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" |
0007ecea | 54 | #include "util/stat.h" |
60666c63 | 55 | #include "util/header.h" |
a12b51c4 | 56 | #include "util/cpumap.h" |
d6d901c2 | 57 | #include "util/thread.h" |
fd78260b | 58 | #include "util/thread_map.h" |
ddcacfa0 | 59 | |
ddcacfa0 | 60 | #include <sys/prctl.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 | ||
666e6d48 | 176 | static struct perf_evlist *evsel_list; |
361c99a6 | 177 | |
77a6f014 NK |
178 | static struct perf_target target = { |
179 | .uid = UINT_MAX, | |
180 | }; | |
ddcacfa0 | 181 | |
20f946b4 | 182 | static int run_idx = 0; |
3d632595 | 183 | static int run_count = 1; |
2e6cdf99 | 184 | static bool no_inherit = false; |
c0555642 | 185 | static bool scale = true; |
f5b4a9c3 | 186 | static bool no_aggr = false; |
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; |
d7470b6a SE |
193 | static const char *csv_sep = NULL; |
194 | static bool csv_output = false; | |
43bece79 | 195 | static bool group = false; |
4aa9015f SE |
196 | static const char *output_name = NULL; |
197 | static FILE *output = NULL; | |
56f3bae7 | 198 | static int output_fd; |
5af52b51 | 199 | |
60666c63 LW |
200 | static volatile int done = 0; |
201 | ||
69aad6f1 ACM |
202 | struct perf_stat { |
203 | struct stats res_stats[3]; | |
69aad6f1 ACM |
204 | }; |
205 | ||
c52b12ed | 206 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
69aad6f1 | 207 | { |
c52b12ed | 208 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
69aad6f1 ACM |
209 | return evsel->priv == NULL ? -ENOMEM : 0; |
210 | } | |
211 | ||
212 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) | |
213 | { | |
214 | free(evsel->priv); | |
215 | evsel->priv = NULL; | |
216 | } | |
217 | ||
7ae92e74 YZ |
218 | static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel) |
219 | { | |
220 | return (evsel->cpus && !target.cpu_list) ? evsel->cpus : evsel_list->cpus; | |
221 | } | |
222 | ||
223 | static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel) | |
224 | { | |
225 | return perf_evsel__cpus(evsel)->nr; | |
226 | } | |
227 | ||
666e6d48 RR |
228 | static struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
229 | static struct stats runtime_cycles_stats[MAX_NR_CPUS]; | |
230 | static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS]; | |
231 | static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS]; | |
232 | static struct stats runtime_branches_stats[MAX_NR_CPUS]; | |
233 | static struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; | |
234 | static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS]; | |
235 | static struct stats runtime_l1_icache_stats[MAX_NR_CPUS]; | |
236 | static struct stats runtime_ll_cache_stats[MAX_NR_CPUS]; | |
237 | static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS]; | |
238 | static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS]; | |
239 | static struct stats walltime_nsecs_stats; | |
be1ac0d8 | 240 | |
727ab04e ACM |
241 | static int create_perf_stat_counter(struct perf_evsel *evsel, |
242 | struct perf_evsel *first) | |
ddcacfa0 | 243 | { |
69aad6f1 | 244 | struct perf_event_attr *attr = &evsel->attr; |
5622c07b SE |
245 | bool exclude_guest_missing = false; |
246 | int ret; | |
727ab04e | 247 | |
ddcacfa0 | 248 | if (scale) |
a21ca2ca IM |
249 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
250 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 251 | |
5d2cd909 ACM |
252 | attr->inherit = !no_inherit; |
253 | ||
5622c07b SE |
254 | retry: |
255 | if (exclude_guest_missing) | |
256 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
257 | ||
16ee6576 | 258 | if (perf_target__has_cpu(&target)) { |
7ae92e74 | 259 | ret = perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel)); |
5622c07b SE |
260 | if (ret) |
261 | goto check_ret; | |
262 | return 0; | |
263 | } | |
264 | ||
aa22dd49 | 265 | if (!perf_target__has_task(&target) && (!group || evsel == first)) { |
48290609 ACM |
266 | attr->disabled = 1; |
267 | attr->enable_on_exec = 1; | |
ddcacfa0 | 268 | } |
084ab9f8 | 269 | |
6a4bb04c | 270 | ret = perf_evsel__open_per_thread(evsel, evsel_list->threads); |
5622c07b SE |
271 | if (!ret) |
272 | return 0; | |
273 | /* fall through */ | |
274 | check_ret: | |
275 | if (ret && errno == EINVAL) { | |
276 | if (!exclude_guest_missing && | |
277 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
278 | pr_debug("Old kernel, cannot exclude " | |
279 | "guest or host samples.\n"); | |
280 | exclude_guest_missing = true; | |
281 | goto retry; | |
282 | } | |
283 | } | |
284 | return ret; | |
ddcacfa0 IM |
285 | } |
286 | ||
c04f5e5d IM |
287 | /* |
288 | * Does the counter have nsecs as a unit? | |
289 | */ | |
daec78a0 | 290 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 291 | { |
daec78a0 ACM |
292 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
293 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
294 | return 1; |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
dcd9936a IM |
299 | /* |
300 | * Update various tracking values we maintain to print | |
301 | * more semantic information such as miss/hit ratios, | |
302 | * instruction rates, etc: | |
303 | */ | |
304 | static void update_shadow_stats(struct perf_evsel *counter, u64 *count) | |
305 | { | |
306 | if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) | |
