Commit | Line | Data |
---|---|---|
ddcacfa0 | 1 | /* |
bf9e1876 IM |
2 | * 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: | |
ddcacfa0 | 8 | |
2cba3ffb | 9 | $ perf stat ./hackbench 10 |
ddcacfa0 | 10 | |
2cba3ffb | 11 | Time: 0.118 |
ddcacfa0 | 12 | |
2cba3ffb | 13 | Performance counter stats for './hackbench 10': |
ddcacfa0 | 14 | |
2cba3ffb IM |
15 | 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 | |
ddcacfa0 | 28 | |
5242519b | 29 | * |
2cba3ffb | 30 | * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
5242519b IM |
31 | * |
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> | |
6e750a8f | 39 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
5242519b IM |
40 | * |
41 | * Released under the GPL v2. (and only v2, not any later version) | |
ddcacfa0 IM |
42 | */ |
43 | ||
1a482f38 | 44 | #include "perf.h" |
16f762a2 | 45 | #include "builtin.h" |
148be2c1 | 46 | #include "util/util.h" |
5242519b IM |
47 | #include "util/parse-options.h" |
48 | #include "util/parse-events.h" | |
8f28827a | 49 | #include "util/event.h" |
361c99a6 | 50 | #include "util/evlist.h" |
69aad6f1 | 51 | #include "util/evsel.h" |
8f28827a | 52 | #include "util/debug.h" |
a5d243d0 | 53 | #include "util/color.h" |
60666c63 | 54 | #include "util/header.h" |
a12b51c4 | 55 | #include "util/cpumap.h" |
d6d901c2 | 56 | #include "util/thread.h" |
fd78260b | 57 | #include "util/thread_map.h" |
ddcacfa0 | 58 | |
ddcacfa0 | 59 | #include <sys/prctl.h> |
42202dd5 | 60 | #include <math.h> |
5af52b51 | 61 | #include <locale.h> |
16c8a109 | 62 | |
d7470b6a | 63 | #define DEFAULT_SEPARATOR " " |
2cee77c4 DA |
64 | #define CNTR_NOT_SUPPORTED "<not supported>" |
65 | #define CNTR_NOT_COUNTED "<not counted>" | |
d7470b6a | 66 | |
cdd6c482 | 67 | static struct perf_event_attr default_attrs[] = { |
ddcacfa0 | 68 | |
56aab464 IM |
69 | { .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 }, | |
f4dbfa8f | 73 | |
56aab464 | 74 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
129c04cb IM |
75 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
76 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, | |
56aab464 | 77 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
56aab464 IM |
78 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
79 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, | |
f4dbfa8f | 80 | |
ddcacfa0 | 81 | }; |
5242519b | 82 | |
c6264def | 83 | /* |
2cba3ffb | 84 | * Detailed stats (-d), covering the L1 and last level data caches: |
c6264def IM |
85 | */ |
86 | static struct perf_event_attr detailed_attrs[] = { | |
87 | ||
c6264def IM |
88 | { .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 | ||
2cba3ffb IM |
113 | /* |
114 | * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: | |
115 | */ | |
116 | static 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 | */ | |
159 | static 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 | ||
361c99a6 ACM |
176 | struct perf_evlist *evsel_list; |
177 | ||
c0555642 | 178 | static bool system_wide = false; |
3d632595 | 179 | static int run_idx = 0; |
ddcacfa0 | 180 | |
3d632595 | 181 | static int run_count = 1; |
2e6cdf99 | 182 | static bool no_inherit = false; |
c0555642 | 183 | static bool scale = true; |
f5b4a9c3 | 184 | static bool no_aggr = false; |
933da83a | 185 | static pid_t target_pid = -1; |
d6d901c2 | 186 | static pid_t target_tid = -1; |
933da83a | 187 | static pid_t child_pid = -1; |
c0555642 | 188 | static bool null_run = false; |
2cba3ffb | 189 | static int detailed_run = 0; |
f9cef0a9 | 190 | static bool sync_run = false; |
201e0b06 | 191 | static bool big_num = true; |
d7470b6a | 192 | static int big_num_opt = -1; |
c45c6ea2 | 193 | static const char *cpu_list; |
d7470b6a SE |
194 | static const char *csv_sep = NULL; |
195 | static bool csv_output = false; | |
43bece79 | 196 | static bool group = false; |
4aa9015f SE |
197 | static const char *output_name = NULL; |
198 | static FILE *output = NULL; | |
56f3bae7 | 199 | static int output_fd; |
5af52b51 | 200 | |
60666c63 LW |
201 | static volatile int done = 0; |
202 | ||
506d4bc8 PZ |
203 | struct stats |
204 | { | |
8a02631a | 205 | double n, mean, M2; |
506d4bc8 | 206 | }; |
42202dd5 | 207 | |
69aad6f1 ACM |
208 | struct perf_stat { |
209 | struct stats res_stats[3]; | |
69aad6f1 ACM |
210 | }; |
211 | ||
c52b12ed | 212 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
69aad6f1 | 213 | { |
c52b12ed | 214 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
69aad6f1 ACM |
215 | return evsel->priv == NULL ? -ENOMEM : 0; |
216 | } | |
217 | ||
218 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) | |
219 | { | |
220 | free(evsel->priv); | |
221 | evsel->priv = NULL; | |
222 | } | |
223 | ||
9e9772c4 PZ |
224 | static void update_stats(struct stats *stats, u64 val) |
225 | { | |
8a02631a | 226 | double delta; |
9e9772c4 | 227 | |
8a02631a PZ |
228 | stats->n++; |
229 | delta = val - stats->mean; | |
230 | stats->mean += delta / stats->n; | |
231 | stats->M2 += delta*(val - stats->mean); | |
9e9772c4 PZ |
232 | } |
233 | ||
506d4bc8 PZ |
234 | static double avg_stats(struct stats *stats) |
235 | { | |
8a02631a | 236 | return stats->mean; |
506d4bc8 | 237 | } |
42202dd5 | 238 | |
506d4bc8 | 239 | /* |
63d40deb PZ |
240 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
241 | * | |
8a02631a PZ |
