Commit | Line | Data |
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a1645ce1 ZY |
1 | #include "builtin.h" |
2 | #include "perf.h" | |
3 | ||
bcf6edcd | 4 | #include "util/evsel.h" |
1afe1d14 | 5 | #include "util/evlist.h" |
a1645ce1 ZY |
6 | #include "util/util.h" |
7 | #include "util/cache.h" | |
8 | #include "util/symbol.h" | |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
11 | #include "util/session.h" | |
2e73f00f | 12 | #include "util/intlist.h" |
a1645ce1 ZY |
13 | #include "util/parse-options.h" |
14 | #include "util/trace-event.h" | |
a1645ce1 | 15 | #include "util/debug.h" |
bcf6edcd XG |
16 | #include "util/tool.h" |
17 | #include "util/stat.h" | |
1afe1d14 | 18 | #include "util/top.h" |
f5fc1412 | 19 | #include "util/data.h" |
d704ebda | 20 | #include "util/ordered-events.h" |
a1645ce1 ZY |
21 | |
22 | #include <sys/prctl.h> | |
87419c9a | 23 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 | 24 | #include <sys/timerfd.h> |
87419c9a | 25 | #endif |
a1645ce1 | 26 | |
1afe1d14 | 27 | #include <termios.h> |
a1645ce1 ZY |
28 | #include <semaphore.h> |
29 | #include <pthread.h> | |
30 | #include <math.h> | |
31 | ||
da50ad69 | 32 | #ifdef HAVE_KVM_STAT_SUPPORT |
44b38021 | 33 | #include <asm/kvm_perf.h> |
9daa8123 | 34 | #include "util/kvm-stat.h" |
bcf6edcd | 35 | |
9daa8123 AY |
36 | void exit_event_get_key(struct perf_evsel *evsel, |
37 | struct perf_sample *sample, | |
38 | struct event_key *key) | |
bcf6edcd XG |
39 | { |
40 | key->info = 0; | |
44b38021 | 41 | key->key = perf_evsel__intval(evsel, sample, KVM_EXIT_REASON); |
bcf6edcd XG |
42 | } |
43 | ||
9daa8123 | 44 | bool kvm_exit_event(struct perf_evsel *evsel) |
bcf6edcd | 45 | { |
44b38021 | 46 | return !strcmp(evsel->name, KVM_EXIT_TRACE); |
bcf6edcd XG |
47 | } |
48 | ||
9daa8123 AY |
49 | bool exit_event_begin(struct perf_evsel *evsel, |
50 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd | 51 | { |
14907e73 ACM |
52 | if (kvm_exit_event(evsel)) { |
53 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
54 | return true; |
55 | } | |
56 | ||
57 | return false; | |
58 | } | |
59 | ||
9daa8123 | 60 | bool kvm_entry_event(struct perf_evsel *evsel) |
bcf6edcd | 61 | { |
44b38021 | 62 | return !strcmp(evsel->name, KVM_ENTRY_TRACE); |
bcf6edcd XG |
63 | } |
64 | ||
9daa8123 AY |
65 | bool exit_event_end(struct perf_evsel *evsel, |
66 | struct perf_sample *sample __maybe_unused, | |
67 | struct event_key *key __maybe_unused) | |
bcf6edcd | 68 | { |
14907e73 | 69 | return kvm_entry_event(evsel); |
bcf6edcd XG |
70 | } |
71 | ||
df74c13b AY |
72 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, |
73 | struct exit_reasons_table *tbl, | |
74 | u64 exit_code) | |
bcf6edcd | 75 | { |
df74c13b | 76 | while (tbl->reason != NULL) { |
de332ac4 DA |
77 | if (tbl->exit_code == exit_code) |
78 | return tbl->reason; | |
79 | tbl++; | |
bcf6edcd XG |
80 | } |
81 | ||
82 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 83 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
84 | return "UNKNOWN"; |
85 | } | |
86 | ||
9daa8123 AY |
87 | void exit_event_decode_key(struct perf_kvm_stat *kvm, |
88 | struct event_key *key, | |
89 | char *decode) | |
bcf6edcd | 90 | { |
3be8e2a0 | 91 | const char *exit_reason = get_exit_reason(kvm, key->exit_reasons, |
df74c13b | 92 | key->key); |
bcf6edcd | 93 | |
44b38021 | 94 | scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason); |
bcf6edcd XG |
95 | } |
96 | ||
9daa8123 | 97 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd | 98 | { |
9daa8123 | 99 | struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops; |
bcf6edcd | 100 | |
9daa8123 AY |
101 | for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) { |
102 | if (!strcmp(events_ops->name, kvm->report_event)) { | |
103 | kvm->events_ops = events_ops->ops; | |
104 | return true; | |
105 | } | |
bcf6edcd XG |
106 | } |
107 | ||
108 | return false; | |
109 | } | |
110 | ||
bcf6edcd XG |
111 | struct vcpu_event_record { |
112 | int vcpu_id; | |
113 | u64 start_time; | |
114 | struct kvm_event *last_event; | |
115 | }; | |
116 | ||
bcf6edcd | 117 | |
3786063a | 118 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 119 | { |
b880deea | 120 | unsigned int i; |
bcf6edcd | 121 | |
b880deea | 122 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 123 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
124 | } |
125 | ||
87419c9a | 126 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
127 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
128 | { | |
129 | struct list_head *head; | |
130 | struct kvm_event *event; | |
131 | unsigned int i; | |
62d04dbf | 132 | int j; |
1afe1d14 DA |
133 | |
134 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
135 | head = &kvm_events_cache[i]; | |
136 | list_for_each_entry(event, head, hash_entry) { | |
137 | /* reset stats for event */ | |
62d04dbf DA |
138 | event->total.time = 0; |
139 | init_stats(&event->total.stats); | |
140 | ||
141 | for (j = 0; j < event->max_vcpu; ++j) { | |
142 | event->vcpu[j].time = 0; | |
143 | init_stats(&event->vcpu[j].stats); | |
144 | } | |
1afe1d14 DA |
145 | } |
146 | } | |
147 | } | |
87419c9a | 148 | #endif |
1afe1d14 | 149 | |
bcf6edcd XG |
150 | static int kvm_events_hash_fn(u64 key) |
151 | { | |
152 | return key & (EVENTS_CACHE_SIZE - 1); | |
153 | } | |
154 | ||
155 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
156 | { | |
157 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 158 | void *prev; |
bcf6edcd XG |
159 | |
160 | if (vcpu_id < event->max_vcpu) | |
161 | return true; | |
162 | ||
163 | while (event->max_vcpu <= vcpu_id) | |
164 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
165 | ||
6ca5f308 | 166 | prev = event->vcpu; |
bcf6edcd XG |
167 | event->vcpu = realloc(event->vcpu, |
168 | event->max_vcpu * sizeof(*event->vcpu)); | |
169 | if (!event->vcpu) { | |
6ca5f308 | 170 | free(prev); |
bcf6edcd XG |
171 | pr_err("Not enough memory\n"); |
172 | return false; | |
173 | } | |
174 | ||
175 | memset(event->vcpu + old_max_vcpu, 0, | |
176 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
177 | return true; | |
178 | } | |
179 | ||
180 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
181 | { | |
182 | struct kvm_event *event; | |
183 | ||
184 | event = zalloc(sizeof(*event)); | |
185 | if (!event) { | |
186 | pr_err("Not enough memory\n"); | |
187 | return NULL; | |
188 | } | |
189 | ||
190 | event->key = *key; | |
acb61fc8 | 191 | init_stats(&event->total.stats); |
bcf6edcd XG |
192 | return event; |
193 | } | |
194 | ||
3786063a | 195 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 196 | struct event_key *key) |
bcf6edcd XG |
197 | { |
198 | struct kvm_event *event; | |
199 | struct list_head *head; | |
200 | ||
201 | BUG_ON(key->key == INVALID_KEY); | |
202 | ||
