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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" |
553873e1 | 16 | #include <api/fs/debugfs.h> |
bcf6edcd XG |
17 | #include "util/tool.h" |
18 | #include "util/stat.h" | |
1afe1d14 | 19 | #include "util/top.h" |
f5fc1412 | 20 | #include "util/data.h" |
a1645ce1 ZY |
21 | |
22 | #include <sys/prctl.h> | |
87419c9a | 23 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 | 24 | #include <sys/timerfd.h> |
87419c9a | 25 | #endif |
a1645ce1 | 26 | |
1afe1d14 | 27 | #include <termios.h> |
a1645ce1 ZY |
28 | #include <semaphore.h> |
29 | #include <pthread.h> | |
30 | #include <math.h> | |
31 | ||
7321090f | 32 | #if defined(__i386__) || defined(__x86_64__) |
d2709c7c DH |
33 | #include <asm/svm.h> |
34 | #include <asm/vmx.h> | |
35 | #include <asm/kvm.h> | |
bcf6edcd XG |
36 | |
37 | struct event_key { | |
38 | #define INVALID_KEY (~0ULL) | |
39 | u64 key; | |
40 | int info; | |
41 | }; | |
42 | ||
de332ac4 DA |
43 | struct kvm_event_stats { |
44 | u64 time; | |
45 | struct stats stats; | |
46 | }; | |
47 | ||
48 | struct kvm_event { | |
49 | struct list_head hash_entry; | |
50 | struct rb_node rb; | |
51 | ||
52 | struct event_key key; | |
53 | ||
54 | struct kvm_event_stats total; | |
55 | ||
56 | #define DEFAULT_VCPU_NUM 8 | |
57 | int max_vcpu; | |
58 | struct kvm_event_stats *vcpu; | |
59 | }; | |
60 | ||
61 | typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int); | |
62 | ||
63 | struct kvm_event_key { | |
64 | const char *name; | |
65 | key_cmp_fun key; | |
66 | }; | |
67 | ||
68 | ||
3786063a | 69 | struct perf_kvm_stat; |
de332ac4 | 70 | |
bcf6edcd | 71 | struct kvm_events_ops { |
14907e73 ACM |
72 | bool (*is_begin_event)(struct perf_evsel *evsel, |
73 | struct perf_sample *sample, | |
74 | struct event_key *key); | |
75 | bool (*is_end_event)(struct perf_evsel *evsel, | |
76 | struct perf_sample *sample, struct event_key *key); | |
3786063a | 77 | void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key, |
de332ac4 | 78 | char decode[20]); |
bcf6edcd XG |
79 | const char *name; |
80 | }; | |
81 | ||
de332ac4 DA |
82 | struct exit_reasons_table { |
83 | unsigned long exit_code; | |
84 | const char *reason; | |
85 | }; | |
86 | ||
87 | #define EVENTS_BITS 12 | |
88 | #define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS) | |
89 | ||
3786063a | 90 | struct perf_kvm_stat { |
de332ac4 | 91 | struct perf_tool tool; |
b4006796 | 92 | struct record_opts opts; |
1afe1d14 | 93 | struct perf_evlist *evlist; |
de332ac4 DA |
94 | struct perf_session *session; |
95 | ||
96 | const char *file_name; | |
97 | const char *report_event; | |
98 | const char *sort_key; | |
99 | int trace_vcpu; | |
100 | ||
101 | struct exit_reasons_table *exit_reasons; | |
102 | int exit_reasons_size; | |
103 | const char *exit_reasons_isa; | |
104 | ||
105 | struct kvm_events_ops *events_ops; | |
106 | key_cmp_fun compare; | |
107 | struct list_head kvm_events_cache[EVENTS_CACHE_SIZE]; | |
1afe1d14 | 108 | |
de332ac4 DA |
109 | u64 total_time; |
110 | u64 total_count; | |
1afe1d14 | 111 | u64 lost_events; |
70f7b4a7 | 112 | u64 duration; |
de332ac4 | 113 | |
2e73f00f DA |
114 | const char *pid_str; |
115 | struct intlist *pid_list; | |
116 | ||
de332ac4 | 117 | struct rb_root result; |
1afe1d14 DA |
118 | |
119 | int timerfd; | |
120 | unsigned int display_time; | |
121 | bool live; | |
de332ac4 DA |
122 | }; |
123 | ||
124 | ||
14907e73 ACM |
125 | static void exit_event_get_key(struct perf_evsel *evsel, |
126 | struct perf_sample *sample, | |
127 | struct event_key *key) | |
bcf6edcd XG |
128 | { |
129 | key->info = 0; | |
14907e73 | 130 | key->key = perf_evsel__intval(evsel, sample, "exit_reason"); |
bcf6edcd XG |
131 | } |
132 | ||
14907e73 | 133 | static bool kvm_exit_event(struct perf_evsel *evsel) |
bcf6edcd | 134 | { |
14907e73 | 135 | return !strcmp(evsel->name, "kvm:kvm_exit"); |
bcf6edcd XG |
136 | } |
137 | ||
14907e73 ACM |
138 | static bool exit_event_begin(struct perf_evsel *evsel, |
139 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd | 140 | { |
14907e73 ACM |
141 | if (kvm_exit_event(evsel)) { |
142 | exit_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
143 | return true; |
144 | } | |
145 | ||
146 | return false; | |
147 | } | |
148 | ||
14907e73 | 149 | static bool kvm_entry_event(struct perf_evsel *evsel) |
bcf6edcd | 150 | { |
14907e73 | 151 | return !strcmp(evsel->name, "kvm:kvm_entry"); |
bcf6edcd XG |
152 | } |
153 | ||
14907e73 ACM |
154 | static bool exit_event_end(struct perf_evsel *evsel, |
155 | struct perf_sample *sample __maybe_unused, | |
156 | struct event_key *key __maybe_unused) | |
bcf6edcd | 157 | { |
14907e73 | 158 | return kvm_entry_event(evsel); |
bcf6edcd XG |
159 | } |
160 | ||
de332ac4 | 161 | static struct exit_reasons_table vmx_exit_reasons[] = { |
bcf6edcd XG |
162 | VMX_EXIT_REASONS |
163 | }; | |
164 | ||
de332ac4 | 165 | static struct exit_reasons_table svm_exit_reasons[] = { |
bcf6edcd XG |
166 | SVM_EXIT_REASONS |
167 | }; | |
168 | ||
3786063a | 169 | static const char *get_exit_reason(struct perf_kvm_stat *kvm, u64 exit_code) |
bcf6edcd | 170 | { |
de332ac4 DA |
171 | int i = kvm->exit_reasons_size; |
172 | struct exit_reasons_table *tbl = kvm->exit_reasons; | |
bcf6edcd | 173 | |
de332ac4 DA |
174 | while (i--) { |
175 | if (tbl->exit_code == exit_code) | |
176 | return tbl->reason; | |
177 | tbl++; | |
bcf6edcd XG |
178 | } |
179 | ||
180 | pr_err("unknown kvm exit code:%lld on %s\n", | |
de332ac4 | 181 | (unsigned long long)exit_code, kvm->exit_reasons_isa); |
bcf6edcd XG |
182 | return "UNKNOWN"; |
183 | } | |
184 | ||
3786063a | 185 | static void exit_event_decode_key(struct perf_kvm_stat *kvm, |
de332ac4 DA |
186 | struct event_key *key, |
187 | char decode[20]) | |
bcf6edcd | 188 | { |
de332ac4 | 189 | const char *exit_reason = get_exit_reason(kvm, key->key); |
bcf6edcd XG |
190 | |
191 | scnprintf(decode, 20, "%s", exit_reason); | |
192 | } | |
193 | ||
194 | static struct kvm_events_ops exit_events = { | |
195 | .is_begin_event = exit_event_begin, | |
196 | .is_end_event = exit_event_end, | |
197 | .decode_key = exit_event_decode_key, | |
198 | .name = "VM-EXIT" | |
199 | }; | |
200 | ||
de332ac4 DA |
201 | /* |
202 | * For the mmio events, we treat: | |
203 | * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry | |
204 | * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...). | |
205 | */ | |
14907e73 ACM |
206 | static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample, |
207 | struct event_key *key) | |
bcf6edcd | 208 | { |
14907e73 ACM |
209 | key->key = perf_evsel__intval(evsel, sample, "gpa"); |
210 | key->info = perf_evsel__intval(evsel, sample, "type"); | |
bcf6edcd XG |
211 | } |
212 | ||
213 | #define KVM_TRACE_MMIO_READ_UNSATISFIED 0 | |
214 | #define KVM_TRACE_MMIO_READ 1 | |
215 | #define KVM_TRACE_MMIO_WRITE 2 | |
216 | ||
14907e73 ACM |
217 | static bool mmio_event_begin(struct perf_evsel *evsel, |
218 | struct perf_sample *sample, struct event_key *key) | |
bcf6edcd XG |
219 | { |
220 | /* MMIO read begin event in kernel. */ | |
14907e73 | 221 | if (kvm_exit_event(evsel)) |
bcf6edcd XG |
222 | return true; |
223 | ||
224 | /* MMIO write begin event in kernel. */ | |
