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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; | |
efc0cdc9 | 72 | key->key = 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 | ||
efc0cdc9 | 419 | vcpu_record->vcpu_id = evsel__intval(evsel, sample, vcpu_id_str); |
69e865c3 | 420 | thread__set_priv(thread, vcpu_record); |
bcf6edcd XG |
421 | } |
422 | ||
69e865c3 | 423 | return thread__priv(thread); |
bcf6edcd XG |
424 | } |
425 | ||
3786063a | 426 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 427 | struct thread *thread, |
32dcd021 | 428 | struct evsel *evsel, |
14907e73 | 429 | struct perf_sample *sample) |
bcf6edcd XG |
430 | { |
431 | struct vcpu_event_record *vcpu_record; | |
3be8e2a0 AY |
432 | struct event_key key = { .key = INVALID_KEY, |
433 | .exit_reasons = kvm->exit_reasons }; | |
bcf6edcd | 434 | |
14907e73 | 435 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
436 | if (!vcpu_record) |
437 | return true; | |
438 | ||
2aa8eab0 DA |
439 | /* only process events for vcpus user cares about */ |
440 | if ((kvm->trace_vcpu != -1) && | |
441 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
442 | return true; | |
443 | ||
de332ac4 DA |
444 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
445 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 446 | |
3be8e2a0 AY |
447 | if (is_child_event(kvm, evsel, sample, &key)) |
448 | return handle_child_event(kvm, vcpu_record, &key, sample); | |
449 | ||
de332ac4 | 450 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 451 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
452 | |
453 | return true; | |
454 | } | |
455 | ||
bcf6edcd XG |
456 | #define GET_EVENT_KEY(func, field) \ |
457 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
458 | { \ | |
459 | if (vcpu == -1) \ | |
460 | return event->total.field; \ | |
461 | \ | |
462 | if (vcpu >= event->max_vcpu) \ | |
463 | return 0; \ | |
464 | \ | |
465 | return event->vcpu[vcpu].field; \ | |
466 | } | |
467 | ||
468 | #define COMPARE_EVENT_KEY(func, field) \ | |
469 | GET_EVENT_KEY(func, field) \ | |
470 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
471 | struct kvm_event *two, int vcpu)\ | |
472 | { \ | |
473 | return get_event_ ##func(one, vcpu) > \ | |
474 | get_event_ ##func(two, vcpu); \ | |
475 | } | |
476 | ||
477 | GET_EVENT_KEY(time, time); | |
478 | COMPARE_EVENT_KEY(count, stats.n); | |
479 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
480 | GET_EVENT_KEY(max, stats.max); |
481 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
482 | |
483 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
484 | { #name, compare_kvm_event_ ## compare_key } | |
485 | ||
486 | static struct kvm_event_key keys[] = { | |
487 | DEF_SORT_NAME_KEY(sample, count), | |
488 | DEF_SORT_NAME_KEY(time, mean), | |
489 | { NULL, NULL } | |
490 | }; | |
491 | ||
3786063a | 492 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
493 | { |
494 | int i; | |
495 | ||
496 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
497 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
498 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
499 | return true; |
500 | } | |
501 | } | |
502 | ||
de332ac4 | 503 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
504 | return false; |
505 | } | |
506 | ||
de332ac4 DA |
507 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
508 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 509 | { |
de332ac4 | 510 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
511 | struct rb_node *parent = NULL; |
512 | struct kvm_event *p; | |
513 | ||
514 | while (*rb) { | |
515 | p = container_of(*rb, struct kvm_event, rb); | |
516 | parent = *rb; | |
517 | ||
518 | if (bigger(event, p, vcpu)) | |
519 | rb = &(*rb)->rb_left; | |
520 | else | |
521 | rb = &(*rb)->rb_right; | |
522 | } | |
523 | ||
524 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 525 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
526 | } |
527 | ||
3786063a XG |
528 | static void |
529 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 530 | { |
de332ac4 DA |
531 | int vcpu = kvm->trace_vcpu; |
532 | ||
533 | kvm->total_count += get_event_count(event, vcpu); | |
534 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
535 | } |
536 | ||
537 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
538 | { | |
539 | return !!get_event_count(event, vcpu); | |
540 | } | |
541 | ||
3786063a | 542 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
543 | { |
544 | unsigned int i; | |
de332ac4 | 545 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
546 | struct kvm_event *event; |
547 | ||
355afe81 DA |
548 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
549 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 550 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
551 | update_total_count(kvm, event); |
552 | insert_to_result(&kvm->result, event, | |
553 | kvm->compare, vcpu); | |
bcf6edcd | 554 | } |
355afe81 DA |
555 | } |
556 | } | |
bcf6edcd XG |
557 | } |
558 | ||
559 | /* returns left most element of result, and erase it */ | |
de332ac4 | 560 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 561 | { |
de332ac4 | 562 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
563 | |
564 | if (!node) | |
565 | return NULL; | |
566 | ||
de332ac4 | 567 | rb_erase(node, result); |
bcf6edcd XG |
568 | return container_of(node, struct kvm_event, rb); |
569 | } | |
570 | ||