307 | update_stats(&runtime_nsecs_stats[0], count[0]); | |
308 | else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) | |
309 | update_stats(&runtime_cycles_stats[0], count[0]); | |
d3d1e86d IM |
310 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
311 | update_stats(&runtime_stalled_cycles_front_stats[0], count[0]); | |
129c04cb | 312 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
d3d1e86d | 313 | update_stats(&runtime_stalled_cycles_back_stats[0], count[0]); |
dcd9936a IM |
314 | else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
315 | update_stats(&runtime_branches_stats[0], count[0]); | |
316 | else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) | |
317 | update_stats(&runtime_cacherefs_stats[0], count[0]); | |
8bb6c79f IM |
318 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
319 | update_stats(&runtime_l1_dcache_stats[0], count[0]); | |
c3305257 IM |
320 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) |
321 | update_stats(&runtime_l1_icache_stats[0], count[0]); | |
322 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL)) | |
323 | update_stats(&runtime_ll_cache_stats[0], count[0]); | |
324 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) | |
325 | update_stats(&runtime_dtlb_cache_stats[0], count[0]); | |
326 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) | |
327 | update_stats(&runtime_itlb_cache_stats[0], count[0]); | |
dcd9936a IM |
328 | } |
329 | ||
c04f5e5d | 330 | /* |
2996f5dd | 331 | * Read out the results of a single counter: |
f5b4a9c3 | 332 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 333 | */ |
c52b12ed | 334 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 335 | { |
69aad6f1 | 336 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
337 | u64 *count = counter->counts->aggr.values; |
338 | int i; | |
2996f5dd | 339 | |
7ae92e74 | 340 | if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter), |
7e2ed097 | 341 | evsel_list->threads->nr, scale) < 0) |
c52b12ed | 342 | return -1; |
9e9772c4 PZ |
343 | |
344 | for (i = 0; i < 3; i++) | |
69aad6f1 | 345 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
346 | |
347 | if (verbose) { | |
4aa9015f | 348 | fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
7289f83c | 349 | perf_evsel__name(counter), count[0], count[1], count[2]); |
9e9772c4 PZ |
350 | } |
351 | ||
be1ac0d8 IM |
352 | /* |
353 | * Save the full runtime - to allow normalization during printout: | |
354 | */ | |
dcd9936a | 355 | update_shadow_stats(counter, count); |
c52b12ed ACM |
356 | |
357 | return 0; | |
f5b4a9c3 SE |
358 | } |
359 | ||
360 | /* | |
361 | * Read out the results of a single counter: | |
362 | * do not aggregate counts across CPUs in system-wide mode | |
363 | */ | |
c52b12ed | 364 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 365 | { |
c52b12ed | 366 | u64 *count; |
f5b4a9c3 | 367 | int cpu; |
f5b4a9c3 | 368 | |
7ae92e74 | 369 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { |
c52b12ed ACM |
370 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
371 | return -1; | |
f5b4a9c3 | 372 | |
c52b12ed | 373 | count = counter->counts->cpu[cpu].values; |
f5b4a9c3 | 374 | |
dcd9936a | 375 | update_shadow_stats(counter, count); |
f5b4a9c3 | 376 | } |
c52b12ed ACM |
377 | |
378 | return 0; | |
2996f5dd IM |
379 | } |
380 | ||
1d037ca1 | 381 | static int run_perf_stat(int argc __maybe_unused, const char **argv) |
42202dd5 IM |
382 | { |
383 | unsigned long long t0, t1; | |
727ab04e | 384 | struct perf_evsel *counter, *first; |
42202dd5 | 385 | int status = 0; |
051ae7f7 | 386 | int child_ready_pipe[2], go_pipe[2]; |
6be2850e | 387 | const bool forks = (argc > 0); |
051ae7f7 | 388 | char buf; |
42202dd5 | 389 | |
60666c63 | 390 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
051ae7f7 | 391 | perror("failed to create pipes"); |
fceda7fe | 392 | return -1; |
051ae7f7 PM |
393 | } |
394 | ||
60666c63 | 395 | if (forks) { |
6be2850e | 396 | if ((child_pid = fork()) < 0) |
60666c63 LW |
397 | perror("failed to fork"); |
398 | ||
6be2850e | 399 | if (!child_pid) { |
60666c63 LW |
400 | close(child_ready_pipe[0]); |
401 | close(go_pipe[1]); | |
402 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
403 | ||
404 | /* | |
405 | * Do a dummy execvp to get the PLT entry resolved, | |
406 | * so we avoid the resolver overhead on the real | |
407 | * execvp call. | |
408 | */ | |
409 | execvp("", (char **)argv); | |
410 | ||
411 | /* | |
412 | * Tell the parent we're ready to go | |
413 | */ | |
414 | close(child_ready_pipe[1]); | |
415 | ||
416 | /* | |
417 | * Wait until the parent tells us to go. | |
418 | */ | |
419 | if (read(go_pipe[0], &buf, 1) == -1) | |
420 | perror("unable to read pipe"); | |
421 | ||
422 | execvp(argv[0], (char **)argv); | |
423 | ||
424 | perror(argv[0]); | |
425 | exit(-1); | |
426 | } | |
051ae7f7 | 427 | |
d67356e7 | 428 | if (perf_target__none(&target)) |
7e2ed097 | 429 | evsel_list->threads->map[0] = child_pid; |
d6d901c2 | 430 | |
051ae7f7 | 431 | /* |
60666c63 | 432 | * Wait for the child to be ready to exec. |
051ae7f7 PM |
433 | */ |
434 | close(child_ready_pipe[1]); | |
60666c63 LW |
435 | close(go_pipe[0]); |
436 | if (read(child_ready_pipe[0], &buf, 1) == -1) | |
a92bef0f | 437 | perror("unable to read pipe"); |