de332ac4 | 203 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 204 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
205 | if (event->key.key == key->key && event->key.info == key->info) |
206 | return event; | |
355afe81 | 207 | } |
bcf6edcd XG |
208 | |
209 | event = kvm_alloc_init_event(key); | |
210 | if (!event) | |
211 | return NULL; | |
212 | ||
213 | list_add(&event->hash_entry, head); | |
214 | return event; | |
215 | } | |
216 | ||
3786063a | 217 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 218 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
219 | struct event_key *key, u64 timestamp) |
220 | { | |
221 | struct kvm_event *event = NULL; | |
222 | ||
223 | if (key->key != INVALID_KEY) | |
de332ac4 | 224 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
225 | |
226 | vcpu_record->last_event = event; | |
227 | vcpu_record->start_time = timestamp; | |
228 | return true; | |
229 | } | |
230 | ||
231 | static void | |
232 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
233 | { | |
234 | kvm_stats->time += time_diff; | |
235 | update_stats(&kvm_stats->stats, time_diff); | |
236 | } | |
237 | ||
238 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
239 | { | |
240 | struct kvm_event_stats *kvm_stats = &event->total; | |
241 | ||
242 | if (vcpu_id != -1) | |
243 | kvm_stats = &event->vcpu[vcpu_id]; | |
244 | ||
245 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
246 | avg_stats(&kvm_stats->stats)); | |
247 | } | |
248 | ||
249 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
250 | u64 time_diff) | |
251 | { | |
2aa8eab0 DA |
252 | if (vcpu_id == -1) { |
253 | kvm_update_event_stats(&event->total, time_diff); | |
254 | return true; | |
255 | } | |
bcf6edcd XG |
256 | |
257 | if (!kvm_event_expand(event, vcpu_id)) | |
258 | return false; | |
259 | ||
260 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
261 | return true; | |
262 | } | |
263 | ||
3be8e2a0 AY |
264 | static bool is_child_event(struct perf_kvm_stat *kvm, |
265 | struct perf_evsel *evsel, | |
266 | struct perf_sample *sample, | |
267 | struct event_key *key) | |
268 | { | |
269 | struct child_event_ops *child_ops; | |
270 | ||
271 | child_ops = kvm->events_ops->child_ops; | |
272 | ||
273 | if (!child_ops) | |
274 | return false; | |
275 | ||
276 | for (; child_ops->name; child_ops++) { | |
277 | if (!strcmp(evsel->name, child_ops->name)) { | |
278 | child_ops->get_key(evsel, sample, key); | |
279 | return true; | |
280 | } | |
281 | } | |
282 | ||
283 | return false; | |
284 | } | |
285 | ||
286 | static bool handle_child_event(struct perf_kvm_stat *kvm, | |
287 | struct vcpu_event_record *vcpu_record, | |
288 | struct event_key *key, | |
289 | struct perf_sample *sample __maybe_unused) | |
290 | { | |
291 | struct kvm_event *event = NULL; | |
292 | ||
293 | if (key->key != INVALID_KEY) | |
294 | event = find_create_kvm_event(kvm, key); | |
295 | ||
296 | vcpu_record->last_event = event; | |
297 | ||
298 | return true; | |
299 | } | |
300 | ||
54c801ff AY |
301 | static bool skip_event(const char *event) |
302 | { | |
303 | const char * const *skip_events; | |
304 | ||
305 | for (skip_events = kvm_skip_events; *skip_events; skip_events++) | |
306 | if (!strcmp(event, *skip_events)) | |
307 | return true; | |
308 | ||
309 | return false; | |
310 | } | |
311 | ||
3786063a | 312 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
313 | struct vcpu_event_record *vcpu_record, |
314 | struct event_key *key, | |
70f7b4a7 | 315 | struct perf_sample *sample) |
bcf6edcd XG |
316 | { |
317 | struct kvm_event *event; | |
318 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
319 | int vcpu; |
320 | ||
321 | if (kvm->trace_vcpu == -1) | |
322 | vcpu = -1; | |
323 | else | |
324 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
325 | |
326 | event = vcpu_record->last_event; | |
327 | time_begin = vcpu_record->start_time; | |
328 | ||
329 | /* The begin event is not caught. */ | |
330 | if (!time_begin) | |
331 | return true; | |
332 | ||
333 | /* | |
334 | * In some case, the 'begin event' only records the start timestamp, | |
335 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
336 | */ | |
337 | ||
338 | /* Both begin and end events did not get the key. */ | |
339 | if (!event && key->key == INVALID_KEY) | |
340 | return true; | |
341 | ||
342 | if (!event) | |
de332ac4 | 343 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
344 | |
345 | if (!event) | |
346 | return false; | |
347 | ||
348 | vcpu_record->last_event = NULL; | |
349 | vcpu_record->start_time = 0; | |
350 | ||
1afe1d14 | 351 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 352 | if (sample->time < time_begin) { |
1afe1d14 DA |
353 | pr_debug("End time before begin time; skipping event.\n"); |
354 | return true; | |
355 | } | |
bcf6edcd | 356 | |
70f7b4a7 DA |
357 | time_diff = sample->time - time_begin; |
358 | ||
359 | if (kvm->duration && time_diff > kvm->duration) { | |
44b38021 | 360 | char decode[DECODE_STR_LEN]; |
70f7b4a7 DA |
361 | |
362 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
54c801ff | 363 | if (!skip_event(decode)) { |
70f7b4a7 DA |
364 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", |
365 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
366 | decode, time_diff/1000); | |
367 | } | |
368 | } | |
369 | ||
2aa8eab0 | 370 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
371 | } |
372 | ||
14907e73 ACM |
373 | static |
374 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
375 | struct perf_evsel *evsel, | |
376 | struct perf_sample *sample) | |
bcf6edcd XG |
377 | { |
378 | /* Only kvm_entry records vcpu id. */ | |
69e865c3 | 379 | if (!thread__priv(thread) && kvm_entry_event(evsel)) { |
bcf6edcd XG |
380 | struct vcpu_event_record *vcpu_record; |
381 | ||
14907e73 | 382 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 383 | if (!vcpu_record) { |
14907e73 | 384 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
385 | return NULL; |
386 | } | |
387 | ||
44b38021 | 388 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, VCPU_ID); |
69e865c3 | 389 | thread__set_priv(thread, vcpu_record); |
bcf6edcd XG |
390 | } |
391 | ||
69e865c3 | 392 | return thread__priv(thread); |
bcf6edcd XG |
393 | } |
394 | ||
3786063a | 395 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
396 | struct thread *thread, |
397 | struct perf_evsel *evsel, | |
14907e73 | 398 | struct perf_sample *sample) |
bcf6edcd XG |
399 | { |
400 | struct vcpu_event_record *vcpu_record; | |
3be8e2a0 AY |
401 | struct event_key key = { .key = INVALID_KEY, |
402 | .exit_reasons = kvm->exit_reasons }; | |
bcf6edcd | 403 | |
14907e73 | 404 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
405 | if (!vcpu_record) |
406 | return true; | |
407 | ||
2aa8eab0 DA |
408 | /* only process events for vcpus user cares about */ |