1afe1d14 | 571 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 572 | { |
1afe1d14 DA |
573 | int vcpu = kvm->trace_vcpu; |
574 | ||
bcf6edcd XG |
575 | pr_info("Analyze events for "); |
576 | ||
1f3e5b55 AY |
577 | if (kvm->opts.target.system_wide) |
578 | pr_info("all VMs, "); | |
579 | else if (kvm->opts.target.pid) | |
580 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
581 | else | |
582 | pr_info("dazed and confused on what is monitored, "); | |
1afe1d14 | 583 | |
bcf6edcd XG |
584 | if (vcpu == -1) |
585 | pr_info("all VCPUs:\n\n"); | |
586 | else | |
587 | pr_info("VCPU %d:\n\n", vcpu); | |
588 | } | |
589 | ||
1afe1d14 DA |
590 | static void show_timeofday(void) |
591 | { | |
592 | char date[64]; | |
593 | struct timeval tv; | |
594 | struct tm ltime; | |
595 | ||
596 | gettimeofday(&tv, NULL); | |
597 | if (localtime_r(&tv.tv_sec, <ime)) { | |
598 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
599 | pr_info("%s.%06ld", date, tv.tv_usec); | |
600 | } else | |
601 | pr_info("00:00:00.000000"); | |
602 | ||
603 | return; | |
604 | } | |
605 | ||
3786063a | 606 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd | 607 | { |
162607ea | 608 | char decode[decode_str_len]; |
bcf6edcd | 609 | struct kvm_event *event; |
de332ac4 | 610 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 611 | |
1afe1d14 DA |
612 | if (kvm->live) { |
613 | puts(CONSOLE_CLEAR); | |
614 | show_timeofday(); | |
615 | } | |
616 | ||
bcf6edcd | 617 | pr_info("\n\n"); |
1afe1d14 | 618 | print_vcpu_info(kvm); |
162607ea | 619 | pr_info("%*s ", decode_str_len, kvm->events_ops->name); |
bcf6edcd XG |
620 | pr_info("%10s ", "Samples"); |
621 | pr_info("%9s ", "Samples%"); | |
622 | ||
623 | pr_info("%9s ", "Time%"); | |
b048a24c CB |
624 | pr_info("%11s ", "Min Time"); |
625 | pr_info("%11s ", "Max Time"); | |
bcf6edcd XG |
626 | pr_info("%16s ", "Avg time"); |
627 | pr_info("\n\n"); | |
628 | ||
de332ac4 | 629 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 630 | u64 ecount, etime, max, min; |
bcf6edcd XG |
631 | |
632 | ecount = get_event_count(event, vcpu); | |
633 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
634 | max = get_event_max(event, vcpu); |
635 | min = get_event_min(event, vcpu); | |
bcf6edcd | 636 | |
de332ac4 | 637 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
162607ea | 638 | pr_info("%*s ", decode_str_len, decode); |
bcf6edcd | 639 | pr_info("%10llu ", (unsigned long long)ecount); |
de332ac4 DA |
640 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
641 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
c05a6e14 ACM |
642 | pr_info("%9.2fus ", (double)min / NSEC_PER_USEC); |
643 | pr_info("%9.2fus ", (double)max / NSEC_PER_USEC); | |
644 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount / NSEC_PER_USEC, | |
bcf6edcd XG |
645 | kvm_event_rel_stddev(vcpu, event)); |
646 | pr_info("\n"); | |
647 | } | |
648 | ||
e4f7637f | 649 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
c05a6e14 | 650 | kvm->total_count, kvm->total_time / (double)NSEC_PER_USEC); |
1afe1d14 DA |
651 | |
652 | if (kvm->lost_events) | |
653 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
654 | } | |
655 | ||
87419c9a | 656 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
657 | static int process_lost_event(struct perf_tool *tool, |
658 | union perf_event *event __maybe_unused, | |
659 | struct perf_sample *sample __maybe_unused, | |
660 | struct machine *machine __maybe_unused) | |
661 | { | |
662 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
663 | ||
664 | kvm->lost_events++; | |
665 | return 0; | |
bcf6edcd | 666 | } |
87419c9a | 667 | #endif |
bcf6edcd | 668 | |
2e73f00f DA |
669 | static bool skip_sample(struct perf_kvm_stat *kvm, |
670 | struct perf_sample *sample) | |
671 | { | |
672 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
673 | return true; | |
674 | ||
675 | return false; | |
676 | } | |
677 | ||
de332ac4 | 678 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
679 | union perf_event *event, |
680 | struct perf_sample *sample, | |
32dcd021 | 681 | struct evsel *evsel, |
bcf6edcd XG |
682 | struct machine *machine) |
683 | { | |
b91fc39f | 684 | int err = 0; |
2e73f00f | 685 | struct thread *thread; |
3786063a XG |
686 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
687 | tool); | |
bcf6edcd | 688 | |
2e73f00f DA |
689 | if (skip_sample(kvm, sample)) |
690 | return 0; | |
691 | ||
314add6b | 692 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
693 | if (thread == NULL) { |
694 | pr_debug("problem processing %d event, skipping it.\n", | |
695 | event->header.type); | |
696 | return -1; | |
697 | } | |
698 | ||
de332ac4 | 699 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
b91fc39f | 700 | err = -1; |
bcf6edcd | 701 | |
b91fc39f ACM |
702 | thread__put(thread); |
703 | return err; | |
bcf6edcd XG |
704 | } |
705 | ||
1afe1d14 | 706 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 707 | { |
f67001a4 | 708 | char buf[128], *cpuid; |
65c647a6 | 709 | int err; |
1afe1d14 DA |
710 | |
711 | if (kvm->live) { | |
712 | err = get_cpuid(buf, sizeof(buf)); | |
713 | if (err != 0) { | |
f67001a4 ACM |
714 | pr_err("Failed to look up CPU type: %s\n", |
715 | str_error_r(err, buf, sizeof(buf))); | |
716 | return -err; | |
1afe1d14 DA |
717 | } |
718 | cpuid = buf; | |
719 | } else | |
720 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 721 | |
65c647a6 AY |
722 | if (!cpuid) { |
723 | pr_err("Failed to look up CPU type\n"); | |