60666c63 | 438 | close(child_ready_pipe[0]); |
051ae7f7 PM |
439 | } |
440 | ||
6a4bb04c | 441 | if (group) |
63dab225 | 442 | perf_evlist__set_leader(evsel_list); |
6a4bb04c | 443 | |
0c21f736 | 444 | first = perf_evlist__first(evsel_list); |
727ab04e | 445 | |
361c99a6 | 446 | list_for_each_entry(counter, &evsel_list->entries, node) { |
727ab04e | 447 | if (create_perf_stat_counter(counter, first) < 0) { |
979987a5 DA |
448 | /* |
449 | * PPC returns ENXIO for HW counters until 2.6.37 | |
450 | * (behavior changed with commit b0a873e). | |
451 | */ | |
38f6ae1e | 452 | if (errno == EINVAL || errno == ENOSYS || |
979987a5 DA |
453 | errno == ENOENT || errno == EOPNOTSUPP || |
454 | errno == ENXIO) { | |
c63ca0c0 DA |
455 | if (verbose) |
456 | ui__warning("%s event is not supported by the kernel.\n", | |
7289f83c | 457 | perf_evsel__name(counter)); |
2cee77c4 | 458 | counter->supported = false; |
ede70290 | 459 | continue; |
c63ca0c0 | 460 | } |
ede70290 IM |
461 | |
462 | if (errno == EPERM || errno == EACCES) { | |
48290609 ACM |
463 | error("You may not have permission to collect %sstats.\n" |
464 | "\t Consider tweaking" | |
465 | " /proc/sys/kernel/perf_event_paranoid or running as root.", | |
20f946b4 | 466 | target.system_wide ? "system-wide " : ""); |
48290609 ACM |
467 | } else { |
468 | error("open_counter returned with %d (%s). " | |
469 | "/bin/dmesg may provide additional information.\n", | |
470 | errno, strerror(errno)); | |
471 | } | |
472 | if (child_pid != -1) | |
473 | kill(child_pid, SIGTERM); | |
fceda7fe DA |
474 | |
475 | pr_err("Not all events could be opened.\n"); | |
48290609 ACM |
476 | return -1; |
477 | } | |
2cee77c4 | 478 | counter->supported = true; |
084ab9f8 | 479 | } |
42202dd5 | 480 | |
1491a632 | 481 | if (perf_evlist__apply_filters(evsel_list)) { |
cfd748ae FW |
482 | error("failed to set filter with %d (%s)\n", errno, |
483 | strerror(errno)); | |
484 | return -1; | |
485 | } | |
486 | ||
42202dd5 IM |
487 | /* |
488 | * Enable counters and exec the command: | |
489 | */ | |
490 | t0 = rdclock(); | |
42202dd5 | 491 | |
60666c63 LW |
492 | if (forks) { |
493 | close(go_pipe[1]); | |
494 | wait(&status); | |
33e49ea7 AK |
495 | if (WIFSIGNALED(status)) |
496 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 497 | } else { |
6be2850e | 498 | while(!done) sleep(1); |
60666c63 | 499 | } |
42202dd5 | 500 | |
42202dd5 IM |
501 | t1 = rdclock(); |
502 | ||
9e9772c4 | 503 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 504 | |
f5b4a9c3 | 505 | if (no_aggr) { |
361c99a6 | 506 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 507 | read_counter(counter); |
7ae92e74 | 508 | perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), 1); |
c52b12ed | 509 | } |
f5b4a9c3 | 510 | } else { |
361c99a6 | 511 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 512 | read_counter_aggr(counter); |
7ae92e74 | 513 | perf_evsel__close_fd(counter, perf_evsel__nr_cpus(counter), |
7e2ed097 | 514 | evsel_list->threads->nr); |
c52b12ed | 515 | } |
f5b4a9c3 | 516 | } |
c52b12ed | 517 | |
42202dd5 IM |
518 | return WEXITSTATUS(status); |
519 | } | |
520 | ||
f99844cb IM |
521 | static void print_noise_pct(double total, double avg) |
522 | { | |
0007ecea | 523 | double pct = rel_stddev_stats(total, avg); |
f99844cb | 524 | |
3ae9a34d | 525 | if (csv_output) |
4aa9015f | 526 | fprintf(output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 527 | else if (pct) |
4aa9015f | 528 | fprintf(output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
529 | } |
530 | ||
69aad6f1 | 531 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 532 | { |
69aad6f1 ACM |
533 | struct perf_stat *ps; |
534 | ||
849abde9 PZ |
535 | if (run_count == 1) |
536 | return; | |
537 | ||
69aad6f1 | 538 | ps = evsel->priv; |
f99844cb | 539 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
540 | } |
541 | ||
daec78a0 | 542 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 543 | { |
506d4bc8 | 544 | double msecs = avg / 1e6; |
d7470b6a | 545 | char cpustr[16] = { '\0', }; |
2cba3ffb | 546 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s"; |
44175b6f | 547 | |
f5b4a9c3 | 548 | if (no_aggr) |
d7470b6a SE |
549 | sprintf(cpustr, "CPU%*d%s", |
550 | csv_output ? 0 : -4, | |
7ae92e74 | 551 | perf_evsel__cpus(evsel)->map[cpu], csv_sep); |
d7470b6a | 552 | |
7289f83c | 553 | fprintf(output, fmt, cpustr, msecs, csv_sep, perf_evsel__name(evsel)); |
d7470b6a | 554 | |
023695d9 | 555 | if (evsel->cgrp) |
4aa9015f | 556 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 557 | |
d7470b6a SE |
558 | if (csv_output) |
559 | return; | |
44175b6f | 560 | |
daec78a0 | 561 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
4aa9015f SE |
562 | fprintf(output, " # %8.3f CPUs utilized ", |
563 | avg / avg_stats(&walltime_nsecs_stats)); | |
9dac6a29 NK |
564 | else |
565 | fprintf(output, " "); | |
44175b6f IM |
566 | } |
567 | ||
15e6392f NK |
568 | /* used for get_ratio_color() */ |
569 | enum grc_type { | |
570 | GRC_STALLED_CYCLES_FE, | |
571 | GRC_STALLED_CYCLES_BE, | |
572 | GRC_CACHE_MISSES, | |
573 | GRC_MAX_NR | |
574 | }; | |
575 | ||
576 | static const char *get_ratio_color(enum grc_type type, double ratio) | |
577 | { | |
578 | static const double grc_table[GRC_MAX_NR][3] = { | |
579 | [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, | |
