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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a1645ce1 ZY |
2 | #include "builtin.h" |
3 | #include "perf.h" | |
4 | ||
bcf6edcd | 5 | #include "util/evsel.h" |
1afe1d14 | 6 | #include "util/evlist.h" |
b0742e90 | 7 | #include "util/term.h" |
a1645ce1 ZY |
8 | #include "util/cache.h" |
9 | #include "util/symbol.h" | |
10 | #include "util/thread.h" | |
11 | #include "util/header.h" | |
12 | #include "util/session.h" | |
2e73f00f | 13 | #include "util/intlist.h" |
4b6ab94e | 14 | #include <subcmd/parse-options.h> |
a1645ce1 | 15 | #include "util/trace-event.h" |
a1645ce1 | 16 | #include "util/debug.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 |
c5e4027e | 27 | #include <sys/time.h> |
bafae98e ACM |
28 | #include <sys/types.h> |
29 | #include <sys/stat.h> | |
30 | #include <fcntl.h> | |
a1645ce1 | 31 | |
877a7a11 | 32 | #include <linux/kernel.h> |
bd48c63e | 33 | #include <linux/time64.h> |
7f7c536f | 34 | #include <linux/zalloc.h> |
a43783ae | 35 | #include <errno.h> |
fd20e811 | 36 | #include <inttypes.h> |
4208735d | 37 | #include <poll.h> |
1afe1d14 | 38 | #include <termios.h> |
a1645ce1 | 39 | #include <semaphore.h> |
9607ad3a | 40 | #include <signal.h> |
a1645ce1 ZY |
41 | #include <math.h> |
42 | ||
bb8c16db ACM |
43 | static const char *get_filename_for_perf_kvm(void) |
44 | { | |
45 | const char *filename; | |
46 | ||
47 | if (perf_host && !perf_guest) | |
48 | filename = strdup("perf.data.host"); | |
49 | else if (!perf_host && perf_guest) | |
50 | filename = strdup("perf.data.guest"); | |
51 | else | |
52 | filename = strdup("perf.data.kvm"); | |
53 | ||
54 | return filename; | |
55 | } | |
56 | ||
da50ad69 | 57 | #ifdef HAVE_KVM_STAT_SUPPORT |
9daa8123 | 58 | #include "util/kvm-stat.h" |
bcf6edcd | 59 | |
9daa8123 AY |
60 | void exit_event_get_key(struct perf_evsel *evsel, |
61 | struct perf_sample *sample, | |
62 | struct event_key *key) | |
bcf6edcd XG |
63 | { |
64 | key->info = 0; | |
162607ea | 65 | key->key = perf_evsel__intval(evsel, sample, kvm_exit_reason); |
bcf6edcd XG |
66 | } |
67 | ||
9daa8123 | 68 | bool kvm_exit_event(struct perf_evsel *evsel) |
bcf6edcd | 69 | { |
162607ea | 70 | return !strcmp(evsel->name, kvm_exit_trace); |
bcf6edcd XG |
71 | } |
72 | ||
9daa8123 AY |
73 | bool exit_event_begin(struct perf_evsel *evsel, |
74 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd | 75 | { |
14907e73 ACM |
76 | if (kvm_exit_event(evsel)) { |
77 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
78 | return true; |
79 | } | |
80 | ||
81 | return false; | |
82 | } | |
83 | ||
9daa8123 | 84 | bool kvm_entry_event(struct perf_evsel *evsel) |
bcf6edcd | 85 | { |
162607ea | 86 | return !strcmp(evsel->name, kvm_entry_trace); |
bcf6edcd XG |
87 | } |
88 | ||
9daa8123 AY |
89 | bool exit_event_end(struct perf_evsel *evsel, |
90 | struct perf_sample *sample __maybe_unused, | |
91 | struct event_key *key __maybe_unused) | |
bcf6edcd | 92 | { |
14907e73 | 93 | return kvm_entry_event(evsel); |
bcf6edcd XG |
94 | } |
95 | ||
df74c13b AY |
96 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, |
97 | struct exit_reasons_table *tbl, | |
98 | u64 exit_code) | |
bcf6edcd | 99 | { |
df74c13b | 100 | while (tbl->reason != NULL) { |
de332ac4 DA |
101 | if (tbl->exit_code == exit_code) |
102 | return tbl->reason; | |
103 | tbl++; | |
bcf6edcd XG |
104 | } |
105 | ||
106 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 107 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
108 | return "UNKNOWN"; |
109 | } | |
110 | ||
9daa8123 AY |
111 | void exit_event_decode_key(struct perf_kvm_stat *kvm, |
112 | struct event_key *key, | |
113 | char *decode) | |
bcf6edcd | 114 | { |
3be8e2a0 | 115 | const char *exit_reason = get_exit_reason(kvm, key->exit_reasons, |
df74c13b | 116 | key->key); |
bcf6edcd | 117 | |
162607ea | 118 | scnprintf(decode, decode_str_len, "%s", exit_reason); |
bcf6edcd XG |
119 | } |
120 | ||
9daa8123 | 121 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd | 122 | { |
9daa8123 | 123 | struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops; |
bcf6edcd | 124 | |
9daa8123 AY |
125 | for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) { |
126 | if (!strcmp(events_ops->name, kvm->report_event)) { | |
127 | kvm->events_ops = events_ops->ops; | |
128 | return true; | |
129 | } | |
bcf6edcd XG |
130 | } |
131 | ||
132 | return false; | |
133 | } | |
134 | ||
bcf6edcd XG |
135 | struct vcpu_event_record { |
136 | int vcpu_id; | |
137 | u64 start_time; | |
138 | struct kvm_event *last_event; | |
139 | }; | |
140 | ||
bcf6edcd | 141 | |
3786063a | 142 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 143 | { |
b880deea | 144 | unsigned int i; |
bcf6edcd | 145 | |
b880deea | 146 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 147 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
148 | } |
149 | ||
87419c9a | 150 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
151 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
152 | { | |
153 | struct list_head *head; | |
154 | struct kvm_event *event; | |
155 | unsigned int i; | |
62d04dbf | 156 | int j; |
1afe1d14 DA |
157 | |
158 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
159 | head = &kvm_events_cache[i]; | |
160 | list_for_each_entry(event, head, hash_entry) { | |
161 | /* reset stats for event */ | |
62d04dbf DA |
162 | event->total.time = 0; |
163 | init_stats(&event->total.stats); | |
164 | ||
165 | for (j = 0; j < event->max_vcpu; ++j) { | |
166 | event->vcpu[j].time = 0; | |
167 | init_stats(&event->vcpu[j].stats); | |
168 | } | |
1afe1d14 DA |
169 | } |
170 | } | |
171 | } | |
87419c9a | 172 | #endif |
1afe1d14 | 173 | |
bcf6edcd XG |
174 | static int kvm_events_hash_fn(u64 key) |
175 | { | |
176 | return key & (EVENTS_CACHE_SIZE - 1); | |
177 | } | |
178 | ||
179 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
180 | { | |
181 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 182 | void *prev; |
bcf6edcd XG |
183 | |
184 | if (vcpu_id < event->max_vcpu) | |
185 | return true; | |
186 | ||
187 | while (event->max_vcpu <= vcpu_id) | |
188 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
189 | ||
6ca5f308 | 190 | prev = event->vcpu; |
bcf6edcd XG |
191 | event->vcpu = realloc(event->vcpu, |
192 | event->max_vcpu * sizeof(*event->vcpu)); | |
193 | if (!event->vcpu) { | |
6ca5f308 | 194 | free(prev); |
bcf6edcd XG |
195 | pr_err("Not enough memory\n"); |
196 | return false; | |
197 | } | |
198 | ||
199 | memset(event->vcpu + old_max_vcpu, 0, | |
200 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
201 | return true; | |
202 | } | |
203 | ||
204 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
205 | { | |
206 | struct kvm_event *event; | |
207 | ||
208 | event = zalloc(sizeof(*event)); | |
209 | if (!event) { | |
210 | pr_err("Not enough memory\n"); | |
211 | return NULL; | |
212 | } | |
213 | ||
214 | event->key = *key; | |
acb61fc8 | 215 | init_stats(&event->total.stats); |
bcf6edcd XG |
216 | return event; |
217 | } | |