14907e73 ACM |
225 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
226 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) { | |
227 | mmio_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
228 | return true; |
229 | } | |
230 | ||
231 | return false; | |
232 | } | |
233 | ||
14907e73 ACM |
234 | static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample, |
235 | struct event_key *key) | |
bcf6edcd XG |
236 | { |
237 | /* MMIO write end event in kernel. */ | |
14907e73 | 238 | if (kvm_entry_event(evsel)) |
bcf6edcd XG |
239 | return true; |
240 | ||
241 | /* MMIO read end event in kernel.*/ | |
14907e73 ACM |
242 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
243 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) { | |
244 | mmio_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
245 | return true; |
246 | } | |
247 | ||
248 | return false; | |
249 | } | |
250 | ||
3786063a | 251 | static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
de332ac4 DA |
252 | struct event_key *key, |
253 | char decode[20]) | |
bcf6edcd XG |
254 | { |
255 | scnprintf(decode, 20, "%#lx:%s", (unsigned long)key->key, | |
256 | key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R"); | |
257 | } | |
258 | ||
259 | static struct kvm_events_ops mmio_events = { | |
260 | .is_begin_event = mmio_event_begin, | |
261 | .is_end_event = mmio_event_end, | |
262 | .decode_key = mmio_event_decode_key, | |
263 | .name = "MMIO Access" | |
264 | }; | |
265 | ||
266 | /* The time of emulation pio access is from kvm_pio to kvm_entry. */ | |
14907e73 ACM |
267 | static void ioport_event_get_key(struct perf_evsel *evsel, |
268 | struct perf_sample *sample, | |
269 | struct event_key *key) | |
bcf6edcd | 270 | { |
14907e73 ACM |
271 | key->key = perf_evsel__intval(evsel, sample, "port"); |
272 | key->info = perf_evsel__intval(evsel, sample, "rw"); | |
bcf6edcd XG |
273 | } |
274 | ||
14907e73 ACM |
275 | static bool ioport_event_begin(struct perf_evsel *evsel, |
276 | struct perf_sample *sample, | |
277 | struct event_key *key) | |
bcf6edcd | 278 | { |
14907e73 ACM |
279 | if (!strcmp(evsel->name, "kvm:kvm_pio")) { |
280 | ioport_event_get_key(evsel, sample, key); | |
bcf6edcd XG |
281 | return true; |
282 | } | |
283 | ||
284 | return false; | |
285 | } | |
286 | ||
14907e73 ACM |
287 | static bool ioport_event_end(struct perf_evsel *evsel, |
288 | struct perf_sample *sample __maybe_unused, | |
bcf6edcd XG |
289 | struct event_key *key __maybe_unused) |
290 | { | |
14907e73 | 291 | return kvm_entry_event(evsel); |
bcf6edcd XG |
292 | } |
293 | ||
3786063a | 294 | static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
de332ac4 DA |
295 | struct event_key *key, |
296 | char decode[20]) | |
bcf6edcd XG |
297 | { |
298 | scnprintf(decode, 20, "%#llx:%s", (unsigned long long)key->key, | |
299 | key->info ? "POUT" : "PIN"); | |
300 | } | |
301 | ||
302 | static struct kvm_events_ops ioport_events = { | |
303 | .is_begin_event = ioport_event_begin, | |
304 | .is_end_event = ioport_event_end, | |
305 | .decode_key = ioport_event_decode_key, | |
306 | .name = "IO Port Access" | |
307 | }; | |
308 | ||
3786063a | 309 | static bool register_kvm_events_ops(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
310 | { |
311 | bool ret = true; | |
312 | ||
de332ac4 DA |
313 | if (!strcmp(kvm->report_event, "vmexit")) |
314 | kvm->events_ops = &exit_events; | |
315 | else if (!strcmp(kvm->report_event, "mmio")) | |
316 | kvm->events_ops = &mmio_events; | |
317 | else if (!strcmp(kvm->report_event, "ioport")) | |
318 | kvm->events_ops = &ioport_events; | |
bcf6edcd | 319 | else { |
de332ac4 | 320 | pr_err("Unknown report event:%s\n", kvm->report_event); |
bcf6edcd XG |
321 | ret = false; |
322 | } | |
323 | ||
324 | return ret; | |
325 | } | |
326 | ||
bcf6edcd XG |
327 | struct vcpu_event_record { |
328 | int vcpu_id; | |
329 | u64 start_time; | |
330 | struct kvm_event *last_event; | |
331 | }; | |
332 | ||
bcf6edcd | 333 | |
3786063a | 334 | static void init_kvm_event_record(struct perf_kvm_stat *kvm) |
bcf6edcd | 335 | { |
b880deea | 336 | unsigned int i; |
bcf6edcd | 337 | |
b880deea | 338 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) |
de332ac4 | 339 | INIT_LIST_HEAD(&kvm->kvm_events_cache[i]); |
bcf6edcd XG |
340 | } |
341 | ||
87419c9a | 342 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
343 | static void clear_events_cache_stats(struct list_head *kvm_events_cache) |
344 | { | |
345 | struct list_head *head; | |
346 | struct kvm_event *event; | |
347 | unsigned int i; | |
62d04dbf | 348 | int j; |
1afe1d14 DA |
349 | |
350 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { | |
351 | head = &kvm_events_cache[i]; | |
352 | list_for_each_entry(event, head, hash_entry) { | |
353 | /* reset stats for event */ | |
62d04dbf DA |
354 | event->total.time = 0; |
355 | init_stats(&event->total.stats); | |
356 | ||
357 | for (j = 0; j < event->max_vcpu; ++j) { | |
358 | event->vcpu[j].time = 0; | |
359 | init_stats(&event->vcpu[j].stats); | |
360 | } | |
1afe1d14 DA |
361 | } |
362 | } | |
363 | } | |
87419c9a | 364 | #endif |
1afe1d14 | 365 | |
bcf6edcd XG |
366 | static int kvm_events_hash_fn(u64 key) |
367 | { | |
368 | return key & (EVENTS_CACHE_SIZE - 1); | |
369 | } | |
370 | ||
371 | static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) | |
372 | { | |
373 | int old_max_vcpu = event->max_vcpu; | |
6ca5f308 | 374 | void *prev; |
bcf6edcd XG |
375 | |
376 | if (vcpu_id < event->max_vcpu) | |
377 | return true; | |
378 | ||
379 | while (event->max_vcpu <= vcpu_id) | |
380 | event->max_vcpu += DEFAULT_VCPU_NUM; | |
381 | ||
6ca5f308 | 382 | prev = event->vcpu; |
bcf6edcd XG |
383 | event->vcpu = realloc(event->vcpu, |
384 | event->max_vcpu * sizeof(*event->vcpu)); | |
385 | if (!event->vcpu) { | |
6ca5f308 | 386 | free(prev); |
bcf6edcd XG |
387 | pr_err("Not enough memory\n"); |
388 | return false; | |
389 | } | |
390 | ||
391 | memset(event->vcpu + old_max_vcpu, 0, | |
392 | (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu)); | |
393 | return true; | |
394 | } | |
395 | ||
396 | static struct kvm_event *kvm_alloc_init_event(struct event_key *key) | |
397 | { | |
398 | struct kvm_event *event; | |
399 | ||
400 | event = zalloc(sizeof(*event)); | |
401 | if (!event) { | |
402 | pr_err("Not enough memory\n"); | |
403 | return NULL; | |
404 | } | |
405 | ||
406 | event->key = *key; | |
407 | return event; | |
408 | } | |
409 | ||
3786063a | 410 | static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 | 411 | struct event_key *key) |
bcf6edcd XG |
412 | { |
413 | struct kvm_event *event; | |
414 | struct list_head *head; | |
415 | ||
416 | BUG_ON(key->key == INVALID_KEY); | |
417 | ||
de332ac4 | 418 | head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)]; |
355afe81 | 419 | list_for_each_entry(event, head, hash_entry) { |
bcf6edcd XG |
420 | if (event->key.key == key->key && event->key.info == key->info) |
421 | return event; | |
355afe81 | 422 | } |
bcf6edcd XG |
423 | |
424 | event = kvm_alloc_init_event(key); | |
425 | if (!event) | |
426 | return NULL; | |
427 | ||
428 | list_add(&event->hash_entry, head); | |
429 | return event; | |
430 | } | |
431 | ||
