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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 Molnarbf9e1872009-06-02 23:37:05 +02009 $ perf stat ~/hackbench 10
10 Time: 0.104
Ingo Molnarddcacfa2009-04-20 15:37:32 +020011
Ingo Molnarbf9e1872009-06-02 23:37:05 +020012 Performance counter stats for '/home/mingo/hackbench':
Ingo Molnarddcacfa2009-04-20 15:37:32 +020013
Ingo Molnarbf9e1872009-06-02 23:37:05 +020014 1255.538611 task clock ticks # 10.143 CPU utilization factor
15 54011 context switches # 0.043 M/sec
16 385 CPU migrations # 0.000 M/sec
17 17755 pagefaults # 0.014 M/sec
18 3808323185 CPU cycles # 3033.219 M/sec
19 1575111190 instructions # 1254.530 M/sec
20 17367895 cache references # 13.833 M/sec
21 7674421 cache misses # 6.112 M/sec
Ingo Molnarddcacfa2009-04-20 15:37:32 +020022
Ingo Molnarbf9e1872009-06-02 23:37:05 +020023 Wall-clock time elapsed: 123.786620 msecs
Ingo Molnarddcacfa2009-04-20 15:37:32 +020024
Ingo Molnar52425192009-05-26 09:17:18 +020025 *
26 * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
27 *
28 * Improvements and fixes by:
29 *
30 * Arjan van de Ven <arjan@linux.intel.com>
31 * Yanmin Zhang <yanmin.zhang@intel.com>
32 * Wu Fengguang <fengguang.wu@intel.com>
33 * Mike Galbraith <efault@gmx.de>
34 * Paul Mackerras <paulus@samba.org>
Jaswinder Singh Rajput6e750a8f2009-06-27 03:02:07 +053035 * Jaswinder Singh Rajput <jaswinder@kernel.org>
Ingo Molnar52425192009-05-26 09:17:18 +020036 *
37 * Released under the GPL v2. (and only v2, not any later version)
Ingo Molnarddcacfa2009-04-20 15:37:32 +020038 */
39
Peter Zijlstra1a482f32009-05-23 18:28:58 +020040#include "perf.h"
Ingo Molnar16f762a2009-05-27 09:10:38 +020041#include "builtin.h"
Ingo Molnar148be2c2009-04-27 08:02:14 +020042#include "util/util.h"
Ingo Molnar52425192009-05-26 09:17:18 +020043#include "util/parse-options.h"
44#include "util/parse-events.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020045#include "util/event.h"
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020046#include "util/evlist.h"
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -020047#include "util/evsel.h"
Frederic Weisbecker8f28827a2009-08-16 22:05:48 +020048#include "util/debug.h"
Liming Wang60666c62009-12-31 16:05:50 +080049#include "util/header.h"
Paul Mackerrasa12b51c2010-03-10 20:36:09 +110050#include "util/cpumap.h"
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030051#include "util/thread.h"
Arnaldo Carvalho de Melofd782602011-01-18 15:15:24 -020052#include "util/thread_map.h"
Ingo Molnarddcacfa2009-04-20 15:37:32 +020053
Ingo Molnarddcacfa2009-04-20 15:37:32 +020054#include <sys/prctl.h>
Ingo Molnar42202dd2009-06-13 14:57:28 +020055#include <math.h>
Stephane Eranian5af52b52010-05-18 15:00:01 +020056#include <locale.h>
Peter Zijlstra16c8a102009-05-05 17:50:27 +020057
Stephane Eraniand7470b62010-12-01 18:49:05 +020058#define DEFAULT_SEPARATOR " "
59
Ingo Molnarcdd6c482009-09-21 12:02:48 +020060static struct perf_event_attr default_attrs[] = {
Ingo Molnara21ca2c2009-06-06 09:58:57 +020061
Ingo Molnar56aab462009-10-19 13:27:08 +020062 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
63 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
64 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
65 { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
Ingo Molnara21ca2c2009-06-06 09:58:57 +020066
Ingo Molnar56aab462009-10-19 13:27:08 +020067 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
68 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
Ingo Molnar56aab462009-10-19 13:27:08 +020069 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
70 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
Ingo Molnardd86e722009-10-19 13:33:03 +020071 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES },
72 { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES },
Peter Zijlstraf4dbfa82009-06-11 14:06:28 +020073
Ingo Molnara21ca2c2009-06-06 09:58:57 +020074};
75
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020076struct perf_evlist *evsel_list;
77
Ian Munsiec0555642010-04-13 18:37:33 +100078static bool system_wide = false;
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +053079static int run_idx = 0;
80
81static int run_count = 1;
Stephane Eranian2e6cdf92010-05-12 10:40:01 +020082static bool no_inherit = false;
Ian Munsiec0555642010-04-13 18:37:33 +100083static bool scale = true;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +020084static bool no_aggr = false;
Chris Wilson933da832009-10-04 01:35:01 +010085static pid_t target_pid = -1;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -030086static pid_t target_tid = -1;
Chris Wilson933da832009-10-04 01:35:01 +010087static pid_t child_pid = -1;
Ian Munsiec0555642010-04-13 18:37:33 +100088static bool null_run = false;
Arnaldo Carvalho de Melo201e0b02010-12-01 17:53:27 -020089static bool big_num = true;
Stephane Eraniand7470b62010-12-01 18:49:05 +020090static int big_num_opt = -1;
