Commit | Line | Data |
---|---|---|
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" |
553873e1 | 16 | #include <api/fs/debugfs.h> |
bcf6edcd XG |
17 | #include "util/tool.h" |
18 | #include "util/stat.h" | |
1afe1d14 | 19 | #include "util/top.h" |
f5fc1412 | 20 | #include "util/data.h" |
d704ebda | 21 | #include "util/ordered-events.h" |
a1645ce1 ZY |
22 | |
23 | #include <sys/prctl.h> | |
87419c9a | 24 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 | 25 | #include <sys/timerfd.h> |
87419c9a | 26 | #endif |
a1645ce1 | 27 | |
1afe1d14 | 28 | #include <termios.h> |
a1645ce1 ZY |
29 | #include <semaphore.h> |
30 | #include <pthread.h> | |
31 | #include <math.h> | |
32 | ||
da50ad69 | 33 | #ifdef HAVE_KVM_STAT_SUPPORT |
44b38021 | 34 | #include <asm/kvm_perf.h> |
9daa8123 | 35 | #include "util/kvm-stat.h" |
bcf6edcd | 36 | |
9daa8123 AY |
37 | void exit_event_get_key(struct perf_evsel *evsel, |
38 | struct perf_sample *sample, | |
39 | struct event_key *key) | |
bcf6edcd XG |
40 | { |
41 | key->info = 0; | |
44b38021 | 42 | key->key = perf_evsel__intval(evsel, sample, KVM_EXIT_REASON); |
bcf6edcd XG |
43 | } |
44 | ||
9daa8123 | 45 | bool kvm_exit_event(struct perf_evsel *evsel) |
bcf6edcd | 46 | { |
44b38021 | 47 | return !strcmp(evsel->name, KVM_EXIT_TRACE); |
bcf6edcd XG |
48 | } |
49 | ||
9daa8123 AY |
50 | bool exit_event_begin(struct perf_evsel *evsel, |
51 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd | 52 | { |
14907e73 ACM |
53 | if (kvm_exit_event(evsel)) { |
54 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
55 | return true; |
56 | } | |
57 | ||
58 | return false; | |
59 | } | |
60 | ||
9daa8123 | 61 | bool kvm_entry_event(struct perf_evsel *evsel) |
bcf6edcd | 62 | { |
44b38021 | 63 | return !strcmp(evsel->name, KVM_ENTRY_TRACE); |
bcf6edcd XG |
64 | } |
65 | ||
9daa8123 AY |
66 | bool exit_event_end(struct perf_evsel *evsel, |
67 | struct perf_sample *sample __maybe_unused, | |
68 | struct event_key *key __maybe_unused) | |
bcf6edcd | 69 | { |
14907e73 | 70 | return kvm_entry_event(evsel); |
bcf6edcd XG |
71 | } |
72 | ||
df74c13b AY |
73 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, |
74 | struct exit_reasons_table *tbl, | |
75 | u64 exit_code) | |
bcf6edcd | 76 | { |
df74c13b | 77 | while (tbl->reason != NULL) { |
de332ac4 DA |
78 | if (tbl->exit_code == exit_code) |
79 | return tbl->reason; | |
80 | tbl++; | |
bcf6edcd XG |
81 | } |
82 | ||
83 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 84 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
85 | return "UNKNOWN"; |
86 | } | |
87 | ||
9daa8123 AY |
88 | void exit_event_decode_key(struct perf_kvm_stat *kvm, |
89 | struct event_key *key, | |
90 | char *decode) | |
bcf6edcd | 91 | { |
3be8e2a0 | 92 | const char *exit_reason = get_exit_reason(kvm, key->exit_reasons, |
df74c13b | 93 | key->key); |
bcf6edcd | 94 | |
44b38021 | 95 | scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason); |
bcf6edcd XG |
96 | } |
97 | ||
9daa8123 | 98 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd | 99 | { |
9daa8123 | 100 | struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops; |
bcf6edcd | 101 | |
9daa8123 AY |
102 | for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) { |
103 | if (!strcmp(events_ops->name, kvm->report_event)) { | |
104 | kvm->events_ops = events_ops->ops; | |
105 | return true; | |
106 | } | |
bcf6edcd XG |
107 | } |
108 | ||
109 | return false; | |
110 | } | |
111 | ||
bcf6edcd XG |
112 | struct vcpu_event_record { |
113 | int vcpu_id; | |
114 | u64 start_time; | |
115 | struct kvm_event *last_event; | |
116 | }; | |
117 | ||
bcf6edcd | 118 | |
3786063a | 119 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 120 | { |
b880deea | 121 | unsigned int i; |
bcf6edcd | 122 | |
b880deea | 123 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 124 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
125 | } |
126 | ||
87419c9a | 127 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
128 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
129 | { | |
130 | struct list_head *head; | |
131 | struct kvm_event *event; | |
132 | unsigned int i; | |
62d04dbf | 133 | int j; |
1afe1d14 DA |
134 | |
135 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
136 | head = &kvm_events_cache[i]; | |
137 | list_for_each_entry(event, head, hash_entry) { | |
138 | /* reset stats for event */ | |
62d04dbf DA |
139 | event->total.time = 0; |
140 | init_stats(&event->total.stats); | |
141 | ||
142 | for (j = 0; j < event->max_vcpu; ++j) { | |
143 | event->vcpu[j].time = 0; | |
144 | init_stats(&event->vcpu[j].stats); | |
145 | } | |
1afe1d14 DA |
146 | } |
147 | } | |
148 | } | |
87419c9a | 149 | #endif |
1afe1d14 | 150 | |
bcf6edcd XG |
151 | static int kvm_events_hash_fn(u64 key) |
152 | { | |
153 | return key & (EVENTS_CACHE_SIZE - 1); | |
154 | } | |
155 | ||
156 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
157 | { | |
158 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 159 | void *prev; |
bcf6edcd XG |
160 | |
161 | if (vcpu_id < event->max_vcpu) | |
162 | return true; | |
163 | ||
164 | while (event->max_vcpu <= vcpu_id) | |
165 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
166 | ||
6ca5f308 | 167 | prev = event->vcpu; |
bcf6edcd XG |
168 | event->vcpu = realloc(event->vcpu, |
169 | event->max_vcpu * sizeof(*event->vcpu)); | |
170 | if (!event->vcpu) { | |
6ca5f308 | 171 | free(prev); |
bcf6edcd XG |
172 | pr_err("Not enough memory\n"); |
173 | return false; | |
174 | } | |
175 | ||
176 | memset(event->vcpu + old_max_vcpu, 0, | |
177 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
178 | return true; | |
179 | } | |
180 | ||
181 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
182 | { | |
183 | struct kvm_event *event; | |
184 | ||
185 | event = zalloc(sizeof(*event)); | |
186 | if (!event) { | |
187 | pr_err("Not enough memory\n"); | |
188 | return NULL; | |
189 | } | |
190 | ||
191 | event->key = *key; | |
acb61fc8 | 192 | init_stats(&event->total.stats); |
bcf6edcd XG |
193 | return event; |
194 | } | |
195 | ||
3786063a | 196 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 197 | struct event_key *key) |
bcf6edcd XG |
198 | { |
199 | struct kvm_event *event; | |
200 | struct list_head *head; | |
201 | ||
202 | BUG_ON(key->key == INVALID_KEY); | |
203 | ||
de332ac4 | 204 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 205 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
206 | if (event->key.key == key->key && event->key.info == key->info) |
207 | return event; | |
355afe81 | 208 | } |
bcf6edcd XG |
209 | |
210 | event = kvm_alloc_init_event(key); | |
211 | if (!event) | |
212 | return NULL; | |
213 | ||
214 | list_add(&event->hash_entry, head); | |
215 | return event; | |
216 | } | |