3786063a | 432 | static bool handle_begin_event(struct perf_kvm_stat *kvm, |
de332ac4 | 433 | struct vcpu_event_record *vcpu_record, |
bcf6edcd XG |
434 | struct event_key *key, u64 timestamp) |
435 | { | |
436 | struct kvm_event *event = NULL; | |
437 | ||
438 | if (key->key != INVALID_KEY) | |
de332ac4 | 439 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
440 | |
441 | vcpu_record->last_event = event; | |
442 | vcpu_record->start_time = timestamp; | |
443 | return true; | |
444 | } | |
445 | ||
446 | static void | |
447 | kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff) | |
448 | { | |
449 | kvm_stats->time += time_diff; | |
450 | update_stats(&kvm_stats->stats, time_diff); | |
451 | } | |
452 | ||
453 | static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event) | |
454 | { | |
455 | struct kvm_event_stats *kvm_stats = &event->total; | |
456 | ||
457 | if (vcpu_id != -1) | |
458 | kvm_stats = &event->vcpu[vcpu_id]; | |
459 | ||
460 | return rel_stddev_stats(stddev_stats(&kvm_stats->stats), | |
461 | avg_stats(&kvm_stats->stats)); | |
462 | } | |
463 | ||
464 | static bool update_kvm_event(struct kvm_event *event, int vcpu_id, | |
465 | u64 time_diff) | |
466 | { | |
2aa8eab0 DA |
467 | if (vcpu_id == -1) { |
468 | kvm_update_event_stats(&event->total, time_diff); | |
469 | return true; | |
470 | } | |
bcf6edcd XG |
471 | |
472 | if (!kvm_event_expand(event, vcpu_id)) | |
473 | return false; | |
474 | ||
475 | kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff); | |
476 | return true; | |
477 | } | |
478 | ||
3786063a | 479 | static bool handle_end_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
480 | struct vcpu_event_record *vcpu_record, |
481 | struct event_key *key, | |
70f7b4a7 | 482 | struct perf_sample *sample) |
bcf6edcd XG |
483 | { |
484 | struct kvm_event *event; | |
485 | u64 time_begin, time_diff; | |
2aa8eab0 DA |
486 | int vcpu; |
487 | ||
488 | if (kvm->trace_vcpu == -1) | |
489 | vcpu = -1; | |
490 | else | |
491 | vcpu = vcpu_record->vcpu_id; | |
bcf6edcd XG |
492 | |
493 | event = vcpu_record->last_event; | |
494 | time_begin = vcpu_record->start_time; | |
495 | ||
496 | /* The begin event is not caught. */ | |
497 | if (!time_begin) | |
498 | return true; | |
499 | ||
500 | /* | |
501 | * In some case, the 'begin event' only records the start timestamp, | |
502 | * the actual event is recognized in the 'end event' (e.g. mmio-event). | |
503 | */ | |
504 | ||
505 | /* Both begin and end events did not get the key. */ | |
506 | if (!event && key->key == INVALID_KEY) | |
507 | return true; | |
508 | ||
509 | if (!event) | |
de332ac4 | 510 | event = find_create_kvm_event(kvm, key); |
bcf6edcd XG |
511 | |
512 | if (!event) | |
513 | return false; | |
514 | ||
515 | vcpu_record->last_event = NULL; | |
516 | vcpu_record->start_time = 0; | |
517 | ||
1afe1d14 | 518 | /* seems to happen once in a while during live mode */ |
70f7b4a7 | 519 | if (sample->time < time_begin) { |
1afe1d14 DA |
520 | pr_debug("End time before begin time; skipping event.\n"); |
521 | return true; | |
522 | } | |
bcf6edcd | 523 | |
70f7b4a7 DA |
524 | time_diff = sample->time - time_begin; |
525 | ||
526 | if (kvm->duration && time_diff > kvm->duration) { | |
527 | char decode[32]; | |
528 | ||
529 | kvm->events_ops->decode_key(kvm, &event->key, decode); | |
530 | if (strcmp(decode, "HLT")) { | |
531 | pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n", | |
532 | sample->time, sample->pid, vcpu_record->vcpu_id, | |
533 | decode, time_diff/1000); | |
534 | } | |
535 | } | |
536 | ||
2aa8eab0 | 537 | return update_kvm_event(event, vcpu, time_diff); |
bcf6edcd XG |
538 | } |
539 | ||
14907e73 ACM |
540 | static |
541 | struct vcpu_event_record *per_vcpu_record(struct thread *thread, | |
542 | struct perf_evsel *evsel, | |
543 | struct perf_sample *sample) | |
bcf6edcd XG |
544 | { |
545 | /* Only kvm_entry records vcpu id. */ | |
14907e73 | 546 | if (!thread->priv && kvm_entry_event(evsel)) { |
bcf6edcd XG |
547 | struct vcpu_event_record *vcpu_record; |
548 | ||
14907e73 | 549 | vcpu_record = zalloc(sizeof(*vcpu_record)); |
bcf6edcd | 550 | if (!vcpu_record) { |
14907e73 | 551 | pr_err("%s: Not enough memory\n", __func__); |
bcf6edcd XG |
552 | return NULL; |
553 | } | |
554 | ||
14907e73 | 555 | vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, "vcpu_id"); |
bcf6edcd XG |
556 | thread->priv = vcpu_record; |
557 | } | |
558 | ||
14907e73 | 559 | return thread->priv; |
bcf6edcd XG |
560 | } |
561 | ||
3786063a | 562 | static bool handle_kvm_event(struct perf_kvm_stat *kvm, |
de332ac4 DA |
563 | struct thread *thread, |
564 | struct perf_evsel *evsel, | |
14907e73 | 565 | struct perf_sample *sample) |
bcf6edcd XG |
566 | { |
567 | struct vcpu_event_record *vcpu_record; | |
568 | struct event_key key = {.key = INVALID_KEY}; | |
569 | ||
14907e73 | 570 | vcpu_record = per_vcpu_record(thread, evsel, sample); |
bcf6edcd XG |
571 | if (!vcpu_record) |
572 | return true; | |
573 | ||
2aa8eab0 DA |
574 | /* only process events for vcpus user cares about */ |
575 | if ((kvm->trace_vcpu != -1) && | |
576 | (kvm->trace_vcpu != vcpu_record->vcpu_id)) | |
577 | return true; | |
578 | ||
de332ac4 DA |
579 | if (kvm->events_ops->is_begin_event(evsel, sample, &key)) |
580 | return handle_begin_event(kvm, vcpu_record, &key, sample->time); | |
bcf6edcd | 581 | |
de332ac4 | 582 | if (kvm->events_ops->is_end_event(evsel, sample, &key)) |
70f7b4a7 | 583 | return handle_end_event(kvm, vcpu_record, &key, sample); |
bcf6edcd XG |
584 | |
585 | return true; | |
586 | } | |
587 | ||
bcf6edcd XG |
588 | #define GET_EVENT_KEY(func, field) \ |
589 | static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \ | |
590 | { \ | |
591 | if (vcpu == -1) \ | |
592 | return event->total.field; \ | |
593 | \ | |
594 | if (vcpu >= event->max_vcpu) \ | |
595 | return 0; \ | |
596 | \ | |
597 | return event->vcpu[vcpu].field; \ | |
598 | } | |
599 | ||
600 | #define COMPARE_EVENT_KEY(func, field) \ | |
601 | GET_EVENT_KEY(func, field) \ | |
602 | static int compare_kvm_event_ ## func(struct kvm_event *one, \ | |
603 | struct kvm_event *two, int vcpu)\ | |
604 | { \ | |
605 | return get_event_ ##func(one, vcpu) > \ | |
606 | get_event_ ##func(two, vcpu); \ | |
607 | } | |
608 | ||
609 | GET_EVENT_KEY(time, time); | |
610 | COMPARE_EVENT_KEY(count, stats.n); | |
611 | COMPARE_EVENT_KEY(mean, stats.mean); | |
62d04dbf DA |
612 | GET_EVENT_KEY(max, stats.max); |
613 | GET_EVENT_KEY(min, stats.min); | |
bcf6edcd XG |
614 | |
615 | #define DEF_SORT_NAME_KEY(name, compare_key) \ | |
616 | { #name, compare_kvm_event_ ## compare_key } | |
617 | ||
618 | static struct kvm_event_key keys[] = { | |
619 | DEF_SORT_NAME_KEY(sample, count), | |
620 | DEF_SORT_NAME_KEY(time, mean), | |
621 | { NULL, NULL } | |
622 | }; | |
623 | ||
3786063a | 624 | static bool select_key(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
625 | { |
626 | int i; | |
627 | ||
628 | for (i = 0; keys[i].name; i++) { | |
de332ac4 DA |
629 | if (!strcmp(keys[i].name, kvm->sort_key)) { |
630 | kvm->compare = keys[i].key; | |
bcf6edcd XG |
631 | return true; |
632 | } | |
633 | } | |
634 | ||
de332ac4 | 635 | pr_err("Unknown compare key:%s\n", kvm->sort_key); |
bcf6edcd XG |