409 | if ((kvm->trace_vcpu != -1) && | |
410 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
411 | return true; | |
412 | ||
de332ac4 DA |
413 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
414 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 415 | |
3be8e2a0 AY |
416 | if (is_child_event(kvm, evsel, sample, &key)) |
417 | return handle_child_event(kvm, vcpu_record, &key, sample); | |
418 | ||
de332ac4 | 419 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 420 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
421 | |
422 | return true; | |
423 | } | |
424 | ||
bcf6edcd XG |
425 | #define GET_EVENT_KEY(func, field) \ |
426 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
427 | { \ | |
428 | if (vcpu == -1) \ | |
429 | return event->total.field; \ | |
430 | \ | |
431 | if (vcpu >= event->max_vcpu) \ | |
432 | return 0; \ | |
433 | \ | |
434 | return event->vcpu[vcpu].field; \ | |
435 | } | |
436 | ||
437 | #define COMPARE_EVENT_KEY(func, field) \ | |
438 | GET_EVENT_KEY(func, field) \ | |
439 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
440 | struct kvm_event *two, int vcpu)\ | |
441 | { \ | |
442 | return get_event_ ##func(one, vcpu) > \ | |
443 | get_event_ ##func(two, vcpu); \ | |
444 | } | |
445 | ||
446 | GET_EVENT_KEY(time, time); | |
447 | COMPARE_EVENT_KEY(count, stats.n); | |
448 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
449 | GET_EVENT_KEY(max, stats.max); |
450 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
451 | |
452 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
453 | { #name, compare_kvm_event_ ## compare_key } | |
454 | ||
455 | static struct kvm_event_key keys[] = { | |
456 | DEF_SORT_NAME_KEY(sample, count), | |
457 | DEF_SORT_NAME_KEY(time, mean), | |
458 | { NULL, NULL } | |
459 | }; | |
460 | ||
3786063a | 461 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
462 | { |
463 | int i; | |
464 | ||
465 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
466 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
467 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
468 | return true; |
469 | } | |
470 | } | |
471 | ||
de332ac4 | 472 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
473 | return false; |
474 | } | |
475 | ||
de332ac4 DA |
476 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
477 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 478 | { |
de332ac4 | 479 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
480 | struct rb_node *parent = NULL; |
481 | struct kvm_event *p; | |
482 | ||
483 | while (*rb) { | |
484 | p = container_of(*rb, struct kvm_event, rb); | |
485 | parent = *rb; | |
486 | ||
487 | if (bigger(event, p, vcpu)) | |
488 | rb = &(*rb)->rb_left; | |
489 | else | |
490 | rb = &(*rb)->rb_right; | |
491 | } | |
492 | ||
493 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 494 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
495 | } |
496 | ||
3786063a XG |
497 | static void |
498 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 499 | { |
de332ac4 DA |
500 | int vcpu = kvm->trace_vcpu; |
501 | ||
502 | kvm->total_count += get_event_count(event, vcpu); | |
503 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
504 | } |
505 | ||
506 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
507 | { | |
508 | return !!get_event_count(event, vcpu); | |
509 | } | |
510 | ||
3786063a | 511 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
512 | { |
513 | unsigned int i; | |
de332ac4 | 514 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
515 | struct kvm_event *event; |
516 | ||
355afe81 DA |
517 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
518 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 519 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
520 | update_total_count(kvm, event); |
521 | insert_to_result(&kvm->result, event, | |
522 | kvm->compare, vcpu); | |
bcf6edcd | 523 | } |
355afe81 DA |
524 | } |
525 | } | |
bcf6edcd XG |
526 | } |
527 | ||
528 | /* returns left most element of result, and erase it */ | |
de332ac4 | 529 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 530 | { |
de332ac4 | 531 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
532 | |
533 | if (!node) | |
534 | return NULL; | |
535 | ||
de332ac4 | 536 | rb_erase(node, result); |
bcf6edcd XG |
537 | return container_of(node, struct kvm_event, rb); |
538 | } | |
539 | ||
1afe1d14 | 540 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 541 | { |
1afe1d14 DA |
542 | int vcpu = kvm->trace_vcpu; |
543 | ||
bcf6edcd XG |
544 | pr_info("Analyze events for "); |
545 | ||
1f3e5b55 AY |
546 | if (kvm->opts.target.system_wide) |
547 | pr_info("all VMs, "); | |
548 | else if (kvm->opts.target.pid) | |
549 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
550 | else | |
551 | pr_info("dazed and confused on what is monitored, "); | |
1afe1d14 | 552 | |
bcf6edcd XG |
553 | if (vcpu == -1) |
554 | pr_info("all VCPUs:\n\n"); | |
555 | else | |
556 | pr_info("VCPU %d:\n\n", vcpu); | |
557 | } | |
558 | ||
1afe1d14 DA |
559 | static void show_timeofday(void) |
560 | { | |
561 | char date[64]; | |
562 | struct timeval tv; | |
563 | struct tm ltime; | |
564 | ||
565 | gettimeofday(&tv, NULL); | |
566 | if (localtime_r(&tv.tv_sec, <ime)) { | |
567 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
568 | pr_info("%s.%06ld", date, tv.tv_usec); | |
569 | } else | |
570 | pr_info("00:00:00.000000"); | |
571 | ||
572 | return; | |
573 | } | |
574 | ||
3786063a | 575 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd | 576 | { |
44b38021 | 577 | char decode[DECODE_STR_LEN]; |
bcf6edcd | 578 | struct kvm_event *event; |
de332ac4 | 579 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 580 | |
1afe1d14 DA |
581 | if (kvm->live) { |
582 | puts(CONSOLE_CLEAR); | |
583 | show_timeofday(); | |
584 | } | |
585 | ||
bcf6edcd | 586 | pr_info("\n\n"); |
1afe1d14 | 587 | print_vcpu_info(kvm); |
44b38021 | 588 | pr_info("%*s ", DECODE_STR_LEN, kvm->events_ops->name); |
bcf6edcd XG |
589 | pr_info("%10s ", "Samples"); |
590 | pr_info("%9s ", "Samples%"); | |
591 | ||
592 | pr_info("%9s ", "Time%"); | |
b048a24c CB |
593 | pr_info("%11s ", "Min Time"); |
594 | pr_info("%11s ", "Max Time"); | |
bcf6edcd XG |
595 | pr_info("%16s ", "Avg time"); |
596 | pr_info("\n\n"); | |
597 | ||
de332ac4 | 598 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 599 | u64 ecount, etime, max, min; |
bcf6edcd XG |
600 | |
601 | ecount = get_event_count(event, vcpu); | |
602 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
603 | max = get_event_max(event, vcpu); |
604 | min = get_event_min(event, vcpu); | |
bcf6edcd | 605 | |
de332ac4 | 606 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
44b38021 | 607 | pr_info("%*s ", DECODE_STR_LEN, decode); |
bcf6edcd | 608 | pr_info("%10llu ", (unsigned long long)ecount); |