217 | ||
3786063a | 218 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 219 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
220 | struct event_key *key, u64 timestamp) |
221 | { | |
222 | struct kvm_event *event = NULL; | |
223 | ||
224 | if (key->key != INVALID_KEY) | |
de332ac4 | 225 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
226 | |
227 | vcpu_record->last_event = event; | |
228 | vcpu_record->start_time = timestamp; | |
229 | return true; | |
230 | } | |
231 | ||
232 | static void | |
233 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
234 | { | |
235 | kvm_stats->time += time_diff; | |
236 | update_stats(&kvm_stats->stats, time_diff); | |
237 | } | |
238 | ||
239 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
240 | { | |
241 | struct kvm_event_stats *kvm_stats = &event->total; | |
242 | ||
243 | if (vcpu_id != -1) | |
244 | kvm_stats = &event->vcpu[vcpu_id]; | |
245 | ||
246 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
247 | avg_stats(&kvm_stats->stats)); | |
248 | } | |
249 | ||
250 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
251 | u64 time_diff) | |
252 | { | |
2aa8eab0 DA |
253 | if (vcpu_id == -1) { |
254 | kvm_update_event_stats(&event->total, time_diff); | |
255 | return true; | |
256 | } | |
bcf6edcd XG |
257 | |
258 | if (!kvm_event_expand(event, vcpu_id)) | |
259 | return false; | |
260 | ||
261 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
262 | return true; | |
263 | } | |
264 | ||
3be8e2a0 AY |
265 | static bool is_child_event(struct perf_kvm_stat *kvm, |
266 | struct perf_evsel *evsel, | |
267 | struct perf_sample *sample, | |
268 | struct event_key *key) | |
269 | { | |
270 | struct child_event_ops *child_ops; | |
271 | ||
272 | child_ops = kvm->events_ops->child_ops; | |
273 | ||
274 | if (!child_ops) | |
275 | return false; | |
276 | ||
277 | for (; child_ops->name; child_ops++) { | |
278 | if (!strcmp(evsel->name, child_ops->name)) { | |
279 | child_ops->get_key(evsel, sample, key); | |
280 | return true; | |
281 | } | |
282 | } | |
283 | ||
284 | return false; | |
285 | } | |
286 | ||
287 | static bool handle_child_event(struct perf_kvm_stat *kvm, | |
288 | struct vcpu_event_record *vcpu_record, | |
289 | struct event_key *key, | |
290 | struct perf_sample *sample __maybe_unused) | |
291 | { | |
292 | struct kvm_event *event = NULL; | |
293 | ||
294 | if (key->key != INVALID_KEY) | |
295 | event = find_create_kvm_event(kvm, key); | |
296 | ||
297 | vcpu_record->last_event = event; | |
298 | ||
299 | return true; | |
300 | } | |
301 | ||
54c801ff AY |
302 | static bool skip_event(const char *event) |
303 | { | |
304 | const char * const *skip_events; | |
305 | ||
306 | for (skip_events = kvm_skip_events; *skip_events; skip_events++) | |
307 | if (!strcmp(event, *skip_events)) | |
308 | return true; | |
309 | ||
310 | return false; | |
311 | } | |
312 | ||
3786063a | 313 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
314 | struct vcpu_event_record *vcpu_record, |
315 | struct event_key *key, | |
70f7b4a7 | 316 | struct perf_sample *sample) |
bcf6edcd XG |
317 | { |
318 | struct kvm_event *event; | |
319 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
320 | int vcpu; |
321 | ||
322 | if (kvm->trace_vcpu == -1) | |
323 | vcpu = -1; | |
324 | else | |
325 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
326 | |
327 | event = vcpu_record->last_event; | |
328 | time_begin = vcpu_record->start_time; | |
329 | ||
330 | /* The begin event is not caught. */ | |
331 | if (!time_begin) | |
332 | return true; | |
333 | ||
334 | /* | |
335 | * In some case, the 'begin event' only records the start timestamp, | |
336 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
337 | */ | |
338 | ||
339 | /* Both begin and end events did not get the key. */ | |
340 | if (!event && key->key == INVALID_KEY) | |
341 | return true; | |
342 | ||
343 | if (!event) | |
de332ac4 | 344 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
345 | |
346 | if (!event) | |
347 | return false; | |
348 | ||
349 | vcpu_record->last_event = NULL; | |
350 | vcpu_record->start_time = 0; | |
351 | ||
1afe1d14 | 352 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 353 | if (sample->time < time_begin) { |
1afe1d14 DA |
354 | pr_debug("End time before begin time; skipping event.\n"); |
355 | return true; | |
356 | } | |
bcf6edcd | 357 | |
70f7b4a7 DA |
358 | time_diff = sample->time - time_begin; |
359 | ||
360 | if (kvm->duration && time_diff > kvm->duration) { | |
44b38021 | 361 | char decode[DECODE_STR_LEN]; |
70f7b4a7 DA |
362 | |
363 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
54c801ff | 364 | if (!skip_event(decode)) { |
70f7b4a7 DA |
365 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", |
366 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
367 | decode, time_diff/1000); | |
368 | } | |
369 | } | |
370 | ||
2aa8eab0 | 371 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
372 | } |
373 | ||
14907e73 ACM |
374 | static |
375 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
376 | struct perf_evsel *evsel, | |
377 | struct perf_sample *sample) | |
bcf6edcd XG |
378 | { |
379 | /* Only kvm_entry records vcpu id. */ | |
69e865c3 | 380 | if (!thread__priv(thread) && kvm_entry_event(evsel)) { |
bcf6edcd XG |
381 | struct vcpu_event_record *vcpu_record; |
382 | ||
14907e73 | 383 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 384 | if (!vcpu_record) { |
14907e73 | 385 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
386 | return NULL; |
387 | } | |
388 | ||
44b38021 | 389 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, VCPU_ID); |
69e865c3 | 390 | thread__set_priv(thread, vcpu_record); |
bcf6edcd XG |
391 | } |
392 | ||
69e865c3 | 393 | return thread__priv(thread); |
bcf6edcd XG |
394 | } |
395 | ||
3786063a | 396 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
397 | struct thread *thread, |
398 | struct perf_evsel *evsel, | |
14907e73 | 399 | struct perf_sample *sample) |
bcf6edcd XG |
400 | { |
401 | struct vcpu_event_record *vcpu_record; | |
3be8e2a0 AY |
402 | struct event_key key = { .key = INVALID_KEY, |
403 | .exit_reasons = kvm->exit_reasons }; | |
bcf6edcd | 404 | |
14907e73 | 405 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
406 | if (!vcpu_record) |
407 | return true; | |
408 | ||
2aa8eab0 DA |
409 | /* only process events for vcpus user cares about */ |
410 | if ((kvm->trace_vcpu != -1) && | |
411 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
412 | return true; | |
413 | ||
de332ac4 DA |
414 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
415 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 416 | |
3be8e2a0 AY |
417 | if (is_child_event(kvm, evsel, sample, &key)) |
418 | return handle_child_event(kvm, vcpu_record, &key, sample); | |