636 | return false; |
637 | } | |
638 | ||
de332ac4 DA |
639 | static void insert_to_result(struct rb_root *result, struct kvm_event *event, |
640 | key_cmp_fun bigger, int vcpu) | |
bcf6edcd | 641 | { |
de332ac4 | 642 | struct rb_node **rb = &result->rb_node; |
bcf6edcd XG |
643 | struct rb_node *parent = NULL; |
644 | struct kvm_event *p; | |
645 | ||
646 | while (*rb) { | |
647 | p = container_of(*rb, struct kvm_event, rb); | |
648 | parent = *rb; | |
649 | ||
650 | if (bigger(event, p, vcpu)) | |
651 | rb = &(*rb)->rb_left; | |
652 | else | |
653 | rb = &(*rb)->rb_right; | |
654 | } | |
655 | ||
656 | rb_link_node(&event->rb, parent, rb); | |
de332ac4 | 657 | rb_insert_color(&event->rb, result); |
bcf6edcd XG |
658 | } |
659 | ||
3786063a XG |
660 | static void |
661 | update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event) | |
bcf6edcd | 662 | { |
de332ac4 DA |
663 | int vcpu = kvm->trace_vcpu; |
664 | ||
665 | kvm->total_count += get_event_count(event, vcpu); | |
666 | kvm->total_time += get_event_time(event, vcpu); | |
bcf6edcd XG |
667 | } |
668 | ||
669 | static bool event_is_valid(struct kvm_event *event, int vcpu) | |
670 | { | |
671 | return !!get_event_count(event, vcpu); | |
672 | } | |
673 | ||
3786063a | 674 | static void sort_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
675 | { |
676 | unsigned int i; | |
de332ac4 | 677 | int vcpu = kvm->trace_vcpu; |
bcf6edcd XG |
678 | struct kvm_event *event; |
679 | ||
355afe81 DA |
680 | for (i = 0; i < EVENTS_CACHE_SIZE; i++) { |
681 | list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) { | |
bcf6edcd | 682 | if (event_is_valid(event, vcpu)) { |
de332ac4 DA |
683 | update_total_count(kvm, event); |
684 | insert_to_result(&kvm->result, event, | |
685 | kvm->compare, vcpu); | |
bcf6edcd | 686 | } |
355afe81 DA |
687 | } |
688 | } | |
bcf6edcd XG |
689 | } |
690 | ||
691 | /* returns left most element of result, and erase it */ | |
de332ac4 | 692 | static struct kvm_event *pop_from_result(struct rb_root *result) |
bcf6edcd | 693 | { |
de332ac4 | 694 | struct rb_node *node = rb_first(result); |
bcf6edcd XG |
695 | |
696 | if (!node) | |
697 | return NULL; | |
698 | ||
de332ac4 | 699 | rb_erase(node, result); |
bcf6edcd XG |
700 | return container_of(node, struct kvm_event, rb); |
701 | } | |
702 | ||
1afe1d14 | 703 | static void print_vcpu_info(struct perf_kvm_stat *kvm) |
bcf6edcd | 704 | { |
1afe1d14 DA |
705 | int vcpu = kvm->trace_vcpu; |
706 | ||
bcf6edcd XG |
707 | pr_info("Analyze events for "); |
708 | ||
1afe1d14 DA |
709 | if (kvm->live) { |
710 | if (kvm->opts.target.system_wide) | |
711 | pr_info("all VMs, "); | |
712 | else if (kvm->opts.target.pid) | |
713 | pr_info("pid(s) %s, ", kvm->opts.target.pid); | |
714 | else | |
715 | pr_info("dazed and confused on what is monitored, "); | |
716 | } | |
717 | ||
bcf6edcd XG |
718 | if (vcpu == -1) |
719 | pr_info("all VCPUs:\n\n"); | |
720 | else | |
721 | pr_info("VCPU %d:\n\n", vcpu); | |
722 | } | |
723 | ||
1afe1d14 DA |
724 | static void show_timeofday(void) |
725 | { | |
726 | char date[64]; | |
727 | struct timeval tv; | |
728 | struct tm ltime; | |
729 | ||
730 | gettimeofday(&tv, NULL); | |
731 | if (localtime_r(&tv.tv_sec, <ime)) { | |
732 | strftime(date, sizeof(date), "%H:%M:%S", <ime); | |
733 | pr_info("%s.%06ld", date, tv.tv_usec); | |
734 | } else | |
735 | pr_info("00:00:00.000000"); | |
736 | ||
737 | return; | |
738 | } | |
739 | ||
3786063a | 740 | static void print_result(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
741 | { |
742 | char decode[20]; | |
743 | struct kvm_event *event; | |
de332ac4 | 744 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 745 | |
1afe1d14 DA |
746 | if (kvm->live) { |
747 | puts(CONSOLE_CLEAR); | |
748 | show_timeofday(); | |
749 | } | |
750 | ||
bcf6edcd | 751 | pr_info("\n\n"); |
1afe1d14 | 752 | print_vcpu_info(kvm); |
de332ac4 | 753 | pr_info("%20s ", kvm->events_ops->name); |
bcf6edcd XG |
754 | pr_info("%10s ", "Samples"); |
755 | pr_info("%9s ", "Samples%"); | |
756 | ||
757 | pr_info("%9s ", "Time%"); | |
62d04dbf DA |
758 | pr_info("%10s ", "Min Time"); |
759 | pr_info("%10s ", "Max Time"); | |
bcf6edcd XG |
760 | pr_info("%16s ", "Avg time"); |
761 | pr_info("\n\n"); | |
762 | ||
de332ac4 | 763 | while ((event = pop_from_result(&kvm->result))) { |
62d04dbf | 764 | u64 ecount, etime, max, min; |
bcf6edcd XG |
765 | |
766 | ecount = get_event_count(event, vcpu); | |
767 | etime = get_event_time(event, vcpu); | |
62d04dbf DA |
768 | max = get_event_max(event, vcpu); |
769 | min = get_event_min(event, vcpu); | |
bcf6edcd | 770 | |
de332ac4 | 771 | kvm->events_ops->decode_key(kvm, &event->key, decode); |
bcf6edcd XG |
772 | pr_info("%20s ", decode); |
773 | pr_info("%10llu ", (unsigned long long)ecount); | |
de332ac4 DA |
774 | pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100); |
775 | pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100); | |
62d04dbf DA |
776 | pr_info("%8" PRIu64 "us ", min / 1000); |
777 | pr_info("%8" PRIu64 "us ", max / 1000); | |
bcf6edcd XG |
778 | pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3, |
779 | kvm_event_rel_stddev(vcpu, event)); | |
780 | pr_info("\n"); | |
781 | } | |
782 | ||
e4f7637f DA |
783 | pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n", |
784 | kvm->total_count, kvm->total_time / 1e3); | |
1afe1d14 DA |
785 | |
786 | if (kvm->lost_events) | |
787 | pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events); | |
788 | } | |
789 | ||
87419c9a | 790 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
791 | static int process_lost_event(struct perf_tool *tool, |
792 | union perf_event *event __maybe_unused, | |
793 | struct perf_sample *sample __maybe_unused, | |
794 | struct machine *machine __maybe_unused) | |
795 | { | |
796 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool); | |
797 | ||
798 | kvm->lost_events++; | |
799 | return 0; | |
bcf6edcd | 800 | } |
87419c9a | 801 | #endif |
bcf6edcd | 802 | |
2e73f00f DA |
803 | static bool skip_sample(struct perf_kvm_stat *kvm, |
804 | struct perf_sample *sample) | |
805 | { | |
806 | if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL) | |
807 | return true; | |
808 | ||
809 | return false; | |
810 | } | |
811 | ||
de332ac4 | 812 | static int process_sample_event(struct perf_tool *tool, |
bcf6edcd XG |
813 | union perf_event *event, |
814 | struct perf_sample *sample, | |
815 | struct perf_evsel *evsel, | |
816 | struct machine *machine) | |
817 | { | |
2e73f00f | 818 | struct thread *thread; |
3786063a XG |
819 | struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, |
820 | tool); | |
bcf6edcd | 821 | |
2e73f00f DA |
822 | if (skip_sample(kvm, sample)) |
823 | return 0; | |
824 | ||
314add6b | 825 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); |
bcf6edcd XG |
826 | if (thread == NULL) { |
827 | pr_debug("problem processing %d event, skipping it.\n", | |
828 | event->header.type); | |
829 | return -1; | |
830 | } | |
831 | ||
de332ac4 | 832 | if (!handle_kvm_event(kvm, thread, evsel, sample)) |
bcf6edcd XG |
833 | return -1; |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
1afe1d14 | 838 | static int cpu_isa_config(struct perf_kvm_stat *kvm) |
bcf6edcd | 839 | { |