242 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
243 | * s^2 = ------------------------------- | |
244 | * n - 1 | |
63d40deb PZ |
245 | * |
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 | * | |
506d4bc8 PZ |
254 | */ |
255 | static double stddev_stats(struct stats *stats) | |
256 | { | |
19f47402 JC |
257 | 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; | |
42202dd5 | 264 | |
63d40deb | 265 | return sqrt(variance_mean); |
506d4bc8 | 266 | } |
42202dd5 | 267 | |
f5b4a9c3 SE |
268 | struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
269 | struct stats runtime_cycles_stats[MAX_NR_CPUS]; | |
d3d1e86d IM |
270 | struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS]; |
271 | struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS]; | |
f5b4a9c3 | 272 | struct stats runtime_branches_stats[MAX_NR_CPUS]; |
d58f4c82 | 273 | struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; |
8bb6c79f | 274 | struct stats runtime_l1_dcache_stats[MAX_NR_CPUS]; |
c3305257 IM |
275 | struct stats runtime_l1_icache_stats[MAX_NR_CPUS]; |
276 | struct stats runtime_ll_cache_stats[MAX_NR_CPUS]; | |
277 | struct stats runtime_itlb_cache_stats[MAX_NR_CPUS]; | |
278 | struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS]; | |
506d4bc8 | 279 | struct stats walltime_nsecs_stats; |
be1ac0d8 | 280 | |
727ab04e ACM |
281 | static int create_perf_stat_counter(struct perf_evsel *evsel, |
282 | struct perf_evsel *first) | |
ddcacfa0 | 283 | { |
69aad6f1 | 284 | struct perf_event_attr *attr = &evsel->attr; |
727ab04e ACM |
285 | struct xyarray *group_fd = NULL; |
286 | ||
287 | if (group && evsel != first) | |
288 | group_fd = first->fd; | |
16c8a109 | 289 | |
ddcacfa0 | 290 | if (scale) |
a21ca2ca IM |
291 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
292 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 293 | |
5d2cd909 ACM |
294 | attr->inherit = !no_inherit; |
295 | ||
48290609 | 296 | if (system_wide) |
727ab04e ACM |
297 | return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, |
298 | group, group_fd); | |
48290609 ACM |
299 | if (target_pid == -1 && target_tid == -1) { |
300 | attr->disabled = 1; | |
301 | attr->enable_on_exec = 1; | |
ddcacfa0 | 302 | } |
084ab9f8 | 303 | |
727ab04e ACM |
304 | return perf_evsel__open_per_thread(evsel, evsel_list->threads, |
305 | group, group_fd); | |
ddcacfa0 IM |
306 | } |
307 | ||
c04f5e5d IM |
308 | /* |
309 | * Does the counter have nsecs as a unit? | |
310 | */ | |
daec78a0 | 311 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 312 | { |
daec78a0 ACM |
313 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
314 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
315 | return 1; |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
dcd9936a IM |
320 | /* |
321 | * Update various tracking values we maintain to print | |
322 | * more semantic information such as miss/hit ratios, | |
323 | * instruction rates, etc: | |
324 | */ | |
325 | static 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]); | |
d3d1e86d IM |
331 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
332 | update_stats(&runtime_stalled_cycles_front_stats[0], count[0]); | |
129c04cb | 333 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
d3d1e86d | 334 | update_stats(&runtime_stalled_cycles_back_stats[0], count[0]); |
dcd9936a IM |
335 | 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]); | |
8bb6c79f IM |
339 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
340 | update_stats(&runtime_l1_dcache_stats[0], count[0]); | |
c3305257 IM |
341 | 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]); | |
dcd9936a IM |
349 | } |
350 | ||
c04f5e5d | 351 | /* |
2996f5dd | 352 | * Read out the results of a single counter: |
f5b4a9c3 | 353 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 354 | */ |
c52b12ed | 355 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 356 | { |
69aad6f1 | 357 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
358 | u64 *count = counter->counts->aggr.values; |
359 | int i; | |
2996f5dd | 360 | |
7e2ed097 ACM |
361 | if (__perf_evsel__read(counter, evsel_list->cpus->nr, |
362 | evsel_list->threads->nr, scale) < 0) | |
c52b12ed | 363 | return -1; |
9e9772c4 PZ |
364 | |
365 | for (i = 0; i < 3; i++) | |
69aad6f1 | 366 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
367 | |
368 | if (verbose) { | |
4aa9015f | 369 | fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
9486aa38 | 370 | event_name(counter), count[0], count[1], count[2]); |
9e9772c4 PZ |
371 | } |
372 | ||
be1ac0d8 IM |
373 | /* |
374 | * Save the full runtime - to allow normalization during printout: | |
375 | */ | |
dcd9936a | 376 | update_shadow_stats(counter, count); |
c52b12ed ACM |
377 | |
378 | return 0; | |
f5b4a9c3 SE |
379 | } |
380 | ||
381 | /* | |
382 | * Read out the results of a single counter: | |
383 | * do not aggregate counts across CPUs in system-wide mode | |
384 | */ | |
c52b12ed | 385 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 386 | { |
c52b12ed | 387 | u64 *count; |
f5b4a9c3 | 388 | int cpu; |
f5b4a9c3 | 389 | |
7e2ed097 | 390 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
391 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
392 | return -1; | |
f5b4a9c3 | 393 | |
c52b12ed | 394 | count = counter->counts->cpu[cpu].values; |
f5b4a9c3 | 395 | |