Stephane Eranianc45c6ea2010-05-28 12:00:01 +020091static const char *cpu_list;
Stephane Eraniand7470b62010-12-01 18:49:05 +020092static const char *csv_sep = NULL;
93static bool csv_output = false;
Stephane Eranian5af52b52010-05-18 15:00:01 +020094
Liming Wang60666c62009-12-31 16:05:50 +080095static volatile int done = 0;
96
Peter Zijlstra506d4bc2009-09-04 15:36:12 +020097struct stats
98{
Peter Zijlstra8a026312009-09-04 17:26:26 +020099 double n, mean, M2;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200100};
Ingo Molnar42202dd2009-06-13 14:57:28 +0200101
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200102struct perf_stat {
103 struct stats res_stats[3];
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200104};
105
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200106static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200107{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200108 evsel->priv = zalloc(sizeof(struct perf_stat));
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200109 return evsel->priv == NULL ? -ENOMEM : 0;
110}
111
112static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
113{
114 free(evsel->priv);
115 evsel->priv = NULL;
116}
117
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200118static void update_stats(struct stats *stats, u64 val)
119{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200120 double delta;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200121
Peter Zijlstra8a026312009-09-04 17:26:26 +0200122 stats->n++;
123 delta = val - stats->mean;
124 stats->mean += delta / stats->n;
125 stats->M2 += delta*(val - stats->mean);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200126}
127
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200128static double avg_stats(struct stats *stats)
129{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200130 return stats->mean;
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200131}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200132
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200133/*
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200134 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
135 *
Peter Zijlstra8a026312009-09-04 17:26:26 +0200136 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
137 * s^2 = -------------------------------
138 * n - 1
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200139 *
140 * http://en.wikipedia.org/wiki/Stddev
141 *
142 * The std dev of the mean is related to the std dev by:
143 *
144 * s
145 * s_mean = -------
146 * sqrt(n)
147 *
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200148 */
149static double stddev_stats(struct stats *stats)
150{
Peter Zijlstra8a026312009-09-04 17:26:26 +0200151 double variance = stats->M2 / (stats->n - 1);
152 double variance_mean = variance / stats->n;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200153
Peter Zijlstra63d40de2009-09-04 17:03:13 +0200154 return sqrt(variance_mean);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200155}
Ingo Molnar42202dd2009-06-13 14:57:28 +0200156
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200157struct stats runtime_nsecs_stats[MAX_NR_CPUS];
158struct stats runtime_cycles_stats[MAX_NR_CPUS];
159struct stats runtime_branches_stats[MAX_NR_CPUS];
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200160struct stats walltime_nsecs_stats;
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200161
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200162static int create_perf_stat_counter(struct perf_evsel *evsel)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200163{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200164 struct perf_event_attr *attr = &evsel->attr;
Peter Zijlstra16c8a102009-05-05 17:50:27 +0200165
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200166 if (scale)
Ingo Molnara21ca2c2009-06-06 09:58:57 +0200167 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
168 PERF_FORMAT_TOTAL_TIME_RUNNING;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200169
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200170 attr->inherit = !no_inherit;
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300171
172 if (system_wide)
173 return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false);
174
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200175 if (target_pid == -1 && target_tid == -1) {
176 attr->disabled = 1;
177 attr->enable_on_exec = 1;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200178 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300179
Arnaldo Carvalho de Melo5d2cd902011-04-14 11:20:14 -0300180 return perf_evsel__open_per_thread(evsel, evsel_list->threads, false);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200181}
182
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200183/*
184 * Does the counter have nsecs as a unit?