724 | return -EINVAL; | |
1afe1d14 DA |
725 | } |
726 | ||
65c647a6 AY |
727 | err = cpu_isa_init(kvm, cpuid); |
728 | if (err == -ENOTSUP) | |
729 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 | 730 | |
65c647a6 | 731 | return err; |
1afe1d14 DA |
732 | } |
733 | ||
734 | static bool verify_vcpu(int vcpu) | |
735 | { | |
736 | if (vcpu != -1 && vcpu < 0) { | |
737 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
738 | return false; | |
739 | } | |
740 | ||
741 | return true; | |
742 | } | |
743 | ||
87419c9a | 744 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
745 | /* keeping the max events to a modest level to keep |
746 | * the processing of samples per mmap smooth. | |
747 | */ | |
748 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
749 | ||
750 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
751 | u64 *mmap_time) | |
752 | { | |
63503dba | 753 | struct evlist *evlist = kvm->evlist; |
1afe1d14 | 754 | union perf_event *event; |
a5830532 | 755 | struct mmap *md; |
93d10af2 | 756 | u64 timestamp; |
1afe1d14 DA |
757 | s64 n = 0; |
758 | int err; | |
759 | ||
760 | *mmap_time = ULLONG_MAX; | |
53172f90 | 761 | md = &evlist->mmap[idx]; |
7c4d4182 | 762 | err = perf_mmap__read_init(&md->core); |
53172f90 KL |
763 | if (err < 0) |
764 | return (err == -EAGAIN) ? 0 : -1; | |
765 | ||
151ed5d7 | 766 | while ((event = perf_mmap__read_event(&md->core)) != NULL) { |
2a6599cd | 767 | err = evlist__parse_sample_timestamp(evlist, event, ×tamp); |
1afe1d14 | 768 | if (err) { |
7728fa0c | 769 | perf_mmap__consume(&md->core); |
1afe1d14 DA |
770 | pr_err("Failed to parse sample\n"); |
771 | return -1; | |
772 | } | |
773 | ||
93d10af2 | 774 | err = perf_session__queue_event(kvm->session, event, timestamp, 0); |
8e50d384 | 775 | /* |
b7b61cbe | 776 | * FIXME: Here we can't consume the event, as perf_session__queue_event will |
8e50d384 ZZ |
777 | * point to it, and it'll get possibly overwritten by the kernel. |
778 | */ | |
7728fa0c | 779 | perf_mmap__consume(&md->core); |
8e50d384 | 780 | |
1afe1d14 DA |
781 | if (err) { |
782 | pr_err("Failed to enqueue sample: %d\n", err); | |
783 | return -1; | |
784 | } | |
785 | ||
786 | /* save time stamp of our first sample for this mmap */ | |
787 | if (n == 0) | |
93d10af2 | 788 | *mmap_time = timestamp; |
1afe1d14 DA |
789 | |
790 | /* limit events per mmap handled all at once */ | |
791 | n++; | |
792 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
793 | break; | |
794 | } | |
795 | ||
32fdc2ca | 796 | perf_mmap__read_done(&md->core); |
1afe1d14 DA |
797 | return n; |
798 | } | |
799 | ||
800 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
801 | { | |
802 | int i, err, throttled = 0; | |
803 | s64 n, ntotal = 0; | |
804 | u64 flush_time = ULLONG_MAX, mmap_time; | |
805 | ||
c976ee11 | 806 | for (i = 0; i < kvm->evlist->core.nr_mmaps; i++) { |
1afe1d14 DA |
807 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); |
808 | if (n < 0) | |
809 | return -1; | |
810 | ||
811 | /* flush time is going to be the minimum of all the individual | |
812 | * mmap times. Essentially, we flush all the samples queued up | |
813 | * from the last pass under our minimal start time -- that leaves | |
814 | * a very small race for samples to come in with a lower timestamp. | |
815 | * The ioctl to return the perf_clock timestamp should close the | |
816 | * race entirely. | |
817 | */ | |
818 | if (mmap_time < flush_time) | |
819 | flush_time = mmap_time; | |
820 | ||
821 | ntotal += n; | |
822 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
823 | throttled = 1; | |
824 | } | |
825 | ||
826 | /* flush queue after each round in which we processed events */ | |
827 | if (ntotal) { | |
d704ebda ACM |
828 | struct ordered_events *oe = &kvm->session->ordered_events; |
829 | ||
830 | oe->next_flush = flush_time; | |
831 | err = ordered_events__flush(oe, OE_FLUSH__ROUND); | |
1afe1d14 DA |
832 | if (err) { |
833 | if (kvm->lost_events) | |
834 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
835 | kvm->lost_events); | |
836 | return err; | |
837 | } | |
838 | } | |
839 | ||
840 | return throttled; | |
841 | } | |
842 | ||
843 | static volatile int done; | |
844 | ||
845 | static void sig_handler(int sig __maybe_unused) | |
846 | { | |
847 | done = 1; | |
848 | } | |
849 | ||
850 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
851 | { | |
852 | struct itimerspec new_value; | |
853 | int rc = -1; | |
854 | ||
855 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
856 | if (kvm->timerfd < 0) { | |
857 | pr_err("timerfd_create failed\n"); | |
858 | goto out; | |
859 | } | |
860 | ||
861 | new_value.it_value.tv_sec = kvm->display_time; | |
862 | new_value.it_value.tv_nsec = 0; | |
863 | new_value.it_interval.tv_sec = kvm->display_time; | |
864 | new_value.it_interval.tv_nsec = 0; | |
865 | ||
866 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
867 | pr_err("timerfd_settime failed: %d\n", errno); | |
868 | close(kvm->timerfd); | |
869 | goto out; | |
870 | } | |
871 | ||
872 | rc = 0; | |
873 | out: | |
874 | return rc; | |
875 | } | |
876 | ||
877 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
878 | { | |
879 | uint64_t c; | |
880 | int rc; | |
881 | ||
882 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
883 | if (rc < 0) { | |
884 | if (errno == EAGAIN) | |
885 | return 0; | |
886 | ||
887 | pr_err("Failed to read timer fd: %d\n", errno); | |
888 | return -1; | |
889 | } | |