dcd9936a | 396 | update_shadow_stats(counter, count); |
f5b4a9c3 | 397 | } |
c52b12ed ACM |
398 | |
399 | return 0; | |
2996f5dd IM |
400 | } |
401 | ||
f37a291c | 402 | static int run_perf_stat(int argc __used, const char **argv) |
42202dd5 IM |
403 | { |
404 | unsigned long long t0, t1; | |
727ab04e | 405 | struct perf_evsel *counter, *first; |
42202dd5 | 406 | int status = 0; |
051ae7f7 | 407 | int child_ready_pipe[2], go_pipe[2]; |
6be2850e | 408 | const bool forks = (argc > 0); |
051ae7f7 | 409 | char buf; |
42202dd5 | 410 | |
60666c63 | 411 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
051ae7f7 PM |
412 | perror("failed to create pipes"); |
413 | exit(1); | |
414 | } | |
415 | ||
60666c63 | 416 | if (forks) { |
6be2850e | 417 | if ((child_pid = fork()) < 0) |
60666c63 LW |
418 | perror("failed to fork"); |
419 | ||
6be2850e | 420 | if (!child_pid) { |
60666c63 LW |
421 | 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 | } | |
051ae7f7 | 448 | |
d6d901c2 | 449 | if (target_tid == -1 && target_pid == -1 && !system_wide) |
7e2ed097 | 450 | evsel_list->threads->map[0] = child_pid; |
d6d901c2 | 451 | |
051ae7f7 | 452 | /* |
60666c63 | 453 | * Wait for the child to be ready to exec. |
051ae7f7 PM |
454 | */ |
455 | close(child_ready_pipe[1]); | |
60666c63 LW |
456 | close(go_pipe[0]); |
457 | if (read(child_ready_pipe[0], &buf, 1) == -1) | |
a92bef0f | 458 | perror("unable to read pipe"); |
60666c63 | 459 | close(child_ready_pipe[0]); |
051ae7f7 PM |
460 | } |
461 | ||
727ab04e ACM |
462 | first = list_entry(evsel_list->entries.next, struct perf_evsel, node); |
463 | ||
361c99a6 | 464 | list_for_each_entry(counter, &evsel_list->entries, node) { |
727ab04e | 465 | if (create_perf_stat_counter(counter, first) < 0) { |
38f6ae1e AB |
466 | if (errno == EINVAL || errno == ENOSYS || |
467 | errno == ENOENT || errno == EOPNOTSUPP) { | |
c63ca0c0 DA |
468 | if (verbose) |
469 | ui__warning("%s event is not supported by the kernel.\n", | |
470 | event_name(counter)); | |
2cee77c4 | 471 | counter->supported = false; |
ede70290 | 472 | continue; |
c63ca0c0 | 473 | } |
ede70290 IM |
474 | |
475 | if (errno == EPERM || errno == EACCES) { | |
48290609 ACM |
476 | error("You may not have permission to collect %sstats.\n" |
477 | "\t Consider tweaking" | |
478 | " /proc/sys/kernel/perf_event_paranoid or running as root.", | |
479 | system_wide ? "system-wide " : ""); | |
480 | } else { | |
481 | error("open_counter returned with %d (%s). " | |
482 | "/bin/dmesg may provide additional information.\n", | |
483 | errno, strerror(errno)); | |
484 | } | |
485 | if (child_pid != -1) | |
486 | kill(child_pid, SIGTERM); | |
487 | die("Not all events could be opened.\n"); | |
488 | return -1; | |
489 | } | |
2cee77c4 | 490 | counter->supported = true; |
084ab9f8 | 491 | } |
42202dd5 | 492 | |
cfd748ae FW |
493 | if (perf_evlist__set_filters(evsel_list)) { |
494 | error("failed to set filter with %d (%s)\n", errno, | |
495 | strerror(errno)); | |
496 | return -1; | |
497 | } | |
498 | ||
42202dd5 IM |
499 | /* |
500 | * Enable counters and exec the command: | |
501 | */ | |
502 | t0 = rdclock(); | |
42202dd5 | 503 | |
60666c63 LW |
504 | if (forks) { |
505 | close(go_pipe[1]); | |
506 | wait(&status); | |
33e49ea7 AK |
507 | if (WIFSIGNALED(status)) |
508 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 509 | } else { |
6be2850e | 510 | while(!done) sleep(1); |
60666c63 | 511 | } |
42202dd5 | 512 | |
42202dd5 IM |
513 | t1 = rdclock(); |
514 | ||
9e9772c4 | 515 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 516 | |
f5b4a9c3 | 517 | if (no_aggr) { |
361c99a6 | 518 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 519 | read_counter(counter); |
7e2ed097 | 520 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1); |
c52b12ed | 521 | } |
f5b4a9c3 | 522 | } else { |
361c99a6 | 523 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 524 | read_counter_aggr(counter); |
7e2ed097 ACM |
525 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, |
526 | evsel_list->threads->nr); | |
c52b12ed | 527 | } |
f5b4a9c3 | 528 | } |
c52b12ed | 529 | |
42202dd5 IM |
530 | return WEXITSTATUS(status); |
531 | } | |
532 | ||
f99844cb IM |
533 | static void print_noise_pct(double total, double avg) |
534 | { | |
535 | double pct = 0.0; | |
536 | ||
537 | if (avg) | |
538 | pct = 100.0*total/avg; | |
539 | ||
3ae9a34d | 540 | if (csv_output) |
4aa9015f | 541 | fprintf(output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 542 | else if (pct) |
4aa9015f | 543 | fprintf(output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
544 | } |
545 | ||
69aad6f1 | 546 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 547 | { |
69aad6f1 ACM |
548 | struct perf_stat *ps; |
549 | ||
849abde9 PZ |
550 | if (run_count == 1) |
551 | return; | |
552 | ||
69aad6f1 | 553 | ps = evsel->priv; |
f99844cb | 554 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
555 | } |
556 | ||
daec78a0 | 557 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 558 | { |
506d4bc8 | 559 | double msecs = avg / 1e6; |
d7470b6a | 560 | char cpustr[16] = { '\0', }; |
2cba3ffb | 561 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s"; |
44175b6f | 562 | |
f5b4a9c3 | 563 | if (no_aggr) |
d7470b6a SE |
564 | sprintf(cpustr, "CPU%*d%s", |
565 | csv_output ? 0 : -4, | |
7e2ed097 | 566 | evsel_list->cpus->map[cpu], csv_sep); |
