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 | ||
666e6d48 RR |
218 | static struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
219 | static struct stats runtime_cycles_stats[MAX_NR_CPUS]; | |
220 | static struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS]; | |
221 | static struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS]; | |
222 | static struct stats runtime_branches_stats[MAX_NR_CPUS]; | |
223 | static struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; | |
224 | static struct stats runtime_l1_dcache_stats[MAX_NR_CPUS]; | |
225 | static struct stats runtime_l1_icache_stats[MAX_NR_CPUS]; | |
226 | static struct stats runtime_ll_cache_stats[MAX_NR_CPUS]; | |
227 | static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS]; | |
228 | static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS]; | |
229 | static struct stats walltime_nsecs_stats; | |
be1ac0d8 | 230 | |
727ab04e ACM |
231 | static int create_perf_stat_counter(struct perf_evsel *evsel, |
232 | struct perf_evsel *first) | |
ddcacfa0 | 233 | { |
69aad6f1 | 234 | struct perf_event_attr *attr = &evsel->attr; |
5622c07b SE |
235 | bool exclude_guest_missing = false; |
236 | int ret; | |
727ab04e | 237 | |
ddcacfa0 | 238 | if (scale) |
a21ca2ca IM |
239 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
240 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
ddcacfa0 | 241 | |
5d2cd909 ACM |
242 | attr->inherit = !no_inherit; |
243 | ||
5622c07b SE |
244 | retry: |
245 | if (exclude_guest_missing) | |
246 | evsel->attr.exclude_guest = evsel->attr.exclude_host = 0; | |
247 | ||
16ee6576 | 248 | if (perf_target__has_cpu(&target)) { |
6a4bb04c | 249 | ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus); |
5622c07b SE |
250 | if (ret) |
251 | goto check_ret; | |
252 | return 0; | |
253 | } | |
254 | ||
aa22dd49 | 255 | if (!perf_target__has_task(&target) && (!group || evsel == first)) { |
48290609 ACM |
256 | attr->disabled = 1; |
257 | attr->enable_on_exec = 1; | |
ddcacfa0 | 258 | } |
084ab9f8 | 259 | |
6a4bb04c | 260 | ret = perf_evsel__open_per_thread(evsel, evsel_list->threads); |
5622c07b SE |
261 | if (!ret) |
262 | return 0; | |
263 | /* fall through */ | |
264 | check_ret: | |
265 | if (ret && errno == EINVAL) { | |
266 | if (!exclude_guest_missing && | |
267 | (evsel->attr.exclude_guest || evsel->attr.exclude_host)) { | |
268 | pr_debug("Old kernel, cannot exclude " | |
269 | "guest or host samples.\n"); | |
270 | exclude_guest_missing = true; | |
271 | goto retry; | |
272 | } | |
273 | } | |
274 | return ret; | |
ddcacfa0 IM |
275 | } |
276 | ||
c04f5e5d IM |
277 | /* |
278 | * Does the counter have nsecs as a unit? | |
279 | */ | |
daec78a0 | 280 | static inline int nsec_counter(struct perf_evsel *evsel) |
c04f5e5d | 281 | { |
daec78a0 ACM |
282 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
283 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) | |
c04f5e5d IM |
284 | return 1; |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
dcd9936a IM |
289 | /* |
290 | * Update various tracking values we maintain to print | |
291 | * more semantic information such as miss/hit ratios, | |
292 | * instruction rates, etc: | |
293 | */ | |
294 | static void update_shadow_stats(struct perf_evsel *counter, u64 *count) | |
295 | { | |
296 | if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) | |
297 | update_stats(&runtime_nsecs_stats[0], count[0]); | |
298 | else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) | |
299 | update_stats(&runtime_cycles_stats[0], count[0]); | |
d3d1e86d IM |
300 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
301 | update_stats(&runtime_stalled_cycles_front_stats[0], count[0]); | |
129c04cb | 302 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
d3d1e86d | 303 | update_stats(&runtime_stalled_cycles_back_stats[0], count[0]); |
dcd9936a IM |
304 | else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
305 | update_stats(&runtime_branches_stats[0], count[0]); | |
306 | else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) | |
307 | update_stats(&runtime_cacherefs_stats[0], count[0]); | |
8bb6c79f IM |
308 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
309 | update_stats(&runtime_l1_dcache_stats[0], count[0]); | |
c3305257 IM |
310 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) |
311 | update_stats(&runtime_l1_icache_stats[0], count[0]); | |
312 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL)) | |
313 | update_stats(&runtime_ll_cache_stats[0], count[0]); | |
314 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) | |
315 | update_stats(&runtime_dtlb_cache_stats[0], count[0]); | |
316 | else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) | |
317 | update_stats(&runtime_itlb_cache_stats[0], count[0]); | |
dcd9936a IM |
318 | } |
319 | ||
c04f5e5d | 320 | /* |
2996f5dd | 321 | * Read out the results of a single counter: |
f5b4a9c3 | 322 | * aggregate counts across CPUs in system-wide mode |
c04f5e5d | 323 | */ |
c52b12ed | 324 | static int read_counter_aggr(struct perf_evsel *counter) |
c04f5e5d | 325 | { |