1afe1d14 DA |
840 | char buf[64], *cpuid; |
841 | int err, isa; | |
842 | ||
843 | if (kvm->live) { | |
844 | err = get_cpuid(buf, sizeof(buf)); | |
845 | if (err != 0) { | |
846 | pr_err("Failed to look up CPU type (Intel or AMD)\n"); | |
847 | return err; | |
848 | } | |
849 | cpuid = buf; | |
850 | } else | |
851 | cpuid = kvm->session->header.env.cpuid; | |
bcf6edcd | 852 | |
bcf6edcd XG |
853 | if (strstr(cpuid, "Intel")) |
854 | isa = 1; | |
855 | else if (strstr(cpuid, "AMD")) | |
856 | isa = 0; | |
857 | else { | |
858 | pr_err("CPU %s is not supported.\n", cpuid); | |
1afe1d14 DA |
859 | return -ENOTSUP; |
860 | } | |
861 | ||
862 | if (isa == 1) { | |
863 | kvm->exit_reasons = vmx_exit_reasons; | |
864 | kvm->exit_reasons_size = ARRAY_SIZE(vmx_exit_reasons); | |
865 | kvm->exit_reasons_isa = "VMX"; | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | static bool verify_vcpu(int vcpu) | |
872 | { | |
873 | if (vcpu != -1 && vcpu < 0) { | |
874 | pr_err("Invalid vcpu:%d.\n", vcpu); | |
875 | return false; | |
876 | } | |
877 | ||
878 | return true; | |
879 | } | |
880 | ||
87419c9a | 881 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
882 | /* keeping the max events to a modest level to keep |
883 | * the processing of samples per mmap smooth. | |
884 | */ | |
885 | #define PERF_KVM__MAX_EVENTS_PER_MMAP 25 | |
886 | ||
887 | static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx, | |
888 | u64 *mmap_time) | |
889 | { | |
890 | union perf_event *event; | |
891 | struct perf_sample sample; | |
892 | s64 n = 0; | |
893 | int err; | |
894 | ||
895 | *mmap_time = ULLONG_MAX; | |
896 | while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) { | |
897 | err = perf_evlist__parse_sample(kvm->evlist, event, &sample); | |
898 | if (err) { | |
8e50d384 | 899 | perf_evlist__mmap_consume(kvm->evlist, idx); |
1afe1d14 DA |
900 | pr_err("Failed to parse sample\n"); |
901 | return -1; | |
902 | } | |
903 | ||
904 | err = perf_session_queue_event(kvm->session, event, &sample, 0); | |
8e50d384 ZZ |
905 | /* |
906 | * FIXME: Here we can't consume the event, as perf_session_queue_event will | |
907 | * point to it, and it'll get possibly overwritten by the kernel. | |
908 | */ | |
909 | perf_evlist__mmap_consume(kvm->evlist, idx); | |
910 | ||
1afe1d14 DA |
911 | if (err) { |
912 | pr_err("Failed to enqueue sample: %d\n", err); | |
913 | return -1; | |
914 | } | |
915 | ||
916 | /* save time stamp of our first sample for this mmap */ | |
917 | if (n == 0) | |
918 | *mmap_time = sample.time; | |
919 | ||
920 | /* limit events per mmap handled all at once */ | |
921 | n++; | |
922 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
923 | break; | |
924 | } | |
925 | ||
926 | return n; | |
927 | } | |
928 | ||
929 | static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm) | |
930 | { | |
931 | int i, err, throttled = 0; | |
932 | s64 n, ntotal = 0; | |
933 | u64 flush_time = ULLONG_MAX, mmap_time; | |
934 | ||
935 | for (i = 0; i < kvm->evlist->nr_mmaps; i++) { | |
936 | n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time); | |
937 | if (n < 0) | |
938 | return -1; | |
939 | ||
940 | /* flush time is going to be the minimum of all the individual | |
941 | * mmap times. Essentially, we flush all the samples queued up | |
942 | * from the last pass under our minimal start time -- that leaves | |
943 | * a very small race for samples to come in with a lower timestamp. | |
944 | * The ioctl to return the perf_clock timestamp should close the | |
945 | * race entirely. | |
946 | */ | |
947 | if (mmap_time < flush_time) | |
948 | flush_time = mmap_time; | |
949 | ||
950 | ntotal += n; | |
951 | if (n == PERF_KVM__MAX_EVENTS_PER_MMAP) | |
952 | throttled = 1; | |
953 | } | |
954 | ||
955 | /* flush queue after each round in which we processed events */ | |
956 | if (ntotal) { | |
957 | kvm->session->ordered_samples.next_flush = flush_time; | |
958 | err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session); | |
959 | if (err) { | |
960 | if (kvm->lost_events) | |
961 | pr_info("\nLost events: %" PRIu64 "\n\n", | |
962 | kvm->lost_events); | |
963 | return err; | |
964 | } | |
965 | } | |
966 | ||
967 | return throttled; | |
968 | } | |
969 | ||
970 | static volatile int done; | |
971 | ||
972 | static void sig_handler(int sig __maybe_unused) | |
973 | { | |
974 | done = 1; | |
975 | } | |
976 | ||
977 | static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm) | |
978 | { | |
979 | struct itimerspec new_value; | |
980 | int rc = -1; | |
981 | ||
982 | kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); | |
983 | if (kvm->timerfd < 0) { | |
984 | pr_err("timerfd_create failed\n"); | |
985 | goto out; | |
986 | } | |
987 | ||
988 | new_value.it_value.tv_sec = kvm->display_time; | |
989 | new_value.it_value.tv_nsec = 0; | |
990 | new_value.it_interval.tv_sec = kvm->display_time; | |
991 | new_value.it_interval.tv_nsec = 0; | |
992 | ||
993 | if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) { | |
994 | pr_err("timerfd_settime failed: %d\n", errno); | |
995 | close(kvm->timerfd); | |
996 | goto out; | |
997 | } | |
998 | ||
999 | rc = 0; | |
1000 | out: | |
1001 | return rc; | |
1002 | } | |
1003 | ||
1004 | static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm) | |
1005 | { | |
1006 | uint64_t c; | |
1007 | int rc; | |
1008 | ||
1009 | rc = read(kvm->timerfd, &c, sizeof(uint64_t)); | |
1010 | if (rc < 0) { | |
1011 | if (errno == EAGAIN) | |
1012 | return 0; | |
1013 | ||
1014 | pr_err("Failed to read timer fd: %d\n", errno); | |
1015 | return -1; | |
1016 | } | |
1017 | ||
1018 | if (rc != sizeof(uint64_t)) { | |
1019 | pr_err("Error reading timer fd - invalid size returned\n"); | |
1020 | return -1; | |
1021 | } | |
1022 | ||
1023 | if (c != 1) | |
1024 | pr_debug("Missed timer beats: %" PRIu64 "\n", c-1); | |
1025 | ||
1026 | /* update display */ | |
1027 | sort_result(kvm); | |
1028 | print_result(kvm); | |
1029 | ||
1030 | /* reset counts */ | |
1031 | clear_events_cache_stats(kvm->kvm_events_cache); | |
1032 | kvm->total_count = 0; | |
1033 | kvm->total_time = 0; | |
1034 | kvm->lost_events = 0; | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | static int fd_set_nonblock(int fd) | |
1040 | { | |
1041 | long arg = 0; | |
1042 | ||
1043 | arg = fcntl(fd, F_GETFL); | |
1044 | if (arg < 0) { | |
1045 | pr_err("Failed to get current flags for fd %d\n", fd); | |
1046 | return -1; | |
1047 | } | |
1048 | ||
1049 | if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) { | |
1050 | pr_err("Failed to set non-block option on fd %d\n", fd); | |
1051 | return -1; | |
1052 | } | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | static | |
1058 | int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save) | |
1059 | { | |
1060 | int c; | |
1061 | ||
1062 | tcsetattr(0, TCSANOW, tc_now); | |
1063 | c = getc(stdin); | |
1064 | tcsetattr(0, TCSAFLUSH, tc_save); | |
1065 | ||
1066 | if (c == 'q') | |
1067 | return 1; | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static int kvm_events_live_report(struct perf_kvm_stat *kvm) | |
1073 | { | |
1074 | struct pollfd *pollfds = NULL; | |
1075 | int nr_fds, nr_stdin, ret, err = -EINVAL; | |
1076 | struct termios tc, save; | |