d7470b6a | 567 | |
4aa9015f | 568 | fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel)); |
d7470b6a | 569 | |
023695d9 | 570 | if (evsel->cgrp) |
4aa9015f | 571 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 572 | |
d7470b6a SE |
573 | if (csv_output) |
574 | return; | |
44175b6f | 575 | |
daec78a0 | 576 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
4aa9015f SE |
577 | fprintf(output, " # %8.3f CPUs utilized ", |
578 | avg / avg_stats(&walltime_nsecs_stats)); | |
44175b6f IM |
579 | } |
580 | ||
15e6392f NK |
581 | /* used for get_ratio_color() */ |
582 | enum grc_type { | |
583 | GRC_STALLED_CYCLES_FE, | |
584 | GRC_STALLED_CYCLES_BE, | |
585 | GRC_CACHE_MISSES, | |
586 | GRC_MAX_NR | |
587 | }; | |
588 | ||
589 | static const char *get_ratio_color(enum grc_type type, double ratio) | |
590 | { | |
591 | static const double grc_table[GRC_MAX_NR][3] = { | |
592 | [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, | |
593 | [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, | |
594 | [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, | |
595 | }; | |
596 | const char *color = PERF_COLOR_NORMAL; | |
597 | ||
598 | if (ratio > grc_table[type][0]) | |
599 | color = PERF_COLOR_RED; | |
600 | else if (ratio > grc_table[type][1]) | |
601 | color = PERF_COLOR_MAGENTA; | |
602 | else if (ratio > grc_table[type][2]) | |
603 | color = PERF_COLOR_YELLOW; | |
604 | ||
605 | return color; | |
606 | } | |
607 | ||
d3d1e86d IM |
608 | static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg) |
609 | { | |
610 | double total, ratio = 0.0; | |
611 | const char *color; | |
612 | ||
613 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
614 | ||
615 | if (total) | |
616 | ratio = avg / total * 100.0; | |
617 | ||
15e6392f | 618 | color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); |
d3d1e86d | 619 | |
4aa9015f SE |
620 | fprintf(output, " # "); |
621 | color_fprintf(output, color, "%6.2f%%", ratio); | |
622 | fprintf(output, " frontend cycles idle "); | |
d3d1e86d IM |
623 | } |
624 | ||
625 | static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg) | |
a5d243d0 IM |
626 | { |
627 | double total, ratio = 0.0; | |
628 | const char *color; | |
629 | ||
630 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
631 | ||
632 | if (total) | |
633 | ratio = avg / total * 100.0; | |
634 | ||
15e6392f | 635 | color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); |
a5d243d0 | 636 | |
4aa9015f SE |
637 | fprintf(output, " # "); |
638 | color_fprintf(output, color, "%6.2f%%", ratio); | |
639 | fprintf(output, " backend cycles idle "); | |
a5d243d0 IM |
640 | } |
641 | ||
c78df6c1 IM |
642 | static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
643 | { | |
644 | double total, ratio = 0.0; | |
645 | const char *color; | |
646 | ||
647 | total = avg_stats(&runtime_branches_stats[cpu]); | |
648 | ||
649 | if (total) | |
650 | ratio = avg / total * 100.0; | |
651 | ||
15e6392f | 652 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c78df6c1 | 653 | |
4aa9015f SE |
654 | fprintf(output, " # "); |
655 | color_fprintf(output, color, "%6.2f%%", ratio); | |
656 | fprintf(output, " of all branches "); | |
c78df6c1 IM |
657 | } |
658 | ||
8bb6c79f IM |
659 | static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
660 | { | |
661 | double total, ratio = 0.0; | |
662 | const char *color; | |
663 | ||
664 | total = avg_stats(&runtime_l1_dcache_stats[cpu]); | |
665 | ||
666 | if (total) | |
667 | ratio = avg / total * 100.0; | |
668 | ||
15e6392f | 669 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
8bb6c79f | 670 | |
4aa9015f SE |
671 | fprintf(output, " # "); |
672 | color_fprintf(output, color, "%6.2f%%", ratio); | |
673 | fprintf(output, " of all L1-dcache hits "); | |
8bb6c79f IM |
674 | } |
675 | ||
c3305257 IM |
676 | static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg) |
677 | { | |
678 | double total, ratio = 0.0; | |
679 | const char *color; | |
680 | ||
681 | total = avg_stats(&runtime_l1_icache_stats[cpu]); | |
682 | ||
683 | if (total) | |
684 | ratio = avg / total * 100.0; | |
685 | ||
15e6392f | 686 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 687 | |
4aa9015f SE |
688 | fprintf(output, " # "); |
689 | color_fprintf(output, color, "%6.2f%%", ratio); | |
690 | fprintf(output, " of all L1-icache hits "); | |
c3305257 IM |
691 | } |
692 | ||
693 | static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
694 | { | |
695 | double total, ratio = 0.0; | |
696 | const char *color; | |
697 | ||
698 | total = avg_stats(&runtime_dtlb_cache_stats[cpu]); | |
699 | ||
700 | if (total) | |
701 | ratio = avg / total * 100.0; | |
702 | ||
15e6392f | 703 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 704 | |
4aa9015f SE |
705 | fprintf(output, " # "); |
706 | color_fprintf(output, color, "%6.2f%%", ratio); | |
707 | fprintf(output, " of all dTLB cache hits "); | |
c3305257 IM |
708 | } |
709 | ||
710 | static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
711 | { | |
712 | double total, ratio = 0.0; | |
713 | const char *color; | |
714 | ||
715 | total = avg_stats(&runtime_itlb_cache_stats[cpu]); | |
716 | ||
717 | if (total) | |
718 | ratio = avg / total * 100.0; | |
719 | ||
15e6392f | 720 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 721 | |
4aa9015f SE |
722 | fprintf(output, " # "); |