218 | ||
3786063a | 219 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 220 | struct event_key *key) |
bcf6edcd XG |
221 | { |
222 | struct kvm_event *event; | |
223 | struct list_head *head; | |
224 | ||
225 | BUG_ON(key->key == INVALID_KEY); | |
226 | ||
de332ac4 | 227 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 228 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
229 | if (event->key.key == key->key && event->key.info == key->info) |
230 | return event; | |
355afe81 | 231 | } |
bcf6edcd XG |
232 | |
233 | event = kvm_alloc_init_event(key); | |
234 | if (!event) | |
235 | return NULL; | |
236 | ||
237 | list_add(&event->hash_entry, head); | |
238 | return event; | |
239 | } | |
240 | ||
3786063a | 241 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 242 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
243 | struct event_key *key, u64 timestamp) |
244 | { | |
245 | struct kvm_event *event = NULL; | |
246 | ||
247 | if (key->key != INVALID_KEY) | |
de332ac4 | 248 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
249 | |
250 | vcpu_record->last_event = event; | |
251 | vcpu_record->start_time = timestamp; | |
252 | return true; | |
253 | } | |
254 | ||
255 | static void | |
256 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
257 | { | |
258 | kvm_stats->time += time_diff; | |
259 | update_stats(&kvm_stats->stats, time_diff); | |
260 | } | |
261 | ||
262 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
263 | { | |
264 | struct kvm_event_stats *kvm_stats = &event->total; | |
265 | ||
266 | if (vcpu_id != -1) | |
267 | kvm_stats = &event->vcpu[vcpu_id]; | |
268 | ||
269 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
270 | avg_stats(&kvm_stats->stats)); | |
271 | } | |
272 | ||
273 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
274 | u64 time_diff) | |
275 | { | |
2aa8eab0 DA |
276 | if (vcpu_id == -1) { |
277 | kvm_update_event_stats(&event->total, time_diff); | |
278 | return true; | |
279 | } | |
bcf6edcd XG |
280 | |
281 | if (!kvm_event_expand(event, vcpu_id)) | |
282 | return false; | |
283 | ||
284 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
285 | return true; | |
286 | } | |
287 | ||
3be8e2a0 AY |
288 | static bool is_child_event(struct perf_kvm_stat *kvm, |
289 | struct perf_evsel *evsel, | |
290 | struct perf_sample *sample, | |
291 | struct event_key *key) | |
292 | { | |
293 | struct child_event_ops *child_ops; | |
294 | ||
295 | child_ops = kvm->events_ops->child_ops; | |
296 | ||
297 | if (!child_ops) | |
298 | return false; | |
299 | ||
300 | for (; child_ops->name; child_ops++) { | |
301 | if (!strcmp(evsel->name, child_ops->name)) { | |
302 | child_ops->get_key(evsel, sample, key); | |
303 | return true; | |
304 | } | |
305 | } | |
306 | ||
307 | return false; | |
308 | } | |
309 | ||
310 | static bool handle_child_event(struct perf_kvm_stat *kvm, | |
311 | struct vcpu_event_record *vcpu_record, | |
312 | struct event_key *key, | |
313 | struct perf_sample *sample __maybe_unused) | |
314 | { | |
315 | struct kvm_event *event = NULL; | |
316 | ||
317 | if (key->key != INVALID_KEY) | |
318 | event = find_create_kvm_event(kvm, key); | |
319 | ||
320 | vcpu_record->last_event = event; | |
321 | ||
322 | return true; | |
323 | } | |
324 | ||
54c801ff AY |
325 | static bool skip_event(const char *event) |
326 | { | |
327 | const char * const *skip_events; | |
328 | ||
329 | for (skip_events = kvm_skip_events; *skip_events; skip_events++) | |
330 | if (!strcmp(event, *skip_events)) | |
331 | return true; | |
332 | ||
333 | return false; | |
334 | } | |
335 | ||
3786063a | 336 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
337 | struct vcpu_event_record *vcpu_record, |
338 | struct event_key *key, | |
70f7b4a7 | 339 | struct perf_sample *sample) |
bcf6edcd XG |
340 | { |
341 | struct kvm_event *event; | |
342 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
343 | int vcpu; |
344 | ||
345 | if (kvm->trace_vcpu == -1) | |
346 | vcpu = -1; | |
347 | else | |
348 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
349 | |
350 | event = vcpu_record->last_event; | |
351 | time_begin = vcpu_record->start_time; | |
352 | ||
353 | /* The begin event is not caught. */ | |
354 | if (!time_begin) | |
355 | return true; | |
356 | ||
357 | /* | |
358 | * In some case, the 'begin event' only records the start timestamp, | |
359 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
360 | */ | |
361 | ||
362 | /* Both begin and end events did not get the key. */ | |
363 | if (!event && key->key == INVALID_KEY) | |
364 | return true; | |
365 | ||
366 | if (!event) | |
de332ac4 | 367 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
368 | |
369 | if (!event) | |
370 | return false; | |
371 | ||
372 | vcpu_record->last_event = NULL; | |
373 | vcpu_record->start_time = 0; | |
374 | ||
1afe1d14 | 375 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 376 | if (sample->time < time_begin) { |
1afe1d14 DA |
377 | pr_debug("End time before begin time; skipping event.\n"); |
378 | return true; | |
379 | } | |
bcf6edcd | 380 | |
70f7b4a7 DA |
381 | time_diff = sample->time - time_begin; |
382 | ||
383 | if (kvm->duration && time_diff > kvm->duration) { | |
162607ea | 384 | char decode[decode_str_len]; |
70f7b4a7 DA |
385 | |
386 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
54c801ff | 387 | if (!skip_event(decode)) { |
70f7b4a7 DA |
388 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", |
389 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
c05a6e14 | 390 | decode, time_diff / NSEC_PER_USEC); |
70f7b4a7 DA |
391 | } |
392 | } | |
393 | ||
2aa8eab0 | 394 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
395 | } |
396 | ||
14907e73 ACM |
397 | static |
398 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
399 | struct perf_evsel *evsel, | |
400 | struct perf_sample *sample) | |
bcf6edcd XG |
401 | { |
402 | /* Only kvm_entry records vcpu id. */ | |
69e865c3 | 403 | if (!thread__priv(thread) && kvm_entry_event(evsel)) { |
bcf6edcd XG |
404 | struct vcpu_event_record *vcpu_record; |
405 | ||
14907e73 | 406 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 407 | if (!vcpu_record) { |
14907e73 | 408 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
409 | return NULL; |
410 | } | |
411 | ||
162607ea HK |
412 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, |
413 | vcpu_id_str); | |
69e865c3 | 414 | thread__set_priv(thread, vcpu_record); |
bcf6edcd XG |
415 | } |
416 | ||
69e865c3 | 417 | return thread__priv(thread); |
bcf6edcd XG |
418 | } |
419 | ||
3786063a | 420 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
421 | struct thread *thread, |
422 | struct perf_evsel *evsel, | |
14907e73 | 423 | struct perf_sample *sample) |
bcf6edcd XG |
424 | { |
425 | struct vcpu_event_record *vcpu_record; | |
3be8e2a0 AY |
426 | struct event_key key = { .key = INVALID_KEY, |
427 | .exit_reasons = kvm->exit_reasons }; | |
bcf6edcd | 428 | |
14907e73 | 429 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
430 | if (!vcpu_record) |