419 | ||
de332ac4 | 420 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 421 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
422 | |
423 | return true; | |
424 | } | |
425 | ||
bcf6edcd XG |
426 | #define GET_EVENT_KEY(func, field) \ |
427 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
428 | { \ | |
429 | if (vcpu == -1) \ | |
430 | return event->total.field; \ | |
431 | \ | |
432 | if (vcpu >= event->max_vcpu) \ | |
433 | return 0; \ | |
434 | \ | |
435 | return event->vcpu[vcpu].field; \ | |
436 | } | |
437 | ||
438 | #define COMPARE_EVENT_KEY(func, field) \ | |
439 | GET_EVENT_KEY(func, field) \ | |
440 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
441 | struct kvm_event *two, int vcpu)\ | |
442 | { \ | |
443 | return get_event_ ##func(one, vcpu) > \ | |
444 | get_event_ ##func(two, vcpu); \ | |
445 | } | |
446 | ||
447 | GET_EVENT_KEY(time, time); | |
448 | COMPARE_EVENT_KEY(count, stats.n); | |
449 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
450 | GET_EVENT_KEY(max, stats.max); |
451 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
452 | |
453 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
454 | { #name, compare_kvm_event_ ## compare_key } | |
455 | ||
456 | static struct kvm_event_key keys[] = { | |
457 | DEF_SORT_NAME_KEY(sample, count), | |
458 | DEF_SORT_NAME_KEY(time, mean), | |
459 | { NULL, NULL } | |
460 | }; | |
461 | ||
3786063a | 462 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
463 | { |
464 | int i; | |
465 | ||
466 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
467 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
468 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
469 | return true; |
470 | } | |
471 | } | |
472 | ||
de332ac4 | 473 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
474 | return false; |
475 | } | |
476 | ||
de332ac4 DA |
477 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
478 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 479 | { |
de332ac4 | 480 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
481 | struct rb_node *parent = NULL; |
482 | struct kvm_event *p; | |
483 | ||
484 | while (*rb) { | |
485 | p = container_of(*rb, struct kvm_event, rb); | |
486 | parent = *rb; | |
487 | ||
488 | if (bigger(event, p, vcpu)) | |
489 | rb = &(*rb)->rb_left; | |
490 | else | |
491 | rb = &(*rb)->rb_right; | |
492 | } | |
493 | ||
494 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 495 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
496 | } |
497 | ||
3786063a XG |
498 | static void |
499 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 500 | { |
de332ac4 DA |
501 | int vcpu = kvm->trace_vcpu; |
502 | ||
503 | kvm->total_count += get_event_count(event, vcpu); | |
504 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
505 | } |
506 | ||
507 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
508 | { | |
509 | return !!get_event_count(event, vcpu); | |
510 | } | |
511 | ||
3786063a | 512 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
513 | { |
514 | unsigned int i; | |
de332ac4 | 515 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
516 | struct kvm_event *event; |
517 | ||
355afe81 DA |
518 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
519 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 520 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
521 | update_total_count(kvm, event); |
522 | insert_to_result(&kvm->result, event, | |
523 | kvm->compare, vcpu); | |
bcf6edcd | 524 | } |
355afe81 DA |
525 | } |
526 | } | |
bcf6edcd XG |
527 | } |
528 | ||
529 | /* returns left most element of result, and erase it */ | |
de332ac4 | 530 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 531 | { |
de332ac4 | 532 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
533 | |
534 | if (!node) | |
535 | return NULL; | |
536 | ||
de332ac4 | 537 | rb_erase(node, result); |
bcf6edcd XG |
538 | return container_of(node, struct kvm_event, rb); |
539 | } | |
540 | ||
1afe1d14 | 541 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 542 | { |
1afe1d14 DA |
543 | int vcpu = kvm->trace_vcpu; |
544 | ||
bcf6edcd XG |
545 | pr_info("Analyze events for "); |
546 | ||
1f3e5b55 AY |
547 | if (kvm->opts.target.system_wide) |
548 | pr_info("all VMs, "); | |
549 | else if (kvm->opts.target.pid) | |
550 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
551 | else | |
552 | pr_info("dazed and confused on what is monitored, "); | |
1afe1d14 | 553 | |
bcf6edcd XG |
554 | if (vcpu == -1) |
555 | pr_info("all VCPUs:\n\n"); | |
556 | else | |
557 | pr_info("VCPU %d:\n\n", vcpu); | |
558 | } | |
559 | ||
1afe1d14 DA |
560 | static void show_timeofday(void) |
561 | { | |
562 | char date[64]; | |
563 | struct timeval tv; | |
564 | struct tm ltime; | |
565 | ||
566 | gettimeofday(&tv, NULL); | |
567 | if (localtime_r(&tv.tv_sec, <ime)) { | |
568 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
569 | pr_info("%s.%06ld", date, tv.tv_usec); | |
570 | } else | |
571 | pr_info("00:00:00.000000"); | |
572 | ||
573 | return; | |
574 | } | |
575 | ||
3786063a | 576 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd | 577 | { |
44b38021 | 578 | char decode[DECODE_STR_LEN]; |
bcf6edcd | 579 | struct kvm_event *event; |
de332ac4 | 580 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 581 | |
1afe1d14 DA |
582 | if (kvm->live) { |
583 | puts(CONSOLE_CLEAR); | |
584 | show_timeofday(); | |
585 | } | |
586 | ||
bcf6edcd | 587 | pr_info("\n\n"); |
1afe1d14 | 588 | print_vcpu_info(kvm); |
44b38021 | 589 | pr_info("%*s ", DECODE_STR_LEN, kvm->events_ops->name); |
bcf6edcd XG |
590 | pr_info("%10s ", "Samples"); |
591 | pr_info("%9s ", "Samples%"); | |
592 | ||
593 | pr_info("%9s ", "Time%"); | |
b048a24c CB |
594 | pr_info("%11s ", "Min Time"); |
595 | pr_info("%11s ", "Max Time"); | |
bcf6edcd XG |
596 | pr_info("%16s ", "Avg time"); |
597 | pr_info("\n\n"); | |
598 | ||
de332ac4 | 599 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 600 | u64 ecount, etime, max, min; |
bcf6edcd XG |
601 | |
602 | ecount = get_event_count(event, vcpu); | |
603 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
604 | max = get_event_max(event, vcpu); |
605 | min = get_event_min(event, vcpu); | |
bcf6edcd | 606 | |
de332ac4 | 607 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
44b38021 | 608 | pr_info("%*s ", DECODE_STR_LEN, decode); |
bcf6edcd | 609 | pr_info("%10llu ", (unsigned long long)ecount); |
de332ac4 DA |
610 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
611 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
b048a24c CB |
612 | pr_info("%9.2fus ", (double)min / 1e3); |
613 | pr_info("%9.2fus ", (double)max / 1e3); | |
bcf6edcd XG |
614 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, |