69aad6f1 | 326 | struct perf_stat *ps = counter->priv; |
c52b12ed ACM |
327 | u64 *count = counter->counts->aggr.values; |
328 | int i; | |
2996f5dd | 329 | |
7e2ed097 ACM |
330 | if (__perf_evsel__read(counter, evsel_list->cpus->nr, |
331 | evsel_list->threads->nr, scale) < 0) | |
c52b12ed | 332 | return -1; |
9e9772c4 PZ |
333 | |
334 | for (i = 0; i < 3; i++) | |
69aad6f1 | 335 | update_stats(&ps->res_stats[i], count[i]); |
9e9772c4 PZ |
336 | |
337 | if (verbose) { | |
4aa9015f | 338 | fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
7289f83c | 339 | perf_evsel__name(counter), count[0], count[1], count[2]); |
9e9772c4 PZ |
340 | } |
341 | ||
be1ac0d8 IM |
342 | /* |
343 | * Save the full runtime - to allow normalization during printout: | |
344 | */ | |
dcd9936a | 345 | update_shadow_stats(counter, count); |
c52b12ed ACM |
346 | |
347 | return 0; | |
f5b4a9c3 SE |
348 | } |
349 | ||
350 | /* | |
351 | * Read out the results of a single counter: | |
352 | * do not aggregate counts across CPUs in system-wide mode | |
353 | */ | |
c52b12ed | 354 | static int read_counter(struct perf_evsel *counter) |
f5b4a9c3 | 355 | { |
c52b12ed | 356 | u64 *count; |
f5b4a9c3 | 357 | int cpu; |
f5b4a9c3 | 358 | |
7e2ed097 | 359 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
360 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
361 | return -1; | |
f5b4a9c3 | 362 | |
c52b12ed | 363 | count = counter->counts->cpu[cpu].values; |
f5b4a9c3 | 364 | |
dcd9936a | 365 | update_shadow_stats(counter, count); |
f5b4a9c3 | 366 | } |
c52b12ed ACM |
367 | |
368 | return 0; | |
2996f5dd IM |
369 | } |
370 | ||
1d037ca1 | 371 | static int run_perf_stat(int argc __maybe_unused, const char **argv) |
42202dd5 IM |
372 | { |
373 | unsigned long long t0, t1; | |
727ab04e | 374 | struct perf_evsel *counter, *first; |
42202dd5 | 375 | int status = 0; |
051ae7f7 | 376 | int child_ready_pipe[2], go_pipe[2]; |
6be2850e | 377 | const bool forks = (argc > 0); |
051ae7f7 | 378 | char buf; |
42202dd5 | 379 | |
60666c63 | 380 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
051ae7f7 | 381 | perror("failed to create pipes"); |
fceda7fe | 382 | return -1; |
051ae7f7 PM |
383 | } |
384 | ||
60666c63 | 385 | if (forks) { |
6be2850e | 386 | if ((child_pid = fork()) < 0) |
60666c63 LW |
387 | perror("failed to fork"); |
388 | ||
6be2850e | 389 | if (!child_pid) { |
60666c63 LW |
390 | close(child_ready_pipe[0]); |
391 | close(go_pipe[1]); | |
392 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); | |
393 | ||
394 | /* | |
395 | * Do a dummy execvp to get the PLT entry resolved, | |
396 | * so we avoid the resolver overhead on the real | |
397 | * execvp call. | |
398 | */ | |
399 | execvp("", (char **)argv); | |
400 | ||
401 | /* | |
402 | * Tell the parent we're ready to go | |
403 | */ | |
404 | close(child_ready_pipe[1]); | |
405 | ||
406 | /* | |
407 | * Wait until the parent tells us to go. | |
408 | */ | |
409 | if (read(go_pipe[0], &buf, 1) == -1) | |
410 | perror("unable to read pipe"); | |
411 | ||
412 | execvp(argv[0], (char **)argv); | |
413 | ||
414 | perror(argv[0]); | |
415 | exit(-1); | |
416 | } | |
051ae7f7 | 417 | |
d67356e7 | 418 | if (perf_target__none(&target)) |
7e2ed097 | 419 | evsel_list->threads->map[0] = child_pid; |
d6d901c2 | 420 | |
051ae7f7 | 421 | /* |
60666c63 | 422 | * Wait for the child to be ready to exec. |
051ae7f7 PM |
423 | */ |
424 | close(child_ready_pipe[1]); | |
60666c63 LW |
425 | close(go_pipe[0]); |
426 | if (read(child_ready_pipe[0], &buf, 1) == -1) | |
a92bef0f | 427 | perror("unable to read pipe"); |
60666c63 | 428 | close(child_ready_pipe[0]); |
051ae7f7 PM |
429 | } |
430 | ||
6a4bb04c | 431 | if (group) |
63dab225 | 432 | perf_evlist__set_leader(evsel_list); |
6a4bb04c | 433 | |
0c21f736 | 434 | first = perf_evlist__first(evsel_list); |
727ab04e | 435 | |
361c99a6 | 436 | list_for_each_entry(counter, &evsel_list->entries, node) { |
727ab04e | 437 | if (create_perf_stat_counter(counter, first) < 0) { |
979987a5 DA |
438 | /* |
439 | * PPC returns ENXIO for HW counters until 2.6.37 | |
440 | * (behavior changed with commit b0a873e). | |
441 | */ | |
38f6ae1e | 442 | if (errno == EINVAL || errno == ENOSYS || |
979987a5 DA |
443 | errno == ENOENT || errno == EOPNOTSUPP || |
444 | errno == ENXIO) { | |
c63ca0c0 DA |
445 | if (verbose) |
446 | ui__warning("%s event is not supported by the kernel.\n", | |
7289f83c | 447 | perf_evsel__name(counter)); |
2cee77c4 | 448 | counter->supported = false; |
ede70290 | 449 | continue; |
c63ca0c0 | 450 | } |
ede70290 IM |
451 | |
452 | if (errno == EPERM || errno == EACCES) { | |
48290609 ACM |
453 | error("You may not have permission to collect %sstats.\n" |
454 | "\t Consider tweaking" | |
455 | " /proc/sys/kernel/perf_event_paranoid or running as root.", | |
20f946b4 | 456 | target.system_wide ? "system-wide " : ""); |
48290609 ACM |
457 | } else { |
458 | error("open_counter returned with %d (%s). " | |
459 | "/bin/dmesg may provide additional information.\n", | |
460 | errno, strerror(errno)); | |
461 | } | |
462 | if (child_pid != -1) | |
463 | kill(child_pid, SIGTERM); | |
