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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a1645ce1 ZY |
2 | #include "builtin.h" |
3 | #include "perf.h" | |
4 | ||
4a3cec84 | 5 | #include "util/build-id.h" |
bcf6edcd | 6 | #include "util/evsel.h" |
1afe1d14 | 7 | #include "util/evlist.h" |
e0fcfb08 | 8 | #include "util/mmap.h" |
b0742e90 | 9 | #include "util/term.h" |
a1645ce1 ZY |
10 | #include "util/symbol.h" |
11 | #include "util/thread.h" | |
12 | #include "util/header.h" | |
13 | #include "util/session.h" | |
2e73f00f | 14 | #include "util/intlist.h" |
fa0d9846 | 15 | #include <subcmd/pager.h> |
4b6ab94e | 16 | #include <subcmd/parse-options.h> |
a1645ce1 | 17 | #include "util/trace-event.h" |
a1645ce1 | 18 | #include "util/debug.h" |
bcf6edcd XG |
19 | #include "util/tool.h" |
20 | #include "util/stat.h" | |
ea49e01c | 21 | #include "util/synthetic-events.h" |
1afe1d14 | 22 | #include "util/top.h" |
f5fc1412 | 23 | #include "util/data.h" |
d704ebda | 24 | #include "util/ordered-events.h" |
8067b3da | 25 | #include "util/kvm-stat.h" |
fa0d9846 | 26 | #include "ui/ui.h" |
a1645ce1 ZY |
27 | |
28 | #include <sys/prctl.h> | |
87419c9a | 29 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 | 30 | #include <sys/timerfd.h> |
87419c9a | 31 | #endif |
c5e4027e | 32 | #include <sys/time.h> |
bafae98e ACM |
33 | #include <sys/types.h> |
34 | #include <sys/stat.h> | |
35 | #include <fcntl.h> | |
a1645ce1 | 36 | |
6ef81c55 | 37 | #include <linux/err.h> |
877a7a11 | 38 | #include <linux/kernel.h> |
fa0d9846 | 39 | #include <linux/string.h> |
bd48c63e | 40 | #include <linux/time64.h> |
7f7c536f | 41 | #include <linux/zalloc.h> |
a43783ae | 42 | #include <errno.h> |
fd20e811 | 43 | #include <inttypes.h> |
4208735d | 44 | #include <poll.h> |
1afe1d14 | 45 | #include <termios.h> |
a1645ce1 | 46 | #include <semaphore.h> |
9607ad3a | 47 | #include <signal.h> |
a1645ce1 | 48 | #include <math.h> |
7728fa0c | 49 | #include <perf/mmap.h> |
a1645ce1 | 50 | |
bb8c16db ACM |
51 | static const char *get_filename_for_perf_kvm(void) |
52 | { | |
53 | const char *filename; | |
54 | ||
55 | if (perf_host && !perf_guest) | |
56 | filename = strdup("perf.data.host"); | |
57 | else if (!perf_host && perf_guest) | |
58 | filename = strdup("perf.data.guest"); | |
59 | else | |
60 | filename = strdup("perf.data.kvm"); | |
61 | ||
62 | return filename; | |
63 | } | |
64 | ||
da50ad69 | 65 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 66 | |
32dcd021 | 67 | void exit_event_get_key(struct evsel *evsel, |
9daa8123 AY |
68 | struct perf_sample *sample, |
69 | struct event_key *key) | |
bcf6edcd XG |
70 | { |
71 | key->info = 0; | |
162607ea | 72 | key->key = perf_evsel__intval(evsel, sample, kvm_exit_reason); |
bcf6edcd XG |
73 | } |
74 | ||
32dcd021 | 75 | bool kvm_exit_event(struct evsel *evsel) |
bcf6edcd | 76 | { |
162607ea | 77 | return !strcmp(evsel->name, kvm_exit_trace); |
bcf6edcd XG |
78 | } |
79 | ||
32dcd021 | 80 | bool exit_event_begin(struct evsel *evsel, |
9daa8123 | 81 | struct perf_sample *sample, struct event_key *key) |
bcf6edcd | 82 | { |
14907e73 ACM |
83 | if (kvm_exit_event(evsel)) { |
84 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
85 | return true; |
86 | } | |
87 | ||
88 | return false; | |
89 | } | |
90 | ||
32dcd021 | 91 | bool kvm_entry_event(struct evsel *evsel) |
bcf6edcd | 92 | { |
162607ea | 93 | return !strcmp(evsel->name, kvm_entry_trace); |
bcf6edcd XG |
94 | } |
95 | ||
32dcd021 | 96 | bool exit_event_end(struct evsel *evsel, |
9daa8123 AY |
97 | struct perf_sample *sample __maybe_unused, |
98 | struct event_key *key __maybe_unused) | |
bcf6edcd | 99 | { |
14907e73 | 100 | return kvm_entry_event(evsel); |
bcf6edcd XG |
101 | } |
102 | ||
df74c13b AY |
103 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, |
104 | struct exit_reasons_table *tbl, | |
105 | u64 exit_code) | |
bcf6edcd | 106 | { |
df74c13b | 107 | while (tbl->reason != NULL) { |
de332ac4 DA |
108 | if (tbl->exit_code == exit_code) |
109 | return tbl->reason; | |
110 | tbl++; | |
bcf6edcd XG |
111 | } |
112 | ||
113 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 114 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
115 | return "UNKNOWN"; |
116 | } | |
117 | ||
9daa8123 AY |
118 | void exit_event_decode_key(struct perf_kvm_stat *kvm, |
119 | struct event_key *key, | |
120 | char *decode) | |
bcf6edcd | 121 | { |
3be8e2a0 | 122 | const char *exit_reason = get_exit_reason(kvm, key->exit_reasons, |
df74c13b | 123 | key->key); |
bcf6edcd | 124 | |
162607ea | 125 | scnprintf(decode, decode_str_len, "%s", exit_reason); |
bcf6edcd XG |
126 | } |
127 | ||
9daa8123 | 128 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd | 129 | { |
9daa8123 | 130 | struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops; |
bcf6edcd | 131 | |
9daa8123 AY |
132 | for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) { |
133 | if (!strcmp(events_ops->name, kvm->report_event)) { | |
134 | kvm->events_ops = events_ops->ops; | |
135 | return true; | |
136 | } | |
bcf6edcd XG |
137 | } |
138 | ||
139 | return false; | |
140 | } | |
141 | ||
bcf6edcd XG |
142 | struct vcpu_event_record { |
143 | int vcpu_id; | |
144 | u64 start_time; | |
145 | struct kvm_event *last_event; | |
146 | }; | |
147 | ||
bcf6edcd | 148 | |
3786063a | 149 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 150 | { |
b880deea | 151 | unsigned int i; |
bcf6edcd | 152 | |
b880deea | 153 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 154 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
155 | } |
156 | ||
87419c9a | 157 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
158 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
159 | { | |
160 | struct list_head *head; | |
161 | struct kvm_event *event; | |
162 | unsigned int i; | |
62d04dbf | 163 | int j; |
1afe1d14 DA |
164 | |
165 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
166 | head = &kvm_events_cache[i]; | |
167 | list_for_each_entry(event, head, hash_entry) { | |
168 | /* reset stats for event */ | |
62d04dbf DA |
169 | event->total.time = 0; |
170 | init_stats(&event->total.stats); | |
171 | ||
172 | for (j = 0; j < event->max_vcpu; ++j) { | |
173 | event->vcpu[j].time = 0; | |
174 | init_stats(&event->vcpu[j].stats); | |
175 | } | |
1afe1d14 DA |
176 | } |
177 | } | |
178 | } | |
87419c9a | 179 | #endif |
1afe1d14 | 180 | |
bcf6edcd XG |
181 | static int kvm_events_hash_fn(u64 key) |
182 | { | |
183 | return key & (EVENTS_CACHE_SIZE - 1); | |
184 | } | |
185 | ||
186 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
187 | { | |
188 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 189 | void *prev; |
bcf6edcd XG |
190 | |
191 | if (vcpu_id < event->max_vcpu) | |
192 | return true; | |
193 | ||
194 | while (event->max_vcpu <= vcpu_id) | |
195 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
196 | ||
6ca5f308 | 197 | prev = event->vcpu; |
bcf6edcd XG |
198 | event->vcpu = realloc(event->vcpu, |
199 | event->max_vcpu * sizeof(*event->vcpu)); | |
200 | if (!event->vcpu) { | |
6ca5f308 | 201 | free(prev); |
bcf6edcd XG |
202 | pr_err("Not enough memory\n"); |
203 | return false; | |
204 | } | |
205 | ||