890 | ||
891 | if (rc != sizeof(uint64_t)) { | |
892 | pr_err("Error reading timer fd - invalid size returned\n"); | |
893 | return -1; | |
894 | } | |
895 | ||
896 | if (c != 1) | |
897 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
898 | ||
899 | /* update display */ | |
900 | sort_result(kvm); | |
901 | print_result(kvm); | |
902 | ||
903 | /* reset counts */ | |
904 | clear_events_cache_stats(kvm->kvm_events_cache); | |
905 | kvm->total_count = 0; | |
906 | kvm->total_time = 0; | |
907 | kvm->lost_events = 0; | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int fd_set_nonblock(int fd) | |
913 | { | |
914 | long arg = 0; | |
915 | ||
916 | arg = fcntl(fd, F_GETFL); | |
917 | if (arg < 0) { | |
918 | pr_err("Failed to get current flags for fd %d\n", fd); | |
919 | return -1; | |
920 | } | |
921 | ||
922 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
923 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
924 | return -1; | |
925 | } | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
d5b4130a | 930 | static int perf_kvm__handle_stdin(void) |
1afe1d14 DA |
931 | { |
932 | int c; | |
933 | ||
1afe1d14 | 934 | c = getc(stdin); |
1afe1d14 DA |
935 | if (c == 'q') |
936 | return 1; | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
942 | { | |
1ca72260 | 943 | int nr_stdin, ret, err = -EINVAL; |
d5b4130a | 944 | struct termios save; |
1afe1d14 DA |
945 | |
946 | /* live flag must be set first */ | |
947 | kvm->live = true; | |
948 | ||
949 | ret = cpu_isa_config(kvm); | |
950 | if (ret < 0) | |
951 | return ret; | |
952 | ||
953 | if (!verify_vcpu(kvm->trace_vcpu) || | |
954 | !select_key(kvm) || | |
955 | !register_kvm_events_ops(kvm)) { | |
956 | goto out; | |
957 | } | |
958 | ||
d5b4130a | 959 | set_term_quiet_input(&save); |
1afe1d14 DA |
960 | init_kvm_event_record(kvm); |
961 | ||
1afe1d14 DA |
962 | signal(SIGINT, sig_handler); |
963 | signal(SIGTERM, sig_handler); | |
964 | ||
1afe1d14 DA |
965 | /* add timer fd */ |
966 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
967 | err = -1; | |
968 | goto out; | |
969 | } | |
970 | ||
f4009e7b | 971 | if (evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0) |
0a04c9e0 ACM |
972 | goto out; |
973 | ||
f4009e7b | 974 | nr_stdin = evlist__add_pollfd(kvm->evlist, fileno(stdin)); |
0cae013c | 975 | if (nr_stdin < 0) |
0a04c9e0 ACM |
976 | goto out; |
977 | ||
1afe1d14 DA |
978 | if (fd_set_nonblock(fileno(stdin)) != 0) |
979 | goto out; | |
980 | ||
981 | /* everything is good - enable the events and process */ | |
1c87f165 | 982 | evlist__enable(kvm->evlist); |
1afe1d14 DA |
983 | |
984 | while (!done) { | |
40cb2d51 | 985 | struct fdarray *fda = &kvm->evlist->core.pollfd; |
1afe1d14 DA |
986 | int rc; |
987 | ||
988 | rc = perf_kvm__mmap_read(kvm); | |
989 | if (rc < 0) | |
990 | break; | |
991 | ||
992 | err = perf_kvm__handle_timerfd(kvm); | |
993 | if (err) | |
994 | goto out; | |
995 | ||
1ca72260 | 996 | if (fda->entries[nr_stdin].revents & POLLIN) |
d5b4130a | 997 | done = perf_kvm__handle_stdin(); |
1afe1d14 DA |
998 | |
999 | if (!rc && !done) | |
4bfbcf3e | 1000 | err = evlist__poll(kvm->evlist, 100); |
1afe1d14 DA |
1001 | } |
1002 | ||
e74676de | 1003 | evlist__disable(kvm->evlist); |
1afe1d14 DA |
1004 | |
1005 | if (err == 0) { | |
1006 | sort_result(kvm); | |
1007 | print_result(kvm); | |
1008 | } | |
1009 | ||
1010 | out: | |
1011 | if (kvm->timerfd >= 0) | |
1012 | close(kvm->timerfd); | |
1013 | ||
d5b4130a | 1014 | tcsetattr(0, TCSAFLUSH, &save); |
1afe1d14 DA |
1015 | return err; |
1016 | } | |
1017 | ||
1018 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
1019 | { | |
1020 | int err, rc = -1; | |
32dcd021 | 1021 | struct evsel *pos; |
63503dba | 1022 | struct evlist *evlist = kvm->evlist; |
f9f33fdb | 1023 | char sbuf[STRERR_BUFSIZE]; |
1afe1d14 | 1024 | |
78e1bc25 | 1025 | evlist__config(evlist, &kvm->opts, NULL); |
1afe1d14 DA |
1026 | |
1027 | /* | |
1028 | * Note: exclude_{guest,host} do not apply here. | |
1029 | * This command processes KVM tracepoints from host only | |
1030 | */ | |
e5cadb93 | 1031 | evlist__for_each_entry(evlist, pos) { |
1fc632ce | 1032 | struct perf_event_attr *attr = &pos->core.attr; |
1afe1d14 DA |
1033 | |
1034 | /* make sure these *are* set */ | |
862b2f8f ACM |
1035 | evsel__set_sample_bit(pos, TID); |
1036 | evsel__set_sample_bit(pos, TIME); | |
1037 | evsel__set_sample_bit(pos, CPU); | |
1038 | evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 1039 | /* make sure these are *not*; want as small a sample as possible */ |
862b2f8f ACM |
1040 | evsel__reset_sample_bit(pos, PERIOD); |
1041 | evsel__reset_sample_bit(pos, IP); | |
1042 | evsel__reset_sample_bit(pos, CALLCHAIN); | |
1043 | evsel__reset_sample_bit(pos, ADDR); | |
1044 | evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1045 | attr->mmap = 0; |
1046 | attr->comm = 0; | |
1047 | attr->task = 0; | |
1048 | ||
1049 | attr->sample_period = 1; | |
1050 | ||
1051 | attr->watermark = 0; | |
1052 | attr->wakeup_events = 1000; | |
1053 | ||
1054 | /* will enable all once we are ready */ | |
1055 | attr->disabled = 1; | |
1056 | } | |
1057 | ||
474ddc4c | 1058 | err = evlist__open(evlist); |
1afe1d14 | 1059 | if (err < 0) { |
f9f33fdb | 1060 | printf("Couldn't create the events: %s\n", |
c8b5f2c9 | 1061 | str_error_r(errno, sbuf, sizeof(sbuf))); |
1afe1d14 | 1062 | goto out; |
bcf6edcd XG |
1063 | } |
1064 | ||
9521b5f2 | 1065 | if (evlist__mmap(evlist, kvm->opts.mmap_pages) < 0) { |
