Commit | Line | Data |
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a1645ce1 ZY |
1 | #include "builtin.h" |
2 | #include "perf.h" | |
3 | ||
bcf6edcd | 4 | #include "util/evsel.h" |
1afe1d14 | 5 | #include "util/evlist.h" |
a1645ce1 ZY |
6 | #include "util/util.h" |
7 | #include "util/cache.h" | |
8 | #include "util/symbol.h" | |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
11 | #include "util/session.h" | |
2e73f00f | 12 | #include "util/intlist.h" |
a1645ce1 ZY |
13 | #include "util/parse-options.h" |
14 | #include "util/trace-event.h" | |
a1645ce1 | 15 | #include "util/debug.h" |
85c66be1 | 16 | #include <lk/debugfs.h> |
bcf6edcd XG |
17 | #include "util/tool.h" |
18 | #include "util/stat.h" | |
1afe1d14 | 19 | #include "util/top.h" |
a1645ce1 ZY |
20 | |
21 | #include <sys/prctl.h> | |
1afe1d14 | 22 | #include <sys/timerfd.h> |
a1645ce1 | 23 | |
1afe1d14 | 24 | #include <termios.h> |
a1645ce1 ZY |
25 | #include <semaphore.h> |
26 | #include <pthread.h> | |
27 | #include <math.h> | |
28 | ||
7321090f | 29 | #if defined(__i386__) || defined(__x86_64__) |
d2709c7c DH |
30 | #include <asm/svm.h> |
31 | #include <asm/vmx.h> | |
32 | #include <asm/kvm.h> | |
bcf6edcd XG |
33 | |
34 | struct event_key { | |
35 | #define INVALID_KEY (~0ULL) | |
36 | u64 key; | |
37 | int info; | |
38 | }; | |
39 | ||
de332ac4 DA |
40 | struct kvm_event_stats { |
41 | u64 time; | |
42 | struct stats stats; | |
43 | }; | |
44 | ||
45 | struct kvm_event { | |
46 | struct list_head hash_entry; | |
47 | struct rb_node rb; | |
48 | ||
49 | struct event_key key; | |
50 | ||
51 | struct kvm_event_stats total; | |
52 | ||
53 | #define DEFAULT_VCPU_NUM 8 | |
54 | int max_vcpu; | |
55 | struct kvm_event_stats *vcpu; | |
56 | }; | |
57 | ||
58 | typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int); | |
59 | ||
60 | struct kvm_event_key { | |
61 | const char *name; | |
62 | key_cmp_fun key; | |
63 | }; | |
64 | ||
65 | ||
3786063a | 66 | struct perf_kvm_stat; |
de332ac4 | 67 | |
bcf6edcd | 68 | struct kvm_events_ops { |
14907e73 ACM |
69 | bool (*is_begin_event)(struct perf_evsel *evsel, |
70 | struct perf_sample *sample, | |
71 | struct event_key *key); | |
72 | bool (*is_end_event)(struct perf_evsel *evsel, | |
73 | struct perf_sample *sample, struct event_key *key); | |
3786063a | 74 | void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key, |
de332ac4 | 75 | char decode[20]); |
bcf6edcd XG |
76 | const char *name; |
77 | }; | |
78 | ||
de332ac4 DA |
79 | struct exit_reasons_table { |
80 | unsigned long exit_code; | |
81 | const char *reason; | |
82 | }; | |
83 | ||
84 | #define EVENTS_BITS 12 | |
85 | #define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS) | |
86 | ||
3786063a | 87 | struct perf_kvm_stat { |
de332ac4 | 88 | struct perf_tool tool; |
1afe1d14 DA |
89 | struct perf_record_opts opts; |
90 | struct perf_evlist *evlist; | |
de332ac4 DA |
91 | struct perf_session *session; |
92 | ||
93 | const char *file_name; | |
94 | const char *report_event; | |
95 | const char *sort_key; | |
96 | int trace_vcpu; | |
97 | ||
98 | struct exit_reasons_table *exit_reasons; | |
99 | int exit_reasons_size; | |
100 | const char *exit_reasons_isa; | |
101 | ||
102 | struct kvm_events_ops *events_ops; | |
103 | key_cmp_fun compare; | |
104 | struct list_head kvm_events_cache[EVENTS_CACHE_SIZE]; | |
1afe1d14 | 105 | |
de332ac4 DA |
106 | u64 total_time; |
107 | u64 total_count; | |
1afe1d14 | 108 | u64 lost_events; |
70f7b4a7 | 109 | u64 duration; |
de332ac4 | 110 | |
2e73f00f DA |
111 | const char *pid_str; |
112 | struct intlist *pid_list; | |
113 | ||
de332ac4 | 114 | struct rb_root result; |
1afe1d14 DA |
115 | |
116 | int timerfd; | |
117 | unsigned int display_time; | |
118 | bool live; | |
de332ac4 DA |
119 | }; |
120 | ||
121 | ||
14907e73 ACM |
122 | static void exit_event_get_key(struct perf_evsel *evsel, |
123 | struct perf_sample *sample, | |
124 | struct event_key *key) | |
bcf6edcd XG |
125 | { |
126 | key->info = 0; | |
14907e73 | 127 | key->key = perf_evsel__intval(evsel, sample, "exit_reason"); |
bcf6edcd XG |
128 | } |
129 | ||
14907e73 | 130 | static bool kvm_exit_event(struct perf_evsel *evsel) |
bcf6edcd | 131 | { |
14907e73 | 132 | return !strcmp(evsel->name, "kvm:kvm_exit"); |
bcf6edcd XG |
133 | } |
134 | ||
14907e73 ACM |
135 | static bool exit_event_begin(struct perf_evsel *evsel, |
136 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd | 137 | { |
14907e73 ACM |
138 | if (kvm_exit_event(evsel)) { |
139 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
140 | return true; |
141 | } | |
142 | ||
143 | return false; | |
144 | } | |
145 | ||
14907e73 | 146 | static bool kvm_entry_event(struct perf_evsel *evsel) |
bcf6edcd | 147 | { |
14907e73 | 148 | return !strcmp(evsel->name, "kvm:kvm_entry"); |
bcf6edcd XG |
149 | } |
150 | ||
14907e73 ACM |
151 | static bool exit_event_end(struct perf_evsel *evsel, |
152 | struct perf_sample *sample __maybe_unused, | |
153 | struct event_key *key __maybe_unused) | |
bcf6edcd | 154 | { |
14907e73 | 155 | return kvm_entry_event(evsel); |
bcf6edcd XG |
156 | } |
157 | ||
de332ac4 | 158 | static struct exit_reasons_table vmx_exit_reasons[] = { |
bcf6edcd XG |
159 | VMX_EXIT_REASONS |
160 | }; | |
161 | ||
de332ac4 | 162 | static struct exit_reasons_table svm_exit_reasons[] = { |
bcf6edcd XG |
163 | SVM_EXIT_REASONS |
164 | }; | |
165 | ||
3786063a | 166 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, u64 exit_code) |
bcf6edcd | 167 | { |
de332ac4 DA |
168 | int i = kvm->exit_reasons_size; |
169 | struct exit_reasons_table *tbl = kvm->exit_reasons; | |
bcf6edcd | 170 | |
de332ac4 DA |
171 | while (i--) { |
172 | if (tbl->exit_code == exit_code) | |
173 | return tbl->reason; | |
174 | tbl++; | |
bcf6edcd XG |
175 | } |
176 | ||
177 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 178 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
179 | return "UNKNOWN"; |
180 | } | |
181 | ||
3786063a | 182 | static void exit_event_decode_key(struct perf_kvm_stat *kvm, |
de332ac4 DA |
183 | struct event_key *key, |
184 | char decode[20]) | |
bcf6edcd | 185 | { |
de332ac4 | 186 | const char *exit_reason = get_exit_reason(kvm, key->key); |
bcf6edcd XG |
187 | |
188 | scnprintf(decode, 20, "%s", exit_reason); | |
189 | } | |
190 | ||
191 | static struct kvm_events_ops exit_events = { | |
192 | .is_begin_event = exit_event_begin, | |
193 | .is_end_event = exit_event_end, | |
194 | .decode_key = exit_event_decode_key, | |
195 | .name = "VM-EXIT" | |
196 | }; | |
197 | ||
de332ac4 DA |
198 | /* |
199 | * For the mmio events, we treat: | |
200 | * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry | |
201 | * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...). | |
202 | */ | |
14907e73 ACM |
203 | static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample, |
204 | struct event_key *key) | |
bcf6edcd | 205 | { |
14907e73 ACM |
206 | key->key = perf_evsel__intval(evsel, sample, "gpa"); |
207 | key->info = perf_evsel__intval(evsel, sample, "type"); | |
bcf6edcd XG |
208 | } |
209 | ||
210 | #define KVM_TRACE_MMIO_READ_UNSATISFIED 0 | |
211 | #define KVM_TRACE_MMIO_READ 1 | |