206 | memset(event->vcpu + old_max_vcpu, 0, | |
207 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
208 | return true; | |
209 | } | |
210 | ||
211 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
212 | { | |
213 | struct kvm_event *event; | |
214 | ||
215 | event = zalloc(sizeof(*event)); | |
216 | if (!event) { | |
217 | pr_err("Not enough memory\n"); | |
218 | return NULL; | |
219 | } | |
220 | ||
221 | event->key = *key; | |
acb61fc8 | 222 | init_stats(&event->total.stats); |
bcf6edcd XG |
223 | return event; |
224 | } | |
225 | ||
3786063a | 226 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 227 | struct event_key *key) |
bcf6edcd XG |
228 | { |
229 | struct kvm_event *event; | |
230 | struct list_head *head; | |
231 | ||
232 | BUG_ON(key->key == INVALID_KEY); | |
233 | ||
de332ac4 | 234 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 235 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
236 | if (event->key.key == key->key && event->key.info == key->info) |
237 | return event; | |
355afe81 | 238 | } |
bcf6edcd XG |
239 | |
240 | event = kvm_alloc_init_event(key); | |
241 | if (!event) | |
242 | return NULL; | |
243 | ||
244 | list_add(&event->hash_entry, head); | |
245 | return event; | |
246 | } | |
247 | ||
3786063a | 248 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 249 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
250 | struct event_key *key, u64 timestamp) |
251 | { | |
252 | struct kvm_event *event = NULL; | |
253 | ||
254 | if (key->key != INVALID_KEY) | |
de332ac4 | 255 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
256 | |
257 | vcpu_record->last_event = event; | |
258 | vcpu_record->start_time = timestamp; | |
259 | return true; | |
260 | } | |
261 | ||
262 | static void | |
263 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
264 | { | |
265 | kvm_stats->time += time_diff; | |
266 | update_stats(&kvm_stats->stats, time_diff); | |
267 | } | |
268 | ||
269 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
270 | { | |
271 | struct kvm_event_stats *kvm_stats = &event->total; | |
272 | ||
273 | if (vcpu_id != -1) | |
274 | kvm_stats = &event->vcpu[vcpu_id]; | |
275 | ||
276 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
277 | avg_stats(&kvm_stats->stats)); | |
278 | } | |
279 | ||
280 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
281 | u64 time_diff) | |
282 | { | |
2aa8eab0 DA |
283 | if (vcpu_id == -1) { |
284 | kvm_update_event_stats(&event->total, time_diff); | |
285 | return true; | |
286 | } | |
bcf6edcd XG |
287 | |
288 | if (!kvm_event_expand(event, vcpu_id)) | |
289 | return false; | |
290 | ||
291 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
292 | return true; | |
293 | } | |
294 | ||
3be8e2a0 | 295 | static bool is_child_event(struct perf_kvm_stat *kvm, |
32dcd021 | 296 | struct evsel *evsel, |
3be8e2a0 AY |
297 | struct perf_sample *sample, |
298 | struct event_key *key) | |
299 | { | |
300 | struct child_event_ops *child_ops; | |
301 | ||
302 | child_ops = kvm->events_ops->child_ops; | |
303 | ||
304 | if (!child_ops) | |
305 | return false; | |
306 | ||
307 | for (; child_ops->name; child_ops++) { | |
308 | if (!strcmp(evsel->name, child_ops->name)) { | |
309 | child_ops->get_key(evsel, sample, key); | |
310 | return true; | |
311 | } | |
312 | } | |
313 | ||
314 | return false; | |
315 | } | |
316 | ||
317 | static bool handle_child_event(struct perf_kvm_stat *kvm, | |
318 | struct vcpu_event_record *vcpu_record, | |
319 | struct event_key *key, | |
320 | struct perf_sample *sample __maybe_unused) | |
321 | { | |
322 | struct kvm_event *event = NULL; | |
323 | ||
324 | if (key->key != INVALID_KEY) | |
325 | event = find_create_kvm_event(kvm, key); | |
326 | ||
327 | vcpu_record->last_event = event; | |
328 | ||
329 | return true; | |
330 | } | |
331 | ||
54c801ff AY |
332 | static bool skip_event(const char *event) |
333 | { | |
334 | const char * const *skip_events; | |
335 | ||
336 | for (skip_events = kvm_skip_events; *skip_events; skip_events++) | |
337 | if (!strcmp(event, *skip_events)) | |
338 | return true; | |
339 | ||
340 | return false; | |
341 | } | |
342 | ||
3786063a | 343 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
344 | struct vcpu_event_record *vcpu_record, |
345 | struct event_key *key, | |
70f7b4a7 | 346 | struct perf_sample *sample) |
bcf6edcd XG |
347 | { |
348 | struct kvm_event *event; | |
349 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
350 | int vcpu; |
351 | ||
352 | if (kvm->trace_vcpu == -1) | |
353 | vcpu = -1; | |
354 | else | |
355 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
356 | |
357 | event = vcpu_record->last_event; | |
358 | time_begin = vcpu_record->start_time; | |
359 | ||
360 | /* The begin event is not caught. */ | |
361 | if (!time_begin) | |
362 | return true; | |
363 | ||
364 | /* | |
365 | * In some case, the 'begin event' only records the start timestamp, | |
366 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
367 | */ | |
368 | ||
369 | /* Both begin and end events did not get the key. */ | |
370 | if (!event && key->key == INVALID_KEY) | |
371 | return true; | |
372 | ||
373 | if (!event) | |
de332ac4 | 374 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
375 | |
376 | if (!event) | |
377 | return false; | |
378 | ||
379 | vcpu_record->last_event = NULL; | |
380 | vcpu_record->start_time = 0; | |
381 | ||
1afe1d14 | 382 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 383 | if (sample->time < time_begin) { |
1afe1d14 DA |
384 | pr_debug("End time before begin time; skipping event.\n"); |
385 | return true; | |
386 | } | |
bcf6edcd | 387 | |
70f7b4a7 DA |
388 | time_diff = sample->time - time_begin; |
389 | ||
390 | if (kvm->duration && time_diff > kvm->duration) { | |
162607ea | 391 | char decode[decode_str_len]; |
70f7b4a7 DA |
392 | |
393 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
54c801ff | 394 | if (!skip_event(decode)) { |
70f7b4a7 DA |
395 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", |
396 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
c05a6e14 | 397 | decode, time_diff / NSEC_PER_USEC); |
70f7b4a7 DA |
398 | } |
399 | } | |
400 | ||
2aa8eab0 | 401 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
402 | } |
403 | ||
14907e73 ACM |
404 | static |
405 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
32dcd021 | 406 | struct evsel *evsel, |
14907e73 | 407 | struct perf_sample *sample) |
bcf6edcd XG |
408 | { |
409 | /* Only kvm_entry records vcpu id. */ | |
69e865c3 | 410 | if (!thread__priv(thread) && kvm_entry_event(evsel)) { |
bcf6edcd XG |
411 | struct vcpu_event_record *vcpu_record; |
412 | ||
14907e73 | 413 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 414 | if (!vcpu_record) { |
14907e73 | 415 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
416 | return NULL; |
417 | } | |
418 | ||
162607ea HK |
419 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, |
420 | vcpu_id_str); | |
69e865c3 | 421 | thread__set_priv(thread, vcpu_record); |
bcf6edcd XG |
422 | } |
423 | ||
69e865c3 | 424 | return thread__priv(thread); |
bcf6edcd XG |
425 | } |
426 | ||
3786063a | 427 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 428 | struct thread *thread, |