fceda7fe DA |
464 | |
465 | pr_err("Not all events could be opened.\n"); | |
48290609 ACM |
466 | return -1; |
467 | } | |
2cee77c4 | 468 | counter->supported = true; |
084ab9f8 | 469 | } |
42202dd5 | 470 | |
cfd748ae FW |
471 | if (perf_evlist__set_filters(evsel_list)) { |
472 | error("failed to set filter with %d (%s)\n", errno, | |
473 | strerror(errno)); | |
474 | return -1; | |
475 | } | |
476 | ||
42202dd5 IM |
477 | /* |
478 | * Enable counters and exec the command: | |
479 | */ | |
480 | t0 = rdclock(); | |
42202dd5 | 481 | |
60666c63 LW |
482 | if (forks) { |
483 | close(go_pipe[1]); | |
484 | wait(&status); | |
33e49ea7 AK |
485 | if (WIFSIGNALED(status)) |
486 | psignal(WTERMSIG(status), argv[0]); | |
60666c63 | 487 | } else { |
6be2850e | 488 | while(!done) sleep(1); |
60666c63 | 489 | } |
42202dd5 | 490 | |
42202dd5 IM |
491 | t1 = rdclock(); |
492 | ||
9e9772c4 | 493 | update_stats(&walltime_nsecs_stats, t1 - t0); |
42202dd5 | 494 | |
f5b4a9c3 | 495 | if (no_aggr) { |
361c99a6 | 496 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 497 | read_counter(counter); |
7e2ed097 | 498 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1); |
c52b12ed | 499 | } |
f5b4a9c3 | 500 | } else { |
361c99a6 | 501 | list_for_each_entry(counter, &evsel_list->entries, node) { |
f5b4a9c3 | 502 | read_counter_aggr(counter); |
7e2ed097 ACM |
503 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, |
504 | evsel_list->threads->nr); | |
c52b12ed | 505 | } |
f5b4a9c3 | 506 | } |
c52b12ed | 507 | |
42202dd5 IM |
508 | return WEXITSTATUS(status); |
509 | } | |
510 | ||
f99844cb IM |
511 | static void print_noise_pct(double total, double avg) |
512 | { | |
0007ecea | 513 | double pct = rel_stddev_stats(total, avg); |
f99844cb | 514 | |
3ae9a34d | 515 | if (csv_output) |
4aa9015f | 516 | fprintf(output, "%s%.2f%%", csv_sep, pct); |
a1bca6cc | 517 | else if (pct) |
4aa9015f | 518 | fprintf(output, " ( +-%6.2f%% )", pct); |
f99844cb IM |
519 | } |
520 | ||
69aad6f1 | 521 | static void print_noise(struct perf_evsel *evsel, double avg) |
42202dd5 | 522 | { |
69aad6f1 ACM |
523 | struct perf_stat *ps; |
524 | ||
849abde9 PZ |
525 | if (run_count == 1) |
526 | return; | |
527 | ||
69aad6f1 | 528 | ps = evsel->priv; |
f99844cb | 529 | print_noise_pct(stddev_stats(&ps->res_stats[0]), avg); |
42202dd5 IM |
530 | } |
531 | ||
daec78a0 | 532 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 533 | { |
506d4bc8 | 534 | double msecs = avg / 1e6; |
d7470b6a | 535 | char cpustr[16] = { '\0', }; |
2cba3ffb | 536 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s"; |
44175b6f | 537 | |
f5b4a9c3 | 538 | if (no_aggr) |
d7470b6a SE |
539 | sprintf(cpustr, "CPU%*d%s", |
540 | csv_output ? 0 : -4, | |
7e2ed097 | 541 | evsel_list->cpus->map[cpu], csv_sep); |
d7470b6a | 542 | |
7289f83c | 543 | fprintf(output, fmt, cpustr, msecs, csv_sep, perf_evsel__name(evsel)); |
d7470b6a | 544 | |
023695d9 | 545 | if (evsel->cgrp) |
4aa9015f | 546 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 547 | |
d7470b6a SE |
548 | if (csv_output) |
549 | return; | |
44175b6f | 550 | |
daec78a0 | 551 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
4aa9015f SE |
552 | fprintf(output, " # %8.3f CPUs utilized ", |
553 | avg / avg_stats(&walltime_nsecs_stats)); | |
9dac6a29 NK |
554 | else |
555 | fprintf(output, " "); | |
44175b6f IM |
556 | } |
557 | ||
15e6392f NK |
558 | /* used for get_ratio_color() */ |
559 | enum grc_type { | |
560 | GRC_STALLED_CYCLES_FE, | |
561 | GRC_STALLED_CYCLES_BE, | |
562 | GRC_CACHE_MISSES, | |
563 | GRC_MAX_NR | |
564 | }; | |
565 | ||
566 | static const char *get_ratio_color(enum grc_type type, double ratio) | |
567 | { | |
568 | static const double grc_table[GRC_MAX_NR][3] = { | |
569 | [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, | |
570 | [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, | |
571 | [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, | |
572 | }; | |
573 | const char *color = PERF_COLOR_NORMAL; | |
574 | ||
575 | if (ratio > grc_table[type][0]) | |
576 | color = PERF_COLOR_RED; | |
577 | else if (ratio > grc_table[type][1]) | |
578 | color = PERF_COLOR_MAGENTA; | |
579 | else if (ratio > grc_table[type][2]) | |
580 | color = PERF_COLOR_YELLOW; | |
581 | ||
582 | return color; | |
583 | } | |
584 | ||
1d037ca1 IT |
585 | static void print_stalled_cycles_frontend(int cpu, |
586 | struct perf_evsel *evsel | |
587 | __maybe_unused, double avg) | |
d3d1e86d IM |
588 | { |
589 | double total, ratio = 0.0; | |
590 | const char *color; | |
591 | ||
592 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
593 | ||
594 | if (total) | |
595 | ratio = avg / total * 100.0; | |
596 | ||
15e6392f | 597 | color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); |
d3d1e86d | 598 | |
4aa9015f SE |
599 | fprintf(output, " # "); |
600 | color_fprintf(output, color, "%6.2f%%", ratio); | |
601 | fprintf(output, " frontend cycles idle "); | |
d3d1e86d IM |
602 | } |
603 | ||
1d037ca1 IT |
604 | static void print_stalled_cycles_backend(int cpu, |
605 | struct perf_evsel *evsel | |