1077 | ||
1078 | /* live flag must be set first */ | |
1079 | kvm->live = true; | |
1080 | ||
1081 | ret = cpu_isa_config(kvm); | |
1082 | if (ret < 0) | |
1083 | return ret; | |
1084 | ||
1085 | if (!verify_vcpu(kvm->trace_vcpu) || | |
1086 | !select_key(kvm) || | |
1087 | !register_kvm_events_ops(kvm)) { | |
1088 | goto out; | |
1089 | } | |
1090 | ||
1091 | init_kvm_event_record(kvm); | |
1092 | ||
1093 | tcgetattr(0, &save); | |
1094 | tc = save; | |
1095 | tc.c_lflag &= ~(ICANON | ECHO); | |
1096 | tc.c_cc[VMIN] = 0; | |
1097 | tc.c_cc[VTIME] = 0; | |
1098 | ||
1099 | signal(SIGINT, sig_handler); | |
1100 | signal(SIGTERM, sig_handler); | |
1101 | ||
1102 | /* copy pollfds -- need to add timerfd and stdin */ | |
1103 | nr_fds = kvm->evlist->nr_fds; | |
1104 | pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2)); | |
1105 | if (!pollfds) { | |
1106 | err = -ENOMEM; | |
1107 | goto out; | |
1108 | } | |
1109 | memcpy(pollfds, kvm->evlist->pollfd, | |
1110 | sizeof(struct pollfd) * kvm->evlist->nr_fds); | |
1111 | ||
1112 | /* add timer fd */ | |
1113 | if (perf_kvm__timerfd_create(kvm) < 0) { | |
1114 | err = -1; | |
1115 | goto out; | |
1116 | } | |
1117 | ||
1118 | pollfds[nr_fds].fd = kvm->timerfd; | |
1119 | pollfds[nr_fds].events = POLLIN; | |
1120 | nr_fds++; | |
1121 | ||
1122 | pollfds[nr_fds].fd = fileno(stdin); | |
1123 | pollfds[nr_fds].events = POLLIN; | |
1124 | nr_stdin = nr_fds; | |
1125 | nr_fds++; | |
1126 | if (fd_set_nonblock(fileno(stdin)) != 0) | |
1127 | goto out; | |
1128 | ||
1129 | /* everything is good - enable the events and process */ | |
1130 | perf_evlist__enable(kvm->evlist); | |
1131 | ||
1132 | while (!done) { | |
1133 | int rc; | |
1134 | ||
1135 | rc = perf_kvm__mmap_read(kvm); | |
1136 | if (rc < 0) | |
1137 | break; | |
1138 | ||
1139 | err = perf_kvm__handle_timerfd(kvm); | |
1140 | if (err) | |
1141 | goto out; | |
1142 | ||
1143 | if (pollfds[nr_stdin].revents & POLLIN) | |
1144 | done = perf_kvm__handle_stdin(&tc, &save); | |
1145 | ||
1146 | if (!rc && !done) | |
1147 | err = poll(pollfds, nr_fds, 100); | |
1148 | } | |
1149 | ||
1150 | perf_evlist__disable(kvm->evlist); | |
1151 | ||
1152 | if (err == 0) { | |
1153 | sort_result(kvm); | |
1154 | print_result(kvm); | |
1155 | } | |
1156 | ||
1157 | out: | |
1158 | if (kvm->timerfd >= 0) | |
1159 | close(kvm->timerfd); | |
1160 | ||
f5385650 | 1161 | free(pollfds); |
1afe1d14 DA |
1162 | return err; |
1163 | } | |
1164 | ||
1165 | static int kvm_live_open_events(struct perf_kvm_stat *kvm) | |
1166 | { | |
1167 | int err, rc = -1; | |
1168 | struct perf_evsel *pos; | |
1169 | struct perf_evlist *evlist = kvm->evlist; | |
1170 | ||
1171 | perf_evlist__config(evlist, &kvm->opts); | |
1172 | ||
1173 | /* | |
1174 | * Note: exclude_{guest,host} do not apply here. | |
1175 | * This command processes KVM tracepoints from host only | |
1176 | */ | |
0050f7aa | 1177 | evlist__for_each(evlist, pos) { |
1afe1d14 DA |
1178 | struct perf_event_attr *attr = &pos->attr; |
1179 | ||
1180 | /* make sure these *are* set */ | |
e71aa283 AH |
1181 | perf_evsel__set_sample_bit(pos, TID); |
1182 | perf_evsel__set_sample_bit(pos, TIME); | |
1183 | perf_evsel__set_sample_bit(pos, CPU); | |
1184 | perf_evsel__set_sample_bit(pos, RAW); | |
1afe1d14 | 1185 | /* make sure these are *not*; want as small a sample as possible */ |
e71aa283 AH |
1186 | perf_evsel__reset_sample_bit(pos, PERIOD); |
1187 | perf_evsel__reset_sample_bit(pos, IP); | |
1188 | perf_evsel__reset_sample_bit(pos, CALLCHAIN); | |
1189 | perf_evsel__reset_sample_bit(pos, ADDR); | |
1190 | perf_evsel__reset_sample_bit(pos, READ); | |
1afe1d14 DA |
1191 | attr->mmap = 0; |
1192 | attr->comm = 0; | |
1193 | attr->task = 0; | |
1194 | ||
1195 | attr->sample_period = 1; | |
1196 | ||
1197 | attr->watermark = 0; | |
1198 | attr->wakeup_events = 1000; | |
1199 | ||
1200 | /* will enable all once we are ready */ | |
1201 | attr->disabled = 1; | |
1202 | } | |
1203 | ||
1204 | err = perf_evlist__open(evlist); | |
1205 | if (err < 0) { | |
1206 | printf("Couldn't create the events: %s\n", strerror(errno)); | |
1207 | goto out; | |
bcf6edcd XG |
1208 | } |
1209 | ||
1afe1d14 DA |
1210 | if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) { |
1211 | ui__error("Failed to mmap the events: %s\n", strerror(errno)); | |
1212 | perf_evlist__close(evlist); | |
1213 | goto out; | |
1214 | } | |
1215 | ||
1216 | rc = 0; | |
1217 | ||
1218 | out: | |
1219 | return rc; | |
bcf6edcd | 1220 | } |
87419c9a | 1221 | #endif |
bcf6edcd | 1222 | |
3786063a | 1223 | static int read_events(struct perf_kvm_stat *kvm) |
bcf6edcd | 1224 | { |
bcf6edcd XG |
1225 | int ret; |
1226 | ||
de332ac4 DA |
1227 | struct perf_tool eops = { |
1228 | .sample = process_sample_event, | |
1229 | .comm = perf_event__process_comm, | |
1230 | .ordered_samples = true, | |
1231 | }; | |
f5fc1412 | 1232 | struct perf_data_file file = { |
476b3a86 | 1233 | .path = kvm->file_name, |
f5fc1412 JO |
1234 | .mode = PERF_DATA_MODE_READ, |
1235 | }; | |
de332ac4 DA |
1236 | |
1237 | kvm->tool = eops; | |
f5fc1412 | 1238 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
de332ac4 | 1239 | if (!kvm->session) { |
bcf6edcd XG |
1240 | pr_err("Initializing perf session failed\n"); |
1241 | return -EINVAL; | |
1242 | } | |
1243 | ||
de332ac4 | 1244 | if (!perf_session__has_traces(kvm->session, "kvm record")) |
bcf6edcd XG |
1245 | return -EINVAL; |
1246 | ||
1247 | /* | |
1248 | * Do not use 'isa' recorded in kvm_exit tracepoint since it is not | |
1249 | * traced in the old kernel. | |
1250 | */ | |
1afe1d14 | 1251 | ret = cpu_isa_config(kvm); |
bcf6edcd XG |
1252 | if (ret < 0) |
1253 | return ret; | |
1254 | ||
de332ac4 | 1255 | return perf_session__process_events(kvm->session, &kvm->tool); |
bcf6edcd XG |
1256 | } |
1257 | ||
2e73f00f DA |
1258 | static int parse_target_str(struct perf_kvm_stat *kvm) |
1259 | { | |
1260 | if (kvm->pid_str) { | |
1261 | kvm->pid_list = intlist__new(kvm->pid_str); | |
1262 | if (kvm->pid_list == NULL) { | |
1263 | pr_err("Error parsing process id string\n"); | |
1264 | return -EINVAL; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | return 0; | |
1269 | } | |
1270 | ||
3786063a | 1271 | static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm) |
bcf6edcd XG |
1272 | { |
1273 | int ret = -EINVAL; | |
de332ac4 | 1274 | int vcpu = kvm->trace_vcpu; |
bcf6edcd | 1275 | |
2e73f00f DA |
1276 | if (parse_target_str(kvm) != 0) |
1277 | goto exit; | |
1278 | ||
bcf6edcd XG |
1279 | if (!verify_vcpu(vcpu)) |
1280 | goto exit; | |
1281 | ||
de332ac4 | 1282 | if (!select_key(kvm)) |
bcf6edcd XG |
1283 | goto exit; |
1284 | ||
de332ac4 | 1285 | if (!register_kvm_events_ops(kvm)) |
bcf6edcd XG |
1286 | goto exit; |
1287 | ||
de332ac4 | 1288 | init_kvm_event_record(kvm); |
bcf6edcd XG |
1289 | setup_pager(); |
1290 | ||
de332ac4 | 1291 | ret = read_events(kvm); |
bcf6edcd XG |
1292 | if (ret) |
1293 | goto exit; | |
1294 | ||
de332ac4 DA |
1295 | sort_result(kvm); |
1296 | print_result(kvm); | |
1297 | ||
bcf6edcd XG |
1298 | exit: |
1299 | return ret; | |
1300 | } | |
1301 | ||
8fdd84c4 DA |
1302 | static const char * const kvm_events_tp[] = { |
1303 | "kvm:kvm_entry", | |
1304 | "kvm:kvm_exit", | |