32dcd021 | 429 | struct evsel *evsel, |
14907e73 | 430 | struct perf_sample *sample) |
bcf6edcd XG |
431 | { |
432 | struct vcpu_event_record *vcpu_record; | |
3be8e2a0 AY |
433 | struct event_key key = { .key = INVALID_KEY, |
434 | .exit_reasons = kvm->exit_reasons }; | |
bcf6edcd | 435 | |
14907e73 | 436 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
437 | if (!vcpu_record) |
438 | return true; | |
439 | ||
2aa8eab0 DA |
440 | /* only process events for vcpus user cares about */ |
441 | if ((kvm->trace_vcpu != -1) && | |
442 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
443 | return true; | |
444 | ||
de332ac4 DA |
445 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
446 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 447 | |
3be8e2a0 AY |
448 | if (is_child_event(kvm, evsel, sample, &key)) |
449 | return handle_child_event(kvm, vcpu_record, &key, sample); | |
450 | ||
de332ac4 | 451 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 452 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
453 | |
454 | return true; | |
455 | } | |
456 | ||
bcf6edcd XG |
457 | #define GET_EVENT_KEY(func, field) \ |
458 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
459 | { \ | |
460 | if (vcpu == -1) \ | |
461 | return event->total.field; \ | |
462 | \ | |
463 | if (vcpu >= event->max_vcpu) \ | |
464 | return 0; \ | |
465 | \ | |
466 | return event->vcpu[vcpu].field; \ | |
467 | } | |
468 | ||
469 | #define COMPARE_EVENT_KEY(func, field) \ | |
470 | GET_EVENT_KEY(func, field) \ | |
471 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
472 | struct kvm_event *two, int vcpu)\ | |
473 | { \ | |
474 | return get_event_ ##func(one, vcpu) > \ | |
475 | get_event_ ##func(two, vcpu); \ | |
476 | } | |
477 | ||
478 | GET_EVENT_KEY(time, time); | |
479 | COMPARE_EVENT_KEY(count, stats.n); | |
480 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
481 | GET_EVENT_KEY(max, stats.max); |
482 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
483 | |
484 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
485 | { #name, compare_kvm_event_ ## compare_key } | |
486 | ||
487 | static struct kvm_event_key keys[] = { | |
488 | DEF_SORT_NAME_KEY(sample, count), | |
489 | DEF_SORT_NAME_KEY(time, mean), | |
490 | { NULL, NULL } | |
491 | }; | |
492 | ||
3786063a | 493 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
494 | { |
495 | int i; | |
496 | ||
497 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
498 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
499 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
500 | return true; |
501 | } | |
502 | } | |
503 | ||
de332ac4 | 504 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
505 | return false; |
506 | } | |
507 | ||
de332ac4 DA |
508 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
509 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 510 | { |
de332ac4 | 511 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
512 | struct rb_node *parent = NULL; |
513 | struct kvm_event *p; | |
514 | ||
515 | while (*rb) { | |
516 | p = container_of(*rb, struct kvm_event, rb); | |
517 | parent = *rb; | |
518 | ||
519 | if (bigger(event, p, vcpu)) | |
520 | rb = &(*rb)->rb_left; | |
521 | else | |
522 | rb = &(*rb)->rb_right; | |
523 | } | |
524 | ||
525 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 526 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
527 | } |
528 | ||
3786063a XG |
529 | static void |
530 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 531 | { |
de332ac4 DA |
532 | int vcpu = kvm->trace_vcpu; |
533 | ||
534 | kvm->total_count += get_event_count(event, vcpu); | |
535 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
536 | } |
537 | ||
538 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
539 | { | |
540 | return !!get_event_count(event, vcpu); | |
541 | } | |
542 | ||
3786063a | 543 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
544 | { |
545 | unsigned int i; | |
de332ac4 | 546 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
547 | struct kvm_event *event; |
548 | ||
355afe81 DA |
549 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
550 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 551 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
552 | update_total_count(kvm, event); |
553 | insert_to_result(&kvm->result, event, | |
554 | kvm->compare, vcpu); | |
bcf6edcd | 555 | } |
355afe81 DA |
556 | } |
557 | } | |
bcf6edcd XG |
558 | } |
559 | ||
560 | /* returns left most element of result, and erase it */ | |
de332ac4 | 561 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 562 | { |
de332ac4 | 563 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
564 | |
565 | if (!node) | |
566 | return NULL; | |
567 | ||
de332ac4 | 568 | rb_erase(node, result); |
bcf6edcd XG |
569 | return container_of(node, struct kvm_event, rb); |
570 | } | |
571 | ||
1afe1d14 | 572 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 573 | { |
1afe1d14 DA |
574 | int vcpu = kvm->trace_vcpu; |
575 | ||
bcf6edcd XG |
576 | pr_info("Analyze events for "); |
577 | ||
1f3e5b55 AY |
578 | if (kvm->opts.target.system_wide) |
579 | pr_info("all VMs, "); | |
580 | else if (kvm->opts.target.pid) | |
581 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
582 | else | |
583 | pr_info("dazed and confused on what is monitored, "); | |
1afe1d14 | 584 | |
bcf6edcd XG |
585 | if (vcpu == -1) |
586 | pr_info("all VCPUs:\n\n"); | |
587 | else | |
588 | pr_info("VCPU %d:\n\n", vcpu); | |
589 | } | |
590 | ||
1afe1d14 DA |
591 | static void show_timeofday(void) |
592 | { | |
593 | char date[64]; | |
594 | struct timeval tv; | |
595 | struct tm ltime; | |
596 | ||
597 | gettimeofday(&tv, NULL); | |
598 | if (localtime_r(&tv.tv_sec, <ime)) { | |
599 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
600 | pr_info("%s.%06ld", date, tv.tv_usec); | |
601 | } else | |
602 | pr_info("00:00:00.000000"); | |
603 | ||
604 | return; | |
605 | } | |
606 | ||
3786063a | 607 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd | 608 | { |
162607ea | 609 | char decode[decode_str_len]; |
bcf6edcd | 610 | struct kvm_event *event; |
de332ac4 | 611 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 612 | |
1afe1d14 DA |
613 | if (kvm->live) { |
614 | puts(CONSOLE_CLEAR); | |
615 | show_timeofday(); | |
616 | } | |
617 | ||
bcf6edcd | 618 | pr_info("\n\n"); |
1afe1d14 | 619 | print_vcpu_info(kvm); |
162607ea | 620 | pr_info("%*s ", decode_str_len, kvm->events_ops->name); |
bcf6edcd XG |
621 | pr_info("%10s ", "Samples"); |
622 | pr_info("%9s ", "Samples%"); | |
623 | ||
624 | pr_info("%9s ", "Time%"); | |
b048a24c CB |
625 | pr_info("%11s ", "Min Time"); |
626 | pr_info("%11s ", "Max Time"); | |
bcf6edcd XG |
627 | pr_info("%16s ", "Avg time"); |
628 | pr_info("\n\n"); | |
629 | ||
de332ac4 | 630 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 631 | u64 ecount, etime, max, min; |
bcf6edcd XG |
632 | |
633 | ecount = get_event_count(event, vcpu); | |
634 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
635 | max = get_event_max(event, vcpu); |
636 | min = get_event_min(event, vcpu); | |
bcf6edcd | 637 | |
de332ac4 | 638 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