212 | #define KVM_TRACE_MMIO_WRITE 2 | |
213 | ||
14907e73 ACM |
214 | static bool mmio_event_begin(struct perf_evsel *evsel, |
215 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd XG |
216 | { |
217 | /* MMIO read begin event in kernel. */ | |
14907e73 | 218 | if (kvm_exit_event(evsel)) |
bcf6edcd XG |
219 | return true; |
220 | ||
221 | /* MMIO write begin event in kernel. */ | |
14907e73 ACM |
222 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
223 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) { | |
224 | mmio_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
225 | return true; |
226 | } | |
227 | ||
228 | return false; | |
229 | } | |
230 | ||
14907e73 ACM |
231 | static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample, |
232 | struct event_key *key) | |
bcf6edcd XG |
233 | { |
234 | /* MMIO write end event in kernel. */ | |
14907e73 | 235 | if (kvm_entry_event(evsel)) |
bcf6edcd XG |
236 | return true; |
237 | ||
238 | /* MMIO read end event in kernel.*/ | |
14907e73 ACM |
239 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
240 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) { | |
241 | mmio_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
242 | return true; |
243 | } | |
244 | ||
245 | return false; | |
246 | } | |
247 | ||
3786063a | 248 | static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
de332ac4 DA |
249 | struct event_key *key, |
250 | char decode[20]) | |
bcf6edcd XG |
251 | { |
252 | scnprintf(decode, 20, "%#lx:%s", (unsigned long)key->key, | |
253 | key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R"); | |
254 | } | |
255 | ||
256 | static struct kvm_events_ops mmio_events = { | |
257 | .is_begin_event = mmio_event_begin, | |
258 | .is_end_event = mmio_event_end, | |
259 | .decode_key = mmio_event_decode_key, | |
260 | .name = "MMIO Access" | |
261 | }; | |
262 | ||
263 | /* The time of emulation pio access is from kvm_pio to kvm_entry. */ | |
14907e73 ACM |
264 | static void ioport_event_get_key(struct perf_evsel *evsel, |
265 | struct perf_sample *sample, | |
266 | struct event_key *key) | |
bcf6edcd | 267 | { |
14907e73 ACM |
268 | key->key = perf_evsel__intval(evsel, sample, "port"); |
269 | key->info = perf_evsel__intval(evsel, sample, "rw"); | |
bcf6edcd XG |
270 | } |
271 | ||
14907e73 ACM |
272 | static bool ioport_event_begin(struct perf_evsel *evsel, |
273 | struct perf_sample *sample, | |
274 | struct event_key *key) | |
bcf6edcd | 275 | { |
14907e73 ACM |
276 | if (!strcmp(evsel->name, "kvm:kvm_pio")) { |
277 | ioport_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
278 | return true; |
279 | } | |
280 | ||
281 | return false; | |
282 | } | |
283 | ||
14907e73 ACM |
284 | static bool ioport_event_end(struct perf_evsel *evsel, |
285 | struct perf_sample *sample __maybe_unused, | |
bcf6edcd XG |
286 | struct event_key *key __maybe_unused) |
287 | { | |
14907e73 | 288 | return kvm_entry_event(evsel); |
bcf6edcd XG |
289 | } |
290 | ||
3786063a | 291 | static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
de332ac4 DA |
292 | struct event_key *key, |
293 | char decode[20]) | |
bcf6edcd XG |
294 | { |
295 | scnprintf(decode, 20, "%#llx:%s", (unsigned long long)key->key, | |
296 | key->info ? "POUT" : "PIN"); | |
297 | } | |
298 | ||
299 | static struct kvm_events_ops ioport_events = { | |
300 | .is_begin_event = ioport_event_begin, | |
301 | .is_end_event = ioport_event_end, | |
302 | .decode_key = ioport_event_decode_key, | |
303 | .name = "IO Port Access" | |
304 | }; | |
305 | ||
3786063a | 306 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
307 | { |
308 | bool ret = true; | |
309 | ||
de332ac4 DA |
310 | if (!strcmp(kvm->report_event, "vmexit")) |
311 | kvm->events_ops = &exit_events; | |
312 | else if (!strcmp(kvm->report_event, "mmio")) | |
313 | kvm->events_ops = &mmio_events; | |
314 | else if (!strcmp(kvm->report_event, "ioport")) | |
315 | kvm->events_ops = &ioport_events; | |
bcf6edcd | 316 | else { |
de332ac4 | 317 | pr_err("Unknown report event:%s\n", kvm->report_event); |
bcf6edcd XG |
318 | ret = false; |
319 | } | |
320 | ||
321 | return ret; | |
322 | } | |
323 | ||
bcf6edcd XG |
324 | struct vcpu_event_record { |
325 | int vcpu_id; | |
326 | u64 start_time; | |
327 | struct kvm_event *last_event; | |
328 | }; | |
329 | ||
bcf6edcd | 330 | |
3786063a | 331 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 332 | { |
b880deea | 333 | unsigned int i; |
bcf6edcd | 334 | |
b880deea | 335 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 336 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
337 | } |
338 | ||
1afe1d14 DA |
339 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
340 | { | |
341 | struct list_head *head; | |
342 | struct kvm_event *event; | |
343 | unsigned int i; | |
62d04dbf | 344 | int j; |
1afe1d14 DA |
345 | |
346 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
347 | head = &kvm_events_cache[i]; | |
348 | list_for_each_entry(event, head, hash_entry) { | |
349 | /* reset stats for event */ | |
62d04dbf DA |
350 | event->total.time = 0; |
351 | init_stats(&event->total.stats); | |
352 | ||
353 | for (j = 0; j < event->max_vcpu; ++j) { | |
354 | event->vcpu[j].time = 0; | |
355 | init_stats(&event->vcpu[j].stats); | |
356 | } | |
1afe1d14 DA |
357 | } |
358 | } | |
359 | } | |
360 | ||
bcf6edcd XG |
361 | static int kvm_events_hash_fn(u64 key) |
362 | { | |
363 | return key & (EVENTS_CACHE_SIZE - 1); | |
364 | } | |
365 | ||
366 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
367 | { | |
368 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 369 | void *prev; |
bcf6edcd XG |
370 | |
371 | if (vcpu_id < event->max_vcpu) | |
372 | return true; | |
373 | ||
374 | while (event->max_vcpu <= vcpu_id) | |
375 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
376 | ||
6ca5f308 | 377 | prev = event->vcpu; |
bcf6edcd XG |
378 | event->vcpu = realloc(event->vcpu, |
379 | event->max_vcpu * sizeof(*event->vcpu)); | |
380 | if (!event->vcpu) { | |
6ca5f308 | 381 | free(prev); |
bcf6edcd XG |
382 | pr_err("Not enough memory\n"); |
383 | return false; | |
384 | } | |
385 | ||
386 | memset(event->vcpu + old_max_vcpu, 0, | |
387 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
388 | return true; | |
389 | } | |
390 | ||
391 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
392 | { | |
393 | struct kvm_event *event; | |
394 | ||
395 | event = zalloc(sizeof(*event)); | |
396 | if (!event) { | |
397 | pr_err("Not enough memory\n"); | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | event->key = *key; | |
402 | return event; | |
403 | } | |
404 | ||
3786063a | 405 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 406 | struct event_key *key) |
bcf6edcd XG |
407 | { |
408 | struct kvm_event *event; | |
409 | struct list_head *head; | |
410 | ||
411 | BUG_ON(key->key == INVALID_KEY); | |
412 | ||
de332ac4 | 413 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 414 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
415 | if (event->key.key == key->key && event->key.info == key->info) |
416 | return event; | |
355afe81 | 417 | } |
bcf6edcd XG |