185 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200186static inline int nsec_counter(struct perf_evsel *evsel)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200187{
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200188 if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
189 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200190 return 1;
191
192 return 0;
193}
194
195/*
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200196 * Read out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200197 * aggregate counts across CPUs in system-wide mode
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200198 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200199static int read_counter_aggr(struct perf_evsel *counter)
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200200{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200201 struct perf_stat *ps = counter->priv;
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200202 u64 *count = counter->counts->aggr.values;
203 int i;
Ingo Molnarc04f5e52009-05-29 09:10:54 +0200204
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200205 if (__perf_evsel__read(counter, evsel_list->cpus->nr,
206 evsel_list->threads->nr, scale) < 0)
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200207 return -1;
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200208
209 for (i = 0; i < 3; i++)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200210 update_stats(&ps->res_stats[i], count[i]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200211
212 if (verbose) {
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200213 fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
214 event_name(counter), count[0], count[1], count[2]);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200215 }
216
Ingo Molnarbe1ac0d2009-05-29 09:10:54 +0200217 /*
218 * Save the full runtime - to allow normalization during printout:
219 */
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200220 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200221 update_stats(&runtime_nsecs_stats[0], count[0]);
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200222 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200223 update_stats(&runtime_cycles_stats[0], count[0]);
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200224 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200225 update_stats(&runtime_branches_stats[0], count[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200226
227 return 0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200228}
229
230/*
231 * Read out the results of a single counter:
232 * do not aggregate counts across CPUs in system-wide mode
233 */
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200234static int read_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200235{
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200236 u64 *count;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200237 int cpu;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200238
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200239 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200240 if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
241 return -1;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200242
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200243 count = counter->counts->cpu[cpu].values;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200244
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200245 if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200246 update_stats(&runtime_nsecs_stats[cpu], count[0]);
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200247 if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200248 update_stats(&runtime_cycles_stats[cpu], count[0]);
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200249 if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200250 update_stats(&runtime_branches_stats[cpu], count[0]);
251 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200252
253 return 0;
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200254}
255
Ingo Molnarf37a2912009-07-01 12:37:06 +0200256static int run_perf_stat(int argc __used, const char **argv)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200257{
258 unsigned long long t0, t1;
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200259 struct perf_evsel *counter;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200260 int status = 0;
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000261 int child_ready_pipe[2], go_pipe[2];
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300262 const bool forks = (argc > 0);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000263 char buf;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200264
Liming Wang60666c62009-12-31 16:05:50 +0800265 if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000266 perror("failed to create pipes");
267 exit(1);
268 }
269
Liming Wang60666c62009-12-31 16:05:50 +0800270 if (forks) {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300271 if ((child_pid = fork()) < 0)
Liming Wang60666c62009-12-31 16:05:50 +0800272 perror("failed to fork");
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000273
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300274 if (!child_pid) {
Liming Wang60666c62009-12-31 16:05:50 +0800275 close(child_ready_pipe[0]);
276 close(go_pipe[1]);
277 fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
278
279 /*
280 * Do a dummy execvp to get the PLT entry resolved,
281 * so we avoid the resolver overhead on the real
282 * execvp call.
283 */
284 execvp("", (char **)argv);
285
286 /*
287 * Tell the parent we're ready to go
288 */
289 close(child_ready_pipe[1]);
290
291 /*
292 * Wait until the parent tells us to go.
293 */
294 if (read(go_pipe[0], &buf, 1) == -1)
295 perror("unable to read pipe");
296
297 execvp(argv[0], (char **)argv);
298
299 perror(argv[0]);
300 exit(-1);
301 }
302
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300303 if (target_tid == -1 && target_pid == -1 && !system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200304 evsel_list->threads->map[0] = child_pid;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300305
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000306 /*
Liming Wang60666c62009-12-31 16:05:50 +0800307 * Wait for the child to be ready to exec.
