio > 20.0)
638 color = PERF_COLOR_RED;
639 else if (ratio > 10.0)
640 color = PERF_COLOR_MAGENTA;
641 else if (ratio > 5.0)
642 color = PERF_COLOR_YELLOW;
643
Stephane Eranian4aa90152011-08-15 22:22:33 +0200644 fprintf(output, " # ");
645 color_fprintf(output, color, "%6.2f%%", ratio);
646 fprintf(output, " of all branches ");
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200647}
648
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200649static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
650{
651 double total, ratio = 0.0;
652 const char *color;
653
654 total = avg_stats(&runtime_l1_dcache_stats[cpu]);
655
656 if (total)
657 ratio = avg / total * 100.0;
658
659 color = PERF_COLOR_NORMAL;
660 if (ratio > 20.0)
661 color = PERF_COLOR_RED;
662 else if (ratio > 10.0)
663 color = PERF_COLOR_MAGENTA;
664 else if (ratio > 5.0)
665 color = PERF_COLOR_YELLOW;
666
Stephane Eranian4aa90152011-08-15 22:22:33 +0200667 fprintf(output, " # ");
668 color_fprintf(output, color, "%6.2f%%", ratio);
669 fprintf(output, " of all L1-dcache hits ");
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200670}
671
Ingo Molnarc3305252011-05-19 14:01:42 +0200672static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
673{
674 double total, ratio = 0.0;
675 const char *color;
676
677 total = avg_stats(&runtime_l1_icache_stats[cpu]);
678
679 if (total)
680 ratio = avg / total * 100.0;
681
682 color = PERF_COLOR_NORMAL;
683 if (ratio > 20.0)
684 color = PERF_COLOR_RED;
685 else if (ratio > 10.0)
686 color = PERF_COLOR_MAGENTA;
687 else if (ratio > 5.0)
688 color = PERF_COLOR_YELLOW;
689
Stephane Eranian4aa90152011-08-15 22:22:33 +0200690 fprintf(output, " # ");
691 color_fprintf(output, color, "%6.2f%%", ratio);
692 fprintf(output, " of all L1-icache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200693}
694
695static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
696{
697 double total, ratio = 0.0;
698 const char *color;
699
700 total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
701
702 if (total)
703 ratio = avg / total * 100.0;
704
705 color = PERF_COLOR_NORMAL;
706 if (ratio > 20.0)
707 color = PERF_COLOR_RED;
708 else if (ratio > 10.0)
709 color = PERF_COLOR_MAGENTA;
710 else if (ratio > 5.0)
711 color = PERF_COLOR_YELLOW;
712
Stephane Eranian4aa90152011-08-15 22:22:33 +0200713 fprintf(output, " # ");
714 color_fprintf(output, color, "%6.2f%%", ratio);
715 fprintf(output, " of all dTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200716}
717
718static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
719{
720 double total, ratio = 0.0;
721 const char *color;
722
723 total = avg_stats(&runtime_itlb_cache_stats[cpu]);
724
725 if (total)
726 ratio = avg / total * 100.0;
727
728 color = PERF_COLOR_NORMAL;
729 if (ratio > 20.0)
730 color = PERF_COLOR_RED;
731 else if (ratio > 10.0)
732 color = PERF_COLOR_MAGENTA;
733 else if (ratio > 5.0)
734 color = PERF_COLOR_YELLOW;
735
Stephane Eranian4aa90152011-08-15 22:22:33 +0200736 fprintf(output, " # ");
737 color_fprintf(output, color, "%6.2f%%", ratio);
738 fprintf(output, " of all iTLB cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200739}
740
741static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
742{
743 double total, ratio = 0.0;
744 const char *color;
745
746 total = avg_stats(&runtime_ll_cache_stats[cpu]);
747
748 if (total)
749 ratio = avg / total * 100.0;
750
751 color = PERF_COLOR_NORMAL;
752 if (ratio > 20.0)
753 color = PERF_COLOR_RED;
754 else if (ratio > 10.0)
755 color = PERF_COLOR_MAGENTA;
756 else if (ratio > 5.0)
757 color = PERF_COLOR_YELLOW;
758
Stephane Eranian4aa90152011-08-15 22:22:33 +0200759 fprintf(output, " # ");
760 color_fprintf(output, color, "%6.2f%%", ratio);
761 fprintf(output, " of all LL-cache hits ");
Ingo Molnarc3305252011-05-19 14:01:42 +0200762}
763
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200764static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200765{
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200766 double total, ratio = 0.0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200767 char cpustr[16] = { '\0', };
Stephane Eraniand7470b62010-12-01 18:49:05 +0200768 const char *fmt;
769
770 if (csv_output)
771 fmt = "%s%.0f%s%s";
772 else if (big_num)
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200773 fmt = "%s%'18.0f%s%-25s";
Stephane Eraniand7470b62010-12-01 18:49:05 +0200774 else
Ingo Molnar2cba3ff2011-05-19 13:30:56 +0200775 fmt = "%s%18.0f%s%-25s";