f9f33fdb | 1066 | ui__error("Failed to mmap the events: %s\n", |
c8b5f2c9 | 1067 | str_error_r(errno, sbuf, sizeof(sbuf))); |
750b4ede | 1068 | evlist__close(evlist); |
1afe1d14 DA |
1069 | goto out; |
1070 | } | |
1071 | ||
1072 | rc = 0; | |
1073 | ||
1074 | out: | |
1075 | return rc; | |
bcf6edcd | 1076 | } |
87419c9a | 1077 | #endif |
bcf6edcd | 1078 | |
3786063a | 1079 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1080 | { |
bcf6edcd XG |
1081 | int ret; |
1082 | ||
de332ac4 DA |
1083 | struct perf_tool eops = { |
1084 | .sample = process_sample_event, | |
1085 | .comm = perf_event__process_comm, | |
f3b3614a | 1086 | .namespaces = perf_event__process_namespaces, |
0a8cb85c | 1087 | .ordered_events = true, |
de332ac4 | 1088 | }; |
8ceb41d7 | 1089 | struct perf_data file = { |
2d4f2799 JO |
1090 | .path = kvm->file_name, |
1091 | .mode = PERF_DATA_MODE_READ, | |
1092 | .force = kvm->force, | |
f5fc1412 | 1093 | }; |
de332ac4 DA |
1094 | |
1095 | kvm->tool = eops; | |
2681bd85 | 1096 | kvm->session = perf_session__new(&file, &kvm->tool); |
6ef81c55 | 1097 | if (IS_ERR(kvm->session)) { |
bcf6edcd | 1098 | pr_err("Initializing perf session failed\n"); |
6ef81c55 | 1099 | return PTR_ERR(kvm->session); |
bcf6edcd XG |
1100 | } |
1101 | ||
0a7e6d1b | 1102 | symbol__init(&kvm->session->header.env); |
14d37f38 | 1103 | |
41b98360 TS |
1104 | if (!perf_session__has_traces(kvm->session, "kvm record")) { |
1105 | ret = -EINVAL; | |
1106 | goto out_delete; | |
1107 | } | |
bcf6edcd XG |
1108 | |
1109 | /* | |
1110 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1111 | * traced in the old kernel. | |
1112 | */ | |
1afe1d14 | 1113 | ret = cpu_isa_config(kvm); |
bcf6edcd | 1114 | if (ret < 0) |
41b98360 TS |
1115 | goto out_delete; |
1116 | ||
1117 | ret = perf_session__process_events(kvm->session); | |
bcf6edcd | 1118 | |
41b98360 TS |
1119 | out_delete: |
1120 | perf_session__delete(kvm->session); | |
1121 | return ret; | |
bcf6edcd XG |
1122 | } |
1123 | ||
2e73f00f DA |
1124 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1125 | { | |
3ae4a76a AY |
1126 | if (kvm->opts.target.pid) { |
1127 | kvm->pid_list = intlist__new(kvm->opts.target.pid); | |
2e73f00f DA |
1128 | if (kvm->pid_list == NULL) { |
1129 | pr_err("Error parsing process id string\n"); | |
1130 | return -EINVAL; | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
3786063a | 1137 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1138 | { |
1139 | int ret = -EINVAL; | |
de332ac4 | 1140 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1141 | |
2e73f00f DA |
1142 | if (parse_target_str(kvm) != 0) |
1143 | goto exit; | |
1144 | ||
bcf6edcd XG |
1145 | if (!verify_vcpu(vcpu)) |
1146 | goto exit; | |
1147 | ||
de332ac4 | 1148 | if (!select_key(kvm)) |
bcf6edcd XG |
1149 | goto exit; |
1150 | ||
de332ac4 | 1151 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1152 | goto exit; |
1153 | ||
de332ac4 | 1154 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1155 | setup_pager(); |
1156 | ||
de332ac4 | 1157 | ret = read_events(kvm); |
bcf6edcd XG |
1158 | if (ret) |
1159 | goto exit; | |
1160 | ||
de332ac4 DA |
1161 | sort_result(kvm); |
1162 | print_result(kvm); | |
1163 | ||
bcf6edcd XG |
1164 | exit: |
1165 | return ret; | |
1166 | } | |
1167 | ||
bcf6edcd XG |
1168 | #define STRDUP_FAIL_EXIT(s) \ |
1169 | ({ char *_p; \ | |
1170 | _p = strdup(s); \ | |
1171 | if (!_p) \ | |
1172 | return -ENOMEM; \ | |
1173 | _p; \ | |
1174 | }) | |
1175 | ||
066d3593 HK |
1176 | int __weak setup_kvm_events_tp(struct perf_kvm_stat *kvm __maybe_unused) |
1177 | { | |
1178 | return 0; | |
1179 | } | |
1180 | ||
3786063a XG |
1181 | static int |
1182 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd | 1183 | { |
9daa8123 | 1184 | unsigned int rec_argc, i, j, events_tp_size; |
bcf6edcd | 1185 | const char **rec_argv; |
8fdd84c4 DA |
1186 | const char * const record_args[] = { |
1187 | "record", | |
1188 | "-R", | |
8fdd84c4 DA |
1189 | "-m", "1024", |
1190 | "-c", "1", | |
1191 | }; | |
f45d20ff NK |
1192 | const char * const kvm_stat_record_usage[] = { |
1193 | "perf kvm stat record [<options>]", | |
1194 | NULL | |
1195 | }; | |
9daa8123 | 1196 | const char * const *events_tp; |
066d3593 HK |
1197 | int ret; |
1198 | ||
9daa8123 | 1199 | events_tp_size = 0; |
066d3593 HK |
1200 | ret = setup_kvm_events_tp(kvm); |
1201 | if (ret < 0) { | |
1202 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1203 | return ret; | |
1204 | } | |
9daa8123 AY |
1205 | |
1206 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) | |
1207 | events_tp_size++; | |
bcf6edcd | 1208 | |
8fdd84c4 | 1209 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
9daa8123 | 1210 | 2 * events_tp_size; |
bcf6edcd XG |
1211 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1212 | ||
1213 | if (rec_argv == NULL) | |
1214 | return -ENOMEM; | |
1215 | ||
1216 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1217 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1218 | ||
9daa8123 | 1219 | for (j = 0; j < events_tp_size; j++) { |
8fdd84c4 DA |
1220 | rec_argv[i++] = "-e"; |
1221 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1222 | } | |
1223 | ||
bcf6edcd | 1224 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1225 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1226 | |
1227 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1228 | rec_argv[i] = argv[j]; | |
1229 | ||
f45d20ff NK |