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000308 */
309 close(child_ready_pipe[1]);
Liming Wang60666c62009-12-31 16:05:50 +0800310 close(go_pipe[0]);
311 if (read(child_ready_pipe[0], &buf, 1) == -1)
Frederic Weisbeckera92bef02009-07-01 21:02:10 +0200312 perror("unable to read pipe");
Liming Wang60666c62009-12-31 16:05:50 +0800313 close(child_ready_pipe[0]);
Paul Mackerras051ae7f2009-06-29 21:13:21 +1000314 }
315
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200316 list_for_each_entry(counter, &evsel_list->entries, node) {
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200317 if (create_perf_stat_counter(counter) < 0) {
318 if (errno == -EPERM || errno == -EACCES) {
319 error("You may not have permission to collect %sstats.\n"
320 "\t Consider tweaking"
321 " /proc/sys/kernel/perf_event_paranoid or running as root.",
322 system_wide ? "system-wide " : "");
David Ahern5a3446b2011-01-09 11:21:12 -0700323 } else if (errno == ENOENT) {
324 error("%s event is not supported. ", event_name(counter));
Arnaldo Carvalho de Melo48290602011-01-03 17:48:12 -0200325 } else {
326 error("open_counter returned with %d (%s). "
327 "/bin/dmesg may provide additional information.\n",
328 errno, strerror(errno));
329 }
330 if (child_pid != -1)
331 kill(child_pid, SIGTERM);
332 die("Not all events could be opened.\n");
333 return -1;
334 }
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300335 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200336
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100337 if (perf_evlist__set_filters(evsel_list)) {
338 error("failed to set filter with %d (%s)\n", errno,
339 strerror(errno));
340 return -1;
341 }
342
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200343 /*
344 * Enable counters and exec the command:
345 */
346 t0 = rdclock();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200347
Liming Wang60666c62009-12-31 16:05:50 +0800348 if (forks) {
349 close(go_pipe[1]);
350 wait(&status);
351 } else {
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300352 while(!done) sleep(1);
Liming Wang60666c62009-12-31 16:05:50 +0800353 }
Ingo Molnar44db76c2009-06-03 19:36:07 +0200354
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200355 t1 = rdclock();
356
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200357 update_stats(&walltime_nsecs_stats, t1 - t0);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200358
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200359 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200360 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200361 read_counter(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200362 perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200363 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200364 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200365 list_for_each_entry(counter, &evsel_list->entries, node) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200366 read_counter_aggr(counter);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200367 perf_evsel__close_fd(counter, evsel_list->cpus->nr,
368 evsel_list->threads->nr);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200369 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200370 }
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200371
Ingo Molnar42202dd2009-06-13 14:57:28 +0200372 return WEXITSTATUS(status);
373}
374
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200375static void print_noise(struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200376{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200377 struct perf_stat *ps;
378
Peter Zijlstra849abde2009-09-04 18:23:38 +0200379 if (run_count == 1)
380 return;
381
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200382 ps = evsel->priv;
Peter Zijlstra849abde2009-09-04 18:23:38 +0200383 fprintf(stderr, " ( +- %7.3f%% )",
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200384 100 * stddev_stats(&ps->res_stats[0]) / avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200385}
386
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200387static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200388{
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200389 double msecs = avg / 1e6;
Stephane Eraniand7470b62010-12-01 18:49:05 +0200390 char cpustr[16] = { '\0', };
391 const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-24s";
Ingo Molnar42202dd2009-06-13 14:57:28 +0200392
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200393 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200394 sprintf(cpustr, "CPU%*d%s",
395 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200396 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200397
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200398 fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200399
Stephane Eranian023695d2011-02-14 11:20:01 +0200400 if (evsel->cgrp)
401 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