431 | return true; | |
432 | ||
2aa8eab0 DA |
433 | /* only process events for vcpus user cares about */ |
434 | if ((kvm->trace_vcpu != -1) && | |
435 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
436 | return true; | |
437 | ||
de332ac4 DA |
438 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
439 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 440 | |
3be8e2a0 AY |
441 | if (is_child_event(kvm, evsel, sample, &key)) |
442 | return handle_child_event(kvm, vcpu_record, &key, sample); | |
443 | ||
de332ac4 | 444 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 445 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
446 | |
447 | return true; | |
448 | } | |
449 | ||
bcf6edcd XG |
450 | #define GET_EVENT_KEY(func, field) \ |
451 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
452 | { \ | |
453 | if (vcpu == -1) \ | |
454 | return event->total.field; \ | |
455 | \ | |
456 | if (vcpu >= event->max_vcpu) \ | |
457 | return 0; \ | |
458 | \ | |
459 | return event->vcpu[vcpu].field; \ | |
460 | } | |
461 | ||
462 | #define COMPARE_EVENT_KEY(func, field) \ | |
463 | GET_EVENT_KEY(func, field) \ | |
464 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
465 | struct kvm_event *two, int vcpu)\ | |
466 | { \ | |
467 | return get_event_ ##func(one, vcpu) > \ | |
468 | get_event_ ##func(two, vcpu); \ | |
469 | } | |
470 | ||
471 | GET_EVENT_KEY(time, time); | |
472 | COMPARE_EVENT_KEY(count, stats.n); | |
473 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
474 | GET_EVENT_KEY(max, stats.max); |
475 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
476 | |
477 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
478 | { #name, compare_kvm_event_ ## compare_key } | |
479 | ||
480 | static struct kvm_event_key keys[] = { | |
481 | DEF_SORT_NAME_KEY(sample, count), | |
482 | DEF_SORT_NAME_KEY(time, mean), | |
483 | { NULL, NULL } | |
484 | }; | |
485 | ||
3786063a | 486 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
487 | { |
488 | int i; | |
489 | ||
490 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
491 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
492 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
493 | return true; |
494 | } | |
495 | } | |
496 | ||
de332ac4 | 497 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
498 | return false; |
499 | } | |
500 | ||
de332ac4 DA |
501 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
502 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 503 | { |
de332ac4 | 504 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
505 | struct rb_node *parent = NULL; |
506 | struct kvm_event *p; | |
507 | ||
508 | while (*rb) { | |
509 | p = container_of(*rb, struct kvm_event, rb); | |
510 | parent = *rb; | |
511 | ||
512 | if (bigger(event, p, vcpu)) | |
513 | rb = &(*rb)->rb_left; | |
514 | else | |
515 | rb = &(*rb)->rb_right; | |
516 | } | |
517 | ||
518 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 519 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
520 | } |
521 | ||
3786063a XG |
522 | static void |
523 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 524 | { |
de332ac4 DA |
525 | int vcpu = kvm->trace_vcpu; |
526 | ||
527 | kvm->total_count += get_event_count(event, vcpu); | |
528 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
529 | } |
530 | ||
531 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
532 | { | |
533 | return !!get_event_count(event, vcpu); | |
534 | } | |
535 | ||
3786063a | 536 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
537 | { |
538 | unsigned int i; | |
de332ac4 | 539 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
540 | struct kvm_event *event; |
541 | ||
355afe81 DA |
542 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
543 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 544 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
545 | update_total_count(kvm, event); |
546 | insert_to_result(&kvm->result, event, | |
547 | kvm->compare, vcpu); | |
bcf6edcd | 548 | } |
355afe81 DA |
549 | } |
550 | } | |
bcf6edcd XG |
551 | } |
552 | ||
553 | /* returns left most element of result, and erase it */ | |
de332ac4 | 554 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 555 | { |
de332ac4 | 556 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
557 | |
558 | if (!node) | |
559 | return NULL; | |
560 | ||
de332ac4 | 561 | rb_erase(node, result); |
bcf6edcd XG |
562 | return container_of(node, struct kvm_event, rb); |
563 | } | |
564 | ||
1afe1d14 | 565 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 566 | { |
1afe1d14 DA |
567 | int vcpu = kvm->trace_vcpu; |
568 | ||
bcf6edcd XG |
569 | pr_info("Analyze events for "); |
570 | ||
1f3e5b55 AY |
571 | if (kvm->opts.target.system_wide) |
572 | pr_info("all VMs, "); | |
573 | else if (kvm->opts.target.pid) | |
574 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
575 | else | |
576 | pr_info("dazed and confused on what is monitored, "); | |
1afe1d14 | 577 | |
bcf6edcd XG |
578 | if (vcpu == -1) |
579 | pr_info("all VCPUs:\n\n"); | |
580 | else | |
581 | pr_info("VCPU %d:\n\n", vcpu); | |
582 | } | |
583 | ||
1afe1d14 DA |
584 | static void show_timeofday(void) |
585 | { | |
586 | char date[64]; | |
587 | struct timeval tv; | |
588 | struct tm ltime; | |
589 | ||
590 | gettimeofday(&tv, NULL); | |
591 | if (localtime_r(&tv.tv_sec, <ime)) { | |
592 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
593 | pr_info("%s.%06ld", date, tv.tv_usec); | |
594 | } else | |
595 | pr_info("00:00:00.000000"); | |
596 | ||
597 | return; | |
598 | } | |
599 | ||
3786063a | 600 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd | 601 | { |
162607ea | 602 | char decode[decode_str_len]; |
bcf6edcd | 603 | struct kvm_event *event; |
de332ac4 | 604 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 605 | |
1afe1d14 DA |
606 | if (kvm->live) { |
607 | puts(CONSOLE_CLEAR); | |
608 | show_timeofday(); | |
609 | } | |
610 | ||
bcf6edcd | 611 | pr_info("\n\n"); |
1afe1d14 | 612 | print_vcpu_info(kvm); |
162607ea | 613 | pr_info("%*s ", decode_str_len, kvm->events_ops->name); |
bcf6edcd XG |
614 | pr_info("%10s ", "Samples"); |
615 | pr_info("%9s ", "Samples%"); | |
616 | ||
617 | pr_info("%9s ", "Time%"); | |
b048a24c CB |
618 | pr_info("%11s ", "Min Time"); |
619 | pr_info("%11s ", "Max Time"); | |
bcf6edcd XG |
620 | pr_info("%16s ", "Avg time"); |
621 | pr_info("\n\n"); | |
622 | ||
de332ac4 | 623 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 624 | u64 ecount, etime, max, min; |
bcf6edcd XG |
625 | |
626 | ecount = get_event_count(event, vcpu); | |
627 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
628 | max = get_event_max(event, vcpu); |
629 | min = get_event_min(event, vcpu); | |
bcf6edcd | 630 | |
de332ac4 | 631 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
162607ea | 632 | pr_info("%*s ", decode_str_len, decode); |
bcf6edcd | 633 | pr_info("%10llu ", (unsigned long long)ecount); |
de332ac4 DA |
634 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