418 | |
419 | event = kvm_alloc_init_event(key); | |
420 | if (!event) | |
421 | return NULL; | |
422 | ||
423 | list_add(&event->hash_entry, head); | |
424 | return event; | |
425 | } | |
426 | ||
3786063a | 427 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 428 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
429 | struct event_key *key, u64 timestamp) |
430 | { | |
431 | struct kvm_event *event = NULL; | |
432 | ||
433 | if (key->key != INVALID_KEY) | |
de332ac4 | 434 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
435 | |
436 | vcpu_record->last_event = event; | |
437 | vcpu_record->start_time = timestamp; | |
438 | return true; | |
439 | } | |
440 | ||
441 | static void | |
442 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
443 | { | |
444 | kvm_stats->time += time_diff; | |
445 | update_stats(&kvm_stats->stats, time_diff); | |
446 | } | |
447 | ||
448 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
449 | { | |
450 | struct kvm_event_stats *kvm_stats = &event->total; | |
451 | ||
452 | if (vcpu_id != -1) | |
453 | kvm_stats = &event->vcpu[vcpu_id]; | |
454 | ||
455 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
456 | avg_stats(&kvm_stats->stats)); | |
457 | } | |
458 | ||
459 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
460 | u64 time_diff) | |
461 | { | |
2aa8eab0 DA |
462 | if (vcpu_id == -1) { |
463 | kvm_update_event_stats(&event->total, time_diff); | |
464 | return true; | |
465 | } | |
bcf6edcd XG |
466 | |
467 | if (!kvm_event_expand(event, vcpu_id)) | |
468 | return false; | |
469 | ||
470 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
471 | return true; | |
472 | } | |
473 | ||
3786063a | 474 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
475 | struct vcpu_event_record *vcpu_record, |
476 | struct event_key *key, | |
70f7b4a7 | 477 | struct perf_sample *sample) |
bcf6edcd XG |
478 | { |
479 | struct kvm_event *event; | |
480 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
481 | int vcpu; |
482 | ||
483 | if (kvm->trace_vcpu == -1) | |
484 | vcpu = -1; | |
485 | else | |
486 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
487 | |
488 | event = vcpu_record->last_event; | |
489 | time_begin = vcpu_record->start_time; | |
490 | ||
491 | /* The begin event is not caught. */ | |
492 | if (!time_begin) | |
493 | return true; | |
494 | ||
495 | /* | |
496 | * In some case, the 'begin event' only records the start timestamp, | |
497 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
498 | */ | |
499 | ||
500 | /* Both begin and end events did not get the key. */ | |
501 | if (!event && key->key == INVALID_KEY) | |
502 | return true; | |
503 | ||
504 | if (!event) | |
de332ac4 | 505 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
506 | |
507 | if (!event) | |
508 | return false; | |
509 | ||
510 | vcpu_record->last_event = NULL; | |
511 | vcpu_record->start_time = 0; | |
512 | ||
1afe1d14 | 513 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 514 | if (sample->time < time_begin) { |
1afe1d14 DA |
515 | pr_debug("End time before begin time; skipping event.\n"); |
516 | return true; | |
517 | } | |
bcf6edcd | 518 | |
70f7b4a7 DA |
519 | time_diff = sample->time - time_begin; |
520 | ||
521 | if (kvm->duration && time_diff > kvm->duration) { | |
522 | char decode[32]; | |
523 | ||
524 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
525 | if (strcmp(decode, "HLT")) { | |
526 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", | |
527 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
528 | decode, time_diff/1000); | |
529 | } | |
530 | } | |
531 | ||
2aa8eab0 | 532 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
533 | } |
534 | ||
14907e73 ACM |
535 | static |
536 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
537 | struct perf_evsel *evsel, | |
538 | struct perf_sample *sample) | |
bcf6edcd XG |
539 | { |
540 | /* Only kvm_entry records vcpu id. */ | |
14907e73 | 541 | if (!thread->priv && kvm_entry_event(evsel)) { |
bcf6edcd XG |
542 | struct vcpu_event_record *vcpu_record; |
543 | ||
14907e73 | 544 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 545 | if (!vcpu_record) { |
14907e73 | 546 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
547 | return NULL; |
548 | } | |
549 | ||
14907e73 | 550 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, "vcpu_id"); |
bcf6edcd XG |
551 | thread->priv = vcpu_record; |
552 | } | |
553 | ||
14907e73 | 554 | return thread->priv; |
bcf6edcd XG |
555 | } |
556 | ||
3786063a | 557 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
558 | struct thread *thread, |
559 | struct perf_evsel *evsel, | |
14907e73 | 560 | struct perf_sample *sample) |
bcf6edcd XG |
561 | { |
562 | struct vcpu_event_record *vcpu_record; | |
563 | struct event_key key = {.key = INVALID_KEY}; | |
564 | ||
14907e73 | 565 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
566 | if (!vcpu_record) |
567 | return true; | |
568 | ||
2aa8eab0 DA |
569 | /* only process events for vcpus user cares about */ |
570 | if ((kvm->trace_vcpu != -1) && | |
571 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
572 | return true; | |
573 | ||
de332ac4 DA |
574 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
575 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 576 | |
de332ac4 | 577 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 578 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
579 | |
580 | return true; | |
581 | } | |
582 | ||
bcf6edcd XG |
583 | #define GET_EVENT_KEY(func, field) \ |
584 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
585 | { \ | |
586 | if (vcpu == -1) \ | |
587 | return event->total.field; \ | |
588 | \ | |
589 | if (vcpu >= event->max_vcpu) \ | |
590 | return 0; \ | |
591 | \ | |
592 | return event->vcpu[vcpu].field; \ | |
593 | } | |
594 | ||
595 | #define COMPARE_EVENT_KEY(func, field) \ | |
596 | GET_EVENT_KEY(func, field) \ | |
597 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
598 | struct kvm_event *two, int vcpu)\ | |
599 | { \ | |
600 | return get_event_ ##func(one, vcpu) > \ | |
601 | get_event_ ##func(two, vcpu); \ | |
602 | } | |
603 | ||
604 | GET_EVENT_KEY(time, time); | |
605 | COMPARE_EVENT_KEY(count, stats.n); | |
606 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
607 | GET_EVENT_KEY(max, stats.max); |
608 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
609 | |
610 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
611 | { #name, compare_kvm_event_ ## compare_key } | |
612 | ||
613 | static struct kvm_event_key keys[] = { | |
614 | DEF_SORT_NAME_KEY(sample, count), | |
615 | DEF_SORT_NAME_KEY(time, mean), | |
616 | { NULL, NULL } | |
617 | }; | |
618 | ||
3786063a | 619 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
620 | { |
621 | int i; | |
622 | ||
623 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
624 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
625 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
626 | return true; |
627 | } | |
628 | } | |
629 | ||
de332ac4 | 630 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
631 | return false; |
632 | } | |
633 | ||
de332ac4 DA |