402
Stephane Eraniand7470b62010-12-01 18:49:05 +0200403 if (csv_output)
404 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200405
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200406 if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200407 fprintf(stderr, " # %10.3f CPUs ",
408 avg / avg_stats(&walltime_nsecs_stats));
Ingo Molnar42202dd2009-06-13 14:57:28 +0200409}
410
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200411static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200412{
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200413 double total, ratio = 0.0;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200414 char cpustr[16] = { '\0', };
Stephane Eraniand7470b62010-12-01 18:49:05 +0200415 const char *fmt;
416
417 if (csv_output)
418 fmt = "%s%.0f%s%s";
419 else if (big_num)
420 fmt = "%s%'18.0f%s%-24s";
421 else
422 fmt = "%s%18.0f%s%-24s";
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200423
424 if (no_aggr)
Stephane Eraniand7470b62010-12-01 18:49:05 +0200425 sprintf(cpustr, "CPU%*d%s",
426 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200427 evsel_list->cpus->map[cpu], csv_sep);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200428 else
429 cpu = 0;
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200430
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200431 fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200432
Stephane Eranian023695d2011-02-14 11:20:01 +0200433 if (evsel->cgrp)
434 fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name);
435
Stephane Eraniand7470b62010-12-01 18:49:05 +0200436 if (csv_output)
437 return;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200438
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200439 if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200440 total = avg_stats(&runtime_cycles_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200441
442 if (total)
443 ratio = avg / total;
444
445 fprintf(stderr, " # %10.3f IPC ", ratio);
Arnaldo Carvalho de Melodaec78a2011-01-03 16:49:44 -0200446 } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200447 runtime_branches_stats[cpu].n != 0) {
448 total = avg_stats(&runtime_branches_stats[cpu]);
Anton Blanchard11018202009-10-18 22:29:23 +1100449
450 if (total)
451 ratio = avg * 100 / total;
452
Ingo Molnardd86e722009-10-19 13:33:03 +0200453 fprintf(stderr, " # %10.3f %% ", ratio);
Anton Blanchard11018202009-10-18 22:29:23 +1100454
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200455 } else if (runtime_nsecs_stats[cpu].n != 0) {
456 total = avg_stats(&runtime_nsecs_stats[cpu]);
Ingo Molnarc7f7fea2009-09-22 14:53:51 +0200457
458 if (total)
459 ratio = 1000.0 * avg / total;
460
461 fprintf(stderr, " # %10.3f M/sec", ratio);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200462 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200463}
464
465/*
466 * Print out the results of a single counter:
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200467 * aggregated counts in system-wide mode
Ingo Molnar42202dd2009-06-13 14:57:28 +0200468 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200469static void print_counter_aggr(struct perf_evsel *counter)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200470{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200471 struct perf_stat *ps = counter->priv;
472 double avg = avg_stats(&ps->res_stats[0]);
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200473 int scaled = counter->counts->scaled;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200474
Ingo Molnar42202dd2009-06-13 14:57:28 +0200475 if (scaled == -1) {
Stephane Eranian023695d2011-02-14 11:20:01 +0200476 fprintf(stderr, "%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200477 csv_output ? 0 : 18,
Stephane Eranian023695d2011-02-14 11:20:01 +0200478 "<not counted>",
479 csv_sep,
480 csv_output ? 0 : -24,
481 event_name(counter));
482
483 if (counter->cgrp)
484 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
485
486 fputc('\n', stderr);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200487 return;
488 }
489
490 if (nsec_counter(counter))
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200491 nsec_printout(-1, counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200492 else
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200493 abs_printout(-1, counter, avg);
Peter Zijlstra849abde2009-09-04 18:23:38 +0200494
Stephane Eraniand7470b62010-12-01 18:49:05 +0200495 if (csv_output) {
496 fputc('\n', stderr);
497 return;
498 }
499
Peter Zijlstra849abde2009-09-04 18:23:38 +0200500 print_noise(counter, avg);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200501
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200502 if (scaled) {
503 double avg_enabled, avg_running;
504
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200505 avg_enabled = avg_stats(&ps->res_stats[1]);
506 avg_running = avg_stats(&ps->res_stats[2]);
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200507