635 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
c05a6e14 ACM |
636 | pr_info("%9.2fus ", (double)min / NSEC_PER_USEC); |
637 | pr_info("%9.2fus ", (double)max / NSEC_PER_USEC); | |
638 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount / NSEC_PER_USEC, | |
bcf6edcd XG |
639 | kvm_event_rel_stddev(vcpu, event)); |
640 | pr_info("\n"); | |
641 | } | |
642 | ||
e4f7637f | 643 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
c05a6e14 | 644 | kvm->total_count, kvm->total_time / (double)NSEC_PER_USEC); |
1afe1d14 DA |
645 | |
646 | if (kvm->lost_events) | |
647 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
648 | } | |
649 | ||
87419c9a | 650 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
651 | static int process_lost_event(struct perf_tool *tool, |
652 | union perf_event *event __maybe_unused, | |
653 | struct perf_sample *sample __maybe_unused, | |
654 | struct machine *machine __maybe_unused) | |
655 | { | |
656 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
657 | ||
658 | kvm->lost_events++; | |
659 | return 0; | |
bcf6edcd | 660 | } |
87419c9a | 661 | #endif |
bcf6edcd | 662 | |
2e73f00f DA |
663 | static bool skip_sample(struct perf_kvm_stat *kvm, |
664 | struct perf_sample *sample) | |
665 | { | |
666 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
667 | return true; | |
668 | ||
669 | return false; | |
670 | } | |
671 | ||
de332ac4 | 672 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
673 | union perf_event *event, |
674 | struct perf_sample *sample, | |
675 | struct perf_evsel *evsel, | |
676 | struct machine *machine) | |
677 | { | |
b91fc39f | 678 | int err = 0; |
2e73f00f | 679 | struct thread *thread; |
3786063a XG |
680 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
681 | tool); | |
bcf6edcd | 682 | |
2e73f00f DA |
683 | if (skip_sample(kvm, sample)) |
684 | return 0; | |
685 | ||
314add6b | 686 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
687 | if (thread == NULL) { |
688 | pr_debug("problem processing %d event, skipping it.\n", | |
689 | event->header.type); | |
690 | return -1; | |
691 | } | |
692 | ||
de332ac4 | 693 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
b91fc39f | 694 | err = -1; |
bcf6edcd | 695 | |
b91fc39f ACM |
696 | thread__put(thread); |
697 | return err; | |
bcf6edcd XG |
698 | } |
699 | ||
1afe1d14 | 700 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 701 | { |
ec22ecd9 | 702 | char buf[128], *cpuid; |
65c647a6 | 703 | int err; |
1afe1d14 DA |
704 | |
705 | if (kvm->live) { | |
706 | err = get_cpuid(buf, sizeof(buf)); | |
707 | if (err != 0) { | |
ec22ecd9 ACM |
708 | pr_err("Failed to look up CPU type: %s\n", |
709 | str_error_r(err, buf, sizeof(buf))); | |
710 | return -err; | |
1afe1d14 DA |
711 | } |
712 | cpuid = buf; | |
713 | } else | |
714 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 715 | |
65c647a6 AY |
716 | if (!cpuid) { |
717 | pr_err("Failed to look up CPU type\n"); | |
718 | return -EINVAL; | |
1afe1d14 DA |
719 | } |
720 | ||
65c647a6 AY |
721 | err = cpu_isa_init(kvm, cpuid); |
722 | if (err == -ENOTSUP) | |
723 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 | 724 | |
65c647a6 | 725 | return err; |
1afe1d14 DA |
726 | } |
727 | ||
728 | static bool verify_vcpu(int vcpu) | |
729 | { | |
730 | if (vcpu != -1 && vcpu < 0) { | |
731 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
732 | return false; | |
733 | } | |
734 | ||
735 | return true; | |
736 | } | |
737 | ||
87419c9a | 738 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
739 | /* keeping the max events to a modest level to keep |
740 | * the processing of samples per mmap smooth. | |
741 | */ | |
742 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
743 | ||
744 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
745 | u64 *mmap_time) | |
746 | { | |
53172f90 | 747 | struct perf_evlist *evlist = kvm->evlist; |
1afe1d14 | 748 | union perf_event *event; |
53172f90 | 749 | struct perf_mmap *md; |
93d10af2 | 750 | u64 timestamp; |
1afe1d14 DA |
751 | s64 n = 0; |
752 | int err; | |
753 | ||
754 | *mmap_time = ULLONG_MAX; | |
53172f90 | 755 | md = &evlist->mmap[idx]; |
b9bae2c8 | 756 | err = perf_mmap__read_init(md); |
53172f90 KL |
757 | if (err < 0) |
758 | return (err == -EAGAIN) ? 0 : -1; | |
759 | ||
0019dc87 | 760 | while ((event = perf_mmap__read_event(md)) != NULL) { |
53172f90 | 761 | err = perf_evlist__parse_sample_timestamp(evlist, event, ×tamp); |
1afe1d14 | 762 | if (err) { |
d6ace3df | 763 | perf_mmap__consume(md); |
1afe1d14 DA |
764 | pr_err("Failed to parse sample\n"); |
765 | return -1; | |
766 | } | |
767 | ||
93d10af2 | 768 | err = perf_session__queue_event(kvm->session, event, timestamp, 0); |
8e50d384 | 769 | /* |
b7b61cbe | 770 | * FIXME: Here we can't consume the event, as perf_session__queue_event will |
8e50d384 ZZ |
771 | * point to it, and it'll get possibly overwritten by the kernel. |
772 | */ | |
d6ace3df | 773 | perf_mmap__consume(md); |
8e50d384 | 774 | |
1afe1d14 DA |
775 | if (err) { |
776 | pr_err("Failed to enqueue sample: %d\n", err); | |
777 | return -1; | |
778 | } | |
779 | ||
780 | /* save time stamp of our first sample for this mmap */ | |
781 | if (n == 0) | |
93d10af2 | 782 | *mmap_time = timestamp; |
1afe1d14 DA |
783 | |
784 | /* limit events per mmap handled all at once */ | |
785 | n++; | |
786 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
787 | break; | |
788 | } | |
789 | ||
53172f90 | 790 | perf_mmap__read_done(md); |
1afe1d14 DA |
791 | return n; |
792 | } | |
793 | ||
794 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
795 | { | |
796 | int i, err, throttled = 0; | |
797 | s64 n, ntotal = 0; | |
798 | u64 flush_time = ULLONG_MAX, mmap_time; | |
799 | ||
800 | for (i = 0; i < kvm->evlist->nr_mmaps; i++) { | |
801 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); | |
802 | if (n < 0) | |
803 | return -1; | |
804 | ||
805 | /* flush time is going to be the minimum of all the individual | |
806 | * mmap times. Essentially, we flush all the samples queued up | |
807 | * from the last pass under our minimal start time -- that leaves | |
808 | * a very small race for samples to come in with a lower timestamp. | |
809 | * The ioctl to return the perf_clock timestamp should close the | |
810 | * race entirely. | |
811 | */ | |
812 | if (mmap_time < flush_time) | |
813 | flush_time = mmap_time; | |
814 | ||
815 | ntotal += n; | |
816 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
817 | throttled = 1; | |
818 | } | |
819 | ||
820 | /* flush queue after each round in which we processed events */ | |
821 | if (ntotal) { | |
d704ebda ACM |
822 | struct ordered_events *oe = &kvm->session->ordered_events; |
823 | ||
824 | oe->next_flush = flush_time; | |
825 | err = ordered_events__flush(oe, OE_FLUSH__ROUND); | |
1afe1d14 DA |
826 | if (err) { |
827 | if (kvm->lost_events) | |
828 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
829 | kvm->lost_events); | |
830 | return err; | |
831 | } | |
832 | } | |
833 | ||
834 | return throttled; | |
835 | } | |
836 | ||