723 | color_fprintf(output, color, "%6.2f%%", ratio); | |
724 | fprintf(output, " of all iTLB cache hits "); | |
c3305257 IM |
725 | } |
726 | ||
727 | static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg) | |
728 | { | |
729 | double total, ratio = 0.0; | |
730 | const char *color; | |
731 | ||
732 | total = avg_stats(&runtime_ll_cache_stats[cpu]); | |
733 | ||
734 | if (total) | |
735 | ratio = avg / total * 100.0; | |
736 | ||
15e6392f | 737 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 738 | |
4aa9015f SE |
739 | fprintf(output, " # "); |
740 | color_fprintf(output, color, "%6.2f%%", ratio); | |
741 | fprintf(output, " of all LL-cache hits "); | |
c3305257 IM |
742 | } |
743 | ||
daec78a0 | 744 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 745 | { |
c7f7fea3 | 746 | double total, ratio = 0.0; |
f5b4a9c3 | 747 | char cpustr[16] = { '\0', }; |
d7470b6a SE |
748 | const char *fmt; |
749 | ||
750 | if (csv_output) | |
751 | fmt = "%s%.0f%s%s"; | |
752 | else if (big_num) | |
2cba3ffb | 753 | fmt = "%s%'18.0f%s%-25s"; |
d7470b6a | 754 | else |
2cba3ffb | 755 | fmt = "%s%18.0f%s%-25s"; |
f5b4a9c3 SE |
756 | |
757 | if (no_aggr) | |
d7470b6a SE |
758 | sprintf(cpustr, "CPU%*d%s", |
759 | csv_output ? 0 : -4, | |
7e2ed097 | 760 | evsel_list->cpus->map[cpu], csv_sep); |
f5b4a9c3 SE |
761 | else |
762 | cpu = 0; | |
c7f7fea3 | 763 | |
4aa9015f | 764 | fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel)); |
d7470b6a | 765 | |
023695d9 | 766 | if (evsel->cgrp) |
4aa9015f | 767 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 768 | |
d7470b6a SE |
769 | if (csv_output) |
770 | return; | |
44175b6f | 771 | |
daec78a0 | 772 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
f5b4a9c3 | 773 | total = avg_stats(&runtime_cycles_stats[cpu]); |
c7f7fea3 IM |
774 | |
775 | if (total) | |
776 | ratio = avg / total; | |
777 | ||
4aa9015f | 778 | fprintf(output, " # %5.2f insns per cycle ", ratio); |
481f988a | 779 | |
d3d1e86d IM |
780 | total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]); |
781 | total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu])); | |
481f988a IM |
782 | |
783 | if (total && avg) { | |
784 | ratio = total / avg; | |
4aa9015f | 785 | fprintf(output, "\n # %5.2f stalled cycles per insn", ratio); |
481f988a IM |
786 | } |
787 | ||
daec78a0 | 788 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
f5b4a9c3 | 789 | runtime_branches_stats[cpu].n != 0) { |
c78df6c1 | 790 | print_branch_misses(cpu, evsel, avg); |
8bb6c79f IM |
791 | } else if ( |
792 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
793 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | | |
794 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
795 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
c6264def | 796 | runtime_l1_dcache_stats[cpu].n != 0) { |
8bb6c79f | 797 | print_l1_dcache_misses(cpu, evsel, avg); |
c3305257 IM |
798 | } else if ( |
799 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
800 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | | |
801 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
802 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
803 | runtime_l1_icache_stats[cpu].n != 0) { | |
804 | print_l1_icache_misses(cpu, evsel, avg); | |
805 | } else if ( | |
806 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
807 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | | |
808 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
809 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
810 | runtime_dtlb_cache_stats[cpu].n != 0) { | |
811 | print_dtlb_cache_misses(cpu, evsel, avg); | |
812 | } else if ( | |
813 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
814 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | | |
815 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
816 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
817 | runtime_itlb_cache_stats[cpu].n != 0) { | |
818 | print_itlb_cache_misses(cpu, evsel, avg); | |
819 | } else if ( | |
820 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
821 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | | |
822 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
823 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
824 | runtime_ll_cache_stats[cpu].n != 0) { | |
825 | print_ll_cache_misses(cpu, evsel, avg); | |
d58f4c82 IM |
826 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
827 | runtime_cacherefs_stats[cpu].n != 0) { | |
828 | total = avg_stats(&runtime_cacherefs_stats[cpu]); | |
829 | ||
830 | if (total) | |
831 | ratio = avg * 100 / total; | |
832 | ||
4aa9015f | 833 | fprintf(output, " # %8.3f %% of all cache refs ", ratio); |
d58f4c82 | 834 | |
d3d1e86d IM |
835 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
836 | print_stalled_cycles_frontend(cpu, evsel, avg); | |
129c04cb | 837 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
d3d1e86d | 838 | print_stalled_cycles_backend(cpu, evsel, avg); |
481f988a | 839 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
f5b4a9c3 | 840 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
c7f7fea3 IM |
841 | |
842 | if (total) | |
481f988a | 843 | ratio = 1.0 * avg / total; |
c7f7fea3 | 844 | |
4aa9015f | 845 | fprintf(output, " # %8.3f GHz ", ratio); |
481f988a IM |
846 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