634 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
635 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 636 | { |
de332ac4 | 637 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
638 | struct rb_node *parent = NULL; |
639 | struct kvm_event *p; | |
640 | ||
641 | while (*rb) { | |
642 | p = container_of(*rb, struct kvm_event, rb); | |
643 | parent = *rb; | |
644 | ||
645 | if (bigger(event, p, vcpu)) | |
646 | rb = &(*rb)->rb_left; | |
647 | else | |
648 | rb = &(*rb)->rb_right; | |
649 | } | |
650 | ||
651 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 652 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
653 | } |
654 | ||
3786063a XG |
655 | static void |
656 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 657 | { |
de332ac4 DA |
658 | int vcpu = kvm->trace_vcpu; |
659 | ||
660 | kvm->total_count += get_event_count(event, vcpu); | |
661 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
662 | } |
663 | ||
664 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
665 | { | |
666 | return !!get_event_count(event, vcpu); | |
667 | } | |
668 | ||
3786063a | 669 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
670 | { |
671 | unsigned int i; | |
de332ac4 | 672 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
673 | struct kvm_event *event; |
674 | ||
355afe81 DA |
675 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
676 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 677 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
678 | update_total_count(kvm, event); |
679 | insert_to_result(&kvm->result, event, | |
680 | kvm->compare, vcpu); | |
bcf6edcd | 681 | } |
355afe81 DA |
682 | } |
683 | } | |
bcf6edcd XG |
684 | } |
685 | ||
686 | /* returns left most element of result, and erase it */ | |
de332ac4 | 687 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 688 | { |
de332ac4 | 689 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
690 | |
691 | if (!node) | |
692 | return NULL; | |
693 | ||
de332ac4 | 694 | rb_erase(node, result); |
bcf6edcd XG |
695 | return container_of(node, struct kvm_event, rb); |
696 | } | |
697 | ||
1afe1d14 | 698 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 699 | { |
1afe1d14 DA |
700 | int vcpu = kvm->trace_vcpu; |
701 | ||
bcf6edcd XG |
702 | pr_info("Analyze events for "); |
703 | ||
1afe1d14 DA |
704 | if (kvm->live) { |
705 | if (kvm->opts.target.system_wide) | |
706 | pr_info("all VMs, "); | |
707 | else if (kvm->opts.target.pid) | |
708 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
709 | else | |
710 | pr_info("dazed and confused on what is monitored, "); | |
711 | } | |
712 | ||
bcf6edcd XG |
713 | if (vcpu == -1) |
714 | pr_info("all VCPUs:\n\n"); | |
715 | else | |
716 | pr_info("VCPU %d:\n\n", vcpu); | |
717 | } | |
718 | ||
1afe1d14 DA |
719 | static void show_timeofday(void) |
720 | { | |
721 | char date[64]; | |
722 | struct timeval tv; | |
723 | struct tm ltime; | |
724 | ||
725 | gettimeofday(&tv, NULL); | |
726 | if (localtime_r(&tv.tv_sec, <ime)) { | |
727 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
728 | pr_info("%s.%06ld", date, tv.tv_usec); | |
729 | } else | |
730 | pr_info("00:00:00.000000"); | |
731 | ||
732 | return; | |
733 | } | |
734 | ||
3786063a | 735 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
736 | { |
737 | char decode[20]; | |
738 | struct kvm_event *event; | |
de332ac4 | 739 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 740 | |
1afe1d14 DA |
741 | if (kvm->live) { |
742 | puts(CONSOLE_CLEAR); | |
743 | show_timeofday(); | |
744 | } | |
745 | ||
bcf6edcd | 746 | pr_info("\n\n"); |
1afe1d14 | 747 | print_vcpu_info(kvm); |
de332ac4 | 748 | pr_info("%20s ", kvm->events_ops->name); |
bcf6edcd XG |
749 | pr_info("%10s ", "Samples"); |
750 | pr_info("%9s ", "Samples%"); | |
751 | ||
752 | pr_info("%9s ", "Time%"); | |
62d04dbf DA |
753 | pr_info("%10s ", "Min Time"); |
754 | pr_info("%10s ", "Max Time"); | |
bcf6edcd XG |
755 | pr_info("%16s ", "Avg time"); |
756 | pr_info("\n\n"); | |
757 | ||
de332ac4 | 758 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 759 | u64 ecount, etime, max, min; |
bcf6edcd XG |
760 | |
761 | ecount = get_event_count(event, vcpu); | |
762 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
763 | max = get_event_max(event, vcpu); |
764 | min = get_event_min(event, vcpu); | |
bcf6edcd | 765 | |
de332ac4 | 766 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
bcf6edcd XG |
767 | pr_info("%20s ", decode); |
768 | pr_info("%10llu ", (unsigned long long)ecount); | |
de332ac4 DA |
769 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
770 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
62d04dbf DA |
771 | pr_info("%8" PRIu64 "us ", min / 1000); |
772 | pr_info("%8" PRIu64 "us ", max / 1000); | |
bcf6edcd XG |
773 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, |
774 | kvm_event_rel_stddev(vcpu, event)); | |
775 | pr_info("\n"); | |
776 | } | |
777 | ||
e4f7637f DA |
778 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
779 | kvm->total_count, kvm->total_time / 1e3); | |
1afe1d14 DA |
780 | |
781 | if (kvm->lost_events) | |
782 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
783 | } | |
784 | ||
785 | static int process_lost_event(struct perf_tool *tool, | |
786 | union perf_event *event __maybe_unused, | |
787 | struct perf_sample *sample __maybe_unused, | |
788 | struct machine *machine __maybe_unused) | |
789 | { | |
790 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
791 | ||
792 | kvm->lost_events++; | |
793 | return 0; | |
bcf6edcd XG |
794 | } |
795 | ||
2e73f00f DA |
796 | static bool skip_sample(struct perf_kvm_stat *kvm, |
797 | struct perf_sample *sample) | |
798 | { | |
799 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
800 | return true; | |
801 | ||
802 | return false; | |
803 | } | |
804 | ||
de332ac4 | 805 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
806 | union perf_event *event, |
807 | struct perf_sample *sample, | |
808 | struct perf_evsel *evsel, | |
809 | struct machine *machine) | |
810 | { | |
2e73f00f | 811 | struct thread *thread; |
3786063a XG |
812 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
813 | tool); | |
bcf6edcd | 814 | |
2e73f00f DA |
815 | if (skip_sample(kvm, sample)) |
816 | return 0; | |
817 | ||
818 | thread = machine__findnew_thread(machine, sample->tid); | |
bcf6edcd XG |
819 | if (thread == NULL) { |
820 | pr_debug("problem processing %d event, skipping it.\n", | |
821 | event->header.type); | |
822 | return -1; | |
823 | } | |
824 | ||
de332ac4 | 825 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
bcf6edcd XG |
826 | return -1; |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
1afe1d14 | 831 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 832 | { |
1afe1d14 DA |
833 | char buf[64], *cpuid; |
834 | int err, isa; | |
835 | ||
836 | if (kvm->live) { | |
837 | err = get_cpuid(buf, sizeof(buf)); | |
838 | if (err != 0) { | |
839 | pr_err("Failed to look up CPU type (Intel or AMD)\n"); | |
840 | return err; | |
841 | } | |
842 | cpuid = buf; | |
843 | } else | |
844 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 845 | |