1305 | "kvm:kvm_mmio", | |
1306 | "kvm:kvm_pio", | |
bcf6edcd XG |
1307 | }; |
1308 | ||
1309 | #define STRDUP_FAIL_EXIT(s) \ | |
1310 | ({ char *_p; \ | |
1311 | _p = strdup(s); \ | |
1312 | if (!_p) \ | |
1313 | return -ENOMEM; \ | |
1314 | _p; \ | |
1315 | }) | |
1316 | ||
3786063a XG |
1317 | static int |
1318 | kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
bcf6edcd XG |
1319 | { |
1320 | unsigned int rec_argc, i, j; | |
1321 | const char **rec_argv; | |
8fdd84c4 DA |
1322 | const char * const record_args[] = { |
1323 | "record", | |
1324 | "-R", | |
8fdd84c4 DA |
1325 | "-m", "1024", |
1326 | "-c", "1", | |
1327 | }; | |
bcf6edcd | 1328 | |
8fdd84c4 DA |
1329 | rec_argc = ARRAY_SIZE(record_args) + argc + 2 + |
1330 | 2 * ARRAY_SIZE(kvm_events_tp); | |
bcf6edcd XG |
1331 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1332 | ||
1333 | if (rec_argv == NULL) | |
1334 | return -ENOMEM; | |
1335 | ||
1336 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1337 | rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]); | |
1338 | ||
8fdd84c4 DA |
1339 | for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { |
1340 | rec_argv[i++] = "-e"; | |
1341 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]); | |
1342 | } | |
1343 | ||
bcf6edcd | 1344 | rec_argv[i++] = STRDUP_FAIL_EXIT("-o"); |
de332ac4 | 1345 | rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name); |
bcf6edcd XG |
1346 | |
1347 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1348 | rec_argv[i] = argv[j]; | |
1349 | ||
1350 | return cmd_record(i, rec_argv, NULL); | |
1351 | } | |
1352 | ||
3786063a XG |
1353 | static int |
1354 | kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv) | |
de332ac4 DA |
1355 | { |
1356 | const struct option kvm_events_report_options[] = { | |
1357 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
1358 | "event for reporting: vmexit, mmio, ioport"), | |
1359 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, | |
1360 | "vcpu id to report"), | |
1361 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1362 | "key for sorting: sample(sort by samples number)" | |
1363 | " time (sort by avg time)"), | |
2e73f00f DA |
1364 | OPT_STRING('p', "pid", &kvm->pid_str, "pid", |
1365 | "analyze events only for given process id(s)"), | |
de332ac4 DA |
1366 | OPT_END() |
1367 | }; | |
bcf6edcd | 1368 | |
de332ac4 DA |
1369 | const char * const kvm_events_report_usage[] = { |
1370 | "perf kvm stat report [<options>]", | |
1371 | NULL | |
1372 | }; | |
bcf6edcd | 1373 | |
bcf6edcd XG |
1374 | symbol__init(); |
1375 | ||
1376 | if (argc) { | |
1377 | argc = parse_options(argc, argv, | |
1378 | kvm_events_report_options, | |
1379 | kvm_events_report_usage, 0); | |
1380 | if (argc) | |
1381 | usage_with_options(kvm_events_report_usage, | |
1382 | kvm_events_report_options); | |
1383 | } | |
1384 | ||
de332ac4 | 1385 | return kvm_events_report_vcpu(kvm); |
bcf6edcd XG |
1386 | } |
1387 | ||
87419c9a | 1388 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1389 | static struct perf_evlist *kvm_live_event_list(void) |
1390 | { | |
1391 | struct perf_evlist *evlist; | |
1392 | char *tp, *name, *sys; | |
1393 | unsigned int j; | |
1394 | int err = -1; | |
1395 | ||
1396 | evlist = perf_evlist__new(); | |
1397 | if (evlist == NULL) | |
1398 | return NULL; | |
1399 | ||
1400 | for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) { | |
1401 | ||
1402 | tp = strdup(kvm_events_tp[j]); | |
1403 | if (tp == NULL) | |
1404 | goto out; | |
1405 | ||
1406 | /* split tracepoint into subsystem and name */ | |
1407 | sys = tp; | |
1408 | name = strchr(tp, ':'); | |
1409 | if (name == NULL) { | |
1410 | pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n", | |
1411 | kvm_events_tp[j]); | |
1412 | free(tp); | |
1413 | goto out; | |
1414 | } | |
1415 | *name = '\0'; | |
1416 | name++; | |
1417 | ||
1418 | if (perf_evlist__add_newtp(evlist, sys, name, NULL)) { | |
1419 | pr_err("Failed to add %s tracepoint to the list\n", kvm_events_tp[j]); | |
1420 | free(tp); | |
1421 | goto out; | |
1422 | } | |
1423 | ||
1424 | free(tp); | |
1425 | } | |
1426 | ||
1427 | err = 0; | |
1428 | ||
1429 | out: | |
1430 | if (err) { | |
1431 | perf_evlist__delete(evlist); | |
1432 | evlist = NULL; | |
1433 | } | |
1434 | ||
1435 | return evlist; | |
1436 | } | |
1437 | ||
1438 | static int kvm_events_live(struct perf_kvm_stat *kvm, | |
1439 | int argc, const char **argv) | |
1440 | { | |
1441 | char errbuf[BUFSIZ]; | |
1442 | int err; | |
1443 | ||
1444 | const struct option live_options[] = { | |
1445 | OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid", | |
1446 | "record events on existing process id"), | |
994a1f78 JO |
1447 | OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages", |
1448 | "number of mmap data pages", | |
1449 | perf_evlist__parse_mmap_pages), | |
1afe1d14 DA |
1450 | OPT_INCR('v', "verbose", &verbose, |
1451 | "be more verbose (show counter open errors, etc)"), | |
1452 | OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide, | |
1453 | "system-wide collection from all CPUs"), | |
1454 | OPT_UINTEGER('d', "display", &kvm->display_time, | |
1455 | "time in seconds between display updates"), | |
1456 | OPT_STRING(0, "event", &kvm->report_event, "report event", | |
1457 | "event for reporting: vmexit, mmio, ioport"), | |
1458 | OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu, | |
1459 | "vcpu id to report"), | |
1460 | OPT_STRING('k', "key", &kvm->sort_key, "sort-key", | |
1461 | "key for sorting: sample(sort by samples number)" | |
1462 | " time (sort by avg time)"), | |
70f7b4a7 DA |
1463 | OPT_U64(0, "duration", &kvm->duration, |
1464 | "show events other than HALT that take longer than duration usecs"), | |
1afe1d14 DA |
1465 | OPT_END() |
1466 | }; | |
1467 | const char * const live_usage[] = { | |
1468 | "perf kvm stat live [<options>]", | |
1469 | NULL | |
1470 | }; | |
f5fc1412 JO |
1471 | struct perf_data_file file = { |
1472 | .mode = PERF_DATA_MODE_WRITE, | |
1473 | }; | |
1afe1d14 DA |
1474 | |
1475 | ||
1476 | /* event handling */ | |
1477 | kvm->tool.sample = process_sample_event; | |
1478 | kvm->tool.comm = perf_event__process_comm; | |
1479 | kvm->tool.exit = perf_event__process_exit; | |
1480 | kvm->tool.fork = perf_event__process_fork; | |
1481 | kvm->tool.lost = process_lost_event; | |
1482 | kvm->tool.ordered_samples = true; | |
1483 | perf_tool__fill_defaults(&kvm->tool); | |
1484 | ||
1485 | /* set defaults */ | |
1486 | kvm->display_time = 1; | |
1487 | kvm->opts.user_interval = 1; | |
1488 | kvm->opts.mmap_pages = 512; | |
1489 | kvm->opts.target.uses_mmap = false; | |
1490 | kvm->opts.target.uid_str = NULL; | |
1491 | kvm->opts.target.uid = UINT_MAX; | |
1492 | ||
1493 | symbol__init(); | |
1494 | disable_buildid_cache(); | |
1495 | ||
1496 | use_browser = 0; | |
1497 | setup_browser(false); | |
1498 | ||
1499 | if (argc) { | |
1500 | argc = parse_options(argc, argv, live_options, | |
1501 | live_usage, 0); | |
1502 | if (argc) | |
1503 | usage_with_options(live_usage, live_options); | |
1504 | } | |
1505 | ||
70f7b4a7 DA |
1506 | kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */ |
1507 | ||
1afe1d14 DA |
1508 | /* |
1509 | * target related setups | |