847 | total = avg_stats(&runtime_nsecs_stats[cpu]); | |
11ba2b85 IM |
848 | |
849 | if (total) | |
481f988a | 850 | ratio = 1000.0 * avg / total; |
11ba2b85 | 851 | |
4aa9015f | 852 | fprintf(output, " # %8.3f M/sec ", ratio); |
a5d243d0 | 853 | } else { |
4aa9015f | 854 | fprintf(output, " "); |
44175b6f | 855 | } |
44175b6f IM |
856 | } |
857 | ||
2996f5dd IM |
858 | /* |
859 | * Print out the results of a single counter: | |
f5b4a9c3 | 860 | * aggregated counts in system-wide mode |
2996f5dd | 861 | */ |
69aad6f1 | 862 | static void print_counter_aggr(struct perf_evsel *counter) |
2996f5dd | 863 | { |
69aad6f1 ACM |
864 | struct perf_stat *ps = counter->priv; |
865 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 866 | int scaled = counter->counts->scaled; |
2996f5dd | 867 | |
2996f5dd | 868 | if (scaled == -1) { |
4aa9015f | 869 | fprintf(output, "%*s%s%*s", |
d7470b6a | 870 | csv_output ? 0 : 18, |
2cee77c4 | 871 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
023695d9 SE |
872 | csv_sep, |
873 | csv_output ? 0 : -24, | |
874 | event_name(counter)); | |
875 | ||
876 | if (counter->cgrp) | |
4aa9015f | 877 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 878 | |
4aa9015f | 879 | fputc('\n', output); |
2996f5dd IM |
880 | return; |
881 | } | |
c04f5e5d | 882 | |
44175b6f | 883 | if (nsec_counter(counter)) |
f5b4a9c3 | 884 | nsec_printout(-1, counter, avg); |
44175b6f | 885 | else |
f5b4a9c3 | 886 | abs_printout(-1, counter, avg); |
849abde9 | 887 | |
3ae9a34d ZH |
888 | print_noise(counter, avg); |
889 | ||
d7470b6a | 890 | if (csv_output) { |
4aa9015f | 891 | fputc('\n', output); |
d7470b6a SE |
892 | return; |
893 | } | |
894 | ||
506d4bc8 PZ |
895 | if (scaled) { |
896 | double avg_enabled, avg_running; | |
897 | ||
69aad6f1 ACM |
898 | avg_enabled = avg_stats(&ps->res_stats[1]); |
899 | avg_running = avg_stats(&ps->res_stats[2]); | |
d7c29318 | 900 | |
4aa9015f | 901 | fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled); |
506d4bc8 | 902 | } |
4aa9015f | 903 | fprintf(output, "\n"); |
c04f5e5d IM |
904 | } |
905 | ||
f5b4a9c3 SE |
906 | /* |
907 | * Print out the results of a single counter: | |
908 | * does not use aggregated count in system-wide | |
909 | */ | |
69aad6f1 | 910 | static void print_counter(struct perf_evsel *counter) |
f5b4a9c3 SE |
911 | { |
912 | u64 ena, run, val; | |
913 | int cpu; | |
914 | ||
7e2ed097 | 915 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
916 | val = counter->counts->cpu[cpu].val; |
917 | ena = counter->counts->cpu[cpu].ena; | |
918 | run = counter->counts->cpu[cpu].run; | |
f5b4a9c3 | 919 | if (run == 0 || ena == 0) { |
4aa9015f | 920 | fprintf(output, "CPU%*d%s%*s%s%*s", |
d7470b6a | 921 | csv_output ? 0 : -4, |
7e2ed097 | 922 | evsel_list->cpus->map[cpu], csv_sep, |
d7470b6a | 923 | csv_output ? 0 : 18, |
2cee77c4 DA |
924 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
925 | csv_sep, | |
023695d9 | 926 | csv_output ? 0 : -24, |
d7470b6a | 927 | event_name(counter)); |
f5b4a9c3 | 928 | |
023695d9 | 929 | if (counter->cgrp) |
4aa9015f SE |
930 | fprintf(output, "%s%s", |
931 | csv_sep, counter->cgrp->name); | |
023695d9 | 932 | |
4aa9015f | 933 | fputc('\n', output); |
f5b4a9c3 SE |
934 | continue; |
935 | } | |
936 | ||
937 | if (nsec_counter(counter)) | |
938 | nsec_printout(cpu, counter, val); | |
939 | else | |
940 | abs_printout(cpu, counter, val); | |
941 | ||
d7470b6a SE |
942 | if (!csv_output) { |
943 | print_noise(counter, 1.0); | |
f5b4a9c3 | 944 | |
c6264def | 945 | if (run != ena) |
4aa9015f SE |
946 | fprintf(output, " (%.2f%%)", |
947 | 100.0 * run / ena); | |
f5b4a9c3 | 948 | } |
4aa9015f | 949 | fputc('\n', output); |
f5b4a9c3 SE |
950 | } |
951 | } | |
952 | ||
42202dd5 IM |
953 | static void print_stat(int argc, const char **argv) |
954 | { | |
69aad6f1 ACM |
955 | struct perf_evsel *counter; |
956 | int i; | |
42202dd5 | 957 | |
ddcacfa0 IM |
958 | fflush(stdout); |
959 | ||
d7470b6a | 960 | if (!csv_output) { |
4aa9015f SE |
961 | fprintf(output, "\n"); |
962 | fprintf(output, " Performance counter stats for "); | |
d7470b6a | 963 | if(target_pid == -1 && target_tid == -1) { |
4aa9015f | 964 | fprintf(output, "\'%s", argv[0]); |
d7470b6a | 965 | for (i = 1; i < argc; i++) |
4aa9015f | 966 | fprintf(output, " %s", argv[i]); |
d7470b6a | 967 | } else if (target_pid != -1) |
4aa9015f | 968 | fprintf(output, "process id \'%d", target_pid); |
d7470b6a | 969 | else |
4aa9015f | 970 | fprintf(output, "thread id \'%d", target_tid); |
44db76c8 | 971 | |
4aa9015f | 972 | fprintf(output, "\'"); |
d7470b6a | 973 | if (run_count > 1) |
4aa9015f SE |
974 | fprintf(output, " (%d runs)", run_count); |
975 | fprintf(output, ":\n\n"); | |
d7470b6a | 976 | } |
2996f5dd | 977 | |
f5b4a9c3 | 978 | if (no_aggr) { |
361c99a6 | 979 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
980 | print_counter(counter); |
981 | } else { | |
361c99a6 | 982 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
983 | print_counter_aggr(counter); |
984 | } | |
ddcacfa0 | 985 | |
d7470b6a | 986 | if (!csv_output) { |
c3305257 | 987 | if (!null_run) |
4aa9015f SE |
988 | fprintf(output, "\n"); |
989 | fprintf(output, " %17.9f seconds time elapsed", | |
d7470b6a SE |
990 | avg_stats(&walltime_nsecs_stats)/1e9); |
991 | if (run_count > 1) { | |
4aa9015f | 992 | fprintf(output, " "); |
f99844cb IM |