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200776
777 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200778 sprintf(cpustr, "CPU%*d%s",
779 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200780 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200781 else
782 cpu = 0;
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200783
Stephane Eranian4aa90152011-08-15 22:22:33 +0200784 fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200785
Stephane Eranian023695d2011-02-14 11:20:01 +0200786 if (evsel->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200787 fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200788
Stephane Eraniand7470b62010-12-01 18:49:05 +0200789 if (csv_output)
790 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200791
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200792 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200793 total = avg_stats(&runtime_cycles_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200794
795 if (total)
796 ratio = avg / total;
797
Stephane Eranian4aa90152011-08-15 22:22:33 +0200798 fprintf(output, " # %5.2f insns per cycle ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200799
Ingo Molnard3d1e862011-04-29 13:49:08 +0200800 total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
801 total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
Ingo Molnar481f9882011-04-27 04:34:16 +0200802
803 if (total && avg) {
804 ratio = total / avg;
Stephane Eranian4aa90152011-08-15 22:22:33 +0200805 fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200806 }
807
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200808 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200809 runtime_branches_stats[cpu].n != 0) {
Ingo Molnarc78df6c2011-04-27 12:16:10 +0200810 print_branch_misses(cpu, evsel, avg);
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200811 } else if (
812 evsel->attr.type == PERF_TYPE_HW_CACHE &&
813 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
814 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
815 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
Ingo Molnarc6264de2011-04-27 13:50:47 +0200816 runtime_l1_dcache_stats[cpu].n != 0) {
Ingo Molnar8bb6c792011-04-27 13:25:24 +0200817 print_l1_dcache_misses(cpu, evsel, avg);
Ingo Molnarc3305252011-05-19 14:01:42 +0200818 } else if (
819 evsel->attr.type == PERF_TYPE_HW_CACHE &&
820 evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
821 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
822 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
823 runtime_l1_icache_stats[cpu].n != 0) {
824 print_l1_icache_misses(cpu, evsel, avg);
825 } else if (
826 evsel->attr.type == PERF_TYPE_HW_CACHE &&
827 evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
828 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
829 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
830 runtime_dtlb_cache_stats[cpu].n != 0) {
831 print_dtlb_cache_misses(cpu, evsel, avg);
832 } else if (
833 evsel->attr.type == PERF_TYPE_HW_CACHE &&
834 evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
835 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
836 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
837 runtime_itlb_cache_stats[cpu].n != 0) {
838 print_itlb_cache_misses(cpu, evsel, avg);
839 } else if (
840 evsel->attr.type == PERF_TYPE_HW_CACHE &&
841 evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
842 ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
843 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
844 runtime_ll_cache_stats[cpu].n != 0) {
845 print_ll_cache_misses(cpu, evsel, avg);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200846 } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
847 runtime_cacherefs_stats[cpu].n != 0) {
848 total = avg_stats(&runtime_cacherefs_stats[cpu]);
849
850 if (total)
851 ratio = avg * 100 / total;
852
Stephane Eranian4aa90152011-08-15 22:22:33 +0200853 fprintf(output, " # %8.3f %% of all cache refs ", ratio);
Ingo Molnard58f4c82011-04-27 03:42:18 +0200854
Ingo Molnard3d1e862011-04-29 13:49:08 +0200855 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
856 print_stalled_cycles_frontend(cpu, evsel, avg);
Ingo Molnar129c04c2011-04-29 14:41:28 +0200857 } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
Ingo Molnard3d1e862011-04-29 13:49:08 +0200858 print_stalled_cycles_backend(cpu, evsel, avg);
Ingo Molnar481f9882011-04-27 04:34:16 +0200859 } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