de332ac4 DA |
609 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
610 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
b048a24c CB |
611 | pr_info("%9.2fus ", (double)min / 1e3); |
612 | pr_info("%9.2fus ", (double)max / 1e3); | |
bcf6edcd XG |
613 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, |
614 | kvm_event_rel_stddev(vcpu, event)); | |
615 | pr_info("\n"); | |
616 | } | |
617 | ||
e4f7637f DA |
618 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
619 | kvm->total_count, kvm->total_time / 1e3); | |
1afe1d14 DA |
620 | |
621 | if (kvm->lost_events) | |
622 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
623 | } | |
624 | ||
87419c9a | 625 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
626 | static int process_lost_event(struct perf_tool *tool, |
627 | union perf_event *event __maybe_unused, | |
628 | struct perf_sample *sample __maybe_unused, | |
629 | struct machine *machine __maybe_unused) | |
630 | { | |
631 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
632 | ||
633 | kvm->lost_events++; | |
634 | return 0; | |
bcf6edcd | 635 | } |
87419c9a | 636 | #endif |
bcf6edcd | 637 | |
2e73f00f DA |
638 | static bool skip_sample(struct perf_kvm_stat *kvm, |
639 | struct perf_sample *sample) | |
640 | { | |
641 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
642 | return true; | |
643 | ||
644 | return false; | |
645 | } | |
646 | ||
de332ac4 | 647 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
648 | union perf_event *event, |
649 | struct perf_sample *sample, | |
650 | struct perf_evsel *evsel, | |
651 | struct machine *machine) | |
652 | { | |
b91fc39f | 653 | int err = 0; |
2e73f00f | 654 | struct thread *thread; |
3786063a XG |
655 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
656 | tool); | |
bcf6edcd | 657 | |
2e73f00f DA |
658 | if (skip_sample(kvm, sample)) |
659 | return 0; | |
660 | ||
314add6b | 661 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
662 | if (thread == NULL) { |
663 | pr_debug("problem processing %d event, skipping it.\n", | |
664 | event->header.type); | |
665 | return -1; | |
666 | } | |
667 | ||
de332ac4 | 668 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
b91fc39f | 669 | err = -1; |
bcf6edcd | 670 | |
b91fc39f ACM |
671 | thread__put(thread); |
672 | return err; | |
bcf6edcd XG |
673 | } |
674 | ||
1afe1d14 | 675 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 676 | { |
1afe1d14 | 677 | char buf[64], *cpuid; |
65c647a6 | 678 | int err; |
1afe1d14 DA |
679 | |
680 | if (kvm->live) { | |
681 | err = get_cpuid(buf, sizeof(buf)); | |
682 | if (err != 0) { | |
65c647a6 | 683 | pr_err("Failed to look up CPU type\n"); |
1afe1d14 DA |
684 | return err; |
685 | } | |
686 | cpuid = buf; | |
687 | } else | |
688 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 689 | |
65c647a6 AY |
690 | if (!cpuid) { |
691 | pr_err("Failed to look up CPU type\n"); | |
692 | return -EINVAL; | |
1afe1d14 DA |
693 | } |
694 | ||
65c647a6 AY |
695 | err = cpu_isa_init(kvm, cpuid); |
696 | if (err == -ENOTSUP) | |
697 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 | 698 | |
65c647a6 | 699 | return err; |
1afe1d14 DA |
700 | } |
701 | ||
702 | static bool verify_vcpu(int vcpu) | |
703 | { | |
704 | if (vcpu != -1 && vcpu < 0) { | |
705 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
706 | return false; | |
707 | } | |
708 | ||
709 | return true; | |
710 | } | |
711 | ||
87419c9a | 712 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
713 | /* keeping the max events to a modest level to keep |
714 | * the processing of samples per mmap smooth. | |
715 | */ | |
716 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
717 | ||
718 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
719 | u64 *mmap_time) | |
720 | { | |
721 | union perf_event *event; | |
722 | struct perf_sample sample; | |
723 | s64 n = 0; | |
724 | int err; | |
725 | ||
726 | *mmap_time = ULLONG_MAX; | |
727 | while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { | |
728 | err = perf_evlist__parse_sample(kvm->evlist, event, &sample); | |
729 | if (err) { | |
8e50d384 | 730 | perf_evlist__mmap_consume(kvm->evlist, idx); |
1afe1d14 DA |
731 | pr_err("Failed to parse sample\n"); |
732 | return -1; | |
733 | } | |
734 | ||
b7b61cbe | 735 | err = perf_session__queue_event(kvm->session, event, &sample, 0); |
8e50d384 | 736 | /* |
b7b61cbe | 737 | * FIXME: Here we can't consume the event, as perf_session__queue_event will |
8e50d384 ZZ |
738 | * point to it, and it'll get possibly overwritten by the kernel. |
739 | */ | |
740 | perf_evlist__mmap_consume(kvm->evlist, idx); | |
741 | ||
1afe1d14 DA |
742 | if (err) { |
743 | pr_err("Failed to enqueue sample: %d\n", err); | |
744 | return -1; | |
745 | } | |
746 | ||
747 | /* save time stamp of our first sample for this mmap */ | |
748 | if (n == 0) | |
749 | *mmap_time = sample.time; | |
750 | ||
751 | /* limit events per mmap handled all at once */ | |
752 | n++; | |
753 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
754 | break; | |
755 | } | |
756 | ||
757 | return n; | |
758 | } | |
759 | ||
760 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
761 | { | |
762 | int i, err, throttled = 0; | |
763 | s64 n, ntotal = 0; | |
764 | u64 flush_time = ULLONG_MAX, mmap_time; | |
765 | ||
766 | for (i = 0; i < kvm->evlist->nr_mmaps; i++) { | |
767 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); | |
768 | if (n < 0) | |
769 | return -1; | |
770 | ||
771 | /* flush time is going to be the minimum of all the individual | |
772 | * mmap times. Essentially, we flush all the samples queued up | |
773 | * from the last pass under our minimal start time -- that leaves | |
774 | * a very small race for samples to come in with a lower timestamp. | |
775 | * The ioctl to return the perf_clock timestamp should close the | |
776 | * race entirely. | |
777 | */ | |
778 | if (mmap_time < flush_time) | |
779 | flush_time = mmap_time; | |
780 | ||
781 | ntotal += n; | |
782 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
783 | throttled = 1; | |
784 | } | |
785 | ||
786 | /* flush queue after each round in which we processed events */ | |
787 | if (ntotal) { | |
d704ebda ACM |
788 | struct ordered_events *oe = &kvm->session->ordered_events; |
789 | ||
790 | oe->next_flush = flush_time; | |
791 | err = ordered_events__flush(oe, OE_FLUSH__ROUND); | |
1afe1d14 DA |
792 | if (err) { |
793 | if (kvm->lost_events) | |
794 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
795 | kvm->lost_events); | |
796 | return err; | |
797 | } | |
798 | } | |
799 | ||
800 | return throttled; | |
801 | } | |
802 | ||
803 | static volatile int done; | |
804 | ||
805 | static void sig_handler(int sig __maybe_unused) | |
806 | { | |
807 | done = 1; | |
808 | } | |
809 | ||
810 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