162607ea | 639 | pr_info("%*s ", decode_str_len, decode); |
bcf6edcd | 640 | pr_info("%10llu ", (unsigned long long)ecount); |
de332ac4 DA |
641 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
642 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
c05a6e14 ACM |
643 | pr_info("%9.2fus ", (double)min / NSEC_PER_USEC); |
644 | pr_info("%9.2fus ", (double)max / NSEC_PER_USEC); | |
645 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount / NSEC_PER_USEC, | |
bcf6edcd XG |
646 | kvm_event_rel_stddev(vcpu, event)); |
647 | pr_info("\n"); | |
648 | } | |
649 | ||
e4f7637f | 650 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
c05a6e14 | 651 | kvm->total_count, kvm->total_time / (double)NSEC_PER_USEC); |
1afe1d14 DA |
652 | |
653 | if (kvm->lost_events) | |
654 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
655 | } | |
656 | ||
87419c9a | 657 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
658 | static int process_lost_event(struct perf_tool *tool, |
659 | union perf_event *event __maybe_unused, | |
660 | struct perf_sample *sample __maybe_unused, | |
661 | struct machine *machine __maybe_unused) | |
662 | { | |
663 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
664 | ||
665 | kvm->lost_events++; | |
666 | return 0; | |
bcf6edcd | 667 | } |
87419c9a | 668 | #endif |
bcf6edcd | 669 | |
2e73f00f DA |
670 | static bool skip_sample(struct perf_kvm_stat *kvm, |
671 | struct perf_sample *sample) | |
672 | { | |
673 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
674 | return true; | |
675 | ||
676 | return false; | |
677 | } | |
678 | ||
de332ac4 | 679 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
680 | union perf_event *event, |
681 | struct perf_sample *sample, | |
32dcd021 | 682 | struct evsel *evsel, |
bcf6edcd XG |
683 | struct machine *machine) |
684 | { | |
b91fc39f | 685 | int err = 0; |
2e73f00f | 686 | struct thread *thread; |
3786063a XG |
687 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
688 | tool); | |
bcf6edcd | 689 | |
2e73f00f DA |
690 | if (skip_sample(kvm, sample)) |
691 | return 0; | |
692 | ||
314add6b | 693 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
694 | if (thread == NULL) { |
695 | pr_debug("problem processing %d event, skipping it.\n", | |
696 | event->header.type); | |
697 | return -1; | |
698 | } | |
699 | ||
de332ac4 | 700 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
b91fc39f | 701 | err = -1; |
bcf6edcd | 702 | |
b91fc39f ACM |
703 | thread__put(thread); |
704 | return err; | |
bcf6edcd XG |
705 | } |
706 | ||
1afe1d14 | 707 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 708 | { |
f67001a4 | 709 | char buf[128], *cpuid; |
65c647a6 | 710 | int err; |
1afe1d14 DA |
711 | |
712 | if (kvm->live) { | |
713 | err = get_cpuid(buf, sizeof(buf)); | |
714 | if (err != 0) { | |
f67001a4 ACM |
715 | pr_err("Failed to look up CPU type: %s\n", |
716 | str_error_r(err, buf, sizeof(buf))); | |
717 | return -err; | |
1afe1d14 DA |
718 | } |
719 | cpuid = buf; | |
720 | } else | |
721 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 722 | |
65c647a6 AY |
723 | if (!cpuid) { |
724 | pr_err("Failed to look up CPU type\n"); | |
725 | return -EINVAL; | |
1afe1d14 DA |
726 | } |
727 | ||
65c647a6 AY |
728 | err = cpu_isa_init(kvm, cpuid); |
729 | if (err == -ENOTSUP) | |
730 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 | 731 | |
65c647a6 | 732 | return err; |
1afe1d14 DA |
733 | } |
734 | ||
735 | static bool verify_vcpu(int vcpu) | |
736 | { | |
737 | if (vcpu != -1 && vcpu < 0) { | |
738 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
739 | return false; | |
740 | } | |
741 | ||
742 | return true; | |
743 | } | |
744 | ||
87419c9a | 745 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
746 | /* keeping the max events to a modest level to keep |
747 | * the processing of samples per mmap smooth. | |
748 | */ | |
749 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
750 | ||
751 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
752 | u64 *mmap_time) | |
753 | { | |
63503dba | 754 | struct evlist *evlist = kvm->evlist; |
1afe1d14 | 755 | union perf_event *event; |
a5830532 | 756 | struct mmap *md; |
93d10af2 | 757 | u64 timestamp; |
1afe1d14 DA |
758 | s64 n = 0; |
759 | int err; | |
760 | ||
761 | *mmap_time = ULLONG_MAX; | |
53172f90 | 762 | md = &evlist->mmap[idx]; |
7c4d4182 | 763 | err = perf_mmap__read_init(&md->core); |
53172f90 KL |
764 | if (err < 0) |
765 | return (err == -EAGAIN) ? 0 : -1; | |
766 | ||
151ed5d7 | 767 | while ((event = perf_mmap__read_event(&md->core)) != NULL) { |
53172f90 | 768 | err = perf_evlist__parse_sample_timestamp(evlist, event, ×tamp); |
1afe1d14 | 769 | if (err) { |
7728fa0c | 770 | perf_mmap__consume(&md->core); |
1afe1d14 DA |
771 | pr_err("Failed to parse sample\n"); |
772 | return -1; | |
773 | } | |
774 | ||
93d10af2 | 775 | err = perf_session__queue_event(kvm->session, event, timestamp, 0); |
8e50d384 | 776 | /* |
b7b61cbe | 777 | * FIXME: Here we can't consume the event, as perf_session__queue_event will |
8e50d384 ZZ |
778 | * point to it, and it'll get possibly overwritten by the kernel. |
779 | */ | |
7728fa0c | 780 | perf_mmap__consume(&md->core); |
8e50d384 | 781 | |
1afe1d14 DA |
782 | if (err) { |
783 | pr_err("Failed to enqueue sample: %d\n", err); | |
784 | return -1; | |
785 | } | |
786 | ||
787 | /* save time stamp of our first sample for this mmap */ | |
788 | if (n == 0) | |
93d10af2 | 789 | *mmap_time = timestamp; |
1afe1d14 DA |
790 | |
791 | /* limit events per mmap handled all at once */ | |
792 | n++; | |
793 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
794 | break; | |
795 | } | |
796 | ||
32fdc2ca | 797 | perf_mmap__read_done(&md->core); |
1afe1d14 DA |
798 | return n; |
799 | } | |
800 | ||
801 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
802 | { | |
803 | int i, err, throttled = 0; | |
804 | s64 n, ntotal = 0; | |
805 | u64 flush_time = ULLONG_MAX, mmap_time; | |
806 | ||
c976ee11 | 807 | for (i = 0; i < kvm->evlist->core.nr_mmaps; i++) { |
1afe1d14 DA |
808 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); |
809 | if (n < 0) | |
810 | return -1; | |
811 | ||
812 | /* flush time is going to be the minimum of all the individual | |
813 | * mmap times. Essentially, we flush all the samples queued up | |
814 | * from the last pass under our minimal start time -- that leaves | |
815 | * a very small race for samples to come in with a lower timestamp. | |
816 | * The ioctl to return the perf_clock timestamp should close the | |
817 | * race entirely. | |
818 | */ | |
819 | if (mmap_time < flush_time) | |
820 | flush_time = mmap_time; | |
821 | ||
822 | ntotal += n; | |
823 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
824 | throttled = 1; | |
825 | } | |
826 | ||
827 | /* flush queue after each round in which we processed events */ | |
828 | if (ntotal) { | |
d704ebda ACM |
829 | struct ordered_events *oe = &kvm->session->ordered_events; |
830 | ||
831 | oe->next_flush = flush_time; | |
832 | err = ordered_events__flush(oe, OE_FLUSH__ROUND); | |
1afe1d14 DA |
833 | if (err) { |
834 | if (kvm->lost_events) | |
835 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