615 | kvm_event_rel_stddev(vcpu, event)); | |
616 | pr_info("\n"); | |
617 | } | |
618 | ||
e4f7637f DA |
619 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
620 | kvm->total_count, kvm->total_time / 1e3); | |
1afe1d14 DA |
621 | |
622 | if (kvm->lost_events) | |
623 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
624 | } | |
625 | ||
87419c9a | 626 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
627 | static int process_lost_event(struct perf_tool *tool, |
628 | union perf_event *event __maybe_unused, | |
629 | struct perf_sample *sample __maybe_unused, | |
630 | struct machine *machine __maybe_unused) | |
631 | { | |
632 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
633 | ||
634 | kvm->lost_events++; | |
635 | return 0; | |
bcf6edcd | 636 | } |
87419c9a | 637 | #endif |
bcf6edcd | 638 | |
2e73f00f DA |
639 | static bool skip_sample(struct perf_kvm_stat *kvm, |
640 | struct perf_sample *sample) | |
641 | { | |
642 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
643 | return true; | |
644 | ||
645 | return false; | |
646 | } | |
647 | ||
de332ac4 | 648 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
649 | union perf_event *event, |
650 | struct perf_sample *sample, | |
651 | struct perf_evsel *evsel, | |
652 | struct machine *machine) | |
653 | { | |
b91fc39f | 654 | int err = 0; |
2e73f00f | 655 | struct thread *thread; |
3786063a XG |
656 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
657 | tool); | |
bcf6edcd | 658 | |
2e73f00f DA |
659 | if (skip_sample(kvm, sample)) |
660 | return 0; | |
661 | ||
314add6b | 662 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
663 | if (thread == NULL) { |
664 | pr_debug("problem processing %d event, skipping it.\n", | |
665 | event->header.type); | |
666 | return -1; | |
667 | } | |
668 | ||
de332ac4 | 669 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
b91fc39f | 670 | err = -1; |
bcf6edcd | 671 | |
b91fc39f ACM |
672 | thread__put(thread); |
673 | return err; | |
bcf6edcd XG |
674 | } |
675 | ||
1afe1d14 | 676 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 677 | { |
1afe1d14 | 678 | char buf[64], *cpuid; |
65c647a6 | 679 | int err; |
1afe1d14 DA |
680 | |
681 | if (kvm->live) { | |
682 | err = get_cpuid(buf, sizeof(buf)); | |
683 | if (err != 0) { | |
65c647a6 | 684 | pr_err("Failed to look up CPU type\n"); |
1afe1d14 DA |
685 | return err; |
686 | } | |
687 | cpuid = buf; | |
688 | } else | |
689 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 690 | |
65c647a6 AY |
691 | if (!cpuid) { |
692 | pr_err("Failed to look up CPU type\n"); | |
693 | return -EINVAL; | |
1afe1d14 DA |
694 | } |
695 | ||
65c647a6 AY |
696 | err = cpu_isa_init(kvm, cpuid); |
697 | if (err == -ENOTSUP) | |
698 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 | 699 | |
65c647a6 | 700 | return err; |
1afe1d14 DA |
701 | } |
702 | ||
703 | static bool verify_vcpu(int vcpu) | |
704 | { | |
705 | if (vcpu != -1 && vcpu < 0) { | |
706 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
707 | return false; | |
708 | } | |
709 | ||
710 | return true; | |
711 | } | |
712 | ||
87419c9a | 713 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
714 | /* keeping the max events to a modest level to keep |
715 | * the processing of samples per mmap smooth. | |
716 | */ | |
717 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
718 | ||
719 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
720 | u64 *mmap_time) | |
721 | { | |
722 | union perf_event *event; | |
723 | struct perf_sample sample; | |
724 | s64 n = 0; | |
725 | int err; | |
726 | ||
727 | *mmap_time = ULLONG_MAX; | |
728 | while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { | |
729 | err = perf_evlist__parse_sample(kvm->evlist, event, &sample); | |
730 | if (err) { | |
8e50d384 | 731 | perf_evlist__mmap_consume(kvm->evlist, idx); |
1afe1d14 DA |
732 | pr_err("Failed to parse sample\n"); |
733 | return -1; | |
734 | } | |
735 | ||
b7b61cbe | 736 | err = perf_session__queue_event(kvm->session, event, &sample, 0); |
8e50d384 | 737 | /* |
b7b61cbe | 738 | * FIXME: Here we can't consume the event, as perf_session__queue_event will |
8e50d384 ZZ |
739 | * point to it, and it'll get possibly overwritten by the kernel. |
740 | */ | |
741 | perf_evlist__mmap_consume(kvm->evlist, idx); | |
742 | ||
1afe1d14 DA |
743 | if (err) { |
744 | pr_err("Failed to enqueue sample: %d\n", err); | |
745 | return -1; | |
746 | } | |
747 | ||
748 | /* save time stamp of our first sample for this mmap */ | |
749 | if (n == 0) | |
750 | *mmap_time = sample.time; | |
751 | ||
752 | /* limit events per mmap handled all at once */ | |
753 | n++; | |
754 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
755 | break; | |
756 | } | |
757 | ||
758 | return n; | |
759 | } | |
760 | ||
761 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
762 | { | |
763 | int i, err, throttled = 0; | |
764 | s64 n, ntotal = 0; | |
765 | u64 flush_time = ULLONG_MAX, mmap_time; | |
766 | ||
767 | for (i = 0; i < kvm->evlist->nr_mmaps; i++) { | |
768 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); | |
769 | if (n < 0) | |
770 | return -1; | |
771 | ||
772 | /* flush time is going to be the minimum of all the individual | |
773 | * mmap times. Essentially, we flush all the samples queued up | |
774 | * from the last pass under our minimal start time -- that leaves | |
775 | * a very small race for samples to come in with a lower timestamp. | |
776 | * The ioctl to return the perf_clock timestamp should close the | |
777 | * race entirely. | |
778 | */ | |
779 | if (mmap_time < flush_time) | |
780 | flush_time = mmap_time; | |
781 | ||
782 | ntotal += n; | |
783 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
784 | throttled = 1; | |
785 | } | |
786 | ||
787 | /* flush queue after each round in which we processed events */ | |
788 | if (ntotal) { | |
d704ebda ACM |
789 | struct ordered_events *oe = &kvm->session->ordered_events; |
790 | ||
791 | oe->next_flush = flush_time; | |
792 | err = ordered_events__flush(oe, OE_FLUSH__ROUND); | |
1afe1d14 DA |
793 | if (err) { |
794 | if (kvm->lost_events) | |
795 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
796 | kvm->lost_events); | |
797 | return err; | |
798 | } | |
799 | } | |
800 | ||
801 | return throttled; | |
802 | } | |
803 | ||
804 | static volatile int done; | |
805 | ||
806 | static void sig_handler(int sig __maybe_unused) | |
807 | { | |
808 | done = 1; | |
809 | } | |
810 | ||
811 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
812 | { | |
813 | struct itimerspec new_value; | |
814 | int rc = -1; | |
815 | ||
816 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
817 | if (kvm->timerfd < 0) { | |
818 | pr_err("timerfd_create failed\n"); | |
819 | goto out; | |
820 | } | |