bcf6edcd XG |
846 | if (strstr(cpuid, "Intel")) |
847 | isa = 1; | |
848 | else if (strstr(cpuid, "AMD")) | |
849 | isa = 0; | |
850 | else { | |
851 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 DA |
852 | return -ENOTSUP; |
853 | } | |
854 | ||
855 | if (isa == 1) { | |
856 | kvm->exit_reasons = vmx_exit_reasons; | |
857 | kvm->exit_reasons_size = ARRAY_SIZE(vmx_exit_reasons); | |
858 | kvm->exit_reasons_isa = "VMX"; | |
859 | } | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | static bool verify_vcpu(int vcpu) | |
865 | { | |
866 | if (vcpu != -1 && vcpu < 0) { | |
867 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
868 | return false; | |
869 | } | |
870 | ||
871 | return true; | |
872 | } | |
873 | ||
874 | /* keeping the max events to a modest level to keep | |
875 | * the processing of samples per mmap smooth. | |
876 | */ | |
877 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
878 | ||
879 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
880 | u64 *mmap_time) | |
881 | { | |
882 | union perf_event *event; | |
883 | struct perf_sample sample; | |
884 | s64 n = 0; | |
885 | int err; | |
886 | ||
887 | *mmap_time = ULLONG_MAX; | |
888 | while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { | |
889 | err = perf_evlist__parse_sample(kvm->evlist, event, &sample); | |
890 | if (err) { | |
891 | pr_err("Failed to parse sample\n"); | |
892 | return -1; | |
893 | } | |
894 | ||
895 | err = perf_session_queue_event(kvm->session, event, &sample, 0); | |
896 | if (err) { | |
897 | pr_err("Failed to enqueue sample: %d\n", err); | |
898 | return -1; | |
899 | } | |
900 | ||
901 | /* save time stamp of our first sample for this mmap */ | |
902 | if (n == 0) | |
903 | *mmap_time = sample.time; | |
904 | ||
905 | /* limit events per mmap handled all at once */ | |
906 | n++; | |
907 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
908 | break; | |
909 | } | |
910 | ||
911 | return n; | |
912 | } | |
913 | ||
914 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
915 | { | |
916 | int i, err, throttled = 0; | |
917 | s64 n, ntotal = 0; | |
918 | u64 flush_time = ULLONG_MAX, mmap_time; | |
919 | ||
920 | for (i = 0; i < kvm->evlist->nr_mmaps; i++) { | |
921 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); | |
922 | if (n < 0) | |
923 | return -1; | |
924 | ||
925 | /* flush time is going to be the minimum of all the individual | |
926 | * mmap times. Essentially, we flush all the samples queued up | |
927 | * from the last pass under our minimal start time -- that leaves | |
928 | * a very small race for samples to come in with a lower timestamp. | |
929 | * The ioctl to return the perf_clock timestamp should close the | |
930 | * race entirely. | |
931 | */ | |
932 | if (mmap_time < flush_time) | |
933 | flush_time = mmap_time; | |
934 | ||
935 | ntotal += n; | |
936 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
937 | throttled = 1; | |
938 | } | |
939 | ||
940 | /* flush queue after each round in which we processed events */ | |
941 | if (ntotal) { | |
942 | kvm->session->ordered_samples.next_flush = flush_time; | |
943 | err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session); | |
944 | if (err) { | |
945 | if (kvm->lost_events) | |
946 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
947 | kvm->lost_events); | |
948 | return err; | |
949 | } | |
950 | } | |
951 | ||
952 | return throttled; | |
953 | } | |
954 | ||
955 | static volatile int done; | |
956 | ||
957 | static void sig_handler(int sig __maybe_unused) | |
958 | { | |
959 | done = 1; | |
960 | } | |
961 | ||
962 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
963 | { | |
964 | struct itimerspec new_value; | |
965 | int rc = -1; | |
966 | ||
967 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
968 | if (kvm->timerfd < 0) { | |
969 | pr_err("timerfd_create failed\n"); | |
970 | goto out; | |
971 | } | |
972 | ||
973 | new_value.it_value.tv_sec = kvm->display_time; | |
974 | new_value.it_value.tv_nsec = 0; | |
975 | new_value.it_interval.tv_sec = kvm->display_time; | |
976 | new_value.it_interval.tv_nsec = 0; | |
977 | ||
978 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
979 | pr_err("timerfd_settime failed: %d\n", errno); | |
980 | close(kvm->timerfd); | |
981 | goto out; | |
982 | } | |
983 | ||
984 | rc = 0; | |
985 | out: | |
986 | return rc; | |
987 | } | |
988 | ||
989 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
990 | { | |
991 | uint64_t c; | |
992 | int rc; | |
993 | ||
994 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
995 | if (rc < 0) { | |
996 | if (errno == EAGAIN) | |
997 | return 0; | |
998 | ||
999 | pr_err("Failed to read timer fd: %d\n", errno); | |
1000 | return -1; | |
1001 | } | |
1002 | ||
1003 | if (rc != sizeof(uint64_t)) { | |
1004 | pr_err("Error reading timer fd - invalid size returned\n"); | |
1005 | return -1; | |
1006 | } | |
1007 | ||
1008 | if (c != 1) | |
1009 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
1010 | ||
1011 | /* update display */ | |
1012 | sort_result(kvm); | |
1013 | print_result(kvm); | |
1014 | ||
1015 | /* reset counts */ | |
1016 | clear_events_cache_stats(kvm->kvm_events_cache); | |
1017 | kvm->total_count = 0; | |
1018 | kvm->total_time = 0; | |
1019 | kvm->lost_events = 0; | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | static int fd_set_nonblock(int fd) | |
1025 | { | |
1026 | long arg = 0; | |
1027 | ||
1028 | arg = fcntl(fd, F_GETFL); | |
1029 | if (arg < 0) { | |
1030 | pr_err("Failed to get current flags for fd %d\n", fd); | |
1031 | return -1; | |
1032 | } | |
1033 | ||
1034 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
1035 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
1036 | return -1; | |
1037 | } | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | static | |
1043 | int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save) | |
1044 | { | |
1045 | int c; | |
1046 | ||
1047 | tcsetattr(0, TCSANOW, tc_now); | |
1048 | c = getc(stdin); | |
1049 | tcsetattr(0, TCSAFLUSH, tc_save); | |
1050 | ||
1051 | if (c == 'q') | |
1052 | return 1; | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
1058 | { | |
1059 | struct pollfd *pollfds = NULL; | |
1060 | int nr_fds, nr_stdin, ret, err = -EINVAL; | |
1061 | struct termios tc, save; | |
1062 | ||
1063 | /* live flag must be set first */ | |
1064 | kvm->live = true; | |
1065 | ||
1066 | ret = cpu_isa_config(kvm); | |
1067 | if (ret < 0) | |
1068 | return ret; | |
1069 | ||
1070 | if (!verify_vcpu(kvm->trace_vcpu) || | |
1071 | !select_key(kvm) || | |
1072 | !register_kvm_events_ops(kvm)) { | |
1073 | goto out; | |
1074 | } | |
1075 | ||
1076 | init_kvm_event_record(kvm); | |
1077 | ||
1078 | tcgetattr(0, &save); | |
1079 | tc = save; | |
1080 | tc.c_lflag &= ~(ICANON | ECHO); | |
1081 | tc.c_cc[VMIN] = 0; | |
1082 | tc.c_cc[VTIME] = 0; | |
1083 | ||
1084 | signal(SIGINT, sig_handler); | |
1085 | signal(SIGTERM, sig_handler); | |
1086 | ||
1087 | /* copy pollfds -- need to add timerfd and stdin */ | |
1088 | nr_fds = kvm->evlist->nr_fds; | |
1089 | pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2)); | |
1090 | if (!pollfds) { | |