836 | kvm->lost_events); | |
837 | return err; | |
838 | } | |
839 | } | |
840 | ||
841 | return throttled; | |
842 | } | |
843 | ||
844 | static volatile int done; | |
845 | ||
846 | static void sig_handler(int sig __maybe_unused) | |
847 | { | |
848 | done = 1; | |
849 | } | |
850 | ||
851 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
852 | { | |
853 | struct itimerspec new_value; | |
854 | int rc = -1; | |
855 | ||
856 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
857 | if (kvm->timerfd < 0) { | |
858 | pr_err("timerfd_create failed\n"); | |
859 | goto out; | |
860 | } | |
861 | ||
862 | new_value.it_value.tv_sec = kvm->display_time; | |
863 | new_value.it_value.tv_nsec = 0; | |
864 | new_value.it_interval.tv_sec = kvm->display_time; | |
865 | new_value.it_interval.tv_nsec = 0; | |
866 | ||
867 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
868 | pr_err("timerfd_settime failed: %d\n", errno); | |
869 | close(kvm->timerfd); | |
870 | goto out; | |
871 | } | |
872 | ||
873 | rc = 0; | |
874 | out: | |
875 | return rc; | |
876 | } | |
877 | ||
878 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
879 | { | |
880 | uint64_t c; | |
881 | int rc; | |
882 | ||
883 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
884 | if (rc < 0) { | |
885 | if (errno == EAGAIN) | |
886 | return 0; | |
887 | ||
888 | pr_err("Failed to read timer fd: %d\n", errno); | |
889 | return -1; | |
890 | } | |
891 | ||
892 | if (rc != sizeof(uint64_t)) { | |
893 | pr_err("Error reading timer fd - invalid size returned\n"); | |
894 | return -1; | |
895 | } | |
896 | ||
897 | if (c != 1) | |
898 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
899 | ||
900 | /* update display */ | |
901 | sort_result(kvm); | |
902 | print_result(kvm); | |
903 | ||
904 | /* reset counts */ | |
905 | clear_events_cache_stats(kvm->kvm_events_cache); | |
906 | kvm->total_count = 0; | |
907 | kvm->total_time = 0; | |
908 | kvm->lost_events = 0; | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | static int fd_set_nonblock(int fd) | |
914 | { | |
915 | long arg = 0; | |
916 | ||
917 | arg = fcntl(fd, F_GETFL); | |
918 | if (arg < 0) { | |
919 | pr_err("Failed to get current flags for fd %d\n", fd); | |
920 | return -1; | |
921 | } | |
922 | ||
923 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
924 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
925 | return -1; | |
926 | } | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
d5b4130a | 931 | static int perf_kvm__handle_stdin(void) |
1afe1d14 DA |
932 | { |
933 | int c; | |
934 | ||
1afe1d14 | 935 | c = getc(stdin); |
1afe1d14 DA |
936 | if (c == 'q') |
937 | return 1; | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
943 | { | |
1ca72260 | 944 | int nr_stdin, ret, err = -EINVAL; |
d5b4130a | 945 | struct termios save; |
1afe1d14 DA |
946 | |
947 | /* live flag must be set first */ | |
948 | kvm->live = true; | |
949 | ||
950 | ret = cpu_isa_config(kvm); | |
951 | if (ret < 0) | |
952 | return ret; | |
953 | ||
954 | if (!verify_vcpu(kvm->trace_vcpu) || | |
955 | !select_key(kvm) || | |
956 | !register_kvm_events_ops(kvm)) { | |
957 | goto out; | |
958 | } | |
959 | ||
d5b4130a | 960 | set_term_quiet_input(&save); |
1afe1d14 DA |
961 | init_kvm_event_record(kvm); |
962 | ||
1afe1d14 DA |
963 | signal(SIGINT, sig_handler); |
964 | signal(SIGTERM, sig_handler); | |
965 | ||
1afe1d14 DA |
966 | /* add timer fd */ |
967 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
968 | err = -1; | |
969 | goto out; | |
970 | } | |
971 | ||
f4009e7b | 972 | if (evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) |
0a04c9e0 ACM |
973 | goto out; |
974 | ||
f4009e7b | 975 | nr_stdin = evlist__add_pollfd(kvm->evlist, fileno(stdin)); |
0cae013c | 976 | if (nr_stdin < 0) |
0a04c9e0 ACM |
977 | goto out; |
978 | ||
1afe1d14 DA |
979 | if (fd_set_nonblock(fileno(stdin)) != 0) |
980 | goto out; | |
981 | ||
982 | /* everything is good - enable the events and process */ | |
1c87f165 | 983 | evlist__enable(kvm->evlist); |
1afe1d14 DA |
984 | |
985 | while (!done) { | |
40cb2d51 | 986 | struct fdarray *fda = &kvm->evlist->core.pollfd; |
1afe1d14 DA |
987 | int rc; |
988 | ||
989 | rc = perf_kvm__mmap_read(kvm); | |
990 | if (rc < 0) | |
991 | break; | |
992 | ||
993 | err = perf_kvm__handle_timerfd(kvm); | |
994 | if (err) | |
995 | goto out; | |
996 | ||
1ca72260 | 997 | if (fda->entries[nr_stdin].revents & POLLIN) |
d5b4130a | 998 | done = perf_kvm__handle_stdin(); |
1afe1d14 DA |
999 | |
1000 | if (!rc && !done) | |
4bfbcf3e | 1001 | err = evlist__poll(kvm->evlist, 100); |
1afe1d14 DA |
1002 | } |
1003 | ||
e74676de | 1004 | evlist__disable(kvm->evlist); |
1afe1d14 DA |
1005 | |
1006 | if (err == 0) { | |
1007 | sort_result(kvm); | |
1008 | print_result(kvm); | |
1009 | } | |
1010 | ||
1011 | out: | |
1012 | if (kvm->timerfd >= 0) | |
1013 | close(kvm->timerfd); | |
1014 | ||
d5b4130a | 1015 | tcsetattr(0, TCSAFLUSH, &save); |
1afe1d14 DA |
1016 | return err; |
1017 | } | |
1018 | ||
1019 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
1020 | { | |
1021 | int err, rc = -1; | |
32dcd021 | 1022 | struct evsel *pos; |
63503dba | 1023 | struct evlist *evlist = kvm->evlist; |
f9f33fdb | 1024 | char sbuf[STRERR_BUFSIZE]; |
1afe1d14 | 1025 | |
e68ae9cf | 1026 | perf_evlist__config(evlist, &kvm->opts, NULL); |
1afe1d14 DA |
1027 | |
1028 | /* | |
1029 | * Note: exclude_{guest,host} do not apply here. | |
1030 | * This command processes KVM tracepoints from host only | |
1031 | */ | |
e5cadb93 | 1032 | evlist__for_each_entry(evlist, pos) { |
1fc632ce | 1033 | struct perf_event_attr *attr = &pos->core.attr; |
1afe1d14 DA |
1034 | |
1035 | /* make sure these *are* set */ | |
e71aa283 AH |
1036 | perf_evsel__set_sample_bit(pos, TID); |
1037 | perf_evsel__set_sample_bit(pos, TIME); | |
1038 | perf_evsel__set_sample_bit(pos, CPU); | |
1039 | perf_evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 1040 | /* make sure these are *not*; want as small a sample as possible */ |
e71aa283 AH |
1041 | perf_evsel__reset_sample_bit(pos, PERIOD); |
1042 | perf_evsel__reset_sample_bit(pos, IP); | |
1043 | perf_evsel__reset_sample_bit(pos, CALLCHAIN); | |
1044 | perf_evsel__reset_sample_bit(pos, ADDR); | |
1045 | perf_evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1046 | attr->mmap = 0; |
1047 | attr->comm = 0; | |
1048 | attr->task = 0; | |
1049 | ||
1050 | attr->sample_period = 1; | |
1051 | ||
1052 | attr->watermark = 0; | |
1053 | attr->wakeup_events = 1000; | |
1054 | ||
1055 | /* will enable all once we are ready */ | |
1056 | attr->disabled = 1; | |
1057 | } | |
1058 | ||
474ddc4c | 1059 | err = evlist__open(evlist); |
1afe1d14 | 1060 | if (err < 0) { |
f9f33fdb | 1061 | printf("Couldn't create the events: %s\n", |
c8b5f2c9 | 1062 | str_error_r(errno, sbuf, sizeof(sbuf))); |
1afe1d14 | 1063 | goto out; |
bcf6edcd XG |
1064 | } |
1065 | ||
9521b5f2 | 1066 | if (evlist__mmap(evlist, kvm->opts.mmap_pages) < 0) { |
f9f33fdb | 1067 | ui__error("Failed to mmap the events: %s\n", |
c8b5f2c9 | 1068 | str_error_r(errno, sbuf, sizeof(sbuf))); |
750b4ede | 1069 | evlist__close(evlist); |
1afe1d14 DA |
1070 | goto out; |