1230 | set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN); |
1231 | set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN); | |
1232 | set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN); | |
1233 | ||
1234 | set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED); | |
1235 | set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED); | |
1236 | set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED); | |
1237 | set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED); | |
1238 | set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED); | |
1239 | set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED); | |
1240 | set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED); | |
1241 | set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED); | |
1242 | set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED); | |
1243 | set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED); | |
1244 | set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED); | |
1245 | set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED); | |
1246 | set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED); | |
1247 | set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED); | |
1248 | set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED); | |
1249 | ||
1250 | record_usage = kvm_stat_record_usage; | |
b0ad8ea6 | 1251 | return cmd_record(i, rec_argv); |
bcf6edcd XG |
1252 | } |
1253 | ||
3786063a XG |
1254 | static int |
1255 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1256 | { |
1257 | const struct option kvm_events_report_options[] = { | |
1258 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
3be8e2a0 AY |
1259 | "event for reporting: vmexit, " |
1260 | "mmio (x86 only), ioport (x86 only)"), | |
de332ac4 DA |
1261 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1262 | "vcpu id to report"), | |
1263 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1264 | "key for sorting: sample(sort by samples number)" | |
1265 | " time (sort by avg time)"), | |
3ae4a76a | 1266 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", |
2e73f00f | 1267 | "analyze events only for given process id(s)"), |
8cc5ec1f | 1268 | OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"), |
de332ac4 DA |
1269 | OPT_END() |
1270 | }; | |
bcf6edcd | 1271 | |
de332ac4 DA |
1272 | const char * const kvm_events_report_usage[] = { |
1273 | "perf kvm stat report [<options>]", | |
1274 | NULL | |
1275 | }; | |
bcf6edcd | 1276 | |
bcf6edcd XG |
1277 | if (argc) { |
1278 | argc = parse_options(argc, argv, | |
1279 | kvm_events_report_options, | |
1280 | kvm_events_report_usage, 0); | |
1281 | if (argc) | |
1282 | usage_with_options(kvm_events_report_usage, | |
1283 | kvm_events_report_options); | |
1284 | } | |
1285 | ||
f181957c AY |
1286 | if (!kvm->opts.target.pid) |
1287 | kvm->opts.target.system_wide = true; | |
1288 | ||
de332ac4 | 1289 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1290 | } |
1291 | ||
87419c9a | 1292 | #ifdef HAVE_TIMERFD_SUPPORT |
63503dba | 1293 | static struct evlist *kvm_live_event_list(void) |
1afe1d14 | 1294 | { |
63503dba | 1295 | struct evlist *evlist; |
1afe1d14 | 1296 | char *tp, *name, *sys; |
1afe1d14 | 1297 | int err = -1; |
9daa8123 | 1298 | const char * const *events_tp; |
1afe1d14 | 1299 | |
0f98b11c | 1300 | evlist = evlist__new(); |
1afe1d14 DA |
1301 | if (evlist == NULL) |
1302 | return NULL; | |
1303 | ||
9daa8123 | 1304 | for (events_tp = kvm_events_tp; *events_tp; events_tp++) { |
1afe1d14 | 1305 | |
9daa8123 | 1306 | tp = strdup(*events_tp); |
1afe1d14 DA |
1307 | if (tp == NULL) |
1308 | goto out; | |
1309 | ||
1310 | /* split tracepoint into subsystem and name */ | |
1311 | sys = tp; | |
1312 | name = strchr(tp, ':'); | |
1313 | if (name == NULL) { | |
1314 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
9daa8123 | 1315 | *events_tp); |
1afe1d14 DA |
1316 | free(tp); |
1317 | goto out; | |
1318 | } | |
1319 | *name = '\0'; | |
1320 | name++; | |
1321 | ||
e251abee | 1322 | if (evlist__add_newtp(evlist, sys, name, NULL)) { |
9daa8123 | 1323 | pr_err("Failed to add %s tracepoint to the list\n", *events_tp); |
1afe1d14 DA |
1324 | free(tp); |
1325 | goto out; | |
1326 | } | |
1327 | ||
1328 | free(tp); | |
1329 | } | |
1330 | ||
1331 | err = 0; | |
1332 | ||
1333 | out: | |
1334 | if (err) { | |
c12995a5 | 1335 | evlist__delete(evlist); |
1afe1d14 DA |
1336 | evlist = NULL; |
1337 | } | |
1338 | ||
1339 | return evlist; | |
1340 | } | |
1341 | ||
1342 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1343 | int argc, const char **argv) | |
1344 | { | |
1345 | char errbuf[BUFSIZ]; | |
1346 | int err; | |
1347 | ||
1348 | const struct option live_options[] = { | |
1349 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1350 | "record events on existing process id"), | |
994a1f78 | 1351 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
25f84702 | 1352 | "number of mmap data pages", evlist__parse_mmap_pages), |
1afe1d14 DA |
1353 | OPT_INCR('v', "verbose", &verbose, |
1354 | "be more verbose (show counter open errors, etc)"), | |
1355 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1356 | "system-wide collection from all CPUs"), | |
1357 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1358 | "time in seconds between display updates"), | |
1359 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
99d348a8 AY |
1360 | "event for reporting: " |
1361 | "vmexit, mmio (x86 only), ioport (x86 only)"), | |