580 | [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, | |
581 | [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, | |
582 | }; | |
583 | const char *color = PERF_COLOR_NORMAL; | |
584 | ||
585 | if (ratio > grc_table[type][0]) | |
586 | color = PERF_COLOR_RED; | |
587 | else if (ratio > grc_table[type][1]) | |
588 | color = PERF_COLOR_MAGENTA; | |
589 | else if (ratio > grc_table[type][2]) | |
590 | color = PERF_COLOR_YELLOW; | |
591 | ||
592 | return color; | |
593 | } | |
594 | ||
1d037ca1 IT |
595 | static void print_stalled_cycles_frontend(int cpu, |
596 | struct perf_evsel *evsel | |
597 | __maybe_unused, double avg) | |
d3d1e86d IM |
598 | { |
599 | double total, ratio = 0.0; | |
600 | const char *color; | |
601 | ||
602 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
603 | ||
604 | if (total) | |
605 | ratio = avg / total * 100.0; | |
606 | ||
15e6392f | 607 | color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); |
d3d1e86d | 608 | |
4aa9015f SE |
609 | fprintf(output, " # "); |
610 | color_fprintf(output, color, "%6.2f%%", ratio); | |
611 | fprintf(output, " frontend cycles idle "); | |
d3d1e86d IM |
612 | } |
613 | ||
1d037ca1 IT |
614 | static void print_stalled_cycles_backend(int cpu, |
615 | struct perf_evsel *evsel | |
616 | __maybe_unused, double avg) | |
a5d243d0 IM |
617 | { |
618 | double total, ratio = 0.0; | |
619 | const char *color; | |
620 | ||
621 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
622 | ||
623 | if (total) | |
624 | ratio = avg / total * 100.0; | |
625 | ||
15e6392f | 626 | color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); |
a5d243d0 | 627 | |
4aa9015f SE |
628 | fprintf(output, " # "); |
629 | color_fprintf(output, color, "%6.2f%%", ratio); | |
630 | fprintf(output, " backend cycles idle "); | |
a5d243d0 IM |
631 | } |
632 | ||
1d037ca1 IT |
633 | static void print_branch_misses(int cpu, |
634 | struct perf_evsel *evsel __maybe_unused, | |
635 | double avg) | |
c78df6c1 IM |
636 | { |
637 | double total, ratio = 0.0; | |
638 | const char *color; | |
639 | ||
640 | total = avg_stats(&runtime_branches_stats[cpu]); | |
641 | ||
642 | if (total) | |
643 | ratio = avg / total * 100.0; | |
644 | ||
15e6392f | 645 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c78df6c1 | 646 | |
4aa9015f SE |
647 | fprintf(output, " # "); |
648 | color_fprintf(output, color, "%6.2f%%", ratio); | |
649 | fprintf(output, " of all branches "); | |
c78df6c1 IM |
650 | } |
651 | ||
1d037ca1 IT |
652 | static void print_l1_dcache_misses(int cpu, |
653 | struct perf_evsel *evsel __maybe_unused, | |
654 | double avg) | |
8bb6c79f IM |
655 | { |
656 | double total, ratio = 0.0; | |
657 | const char *color; | |
658 | ||
659 | total = avg_stats(&runtime_l1_dcache_stats[cpu]); | |
660 | ||
661 | if (total) | |
662 | ratio = avg / total * 100.0; | |
663 | ||
15e6392f | 664 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
8bb6c79f | 665 | |
4aa9015f SE |
666 | fprintf(output, " # "); |
667 | color_fprintf(output, color, "%6.2f%%", ratio); | |
668 | fprintf(output, " of all L1-dcache hits "); | |
8bb6c79f IM |
669 | } |
670 | ||
1d037ca1 IT |
671 | static void print_l1_icache_misses(int cpu, |
672 | struct perf_evsel *evsel __maybe_unused, | |
673 | double avg) | |
c3305257 IM |
674 | { |
675 | double total, ratio = 0.0; | |
676 | const char *color; | |
677 | ||
678 | total = avg_stats(&runtime_l1_icache_stats[cpu]); | |
679 | ||
680 | if (total) | |
681 | ratio = avg / total * 100.0; | |
682 | ||
15e6392f | 683 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 684 | |
4aa9015f SE |
685 | fprintf(output, " # "); |
686 | color_fprintf(output, color, "%6.2f%%", ratio); | |
687 | fprintf(output, " of all L1-icache hits "); | |
c3305257 IM |
688 | } |
689 | ||
1d037ca1 IT |
690 | static void print_dtlb_cache_misses(int cpu, |
691 | struct perf_evsel *evsel __maybe_unused, | |
692 | double avg) | |
c3305257 IM |
693 | { |
694 | double total, ratio = 0.0; | |
695 | const char *color; | |
696 | ||
697 | total = avg_stats(&runtime_dtlb_cache_stats[cpu]); | |
698 | ||
699 | if (total) | |
700 | ratio = avg / total * 100.0; | |
701 | ||
15e6392f | 702 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 703 | |
4aa9015f SE |
704 | fprintf(output, " # "); |
705 | color_fprintf(output, color, "%6.2f%%", ratio); | |
706 | fprintf(output, " of all dTLB cache hits "); | |
c3305257 IM |
707 | } |
708 | ||
1d037ca1 IT |
709 | static void print_itlb_cache_misses(int cpu, |
710 | struct perf_evsel *evsel __maybe_unused, | |
711 | double avg) | |
c3305257 IM |
712 | { |
713 | double total, ratio = 0.0; | |
714 | const char *color; | |
715 | ||
716 | total = avg_stats(&runtime_itlb_cache_stats[cpu]); | |
717 | ||
718 | if (total) | |
719 | ratio = avg / total * 100.0; | |
720 | ||
15e6392f | 721 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 722 | |
4aa9015f SE |
723 | fprintf(output, " # "); |
724 | color_fprintf(output, color, "%6.2f%%", ratio); | |
725 | fprintf(output, " of all iTLB cache hits "); | |
c3305257 IM |
726 | } |
727 | ||
1d037ca1 IT |
728 | static void print_ll_cache_misses(int cpu, |
729 | struct perf_evsel *evsel __maybe_unused, | |
730 | double avg) | |
c3305257 IM |
731 | { |
732 | double total, ratio = 0.0; | |
733 | const char *color; | |
734 | ||