606 | __maybe_unused, double avg) | |
a5d243d0 IM |
607 | { |
608 | double total, ratio = 0.0; | |
609 | const char *color; | |
610 | ||
611 | total = avg_stats(&runtime_cycles_stats[cpu]); | |
612 | ||
613 | if (total) | |
614 | ratio = avg / total * 100.0; | |
615 | ||
15e6392f | 616 | color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); |
a5d243d0 | 617 | |
4aa9015f SE |
618 | fprintf(output, " # "); |
619 | color_fprintf(output, color, "%6.2f%%", ratio); | |
620 | fprintf(output, " backend cycles idle "); | |
a5d243d0 IM |
621 | } |
622 | ||
1d037ca1 IT |
623 | static void print_branch_misses(int cpu, |
624 | struct perf_evsel *evsel __maybe_unused, | |
625 | double avg) | |
c78df6c1 IM |
626 | { |
627 | double total, ratio = 0.0; | |
628 | const char *color; | |
629 | ||
630 | total = avg_stats(&runtime_branches_stats[cpu]); | |
631 | ||
632 | if (total) | |
633 | ratio = avg / total * 100.0; | |
634 | ||
15e6392f | 635 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c78df6c1 | 636 | |
4aa9015f SE |
637 | fprintf(output, " # "); |
638 | color_fprintf(output, color, "%6.2f%%", ratio); | |
639 | fprintf(output, " of all branches "); | |
c78df6c1 IM |
640 | } |
641 | ||
1d037ca1 IT |
642 | static void print_l1_dcache_misses(int cpu, |
643 | struct perf_evsel *evsel __maybe_unused, | |
644 | double avg) | |
8bb6c79f IM |
645 | { |
646 | double total, ratio = 0.0; | |
647 | const char *color; | |
648 | ||
649 | total = avg_stats(&runtime_l1_dcache_stats[cpu]); | |
650 | ||
651 | if (total) | |
652 | ratio = avg / total * 100.0; | |
653 | ||
15e6392f | 654 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
8bb6c79f | 655 | |
4aa9015f SE |
656 | fprintf(output, " # "); |
657 | color_fprintf(output, color, "%6.2f%%", ratio); | |
658 | fprintf(output, " of all L1-dcache hits "); | |
8bb6c79f IM |
659 | } |
660 | ||
1d037ca1 IT |
661 | static void print_l1_icache_misses(int cpu, |
662 | struct perf_evsel *evsel __maybe_unused, | |
663 | double avg) | |
c3305257 IM |
664 | { |
665 | double total, ratio = 0.0; | |
666 | const char *color; | |
667 | ||
668 | total = avg_stats(&runtime_l1_icache_stats[cpu]); | |
669 | ||
670 | if (total) | |
671 | ratio = avg / total * 100.0; | |
672 | ||
15e6392f | 673 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 674 | |
4aa9015f SE |
675 | fprintf(output, " # "); |
676 | color_fprintf(output, color, "%6.2f%%", ratio); | |
677 | fprintf(output, " of all L1-icache hits "); | |
c3305257 IM |
678 | } |
679 | ||
1d037ca1 IT |
680 | static void print_dtlb_cache_misses(int cpu, |
681 | struct perf_evsel *evsel __maybe_unused, | |
682 | double avg) | |
c3305257 IM |
683 | { |
684 | double total, ratio = 0.0; | |
685 | const char *color; | |
686 | ||
687 | total = avg_stats(&runtime_dtlb_cache_stats[cpu]); | |
688 | ||
689 | if (total) | |
690 | ratio = avg / total * 100.0; | |
691 | ||
15e6392f | 692 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 693 | |
4aa9015f SE |
694 | fprintf(output, " # "); |
695 | color_fprintf(output, color, "%6.2f%%", ratio); | |
696 | fprintf(output, " of all dTLB cache hits "); | |
c3305257 IM |
697 | } |
698 | ||
1d037ca1 IT |
699 | static void print_itlb_cache_misses(int cpu, |
700 | struct perf_evsel *evsel __maybe_unused, | |
701 | double avg) | |
c3305257 IM |
702 | { |
703 | double total, ratio = 0.0; | |
704 | const char *color; | |
705 | ||
706 | total = avg_stats(&runtime_itlb_cache_stats[cpu]); | |
707 | ||
708 | if (total) | |
709 | ratio = avg / total * 100.0; | |
710 | ||
15e6392f | 711 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 712 | |
4aa9015f SE |
713 | fprintf(output, " # "); |
714 | color_fprintf(output, color, "%6.2f%%", ratio); | |
715 | fprintf(output, " of all iTLB cache hits "); | |
c3305257 IM |
716 | } |
717 | ||
1d037ca1 IT |
718 | static void print_ll_cache_misses(int cpu, |
719 | struct perf_evsel *evsel __maybe_unused, | |
720 | double avg) | |
c3305257 IM |
721 | { |
722 | double total, ratio = 0.0; | |
723 | const char *color; | |
724 | ||
725 | total = avg_stats(&runtime_ll_cache_stats[cpu]); | |
726 | ||
727 | if (total) | |
728 | ratio = avg / total * 100.0; | |
729 | ||
15e6392f | 730 | color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
c3305257 | 731 | |
4aa9015f SE |
732 | fprintf(output, " # "); |
733 | color_fprintf(output, color, "%6.2f%%", ratio); | |
734 | fprintf(output, " of all LL-cache hits "); | |
c3305257 IM |
735 | } |
736 | ||
daec78a0 | 737 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
44175b6f | 738 | { |
c7f7fea3 | 739 | double total, ratio = 0.0; |
f5b4a9c3 | 740 | char cpustr[16] = { '\0', }; |
d7470b6a SE |
741 | const char *fmt; |
742 | ||
743 | if (csv_output) | |
744 | fmt = "%s%.0f%s%s"; | |
745 | else if (big_num) | |
2cba3ffb | 746 | fmt = "%s%'18.0f%s%-25s"; |
d7470b6a | 747 | else |
2cba3ffb | 748 | fmt = "%s%18.0f%s%-25s"; |
f5b4a9c3 SE |
749 | |
750 | if (no_aggr) | |
d7470b6a SE |
751 | sprintf(cpustr, "CPU%*d%s", |
752 | csv_output ? 0 : -4, | |
7e2ed097 | 753 | evsel_list->cpus->map[cpu], csv_sep); |
f5b4a9c3 SE |
754 | else |
755 | cpu = 0; | |
c7f7fea3 | 756 | |