837 | static volatile int done; | |
838 | ||
839 | static void sig_handler(int sig __maybe_unused) | |
840 | { | |
841 | done = 1; | |
842 | } | |
843 | ||
844 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
845 | { | |
846 | struct itimerspec new_value; | |
847 | int rc = -1; | |
848 | ||
849 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
850 | if (kvm->timerfd < 0) { | |
851 | pr_err("timerfd_create failed\n"); | |
852 | goto out; | |
853 | } | |
854 | ||
855 | new_value.it_value.tv_sec = kvm->display_time; | |
856 | new_value.it_value.tv_nsec = 0; | |
857 | new_value.it_interval.tv_sec = kvm->display_time; | |
858 | new_value.it_interval.tv_nsec = 0; | |
859 | ||
860 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
861 | pr_err("timerfd_settime failed: %d\n", errno); | |
862 | close(kvm->timerfd); | |
863 | goto out; | |
864 | } | |
865 | ||
866 | rc = 0; | |
867 | out: | |
868 | return rc; | |
869 | } | |
870 | ||
871 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
872 | { | |
873 | uint64_t c; | |
874 | int rc; | |
875 | ||
876 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
877 | if (rc < 0) { | |
878 | if (errno == EAGAIN) | |
879 | return 0; | |
880 | ||
881 | pr_err("Failed to read timer fd: %d\n", errno); | |
882 | return -1; | |
883 | } | |
884 | ||
885 | if (rc != sizeof(uint64_t)) { | |
886 | pr_err("Error reading timer fd - invalid size returned\n"); | |
887 | return -1; | |
888 | } | |
889 | ||
890 | if (c != 1) | |
891 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
892 | ||
893 | /* update display */ | |
894 | sort_result(kvm); | |
895 | print_result(kvm); | |
896 | ||
897 | /* reset counts */ | |
898 | clear_events_cache_stats(kvm->kvm_events_cache); | |
899 | kvm->total_count = 0; | |
900 | kvm->total_time = 0; | |
901 | kvm->lost_events = 0; | |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
906 | static int fd_set_nonblock(int fd) | |
907 | { | |
908 | long arg = 0; | |
909 | ||
910 | arg = fcntl(fd, F_GETFL); | |
911 | if (arg < 0) { | |
912 | pr_err("Failed to get current flags for fd %d\n", fd); | |
913 | return -1; | |
914 | } | |
915 | ||
916 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
917 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
918 | return -1; | |
919 | } | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
d5b4130a | 924 | static int perf_kvm__handle_stdin(void) |
1afe1d14 DA |
925 | { |
926 | int c; | |
927 | ||
1afe1d14 | 928 | c = getc(stdin); |
1afe1d14 DA |
929 | if (c == 'q') |
930 | return 1; | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
935 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
936 | { | |
1ca72260 | 937 | int nr_stdin, ret, err = -EINVAL; |
d5b4130a | 938 | struct termios save; |
1afe1d14 DA |
939 | |
940 | /* live flag must be set first */ | |
941 | kvm->live = true; | |
942 | ||
943 | ret = cpu_isa_config(kvm); | |
944 | if (ret < 0) | |
945 | return ret; | |
946 | ||
947 | if (!verify_vcpu(kvm->trace_vcpu) || | |
948 | !select_key(kvm) || | |
949 | !register_kvm_events_ops(kvm)) { | |
950 | goto out; | |
951 | } | |
952 | ||
d5b4130a | 953 | set_term_quiet_input(&save); |
1afe1d14 DA |
954 | init_kvm_event_record(kvm); |
955 | ||
1afe1d14 DA |
956 | signal(SIGINT, sig_handler); |
957 | signal(SIGTERM, sig_handler); | |
958 | ||
1afe1d14 DA |
959 | /* add timer fd */ |
960 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
961 | err = -1; | |
962 | goto out; | |
963 | } | |
964 | ||
fe636add | 965 | if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) |
0a04c9e0 ACM |
966 | goto out; |
967 | ||
0cae013c JO |
968 | nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin)); |
969 | if (nr_stdin < 0) | |
0a04c9e0 ACM |
970 | goto out; |
971 | ||
1afe1d14 DA |
972 | if (fd_set_nonblock(fileno(stdin)) != 0) |
973 | goto out; | |
974 | ||
975 | /* everything is good - enable the events and process */ | |
976 | perf_evlist__enable(kvm->evlist); | |
977 | ||
978 | while (!done) { | |
1ca72260 | 979 | struct fdarray *fda = &kvm->evlist->pollfd; |
1afe1d14 DA |
980 | int rc; |
981 | ||
982 | rc = perf_kvm__mmap_read(kvm); | |
983 | if (rc < 0) | |
984 | break; | |
985 | ||
986 | err = perf_kvm__handle_timerfd(kvm); | |
987 | if (err) | |
988 | goto out; | |
989 | ||
1ca72260 | 990 | if (fda->entries[nr_stdin].revents & POLLIN) |
d5b4130a | 991 | done = perf_kvm__handle_stdin(); |
1afe1d14 DA |
992 | |
993 | if (!rc && !done) | |
1ca72260 | 994 | err = fdarray__poll(fda, 100); |
1afe1d14 DA |
995 | } |
996 | ||
997 | perf_evlist__disable(kvm->evlist); | |
998 | ||
999 | if (err == 0) { | |
1000 | sort_result(kvm); | |
1001 | print_result(kvm); | |
1002 | } | |
1003 | ||
1004 | out: | |
1005 | if (kvm->timerfd >= 0) | |
1006 | close(kvm->timerfd); | |
1007 | ||
d5b4130a | 1008 | tcsetattr(0, TCSAFLUSH, &save); |
1afe1d14 DA |
1009 | return err; |
1010 | } | |
1011 | ||
1012 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
1013 | { | |
1014 | int err, rc = -1; | |
1015 | struct perf_evsel *pos; | |
1016 | struct perf_evlist *evlist = kvm->evlist; | |
f9f33fdb | 1017 | char sbuf[STRERR_BUFSIZE]; |
1afe1d14 | 1018 | |
e68ae9cf | 1019 | perf_evlist__config(evlist, &kvm->opts, NULL); |
1afe1d14 DA |
1020 | |
1021 | /* | |
1022 | * Note: exclude_{guest,host} do not apply here. | |
1023 | * This command processes KVM tracepoints from host only | |
1024 | */ | |
e5cadb93 | 1025 | evlist__for_each_entry(evlist, pos) { |
1afe1d14 DA |
1026 | struct perf_event_attr *attr = &pos->attr; |
1027 | ||
1028 | /* make sure these *are* set */ | |
e71aa283 AH |
1029 | perf_evsel__set_sample_bit(pos, TID); |
1030 | perf_evsel__set_sample_bit(pos, TIME); | |
1031 | perf_evsel__set_sample_bit(pos, CPU); | |
1032 | perf_evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 1033 | /* make sure these are *not*; want as small a sample as possible */ |
e71aa283 AH |
1034 | perf_evsel__reset_sample_bit(pos, PERIOD); |
1035 | perf_evsel__reset_sample_bit(pos, IP); | |
1036 | perf_evsel__reset_sample_bit(pos, CALLCHAIN); | |
1037 | perf_evsel__reset_sample_bit(pos, ADDR); | |
1038 | perf_evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1039 | attr->mmap = 0; |
1040 | attr->comm = 0; | |
1041 | attr->task = 0; | |
1042 | ||
1043 | attr->sample_period = 1; | |
1044 | ||
1045 | attr->watermark = 0; | |
1046 | attr->wakeup_events = 1000; | |
1047 | ||
1048 | /* will enable all once we are ready */ | |
1049 | attr->disabled = 1; | |
1050 | } | |
1051 | ||
1052 | err = perf_evlist__open(evlist); | |
1053 | if (err < 0) { | |
f9f33fdb | 1054 | printf("Couldn't create the events: %s\n", |
c8b5f2c9 | 1055 | str_error_r(errno, sbuf, sizeof(sbuf))); |
1afe1d14 | 1056 | goto out; |
bcf6edcd XG |
1057 | } |
1058 | ||
f74b9d3a | 1059 | if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages) < 0) { |
f9f33fdb | 1060 | ui__error("Failed to mmap the events: %s\n", |
c8b5f2c9 | 1061 | str_error_r(errno, sbuf, sizeof(sbuf))); |
1afe1d14 DA |
1062 | perf_evlist__close(evlist); |
1063 | goto out; | |
1064 | } | |
1065 | ||