1afe1d14 DA |
1362 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, |
1363 | "vcpu id to report"), | |
1364 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1365 | "key for sorting: sample(sort by samples number)" | |
1366 | " time (sort by avg time)"), | |
70f7b4a7 | 1367 | OPT_U64(0, "duration", &kvm->duration, |
3be8e2a0 AY |
1368 | "show events other than" |
1369 | " HLT (x86 only) or Wait state (s390 only)" | |
1370 | " that take longer than duration usecs"), | |
3fcb10e4 | 1371 | OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout, |
9d9cad76 | 1372 | "per thread proc mmap processing timeout in ms"), |
1afe1d14 DA |
1373 | OPT_END() |
1374 | }; | |
1375 | const char * const live_usage[] = { | |
1376 | "perf kvm stat live [<options>]", | |
1377 | NULL | |
1378 | }; | |
8ceb41d7 | 1379 | struct perf_data data = { |
f5fc1412 JO |
1380 | .mode = PERF_DATA_MODE_WRITE, |
1381 | }; | |
1afe1d14 DA |
1382 | |
1383 | ||
1384 | /* event handling */ | |
1385 | kvm->tool.sample = process_sample_event; | |
1386 | kvm->tool.comm = perf_event__process_comm; | |
1387 | kvm->tool.exit = perf_event__process_exit; | |
1388 | kvm->tool.fork = perf_event__process_fork; | |
1389 | kvm->tool.lost = process_lost_event; | |
f3b3614a | 1390 | kvm->tool.namespaces = perf_event__process_namespaces; |
0a8cb85c | 1391 | kvm->tool.ordered_events = true; |
1afe1d14 DA |
1392 | perf_tool__fill_defaults(&kvm->tool); |
1393 | ||
1394 | /* set defaults */ | |
1395 | kvm->display_time = 1; | |
1396 | kvm->opts.user_interval = 1; | |
1397 | kvm->opts.mmap_pages = 512; | |
1398 | kvm->opts.target.uses_mmap = false; | |
1399 | kvm->opts.target.uid_str = NULL; | |
1400 | kvm->opts.target.uid = UINT_MAX; | |
1401 | ||
0a7e6d1b | 1402 | symbol__init(NULL); |
1afe1d14 DA |
1403 | disable_buildid_cache(); |
1404 | ||
1405 | use_browser = 0; | |
1afe1d14 DA |
1406 | |
1407 | if (argc) { | |
1408 | argc = parse_options(argc, argv, live_options, | |
1409 | live_usage, 0); | |
1410 | if (argc) | |
1411 | usage_with_options(live_usage, live_options); | |
1412 | } | |
1413 | ||
70f7b4a7 DA |
1414 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1415 | ||
1afe1d14 DA |
1416 | /* |
1417 | * target related setups | |
1418 | */ | |
602ad878 | 1419 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1420 | if (err) { |
602ad878 | 1421 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1422 | ui__warning("%s", errbuf); |
1423 | } | |
1424 | ||
602ad878 | 1425 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1426 | kvm->opts.target.system_wide = true; |
1427 | ||
1428 | ||
1429 | /* | |
1430 | * generate the event list | |
1431 | */ | |
066d3593 HK |
1432 | err = setup_kvm_events_tp(kvm); |
1433 | if (err < 0) { | |
1434 | pr_err("Unable to setup the kvm tracepoints\n"); | |
1435 | return err; | |
1436 | } | |
1437 | ||
1afe1d14 DA |
1438 | kvm->evlist = kvm_live_event_list(); |
1439 | if (kvm->evlist == NULL) { | |
1440 | err = -1; | |
1441 | goto out; | |
1442 | } | |
1443 | ||
7748bb71 | 1444 | if (evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) |
1afe1d14 DA |
1445 | usage_with_options(live_usage, live_options); |
1446 | ||
1447 | /* | |
1448 | * perf session | |
1449 | */ | |
2681bd85 | 1450 | kvm->session = perf_session__new(&data, &kvm->tool); |
6ef81c55 MI |
1451 | if (IS_ERR(kvm->session)) { |
1452 | err = PTR_ERR(kvm->session); | |
1afe1d14 DA |
1453 | goto out; |
1454 | } | |
1455 | kvm->session->evlist = kvm->evlist; | |
1456 | perf_session__set_id_hdr_size(kvm->session); | |
673d659f | 1457 | ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true); |
a33fbd56 | 1458 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
03617c22 | 1459 | kvm->evlist->core.threads, false, 1); |
1afe1d14 DA |
1460 | err = kvm_live_open_events(kvm); |
1461 | if (err) | |
1462 | goto out; | |
1463 | ||
1464 | err = kvm_events_live_report(kvm); | |
1465 | ||
1466 | out: | |
e1446551 | 1467 | perf_session__delete(kvm->session); |
1afe1d14 | 1468 | kvm->session = NULL; |
c12995a5 | 1469 | evlist__delete(kvm->evlist); |
1afe1d14 DA |
1470 | |
1471 | return err; | |
1472 | } | |
87419c9a | 1473 | #endif |
1afe1d14 | 1474 | |
bcf6edcd XG |
1475 | static void print_kvm_stat_usage(void) |
1476 | { | |
1477 | printf("Usage: perf kvm stat <command>\n\n"); | |
1478 | ||
1479 | printf("# Available commands:\n"); | |
1480 | printf("\trecord: record kvm events\n"); | |
1481 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1482 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1483 | |
1484 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1485 | } | |
1486 | ||
3786063a | 1487 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1488 | { |
3786063a XG |
1489 | struct perf_kvm_stat kvm = { |
1490 | .file_name = file_name, | |
1491 | ||
1492 | .trace_vcpu = -1, | |
1493 | .report_event = "vmexit", | |
1494 | .sort_key = "sample", | |
1495 | ||
3786063a XG |
1496 | }; |
1497 | ||
bcf6edcd XG |
1498 | if (argc == 1) { |
1499 | print_kvm_stat_usage(); | |
1500 | goto perf_stat; | |
1501 | } | |
1502 | ||
1503 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1504 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1505 | |
1506 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1507 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1508 | |
87419c9a | 1509 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1510 | if (!strncmp(argv[1], "live", 4)) |