7289f83c | 757 | fprintf(output, fmt, cpustr, avg, csv_sep, perf_evsel__name(evsel)); |
d7470b6a | 758 | |
023695d9 | 759 | if (evsel->cgrp) |
4aa9015f | 760 | fprintf(output, "%s%s", csv_sep, evsel->cgrp->name); |
023695d9 | 761 | |
d7470b6a SE |
762 | if (csv_output) |
763 | return; | |
44175b6f | 764 | |
daec78a0 | 765 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
f5b4a9c3 | 766 | total = avg_stats(&runtime_cycles_stats[cpu]); |
c7f7fea3 IM |
767 | |
768 | if (total) | |
769 | ratio = avg / total; | |
770 | ||
4aa9015f | 771 | fprintf(output, " # %5.2f insns per cycle ", ratio); |
481f988a | 772 | |
d3d1e86d IM |
773 | total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]); |
774 | total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu])); | |
481f988a IM |
775 | |
776 | if (total && avg) { | |
777 | ratio = total / avg; | |
4aa9015f | 778 | fprintf(output, "\n # %5.2f stalled cycles per insn", ratio); |
481f988a IM |
779 | } |
780 | ||
daec78a0 | 781 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
f5b4a9c3 | 782 | runtime_branches_stats[cpu].n != 0) { |
c78df6c1 | 783 | print_branch_misses(cpu, evsel, avg); |
8bb6c79f IM |
784 | } else if ( |
785 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
786 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | | |
787 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
788 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
c6264def | 789 | runtime_l1_dcache_stats[cpu].n != 0) { |
8bb6c79f | 790 | print_l1_dcache_misses(cpu, evsel, avg); |
c3305257 IM |
791 | } else if ( |
792 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
793 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | | |
794 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
795 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
796 | runtime_l1_icache_stats[cpu].n != 0) { | |
797 | print_l1_icache_misses(cpu, evsel, avg); | |
798 | } else if ( | |
799 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
800 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | | |
801 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
802 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
803 | runtime_dtlb_cache_stats[cpu].n != 0) { | |
804 | print_dtlb_cache_misses(cpu, evsel, avg); | |
805 | } else if ( | |
806 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
807 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | | |
808 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
809 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
810 | runtime_itlb_cache_stats[cpu].n != 0) { | |
811 | print_itlb_cache_misses(cpu, evsel, avg); | |
812 | } else if ( | |
813 | evsel->attr.type == PERF_TYPE_HW_CACHE && | |
814 | evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | | |
815 | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | | |
816 | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && | |
817 | runtime_ll_cache_stats[cpu].n != 0) { | |
818 | print_ll_cache_misses(cpu, evsel, avg); | |
d58f4c82 IM |
819 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
820 | runtime_cacherefs_stats[cpu].n != 0) { | |
821 | total = avg_stats(&runtime_cacherefs_stats[cpu]); | |
822 | ||
823 | if (total) | |
824 | ratio = avg * 100 / total; | |
825 | ||
4aa9015f | 826 | fprintf(output, " # %8.3f %% of all cache refs ", ratio); |
d58f4c82 | 827 | |
d3d1e86d IM |
828 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
829 | print_stalled_cycles_frontend(cpu, evsel, avg); | |
129c04cb | 830 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
d3d1e86d | 831 | print_stalled_cycles_backend(cpu, evsel, avg); |
481f988a | 832 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
f5b4a9c3 | 833 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
c7f7fea3 IM |
834 | |
835 | if (total) | |
481f988a | 836 | ratio = 1.0 * avg / total; |
c7f7fea3 | 837 | |
4aa9015f | 838 | fprintf(output, " # %8.3f GHz ", ratio); |
481f988a | 839 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
5fde2523 NK |
840 | char unit = 'M'; |
841 | ||
481f988a | 842 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
11ba2b85 IM |
843 | |
844 | if (total) | |
481f988a | 845 | ratio = 1000.0 * avg / total; |
5fde2523 NK |
846 | if (ratio < 0.001) { |
847 | ratio *= 1000; | |
848 | unit = 'K'; | |
849 | } | |
11ba2b85 | 850 | |
5fde2523 | 851 | fprintf(output, " # %8.3f %c/sec ", ratio, unit); |
a5d243d0 | 852 | } else { |
4aa9015f | 853 | fprintf(output, " "); |
44175b6f | 854 | } |
44175b6f IM |
855 | } |
856 | ||
2996f5dd IM |
857 | /* |
858 | * Print out the results of a single counter: | |
f5b4a9c3 | 859 | * aggregated counts in system-wide mode |
2996f5dd | 860 | */ |
69aad6f1 | 861 | static void print_counter_aggr(struct perf_evsel *counter) |
2996f5dd | 862 | { |
69aad6f1 ACM |
863 | struct perf_stat *ps = counter->priv; |
864 | double avg = avg_stats(&ps->res_stats[0]); | |
c52b12ed | 865 | int scaled = counter->counts->scaled; |
2996f5dd | 866 | |
2996f5dd | 867 | if (scaled == -1) { |
4aa9015f | 868 | fprintf(output, "%*s%s%*s", |
d7470b6a | 869 | csv_output ? 0 : 18, |