860 total = avg_stats(&runtime_nsecs_stats[cpu]);
861
862 if (total)
863 ratio = 1.0 * avg / total;
864
Stephane Eranian4aa90152011-08-15 22:22:33 +0200865 fprintf(output, " # %8.3f GHz ", ratio);
Ingo Molnar481f9882011-04-27 04:34:16 +0200866 } else if (runtime_nsecs_stats[cpu].n != 0) {
867 total = avg_stats(&runtime_nsecs_stats[cpu]);
868
869 if (total)
870 ratio = 1000.0 * avg / total;
871
Stephane Eranian4aa90152011-08-15 22:22:33 +0200872 fprintf(output, " # %8.3f M/sec ", ratio);
Ingo Molnara5d243d2011-04-27 05:39:24 +0200873 } else {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200874 fprintf(output, " ");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200875 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200876}
877
878/*
879 * Print out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200880 * aggregated counts in system-wide mode
Ingo Molnar42202dd2009-06-13 14:57:28 +0200881 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200882static void print_counter_aggr(struct perf_evsel *counter)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200883{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200884 struct perf_stat *ps = counter->priv;
885 double avg = avg_stats(&ps->res_stats[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200886 int scaled = counter->counts->scaled;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200887
Ingo Molnar42202dd2009-06-13 14:57:28 +0200888 if (scaled == -1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200889 fprintf(output, "%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200890 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600891 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
Stephane Eranian023695d2011-02-14 11:20:01 +0200892 csv_sep,
893 csv_output ? 0 : -24,
894 event_name(counter));
895
896 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200897 fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200898
Stephane Eranian4aa90152011-08-15 22:22:33 +0200899 fputc('\n', output);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200900 return;
901 }
902
903 if (nsec_counter(counter))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200904 nsec_printout(-1, counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200905 else
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200906 abs_printout(-1, counter, avg);
Peter Zijlstra849abde2009-09-04 18:23:38 +0200907
Zhengyu He3ae9a34d2011-06-23 13:45:42 -0700908 print_noise(counter, avg);
909
Stephane Eraniand7470b62010-12-01 18:49:05 +0200910 if (csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200911 fputc('\n', output);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200912 return;
913 }
914
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200915 if (scaled) {
916 double avg_enabled, avg_running;
917
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200918 avg_enabled = avg_stats(&ps->res_stats[1]);
919 avg_running = avg_stats(&ps->res_stats[2]);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200920
Stephane Eranian4aa90152011-08-15 22:22:33 +0200921 fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200922 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200923 fprintf(output, "\n");
Ingo Molnar42202dd2009-06-13 14:57:28 +0200924}
925
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200926/*
927 * Print out the results of a single counter:
928 * does not use aggregated count in system-wide
929 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200930static void print_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200931{
932 u64 ena, run, val;
933 int cpu;
934
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200935 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200936 val = counter->counts->cpu[cpu].val;
937 ena = counter->counts->cpu[cpu].ena;
938 run = counter->counts->cpu[cpu].run;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200939 if (run == 0 || ena == 0) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200940 fprintf(output, "CPU%*d%s%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200941 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200942 evsel_list->cpus->map[cpu], csv_sep,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200943 csv_output ? 0 : 18,
David Ahern2cee77c2011-05-30 08:55:59 -0600944 counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
945 csv_sep,
Stephane Eranian023695d2011-02-14 11:20:01 +0200946 csv_output ? 0 : -24,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200947 event_name(counter));