811 | { | |
812 | struct itimerspec new_value; | |
813 | int rc = -1; | |
814 | ||
815 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
816 | if (kvm->timerfd < 0) { | |
817 | pr_err("timerfd_create failed\n"); | |
818 | goto out; | |
819 | } | |
820 | ||
821 | new_value.it_value.tv_sec = kvm->display_time; | |
822 | new_value.it_value.tv_nsec = 0; | |
823 | new_value.it_interval.tv_sec = kvm->display_time; | |
824 | new_value.it_interval.tv_nsec = 0; | |
825 | ||
826 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
827 | pr_err("timerfd_settime failed: %d\n", errno); | |
828 | close(kvm->timerfd); | |
829 | goto out; | |
830 | } | |
831 | ||
832 | rc = 0; | |
833 | out: | |
834 | return rc; | |
835 | } | |
836 | ||
837 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
838 | { | |
839 | uint64_t c; | |
840 | int rc; | |
841 | ||
842 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
843 | if (rc < 0) { | |
844 | if (errno == EAGAIN) | |
845 | return 0; | |
846 | ||
847 | pr_err("Failed to read timer fd: %d\n", errno); | |
848 | return -1; | |
849 | } | |
850 | ||
851 | if (rc != sizeof(uint64_t)) { | |
852 | pr_err("Error reading timer fd - invalid size returned\n"); | |
853 | return -1; | |
854 | } | |
855 | ||
856 | if (c != 1) | |
857 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
858 | ||
859 | /* update display */ | |
860 | sort_result(kvm); | |
861 | print_result(kvm); | |
862 | ||
863 | /* reset counts */ | |
864 | clear_events_cache_stats(kvm->kvm_events_cache); | |
865 | kvm->total_count = 0; | |
866 | kvm->total_time = 0; | |
867 | kvm->lost_events = 0; | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static int fd_set_nonblock(int fd) | |
873 | { | |
874 | long arg = 0; | |
875 | ||
876 | arg = fcntl(fd, F_GETFL); | |
877 | if (arg < 0) { | |
878 | pr_err("Failed to get current flags for fd %d\n", fd); | |
879 | return -1; | |
880 | } | |
881 | ||
882 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
883 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
884 | return -1; | |
885 | } | |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
d5b4130a | 890 | static int perf_kvm__handle_stdin(void) |
1afe1d14 DA |
891 | { |
892 | int c; | |
893 | ||
1afe1d14 | 894 | c = getc(stdin); |
1afe1d14 DA |
895 | if (c == 'q') |
896 | return 1; | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
901 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
902 | { | |
1ca72260 | 903 | int nr_stdin, ret, err = -EINVAL; |
d5b4130a | 904 | struct termios save; |
1afe1d14 DA |
905 | |
906 | /* live flag must be set first */ | |
907 | kvm->live = true; | |
908 | ||
909 | ret = cpu_isa_config(kvm); | |
910 | if (ret < 0) | |
911 | return ret; | |
912 | ||
913 | if (!verify_vcpu(kvm->trace_vcpu) || | |
914 | !select_key(kvm) || | |
915 | !register_kvm_events_ops(kvm)) { | |
916 | goto out; | |
917 | } | |
918 | ||
d5b4130a | 919 | set_term_quiet_input(&save); |
1afe1d14 DA |
920 | init_kvm_event_record(kvm); |
921 | ||
1afe1d14 DA |
922 | signal(SIGINT, sig_handler); |
923 | signal(SIGTERM, sig_handler); | |
924 | ||
1afe1d14 DA |
925 | /* add timer fd */ |
926 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
927 | err = -1; | |
928 | goto out; | |
929 | } | |
930 | ||
fe636add | 931 | if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) |
0a04c9e0 ACM |
932 | goto out; |
933 | ||
0cae013c JO |
934 | nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin)); |
935 | if (nr_stdin < 0) | |
0a04c9e0 ACM |
936 | goto out; |
937 | ||
1afe1d14 DA |
938 | if (fd_set_nonblock(fileno(stdin)) != 0) |
939 | goto out; | |
940 | ||
941 | /* everything is good - enable the events and process */ | |
942 | perf_evlist__enable(kvm->evlist); | |
943 | ||
944 | while (!done) { | |
1ca72260 | 945 | struct fdarray *fda = &kvm->evlist->pollfd; |
1afe1d14 DA |
946 | int rc; |
947 | ||
948 | rc = perf_kvm__mmap_read(kvm); | |
949 | if (rc < 0) | |
950 | break; | |
951 | ||
952 | err = perf_kvm__handle_timerfd(kvm); | |
953 | if (err) | |
954 | goto out; | |
955 | ||
1ca72260 | 956 | if (fda->entries[nr_stdin].revents & POLLIN) |
d5b4130a | 957 | done = perf_kvm__handle_stdin(); |
1afe1d14 DA |
958 | |
959 | if (!rc && !done) | |
1ca72260 | 960 | err = fdarray__poll(fda, 100); |
1afe1d14 DA |
961 | } |
962 | ||
963 | perf_evlist__disable(kvm->evlist); | |
964 | ||
965 | if (err == 0) { | |
966 | sort_result(kvm); | |
967 | print_result(kvm); | |
968 | } | |
969 | ||
970 | out: | |
971 | if (kvm->timerfd >= 0) | |
972 | close(kvm->timerfd); | |
973 | ||
d5b4130a | 974 | tcsetattr(0, TCSAFLUSH, &save); |
1afe1d14 DA |
975 | return err; |
976 | } | |
977 | ||
978 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
979 | { | |
980 | int err, rc = -1; | |
981 | struct perf_evsel *pos; | |
982 | struct perf_evlist *evlist = kvm->evlist; | |
f9f33fdb | 983 | char sbuf[STRERR_BUFSIZE]; |
1afe1d14 DA |
984 | |
985 | perf_evlist__config(evlist, &kvm->opts); | |
986 | ||
987 | /* | |
988 | * Note: exclude_{guest,host} do not apply here. | |
989 | * This command processes KVM tracepoints from host only | |
990 | */ | |
0050f7aa | 991 | evlist__for_each(evlist, pos) { |
1afe1d14 DA |
992 | struct perf_event_attr *attr = &pos->attr; |
993 | ||
994 | /* make sure these *are* set */ | |
e71aa283 AH |
995 | perf_evsel__set_sample_bit(pos, TID); |
996 | perf_evsel__set_sample_bit(pos, TIME); | |
997 | perf_evsel__set_sample_bit(pos, CPU); | |
998 | perf_evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 999 | /* make sure these are *not*; want as small a sample as possible */ |
e71aa283 AH |
1000 | perf_evsel__reset_sample_bit(pos, PERIOD); |
1001 | perf_evsel__reset_sample_bit(pos, IP); | |
1002 | perf_evsel__reset_sample_bit(pos, CALLCHAIN); | |
1003 | perf_evsel__reset_sample_bit(pos, ADDR); | |
1004 | perf_evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1005 | attr->mmap = 0; |
1006 | attr->comm = 0; | |
1007 | attr->task = 0; | |
1008 | ||
1009 | attr->sample_period = 1; | |
1010 | ||
1011 | attr->watermark = 0; | |
1012 | attr->wakeup_events = 1000; | |
1013 | ||
1014 | /* will enable all once we are ready */ | |
1015 | attr->disabled = 1; | |
1016 | } | |
1017 | ||
1018 | err = perf_evlist__open(evlist); | |
1019 | if (err < 0) { | |
f9f33fdb MH |
1020 | printf("Couldn't create the events: %s\n", |
1021 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
1afe1d14 | 1022 | goto out; |
bcf6edcd XG |
1023 | } |
1024 | ||
1afe1d14 | 1025 | if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { |
f9f33fdb MH |
1026 | ui__error("Failed to mmap the events: %s\n", |
1027 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
1afe1d14 DA |
1028 | perf_evlist__close(evlist); |
1029 | goto out; | |
1030 | } | |
1031 | ||
1032 | rc = 0; | |
1033 | ||
1034 | out: | |
1035 | return rc; | |