2cee77c4 | 870 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
023695d9 SE |
871 | csv_sep, |
872 | csv_output ? 0 : -24, | |
7289f83c | 873 | perf_evsel__name(counter)); |
023695d9 SE |
874 | |
875 | if (counter->cgrp) | |
4aa9015f | 876 | fprintf(output, "%s%s", csv_sep, counter->cgrp->name); |
023695d9 | 877 | |
4aa9015f | 878 | fputc('\n', output); |
2996f5dd IM |
879 | return; |
880 | } | |
c04f5e5d | 881 | |
44175b6f | 882 | if (nsec_counter(counter)) |
f5b4a9c3 | 883 | nsec_printout(-1, counter, avg); |
44175b6f | 884 | else |
f5b4a9c3 | 885 | abs_printout(-1, counter, avg); |
849abde9 | 886 | |
3ae9a34d ZH |
887 | print_noise(counter, avg); |
888 | ||
d7470b6a | 889 | if (csv_output) { |
4aa9015f | 890 | fputc('\n', output); |
d7470b6a SE |
891 | return; |
892 | } | |
893 | ||
506d4bc8 PZ |
894 | if (scaled) { |
895 | double avg_enabled, avg_running; | |
896 | ||
69aad6f1 ACM |
897 | avg_enabled = avg_stats(&ps->res_stats[1]); |
898 | avg_running = avg_stats(&ps->res_stats[2]); | |
d7c29318 | 899 | |
4aa9015f | 900 | fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled); |
506d4bc8 | 901 | } |
4aa9015f | 902 | fprintf(output, "\n"); |
c04f5e5d IM |
903 | } |
904 | ||
f5b4a9c3 SE |
905 | /* |
906 | * Print out the results of a single counter: | |
907 | * does not use aggregated count in system-wide | |
908 | */ | |
69aad6f1 | 909 | static void print_counter(struct perf_evsel *counter) |
f5b4a9c3 SE |
910 | { |
911 | u64 ena, run, val; | |
912 | int cpu; | |
913 | ||
7e2ed097 | 914 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
c52b12ed ACM |
915 | val = counter->counts->cpu[cpu].val; |
916 | ena = counter->counts->cpu[cpu].ena; | |
917 | run = counter->counts->cpu[cpu].run; | |
f5b4a9c3 | 918 | if (run == 0 || ena == 0) { |
4aa9015f | 919 | fprintf(output, "CPU%*d%s%*s%s%*s", |
d7470b6a | 920 | csv_output ? 0 : -4, |
7e2ed097 | 921 | evsel_list->cpus->map[cpu], csv_sep, |
d7470b6a | 922 | csv_output ? 0 : 18, |
2cee77c4 DA |
923 | counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED, |
924 | csv_sep, | |
023695d9 | 925 | csv_output ? 0 : -24, |
7289f83c | 926 | perf_evsel__name(counter)); |
f5b4a9c3 | 927 | |
023695d9 | 928 | if (counter->cgrp) |
4aa9015f SE |
929 | fprintf(output, "%s%s", |
930 | csv_sep, counter->cgrp->name); | |
023695d9 | 931 | |
4aa9015f | 932 | fputc('\n', output); |
f5b4a9c3 SE |
933 | continue; |
934 | } | |
935 | ||
936 | if (nsec_counter(counter)) | |
937 | nsec_printout(cpu, counter, val); | |
938 | else | |
939 | abs_printout(cpu, counter, val); | |
940 | ||
d7470b6a SE |
941 | if (!csv_output) { |
942 | print_noise(counter, 1.0); | |
f5b4a9c3 | 943 | |
c6264def | 944 | if (run != ena) |
4aa9015f SE |
945 | fprintf(output, " (%.2f%%)", |
946 | 100.0 * run / ena); | |
f5b4a9c3 | 947 | } |
4aa9015f | 948 | fputc('\n', output); |
f5b4a9c3 SE |
949 | } |
950 | } | |
951 | ||
42202dd5 IM |
952 | static void print_stat(int argc, const char **argv) |
953 | { | |
69aad6f1 ACM |
954 | struct perf_evsel *counter; |
955 | int i; | |
42202dd5 | 956 | |
ddcacfa0 IM |
957 | fflush(stdout); |
958 | ||
d7470b6a | 959 | if (!csv_output) { |
4aa9015f SE |
960 | fprintf(output, "\n"); |
961 | fprintf(output, " Performance counter stats for "); | |
aa22dd49 | 962 | if (!perf_target__has_task(&target)) { |
4aa9015f | 963 | fprintf(output, "\'%s", argv[0]); |
d7470b6a | 964 | for (i = 1; i < argc; i++) |
4aa9015f | 965 | fprintf(output, " %s", argv[i]); |
20f946b4 NK |
966 | } else if (target.pid) |
967 | fprintf(output, "process id \'%s", target.pid); | |
d7470b6a | 968 | else |
20f946b4 | 969 | fprintf(output, "thread id \'%s", target.tid); |
44db76c8 | 970 | |
4aa9015f | 971 | fprintf(output, "\'"); |
d7470b6a | 972 | if (run_count > 1) |
4aa9015f SE |
973 | fprintf(output, " (%d runs)", run_count); |
974 | fprintf(output, ":\n\n"); | |
d7470b6a | 975 | } |
2996f5dd | 976 | |
f5b4a9c3 | 977 | if (no_aggr) { |
361c99a6 | 978 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
979 | print_counter(counter); |
980 | } else { | |
361c99a6 | 981 | list_for_each_entry(counter, &evsel_list->entries, node) |
f5b4a9c3 SE |
982 | print_counter_aggr(counter); |
983 | } | |
ddcacfa0 | 984 | |
d7470b6a | 985 | if (!csv_output) { |
c3305257 | 986 | if (!null_run) |
4aa9015f SE |
987 | fprintf(output, "\n"); |
988 | fprintf(output, " %17.9f seconds time elapsed", | |
d7470b6a SE |
989 | avg_stats(&walltime_nsecs_stats)/1e9); |
990 | if (run_count > 1) { | |
4aa9015f | 991 | fprintf(output, " "); |
f99844cb IM |
992 | print_noise_pct(stddev_stats(&walltime_nsecs_stats), |
993 | avg_stats(&walltime_nsecs_stats)); | |
d7470b6a | 994 | } |
4aa9015f | 995 | fprintf(output, "\n\n"); |
566747e6 | 996 | } |
ddcacfa0 IM |
997 | } |
998 | ||
f7b7c26e PZ |
999 | static volatile int signr = -1; |
1000 | ||
5242519b | 1001 | static void skip_signal(int signo) |
ddcacfa0 | 1002 | { |
6be2850e | 1003 | if(child_pid == -1) |
60666c63 LW |
1004 | done = 1; |
1005 | ||
f7b7c26e PZ |
1006 | signr = signo; |
1007 | } | |
1008 | ||
1009 | static void sig_atexit(void) | |
1010 | { | |
933da83a CW |
1011 | if (child_pid != -1) |