1066 | rc = 0; | |
1067 | ||
1068 | out: | |
1069 | return rc; | |
bcf6edcd | 1070 | } |
87419c9a | 1071 | #endif |
bcf6edcd | 1072 | |
3786063a | 1073 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1074 | { |
bcf6edcd XG |
1075 | int ret; |
1076 | ||
de332ac4 DA |
1077 | struct perf_tool eops = { |
1078 | .sample = process_sample_event, | |
1079 | .comm = perf_event__process_comm, | |
f3b3614a | 1080 | .namespaces = perf_event__process_namespaces, |
0a8cb85c | 1081 | .ordered_events = true, |
de332ac4 | 1082 | }; |
8ceb41d7 | 1083 | struct perf_data file = { |
2d4f2799 JO |
1084 | .path = kvm->file_name, |
1085 | .mode = PERF_DATA_MODE_READ, | |
1086 | .force = kvm->force, | |
f5fc1412 | 1087 | }; |
de332ac4 DA |
1088 | |
1089 | kvm->tool = eops; | |
f5fc1412 | 1090 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
de332ac4 | 1091 | if (!kvm->session) { |
bcf6edcd | 1092 | pr_err("Initializing perf session failed\n"); |
52e02834 | 1093 | return -1; |
bcf6edcd XG |
1094 | } |
1095 | ||
0a7e6d1b | 1096 | symbol__init(&kvm->session->header.env); |
14d37f38 | 1097 | |
41b98360 TS |
1098 | if (!perf_session__has_traces(kvm->session, "kvm record")) { |
1099 | ret = -EINVAL; | |
1100 | goto out_delete; | |
1101 | } | |
bcf6edcd XG |
1102 | |
1103 | /* | |
1104 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1105 | * traced in the old kernel. | |
1106 | */ | |
1afe1d14 | 1107 | ret = cpu_isa_config(kvm); |
bcf6edcd | 1108 | if (ret < 0) |
41b98360 TS |
1109 | goto out_delete; |
1110 | ||
1111 | ret = perf_session__process_events(kvm->session); | |
bcf6edcd | 1112 | |
41b98360 TS |
1113 | out_delete: |
1114 | perf_session__delete(kvm->session); | |
1115 | return ret; | |
bcf6edcd XG |
1116 | } |
1117 | ||
2e73f00f DA |
1118 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1119 | { | |
3ae4a76a AY |
1120 | if (kvm->opts.target.pid) { |
1121 | kvm->pid_list = intlist__new(kvm->opts.target.pid); | |
2e73f00f DA |
1122 | if (kvm->pid_list == NULL) { |
1123 | pr_err("Error parsing process id string\n"); | |
1124 | return -EINVAL; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | return 0; | |
1129 | } | |
1130 | ||
3786063a | 1131 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1132 | { |
1133 | int ret = -EINVAL; | |
de332ac4 | 1134 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1135 | |
2e73f00f DA |
1136 | if (parse_target_str(kvm) != 0) |
1137 | goto exit; | |
1138 | ||
bcf6edcd XG |
1139 | if (!verify_vcpu(vcpu)) |
1140 | goto exit; | |
1141 | ||
de332ac4 | 1142 | if (!select_key(kvm)) |
bcf6edcd XG |
1143 | goto exit; |
1144 | ||
de332ac4 | 1145 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1146 | goto exit; |
1147 | ||
de332ac4 | 1148 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1149 | setup_pager(); |
1150 | ||
de332ac4 | 1151 | ret = read_events(kvm); |
bcf6edcd XG |
1152 | if (ret) |
1153 | goto exit; | |
1154 | ||
de332ac4 DA |
1155 | sort_result(kvm); |
1156 | print_result(kvm); | |
1157 | ||
bcf6edcd XG |
1158 | exit: |
1159 | return ret; | |
1160 | } | |
1161 | ||
bcf6edcd XG |
1162 | #define STRDUP_FAIL_EXIT(s) \ |
1163 | ({ char *_p; \ | |
1164 | _p = strdup(s); \ | |
1165 | if (!_p) \ | |
1166 | return -ENOMEM; \ | |
1167 | _p; \ | |
1168 | }) | |
1169 | ||
066d3593 HK |
1170 | int __weak setup_kvm_events_tp(struct perf_kvm_stat *kvm __maybe_unused) |
1171 | { | |
1172 | return 0; | |
1173 | } | |
1174 | ||
3786063a XG |
1175 | static int |
1176 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd | 1177 | { |
9daa8123 | 1178 | unsigned int rec_argc, i, j, events_tp_size; |
bcf6edcd | 1179 | const char **rec_argv; |
8fdd84c4 DA |
1180 | const char * const record_args[] = { |
1181 | "record", | |
1182 | "-R", | |
8fdd84c4 DA |
1183 | "-m", "1024", |
1184 | "-c", "1", | |
1185 | }; | |
f45d20ff NK |
1186 | const char * const kvm_stat_record_usage[] = { |
1187 | "perf kvm stat record [<options>]", | |
1188 | NULL | |
1189 | }; | |
9daa8123 | 1190 | const char * const *events_tp; |
066d3593 HK |
1191 | int ret; |
1192 | ||
9daa8123 | 1193 | events_tp_size = 0; |
066d3593 HK |
1194 | ret = setup_kvm_events_tp(kvm); |
1195 | if (ret < 0) { | |
1196 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1197 | return ret; | |
1198 | } | |
9daa8123 AY |
1199 | |
1200 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) | |
1201 | events_tp_size++; | |
bcf6edcd | 1202 | |
8fdd84c4 | 1203 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
9daa8123 | 1204 | 2 * events_tp_size; |
bcf6edcd XG |
1205 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1206 | ||
1207 | if (rec_argv == NULL) | |
1208 | return -ENOMEM; | |
1209 | ||
1210 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1211 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1212 | ||
9daa8123 | 1213 | for (j = 0; j < events_tp_size; j++) { |
8fdd84c4 DA |
1214 | rec_argv[i++] = "-e"; |
1215 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1216 | } | |
1217 | ||
bcf6edcd | 1218 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1219 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1220 | |
1221 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1222 | rec_argv[i] = argv[j]; | |
1223 | ||
f45d20ff NK |
1224 | set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); |
1225 | set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); | |
1226 | set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); | |
1227 | ||
1228 | set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); | |
1229 | set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); | |
1230 | set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); | |
1231 | set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); | |
1232 | set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); | |
1233 | set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); | |
1234 | set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); | |
1235 | set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); | |
1236 | set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); | |
1237 | set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); | |
1238 | set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); | |
1239 | set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); | |
1240 | set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); | |
1241 | set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); | |
1242 | set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); | |
1243 | ||
1244 | record_usage = kvm_stat_record_usage; | |
b0ad8ea6 | 1245 | return cmd_record(i, rec_argv); |
bcf6edcd XG |
1246 | } |
1247 | ||
3786063a XG |
1248 | static int |
1249 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1250 | { |
1251 | const struct option kvm_events_report_options[] = { | |
1252 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
3be8e2a0 AY |
1253 | "event for reporting: vmexit, " |
1254 | "mmio (x86 only), ioport (x86 only)"), | |
de332ac4 DA |
1255 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1256 | "vcpu id to report"), | |