1071 | } | |
1072 | ||
1073 | rc = 0; | |
1074 | ||
1075 | out: | |
1076 | return rc; | |
bcf6edcd | 1077 | } |
87419c9a | 1078 | #endif |
bcf6edcd | 1079 | |
3786063a | 1080 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1081 | { |
bcf6edcd XG |
1082 | int ret; |
1083 | ||
de332ac4 DA |
1084 | struct perf_tool eops = { |
1085 | .sample = process_sample_event, | |
1086 | .comm = perf_event__process_comm, | |
f3b3614a | 1087 | .namespaces = perf_event__process_namespaces, |
0a8cb85c | 1088 | .ordered_events = true, |
de332ac4 | 1089 | }; |
8ceb41d7 | 1090 | struct perf_data file = { |
2d4f2799 JO |
1091 | .path = kvm->file_name, |
1092 | .mode = PERF_DATA_MODE_READ, | |
1093 | .force = kvm->force, | |
f5fc1412 | 1094 | }; |
de332ac4 DA |
1095 | |
1096 | kvm->tool = eops; | |
f5fc1412 | 1097 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
6ef81c55 | 1098 | if (IS_ERR(kvm->session)) { |
bcf6edcd | 1099 | pr_err("Initializing perf session failed\n"); |
6ef81c55 | 1100 | return PTR_ERR(kvm->session); |
bcf6edcd XG |
1101 | } |
1102 | ||
0a7e6d1b | 1103 | symbol__init(&kvm->session->header.env); |
14d37f38 | 1104 | |
41b98360 TS |
1105 | if (!perf_session__has_traces(kvm->session, "kvm record")) { |
1106 | ret = -EINVAL; | |
1107 | goto out_delete; | |
1108 | } | |
bcf6edcd XG |
1109 | |
1110 | /* | |
1111 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1112 | * traced in the old kernel. | |
1113 | */ | |
1afe1d14 | 1114 | ret = cpu_isa_config(kvm); |
bcf6edcd | 1115 | if (ret < 0) |
41b98360 TS |
1116 | goto out_delete; |
1117 | ||
1118 | ret = perf_session__process_events(kvm->session); | |
bcf6edcd | 1119 | |
41b98360 TS |
1120 | out_delete: |
1121 | perf_session__delete(kvm->session); | |
1122 | return ret; | |
bcf6edcd XG |
1123 | } |
1124 | ||
2e73f00f DA |
1125 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1126 | { | |
3ae4a76a AY |
1127 | if (kvm->opts.target.pid) { |
1128 | kvm->pid_list = intlist__new(kvm->opts.target.pid); | |
2e73f00f DA |
1129 | if (kvm->pid_list == NULL) { |
1130 | pr_err("Error parsing process id string\n"); | |
1131 | return -EINVAL; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | return 0; | |
1136 | } | |
1137 | ||
3786063a | 1138 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1139 | { |
1140 | int ret = -EINVAL; | |
de332ac4 | 1141 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1142 | |
2e73f00f DA |
1143 | if (parse_target_str(kvm) != 0) |
1144 | goto exit; | |
1145 | ||
bcf6edcd XG |
1146 | if (!verify_vcpu(vcpu)) |
1147 | goto exit; | |
1148 | ||
de332ac4 | 1149 | if (!select_key(kvm)) |
bcf6edcd XG |
1150 | goto exit; |
1151 | ||
de332ac4 | 1152 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1153 | goto exit; |
1154 | ||
de332ac4 | 1155 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1156 | setup_pager(); |
1157 | ||
de332ac4 | 1158 | ret = read_events(kvm); |
bcf6edcd XG |
1159 | if (ret) |
1160 | goto exit; | |
1161 | ||
de332ac4 DA |
1162 | sort_result(kvm); |
1163 | print_result(kvm); | |
1164 | ||
bcf6edcd XG |
1165 | exit: |
1166 | return ret; | |
1167 | } | |
1168 | ||
bcf6edcd XG |
1169 | #define STRDUP_FAIL_EXIT(s) \ |
1170 | ({ char *_p; \ | |
1171 | _p = strdup(s); \ | |
1172 | if (!_p) \ | |
1173 | return -ENOMEM; \ | |
1174 | _p; \ | |
1175 | }) | |
1176 | ||
066d3593 HK |
1177 | int __weak setup_kvm_events_tp(struct perf_kvm_stat *kvm __maybe_unused) |
1178 | { | |
1179 | return 0; | |
1180 | } | |
1181 | ||
3786063a XG |
1182 | static int |
1183 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd | 1184 | { |
9daa8123 | 1185 | unsigned int rec_argc, i, j, events_tp_size; |
bcf6edcd | 1186 | const char **rec_argv; |
8fdd84c4 DA |
1187 | const char * const record_args[] = { |
1188 | "record", | |
1189 | "-R", | |
8fdd84c4 DA |
1190 | "-m", "1024", |
1191 | "-c", "1", | |
1192 | }; | |
f45d20ff NK |
1193 | const char * const kvm_stat_record_usage[] = { |
1194 | "perf kvm stat record [<options>]", | |
1195 | NULL | |
1196 | }; | |
9daa8123 | 1197 | const char * const *events_tp; |
066d3593 HK |
1198 | int ret; |
1199 | ||
9daa8123 | 1200 | events_tp_size = 0; |
066d3593 HK |
1201 | ret = setup_kvm_events_tp(kvm); |
1202 | if (ret < 0) { | |
1203 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1204 | return ret; | |
1205 | } | |
9daa8123 AY |
1206 | |
1207 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) | |
1208 | events_tp_size++; | |
bcf6edcd | 1209 | |
8fdd84c4 | 1210 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
9daa8123 | 1211 | 2 * events_tp_size; |
bcf6edcd XG |
1212 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1213 | ||
1214 | if (rec_argv == NULL) | |
1215 | return -ENOMEM; | |
1216 | ||
1217 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1218 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1219 | ||
9daa8123 | 1220 | for (j = 0; j < events_tp_size; j++) { |
8fdd84c4 DA |
1221 | rec_argv[i++] = "-e"; |
1222 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1223 | } | |
1224 | ||
bcf6edcd | 1225 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1226 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1227 | |
1228 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1229 | rec_argv[i] = argv[j]; | |
1230 | ||
f45d20ff NK |
1231 | set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); |
1232 | set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); | |
1233 | set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); | |
1234 | ||
1235 | set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); | |
1236 | set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); | |
1237 | set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); | |
1238 | set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); | |
1239 | set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); | |
1240 | set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); | |
1241 | set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); | |
1242 | set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); | |
1243 | set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); | |
1244 | set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); | |
1245 | set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); | |
1246 | set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); | |
1247 | set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); | |
1248 | set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); | |
1249 | set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); | |
1250 | ||
1251 | record_usage = kvm_stat_record_usage; | |
b0ad8ea6 | 1252 | return cmd_record(i, rec_argv); |
bcf6edcd XG |
1253 | } |
1254 | ||
3786063a XG |
1255 | static int |
1256 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1257 | { |
1258 | const struct option kvm_events_report_options[] = { | |
1259 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
3be8e2a0 AY |
1260 | "event for reporting: vmexit, " |
1261 | "mmio (x86 only), ioport (x86 only)"), | |
de332ac4 DA |
1262 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1263 | "vcpu id to report"), | |
1264 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1265 | "key for sorting: sample(sort by samples number)" | |