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200948
Stephane Eranian023695d2011-02-14 11:20:01 +0200949 if (counter->cgrp)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200950 fprintf(output, "%s%s",
951 csv_sep, counter->cgrp->name);
Stephane Eranian023695d2011-02-14 11:20:01 +0200952
Stephane Eranian4aa90152011-08-15 22:22:33 +0200953 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200954 continue;
955 }
956
957 if (nsec_counter(counter))
958 nsec_printout(cpu, counter, val);
959 else
960 abs_printout(cpu, counter, val);
961
Stephane Eraniand7470b62010-12-01 18:49:05 +0200962 if (!csv_output) {
963 print_noise(counter, 1.0);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200964
Ingo Molnarc6264de2011-04-27 13:50:47 +0200965 if (run != ena)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200966 fprintf(output, " (%.2f%%)",
967 100.0 * run / ena);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200968 }
Stephane Eranian4aa90152011-08-15 22:22:33 +0200969 fputc('\n', output);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200970 }
971}
972
Ingo Molnar42202dd2009-06-13 14:57:28 +0200973static void print_stat(int argc, const char **argv)
974{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200975 struct perf_evsel *counter;
976 int i;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200977
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200978 fflush(stdout);
979
Stephane Eraniand7470b62010-12-01 18:49:05 +0200980 if (!csv_output) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200981 fprintf(output, "\n");
982 fprintf(output, " Performance counter stats for ");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200983 if(target_pid == -1 && target_tid == -1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +0200984 fprintf(output, "\'%s", argv[0]);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200985 for (i = 1; i < argc; i++)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200986 fprintf(output, " %s", argv[i]);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200987 } else if (target_pid != -1)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200988 fprintf(output, "process id \'%d", target_pid);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200989 else
Stephane Eranian4aa90152011-08-15 22:22:33 +0200990 fprintf(output, "thread id \'%d", target_tid);
Ingo Molnar44db76c2009-06-03 19:36:07 +0200991
Stephane Eranian4aa90152011-08-15 22:22:33 +0200992 fprintf(output, "\'");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200993 if (run_count > 1)
Stephane Eranian4aa90152011-08-15 22:22:33 +0200994 fprintf(output, " (%d runs)", run_count);
995 fprintf(output, ":\n\n");
Stephane Eraniand7470b62010-12-01 18:49:05 +0200996 }
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200997
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200998 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200999 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001000 print_counter(counter);
1001 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001002 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001003 print_counter_aggr(counter);
1004 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001005
Stephane Eraniand7470b62010-12-01 18:49:05 +02001006 if (!csv_output) {
Ingo Molnarc3305252011-05-19 14:01:42 +02001007 if (!null_run)
Stephane Eranian4aa90152011-08-15 22:22:33 +02001008 fprintf(output, "\n");
1009 fprintf(output, " %17.9f seconds time elapsed",
Stephane Eraniand7470b62010-12-01 18:49:05 +02001010 avg_stats(&walltime_nsecs_stats)/1e9);
1011 if (run_count > 1) {
Stephane Eranian4aa90152011-08-15 22:22:33 +02001012 fprintf(output, " ");
Ingo Molnarf99844c2011-04-27 05:35:39 +02001013 print_noise_pct(stddev_stats(&walltime_nsecs_stats),
1014 avg_stats(&walltime_nsecs_stats));
Stephane Eraniand7470b62010-12-01 18:49:05 +02001015 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001016 fprintf(output, "\n\n");
Ingo Molnar566747e2009-06-27 06:24:32 +02001017 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001018}
1019
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001020static volatile int signr = -1;
1021
Ingo Molnar52425192009-05-26 09:17:18 +02001022static void skip_signal(int signo)
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001023{
Zhang, Yanmin6be28502010-03-18 11:36:03 -03001024 if(child_pid == -1)
Liming Wang60666c62009-12-31 16:05:50 +08001025 done = 1;
1026