735 | total = avg_stats(&runtime_ll_cache_stats[cpu]); | |
736 | ||
737 | if (total) | |
738 | ratio = avg / total * 100.0; | |
739 | ||
15e6392f | 740 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 741 | |
4aa9015f SE |
742 | fprintf(output, " # "); |
743 | color_fprintf(output, color, "%6.2f%%", ratio); | |
744 | fprintf(output, " of all LL-cache hits "); | |
c3305257 IM |
745 | } |
746 | ||
daec78a0 | 747 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 748 | { |
c7f7fea3 | 749 | double total, ratio = 0.0; |
f5b4a9c3 | 750 | char cpustr[16] = { '\0', }; |
d7470b6a SE |
751 | const char *fmt; |
752 | ||
753 | if (csv_output) | |
754 | fmt = "%s%.0f%s%s"; | |
755 | else if (big_num) | |
2cba3ffb | 756 | fmt = "%s%'18.0f%s%-25s"; |
d7470b6a | 757 | else |
2cba3ffb | 758 | fmt = "%s%18.0f%s%-25s"; |
f5b4a9c3 SE |
759 | |
760 | if (no_aggr) | |
d7470b6a SE |
761 | sprintf(cpustr, "CPU%*d%s", |
762 | csv_output ? 0 : -4, | |
7ae92e74 | 763 | perf_evsel__cpus(evsel)->map[cpu], csv_sep); |
f5b4a9c3 SE |
764 | else |
765 | cpu = 0; | |
c7f7fea3 | 766 | |
7289f83c | 767 | fprintf(output, fmt, cpustr, avg, csv_sep, perf_evsel__name(evsel)); |
d7470b6a | 768 | |
023695d9 | 769 | if (evsel->cgrp) |
4aa9015f | 770 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 771 | |
d7470b6a SE |
772 | if (csv_output) |
773 | return; | |
44175b6f | 774 | |
daec78a0 | 775 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
f5b4a9c3 | 776 | total = avg_stats(&runtime_cycles_stats[cpu]); |
c7f7fea3 IM |
777 | |
778 | if (total) | |
779 | ratio = avg / total; | |
780 | ||
4aa9015f | 781 | fprintf(output, " # %5.2f insns per cycle ", ratio); |
481f988a | 782 | |
d3d1e86d IM |
783 | total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]); |
784 | total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu])); | |
481f988a IM |
785 | |
786 | if (total && avg) { | |
787 | ratio = total / avg; | |
4aa9015f | 788 | fprintf(output, "\n # %5.2f stalled cycles per insn", ratio); |
481f988a IM |
789 | } |
790 | ||
daec78a0 | 791 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
f5b4a9c3 | 792 | runtime_branches_stats[cpu].n != 0) { |
c78df6c1 | 793 | print_branch_misses(cpu, evsel, avg); |
8bb6c79f IM |
794 | } else if ( |
795 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
796 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | | |
797 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
798 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
c6264def | 799 | runtime_l1_dcache_stats[cpu].n != 0) { |
8bb6c79f | 800 | print_l1_dcache_misses(cpu, evsel, avg); |
c3305257 IM |
801 | } else if ( |
802 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
803 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | | |
804 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
805 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
806 | runtime_l1_icache_stats[cpu].n != 0) { | |
807 | print_l1_icache_misses(cpu, evsel, avg); | |
808 | } else if ( | |
809 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
810 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | | |
811 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
812 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
813 | runtime_dtlb_cache_stats[cpu].n != 0) { | |
814 | print_dtlb_cache_misses(cpu, evsel, avg); | |
815 | } else if ( | |
816 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
817 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | | |
818 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
819 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
820 | runtime_itlb_cache_stats[cpu].n != 0) { | |
821 | print_itlb_cache_misses(cpu, evsel, avg); | |
822 | } else if ( | |
823 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
824 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | | |
825 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
826 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
827 | runtime_ll_cache_stats[cpu].n != 0) { | |
828 | print_ll_cache_misses(cpu, evsel, avg); | |
d58f4c82 IM |
829 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
830 | runtime_cacherefs_stats[cpu].n != 0) { | |
831 | total = avg_stats(&runtime_cacherefs_stats[cpu]); | |
832 | ||
833 | if (total) | |
834 | ratio = avg * 100 / total; | |
835 | ||
4aa9015f | 836 | fprintf(output, " # %8.3f %% of all cache refs ", ratio); |
d58f4c82 | 837 | |
d3d1e86d IM |
838 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
839 | print_stalled_cycles_frontend(cpu, evsel, avg); | |
129c04cb | 840 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
d3d1e86d | 841 | print_stalled_cycles_backend(cpu, evsel, avg); |
481f988a | 842 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
f5b4a9c3 | 843 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
c7f7fea3 IM |
844 | |
845 | if (total) | |
481f988a | 846 | ratio = 1.0 * avg / total; |
c7f7fea3 | 847 | |
4aa9015f | 848 | fprintf(output, " # %8.3f GHz ", ratio); |
481f988a | 849 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
5fde2523 NK |
850 | char unit = 'M'; |
851 | ||
481f988a | 852 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
11ba2b85 IM |
853 | |
854 | if (total) | |
481f988a | 855 | ratio = 1000.0 * avg / total; |
5fde2523 NK |
856 | if (ratio < 0.001) { |
857 | ratio *= 1000; | |
858 | unit = 'K'; | |