821 | ||
822 | new_value.it_value.tv_sec = kvm->display_time; | |
823 | new_value.it_value.tv_nsec = 0; | |
824 | new_value.it_interval.tv_sec = kvm->display_time; | |
825 | new_value.it_interval.tv_nsec = 0; | |
826 | ||
827 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
828 | pr_err("timerfd_settime failed: %d\n", errno); | |
829 | close(kvm->timerfd); | |
830 | goto out; | |
831 | } | |
832 | ||
833 | rc = 0; | |
834 | out: | |
835 | return rc; | |
836 | } | |
837 | ||
838 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
839 | { | |
840 | uint64_t c; | |
841 | int rc; | |
842 | ||
843 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
844 | if (rc < 0) { | |
845 | if (errno == EAGAIN) | |
846 | return 0; | |
847 | ||
848 | pr_err("Failed to read timer fd: %d\n", errno); | |
849 | return -1; | |
850 | } | |
851 | ||
852 | if (rc != sizeof(uint64_t)) { | |
853 | pr_err("Error reading timer fd - invalid size returned\n"); | |
854 | return -1; | |
855 | } | |
856 | ||
857 | if (c != 1) | |
858 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
859 | ||
860 | /* update display */ | |
861 | sort_result(kvm); | |
862 | print_result(kvm); | |
863 | ||
864 | /* reset counts */ | |
865 | clear_events_cache_stats(kvm->kvm_events_cache); | |
866 | kvm->total_count = 0; | |
867 | kvm->total_time = 0; | |
868 | kvm->lost_events = 0; | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | static int fd_set_nonblock(int fd) | |
874 | { | |
875 | long arg = 0; | |
876 | ||
877 | arg = fcntl(fd, F_GETFL); | |
878 | if (arg < 0) { | |
879 | pr_err("Failed to get current flags for fd %d\n", fd); | |
880 | return -1; | |
881 | } | |
882 | ||
883 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
884 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
885 | return -1; | |
886 | } | |
887 | ||
888 | return 0; | |
889 | } | |
890 | ||
d5b4130a | 891 | static int perf_kvm__handle_stdin(void) |
1afe1d14 DA |
892 | { |
893 | int c; | |
894 | ||
1afe1d14 | 895 | c = getc(stdin); |
1afe1d14 DA |
896 | if (c == 'q') |
897 | return 1; | |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
902 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
903 | { | |
1ca72260 | 904 | int nr_stdin, ret, err = -EINVAL; |
d5b4130a | 905 | struct termios save; |
1afe1d14 DA |
906 | |
907 | /* live flag must be set first */ | |
908 | kvm->live = true; | |
909 | ||
910 | ret = cpu_isa_config(kvm); | |
911 | if (ret < 0) | |
912 | return ret; | |
913 | ||
914 | if (!verify_vcpu(kvm->trace_vcpu) || | |
915 | !select_key(kvm) || | |
916 | !register_kvm_events_ops(kvm)) { | |
917 | goto out; | |
918 | } | |
919 | ||
d5b4130a | 920 | set_term_quiet_input(&save); |
1afe1d14 DA |
921 | init_kvm_event_record(kvm); |
922 | ||
1afe1d14 DA |
923 | signal(SIGINT, sig_handler); |
924 | signal(SIGTERM, sig_handler); | |
925 | ||
1afe1d14 DA |
926 | /* add timer fd */ |
927 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
928 | err = -1; | |
929 | goto out; | |
930 | } | |
931 | ||
fe636add | 932 | if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) |
0a04c9e0 ACM |
933 | goto out; |
934 | ||
0cae013c JO |
935 | nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin)); |
936 | if (nr_stdin < 0) | |
0a04c9e0 ACM |
937 | goto out; |
938 | ||
1afe1d14 DA |
939 | if (fd_set_nonblock(fileno(stdin)) != 0) |
940 | goto out; | |
941 | ||
942 | /* everything is good - enable the events and process */ | |
943 | perf_evlist__enable(kvm->evlist); | |
944 | ||
945 | while (!done) { | |
1ca72260 | 946 | struct fdarray *fda = &kvm->evlist->pollfd; |
1afe1d14 DA |
947 | int rc; |
948 | ||
949 | rc = perf_kvm__mmap_read(kvm); | |
950 | if (rc < 0) | |
951 | break; | |
952 | ||
953 | err = perf_kvm__handle_timerfd(kvm); | |
954 | if (err) | |
955 | goto out; | |
956 | ||
1ca72260 | 957 | if (fda->entries[nr_stdin].revents & POLLIN) |
d5b4130a | 958 | done = perf_kvm__handle_stdin(); |
1afe1d14 DA |
959 | |
960 | if (!rc && !done) | |
1ca72260 | 961 | err = fdarray__poll(fda, 100); |
1afe1d14 DA |
962 | } |
963 | ||
964 | perf_evlist__disable(kvm->evlist); | |
965 | ||
966 | if (err == 0) { | |
967 | sort_result(kvm); | |
968 | print_result(kvm); | |
969 | } | |
970 | ||
971 | out: | |
972 | if (kvm->timerfd >= 0) | |
973 | close(kvm->timerfd); | |
974 | ||
d5b4130a | 975 | tcsetattr(0, TCSAFLUSH, &save); |
1afe1d14 DA |
976 | return err; |
977 | } | |
978 | ||
979 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
980 | { | |
981 | int err, rc = -1; | |
982 | struct perf_evsel *pos; | |
983 | struct perf_evlist *evlist = kvm->evlist; | |
f9f33fdb | 984 | char sbuf[STRERR_BUFSIZE]; |
1afe1d14 DA |
985 | |
986 | perf_evlist__config(evlist, &kvm->opts); | |
987 | ||
988 | /* | |
989 | * Note: exclude_{guest,host} do not apply here. | |
990 | * This command processes KVM tracepoints from host only | |
991 | */ | |
0050f7aa | 992 | evlist__for_each(evlist, pos) { |
1afe1d14 DA |
993 | struct perf_event_attr *attr = &pos->attr; |
994 | ||
995 | /* make sure these *are* set */ | |
e71aa283 AH |
996 | perf_evsel__set_sample_bit(pos, TID); |
997 | perf_evsel__set_sample_bit(pos, TIME); | |
998 | perf_evsel__set_sample_bit(pos, CPU); | |
999 | perf_evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 1000 | /* make sure these are *not*; want as small a sample as possible */ |
e71aa283 AH |
1001 | perf_evsel__reset_sample_bit(pos, PERIOD); |
1002 | perf_evsel__reset_sample_bit(pos, IP); | |
1003 | perf_evsel__reset_sample_bit(pos, CALLCHAIN); | |
1004 | perf_evsel__reset_sample_bit(pos, ADDR); | |
1005 | perf_evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1006 | attr->mmap = 0; |
1007 | attr->comm = 0; | |
1008 | attr->task = 0; | |
1009 | ||
1010 | attr->sample_period = 1; | |
1011 | ||
1012 | attr->watermark = 0; | |
1013 | attr->wakeup_events = 1000; | |
1014 | ||
1015 | /* will enable all once we are ready */ | |
1016 | attr->disabled = 1; | |
1017 | } | |
1018 | ||
1019 | err = perf_evlist__open(evlist); | |
1020 | if (err < 0) { | |
f9f33fdb MH |
1021 | printf("Couldn't create the events: %s\n", |
1022 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
1afe1d14 | 1023 | goto out; |
bcf6edcd XG |
1024 | } |
1025 | ||
1afe1d14 | 1026 | if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { |
f9f33fdb MH |
1027 | ui__error("Failed to mmap the events: %s\n", |
1028 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
1afe1d14 DA |
1029 | perf_evlist__close(evlist); |
1030 | goto out; | |
1031 | } | |
1032 | ||
1033 | rc = 0; | |
1034 | ||
1035 | out: | |
1036 | return rc; | |
bcf6edcd | 1037 | } |
87419c9a | 1038 | #endif |
bcf6edcd | 1039 | |
3786063a | 1040 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1041 | { |
bcf6edcd XG |
1042 | int ret; |
1043 | ||
de332ac4 DA |