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001027 signr = signo;
1028}
1029
1030static void sig_atexit(void)
1031{
Chris Wilson933da832009-10-04 01:35:01 +01001032 if (child_pid != -1)
1033 kill(child_pid, SIGTERM);
1034
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001035 if (signr == -1)
1036 return;
1037
1038 signal(signr, SIG_DFL);
1039 kill(getpid(), signr);
Ingo Molnar52425192009-05-26 09:17:18 +02001040}
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001041
Ingo Molnar52425192009-05-26 09:17:18 +02001042static const char * const stat_usage[] = {
Liming Wang60666c62009-12-31 16:05:50 +08001043 "perf stat [<options>] [<command>]",
Ingo Molnar52425192009-05-26 09:17:18 +02001044 NULL
1045};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001046
Stephane Eraniand7470b62010-12-01 18:49:05 +02001047static int stat__set_big_num(const struct option *opt __used,
1048 const char *s __used, int unset)
1049{
1050 big_num_opt = unset ? 0 : 1;
1051 return 0;
1052}
1053
Stephane Eranian4aa90152011-08-15 22:22:33 +02001054static bool append_file;
1055
Ingo Molnar52425192009-05-26 09:17:18 +02001056static const struct option options[] = {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001057 OPT_CALLBACK('e', "event", &evsel_list, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +02001058 "event selector. use 'perf list' to list available events",
Jiri Olsaf120f9d2011-07-14 11:25:32 +02001059 parse_events_option),
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +01001060 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
1061 "event filter", parse_filter),
Stephane Eranian2e6cdf92010-05-12 10:40:01 +02001062 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
1063 "child tasks do not inherit counters"),
Ingo Molnar52425192009-05-26 09:17:18 +02001064 OPT_INTEGER('p', "pid", &target_pid,
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001065 "stat events on existing process id"),
1066 OPT_INTEGER('t', "tid", &target_tid,
1067 "stat events on existing thread id"),
Ingo Molnar52425192009-05-26 09:17:18 +02001068 OPT_BOOLEAN('a', "all-cpus", &system_wide,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301069 "system-wide collection from all CPUs"),
Lin Ming43bece72011-08-17 18:42:07 +08001070 OPT_BOOLEAN('g', "group", &group,
1071 "put the counters into a counter group"),
Brice Goglinb26bc5a2009-08-07 10:18:39 +02001072 OPT_BOOLEAN('c', "scale", &scale,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +05301073 "scale/normalize counters"),
Ian Munsiec0555642010-04-13 18:37:33 +10001074 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar743ee1f2009-06-07 17:06:46 +02001075 "be more verbose (show counter open errors, etc)"),
Ingo Molnar42202dd2009-06-13 14:57:28 +02001076 OPT_INTEGER('r', "repeat", &run_count,
1077 "repeat command and print average + stddev (max: 100)"),
Ingo Molnar0cfb7a12009-06-27 06:10:30 +02001078 OPT_BOOLEAN('n', "null", &null_run,
1079 "null run - dont start any counters"),
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001080 OPT_INCR('d', "detailed", &detailed_run,
Ingo Molnarc6264de2011-04-27 13:50:47 +02001081 "detailed run - start a lot of events"),
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001082 OPT_BOOLEAN('S', "sync", &sync_run,
1083 "call sync() before starting a run"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001084 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
1085 "print large numbers with thousands\' separators",
1086 stat__set_big_num),
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001087 OPT_STRING('C', "cpu", &cpu_list, "cpu",
1088 "list of cpus to monitor in system-wide"),
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001089 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
1090 "disable CPU count aggregation"),
Stephane Eraniand7470b62010-12-01 18:49:05 +02001091 OPT_STRING('x', "field-separator", &csv_sep, "separator",
1092 "print counts with custom separator"),
Stephane Eranian023695d2011-02-14 11:20:01 +02001093 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
1094 "monitor event in cgroup name only",
1095 parse_cgroups),
Stephane Eranian4aa90152011-08-15 22:22:33 +02001096 OPT_STRING('o', "output", &output_name, "file",
1097 "output file name"),
1098 OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
Jim Cromie56f3bae2011-09-07 17:14:00 -06001099 OPT_INTEGER(0, "log-fd", &output_fd,
1100 "log output to fd, instead of stderr"),
Ingo Molnar52425192009-05-26 09:17:18 +02001101 OPT_END()