993 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
994 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a | 995 | } |
4aa9015f | 996 | fprintf(output, "\n\n"); |
566747e6 | 997 | } |
ddcacfa0 IM |
998 | } |
999 | ||
f7b7c26e PZ |
1000 | static volatile int signr = -1; |
1001 | ||
5242519b | 1002 | static void skip_signal(int signo) |
ddcacfa0 | 1003 | { |
6be2850e | 1004 | if(child_pid == -1) |
60666c63 LW |
1005 | done = 1; |
1006 | ||
f7b7c26e PZ |
1007 | signr = signo; |
1008 | } | |
1009 | ||
1010 | static void sig_atexit(void) | |
1011 | { | |
933da83a CW |
1012 | if (child_pid != -1) |
1013 | kill(child_pid, SIGTERM); | |
1014 | ||
f7b7c26e PZ |
1015 | if (signr == -1) |
1016 | return; | |
1017 | ||
1018 | signal(signr, SIG_DFL); | |
1019 | kill(getpid(), signr); | |
5242519b IM |
1020 | } |
1021 | ||
1022 | static const char * const stat_usage[] = { | |
60666c63 | 1023 | "perf stat [<options>] [<command>]", |
5242519b IM |
1024 | NULL |
1025 | }; | |
1026 | ||
d7470b6a SE |
1027 | static int stat__set_big_num(const struct option *opt __used, |
1028 | const char *s __used, int unset) | |
1029 | { | |
1030 | big_num_opt = unset ? 0 : 1; | |
1031 | return 0; | |
1032 | } | |
1033 | ||
4aa9015f SE |
1034 | static bool append_file; |
1035 | ||
5242519b | 1036 | static const struct option options[] = { |
361c99a6 | 1037 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 | 1038 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1039 | parse_events_option), |
cfd748ae FW |
1040 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
1041 | "event filter", parse_filter), | |
2e6cdf99 SE |
1042 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
1043 | "child tasks do not inherit counters"), | |
5242519b | 1044 | OPT_INTEGER('p', "pid", &target_pid, |
d6d901c2 ZY |
1045 | "stat events on existing process id"), |
1046 | OPT_INTEGER('t', "tid", &target_tid, | |
1047 | "stat events on existing thread id"), | |
5242519b | 1048 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
3d632595 | 1049 | "system-wide collection from all CPUs"), |
43bece79 LM |
1050 | OPT_BOOLEAN('g', "group", &group, |
1051 | "put the counters into a counter group"), | |
b26bc5a7 | 1052 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 1053 | "scale/normalize counters"), |
c0555642 | 1054 | OPT_INCR('v', "verbose", &verbose, |
743ee1f8 | 1055 | "be more verbose (show counter open errors, etc)"), |
42202dd5 IM |
1056 | OPT_INTEGER('r', "repeat", &run_count, |
1057 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
1058 | OPT_BOOLEAN('n', "null", &null_run, |
1059 | "null run - dont start any counters"), | |
2cba3ffb | 1060 | OPT_INCR('d', "detailed", &detailed_run, |
c6264def | 1061 | "detailed run - start a lot of events"), |
f9cef0a9 IM |
1062 | OPT_BOOLEAN('S', "sync", &sync_run, |
1063 | "call sync() before starting a run"), | |
d7470b6a SE |
1064 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
1065 | "print large numbers with thousands\' separators", | |
1066 | stat__set_big_num), | |
c45c6ea2 SE |
1067 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
1068 | "list of cpus to monitor in system-wide"), | |
f5b4a9c3 SE |
1069 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
1070 | "disable CPU count aggregation"), | |
d7470b6a SE |
1071 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1072 | "print counts with custom separator"), | |
023695d9 SE |
1073 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
1074 | "monitor event in cgroup name only", | |
1075 | parse_cgroups), | |
4aa9015f SE |
1076 | OPT_STRING('o', "output", &output_name, "file", |
1077 | "output file name"), | |
1078 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
56f3bae7 JC |
1079 | OPT_INTEGER(0, "log-fd", &output_fd, |
1080 | "log output to fd, instead of stderr"), | |
5242519b IM |
1081 | OPT_END() |
1082 | }; | |
1083 | ||
2cba3ffb IM |
1084 | /* |
1085 | * Add default attributes, if there were no attributes specified or | |
1086 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1087 | */ | |
1088 | static int add_default_attributes(void) | |
1089 | { | |
2cba3ffb IM |
1090 | /* Set attrs if no event is selected and !null_run: */ |
1091 | if (null_run) | |
1092 | return 0; | |
1093 | ||
1094 | if (!evsel_list->nr_entries) { | |
50d08e47 ACM |
1095 | if (perf_evlist__add_attrs_array(evsel_list, default_attrs) < 0) |
1096 | return -1; | |
2cba3ffb IM |
1097 | } |
1098 | ||
1099 | /* Detailed events get appended to the event list: */ | |
1100 | ||
1101 | if (detailed_run < 1) | |
1102 | return 0; | |
1103 | ||
1104 | /* Append detailed run extra attributes: */ | |
50d08e47 ACM |
1105 | if (perf_evlist__add_attrs_array(evsel_list, detailed_attrs) < 0) |
1106 | return -1; | |
2cba3ffb IM |
1107 | |
1108 | if (detailed_run < 2) | |
1109 | return 0; | |
1110 | ||
1111 | /* Append very detailed run extra attributes: */ | |
50d08e47 ACM |
1112 | if (perf_evlist__add_attrs_array(evsel_list, very_detailed_attrs) < 0) |
1113 | return -1; | |
2cba3ffb IM |
1114 | |
1115 | if (detailed_run < 3) | |
1116 | return 0; | |
1117 | ||
1118 | /* Append very, very detailed run extra attributes: */ | |
50d08e47 | 1119 | return perf_evlist__add_attrs_array(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1120 | } |
1121 | ||
f37a291c | 1122 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