1044 | struct perf_tool eops = { |
1045 | .sample = process_sample_event, | |
1046 | .comm = perf_event__process_comm, | |
0a8cb85c | 1047 | .ordered_events = true, |
de332ac4 | 1048 | }; |
f5fc1412 | 1049 | struct perf_data_file file = { |
476b3a86 | 1050 | .path = kvm->file_name, |
f5fc1412 | 1051 | .mode = PERF_DATA_MODE_READ, |
8cc5ec1f | 1052 | .force = kvm->force, |
f5fc1412 | 1053 | }; |
de332ac4 DA |
1054 | |
1055 | kvm->tool = eops; | |
f5fc1412 | 1056 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
de332ac4 | 1057 | if (!kvm->session) { |
bcf6edcd | 1058 | pr_err("Initializing perf session failed\n"); |
52e02834 | 1059 | return -1; |
bcf6edcd XG |
1060 | } |
1061 | ||
0a7e6d1b | 1062 | symbol__init(&kvm->session->header.env); |
14d37f38 | 1063 | |
41b98360 TS |
1064 | if (!perf_session__has_traces(kvm->session, "kvm record")) { |
1065 | ret = -EINVAL; | |
1066 | goto out_delete; | |
1067 | } | |
bcf6edcd XG |
1068 | |
1069 | /* | |
1070 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1071 | * traced in the old kernel. | |
1072 | */ | |
1afe1d14 | 1073 | ret = cpu_isa_config(kvm); |
bcf6edcd | 1074 | if (ret < 0) |
41b98360 TS |
1075 | goto out_delete; |
1076 | ||
1077 | ret = perf_session__process_events(kvm->session); | |
bcf6edcd | 1078 | |
41b98360 TS |
1079 | out_delete: |
1080 | perf_session__delete(kvm->session); | |
1081 | return ret; | |
bcf6edcd XG |
1082 | } |
1083 | ||
2e73f00f DA |
1084 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1085 | { | |
3ae4a76a AY |
1086 | if (kvm->opts.target.pid) { |
1087 | kvm->pid_list = intlist__new(kvm->opts.target.pid); | |
2e73f00f DA |
1088 | if (kvm->pid_list == NULL) { |
1089 | pr_err("Error parsing process id string\n"); | |
1090 | return -EINVAL; | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
3786063a | 1097 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1098 | { |
1099 | int ret = -EINVAL; | |
de332ac4 | 1100 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1101 | |
2e73f00f DA |
1102 | if (parse_target_str(kvm) != 0) |
1103 | goto exit; | |
1104 | ||
bcf6edcd XG |
1105 | if (!verify_vcpu(vcpu)) |
1106 | goto exit; | |
1107 | ||
de332ac4 | 1108 | if (!select_key(kvm)) |
bcf6edcd XG |
1109 | goto exit; |
1110 | ||
de332ac4 | 1111 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1112 | goto exit; |
1113 | ||
de332ac4 | 1114 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1115 | setup_pager(); |
1116 | ||
de332ac4 | 1117 | ret = read_events(kvm); |
bcf6edcd XG |
1118 | if (ret) |
1119 | goto exit; | |
1120 | ||
de332ac4 DA |
1121 | sort_result(kvm); |
1122 | print_result(kvm); | |
1123 | ||
bcf6edcd XG |
1124 | exit: |
1125 | return ret; | |
1126 | } | |
1127 | ||
bcf6edcd XG |
1128 | #define STRDUP_FAIL_EXIT(s) \ |
1129 | ({ char *_p; \ | |
1130 | _p = strdup(s); \ | |
1131 | if (!_p) \ | |
1132 | return -ENOMEM; \ | |
1133 | _p; \ | |
1134 | }) | |
1135 | ||
3786063a XG |
1136 | static int |
1137 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd | 1138 | { |
9daa8123 | 1139 | unsigned int rec_argc, i, j, events_tp_size; |
bcf6edcd | 1140 | const char **rec_argv; |
8fdd84c4 DA |
1141 | const char * const record_args[] = { |
1142 | "record", | |
1143 | "-R", | |
8fdd84c4 DA |
1144 | "-m", "1024", |
1145 | "-c", "1", | |
1146 | }; | |
f45d20ff NK |
1147 | const char * const kvm_stat_record_usage[] = { |
1148 | "perf kvm stat record [<options>]", | |
1149 | NULL | |
1150 | }; | |
9daa8123 AY |
1151 | const char * const *events_tp; |
1152 | events_tp_size = 0; | |
1153 | ||
1154 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) | |
1155 | events_tp_size++; | |
bcf6edcd | 1156 | |
8fdd84c4 | 1157 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
9daa8123 | 1158 | 2 * events_tp_size; |
bcf6edcd XG |
1159 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1160 | ||
1161 | if (rec_argv == NULL) | |
1162 | return -ENOMEM; | |
1163 | ||
1164 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1165 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1166 | ||
9daa8123 | 1167 | for (j = 0; j < events_tp_size; j++) { |
8fdd84c4 DA |
1168 | rec_argv[i++] = "-e"; |
1169 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1170 | } | |
1171 | ||
bcf6edcd | 1172 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1173 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1174 | |
1175 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1176 | rec_argv[i] = argv[j]; | |
1177 | ||
f45d20ff NK |
1178 | set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); |
1179 | set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); | |
1180 | set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); | |
1181 | ||
1182 | set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); | |
1183 | set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); | |
1184 | set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); | |
1185 | set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); | |
1186 | set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); | |
1187 | set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); | |
1188 | set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); | |
1189 | set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); | |
1190 | set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); | |
1191 | set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); | |
1192 | set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); | |
1193 | set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); | |
1194 | set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); | |
1195 | set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); | |
1196 | set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); | |
1197 | ||
1198 | record_usage = kvm_stat_record_usage; | |
bcf6edcd XG |
1199 | return cmd_record(i, rec_argv, NULL); |
1200 | } | |
1201 | ||
3786063a XG |
1202 | static int |
1203 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1204 | { |
1205 | const struct option kvm_events_report_options[] = { | |
1206 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
3be8e2a0 AY |
1207 | "event for reporting: vmexit, " |
1208 | "mmio (x86 only), ioport (x86 only)"), | |
de332ac4 DA |
1209 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1210 | "vcpu id to report"), | |
1211 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1212 | "key for sorting: sample(sort by samples number)" | |
1213 | " time (sort by avg time)"), | |
3ae4a76a | 1214 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", |
2e73f00f | 1215 | "analyze events only for given process id(s)"), |
8cc5ec1f | 1216 | OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), |
de332ac4 DA |
1217 | OPT_END() |
1218 | }; | |
bcf6edcd | 1219 | |
de332ac4 DA |