bcf6edcd | 1036 | } |
87419c9a | 1037 | #endif |
bcf6edcd | 1038 | |
3786063a | 1039 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1040 | { |
bcf6edcd XG |
1041 | int ret; |
1042 | ||
de332ac4 DA |
1043 | struct perf_tool eops = { |
1044 | .sample = process_sample_event, | |
1045 | .comm = perf_event__process_comm, | |
0a8cb85c | 1046 | .ordered_events = true, |
de332ac4 | 1047 | }; |
f5fc1412 | 1048 | struct perf_data_file file = { |
476b3a86 | 1049 | .path = kvm->file_name, |
f5fc1412 | 1050 | .mode = PERF_DATA_MODE_READ, |
8cc5ec1f | 1051 | .force = kvm->force, |
f5fc1412 | 1052 | }; |
de332ac4 DA |
1053 | |
1054 | kvm->tool = eops; | |
f5fc1412 | 1055 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
de332ac4 | 1056 | if (!kvm->session) { |
bcf6edcd | 1057 | pr_err("Initializing perf session failed\n"); |
52e02834 | 1058 | return -1; |
bcf6edcd XG |
1059 | } |
1060 | ||
0a7e6d1b | 1061 | symbol__init(&kvm->session->header.env); |
14d37f38 | 1062 | |
41b98360 TS |
1063 | if (!perf_session__has_traces(kvm->session, "kvm record")) { |
1064 | ret = -EINVAL; | |
1065 | goto out_delete; | |
1066 | } | |
bcf6edcd XG |
1067 | |
1068 | /* | |
1069 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1070 | * traced in the old kernel. | |
1071 | */ | |
1afe1d14 | 1072 | ret = cpu_isa_config(kvm); |
bcf6edcd | 1073 | if (ret < 0) |
41b98360 TS |
1074 | goto out_delete; |
1075 | ||
1076 | ret = perf_session__process_events(kvm->session); | |
bcf6edcd | 1077 | |
41b98360 TS |
1078 | out_delete: |
1079 | perf_session__delete(kvm->session); | |
1080 | return ret; | |
bcf6edcd XG |
1081 | } |
1082 | ||
2e73f00f DA |
1083 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1084 | { | |
3ae4a76a AY |
1085 | if (kvm->opts.target.pid) { |
1086 | kvm->pid_list = intlist__new(kvm->opts.target.pid); | |
2e73f00f DA |
1087 | if (kvm->pid_list == NULL) { |
1088 | pr_err("Error parsing process id string\n"); | |
1089 | return -EINVAL; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
3786063a | 1096 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1097 | { |
1098 | int ret = -EINVAL; | |
de332ac4 | 1099 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1100 | |
2e73f00f DA |
1101 | if (parse_target_str(kvm) != 0) |
1102 | goto exit; | |
1103 | ||
bcf6edcd XG |
1104 | if (!verify_vcpu(vcpu)) |
1105 | goto exit; | |
1106 | ||
de332ac4 | 1107 | if (!select_key(kvm)) |
bcf6edcd XG |
1108 | goto exit; |
1109 | ||
de332ac4 | 1110 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1111 | goto exit; |
1112 | ||
de332ac4 | 1113 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1114 | setup_pager(); |
1115 | ||
de332ac4 | 1116 | ret = read_events(kvm); |
bcf6edcd XG |
1117 | if (ret) |
1118 | goto exit; | |
1119 | ||
de332ac4 DA |
1120 | sort_result(kvm); |
1121 | print_result(kvm); | |
1122 | ||
bcf6edcd XG |
1123 | exit: |
1124 | return ret; | |
1125 | } | |
1126 | ||
bcf6edcd XG |
1127 | #define STRDUP_FAIL_EXIT(s) \ |
1128 | ({ char *_p; \ | |
1129 | _p = strdup(s); \ | |
1130 | if (!_p) \ | |
1131 | return -ENOMEM; \ | |
1132 | _p; \ | |
1133 | }) | |
1134 | ||
3786063a XG |
1135 | static int |
1136 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd | 1137 | { |
9daa8123 | 1138 | unsigned int rec_argc, i, j, events_tp_size; |
bcf6edcd | 1139 | const char **rec_argv; |
8fdd84c4 DA |
1140 | const char * const record_args[] = { |
1141 | "record", | |
1142 | "-R", | |
8fdd84c4 DA |
1143 | "-m", "1024", |
1144 | "-c", "1", | |
1145 | }; | |
f45d20ff NK |
1146 | const char * const kvm_stat_record_usage[] = { |
1147 | "perf kvm stat record [<options>]", | |
1148 | NULL | |
1149 | }; | |
9daa8123 AY |
1150 | const char * const *events_tp; |
1151 | events_tp_size = 0; | |
1152 | ||
1153 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) | |
1154 | events_tp_size++; | |
bcf6edcd | 1155 | |
8fdd84c4 | 1156 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
9daa8123 | 1157 | 2 * events_tp_size; |
bcf6edcd XG |
1158 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1159 | ||
1160 | if (rec_argv == NULL) | |
1161 | return -ENOMEM; | |
1162 | ||
1163 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1164 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1165 | ||
9daa8123 | 1166 | for (j = 0; j < events_tp_size; j++) { |
8fdd84c4 DA |
1167 | rec_argv[i++] = "-e"; |
1168 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1169 | } | |
1170 | ||
bcf6edcd | 1171 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1172 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1173 | |
1174 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1175 | rec_argv[i] = argv[j]; | |
1176 | ||
f45d20ff NK |
1177 | set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); |
1178 | set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); | |
1179 | set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); | |
1180 | ||
1181 | set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); | |
1182 | set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); | |
1183 | set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); | |
1184 | set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); | |
1185 | set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); | |
1186 | set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); | |
1187 | set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); | |
1188 | set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); | |
1189 | set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); | |
1190 | set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); | |
1191 | set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); | |
1192 | set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); | |
1193 | set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); | |
1194 | set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); | |
1195 | set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); | |
1196 | ||
1197 | record_usage = kvm_stat_record_usage; | |
bcf6edcd XG |
1198 | return cmd_record(i, rec_argv, NULL); |
1199 | } | |
1200 | ||
3786063a XG |
1201 | static int |
1202 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1203 | { |
1204 | const struct option kvm_events_report_options[] = { | |
1205 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
3be8e2a0 AY |
1206 | "event for reporting: vmexit, " |
1207 | "mmio (x86 only), ioport (x86 only)"), | |
de332ac4 DA |
1208 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1209 | "vcpu id to report"), | |
1210 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1211 | "key for sorting: sample(sort by samples number)" | |
1212 | " time (sort by avg time)"), | |
3ae4a76a | 1213 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", |
2e73f00f | 1214 | "analyze events only for given process id(s)"), |