1266 | " time (sort by avg time)"), | |
3ae4a76a | 1267 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", |
2e73f00f | 1268 | "analyze events only for given process id(s)"), |
8cc5ec1f | 1269 | OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), |
de332ac4 DA |
1270 | OPT_END() |
1271 | }; | |
bcf6edcd | 1272 | |
de332ac4 DA |
1273 | const char * const kvm_events_report_usage[] = { |
1274 | "perf kvm stat report [<options>]", | |
1275 | NULL | |
1276 | }; | |
bcf6edcd | 1277 | |
bcf6edcd XG |
1278 | if (argc) { |
1279 | argc = parse_options(argc, argv, | |
1280 | kvm_events_report_options, | |
1281 | kvm_events_report_usage, 0); | |
1282 | if (argc) | |
1283 | usage_with_options(kvm_events_report_usage, | |
1284 | kvm_events_report_options); | |
1285 | } | |
1286 | ||
f181957c AY |
1287 | if (!kvm->opts.target.pid) |
1288 | kvm->opts.target.system_wide = true; | |
1289 | ||
de332ac4 | 1290 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1291 | } |
1292 | ||
87419c9a | 1293 | #ifdef HAVE_TIMERFD_SUPPORT |
63503dba | 1294 | static struct evlist *kvm_live_event_list(void) |
1afe1d14 | 1295 | { |
63503dba | 1296 | struct evlist *evlist; |
1afe1d14 | 1297 | char *tp, *name, *sys; |
1afe1d14 | 1298 | int err = -1; |
9daa8123 | 1299 | const char * const *events_tp; |
1afe1d14 | 1300 | |
0f98b11c | 1301 | evlist = evlist__new(); |
1afe1d14 DA |
1302 | if (evlist == NULL) |
1303 | return NULL; | |
1304 | ||
9daa8123 | 1305 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) { |
1afe1d14 | 1306 | |
9daa8123 | 1307 | tp = strdup(*events_tp); |
1afe1d14 DA |
1308 | if (tp == NULL) |
1309 | goto out; | |
1310 | ||
1311 | /* split tracepoint into subsystem and name */ | |
1312 | sys = tp; | |
1313 | name = strchr(tp, ':'); | |
1314 | if (name == NULL) { | |
1315 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
9daa8123 | 1316 | *events_tp); |
1afe1d14 DA |
1317 | free(tp); |
1318 | goto out; | |
1319 | } | |
1320 | *name = '\0'; | |
1321 | name++; | |
1322 | ||
1323 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
9daa8123 | 1324 | pr_err("Failed to add %s tracepoint to the list\n", *events_tp); |
1afe1d14 DA |
1325 | free(tp); |
1326 | goto out; | |
1327 | } | |
1328 | ||
1329 | free(tp); | |
1330 | } | |
1331 | ||
1332 | err = 0; | |
1333 | ||
1334 | out: | |
1335 | if (err) { | |
c12995a5 | 1336 | evlist__delete(evlist); |
1afe1d14 DA |
1337 | evlist = NULL; |
1338 | } | |
1339 | ||
1340 | return evlist; | |
1341 | } | |
1342 | ||
1343 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1344 | int argc, const char **argv) | |
1345 | { | |
1346 | char errbuf[BUFSIZ]; | |
1347 | int err; | |
1348 | ||
1349 | const struct option live_options[] = { | |
1350 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1351 | "record events on existing process id"), | |
994a1f78 JO |
1352 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
1353 | "number of mmap data pages", | |
1354 | perf_evlist__parse_mmap_pages), | |
1afe1d14 DA |
1355 | OPT_INCR('v', "verbose", &verbose, |
1356 | "be more verbose (show counter open errors, etc)"), | |
1357 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1358 | "system-wide collection from all CPUs"), | |
1359 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1360 | "time in seconds between display updates"), | |
1361 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
99d348a8 AY |
1362 | "event for reporting: " |
1363 | "vmexit, mmio (x86 only), ioport (x86 only)"), | |
1afe1d14 DA |
1364 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1365 | "vcpu id to report"), | |
1366 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1367 | "key for sorting: sample(sort by samples number)" | |
1368 | " time (sort by avg time)"), | |
70f7b4a7 | 1369 | OPT_U64(0, "duration", &kvm->duration, |
3be8e2a0 AY |
1370 | "show events other than" |
1371 | " HLT (x86 only) or Wait state (s390 only)" | |
1372 | " that take longer than duration usecs"), | |
3fcb10e4 | 1373 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 1374 | "per thread proc mmap processing timeout in ms"), |
1afe1d14 DA |
1375 | OPT_END() |
1376 | }; | |
1377 | const char * const live_usage[] = { | |
1378 | "perf kvm stat live [<options>]", | |
1379 | NULL | |
1380 | }; | |
8ceb41d7 | 1381 | struct perf_data data = { |
f5fc1412 JO |
1382 | .mode = PERF_DATA_MODE_WRITE, |
1383 | }; | |
1afe1d14 DA |
1384 | |
1385 | ||
1386 | /* event handling */ | |
1387 | kvm->tool.sample = process_sample_event; | |
1388 | kvm->tool.comm = perf_event__process_comm; | |
1389 | kvm->tool.exit = perf_event__process_exit; | |
1390 | kvm->tool.fork = perf_event__process_fork; | |
1391 | kvm->tool.lost = process_lost_event; | |
f3b3614a | 1392 | kvm->tool.namespaces = perf_event__process_namespaces; |
0a8cb85c | 1393 | kvm->tool.ordered_events = true; |
1afe1d14 DA |
1394 | perf_tool__fill_defaults(&kvm->tool); |
1395 | ||
1396 | /* set defaults */ | |
1397 | kvm->display_time = 1; | |
1398 | kvm->opts.user_interval = 1; | |
1399 | kvm->opts.mmap_pages = 512; | |
1400 | kvm->opts.target.uses_mmap = false; | |
1401 | kvm->opts.target.uid_str = NULL; | |
1402 | kvm->opts.target.uid = UINT_MAX; | |
1403 | ||
0a7e6d1b | 1404 | symbol__init(NULL); |
1afe1d14 DA |
1405 | disable_buildid_cache(); |
1406 | ||
1407 | use_browser = 0; | |
1afe1d14 DA |
1408 | |
1409 | if (argc) { | |
1410 | argc = parse_options(argc, argv, live_options, | |
1411 | live_usage, 0); | |
1412 | if (argc) | |
1413 | usage_with_options(live_usage, live_options); | |
1414 | } | |
1415 | ||
70f7b4a7 DA |
1416 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1417 | ||
1afe1d14 DA |
1418 | /* |
1419 | * target related setups | |
1420 | */ | |
602ad878 | 1421 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1422 | if (err) { |
602ad878 | 1423 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1424 | ui__warning("%s", errbuf); |
1425 | } | |
1426 | ||
602ad878 | 1427 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1428 | kvm->opts.target.system_wide = true; |
1429 | ||
1430 | ||
1431 | /* | |
1432 | * generate the event list | |
1433 | */ | |
066d3593 HK |
1434 | err = setup_kvm_events_tp(kvm); |
1435 | if (err < 0) { | |
1436 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1437 | return err; | |
1438 | } | |
1439 | ||
1afe1d14 DA |
1440 | kvm->evlist = kvm_live_event_list(); |
1441 | if (kvm->evlist == NULL) { | |
1442 | err = -1; | |
1443 | goto out; | |
1444 | } | |
1445 | ||
1afe1d14 DA |
1446 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) |
1447 | usage_with_options(live_usage, live_options); | |
1448 | ||
1449 | /* | |
1450 | * perf session | |
1451 | */ | |
8ceb41d7 | 1452 | kvm->session = perf_session__new(&data, false, &kvm->tool); |
6ef81c55 MI |
1453 | if (IS_ERR(kvm->session)) { |
1454 | err = PTR_ERR(kvm->session); | |
1afe1d14 DA |
1455 | goto out; |
1456 | } | |
1457 | kvm->session->evlist = kvm->evlist; | |
1458 | perf_session__set_id_hdr_size(kvm->session); | |
673d659f | 1459 | ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); |
a33fbd56 | 1460 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
03617c22 | 1461 | kvm->evlist->core.threads, false, 1); |