1220 | const char * const kvm_events_report_usage[] = { |
1221 | "perf kvm stat report [<options>]", | |
1222 | NULL | |
1223 | }; | |
bcf6edcd | 1224 | |
bcf6edcd XG |
1225 | if (argc) { |
1226 | argc = parse_options(argc, argv, | |
1227 | kvm_events_report_options, | |
1228 | kvm_events_report_usage, 0); | |
1229 | if (argc) | |
1230 | usage_with_options(kvm_events_report_usage, | |
1231 | kvm_events_report_options); | |
1232 | } | |
1233 | ||
f181957c AY |
1234 | if (!kvm->opts.target.pid) |
1235 | kvm->opts.target.system_wide = true; | |
1236 | ||
de332ac4 | 1237 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1238 | } |
1239 | ||
87419c9a | 1240 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1241 | static struct perf_evlist *kvm_live_event_list(void) |
1242 | { | |
1243 | struct perf_evlist *evlist; | |
1244 | char *tp, *name, *sys; | |
1afe1d14 | 1245 | int err = -1; |
9daa8123 | 1246 | const char * const *events_tp; |
1afe1d14 DA |
1247 | |
1248 | evlist = perf_evlist__new(); | |
1249 | if (evlist == NULL) | |
1250 | return NULL; | |
1251 | ||
9daa8123 | 1252 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) { |
1afe1d14 | 1253 | |
9daa8123 | 1254 | tp = strdup(*events_tp); |
1afe1d14 DA |
1255 | if (tp == NULL) |
1256 | goto out; | |
1257 | ||
1258 | /* split tracepoint into subsystem and name */ | |
1259 | sys = tp; | |
1260 | name = strchr(tp, ':'); | |
1261 | if (name == NULL) { | |
1262 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
9daa8123 | 1263 | *events_tp); |
1afe1d14 DA |
1264 | free(tp); |
1265 | goto out; | |
1266 | } | |
1267 | *name = '\0'; | |
1268 | name++; | |
1269 | ||
1270 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
9daa8123 | 1271 | pr_err("Failed to add %s tracepoint to the list\n", *events_tp); |
1afe1d14 DA |
1272 | free(tp); |
1273 | goto out; | |
1274 | } | |
1275 | ||
1276 | free(tp); | |
1277 | } | |
1278 | ||
1279 | err = 0; | |
1280 | ||
1281 | out: | |
1282 | if (err) { | |
1283 | perf_evlist__delete(evlist); | |
1284 | evlist = NULL; | |
1285 | } | |
1286 | ||
1287 | return evlist; | |
1288 | } | |
1289 | ||
1290 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1291 | int argc, const char **argv) | |
1292 | { | |
1293 | char errbuf[BUFSIZ]; | |
1294 | int err; | |
1295 | ||
1296 | const struct option live_options[] = { | |
1297 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1298 | "record events on existing process id"), | |
994a1f78 JO |
1299 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
1300 | "number of mmap data pages", | |
1301 | perf_evlist__parse_mmap_pages), | |
1afe1d14 DA |
1302 | OPT_INCR('v', "verbose", &verbose, |
1303 | "be more verbose (show counter open errors, etc)"), | |
1304 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1305 | "system-wide collection from all CPUs"), | |
1306 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1307 | "time in seconds between display updates"), | |
1308 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
99d348a8 AY |
1309 | "event for reporting: " |
1310 | "vmexit, mmio (x86 only), ioport (x86 only)"), | |
1afe1d14 DA |
1311 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1312 | "vcpu id to report"), | |
1313 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1314 | "key for sorting: sample(sort by samples number)" | |
1315 | " time (sort by avg time)"), | |
70f7b4a7 | 1316 | OPT_U64(0, "duration", &kvm->duration, |
3be8e2a0 AY |
1317 | "show events other than" |
1318 | " HLT (x86 only) or Wait state (s390 only)" | |
1319 | " that take longer than duration usecs"), | |
9d9cad76 KL |
1320 | OPT_UINTEGER(0, "proc-map-timeout", &kvm->opts.proc_map_timeout, |
1321 | "per thread proc mmap processing timeout in ms"), | |
1afe1d14 DA |
1322 | OPT_END() |
1323 | }; | |
1324 | const char * const live_usage[] = { | |
1325 | "perf kvm stat live [<options>]", | |
1326 | NULL | |
1327 | }; | |
f5fc1412 JO |
1328 | struct perf_data_file file = { |
1329 | .mode = PERF_DATA_MODE_WRITE, | |
1330 | }; | |
1afe1d14 DA |
1331 | |
1332 | ||
1333 | /* event handling */ | |
1334 | kvm->tool.sample = process_sample_event; | |
1335 | kvm->tool.comm = perf_event__process_comm; | |
1336 | kvm->tool.exit = perf_event__process_exit; | |
1337 | kvm->tool.fork = perf_event__process_fork; | |
1338 | kvm->tool.lost = process_lost_event; | |
0a8cb85c | 1339 | kvm->tool.ordered_events = true; |
1afe1d14 DA |
1340 | perf_tool__fill_defaults(&kvm->tool); |
1341 | ||
1342 | /* set defaults */ | |
1343 | kvm->display_time = 1; | |
1344 | kvm->opts.user_interval = 1; | |
1345 | kvm->opts.mmap_pages = 512; | |
1346 | kvm->opts.target.uses_mmap = false; | |
1347 | kvm->opts.target.uid_str = NULL; | |
1348 | kvm->opts.target.uid = UINT_MAX; | |
9d9cad76 | 1349 | kvm->opts.proc_map_timeout = 500; |
1afe1d14 | 1350 | |
0a7e6d1b | 1351 | symbol__init(NULL); |
1afe1d14 DA |
1352 | disable_buildid_cache(); |
1353 | ||
1354 | use_browser = 0; | |
1355 | setup_browser(false); | |
1356 | ||
1357 | if (argc) { | |
1358 | argc = parse_options(argc, argv, live_options, | |
1359 | live_usage, 0); | |
1360 | if (argc) | |
1361 | usage_with_options(live_usage, live_options); | |
1362 | } | |
1363 | ||
70f7b4a7 DA |
1364 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1365 | ||
1afe1d14 DA |
1366 | /* |
1367 | * target related setups | |
1368 | */ | |
602ad878 | 1369 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1370 | if (err) { |
602ad878 | 1371 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1372 | ui__warning("%s", errbuf); |
1373 | } | |
1374 | ||
602ad878 | 1375 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1376 | kvm->opts.target.system_wide = true; |
1377 | ||
1378 | ||
1379 | /* | |
1380 | * generate the event list | |
1381 | */ | |
1382 | kvm->evlist = kvm_live_event_list(); | |
1383 | if (kvm->evlist == NULL) { | |
1384 | err = -1; | |
1385 | goto out; | |
1386 | } | |
1387 | ||
1388 | symbol_conf.nr_events = kvm->evlist->nr_entries; | |
1389 | ||
1390 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) | |
1391 | usage_with_options(live_usage, live_options); | |
1392 | ||
1393 | /* | |
1394 | * perf session | |
1395 | */ | |
f5fc1412 | 1396 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
1afe1d14 | 1397 | if (kvm->session == NULL) { |
52e02834 | 1398 | err = -1; |
1afe1d14 DA |
1399 | goto out; |
1400 | } | |
1401 | kvm->session->evlist = kvm->evlist; | |
1402 | perf_session__set_id_hdr_size(kvm->session); | |
673d659f | 1403 | ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); |
a33fbd56 | 1404 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
9d9cad76 | 1405 | kvm->evlist->threads, false, kvm->opts.proc_map_timeout); |
1afe1d14 DA |
1406 | err = kvm_live_open_events(kvm); |
1407 | if (err) | |
1408 | goto out; | |