1091 | err = -ENOMEM; | |
1092 | goto out; | |
1093 | } | |
1094 | memcpy(pollfds, kvm->evlist->pollfd, | |
1095 | sizeof(struct pollfd) * kvm->evlist->nr_fds); | |
1096 | ||
1097 | /* add timer fd */ | |
1098 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
1099 | err = -1; | |
1100 | goto out; | |
1101 | } | |
1102 | ||
1103 | pollfds[nr_fds].fd = kvm->timerfd; | |
1104 | pollfds[nr_fds].events = POLLIN; | |
1105 | nr_fds++; | |
1106 | ||
1107 | pollfds[nr_fds].fd = fileno(stdin); | |
1108 | pollfds[nr_fds].events = POLLIN; | |
1109 | nr_stdin = nr_fds; | |
1110 | nr_fds++; | |
1111 | if (fd_set_nonblock(fileno(stdin)) != 0) | |
1112 | goto out; | |
1113 | ||
1114 | /* everything is good - enable the events and process */ | |
1115 | perf_evlist__enable(kvm->evlist); | |
1116 | ||
1117 | while (!done) { | |
1118 | int rc; | |
1119 | ||
1120 | rc = perf_kvm__mmap_read(kvm); | |
1121 | if (rc < 0) | |
1122 | break; | |
1123 | ||
1124 | err = perf_kvm__handle_timerfd(kvm); | |
1125 | if (err) | |
1126 | goto out; | |
1127 | ||
1128 | if (pollfds[nr_stdin].revents & POLLIN) | |
1129 | done = perf_kvm__handle_stdin(&tc, &save); | |
1130 | ||
1131 | if (!rc && !done) | |
1132 | err = poll(pollfds, nr_fds, 100); | |
1133 | } | |
1134 | ||
1135 | perf_evlist__disable(kvm->evlist); | |
1136 | ||
1137 | if (err == 0) { | |
1138 | sort_result(kvm); | |
1139 | print_result(kvm); | |
1140 | } | |
1141 | ||
1142 | out: | |
1143 | if (kvm->timerfd >= 0) | |
1144 | close(kvm->timerfd); | |
1145 | ||
1146 | if (pollfds) | |
1147 | free(pollfds); | |
1148 | ||
1149 | return err; | |
1150 | } | |
1151 | ||
1152 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
1153 | { | |
1154 | int err, rc = -1; | |
1155 | struct perf_evsel *pos; | |
1156 | struct perf_evlist *evlist = kvm->evlist; | |
1157 | ||
1158 | perf_evlist__config(evlist, &kvm->opts); | |
1159 | ||
1160 | /* | |
1161 | * Note: exclude_{guest,host} do not apply here. | |
1162 | * This command processes KVM tracepoints from host only | |
1163 | */ | |
1164 | list_for_each_entry(pos, &evlist->entries, node) { | |
1165 | struct perf_event_attr *attr = &pos->attr; | |
1166 | ||
1167 | /* make sure these *are* set */ | |
1168 | attr->sample_type |= PERF_SAMPLE_TID; | |
1169 | attr->sample_type |= PERF_SAMPLE_TIME; | |
1170 | attr->sample_type |= PERF_SAMPLE_CPU; | |
1171 | attr->sample_type |= PERF_SAMPLE_RAW; | |
1172 | /* make sure these are *not*; want as small a sample as possible */ | |
1173 | attr->sample_type &= ~PERF_SAMPLE_PERIOD; | |
1174 | attr->sample_type &= ~PERF_SAMPLE_IP; | |
1175 | attr->sample_type &= ~PERF_SAMPLE_CALLCHAIN; | |
1176 | attr->sample_type &= ~PERF_SAMPLE_ADDR; | |
1177 | attr->sample_type &= ~PERF_SAMPLE_READ; | |
1178 | attr->mmap = 0; | |
1179 | attr->comm = 0; | |
1180 | attr->task = 0; | |
1181 | ||
1182 | attr->sample_period = 1; | |
1183 | ||
1184 | attr->watermark = 0; | |
1185 | attr->wakeup_events = 1000; | |
1186 | ||
1187 | /* will enable all once we are ready */ | |
1188 | attr->disabled = 1; | |
1189 | } | |
1190 | ||
1191 | err = perf_evlist__open(evlist); | |
1192 | if (err < 0) { | |
1193 | printf("Couldn't create the events: %s\n", strerror(errno)); | |
1194 | goto out; | |
bcf6edcd XG |
1195 | } |
1196 | ||
1afe1d14 DA |
1197 | if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { |
1198 | ui__error("Failed to mmap the events: %s\n", strerror(errno)); | |
1199 | perf_evlist__close(evlist); | |
1200 | goto out; | |
1201 | } | |
1202 | ||
1203 | rc = 0; | |
1204 | ||
1205 | out: | |
1206 | return rc; | |
bcf6edcd XG |
1207 | } |
1208 | ||
3786063a | 1209 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1210 | { |
bcf6edcd XG |
1211 | int ret; |
1212 | ||
de332ac4 DA |
1213 | struct perf_tool eops = { |
1214 | .sample = process_sample_event, | |
1215 | .comm = perf_event__process_comm, | |
1216 | .ordered_samples = true, | |
1217 | }; | |
1218 | ||
1219 | kvm->tool = eops; | |
1220 | kvm->session = perf_session__new(kvm->file_name, O_RDONLY, 0, false, | |
1221 | &kvm->tool); | |
1222 | if (!kvm->session) { | |
bcf6edcd XG |
1223 | pr_err("Initializing perf session failed\n"); |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
de332ac4 | 1227 | if (!perf_session__has_traces(kvm->session, "kvm record")) |
bcf6edcd XG |
1228 | return -EINVAL; |
1229 | ||
1230 | /* | |
1231 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1232 | * traced in the old kernel. | |
1233 | */ | |
1afe1d14 | 1234 | ret = cpu_isa_config(kvm); |
bcf6edcd XG |
1235 | if (ret < 0) |
1236 | return ret; | |
1237 | ||
de332ac4 | 1238 | return perf_session__process_events(kvm->session, &kvm->tool); |
bcf6edcd XG |
1239 | } |
1240 | ||
2e73f00f DA |
1241 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1242 | { | |
1243 | if (kvm->pid_str) { | |
1244 | kvm->pid_list = intlist__new(kvm->pid_str); | |
1245 | if (kvm->pid_list == NULL) { | |
1246 | pr_err("Error parsing process id string\n"); | |
1247 | return -EINVAL; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | return 0; | |
1252 | } | |
1253 | ||
3786063a | 1254 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1255 | { |
1256 | int ret = -EINVAL; | |
de332ac4 | 1257 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1258 | |
2e73f00f DA |
1259 | if (parse_target_str(kvm) != 0) |
1260 | goto exit; | |
1261 | ||
bcf6edcd XG |
1262 | if (!verify_vcpu(vcpu)) |
1263 | goto exit; | |
1264 | ||
de332ac4 | 1265 | if (!select_key(kvm)) |
bcf6edcd XG |
1266 | goto exit; |
1267 | ||
de332ac4 | 1268 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1269 | goto exit; |
1270 | ||
de332ac4 | 1271 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1272 | setup_pager(); |
1273 | ||
de332ac4 | 1274 | ret = read_events(kvm); |
bcf6edcd XG |
1275 | if (ret) |
1276 | goto exit; | |
1277 | ||
de332ac4 DA |
1278 | sort_result(kvm); |
1279 | print_result(kvm); | |
1280 | ||
bcf6edcd XG |
1281 | exit: |
1282 | return ret; | |
1283 | } | |
1284 | ||
8fdd84c4 DA |
1285 | static const char * const kvm_events_tp[] = { |
1286 | "kvm:kvm_entry", | |
1287 | "kvm:kvm_exit", | |
1288 | "kvm:kvm_mmio", | |
1289 | "kvm:kvm_pio", | |
bcf6edcd XG |
1290 | }; |
1291 | ||
1292 | #define STRDUP_FAIL_EXIT(s) \ | |
1293 | ({ char *_p; \ | |
1294 | _p = strdup(s); \ | |
1295 | if (!_p) \ | |
1296 | return -ENOMEM; \ | |
1297 | _p; \ | |
1298 | }) | |
1299 | ||
3786063a XG |
1300 | static int |
1301 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd XG |
1302 | { |
1303 | unsigned int rec_argc, i, j; | |
1304 | const char **rec_argv; | |
8fdd84c4 DA |
1305 | const char * const record_args[] = { |
1306 | "record", | |
1307 | "-R", | |
8fdd84c4 DA |
1308 | "-m", "1024", |
1309 | "-c", "1", | |
1310 | }; | |
bcf6edcd | 1311 | |
8fdd84c4 DA |
1312 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
1313 | 2 * ARRAY_SIZE(kvm_events_tp); | |
bcf6edcd XG |
1314 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1315 | ||
1316 | if (rec_argv == NULL) | |
1317 | return -ENOMEM; | |
1318 | ||
1319 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1320 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1321 | ||
8fdd84c4 DA |