1102};
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001103
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001104/*
1105 * Add default attributes, if there were no attributes specified or
1106 * if -d/--detailed, -d -d or -d -d -d is used:
1107 */
1108static int add_default_attributes(void)
1109{
1110 struct perf_evsel *pos;
1111 size_t attr_nr = 0;
1112 size_t c;
1113
1114 /* Set attrs if no event is selected and !null_run: */
1115 if (null_run)
1116 return 0;
1117
1118 if (!evsel_list->nr_entries) {
1119 for (c = 0; c < ARRAY_SIZE(default_attrs); c++) {
1120 pos = perf_evsel__new(default_attrs + c, c + attr_nr);
1121 if (pos == NULL)
1122 return -1;
1123 perf_evlist__add(evsel_list, pos);
1124 }
1125 attr_nr += c;
1126 }
1127
1128 /* Detailed events get appended to the event list: */
1129
1130 if (detailed_run < 1)
1131 return 0;
1132
1133 /* Append detailed run extra attributes: */
1134 for (c = 0; c < ARRAY_SIZE(detailed_attrs); c++) {
1135 pos = perf_evsel__new(detailed_attrs + c, c + attr_nr);
1136 if (pos == NULL)
1137 return -1;
1138 perf_evlist__add(evsel_list, pos);
1139 }
1140 attr_nr += c;
1141
1142 if (detailed_run < 2)
1143 return 0;
1144
1145 /* Append very detailed run extra attributes: */
1146 for (c = 0; c < ARRAY_SIZE(very_detailed_attrs); c++) {
1147 pos = perf_evsel__new(very_detailed_attrs + c, c + attr_nr);
1148 if (pos == NULL)
1149 return -1;
1150 perf_evlist__add(evsel_list, pos);
1151 }
1152
1153 if (detailed_run < 3)
1154 return 0;
1155
1156 /* Append very, very detailed run extra attributes: */
1157 for (c = 0; c < ARRAY_SIZE(very_very_detailed_attrs); c++) {
1158 pos = perf_evsel__new(very_very_detailed_attrs + c, c + attr_nr);
1159 if (pos == NULL)
1160 return -1;
1161 perf_evlist__add(evsel_list, pos);
1162 }
1163
1164
1165 return 0;
1166}
1167
Ingo Molnarf37a2912009-07-01 12:37:06 +02001168int cmd_stat(int argc, const char **argv, const char *prefix __used)
Ingo Molnar52425192009-05-26 09:17:18 +02001169{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001170 struct perf_evsel *pos;
1171 int status = -ENOMEM;
Stephane Eranian4aa90152011-08-15 22:22:33 +02001172 const char *mode;
Ingo Molnar42202dd2009-06-13 14:57:28 +02001173
Stephane Eranian5af52b52010-05-18 15:00:01 +02001174 setlocale(LC_ALL, "");
1175
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001176 evsel_list = perf_evlist__new(NULL, NULL);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001177 if (evsel_list == NULL)
1178 return -ENOMEM;
1179
Anton Blancharda0541232009-07-22 23:04:12 +10001180 argc = parse_options(argc, argv, options, stat_usage,
1181 PARSE_OPT_STOP_AT_NON_OPTION);
Stephane Eraniand7470b62010-12-01 18:49:05 +02001182
Stephane Eranian4aa90152011-08-15 22:22:33 +02001183 output = stderr;
1184 if (output_name && strcmp(output_name, "-"))
1185 output = NULL;
1186
Jim Cromie56f3bae2011-09-07 17:14:00 -06001187 if (output_name && output_fd) {
1188 fprintf(stderr, "cannot use both --output and --log-fd\n");
1189 usage_with_options(stat_usage, options);
1190 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001191 if (!output) {
1192 struct timespec tm;
1193 mode = append_file ? "a" : "w";
1194
1195 output = fopen(output_name, mode);
1196 if (!output) {
1197 perror("failed to create output file");
1198 exit(-1);
1199 }
1200 clock_gettime(CLOCK_REALTIME, &tm);
1201 fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
Jim Cromie56f3bae2011-09-07 17:14:00 -06001202 } else if (output_fd != 2) {
1203 mode = append_file ? "a" : "w";
1204 output = fdopen(output_fd, mode);
1205 if (!output) {
1206 perror("Failed opening logfd");
1207 return -errno;
1208 }
Stephane Eranian4aa90152011-08-15 22:22:33 +02001209 }
1210
Jim Cromied4ffd042011-09-07 17:14:03 -06001211 if (csv_sep) {
Stephane Eraniand7470b62010-12-01 18:49:05 +02001212 csv_output = true;
Jim Cromied4ffd042011-09-07 17:14:03 -06001213 if (!strcmp(csv_sep, "\\t"))
1214 csv_sep = "\t";
1215 } else
Stephane Eraniand7470b62010-12-01 18:49:05 +02001216 csv_sep = DEFAULT_SEPARATOR;
1217
1218 /*
1219 * let the spreadsheet do the pretty-printing
1220 */
1221 if (csv_output) {
Jim Cromie61a9f322011-09-07 17:14:04 -06001222 /* User explicitly passed -B? */
Stephane Eraniand7470b62010-12-01 18:49:05 +02001223 if (big_num_opt == 1) {
1224 fprintf(stderr, "-B option not supported with -x\n");
1225 usage_with_options(stat_usage, options);
1226 } else /* Nope, so disable big number formatting */
1227 big_num = false;
1228 } else if (big_num_opt == 0) /* User passed --no-big-num */