1409 | ||
1410 | err = kvm_events_live_report(kvm); | |
1411 | ||
1412 | out: | |
1413 | exit_browser(0); | |
1414 | ||
1415 | if (kvm->session) | |
1416 | perf_session__delete(kvm->session); | |
1417 | kvm->session = NULL; | |
03ad9747 | 1418 | if (kvm->evlist) |
1afe1d14 | 1419 | perf_evlist__delete(kvm->evlist); |
1afe1d14 DA |
1420 | |
1421 | return err; | |
1422 | } | |
87419c9a | 1423 | #endif |
1afe1d14 | 1424 | |
bcf6edcd XG |
1425 | static void print_kvm_stat_usage(void) |
1426 | { | |
1427 | printf("Usage: perf kvm stat <command>\n\n"); | |
1428 | ||
1429 | printf("# Available commands:\n"); | |
1430 | printf("\trecord: record kvm events\n"); | |
1431 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1432 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1433 | |
1434 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1435 | } | |
1436 | ||
3786063a | 1437 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1438 | { |
3786063a XG |
1439 | struct perf_kvm_stat kvm = { |
1440 | .file_name = file_name, | |
1441 | ||
1442 | .trace_vcpu = -1, | |
1443 | .report_event = "vmexit", | |
1444 | .sort_key = "sample", | |
1445 | ||
3786063a XG |
1446 | }; |
1447 | ||
bcf6edcd XG |
1448 | if (argc == 1) { |
1449 | print_kvm_stat_usage(); | |
1450 | goto perf_stat; | |
1451 | } | |
1452 | ||
1453 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1454 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1455 | |
1456 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1457 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1458 | |
87419c9a | 1459 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1460 | if (!strncmp(argv[1], "live", 4)) |
1461 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1462 | #endif |
1afe1d14 | 1463 | |
bcf6edcd XG |
1464 | perf_stat: |
1465 | return cmd_stat(argc, argv, NULL); | |
1466 | } | |
da50ad69 | 1467 | #endif /* HAVE_KVM_STAT_SUPPORT */ |
bcf6edcd | 1468 | |
3786063a | 1469 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1470 | { |
1471 | int rec_argc, i = 0, j; | |
1472 | const char **rec_argv; | |
1473 | ||
1474 | rec_argc = argc + 2; | |
1475 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1476 | rec_argv[i++] = strdup("record"); | |
1477 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1478 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1479 | for (j = 1; j < argc; j++, i++) |
1480 | rec_argv[i] = argv[j]; | |
1481 | ||
1482 | BUG_ON(i != rec_argc); | |
1483 | ||
1484 | return cmd_record(i, rec_argv, NULL); | |
1485 | } | |
1486 | ||
3786063a | 1487 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1488 | { |
1489 | int rec_argc, i = 0, j; | |
1490 | const char **rec_argv; | |
1491 | ||
1492 | rec_argc = argc + 2; | |
1493 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1494 | rec_argv[i++] = strdup("report"); | |
1495 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1496 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1497 | for (j = 1; j < argc; j++, i++) |
1498 | rec_argv[i] = argv[j]; | |
1499 | ||
1500 | BUG_ON(i != rec_argc); | |
1501 | ||
1502 | return cmd_report(i, rec_argv, NULL); | |
1503 | } | |
1504 | ||
3786063a XG |
1505 | static int |
1506 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1507 | { |
1508 | int rec_argc, i = 0, j; | |
1509 | const char **rec_argv; | |
1510 | ||
1511 | rec_argc = argc + 2; | |
1512 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1513 | rec_argv[i++] = strdup("buildid-list"); | |
1514 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1515 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1516 | for (j = 1; j < argc; j++, i++) |
1517 | rec_argv[i] = argv[j]; | |
1518 | ||
1519 | BUG_ON(i != rec_argc); | |
1520 | ||
1521 | return cmd_buildid_list(i, rec_argv, NULL); | |
1522 | } | |
1523 | ||
1d037ca1 | 1524 | int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused) |
a1645ce1 | 1525 | { |
20914ce5 | 1526 | const char *file_name = NULL; |
de332ac4 | 1527 | const struct option kvm_options[] = { |
3786063a | 1528 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1529 | "Input file name"), |
3786063a | 1530 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1531 | "Output file name"), |
1532 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1533 | "Collect guest os data"), | |
1534 | OPT_BOOLEAN(0, "host", &perf_host, | |
1535 | "Collect host os data"), | |
1536 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1537 | "guest mount directory under which every guest os" | |
1538 | " instance has a subdir"), | |
1539 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1540 | "file", "file saving guest os vmlinux"), | |
1541 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1542 | "file", "file saving guest os /proc/kallsyms"), | |
1543 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1544 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1545 | OPT_INCR('v', "verbose", &verbose, |
1546 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1547 | OPT_END() |
1548 | }; | |
1549 | ||
09a71b97 RR |
1550 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1551 | "buildid-list", "stat", NULL }; | |
1552 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1553 | |
1aed2671 JR |
1554 | perf_host = 0; |
1555 | perf_guest = 1; | |
a1645ce1 | 1556 | |
09a71b97 RR |
1557 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1558 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1559 | if (!argc) |
1560 | usage_with_options(kvm_usage, kvm_options); | |
1561 | ||
1562 | if (!perf_host) | |
1563 | perf_guest = 1; | |
1564 | ||
3786063a | 1565 | if (!file_name) { |
e1a2b174 | 1566 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1567 | |
3786063a | 1568 | if (!file_name) { |
de332ac4 DA |
1569 | pr_err("Failed to allocate memory for filename\n"); |
1570 | return -ENOMEM; | |
1571 | } | |
a1645ce1 ZY |
1572 | } |
1573 | ||
1574 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1575 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1576 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1577 | return __cmd_report(file_name, argc, argv); |
a1645ce1 ZY |
1578 | else if (!strncmp(argv[0], "diff", 4)) |
1579 | return cmd_diff(argc, argv, NULL); | |
1580 | else if (!strncmp(argv[0], "top", 3)) | |
1581 | return cmd_top(argc, argv, NULL); | |
1582 | else if (!strncmp(argv[0], "buildid-list", 12)) | |
3786063a | 1583 | return __cmd_buildid_list(file_name, argc, argv); |
da50ad69 | 1584 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 1585 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1586 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1587 | #endif |
a1645ce1 ZY |
1588 | else |
1589 | usage_with_options(kvm_usage, kvm_options); | |
1590 | ||
1591 | return 0; | |
1592 | } |