859 | } | |
11ba2b85 | 860 | |
5fde2523 | 861 | fprintf(output, " # %8.3f %c/sec ", ratio, unit); |
a5d243d0 | 862 | } else { |
4aa9015f | 863 | fprintf(output, " "); |
44175b6f | 864 | } |
44175b6f IM |
865 | } |
866 | ||
2996f5dd IM |
867 | /* |
868 | * Print out the results of a single counter: | |
f5b4a9c3 | 869 | * aggregated counts in system-wide mode |
2996f5dd | 870 | */ |
69aad6f1 | 871 | static void print_counter_aggr(struct perf_evsel *counter) |
2996f5dd | 872 | { |
69aad6f1 ACM |
873 | struct perf_stat *ps = counter->priv; |
874 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 875 | int scaled = counter->counts->scaled; |
2996f5dd | 876 | |
2996f5dd | 877 | if (scaled == -1) { |
4aa9015f | 878 | fprintf(output, "%*s%s%*s", |
d7470b6a | 879 | csv_output ? 0 : 18, |
2cee77c4 | 880 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
023695d9 SE |
881 | csv_sep, |
882 | csv_output ? 0 : -24, | |
7289f83c | 883 | perf_evsel__name(counter)); |
023695d9 SE |
884 | |
885 | if (counter->cgrp) | |
4aa9015f | 886 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 887 | |
4aa9015f | 888 | fputc('\n', output); |
2996f5dd IM |
889 | return; |
890 | } | |
c04f5e5d | 891 | |
44175b6f | 892 | if (nsec_counter(counter)) |
f5b4a9c3 | 893 | nsec_printout(-1, counter, avg); |
44175b6f | 894 | else |
f5b4a9c3 | 895 | abs_printout(-1, counter, avg); |
849abde9 | 896 | |
3ae9a34d ZH |
897 | print_noise(counter, avg); |
898 | ||
d7470b6a | 899 | if (csv_output) { |
4aa9015f | 900 | fputc('\n', output); |
d7470b6a SE |
901 | return; |
902 | } | |
903 | ||
506d4bc8 PZ |
904 | if (scaled) { |
905 | double avg_enabled, avg_running; | |
906 | ||
69aad6f1 ACM |
907 | avg_enabled = avg_stats(&ps->res_stats[1]); |
908 | avg_running = avg_stats(&ps->res_stats[2]); | |
d7c29318 | 909 | |
4aa9015f | 910 | fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled); |
506d4bc8 | 911 | } |
4aa9015f | 912 | fprintf(output, "\n"); |
c04f5e5d IM |
913 | } |
914 | ||
f5b4a9c3 SE |
915 | /* |
916 | * Print out the results of a single counter: | |
917 | * does not use aggregated count in system-wide | |
918 | */ | |
69aad6f1 | 919 | static void print_counter(struct perf_evsel *counter) |
f5b4a9c3 SE |
920 | { |
921 | u64 ena, run, val; | |
922 | int cpu; | |
923 | ||
7ae92e74 | 924 | for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) { |
c52b12ed ACM |
925 | val = counter->counts->cpu[cpu].val; |
926 | ena = counter->counts->cpu[cpu].ena; | |
927 | run = counter->counts->cpu[cpu].run; | |
f5b4a9c3 | 928 | if (run == 0 || ena == 0) { |
4aa9015f | 929 | fprintf(output, "CPU%*d%s%*s%s%*s", |
d7470b6a | 930 | csv_output ? 0 : -4, |
7ae92e74 | 931 | perf_evsel__cpus(counter)->map[cpu], csv_sep, |
d7470b6a | 932 | csv_output ? 0 : 18, |
2cee77c4 DA |
933 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
934 | csv_sep, | |
023695d9 | 935 | csv_output ? 0 : -24, |
7289f83c | 936 | perf_evsel__name(counter)); |
f5b4a9c3 | 937 | |
023695d9 | 938 | if (counter->cgrp) |
4aa9015f SE |
939 | fprintf(output, "%s%s", |
940 | csv_sep, counter->cgrp->name); | |
023695d9 | 941 | |
4aa9015f | 942 | fputc('\n', output); |
f5b4a9c3 SE |
943 | continue; |
944 | } | |
945 | ||
946 | if (nsec_counter(counter)) | |
947 | nsec_printout(cpu, counter, val); | |
948 | else | |
949 | abs_printout(cpu, counter, val); | |
950 | ||
d7470b6a SE |
951 | if (!csv_output) { |
952 | print_noise(counter, 1.0); | |
f5b4a9c3 | 953 | |
c6264def | 954 | if (run != ena) |
4aa9015f SE |
955 | fprintf(output, " (%.2f%%)", |
956 | 100.0 * run / ena); | |
f5b4a9c3 | 957 | } |
4aa9015f | 958 | fputc('\n', output); |
f5b4a9c3 SE |
959 | } |
960 | } | |
961 | ||
42202dd5 IM |
962 | static void print_stat(int argc, const char **argv) |
963 | { | |
69aad6f1 ACM |
964 | struct perf_evsel *counter; |
965 | int i; | |
42202dd5 | 966 | |
ddcacfa0 IM |
967 | fflush(stdout); |
968 | ||
d7470b6a | 969 | if (!csv_output) { |
4aa9015f SE |
970 | fprintf(output, "\n"); |
971 | fprintf(output, " Performance counter stats for "); | |
aa22dd49 | 972 | if (!perf_target__has_task(&target)) { |
4aa9015f | 973 | fprintf(output, "\'%s", argv[0]); |
d7470b6a | 974 | for (i = 1; i < argc; i++) |
4aa9015f | 975 | fprintf(output, " %s", argv[i]); |
20f946b4 NK |
976 | } else if (target.pid) |
977 | fprintf(output, "process id \'%s", target.pid); | |
d7470b6a | 978 | else |
20f946b4 | 979 | fprintf(output, "thread id \'%s", target.tid); |
44db76c8 | 980 | |
4aa9015f | 981 | fprintf(output, "\'"); |
d7470b6a | 982 | if (run_count > 1) |
4aa9015f SE |
983 | fprintf(output, " (%d runs)", run_count); |
984 | fprintf(output, ":\n\n"); | |
d7470b6a | 985 | } |
2996f5dd | 986 | |
f5b4a9c3 | 987 | if (no_aggr) { |
361c99a6 | 988 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
989 | print_counter(counter); |
990 | } else { | |
361c99a6 | 991 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
992 | print_counter_aggr(counter); |
993 | } | |
ddcacfa0 | 994 | |
d7470b6a | 995 | if (!csv_output) { |
c3305257 | 996 | if (!null_run) |
4aa9015f SE |
997 | fprintf(output, "\n"); |
998 | fprintf(output, " %17.9f seconds time elapsed", | |
d7470b6a SE |
999 | avg_stats(&walltime_nsecs_stats)/1e9); |
1000 | if (run_count > 1) { | |
4aa9015f | 1001 | fprintf(output, " "); |
f99844cb IM |
1002 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