Ingo Molnar210ad392009-06-29 21:50:54 +0200508 fprintf(stderr, " (scaled from %.2f%%)",
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200509 100 * avg_running / avg_enabled);
510 }
Ingo Molnar42202dd2009-06-13 14:57:28 +0200511 fprintf(stderr, "\n");
512}
513
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200514/*
515 * Print out the results of a single counter:
516 * does not use aggregated count in system-wide
517 */
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200518static void print_counter(struct perf_evsel *counter)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200519{
520 u64 ena, run, val;
521 int cpu;
522
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200523 for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200524 val = counter->counts->cpu[cpu].val;
525 ena = counter->counts->cpu[cpu].ena;
526 run = counter->counts->cpu[cpu].run;
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200527 if (run == 0 || ena == 0) {
Stephane Eranian023695d2011-02-14 11:20:01 +0200528 fprintf(stderr, "CPU%*d%s%*s%s%*s",
Stephane Eraniand7470b62010-12-01 18:49:05 +0200529 csv_output ? 0 : -4,
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200530 evsel_list->cpus->map[cpu], csv_sep,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200531 csv_output ? 0 : 18,
532 "<not counted>", csv_sep,
Stephane Eranian023695d2011-02-14 11:20:01 +0200533 csv_output ? 0 : -24,
Stephane Eraniand7470b62010-12-01 18:49:05 +0200534 event_name(counter));
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200535
Stephane Eranian023695d2011-02-14 11:20:01 +0200536 if (counter->cgrp)
537 fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name);
538
539 fputc('\n', stderr);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200540 continue;
541 }
542
543 if (nsec_counter(counter))
544 nsec_printout(cpu, counter, val);
545 else
546 abs_printout(cpu, counter, val);
547
Stephane Eraniand7470b62010-12-01 18:49:05 +0200548 if (!csv_output) {
549 print_noise(counter, 1.0);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200550
Stephane Eraniand7470b62010-12-01 18:49:05 +0200551 if (run != ena) {
552 fprintf(stderr, " (scaled from %.2f%%)",
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200553 100.0 * run / ena);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200554 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200555 }
Stephane Eranian023695d2011-02-14 11:20:01 +0200556 fputc('\n', stderr);
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200557 }
558}
559
Ingo Molnar42202dd2009-06-13 14:57:28 +0200560static void print_stat(int argc, const char **argv)
561{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200562 struct perf_evsel *counter;
563 int i;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200564
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200565 fflush(stdout);
566
Stephane Eraniand7470b62010-12-01 18:49:05 +0200567 if (!csv_output) {
568 fprintf(stderr, "\n");
569 fprintf(stderr, " Performance counter stats for ");
570 if(target_pid == -1 && target_tid == -1) {
571 fprintf(stderr, "\'%s", argv[0]);
572 for (i = 1; i < argc; i++)
573 fprintf(stderr, " %s", argv[i]);
574 } else if (target_pid != -1)
575 fprintf(stderr, "process id \'%d", target_pid);
576 else
577 fprintf(stderr, "thread id \'%d", target_tid);
Ingo Molnar44db76c2009-06-03 19:36:07 +0200578
Stephane Eraniand7470b62010-12-01 18:49:05 +0200579 fprintf(stderr, "\'");
580 if (run_count > 1)
581 fprintf(stderr, " (%d runs)", run_count);
582 fprintf(stderr, ":\n\n");
583 }
Ingo Molnar2996f5d2009-05-29 09:10:54 +0200584
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200585 if (no_aggr) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200586 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200587 print_counter(counter);
588 } else {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200589 list_for_each_entry(counter, &evsel_list->entries, node)
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200590 print_counter_aggr(counter);
591 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200592
Stephane Eraniand7470b62010-12-01 18:49:05 +0200593 if (!csv_output) {
594 fprintf(stderr, "\n");
595 fprintf(stderr, " %18.9f seconds time elapsed",
596 avg_stats(&walltime_nsecs_stats)/1e9);
597 if (run_count > 1) {
598 fprintf(stderr, " ( +- %7.3f%% )",
Peter Zijlstra506d4bc2009-09-04 15:36:12 +0200599 100*stddev_stats(&walltime_nsecs_stats) /
600 avg_stats(&walltime_nsecs_stats));
Stephane Eraniand7470b62010-12-01 18:49:05 +0200601 }
602 fprintf(stderr, "\n\n");
Ingo Molnar566747e2009-06-27 06:24:32 +0200603 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200604}
605
Peter Zijlstraf7b7c262009-06-10 15:55:59 +0200606static volatile int signr = -1;
607
Ingo Molnar52425192009-05-26 09:17:18 +0200608static void skip_signal(int signo)
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200609{
Zhang, Yanmin6be28502010-03-18 11:36:03 -0300610 if(child_pid == -1)