1322 | for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { |
1323 | rec_argv[i++] = "-e"; | |
1324 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1325 | } | |
1326 | ||
bcf6edcd | 1327 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1328 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1329 | |
1330 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1331 | rec_argv[i] = argv[j]; | |
1332 | ||
1333 | return cmd_record(i, rec_argv, NULL); | |
1334 | } | |
1335 | ||
3786063a XG |
1336 | static int |
1337 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1338 | { |
1339 | const struct option kvm_events_report_options[] = { | |
1340 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
1341 | "event for reporting: vmexit, mmio, ioport"), | |
1342 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, | |
1343 | "vcpu id to report"), | |
1344 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1345 | "key for sorting: sample(sort by samples number)" | |
1346 | " time (sort by avg time)"), | |
2e73f00f DA |
1347 | OPT_STRING('p', "pid", &kvm->pid_str, "pid", |
1348 | "analyze events only for given process id(s)"), | |
de332ac4 DA |
1349 | OPT_END() |
1350 | }; | |
bcf6edcd | 1351 | |
de332ac4 DA |
1352 | const char * const kvm_events_report_usage[] = { |
1353 | "perf kvm stat report [<options>]", | |
1354 | NULL | |
1355 | }; | |
bcf6edcd | 1356 | |
bcf6edcd XG |
1357 | symbol__init(); |
1358 | ||
1359 | if (argc) { | |
1360 | argc = parse_options(argc, argv, | |
1361 | kvm_events_report_options, | |
1362 | kvm_events_report_usage, 0); | |
1363 | if (argc) | |
1364 | usage_with_options(kvm_events_report_usage, | |
1365 | kvm_events_report_options); | |
1366 | } | |
1367 | ||
de332ac4 | 1368 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1369 | } |
1370 | ||
1afe1d14 DA |
1371 | static struct perf_evlist *kvm_live_event_list(void) |
1372 | { | |
1373 | struct perf_evlist *evlist; | |
1374 | char *tp, *name, *sys; | |
1375 | unsigned int j; | |
1376 | int err = -1; | |
1377 | ||
1378 | evlist = perf_evlist__new(); | |
1379 | if (evlist == NULL) | |
1380 | return NULL; | |
1381 | ||
1382 | for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { | |
1383 | ||
1384 | tp = strdup(kvm_events_tp[j]); | |
1385 | if (tp == NULL) | |
1386 | goto out; | |
1387 | ||
1388 | /* split tracepoint into subsystem and name */ | |
1389 | sys = tp; | |
1390 | name = strchr(tp, ':'); | |
1391 | if (name == NULL) { | |
1392 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
1393 | kvm_events_tp[j]); | |
1394 | free(tp); | |
1395 | goto out; | |
1396 | } | |
1397 | *name = '\0'; | |
1398 | name++; | |
1399 | ||
1400 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
1401 | pr_err("Failed to add %s tracepoint to the list\n", kvm_events_tp[j]); | |
1402 | free(tp); | |
1403 | goto out; | |
1404 | } | |
1405 | ||
1406 | free(tp); | |
1407 | } | |
1408 | ||
1409 | err = 0; | |
1410 | ||
1411 | out: | |
1412 | if (err) { | |
1413 | perf_evlist__delete(evlist); | |
1414 | evlist = NULL; | |
1415 | } | |
1416 | ||
1417 | return evlist; | |
1418 | } | |
1419 | ||
1420 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1421 | int argc, const char **argv) | |
1422 | { | |
1423 | char errbuf[BUFSIZ]; | |
1424 | int err; | |
1425 | ||
1426 | const struct option live_options[] = { | |
1427 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1428 | "record events on existing process id"), | |
1429 | OPT_UINTEGER('m', "mmap-pages", &kvm->opts.mmap_pages, | |
1430 | "number of mmap data pages"), | |
1431 | OPT_INCR('v', "verbose", &verbose, | |
1432 | "be more verbose (show counter open errors, etc)"), | |
1433 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1434 | "system-wide collection from all CPUs"), | |
1435 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1436 | "time in seconds between display updates"), | |
1437 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
1438 | "event for reporting: vmexit, mmio, ioport"), | |
1439 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, | |
1440 | "vcpu id to report"), | |
1441 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1442 | "key for sorting: sample(sort by samples number)" | |
1443 | " time (sort by avg time)"), | |
70f7b4a7 DA |
1444 | OPT_U64(0, "duration", &kvm->duration, |
1445 | "show events other than HALT that take longer than duration usecs"), | |
1afe1d14 DA |
1446 | OPT_END() |
1447 | }; | |
1448 | const char * const live_usage[] = { | |
1449 | "perf kvm stat live [<options>]", | |
1450 | NULL | |
1451 | }; | |
1452 | ||
1453 | ||
1454 | /* event handling */ | |
1455 | kvm->tool.sample = process_sample_event; | |
1456 | kvm->tool.comm = perf_event__process_comm; | |
1457 | kvm->tool.exit = perf_event__process_exit; | |
1458 | kvm->tool.fork = perf_event__process_fork; | |
1459 | kvm->tool.lost = process_lost_event; | |
1460 | kvm->tool.ordered_samples = true; | |
1461 | perf_tool__fill_defaults(&kvm->tool); | |
1462 | ||
1463 | /* set defaults */ | |
1464 | kvm->display_time = 1; | |
1465 | kvm->opts.user_interval = 1; | |
1466 | kvm->opts.mmap_pages = 512; | |
1467 | kvm->opts.target.uses_mmap = false; | |
1468 | kvm->opts.target.uid_str = NULL; | |
1469 | kvm->opts.target.uid = UINT_MAX; | |
1470 | ||
1471 | symbol__init(); | |
1472 | disable_buildid_cache(); | |
1473 | ||
1474 | use_browser = 0; | |
1475 | setup_browser(false); | |
1476 | ||
1477 | if (argc) { | |
1478 | argc = parse_options(argc, argv, live_options, | |
1479 | live_usage, 0); | |
1480 | if (argc) | |
1481 | usage_with_options(live_usage, live_options); | |
1482 | } | |
1483 | ||
70f7b4a7 DA |
1484 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1485 | ||
1afe1d14 DA |
1486 | /* |
1487 | * target related setups | |
1488 | */ | |
1489 | err = perf_target__validate(&kvm->opts.target); | |
1490 | if (err) { | |
1491 | perf_target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); | |
1492 | ui__warning("%s", errbuf); | |
1493 | } | |
1494 | ||
1495 | if (perf_target__none(&kvm->opts.target)) | |
1496 | kvm->opts.target.system_wide = true; | |
1497 | ||
1498 | ||
1499 | /* | |
1500 | * generate the event list | |
1501 | */ | |
1502 | kvm->evlist = kvm_live_event_list(); | |
1503 | if (kvm->evlist == NULL) { | |
1504 | err = -1; | |
1505 | goto out; | |
1506 | } | |
1507 | ||
1508 | symbol_conf.nr_events = kvm->evlist->nr_entries; | |
1509 | ||
1510 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) | |
1511 | usage_with_options(live_usage, live_options); | |
1512 | ||
1513 | /* | |
1514 | * perf session | |
1515 | */ | |
1516 | kvm->session = perf_session__new(NULL, O_WRONLY, false, false, &kvm->tool); | |
1517 | if (kvm->session == NULL) { | |
1518 | err = -ENOMEM; | |
1519 | goto out; | |
1520 | } | |
1521 | kvm->session->evlist = kvm->evlist; | |
1522 | perf_session__set_id_hdr_size(kvm->session); | |
1523 | ||
1524 | ||
1525 | if (perf_target__has_task(&kvm->opts.target)) | |
1526 | perf_event__synthesize_thread_map(&kvm->tool, | |
1527 | kvm->evlist->threads, | |
1528 | perf_event__process, | |
1529 | &kvm->session->machines.host); | |
1530 | else | |