8cc5ec1f | 1215 | OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), |
de332ac4 DA |
1216 | OPT_END() |
1217 | }; | |
bcf6edcd | 1218 | |
de332ac4 DA |
1219 | const char * const kvm_events_report_usage[] = { |
1220 | "perf kvm stat report [<options>]", | |
1221 | NULL | |
1222 | }; | |
bcf6edcd | 1223 | |
bcf6edcd XG |
1224 | if (argc) { |
1225 | argc = parse_options(argc, argv, | |
1226 | kvm_events_report_options, | |
1227 | kvm_events_report_usage, 0); | |
1228 | if (argc) | |
1229 | usage_with_options(kvm_events_report_usage, | |
1230 | kvm_events_report_options); | |
1231 | } | |
1232 | ||
f181957c AY |
1233 | if (!kvm->opts.target.pid) |
1234 | kvm->opts.target.system_wide = true; | |
1235 | ||
de332ac4 | 1236 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1237 | } |
1238 | ||
87419c9a | 1239 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1240 | static struct perf_evlist *kvm_live_event_list(void) |
1241 | { | |
1242 | struct perf_evlist *evlist; | |
1243 | char *tp, *name, *sys; | |
1afe1d14 | 1244 | int err = -1; |
9daa8123 | 1245 | const char * const *events_tp; |
1afe1d14 DA |
1246 | |
1247 | evlist = perf_evlist__new(); | |
1248 | if (evlist == NULL) | |
1249 | return NULL; | |
1250 | ||
9daa8123 | 1251 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) { |
1afe1d14 | 1252 | |
9daa8123 | 1253 | tp = strdup(*events_tp); |
1afe1d14 DA |
1254 | if (tp == NULL) |
1255 | goto out; | |
1256 | ||
1257 | /* split tracepoint into subsystem and name */ | |
1258 | sys = tp; | |
1259 | name = strchr(tp, ':'); | |
1260 | if (name == NULL) { | |
1261 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
9daa8123 | 1262 | *events_tp); |
1afe1d14 DA |
1263 | free(tp); |
1264 | goto out; | |
1265 | } | |
1266 | *name = '\0'; | |
1267 | name++; | |
1268 | ||
1269 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
9daa8123 | 1270 | pr_err("Failed to add %s tracepoint to the list\n", *events_tp); |
1afe1d14 DA |
1271 | free(tp); |
1272 | goto out; | |
1273 | } | |
1274 | ||
1275 | free(tp); | |
1276 | } | |
1277 | ||
1278 | err = 0; | |
1279 | ||
1280 | out: | |
1281 | if (err) { | |
1282 | perf_evlist__delete(evlist); | |
1283 | evlist = NULL; | |
1284 | } | |
1285 | ||
1286 | return evlist; | |
1287 | } | |
1288 | ||
1289 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1290 | int argc, const char **argv) | |
1291 | { | |
1292 | char errbuf[BUFSIZ]; | |
1293 | int err; | |
1294 | ||
1295 | const struct option live_options[] = { | |
1296 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1297 | "record events on existing process id"), | |
994a1f78 JO |
1298 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
1299 | "number of mmap data pages", | |
1300 | perf_evlist__parse_mmap_pages), | |
1afe1d14 DA |
1301 | OPT_INCR('v', "verbose", &verbose, |
1302 | "be more verbose (show counter open errors, etc)"), | |
1303 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1304 | "system-wide collection from all CPUs"), | |
1305 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1306 | "time in seconds between display updates"), | |
1307 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
99d348a8 AY |
1308 | "event for reporting: " |
1309 | "vmexit, mmio (x86 only), ioport (x86 only)"), | |
1afe1d14 DA |
1310 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1311 | "vcpu id to report"), | |
1312 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1313 | "key for sorting: sample(sort by samples number)" | |
1314 | " time (sort by avg time)"), | |
70f7b4a7 | 1315 | OPT_U64(0, "duration", &kvm->duration, |
3be8e2a0 AY |
1316 | "show events other than" |
1317 | " HLT (x86 only) or Wait state (s390 only)" | |
1318 | " that take longer than duration usecs"), | |
9d9cad76 KL |
1319 | OPT_UINTEGER(0, "proc-map-timeout", &kvm->opts.proc_map_timeout, |
1320 | "per thread proc mmap processing timeout in ms"), | |
1afe1d14 DA |
1321 | OPT_END() |
1322 | }; | |
1323 | const char * const live_usage[] = { | |
1324 | "perf kvm stat live [<options>]", | |
1325 | NULL | |
1326 | }; | |
f5fc1412 JO |
1327 | struct perf_data_file file = { |
1328 | .mode = PERF_DATA_MODE_WRITE, | |
1329 | }; | |
1afe1d14 DA |
1330 | |
1331 | ||
1332 | /* event handling */ | |
1333 | kvm->tool.sample = process_sample_event; | |
1334 | kvm->tool.comm = perf_event__process_comm; | |
1335 | kvm->tool.exit = perf_event__process_exit; | |
1336 | kvm->tool.fork = perf_event__process_fork; | |
1337 | kvm->tool.lost = process_lost_event; | |
0a8cb85c | 1338 | kvm->tool.ordered_events = true; |
1afe1d14 DA |
1339 | perf_tool__fill_defaults(&kvm->tool); |
1340 | ||
1341 | /* set defaults */ | |
1342 | kvm->display_time = 1; | |
1343 | kvm->opts.user_interval = 1; | |
1344 | kvm->opts.mmap_pages = 512; | |
1345 | kvm->opts.target.uses_mmap = false; | |
1346 | kvm->opts.target.uid_str = NULL; | |
1347 | kvm->opts.target.uid = UINT_MAX; | |
9d9cad76 | 1348 | kvm->opts.proc_map_timeout = 500; |
1afe1d14 | 1349 | |
0a7e6d1b | 1350 | symbol__init(NULL); |
1afe1d14 DA |
1351 | disable_buildid_cache(); |
1352 | ||
1353 | use_browser = 0; | |
1afe1d14 DA |
1354 | |
1355 | if (argc) { | |
1356 | argc = parse_options(argc, argv, live_options, | |
1357 | live_usage, 0); | |
1358 | if (argc) | |
1359 | usage_with_options(live_usage, live_options); | |
1360 | } | |
1361 | ||
70f7b4a7 DA |
1362 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1363 | ||
1afe1d14 DA |
1364 | /* |
1365 | * target related setups | |
1366 | */ | |
602ad878 | 1367 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1368 | if (err) { |
602ad878 | 1369 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1370 | ui__warning("%s", errbuf); |
1371 | } | |
1372 | ||
602ad878 | 1373 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1374 | kvm->opts.target.system_wide = true; |
1375 | ||
1376 | ||
1377 | /* | |
1378 | * generate the event list | |
1379 | */ | |
1380 | kvm->evlist = kvm_live_event_list(); | |
1381 | if (kvm->evlist == NULL) { | |
1382 | err = -1; | |
1383 | goto out; | |
1384 | } | |
1385 | ||
1386 | symbol_conf.nr_events = kvm->evlist->nr_entries; | |
1387 | ||
1388 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) | |
1389 | usage_with_options(live_usage, live_options); | |
1390 | ||
1391 | /* | |
1392 | * perf session | |
1393 | */ | |
f5fc1412 | 1394 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
1afe1d14 | 1395 | if (kvm->session == NULL) { |
52e02834 | 1396 | err = -1; |
1afe1d14 DA |
1397 | goto out; |
1398 | } | |
1399 | kvm->session->evlist = kvm->evlist; | |
1400 | perf_session__set_id_hdr_size(kvm->session); | |
673d659f | 1401 | ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); |
a33fbd56 | 1402 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
9d9cad76 | 1403 | kvm->evlist->threads, false, kvm->opts.proc_map_timeout); |
1afe1d14 DA |