Liming Wang60666c62009-12-31 16:05:50 +0800611 done = 1;
612
Peter Zijlstraf7b7c262009-06-10 15:55:59 +0200613 signr = signo;
614}
615
616static void sig_atexit(void)
617{
Chris Wilson933da832009-10-04 01:35:01 +0100618 if (child_pid != -1)
619 kill(child_pid, SIGTERM);
620
Peter Zijlstraf7b7c262009-06-10 15:55:59 +0200621 if (signr == -1)
622 return;
623
624 signal(signr, SIG_DFL);
625 kill(getpid(), signr);
Ingo Molnar52425192009-05-26 09:17:18 +0200626}
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200627
Ingo Molnar52425192009-05-26 09:17:18 +0200628static const char * const stat_usage[] = {
Liming Wang60666c62009-12-31 16:05:50 +0800629 "perf stat [<options>] [<command>]",
Ingo Molnar52425192009-05-26 09:17:18 +0200630 NULL
631};
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200632
Stephane Eraniand7470b62010-12-01 18:49:05 +0200633static int stat__set_big_num(const struct option *opt __used,
634 const char *s __used, int unset)
635{
636 big_num_opt = unset ? 0 : 1;
637 return 0;
638}
639
Ingo Molnar52425192009-05-26 09:17:18 +0200640static const struct option options[] = {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200641 OPT_CALLBACK('e', "event", &evsel_list, "event",
Thomas Gleixner86847b62009-06-06 12:24:17 +0200642 "event selector. use 'perf list' to list available events",
643 parse_events),
Frederic Weisbeckercfd748a2011-03-14 16:40:30 +0100644 OPT_CALLBACK(0, "filter", &evsel_list, "filter",
645 "event filter", parse_filter),
Stephane Eranian2e6cdf92010-05-12 10:40:01 +0200646 OPT_BOOLEAN('i', "no-inherit", &no_inherit,
647 "child tasks do not inherit counters"),
Ingo Molnar52425192009-05-26 09:17:18 +0200648 OPT_INTEGER('p', "pid", &target_pid,
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300649 "stat events on existing process id"),
650 OPT_INTEGER('t', "tid", &target_tid,
651 "stat events on existing thread id"),
Ingo Molnar52425192009-05-26 09:17:18 +0200652 OPT_BOOLEAN('a', "all-cpus", &system_wide,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530653 "system-wide collection from all CPUs"),
Brice Goglinb26bc5a2009-08-07 10:18:39 +0200654 OPT_BOOLEAN('c', "scale", &scale,
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530655 "scale/normalize counters"),
Ian Munsiec0555642010-04-13 18:37:33 +1000656 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar743ee1f2009-06-07 17:06:46 +0200657 "be more verbose (show counter open errors, etc)"),
Ingo Molnar42202dd2009-06-13 14:57:28 +0200658 OPT_INTEGER('r', "repeat", &run_count,
659 "repeat command and print average + stddev (max: 100)"),
Ingo Molnar0cfb7a12009-06-27 06:10:30 +0200660 OPT_BOOLEAN('n', "null", &null_run,
661 "null run - dont start any counters"),
Stephane Eraniand7470b62010-12-01 18:49:05 +0200662 OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
663 "print large numbers with thousands\' separators",
664 stat__set_big_num),
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200665 OPT_STRING('C', "cpu", &cpu_list, "cpu",
666 "list of cpus to monitor in system-wide"),
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200667 OPT_BOOLEAN('A', "no-aggr", &no_aggr,
668 "disable CPU count aggregation"),
Stephane Eraniand7470b62010-12-01 18:49:05 +0200669 OPT_STRING('x', "field-separator", &csv_sep, "separator",
670 "print counts with custom separator"),
Stephane Eranian023695d2011-02-14 11:20:01 +0200671 OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
672 "monitor event in cgroup name only",
673 parse_cgroups),
Ingo Molnar52425192009-05-26 09:17:18 +0200674 OPT_END()
675};
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200676
Ingo Molnarf37a2912009-07-01 12:37:06 +0200677int cmd_stat(int argc, const char **argv, const char *prefix __used)
Ingo Molnar52425192009-05-26 09:17:18 +0200678{
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200679 struct perf_evsel *pos;
680 int status = -ENOMEM;
Ingo Molnar42202dd2009-06-13 14:57:28 +0200681
Stephane Eranian5af52b52010-05-18 15:00:01 +0200682 setlocale(LC_ALL, "");
683
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200684 evsel_list = perf_evlist__new(NULL, NULL);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200685 if (evsel_list == NULL)
686 return -ENOMEM;
687
Anton Blancharda0541232009-07-22 23:04:12 +1000688 argc = parse_options(argc, argv, options, stat_usage,
689 PARSE_OPT_STOP_AT_NON_OPTION);
Stephane Eraniand7470b62010-12-01 18:49:05 +0200690
691 if (csv_sep)
692 csv_output = true;
693 else
694 csv_sep = DEFAULT_SEPARATOR;
695
696 /*
697 * let the spreadsheet do the pretty-printing
698 */
699 if (csv_output) {
700 /* User explicitely passed -B? */
701 if (big_num_opt == 1) {
702 fprintf(stderr, "-B option not supported with -x\n");
703 usage_with_options(stat_usage, options);
704 } else /* Nope, so disable big number formatting */
705 big_num = false;
706 } else if (big_num_opt == 0) /* User passed --no-big-num */
707 big_num = false;
708