1531 | perf_event__synthesize_threads(&kvm->tool, perf_event__process, | |
1532 | &kvm->session->machines.host); | |
1533 | ||
1534 | ||
1535 | err = kvm_live_open_events(kvm); | |
1536 | if (err) | |
1537 | goto out; | |
1538 | ||
1539 | err = kvm_events_live_report(kvm); | |
1540 | ||
1541 | out: | |
1542 | exit_browser(0); | |
1543 | ||
1544 | if (kvm->session) | |
1545 | perf_session__delete(kvm->session); | |
1546 | kvm->session = NULL; | |
1547 | if (kvm->evlist) { | |
1548 | perf_evlist__delete_maps(kvm->evlist); | |
1549 | perf_evlist__delete(kvm->evlist); | |
1550 | } | |
1551 | ||
1552 | return err; | |
1553 | } | |
1554 | ||
bcf6edcd XG |
1555 | static void print_kvm_stat_usage(void) |
1556 | { | |
1557 | printf("Usage: perf kvm stat <command>\n\n"); | |
1558 | ||
1559 | printf("# Available commands:\n"); | |
1560 | printf("\trecord: record kvm events\n"); | |
1561 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1562 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1563 | |
1564 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1565 | } | |
1566 | ||
3786063a | 1567 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1568 | { |
3786063a XG |
1569 | struct perf_kvm_stat kvm = { |
1570 | .file_name = file_name, | |
1571 | ||
1572 | .trace_vcpu = -1, | |
1573 | .report_event = "vmexit", | |
1574 | .sort_key = "sample", | |
1575 | ||
1576 | .exit_reasons = svm_exit_reasons, | |
1577 | .exit_reasons_size = ARRAY_SIZE(svm_exit_reasons), | |
1578 | .exit_reasons_isa = "SVM", | |
1579 | }; | |
1580 | ||
bcf6edcd XG |
1581 | if (argc == 1) { |
1582 | print_kvm_stat_usage(); | |
1583 | goto perf_stat; | |
1584 | } | |
1585 | ||
1586 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1587 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1588 | |
1589 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1590 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1591 | |
1afe1d14 DA |
1592 | if (!strncmp(argv[1], "live", 4)) |
1593 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
1594 | ||
bcf6edcd XG |
1595 | perf_stat: |
1596 | return cmd_stat(argc, argv, NULL); | |
1597 | } | |
7321090f | 1598 | #endif |
bcf6edcd | 1599 | |
3786063a | 1600 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1601 | { |
1602 | int rec_argc, i = 0, j; | |
1603 | const char **rec_argv; | |
1604 | ||
1605 | rec_argc = argc + 2; | |
1606 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1607 | rec_argv[i++] = strdup("record"); | |
1608 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1609 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1610 | for (j = 1; j < argc; j++, i++) |
1611 | rec_argv[i] = argv[j]; | |
1612 | ||
1613 | BUG_ON(i != rec_argc); | |
1614 | ||
1615 | return cmd_record(i, rec_argv, NULL); | |
1616 | } | |
1617 | ||
3786063a | 1618 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1619 | { |
1620 | int rec_argc, i = 0, j; | |
1621 | const char **rec_argv; | |
1622 | ||
1623 | rec_argc = argc + 2; | |
1624 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1625 | rec_argv[i++] = strdup("report"); | |
1626 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1627 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1628 | for (j = 1; j < argc; j++, i++) |
1629 | rec_argv[i] = argv[j]; | |
1630 | ||
1631 | BUG_ON(i != rec_argc); | |
1632 | ||
1633 | return cmd_report(i, rec_argv, NULL); | |
1634 | } | |
1635 | ||
3786063a XG |
1636 | static int |
1637 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1638 | { |
1639 | int rec_argc, i = 0, j; | |
1640 | const char **rec_argv; | |
1641 | ||
1642 | rec_argc = argc + 2; | |
1643 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1644 | rec_argv[i++] = strdup("buildid-list"); | |
1645 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1646 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1647 | for (j = 1; j < argc; j++, i++) |
1648 | rec_argv[i] = argv[j]; | |
1649 | ||
1650 | BUG_ON(i != rec_argc); | |
1651 | ||
1652 | return cmd_buildid_list(i, rec_argv, NULL); | |
1653 | } | |
1654 | ||
1d037ca1 | 1655 | int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused) |
a1645ce1 | 1656 | { |
20914ce5 | 1657 | const char *file_name = NULL; |
de332ac4 | 1658 | const struct option kvm_options[] = { |
3786063a | 1659 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1660 | "Input file name"), |
3786063a | 1661 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1662 | "Output file name"), |
1663 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1664 | "Collect guest os data"), | |
1665 | OPT_BOOLEAN(0, "host", &perf_host, | |
1666 | "Collect host os data"), | |
1667 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1668 | "guest mount directory under which every guest os" | |
1669 | " instance has a subdir"), | |
1670 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1671 | "file", "file saving guest os vmlinux"), | |
1672 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1673 | "file", "file saving guest os /proc/kallsyms"), | |
1674 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1675 | "file", "file saving guest os /proc/modules"), | |
1676 | OPT_END() | |
1677 | }; | |
1678 | ||
1679 | ||
1680 | const char * const kvm_usage[] = { | |
1681 | "perf kvm [<options>] {top|record|report|diff|buildid-list|stat}", | |
1682 | NULL | |
1683 | }; | |
1684 | ||
1aed2671 JR |
1685 | perf_host = 0; |
1686 | perf_guest = 1; | |
a1645ce1 ZY |
1687 | |
1688 | argc = parse_options(argc, argv, kvm_options, kvm_usage, | |
1689 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1690 | if (!argc) | |
1691 | usage_with_options(kvm_usage, kvm_options); | |
1692 | ||
1693 | if (!perf_host) | |
1694 | perf_guest = 1; | |
1695 | ||
3786063a | 1696 | if (!file_name) { |
a1645ce1 | 1697 | if (perf_host && !perf_guest) |
3786063a | 1698 | file_name = strdup("perf.data.host"); |
a1645ce1 | 1699 | else if (!perf_host && perf_guest) |
3786063a | 1700 | file_name = strdup("perf.data.guest"); |
a1645ce1 | 1701 | else |
3786063a | 1702 | file_name = strdup("perf.data.kvm"); |
de332ac4 | 1703 | |
3786063a | 1704 | if (!file_name) { |
de332ac4 DA |
1705 | pr_err("Failed to allocate memory for filename\n"); |
1706 | return -ENOMEM; | |
1707 | } | |
a1645ce1 ZY |
1708 | } |
1709 | ||
1710 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1711 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1712 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1713 | return __cmd_report(file_name, argc, argv); |
a1645ce1 ZY |
1714 | else if (!strncmp(argv[0], "diff", 4)) |
1715 | return cmd_diff(argc, argv, NULL); | |
1716 | else if (!strncmp(argv[0], "top", 3)) | |
1717 | return cmd_top(argc, argv, NULL); | |
1718 | else if (!strncmp(argv[0], "buildid-list", 12)) | |
3786063a | 1719 | return __cmd_buildid_list(file_name, argc, argv); |
7321090f | 1720 | #if defined(__i386__) || defined(__x86_64__) |
bcf6edcd | 1721 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1722 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1723 | #endif |
a1645ce1 ZY |
1724 | else |
1725 | usage_with_options(kvm_usage, kvm_options); | |
1726 | ||
1727 | return 0; | |
1728 | } |