1257 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1258 | "key for sorting: sample(sort by samples number)" | |
1259 | " time (sort by avg time)"), | |
3ae4a76a | 1260 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", |
2e73f00f | 1261 | "analyze events only for given process id(s)"), |
8cc5ec1f | 1262 | OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), |
de332ac4 DA |
1263 | OPT_END() |
1264 | }; | |
bcf6edcd | 1265 | |
de332ac4 DA |
1266 | const char * const kvm_events_report_usage[] = { |
1267 | "perf kvm stat report [<options>]", | |
1268 | NULL | |
1269 | }; | |
bcf6edcd | 1270 | |
bcf6edcd XG |
1271 | if (argc) { |
1272 | argc = parse_options(argc, argv, | |
1273 | kvm_events_report_options, | |
1274 | kvm_events_report_usage, 0); | |
1275 | if (argc) | |
1276 | usage_with_options(kvm_events_report_usage, | |
1277 | kvm_events_report_options); | |
1278 | } | |
1279 | ||
f181957c AY |
1280 | if (!kvm->opts.target.pid) |
1281 | kvm->opts.target.system_wide = true; | |
1282 | ||
de332ac4 | 1283 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1284 | } |
1285 | ||
87419c9a | 1286 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1287 | static struct perf_evlist *kvm_live_event_list(void) |
1288 | { | |
1289 | struct perf_evlist *evlist; | |
1290 | char *tp, *name, *sys; | |
1afe1d14 | 1291 | int err = -1; |
9daa8123 | 1292 | const char * const *events_tp; |
1afe1d14 DA |
1293 | |
1294 | evlist = perf_evlist__new(); | |
1295 | if (evlist == NULL) | |
1296 | return NULL; | |
1297 | ||
9daa8123 | 1298 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) { |
1afe1d14 | 1299 | |
9daa8123 | 1300 | tp = strdup(*events_tp); |
1afe1d14 DA |
1301 | if (tp == NULL) |
1302 | goto out; | |
1303 | ||
1304 | /* split tracepoint into subsystem and name */ | |
1305 | sys = tp; | |
1306 | name = strchr(tp, ':'); | |
1307 | if (name == NULL) { | |
1308 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
9daa8123 | 1309 | *events_tp); |
1afe1d14 DA |
1310 | free(tp); |
1311 | goto out; | |
1312 | } | |
1313 | *name = '\0'; | |
1314 | name++; | |
1315 | ||
1316 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
9daa8123 | 1317 | pr_err("Failed to add %s tracepoint to the list\n", *events_tp); |
1afe1d14 DA |
1318 | free(tp); |
1319 | goto out; | |
1320 | } | |
1321 | ||
1322 | free(tp); | |
1323 | } | |
1324 | ||
1325 | err = 0; | |
1326 | ||
1327 | out: | |
1328 | if (err) { | |
1329 | perf_evlist__delete(evlist); | |
1330 | evlist = NULL; | |
1331 | } | |
1332 | ||
1333 | return evlist; | |
1334 | } | |
1335 | ||
1336 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1337 | int argc, const char **argv) | |
1338 | { | |
1339 | char errbuf[BUFSIZ]; | |
1340 | int err; | |
1341 | ||
1342 | const struct option live_options[] = { | |
1343 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1344 | "record events on existing process id"), | |
994a1f78 JO |
1345 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
1346 | "number of mmap data pages", | |
1347 | perf_evlist__parse_mmap_pages), | |
1afe1d14 DA |
1348 | OPT_INCR('v', "verbose", &verbose, |
1349 | "be more verbose (show counter open errors, etc)"), | |
1350 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1351 | "system-wide collection from all CPUs"), | |
1352 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1353 | "time in seconds between display updates"), | |
1354 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
99d348a8 AY |
1355 | "event for reporting: " |
1356 | "vmexit, mmio (x86 only), ioport (x86 only)"), | |
1afe1d14 DA |
1357 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1358 | "vcpu id to report"), | |
1359 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1360 | "key for sorting: sample(sort by samples number)" | |
1361 | " time (sort by avg time)"), | |
70f7b4a7 | 1362 | OPT_U64(0, "duration", &kvm->duration, |
3be8e2a0 AY |
1363 | "show events other than" |
1364 | " HLT (x86 only) or Wait state (s390 only)" | |
1365 | " that take longer than duration usecs"), | |
3fcb10e4 | 1366 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 1367 | "per thread proc mmap processing timeout in ms"), |
1afe1d14 DA |
1368 | OPT_END() |
1369 | }; | |
1370 | const char * const live_usage[] = { | |
1371 | "perf kvm stat live [<options>]", | |
1372 | NULL | |
1373 | }; | |
8ceb41d7 | 1374 | struct perf_data data = { |
f5fc1412 JO |
1375 | .mode = PERF_DATA_MODE_WRITE, |
1376 | }; | |
1afe1d14 DA |
1377 | |
1378 | ||
1379 | /* event handling */ | |
1380 | kvm->tool.sample = process_sample_event; | |
1381 | kvm->tool.comm = perf_event__process_comm; | |
1382 | kvm->tool.exit = perf_event__process_exit; | |
1383 | kvm->tool.fork = perf_event__process_fork; | |
1384 | kvm->tool.lost = process_lost_event; | |
f3b3614a | 1385 | kvm->tool.namespaces = perf_event__process_namespaces; |
0a8cb85c | 1386 | kvm->tool.ordered_events = true; |
1afe1d14 DA |
1387 | perf_tool__fill_defaults(&kvm->tool); |
1388 | ||
1389 | /* set defaults */ | |
1390 | kvm->display_time = 1; | |
1391 | kvm->opts.user_interval = 1; | |
1392 | kvm->opts.mmap_pages = 512; | |
1393 | kvm->opts.target.uses_mmap = false; | |
1394 | kvm->opts.target.uid_str = NULL; | |
1395 | kvm->opts.target.uid = UINT_MAX; | |
1396 | ||
0a7e6d1b | 1397 | symbol__init(NULL); |
1afe1d14 DA |
1398 | disable_buildid_cache(); |
1399 | ||
1400 | use_browser = 0; | |
1afe1d14 DA |
1401 | |
1402 | if (argc) { | |
1403 | argc = parse_options(argc, argv, live_options, | |
1404 | live_usage, 0); | |
1405 | if (argc) | |
1406 | usage_with_options(live_usage, live_options); | |
1407 | } | |
1408 | ||
70f7b4a7 DA |
1409 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1410 | ||
1afe1d14 DA |
1411 | /* |
1412 | * target related setups | |
1413 | */ | |
602ad878 | 1414 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1415 | if (err) { |
602ad878 | 1416 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1417 | ui__warning("%s", errbuf); |
1418 | } | |
1419 | ||
602ad878 | 1420 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1421 | kvm->opts.target.system_wide = true; |
1422 | ||
1423 | ||
1424 | /* | |
1425 | * generate the event list | |
1426 | */ | |
066d3593 HK |
1427 | err = setup_kvm_events_tp(kvm); |
1428 | if (err < 0) { | |
1429 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1430 | return err; | |
1431 | } | |
1432 | ||
1afe1d14 DA |
1433 | kvm->evlist = kvm_live_event_list(); |
1434 | if (kvm->evlist == NULL) { | |
1435 | err = -1; | |
1436 | goto out; | |
1437 | } | |
1438 | ||
1afe1d14 DA |
1439 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) |
1440 | usage_with_options(live_usage, live_options); | |
1441 | ||
1442 | /* | |
1443 | * perf session | |
1444 | */ | |
8ceb41d7 | 1445 | kvm->session = perf_session__new(&data, false, &kvm->tool); |
1afe1d14 | 1446 | if (kvm->session == NULL) { |
52e02834 | 1447 | err = -1; |
1afe1d14 DA |
1448 | goto out; |
1449 | } | |
1450 | kvm->session->evlist = kvm->evlist; | |
1451 | perf_session__set_id_hdr_size(kvm->session); | |