1511 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1512 | #endif |
1afe1d14 | 1513 | |
bcf6edcd | 1514 | perf_stat: |
b0ad8ea6 | 1515 | return cmd_stat(argc, argv); |
bcf6edcd | 1516 | } |
da50ad69 | 1517 | #endif /* HAVE_KVM_STAT_SUPPORT */ |
bcf6edcd | 1518 | |
124eb5f8 AS |
1519 | int __weak kvm_add_default_arch_event(int *argc __maybe_unused, |
1520 | const char **argv __maybe_unused) | |
1521 | { | |
1522 | return 0; | |
1523 | } | |
1524 | ||
3786063a | 1525 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 | 1526 | { |
124eb5f8 | 1527 | int rec_argc, i = 0, j, ret; |
a1645ce1 ZY |
1528 | const char **rec_argv; |
1529 | ||
124eb5f8 AS |
1530 | ret = kvm_add_default_arch_event(&argc, argv); |
1531 | if (ret) | |
1532 | return -EINVAL; | |
1533 | ||
a1645ce1 ZY |
1534 | rec_argc = argc + 2; |
1535 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1536 | rec_argv[i++] = strdup("record"); | |
1537 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1538 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1539 | for (j = 1; j < argc; j++, i++) |
1540 | rec_argv[i] = argv[j]; | |
1541 | ||
1542 | BUG_ON(i != rec_argc); | |
1543 | ||
b0ad8ea6 | 1544 | return cmd_record(i, rec_argv); |
a1645ce1 ZY |
1545 | } |
1546 | ||
3786063a | 1547 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1548 | { |
1549 | int rec_argc, i = 0, j; | |
1550 | const char **rec_argv; | |
1551 | ||
1552 | rec_argc = argc + 2; | |
1553 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1554 | rec_argv[i++] = strdup("report"); | |
1555 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1556 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1557 | for (j = 1; j < argc; j++, i++) |
1558 | rec_argv[i] = argv[j]; | |
1559 | ||
1560 | BUG_ON(i != rec_argc); | |
1561 | ||
b0ad8ea6 | 1562 | return cmd_report(i, rec_argv); |
a1645ce1 ZY |
1563 | } |
1564 | ||
3786063a XG |
1565 | static int |
1566 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1567 | { |
1568 | int rec_argc, i = 0, j; | |
1569 | const char **rec_argv; | |
1570 | ||
1571 | rec_argc = argc + 2; | |
1572 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1573 | rec_argv[i++] = strdup("buildid-list"); | |
1574 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1575 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1576 | for (j = 1; j < argc; j++, i++) |
1577 | rec_argv[i] = argv[j]; | |
1578 | ||
1579 | BUG_ON(i != rec_argc); | |
1580 | ||
b0ad8ea6 | 1581 | return cmd_buildid_list(i, rec_argv); |
a1645ce1 ZY |
1582 | } |
1583 | ||
b0ad8ea6 | 1584 | int cmd_kvm(int argc, const char **argv) |
a1645ce1 | 1585 | { |
20914ce5 | 1586 | const char *file_name = NULL; |
de332ac4 | 1587 | const struct option kvm_options[] = { |
3786063a | 1588 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1589 | "Input file name"), |
3786063a | 1590 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1591 | "Output file name"), |
1592 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1593 | "Collect guest os data"), | |
1594 | OPT_BOOLEAN(0, "host", &perf_host, | |
1595 | "Collect host os data"), | |
1596 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1597 | "guest mount directory under which every guest os" | |
1598 | " instance has a subdir"), | |
1599 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1600 | "file", "file saving guest os vmlinux"), | |
1601 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1602 | "file", "file saving guest os /proc/kallsyms"), | |
1603 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1604 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1605 | OPT_INCR('v', "verbose", &verbose, |
1606 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1607 | OPT_END() |
1608 | }; | |
1609 | ||
09a71b97 RR |
1610 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1611 | "buildid-list", "stat", NULL }; | |
1612 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1613 | |
1aed2671 JR |
1614 | perf_host = 0; |
1615 | perf_guest = 1; | |
a1645ce1 | 1616 | |
09a71b97 RR |
1617 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1618 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1619 | if (!argc) |
1620 | usage_with_options(kvm_usage, kvm_options); | |
1621 | ||
1622 | if (!perf_host) | |
1623 | perf_guest = 1; | |
1624 | ||
3786063a | 1625 | if (!file_name) { |
e1a2b174 | 1626 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1627 | |
3786063a | 1628 | if (!file_name) { |
de332ac4 DA |
1629 | pr_err("Failed to allocate memory for filename\n"); |
1630 | return -ENOMEM; | |
1631 | } | |
a1645ce1 ZY |
1632 | } |
1633 | ||
1634 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1635 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1636 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1637 | return __cmd_report(file_name, argc, argv); |
a1645ce1 | 1638 | else if (!strncmp(argv[0], "diff", 4)) |
b0ad8ea6 | 1639 | return cmd_diff(argc, argv); |
a1645ce1 | 1640 | else if (!strncmp(argv[0], "top", 3)) |
b0ad8ea6 | 1641 | return cmd_top(argc, argv); |
a1645ce1 | 1642 | else if (!strncmp(argv[0], "buildid-list", 12)) |
3786063a | 1643 | return __cmd_buildid_list(file_name, argc, argv); |
da50ad69 | 1644 | #ifdef HAVE_KVM_STAT_SUPPORT |
bcf6edcd | 1645 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1646 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1647 | #endif |
a1645ce1 ZY |
1648 | else |
1649 | usage_with_options(kvm_usage, kvm_options); | |
1650 | ||
1651 | return 0; | |
1652 | } |