1404 | err = kvm_live_open_events(kvm); |
1405 | if (err) | |
1406 | goto out; | |
1407 | ||
1408 | err = kvm_events_live_report(kvm); | |
1409 | ||
1410 | out: | |
1afe1d14 DA |
1411 | if (kvm->session) |
1412 | perf_session__delete(kvm->session); | |
1413 | kvm->session = NULL; | |
03ad9747 | 1414 | if (kvm->evlist) |
1afe1d14 | 1415 | perf_evlist__delete(kvm->evlist); |
1afe1d14 DA |
1416 | |
1417 | return err; | |
1418 | } | |
87419c9a | 1419 | #endif |
1afe1d14 | 1420 | |
bcf6edcd XG |
1421 | static void print_kvm_stat_usage(void) |
1422 | { | |
1423 | printf("Usage: perf kvm stat <command>\n\n"); | |
1424 | ||
1425 | printf("# Available commands:\n"); | |
1426 | printf("\trecord: record kvm events\n"); | |
1427 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1428 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1429 | |
1430 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1431 | } | |
1432 | ||
3786063a | 1433 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1434 | { |
3786063a XG |
1435 | struct perf_kvm_stat kvm = { |
1436 | .file_name = file_name, | |
1437 | ||
1438 | .trace_vcpu = -1, | |
1439 | .report_event = "vmexit", | |
1440 | .sort_key = "sample", | |
1441 | ||
3786063a XG |
1442 | }; |
1443 | ||
bcf6edcd XG |
1444 | if (argc == 1) { |
1445 | print_kvm_stat_usage(); | |
1446 | goto perf_stat; | |
1447 | } | |
1448 | ||
1449 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1450 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1451 | |
1452 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1453 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1454 | |
87419c9a | 1455 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1456 | if (!strncmp(argv[1], "live", 4)) |
1457 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1458 | #endif |
1afe1d14 | 1459 | |
bcf6edcd XG |
1460 | perf_stat: |
1461 | return cmd_stat(argc, argv, NULL); | |
1462 | } | |
da50ad69 | 1463 | #endif /* HAVE_KVM_STAT_SUPPORT */ |
bcf6edcd | 1464 | |
3786063a | 1465 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1466 | { |
1467 | int rec_argc, i = 0, j; | |
1468 | const char **rec_argv; | |
1469 | ||
1470 | rec_argc = argc + 2; | |
1471 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1472 | rec_argv[i++] = strdup("record"); | |
1473 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1474 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1475 | for (j = 1; j < argc; j++, i++) |
1476 | rec_argv[i] = argv[j]; | |
1477 | ||
1478 | BUG_ON(i != rec_argc); | |
1479 | ||
1480 | return cmd_record(i, rec_argv, NULL); | |
1481 | } | |
1482 | ||
3786063a | 1483 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1484 | { |
1485 | int rec_argc, i = 0, j; | |
1486 | const char **rec_argv; | |
1487 | ||
1488 | rec_argc = argc + 2; | |
1489 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1490 | rec_argv[i++] = strdup("report"); | |
1491 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1492 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1493 | for (j = 1; j < argc; j++, i++) |
1494 | rec_argv[i] = argv[j]; | |
1495 | ||
1496 | BUG_ON(i != rec_argc); | |
1497 | ||
1498 | return cmd_report(i, rec_argv, NULL); | |
1499 | } | |
1500 | ||
3786063a XG |
1501 | static int |
1502 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1503 | { |
1504 | int rec_argc, i = 0, j; | |
1505 | const char **rec_argv; | |
1506 | ||
1507 | rec_argc = argc + 2; | |
1508 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1509 | rec_argv[i++] = strdup("buildid-list"); | |
1510 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1511 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1512 | for (j = 1; j < argc; j++, i++) |
1513 | rec_argv[i] = argv[j]; | |
1514 | ||
1515 | BUG_ON(i != rec_argc); | |
1516 | ||
1517 | return cmd_buildid_list(i, rec_argv, NULL); | |
1518 | } | |
1519 | ||
1d037ca1 | 1520 | int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused) |
a1645ce1 | 1521 | { |
20914ce5 | 1522 | const char *file_name = NULL; |
de332ac4 | 1523 | const struct option kvm_options[] = { |
3786063a | 1524 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1525 | "Input file name"), |
3786063a | 1526 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1527 | "Output file name"), |
1528 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1529 | "Collect guest os data"), | |
1530 | OPT_BOOLEAN(0, "host", &perf_host, | |
1531 | "Collect host os data"), | |
1532 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1533 | "guest mount directory under which every guest os" | |
1534 | " instance has a subdir"), | |
1535 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1536 | "file", "file saving guest os vmlinux"), | |
1537 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1538 | "file", "file saving guest os /proc/kallsyms"), | |
1539 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1540 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1541 | OPT_INCR('v', "verbose", &verbose, |
1542 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1543 | OPT_END() |
1544 | }; | |
1545 | ||
09a71b97 RR |
1546 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1547 | "buildid-list", "stat", NULL }; | |
1548 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1549 | |
1aed2671 JR |
1550 | perf_host = 0; |
1551 | perf_guest = 1; | |
a1645ce1 | 1552 | |
09a71b97 RR |
1553 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1554 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1555 | if (!argc) |
1556 | usage_with_options(kvm_usage, kvm_options); | |
1557 | ||
1558 | if (!perf_host) | |
1559 | perf_guest = 1; | |
1560 | ||
3786063a | 1561 | if (!file_name) { |
e1a2b174 | 1562 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1563 | |
3786063a | 1564 | if (!file_name) { |
de332ac4 DA |
1565 | pr_err("Failed to allocate memory for filename\n"); |
1566 | return -ENOMEM; | |
1567 | } | |
a1645ce1 ZY |
1568 | } |
1569 | ||
1570 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1571 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1572 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1573 | return __cmd_report(file_name, argc, argv); |
a1645ce1 ZY |
1574 | else if (!strncmp(argv[0], "diff", 4)) |
1575 | return cmd_diff(argc, argv, NULL); | |
1576 | else if (!strncmp(argv[0], "top", 3)) | |
1577 | return cmd_top(argc, argv, NULL); | |
1578 | else if (!strncmp(argv[0], "buildid-list", 12)) | |
3786063a | 1579 | return __cmd_buildid_list(file_name, argc, argv); |
da50ad69 | 1580 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 1581 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1582 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1583 | #endif |
a1645ce1 ZY |
1584 | else |
1585 | usage_with_options(kvm_usage, kvm_options); | |
1586 | ||
1587 | return 0; | |
1588 | } |