673d659f | 1452 | ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); |
a33fbd56 | 1453 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
3fcb10e4 | 1454 | kvm->evlist->threads, false, 1); |
1afe1d14 DA |
1455 | err = kvm_live_open_events(kvm); |
1456 | if (err) | |
1457 | goto out; | |
1458 | ||
1459 | err = kvm_events_live_report(kvm); | |
1460 | ||
1461 | out: | |
e1446551 | 1462 | perf_session__delete(kvm->session); |
1afe1d14 | 1463 | kvm->session = NULL; |
0b04b3dc | 1464 | perf_evlist__delete(kvm->evlist); |
1afe1d14 DA |
1465 | |
1466 | return err; | |
1467 | } | |
87419c9a | 1468 | #endif |
1afe1d14 | 1469 | |
bcf6edcd XG |
1470 | static void print_kvm_stat_usage(void) |
1471 | { | |
1472 | printf("Usage: perf kvm stat <command>\n\n"); | |
1473 | ||
1474 | printf("# Available commands:\n"); | |
1475 | printf("\trecord: record kvm events\n"); | |
1476 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1477 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1478 | |
1479 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1480 | } | |
1481 | ||
3786063a | 1482 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1483 | { |
3786063a XG |
1484 | struct perf_kvm_stat kvm = { |
1485 | .file_name = file_name, | |
1486 | ||
1487 | .trace_vcpu = -1, | |
1488 | .report_event = "vmexit", | |
1489 | .sort_key = "sample", | |
1490 | ||
3786063a XG |
1491 | }; |
1492 | ||
bcf6edcd XG |
1493 | if (argc == 1) { |
1494 | print_kvm_stat_usage(); | |
1495 | goto perf_stat; | |
1496 | } | |
1497 | ||
1498 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1499 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1500 | |
1501 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1502 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1503 | |
87419c9a | 1504 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1505 | if (!strncmp(argv[1], "live", 4)) |
1506 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1507 | #endif |
1afe1d14 | 1508 | |
bcf6edcd | 1509 | perf_stat: |
b0ad8ea6 | 1510 | return cmd_stat(argc, argv); |
bcf6edcd | 1511 | } |
da50ad69 | 1512 | #endif /* HAVE_KVM_STAT_SUPPORT */ |
bcf6edcd | 1513 | |
3786063a | 1514 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1515 | { |
1516 | int rec_argc, i = 0, j; | |
1517 | const char **rec_argv; | |
1518 | ||
1519 | rec_argc = argc + 2; | |
1520 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1521 | rec_argv[i++] = strdup("record"); | |
1522 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1523 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1524 | for (j = 1; j < argc; j++, i++) |
1525 | rec_argv[i] = argv[j]; | |
1526 | ||
1527 | BUG_ON(i != rec_argc); | |
1528 | ||
b0ad8ea6 | 1529 | return cmd_record(i, rec_argv); |
a1645ce1 ZY |
1530 | } |
1531 | ||
3786063a | 1532 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1533 | { |
1534 | int rec_argc, i = 0, j; | |
1535 | const char **rec_argv; | |
1536 | ||
1537 | rec_argc = argc + 2; | |
1538 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1539 | rec_argv[i++] = strdup("report"); | |
1540 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1541 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1542 | for (j = 1; j < argc; j++, i++) |
1543 | rec_argv[i] = argv[j]; | |
1544 | ||
1545 | BUG_ON(i != rec_argc); | |
1546 | ||
b0ad8ea6 | 1547 | return cmd_report(i, rec_argv); |
a1645ce1 ZY |
1548 | } |
1549 | ||
3786063a XG |
1550 | static int |
1551 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1552 | { |
1553 | int rec_argc, i = 0, j; | |
1554 | const char **rec_argv; | |
1555 | ||
1556 | rec_argc = argc + 2; | |
1557 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1558 | rec_argv[i++] = strdup("buildid-list"); | |
1559 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1560 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1561 | for (j = 1; j < argc; j++, i++) |
1562 | rec_argv[i] = argv[j]; | |
1563 | ||
1564 | BUG_ON(i != rec_argc); | |
1565 | ||
b0ad8ea6 | 1566 | return cmd_buildid_list(i, rec_argv); |
a1645ce1 ZY |
1567 | } |
1568 | ||
b0ad8ea6 | 1569 | int cmd_kvm(int argc, const char **argv) |
a1645ce1 | 1570 | { |
20914ce5 | 1571 | const char *file_name = NULL; |
de332ac4 | 1572 | const struct option kvm_options[] = { |
3786063a | 1573 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1574 | "Input file name"), |
3786063a | 1575 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1576 | "Output file name"), |
1577 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1578 | "Collect guest os data"), | |
1579 | OPT_BOOLEAN(0, "host", &perf_host, | |
1580 | "Collect host os data"), | |
1581 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1582 | "guest mount directory under which every guest os" | |
1583 | " instance has a subdir"), | |
1584 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1585 | "file", "file saving guest os vmlinux"), | |
1586 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1587 | "file", "file saving guest os /proc/kallsyms"), | |
1588 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1589 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1590 | OPT_INCR('v', "verbose", &verbose, |
1591 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1592 | OPT_END() |
1593 | }; | |
1594 | ||
09a71b97 RR |
1595 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1596 | "buildid-list", "stat", NULL }; | |
1597 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1598 | |
1aed2671 JR |
1599 | perf_host = 0; |
1600 | perf_guest = 1; | |
a1645ce1 | 1601 | |
09a71b97 RR |
1602 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1603 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1604 | if (!argc) |
1605 | usage_with_options(kvm_usage, kvm_options); | |
1606 | ||
1607 | if (!perf_host) | |
1608 | perf_guest = 1; | |
1609 | ||
3786063a | 1610 | if (!file_name) { |
e1a2b174 | 1611 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1612 | |
3786063a | 1613 | if (!file_name) { |
de332ac4 DA |
1614 | pr_err("Failed to allocate memory for filename\n"); |
1615 | return -ENOMEM; | |
1616 | } | |
a1645ce1 ZY |
1617 | } |
1618 | ||
1619 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1620 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1621 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1622 | return __cmd_report(file_name, argc, argv); |
a1645ce1 | 1623 | else if (!strncmp(argv[0], "diff", 4)) |
b0ad8ea6 | 1624 | return cmd_diff(argc, argv); |
a1645ce1 | 1625 | else if (!strncmp(argv[0], "top", 3)) |
b0ad8ea6 | 1626 | return cmd_top(argc, argv); |
a1645ce1 | 1627 | else if (!strncmp(argv[0], "buildid-list", 12)) |
3786063a | 1628 | return __cmd_buildid_list(file_name, argc, argv); |
da50ad69 | 1629 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 1630 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1631 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1632 | #endif |
a1645ce1 ZY |
1633 | else |
1634 | usage_with_options(kvm_usage, kvm_options); | |
1635 | ||
1636 | return 0; | |
1637 | } |