5242519b | 1123 | { |
69aad6f1 ACM |
1124 | struct perf_evsel *pos; |
1125 | int status = -ENOMEM; | |
4aa9015f | 1126 | const char *mode; |
42202dd5 | 1127 | |
5af52b51 SE |
1128 | setlocale(LC_ALL, ""); |
1129 | ||
7e2ed097 | 1130 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1131 | if (evsel_list == NULL) |
1132 | return -ENOMEM; | |
1133 | ||
a0541234 AB |
1134 | argc = parse_options(argc, argv, options, stat_usage, |
1135 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a | 1136 | |
4aa9015f SE |
1137 | output = stderr; |
1138 | if (output_name && strcmp(output_name, "-")) | |
1139 | output = NULL; | |
1140 | ||
56f3bae7 JC |
1141 | if (output_name && output_fd) { |
1142 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
1143 | usage_with_options(stat_usage, options); | |
1144 | } | |
4aa9015f SE |
1145 | if (!output) { |
1146 | struct timespec tm; | |
1147 | mode = append_file ? "a" : "w"; | |
1148 | ||
1149 | output = fopen(output_name, mode); | |
1150 | if (!output) { | |
1151 | perror("failed to create output file"); | |
1152 | exit(-1); | |
1153 | } | |
1154 | clock_gettime(CLOCK_REALTIME, &tm); | |
1155 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
56f3bae7 JC |
1156 | } else if (output_fd != 2) { |
1157 | mode = append_file ? "a" : "w"; | |
1158 | output = fdopen(output_fd, mode); | |
1159 | if (!output) { | |
1160 | perror("Failed opening logfd"); | |
1161 | return -errno; | |
1162 | } | |
4aa9015f SE |
1163 | } |
1164 | ||
d4ffd04d | 1165 | if (csv_sep) { |
d7470b6a | 1166 | csv_output = true; |
d4ffd04d JC |
1167 | if (!strcmp(csv_sep, "\\t")) |
1168 | csv_sep = "\t"; | |
1169 | } else | |
d7470b6a SE |
1170 | csv_sep = DEFAULT_SEPARATOR; |
1171 | ||
1172 | /* | |
1173 | * let the spreadsheet do the pretty-printing | |
1174 | */ | |
1175 | if (csv_output) { | |
61a9f324 | 1176 | /* User explicitly passed -B? */ |
d7470b6a SE |
1177 | if (big_num_opt == 1) { |
1178 | fprintf(stderr, "-B option not supported with -x\n"); | |
1179 | usage_with_options(stat_usage, options); | |
1180 | } else /* Nope, so disable big number formatting */ | |
1181 | big_num = false; | |
1182 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1183 | big_num = false; | |
1184 | ||
d6d901c2 | 1185 | if (!argc && target_pid == -1 && target_tid == -1) |
5242519b | 1186 | usage_with_options(stat_usage, options); |
9e9772c4 | 1187 | if (run_count <= 0) |
42202dd5 | 1188 | usage_with_options(stat_usage, options); |
ddcacfa0 | 1189 | |
023695d9 SE |
1190 | /* no_aggr, cgroup are for system-wide only */ |
1191 | if ((no_aggr || nr_cgroups) && !system_wide) { | |
1192 | fprintf(stderr, "both cgroup and no-aggregation " | |
1193 | "modes only available in system-wide mode\n"); | |
1194 | ||
f5b4a9c3 | 1195 | usage_with_options(stat_usage, options); |
023695d9 | 1196 | } |
f5b4a9c3 | 1197 | |
2cba3ffb IM |
1198 | if (add_default_attributes()) |
1199 | goto out; | |
ddcacfa0 | 1200 | |
5c98d466 ACM |
1201 | if (target_pid != -1) |
1202 | target_tid = target_pid; | |
1203 | ||
7e2ed097 ACM |
1204 | evsel_list->threads = thread_map__new(target_pid, target_tid); |
1205 | if (evsel_list->threads == NULL) { | |
5c98d466 ACM |
1206 | pr_err("Problems finding threads of monitor\n"); |
1207 | usage_with_options(stat_usage, options); | |
1208 | } | |
1209 | ||
a12b51c4 | 1210 | if (system_wide) |
7e2ed097 | 1211 | evsel_list->cpus = cpu_map__new(cpu_list); |
a12b51c4 | 1212 | else |
7e2ed097 | 1213 | evsel_list->cpus = cpu_map__dummy_new(); |
ddcacfa0 | 1214 | |
7e2ed097 | 1215 | if (evsel_list->cpus == NULL) { |
60d567e2 | 1216 | perror("failed to parse CPUs map"); |
c45c6ea2 | 1217 | usage_with_options(stat_usage, options); |
60d567e2 ACM |
1218 | return -1; |
1219 | } | |
c45c6ea2 | 1220 | |
361c99a6 | 1221 | list_for_each_entry(pos, &evsel_list->entries, node) { |
c52b12ed | 1222 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
806fb630 | 1223 | perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0) |
69aad6f1 | 1224 | goto out_free_fd; |
d6d901c2 ZY |
1225 | } |
1226 | ||
58d7e993 IM |
1227 | /* |
1228 | * We dont want to block the signals - that would cause | |
1229 | * child tasks to inherit that and Ctrl-C would not work. | |
1230 | * What we want is for Ctrl-C to work in the exec()-ed | |
1231 | * task, but being ignored by perf stat itself: | |
1232 | */ | |
f7b7c26e | 1233 | atexit(sig_atexit); |
58d7e993 IM |
1234 | signal(SIGINT, skip_signal); |
1235 | signal(SIGALRM, skip_signal); | |
1236 | signal(SIGABRT, skip_signal); | |
1237 | ||
42202dd5 IM |
1238 | status = 0; |
1239 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
1240 | if (run_count != 1 && verbose) | |
4aa9015f SE |
1241 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1242 | run_idx + 1); | |
f9cef0a9 IM |
1243 | |
1244 | if (sync_run) | |
1245 | sync(); | |
1246 | ||
42202dd5 IM |
1247 | status = run_perf_stat(argc, argv); |
1248 | } | |
1249 | ||
084ab9f8 ACM |
1250 | if (status != -1) |
1251 | print_stat(argc, argv); | |
69aad6f1 | 1252 | out_free_fd: |
361c99a6 | 1253 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1254 | perf_evsel__free_stat_priv(pos); |
7e2ed097 | 1255 | perf_evlist__delete_maps(evsel_list); |
0015e2e1 ACM |
1256 | out: |
1257 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1258 | return status; |
ddcacfa0 | 1259 | } |