1012 | kill(child_pid, SIGTERM); | |
1013 | ||
f7b7c26e PZ |
1014 | if (signr == -1) |
1015 | return; | |
1016 | ||
1017 | signal(signr, SIG_DFL); | |
1018 | kill(getpid(), signr); | |
5242519b IM |
1019 | } |
1020 | ||
1021 | static const char * const stat_usage[] = { | |
60666c63 | 1022 | "perf stat [<options>] [<command>]", |
5242519b IM |
1023 | NULL |
1024 | }; | |
1025 | ||
1d037ca1 IT |
1026 | static int stat__set_big_num(const struct option *opt __maybe_unused, |
1027 | const char *s __maybe_unused, int unset) | |
d7470b6a SE |
1028 | { |
1029 | big_num_opt = unset ? 0 : 1; | |
1030 | return 0; | |
1031 | } | |
1032 | ||
4aa9015f SE |
1033 | static bool append_file; |
1034 | ||
5242519b | 1035 | static const struct option options[] = { |
361c99a6 | 1036 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
86847b62 | 1037 | "event selector. use 'perf list' to list available events", |
f120f9d5 | 1038 | parse_events_option), |
cfd748ae FW |
1039 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
1040 | "event filter", parse_filter), | |
2e6cdf99 SE |
1041 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
1042 | "child tasks do not inherit counters"), | |
20f946b4 | 1043 | OPT_STRING('p', "pid", &target.pid, "pid", |
b52956c9 | 1044 | "stat events on existing process id"), |
20f946b4 | 1045 | OPT_STRING('t', "tid", &target.tid, "tid", |
b52956c9 | 1046 | "stat events on existing thread id"), |
20f946b4 | 1047 | OPT_BOOLEAN('a', "all-cpus", &target.system_wide, |
3d632595 | 1048 | "system-wide collection from all CPUs"), |
43bece79 LM |
1049 | OPT_BOOLEAN('g', "group", &group, |
1050 | "put the counters into a counter group"), | |
b26bc5a7 | 1051 | OPT_BOOLEAN('c', "scale", &scale, |
3d632595 | 1052 | "scale/normalize counters"), |
c0555642 | 1053 | OPT_INCR('v', "verbose", &verbose, |
743ee1f8 | 1054 | "be more verbose (show counter open errors, etc)"), |
42202dd5 IM |
1055 | OPT_INTEGER('r', "repeat", &run_count, |
1056 | "repeat command and print average + stddev (max: 100)"), | |
0cfb7a13 IM |
1057 | OPT_BOOLEAN('n', "null", &null_run, |
1058 | "null run - dont start any counters"), | |
2cba3ffb | 1059 | OPT_INCR('d', "detailed", &detailed_run, |
c6264def | 1060 | "detailed run - start a lot of events"), |
f9cef0a9 IM |
1061 | OPT_BOOLEAN('S', "sync", &sync_run, |
1062 | "call sync() before starting a run"), | |
d7470b6a SE |
1063 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
1064 | "print large numbers with thousands\' separators", | |
1065 | stat__set_big_num), | |
20f946b4 | 1066 | OPT_STRING('C', "cpu", &target.cpu_list, "cpu", |
c45c6ea2 | 1067 | "list of cpus to monitor in system-wide"), |
f5b4a9c3 SE |
1068 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
1069 | "disable CPU count aggregation"), | |
d7470b6a SE |
1070 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
1071 | "print counts with custom separator"), | |
023695d9 SE |
1072 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
1073 | "monitor event in cgroup name only", | |
1074 | parse_cgroups), | |
4aa9015f SE |
1075 | OPT_STRING('o', "output", &output_name, "file", |
1076 | "output file name"), | |
1077 | OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), | |
56f3bae7 JC |
1078 | OPT_INTEGER(0, "log-fd", &output_fd, |
1079 | "log output to fd, instead of stderr"), | |
5242519b IM |
1080 | OPT_END() |
1081 | }; | |
1082 | ||
2cba3ffb IM |
1083 | /* |
1084 | * Add default attributes, if there were no attributes specified or | |
1085 | * if -d/--detailed, -d -d or -d -d -d is used: | |
1086 | */ | |
1087 | static int add_default_attributes(void) | |
1088 | { | |
2cba3ffb IM |
1089 | /* Set attrs if no event is selected and !null_run: */ |
1090 | if (null_run) | |
1091 | return 0; | |
1092 | ||
1093 | if (!evsel_list->nr_entries) { | |
79695e1b | 1094 | if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0) |
50d08e47 | 1095 | return -1; |
2cba3ffb IM |
1096 | } |
1097 | ||
1098 | /* Detailed events get appended to the event list: */ | |
1099 | ||
1100 | if (detailed_run < 1) | |
1101 | return 0; | |
1102 | ||
1103 | /* Append detailed run extra attributes: */ | |
79695e1b | 1104 | if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
50d08e47 | 1105 | return -1; |
2cba3ffb IM |
1106 | |
1107 | if (detailed_run < 2) | |
1108 | return 0; | |
1109 | ||
1110 | /* Append very detailed run extra attributes: */ | |
79695e1b | 1111 | if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
50d08e47 | 1112 | return -1; |
2cba3ffb IM |
1113 | |
1114 | if (detailed_run < 3) | |
1115 | return 0; | |
1116 | ||
1117 | /* Append very, very detailed run extra attributes: */ | |
79695e1b | 1118 | return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
2cba3ffb IM |
1119 | } |
1120 | ||
1d037ca1 | 1121 | int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) |
5242519b | 1122 | { |
69aad6f1 ACM |
1123 | struct perf_evsel *pos; |
1124 | int status = -ENOMEM; | |
4aa9015f | 1125 | const char *mode; |
42202dd5 | 1126 | |
5af52b51 SE |
1127 | setlocale(LC_ALL, ""); |
1128 | ||
7e2ed097 | 1129 | evsel_list = perf_evlist__new(NULL, NULL); |