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300709 if (!argc && target_pid == -1 && target_tid == -1)
Ingo Molnar52425192009-05-26 09:17:18 +0200710 usage_with_options(stat_usage, options);
Peter Zijlstra9e9772c2009-09-04 15:36:08 +0200711 if (run_count <= 0)
Ingo Molnar42202dd2009-06-13 14:57:28 +0200712 usage_with_options(stat_usage, options);
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200713
Stephane Eranian023695d2011-02-14 11:20:01 +0200714 /* no_aggr, cgroup are for system-wide only */
715 if ((no_aggr || nr_cgroups) && !system_wide) {
716 fprintf(stderr, "both cgroup and no-aggregation "
717 "modes only available in system-wide mode\n");
718
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200719 usage_with_options(stat_usage, options);
Stephane Eranian023695d2011-02-14 11:20:01 +0200720 }
Stephane Eranianf5b4a9c32010-11-16 11:05:01 +0200721
Jaswinder Singh Rajputc3043562009-06-27 23:49:09 +0530722 /* Set attrs and nr_counters if no event is selected and !null_run */
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200723 if (!null_run && !evsel_list->nr_entries) {
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200724 size_t c;
725
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200726 for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) {
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200727 pos = perf_evsel__new(&default_attrs[c], c);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200728 if (pos == NULL)
729 goto out;
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200730 perf_evlist__add(evsel_list, pos);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200731 }
Jaswinder Singh Rajputc3043562009-06-27 23:49:09 +0530732 }
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200733
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -0200734 if (target_pid != -1)
735 target_tid = target_pid;
736
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200737 evsel_list->threads = thread_map__new(target_pid, target_tid);
738 if (evsel_list->threads == NULL) {
Arnaldo Carvalho de Melo5c98d4662011-01-03 17:53:33 -0200739 pr_err("Problems finding threads of monitor\n");
740 usage_with_options(stat_usage, options);
741 }
742
Paul Mackerrasa12b51c2010-03-10 20:36:09 +1100743 if (system_wide)
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200744 evsel_list->cpus = cpu_map__new(cpu_list);
Paul Mackerrasa12b51c2010-03-10 20:36:09 +1100745 else
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200746 evsel_list->cpus = cpu_map__dummy_new();
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200747
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200748 if (evsel_list->cpus == NULL) {
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -0200749 perror("failed to parse CPUs map");
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200750 usage_with_options(stat_usage, options);
Arnaldo Carvalho de Melo60d567e2011-01-03 17:49:48 -0200751 return -1;
752 }
Stephane Eranianc45c6ea2010-05-28 12:00:01 +0200753
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200754 list_for_each_entry(pos, &evsel_list->entries, node) {
Arnaldo Carvalho de Meloc52b12e2011-01-03 17:45:52 -0200755 if (perf_evsel__alloc_stat_priv(pos) < 0 ||
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200756 perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 ||
757 perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200758 goto out_free_fd;
Zhang, Yanmind6d901c2010-03-18 11:36:05 -0300759 }
760
Ingo Molnar58d7e992009-05-15 11:03:23 +0200761 /*
762 * We dont want to block the signals - that would cause
763 * child tasks to inherit that and Ctrl-C would not work.
764 * What we want is for Ctrl-C to work in the exec()-ed
765 * task, but being ignored by perf stat itself:
766 */
Peter Zijlstraf7b7c262009-06-10 15:55:59 +0200767 atexit(sig_atexit);
Ingo Molnar58d7e992009-05-15 11:03:23 +0200768 signal(SIGINT, skip_signal);
769 signal(SIGALRM, skip_signal);
770 signal(SIGABRT, skip_signal);
771
Ingo Molnar42202dd2009-06-13 14:57:28 +0200772 status = 0;
773 for (run_idx = 0; run_idx < run_count; run_idx++) {
774 if (run_count != 1 && verbose)
Jaswinder Singh Rajput3d632592009-06-24 18:19:34 +0530775 fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200776 status = run_perf_stat(argc, argv);
777 }
778
Arnaldo Carvalho de Melo084ab9f2010-03-22 13:10:28 -0300779 if (status != -1)
780 print_stat(argc, argv);
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200781out_free_fd:
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200782 list_for_each_entry(pos, &evsel_list->entries, node)
Arnaldo Carvalho de Melo69aad6f2011-01-03 16:39:04 -0200783 perf_evsel__free_stat_priv(pos);
Arnaldo Carvalho de Melo7e2ed092011-01-30 11:59:43 -0200784 perf_evlist__delete_maps(evsel_list);
Arnaldo Carvalho de Melo0015e2e2011-02-01 16:18:10 -0200785out:
786 perf_evlist__delete(evsel_list);
Ingo Molnar42202dd2009-06-13 14:57:28 +0200787 return status;
Ingo Molnarddcacfa2009-04-20 15:37:32 +0200788}