1003 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a | 1004 | } |
4aa9015f | 1005 | fprintf(output, "\n\n"); |
566747e6 | 1006 | } |
ddcacfa0 IM |
1007 | } |
1008 | ||
f7b7c26e PZ |
1009 | static volatile int signr = -1; |
1010 | ||
5242519b | 1011 | static void skip_signal(int signo) |
ddcacfa0 | 1012 | { |
6be2850e | 1013 | if(child_pid == -1) |
60666c63 LW |
1014 | done = 1; |
1015 | ||
f7b7c26e PZ |
1016 | signr = signo; |
1017 | } | |
1018 | ||
1019 | static void sig_atexit(void) | |
1020 | { | |
933da83a CW |
1021 | if (child_pid != -1) |
1022 | kill(child_pid, SIGTERM); | |
1023 | ||
f7b7c26e PZ |
1024 | if (signr == -1) |
1025 | return; | |
1026 | ||
1027 | signal(signr, SIG_DFL); | |
1028 | kill(getpid(), signr); | |
5242519b IM |
1029 | } |
1030 | ||
1031 | static const char * const stat_usage[] = { | |
60666c63 | 1032 | "perf stat [<options>] [<command>]", |
5242519b IM |
1033 | NULL |
1034 | }; | |
1035 | ||
1d037ca1 IT |
1036 | static int stat__set_big_num(const struct option *opt __maybe_unused, |
1037 | const char *s __maybe_unused, int unset) | |
d7470b6a SE |
1038 | { |
1039 | big_num_opt = unset ? 0 : 1; | |
1040 | return 0; | |
1041 | } | |
1042 | ||
4aa9015f SE |
1043 | static bool append_file; |
1044 | ||
5242519b | 1045 | static const struct option options[] = { |
361c99a6 | 1046 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 | 1047 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1048 | parse_events_option), |
cfd748ae FW |
1049 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
1050 | "event filter", parse_filter), | |
2e6cdf99 SE |
1051 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
1052 | "child tasks do not inherit counters"), | |
20f946b4 | 1053 | OPT_STRING('p', "pid", &target.pid, "pid", |
b52956c9 | 1054 | "stat events on existing process id"), |
20f946b4 | 1055 | OPT_STRING('t', "tid", &target.tid, "tid", |
b52956c9 | 1056 | "stat events on existing thread id"), |
20f946b4 | 1057 | OPT_BOOLEAN('a', "all-cpus", &target.system_wide, |
3d632595 | 1058 | "system-wide collection from all CPUs"), |
43bece79 LM |
1059 | OPT_BOOLEAN('g', "group", &group, |
1060 | "put the counters into a counter group"), | |
b26bc5a7 | 1061 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 1062 | "scale/normalize counters"), |
c0555642 | 1063 | OPT_INCR('v', "verbose", &verbose, |
743ee1f8 | 1064 | "be more verbose (show counter open errors, etc)"), |
42202dd5 IM |
1065 | OPT_INTEGER('r', "repeat", &run_count, |
1066 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
1067 | OPT_BOOLEAN('n', "null", &null_run, |
1068 | "null run - dont start any counters"), | |
2cba3ffb | 1069 | OPT_INCR('d', "detailed", &detailed_run, |
c6264def | 1070 | "detailed run - start a lot of events"), |
f9cef0a9 IM |
1071 | OPT_BOOLEAN('S', "sync", &sync_run, |
1072 | "call sync() before starting a run"), | |
d7470b6a SE |
1073 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
1074 | "print large numbers with thousands\' separators", | |
1075 | stat__set_big_num), | |
20f946b4 | 1076 | OPT_STRING('C', "cpu", &target.cpu_list, "cpu", |
c45c6ea2 | 1077 | "list of cpus to monitor in system-wide"), |
f5b4a9c3 SE |
1078 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
1079 | "disable CPU count aggregation"), | |
d7470b6a SE |
1080 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1081 | "print counts with custom separator"), | |
023695d9 SE |
1082 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
1083 | "monitor event in cgroup name only", | |
1084 | parse_cgroups), | |
4aa9015f SE |
1085 | OPT_STRING('o', "output", &output_name, "file", |
1086 | "output file name"), | |
1087 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
56f3bae7 JC |
1088 | OPT_INTEGER(0, "log-fd", &output_fd, |
1089 | "log output to fd, instead of stderr"), | |
5242519b IM |
1090 | OPT_END() |
1091 | }; | |
1092 | ||
2cba3ffb IM |
1093 | /* |
1094 | * Add default attributes, if there were no attributes specified or | |
1095 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1096 | */ | |
1097 | static int add_default_attributes(void) | |
1098 | { | |
2cba3ffb IM |
1099 | /* Set attrs if no event is selected and !null_run: */ |
1100 | if (null_run) | |
1101 | return 0; | |
1102 | ||
1103 | if (!evsel_list->nr_entries) { | |
79695e1b | 1104 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0) |
50d08e47 | 1105 | return -1; |
2cba3ffb IM |
1106 | } |
1107 | ||
1108 | /* Detailed events get appended to the event list: */ | |
1109 | ||
1110 | if (detailed_run < 1) | |
1111 | return 0; | |
1112 | ||
1113 | /* Append detailed run extra attributes: */ | |
79695e1b | 1114 | if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
50d08e47 | 1115 | return -1; |
2cba3ffb IM |
1116 | |
1117 | if (detailed_run < 2) | |
1118 | return 0; | |
1119 | ||
1120 | /* Append very detailed run extra attributes: */ | |
79695e1b | 1121 | if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
50d08e47 | 1122 | return -1; |
2cba3ffb IM |
1123 | |
1124 | if (detailed_run < 3) | |
1125 | return 0; | |
1126 | ||
1127 | /* Append very, very detailed run extra attributes: */ | |
79695e1b | 1128 | return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1129 | } |
1130 | ||
1d037ca1 | 1131 | int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) |