1afe1d14 DA |
1462 | err = kvm_live_open_events(kvm); |
1463 | if (err) | |
1464 | goto out; | |
1465 | ||
1466 | err = kvm_events_live_report(kvm); | |
1467 | ||
1468 | out: | |
e1446551 | 1469 | perf_session__delete(kvm->session); |
1afe1d14 | 1470 | kvm->session = NULL; |
c12995a5 | 1471 | evlist__delete(kvm->evlist); |
1afe1d14 DA |
1472 | |
1473 | return err; | |
1474 | } | |
87419c9a | 1475 | #endif |
1afe1d14 | 1476 | |
bcf6edcd XG |
1477 | static void print_kvm_stat_usage(void) |
1478 | { | |
1479 | printf("Usage: perf kvm stat <command>\n\n"); | |
1480 | ||
1481 | printf("# Available commands:\n"); | |
1482 | printf("\trecord: record kvm events\n"); | |
1483 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1484 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1485 | |
1486 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1487 | } | |
1488 | ||
3786063a | 1489 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1490 | { |
3786063a XG |
1491 | struct perf_kvm_stat kvm = { |
1492 | .file_name = file_name, | |
1493 | ||
1494 | .trace_vcpu = -1, | |
1495 | .report_event = "vmexit", | |
1496 | .sort_key = "sample", | |
1497 | ||
3786063a XG |
1498 | }; |
1499 | ||
bcf6edcd XG |
1500 | if (argc == 1) { |
1501 | print_kvm_stat_usage(); | |
1502 | goto perf_stat; | |
1503 | } | |
1504 | ||
1505 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1506 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1507 | |
1508 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1509 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1510 | |
87419c9a | 1511 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1512 | if (!strncmp(argv[1], "live", 4)) |
1513 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1514 | #endif |
1afe1d14 | 1515 | |
bcf6edcd | 1516 | perf_stat: |
b0ad8ea6 | 1517 | return cmd_stat(argc, argv); |
bcf6edcd | 1518 | } |
da50ad69 | 1519 | #endif /* HAVE_KVM_STAT_SUPPORT */ |
bcf6edcd | 1520 | |
124eb5f8 AS |
1521 | int __weak kvm_add_default_arch_event(int *argc __maybe_unused, |
1522 | const char **argv __maybe_unused) | |
1523 | { | |
1524 | return 0; | |
1525 | } | |
1526 | ||
3786063a | 1527 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 | 1528 | { |
124eb5f8 | 1529 | int rec_argc, i = 0, j, ret; |
a1645ce1 ZY |
1530 | const char **rec_argv; |
1531 | ||
124eb5f8 AS |
1532 | ret = kvm_add_default_arch_event(&argc, argv); |
1533 | if (ret) | |
1534 | return -EINVAL; | |
1535 | ||
a1645ce1 ZY |
1536 | rec_argc = argc + 2; |
1537 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1538 | rec_argv[i++] = strdup("record"); | |
1539 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1540 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1541 | for (j = 1; j < argc; j++, i++) |
1542 | rec_argv[i] = argv[j]; | |
1543 | ||
1544 | BUG_ON(i != rec_argc); | |
1545 | ||
b0ad8ea6 | 1546 | return cmd_record(i, rec_argv); |
a1645ce1 ZY |
1547 | } |
1548 | ||
3786063a | 1549 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1550 | { |
1551 | int rec_argc, i = 0, j; | |
1552 | const char **rec_argv; | |
1553 | ||
1554 | rec_argc = argc + 2; | |
1555 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1556 | rec_argv[i++] = strdup("report"); | |
1557 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1558 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1559 | for (j = 1; j < argc; j++, i++) |
1560 | rec_argv[i] = argv[j]; | |
1561 | ||
1562 | BUG_ON(i != rec_argc); | |
1563 | ||
b0ad8ea6 | 1564 | return cmd_report(i, rec_argv); |
a1645ce1 ZY |
1565 | } |
1566 | ||
3786063a XG |
1567 | static int |
1568 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1569 | { |
1570 | int rec_argc, i = 0, j; | |
1571 | const char **rec_argv; | |
1572 | ||
1573 | rec_argc = argc + 2; | |
1574 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1575 | rec_argv[i++] = strdup("buildid-list"); | |
1576 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1577 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1578 | for (j = 1; j < argc; j++, i++) |
1579 | rec_argv[i] = argv[j]; | |
1580 | ||
1581 | BUG_ON(i != rec_argc); | |
1582 | ||
b0ad8ea6 | 1583 | return cmd_buildid_list(i, rec_argv); |
a1645ce1 ZY |
1584 | } |
1585 | ||
b0ad8ea6 | 1586 | int cmd_kvm(int argc, const char **argv) |
a1645ce1 | 1587 | { |
20914ce5 | 1588 | const char *file_name = NULL; |
de332ac4 | 1589 | const struct option kvm_options[] = { |
3786063a | 1590 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1591 | "Input file name"), |
3786063a | 1592 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1593 | "Output file name"), |
1594 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1595 | "Collect guest os data"), | |
1596 | OPT_BOOLEAN(0, "host", &perf_host, | |
1597 | "Collect host os data"), | |
1598 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1599 | "guest mount directory under which every guest os" | |
1600 | " instance has a subdir"), | |
1601 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1602 | "file", "file saving guest os vmlinux"), | |
1603 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1604 | "file", "file saving guest os /proc/kallsyms"), | |
1605 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1606 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1607 | OPT_INCR('v', "verbose", &verbose, |
1608 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1609 | OPT_END() |
1610 | }; | |
1611 | ||
09a71b97 RR |
1612 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1613 | "buildid-list", "stat", NULL }; | |
1614 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1615 | |
1aed2671 JR |
1616 | perf_host = 0; |
1617 | perf_guest = 1; | |
a1645ce1 | 1618 | |
09a71b97 RR |
1619 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1620 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1621 | if (!argc) |
1622 | usage_with_options(kvm_usage, kvm_options); | |
1623 | ||
1624 | if (!perf_host) | |
1625 | perf_guest = 1; | |
1626 | ||
3786063a | 1627 | if (!file_name) { |
e1a2b174 | 1628 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1629 | |
3786063a | 1630 | if (!file_name) { |
de332ac4 DA |
1631 | pr_err("Failed to allocate memory for filename\n"); |
1632 | return -ENOMEM; | |
1633 | } | |
a1645ce1 ZY |
1634 | } |
1635 | ||
1636 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1637 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1638 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1639 | return __cmd_report(file_name, argc, argv); |
a1645ce1 | 1640 | else if (!strncmp(argv[0], "diff", 4)) |
b0ad8ea6 | 1641 | return cmd_diff(argc, argv); |
a1645ce1 | 1642 | else if (!strncmp(argv[0], "top", 3)) |
b0ad8ea6 | 1643 | return cmd_top(argc, argv); |
a1645ce1 | 1644 | else if (!strncmp(argv[0], "buildid-list", 12)) |
3786063a | 1645 | return __cmd_buildid_list(file_name, argc, argv); |
da50ad69 | 1646 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 1647 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1648 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1649 | #endif |
a1645ce1 ZY |
1650 | else |
1651 | usage_with_options(kvm_usage, kvm_options); | |
1652 | ||
1653 | return 0; | |
1654 | } |