361c99a6 ACM |
1130 | if (evsel_list == NULL) |
1131 | return -ENOMEM; | |
1132 | ||
a0541234 AB |
1133 | argc = parse_options(argc, argv, options, stat_usage, |
1134 | PARSE_OPT_STOP_AT_NON_OPTION); | |
d7470b6a | 1135 | |
4aa9015f SE |
1136 | output = stderr; |
1137 | if (output_name && strcmp(output_name, "-")) | |
1138 | output = NULL; | |
1139 | ||
56f3bae7 JC |
1140 | if (output_name && output_fd) { |
1141 | fprintf(stderr, "cannot use both --output and --log-fd\n"); | |
1142 | usage_with_options(stat_usage, options); | |
1143 | } | |
fc3e4d07 SE |
1144 | |
1145 | if (output_fd < 0) { | |
1146 | fprintf(stderr, "argument to --log-fd must be a > 0\n"); | |
1147 | usage_with_options(stat_usage, options); | |
1148 | } | |
1149 | ||
4aa9015f SE |
1150 | if (!output) { |
1151 | struct timespec tm; | |
1152 | mode = append_file ? "a" : "w"; | |
1153 | ||
1154 | output = fopen(output_name, mode); | |
1155 | if (!output) { | |
1156 | perror("failed to create output file"); | |
fceda7fe | 1157 | return -1; |
4aa9015f SE |
1158 | } |
1159 | clock_gettime(CLOCK_REALTIME, &tm); | |
1160 | fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); | |
fc3e4d07 | 1161 | } else if (output_fd > 0) { |
56f3bae7 JC |
1162 | mode = append_file ? "a" : "w"; |
1163 | output = fdopen(output_fd, mode); | |
1164 | if (!output) { | |
1165 | perror("Failed opening logfd"); | |
1166 | return -errno; | |
1167 | } | |
4aa9015f SE |
1168 | } |
1169 | ||
d4ffd04d | 1170 | if (csv_sep) { |
d7470b6a | 1171 | csv_output = true; |
d4ffd04d JC |
1172 | if (!strcmp(csv_sep, "\\t")) |
1173 | csv_sep = "\t"; | |
1174 | } else | |
d7470b6a SE |
1175 | csv_sep = DEFAULT_SEPARATOR; |
1176 | ||
1177 | /* | |
1178 | * let the spreadsheet do the pretty-printing | |
1179 | */ | |
1180 | if (csv_output) { | |
61a9f324 | 1181 | /* User explicitly passed -B? */ |
d7470b6a SE |
1182 | if (big_num_opt == 1) { |
1183 | fprintf(stderr, "-B option not supported with -x\n"); | |
1184 | usage_with_options(stat_usage, options); | |
1185 | } else /* Nope, so disable big number formatting */ | |
1186 | big_num = false; | |
1187 | } else if (big_num_opt == 0) /* User passed --no-big-num */ | |
1188 | big_num = false; | |
1189 | ||
aa22dd49 | 1190 | if (!argc && !perf_target__has_task(&target)) |
5242519b | 1191 | usage_with_options(stat_usage, options); |
9e9772c4 | 1192 | if (run_count <= 0) |
42202dd5 | 1193 | usage_with_options(stat_usage, options); |
ddcacfa0 | 1194 | |
023695d9 | 1195 | /* no_aggr, cgroup are for system-wide only */ |
aa22dd49 | 1196 | if ((no_aggr || nr_cgroups) && !perf_target__has_cpu(&target)) { |
023695d9 SE |
1197 | fprintf(stderr, "both cgroup and no-aggregation " |
1198 | "modes only available in system-wide mode\n"); | |
1199 | ||
f5b4a9c3 | 1200 | usage_with_options(stat_usage, options); |
023695d9 | 1201 | } |
f5b4a9c3 | 1202 | |
2cba3ffb IM |
1203 | if (add_default_attributes()) |
1204 | goto out; | |
ddcacfa0 | 1205 | |
4bd0f2d2 | 1206 | perf_target__validate(&target); |
5c98d466 | 1207 | |
77a6f014 | 1208 | if (perf_evlist__create_maps(evsel_list, &target) < 0) { |
aa22dd49 | 1209 | if (perf_target__has_task(&target)) |
77a6f014 | 1210 | pr_err("Problems finding threads of monitor\n"); |
aa22dd49 | 1211 | if (perf_target__has_cpu(&target)) |
77a6f014 | 1212 | perror("failed to parse CPUs map"); |
ddcacfa0 | 1213 | |
c45c6ea2 | 1214 | usage_with_options(stat_usage, options); |
60d567e2 ACM |
1215 | return -1; |
1216 | } | |
c45c6ea2 | 1217 | |
361c99a6 | 1218 | list_for_each_entry(pos, &evsel_list->entries, node) { |
c52b12ed | 1219 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
806fb630 | 1220 | perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0) |
69aad6f1 | 1221 | goto out_free_fd; |
d6d901c2 ZY |
1222 | } |
1223 | ||
58d7e993 IM |
1224 | /* |
1225 | * We dont want to block the signals - that would cause | |
1226 | * child tasks to inherit that and Ctrl-C would not work. | |
1227 | * What we want is for Ctrl-C to work in the exec()-ed | |
1228 | * task, but being ignored by perf stat itself: | |
1229 | */ | |
f7b7c26e | 1230 | atexit(sig_atexit); |
58d7e993 IM |
1231 | signal(SIGINT, skip_signal); |
1232 | signal(SIGALRM, skip_signal); | |
1233 | signal(SIGABRT, skip_signal); | |
1234 | ||
42202dd5 IM |
1235 | status = 0; |
1236 | for (run_idx = 0; run_idx < run_count; run_idx++) { | |
1237 | if (run_count != 1 && verbose) | |
4aa9015f SE |
1238 | fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
1239 | run_idx + 1); | |
f9cef0a9 IM |
1240 | |
1241 | if (sync_run) | |
1242 | sync(); | |
1243 | ||
42202dd5 IM |
1244 | status = run_perf_stat(argc, argv); |
1245 | } | |
1246 | ||
084ab9f8 ACM |
1247 | if (status != -1) |
1248 | print_stat(argc, argv); | |
69aad6f1 | 1249 | out_free_fd: |
361c99a6 | 1250 | list_for_each_entry(pos, &evsel_list->entries, node) |
69aad6f1 | 1251 | perf_evsel__free_stat_priv(pos); |
7e2ed097 | 1252 | perf_evlist__delete_maps(evsel_list); |
0015e2e1 ACM |
1253 | out: |
1254 | perf_evlist__delete(evsel_list); | |
42202dd5 | 1255 | return status; |
ddcacfa0 | 1256 | } |