5242519b | 1132 | { |
69aad6f1 ACM |
1133 | struct perf_evsel *pos; |
1134 | int status = -ENOMEM; | |
4aa9015f | 1135 | const char *mode; |
42202dd5 | 1136 | |
5af52b51 SE |
1137 | setlocale(LC_ALL, ""); |
1138 | ||
7e2ed097 | 1139 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1140 | if (evsel_list == NULL) |
1141 | return -ENOMEM; | |
1142 | ||
a0541234 AB |
1143 | argc = parse_options(argc, argv, options, stat_usage, |
1144 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a | 1145 | |
4aa9015f SE |
1146 | output = stderr; |
1147 | if (output_name && strcmp(output_name, "-")) | |
1148 | output = NULL; | |
1149 | ||
56f3bae7 JC |
1150 | if (output_name && output_fd) { |
1151 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
1152 | usage_with_options(stat_usage, options); | |
1153 | } | |
fc3e4d07 SE |
1154 | |
1155 | if (output_fd < 0) { | |
1156 | fprintf(stderr, "argument to --log-fd must be a > 0\n"); | |
1157 | usage_with_options(stat_usage, options); | |
1158 | } | |
1159 | ||
4aa9015f SE |
1160 | if (!output) { |
1161 | struct timespec tm; | |
1162 | mode = append_file ? "a" : "w"; | |
1163 | ||
1164 | output = fopen(output_name, mode); | |
1165 | if (!output) { | |
1166 | perror("failed to create output file"); | |
fceda7fe | 1167 | return -1; |
4aa9015f SE |
1168 | } |
1169 | clock_gettime(CLOCK_REALTIME, &tm); | |
1170 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
fc3e4d07 | 1171 | } else if (output_fd > 0) { |
56f3bae7 JC |
1172 | mode = append_file ? "a" : "w"; |
1173 | output = fdopen(output_fd, mode); | |
1174 | if (!output) { | |
1175 | perror("Failed opening logfd"); | |
1176 | return -errno; | |
1177 | } | |
4aa9015f SE |
1178 | } |
1179 | ||
d4ffd04d | 1180 | if (csv_sep) { |
d7470b6a | 1181 | csv_output = true; |
d4ffd04d JC |
1182 | if (!strcmp(csv_sep, "\\t")) |
1183 | csv_sep = "\t"; | |
1184 | } else | |
d7470b6a SE |
1185 | csv_sep = DEFAULT_SEPARATOR; |
1186 | ||
1187 | /* | |
1188 | * let the spreadsheet do the pretty-printing | |
1189 | */ | |
1190 | if (csv_output) { | |
61a9f324 | 1191 | /* User explicitly passed -B? */ |
d7470b6a SE |
1192 | if (big_num_opt == 1) { |
1193 | fprintf(stderr, "-B option not supported with -x\n"); | |
1194 | usage_with_options(stat_usage, options); | |
1195 | } else /* Nope, so disable big number formatting */ | |
1196 | big_num = false; | |
1197 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1198 | big_num = false; | |
1199 | ||
aa22dd49 | 1200 | if (!argc && !perf_target__has_task(&target)) |
5242519b | 1201 | usage_with_options(stat_usage, options); |
9e9772c4 | 1202 | if (run_count <= 0) |
42202dd5 | 1203 | usage_with_options(stat_usage, options); |
ddcacfa0 | 1204 | |
023695d9 | 1205 | /* no_aggr, cgroup are for system-wide only */ |
aa22dd49 | 1206 | if ((no_aggr || nr_cgroups) && !perf_target__has_cpu(&target)) { |
023695d9 SE |
1207 | fprintf(stderr, "both cgroup and no-aggregation " |
1208 | "modes only available in system-wide mode\n"); | |
1209 | ||
f5b4a9c3 | 1210 | usage_with_options(stat_usage, options); |
023695d9 | 1211 | } |
f5b4a9c3 | 1212 | |
2cba3ffb IM |
1213 | if (add_default_attributes()) |
1214 | goto out; | |
ddcacfa0 | 1215 | |
4bd0f2d2 | 1216 | perf_target__validate(&target); |
5c98d466 | 1217 | |
77a6f014 | 1218 | if (perf_evlist__create_maps(evsel_list, &target) < 0) { |
aa22dd49 | 1219 | if (perf_target__has_task(&target)) |
77a6f014 | 1220 | pr_err("Problems finding threads of monitor\n"); |
aa22dd49 | 1221 | if (perf_target__has_cpu(&target)) |
77a6f014 | 1222 | perror("failed to parse CPUs map"); |
ddcacfa0 | 1223 | |
c45c6ea2 | 1224 | usage_with_options(stat_usage, options); |
60d567e2 ACM |
1225 | return -1; |
1226 | } | |
c45c6ea2 | 1227 | |
361c99a6 | 1228 | list_for_each_entry(pos, &evsel_list->entries, node) { |
c52b12ed | 1229 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
7ae92e74 | 1230 | perf_evsel__alloc_counts(pos, perf_evsel__nr_cpus(pos)) < 0) |
69aad6f1 | 1231 | goto out_free_fd; |
d6d901c2 ZY |
1232 | } |
1233 | ||
58d7e993 IM |
1234 | /* |
1235 | * We dont want to block the signals - that would cause | |
1236 | * child tasks to inherit that and Ctrl-C would not work. | |
1237 | * What we want is for Ctrl-C to work in the exec()-ed | |
1238 | * task, but being ignored by perf stat itself: | |
1239 | */ | |
f7b7c26e | 1240 | atexit(sig_atexit); |
58d7e993 IM |
1241 | signal(SIGINT, skip_signal); |
1242 | signal(SIGALRM, skip_signal); | |
1243 | signal(SIGABRT, skip_signal); | |
1244 | ||
42202dd5 IM |
1245 | status = 0; |
1246 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
1247 | if (run_count != 1 && verbose) | |
4aa9015f SE |
1248 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1249 | run_idx + 1); | |
f9cef0a9 IM |
1250 | |
1251 | if (sync_run) | |
1252 | sync(); | |
1253 | ||
42202dd5 IM |
1254 | status = run_perf_stat(argc, argv); |
1255 | } | |
1256 | ||
084ab9f8 ACM |
1257 | if (status != -1) |
1258 | print_stat(argc, argv); | |
69aad6f1 | 1259 | out_free_fd: |
361c99a6 | 1260 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1261 | perf_evsel__free_stat_priv(pos); |
7e2ed097 | 1262 | perf_evlist__delete_maps(evsel_list); |
0015e2e1 ACM |
1263 | out: |
1264 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1265 | return status; |
ddcacfa0 | 1266 | } |