1229 big_num = false;
1230
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001231 if (!argc && target_pid == -1 && target_tid == -1)
Ingo Molnar52425192009-05-26 09:17:18 +02001232 usage_with_options(stat_usage, options);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +02001233 if (run_count <= 0)
Ingo Molnar42202dd2009-06-13 14:57:28 +02001234 usage_with_options(stat_usage, options);
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001235
Stephane Eranian023695d2011-02-14 11:20:01 +02001236 /* no_aggr, cgroup are for system-wide only */
1237 if ((no_aggr || nr_cgroups) && !system_wide) {
1238 fprintf(stderr, "both cgroup and no-aggregation "
1239 "modes only available in system-wide mode\n");
1240
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001241 usage_with_options(stat_usage, options);
Stephane Eranian023695d2011-02-14 11:20:01 +02001242 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +02001243
Ingo Molnar2cba3ff2011-05-19 13:30:56 +02001244 if (add_default_attributes())
1245 goto out;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001246
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001247 if (target_pid != -1)
1248 target_tid = target_pid;
1249
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001250 evsel_list->threads = thread_map__new(target_pid, target_tid);
1251 if (evsel_list->threads == NULL) {
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -02001252 pr_err("Problems finding threads of monitor\n");
1253 usage_with_options(stat_usage, options);
1254 }
1255
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001256 if (system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001257 evsel_list->cpus = cpu_map__new(cpu_list);
Paul Mackerrasa12b51c2010-03-10 20:36:09 +11001258 else
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001259 evsel_list->cpus = cpu_map__dummy_new();
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001260
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001261 if (evsel_list->cpus == NULL) {
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001262 perror("failed to parse CPUs map");
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001263 usage_with_options(stat_usage, options);
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -02001264 return -1;
1265 }
Stephane Eranianc45c6ea2010-05-28 12:00:01 +02001266
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001267 list_for_each_entry(pos, &evsel_list->entries, node) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -02001268 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001269 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
1270 perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001271 goto out_free_fd;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -03001272 }
1273
Ingo Molnar58d7e992009-05-15 11:03:23 +02001274 /*
1275 * We dont want to block the signals - that would cause
1276 * child tasks to inherit that and Ctrl-C would not work.
1277 * What we want is for Ctrl-C to work in the exec()-ed
1278 * task, but being ignored by perf stat itself:
1279 */
Peter Zijlstraf7b7c262009-06-10 15:55:59 +02001280 atexit(sig_atexit);
Ingo Molnar58d7e992009-05-15 11:03:23 +02001281 signal(SIGINT, skip_signal);
1282 signal(SIGALRM, skip_signal);
1283 signal(SIGABRT, skip_signal);
1284
Ingo Molnar42202dd2009-06-13 14:57:28 +02001285 status = 0;
1286 for (run_idx = 0; run_idx < run_count; run_idx++) {
1287 if (run_count != 1 && verbose)
Stephane Eranian4aa90152011-08-15 22:22:33 +02001288 fprintf(output, "[ perf stat: executing run #%d ... ]\n",
1289 run_idx + 1);
Ingo Molnarf9cef0a2011-04-28 18:17:11 +02001290
1291 if (sync_run)
1292 sync();
1293
Ingo Molnar42202dd2009-06-13 14:57:28 +02001294 status = run_perf_stat(argc, argv);
1295 }
1296
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -03001297 if (status != -1)
1298 print_stat(argc, argv);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001299out_free_fd:
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001300 list_for_each_entry(pos, &evsel_list->entries, node)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -02001301 perf_evsel__free_stat_priv(pos);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -02001302 perf_evlist__delete_maps(evsel_list);
Arnaldo Carvalho de Melo0015e2e2011-02-01 16:18:10 -02001303out:
1304 perf_evlist__delete(evsel_list);
Ingo Molnar42202dd2009-06-13 14:57:28 +02001305 return status;
Ingo Molnarddcacfa2009-04-20 15:37:32 +02001306}