1510 | */ | |
602ad878 | 1511 | err = target__validate(&kvm->opts.target); |
1afe1d14 | 1512 | if (err) { |
602ad878 | 1513 | target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ); |
1afe1d14 DA |
1514 | ui__warning("%s", errbuf); |
1515 | } | |
1516 | ||
602ad878 | 1517 | if (target__none(&kvm->opts.target)) |
1afe1d14 DA |
1518 | kvm->opts.target.system_wide = true; |
1519 | ||
1520 | ||
1521 | /* | |
1522 | * generate the event list | |
1523 | */ | |
1524 | kvm->evlist = kvm_live_event_list(); | |
1525 | if (kvm->evlist == NULL) { | |
1526 | err = -1; | |
1527 | goto out; | |
1528 | } | |
1529 | ||
1530 | symbol_conf.nr_events = kvm->evlist->nr_entries; | |
1531 | ||
1532 | if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0) | |
1533 | usage_with_options(live_usage, live_options); | |
1534 | ||
1535 | /* | |
1536 | * perf session | |
1537 | */ | |
f5fc1412 | 1538 | kvm->session = perf_session__new(&file, false, &kvm->tool); |
1afe1d14 DA |
1539 | if (kvm->session == NULL) { |
1540 | err = -ENOMEM; | |
1541 | goto out; | |
1542 | } | |
1543 | kvm->session->evlist = kvm->evlist; | |
1544 | perf_session__set_id_hdr_size(kvm->session); | |
a33fbd56 ACM |
1545 | machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target, |
1546 | kvm->evlist->threads, false); | |
1afe1d14 DA |
1547 | err = kvm_live_open_events(kvm); |
1548 | if (err) | |
1549 | goto out; | |
1550 | ||
1551 | err = kvm_events_live_report(kvm); | |
1552 | ||
1553 | out: | |
1554 | exit_browser(0); | |
1555 | ||
1556 | if (kvm->session) | |
1557 | perf_session__delete(kvm->session); | |
1558 | kvm->session = NULL; | |
03ad9747 | 1559 | if (kvm->evlist) |
1afe1d14 | 1560 | perf_evlist__delete(kvm->evlist); |
1afe1d14 DA |
1561 | |
1562 | return err; | |
1563 | } | |
87419c9a | 1564 | #endif |
1afe1d14 | 1565 | |
bcf6edcd XG |
1566 | static void print_kvm_stat_usage(void) |
1567 | { | |
1568 | printf("Usage: perf kvm stat <command>\n\n"); | |
1569 | ||
1570 | printf("# Available commands:\n"); | |
1571 | printf("\trecord: record kvm events\n"); | |
1572 | printf("\treport: report statistical data of kvm events\n"); | |
1afe1d14 | 1573 | printf("\tlive: live reporting of statistical data of kvm events\n"); |
bcf6edcd XG |
1574 | |
1575 | printf("\nOtherwise, it is the alias of 'perf stat':\n"); | |
1576 | } | |
1577 | ||
3786063a | 1578 | static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) |
bcf6edcd | 1579 | { |
3786063a XG |
1580 | struct perf_kvm_stat kvm = { |
1581 | .file_name = file_name, | |
1582 | ||
1583 | .trace_vcpu = -1, | |
1584 | .report_event = "vmexit", | |
1585 | .sort_key = "sample", | |
1586 | ||
1587 | .exit_reasons = svm_exit_reasons, | |
1588 | .exit_reasons_size = ARRAY_SIZE(svm_exit_reasons), | |
1589 | .exit_reasons_isa = "SVM", | |
1590 | }; | |
1591 | ||
bcf6edcd XG |
1592 | if (argc == 1) { |
1593 | print_kvm_stat_usage(); | |
1594 | goto perf_stat; | |
1595 | } | |
1596 | ||
1597 | if (!strncmp(argv[1], "rec", 3)) | |
3786063a | 1598 | return kvm_events_record(&kvm, argc - 1, argv + 1); |
bcf6edcd XG |
1599 | |
1600 | if (!strncmp(argv[1], "rep", 3)) | |
3786063a | 1601 | return kvm_events_report(&kvm, argc - 1 , argv + 1); |
bcf6edcd | 1602 | |
87419c9a | 1603 | #ifdef HAVE_TIMERFD_SUPPORT |
1afe1d14 DA |
1604 | if (!strncmp(argv[1], "live", 4)) |
1605 | return kvm_events_live(&kvm, argc - 1 , argv + 1); | |
87419c9a | 1606 | #endif |
1afe1d14 | 1607 | |
bcf6edcd XG |
1608 | perf_stat: |
1609 | return cmd_stat(argc, argv, NULL); | |
1610 | } | |
7321090f | 1611 | #endif |
bcf6edcd | 1612 | |
3786063a | 1613 | static int __cmd_record(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1614 | { |
1615 | int rec_argc, i = 0, j; | |
1616 | const char **rec_argv; | |
1617 | ||
1618 | rec_argc = argc + 2; | |
1619 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1620 | rec_argv[i++] = strdup("record"); | |
1621 | rec_argv[i++] = strdup("-o"); | |
3786063a | 1622 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1623 | for (j = 1; j < argc; j++, i++) |
1624 | rec_argv[i] = argv[j]; | |
1625 | ||
1626 | BUG_ON(i != rec_argc); | |
1627 | ||
1628 | return cmd_record(i, rec_argv, NULL); | |
1629 | } | |
1630 | ||
3786063a | 1631 | static int __cmd_report(const char *file_name, int argc, const char **argv) |
a1645ce1 ZY |
1632 | { |
1633 | int rec_argc, i = 0, j; | |
1634 | const char **rec_argv; | |
1635 | ||
1636 | rec_argc = argc + 2; | |
1637 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1638 | rec_argv[i++] = strdup("report"); | |
1639 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1640 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1641 | for (j = 1; j < argc; j++, i++) |
1642 | rec_argv[i] = argv[j]; | |
1643 | ||
1644 | BUG_ON(i != rec_argc); | |
1645 | ||
1646 | return cmd_report(i, rec_argv, NULL); | |
1647 | } | |
1648 | ||
3786063a XG |
1649 | static int |
1650 | __cmd_buildid_list(const char *file_name, int argc, const char **argv) | |
a1645ce1 ZY |
1651 | { |
1652 | int rec_argc, i = 0, j; | |
1653 | const char **rec_argv; | |
1654 | ||
1655 | rec_argc = argc + 2; | |
1656 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1657 | rec_argv[i++] = strdup("buildid-list"); | |
1658 | rec_argv[i++] = strdup("-i"); | |
3786063a | 1659 | rec_argv[i++] = strdup(file_name); |
a1645ce1 ZY |
1660 | for (j = 1; j < argc; j++, i++) |
1661 | rec_argv[i] = argv[j]; | |
1662 | ||
1663 | BUG_ON(i != rec_argc); | |
1664 | ||
1665 | return cmd_buildid_list(i, rec_argv, NULL); | |
1666 | } | |
1667 | ||
1d037ca1 | 1668 | int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused) |
a1645ce1 | 1669 | { |
20914ce5 | 1670 | const char *file_name = NULL; |
de332ac4 | 1671 | const struct option kvm_options[] = { |
3786063a | 1672 | OPT_STRING('i', "input", &file_name, "file", |
de332ac4 | 1673 | "Input file name"), |
3786063a | 1674 | OPT_STRING('o', "output", &file_name, "file", |
de332ac4 DA |
1675 | "Output file name"), |
1676 | OPT_BOOLEAN(0, "guest", &perf_guest, | |
1677 | "Collect guest os data"), | |
1678 | OPT_BOOLEAN(0, "host", &perf_host, | |
1679 | "Collect host os data"), | |
1680 | OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory", | |
1681 | "guest mount directory under which every guest os" | |
1682 | " instance has a subdir"), | |
1683 | OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name, | |
1684 | "file", "file saving guest os vmlinux"), | |
1685 | OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms, | |
1686 | "file", "file saving guest os /proc/kallsyms"), | |
1687 | OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules, | |
1688 | "file", "file saving guest os /proc/modules"), | |
100b9073 DY |
1689 | OPT_INCR('v', "verbose", &verbose, |
1690 | "be more verbose (show counter open errors, etc)"), | |
de332ac4 DA |
1691 | OPT_END() |
1692 | }; | |
1693 | ||
09a71b97 RR |
1694 | const char *const kvm_subcommands[] = { "top", "record", "report", "diff", |
1695 | "buildid-list", "stat", NULL }; | |
1696 | const char *kvm_usage[] = { NULL, NULL }; | |
de332ac4 | 1697 | |
1aed2671 JR |
1698 | perf_host = 0; |
1699 | perf_guest = 1; | |
a1645ce1 | 1700 | |
09a71b97 RR |
1701 | argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage, |
1702 | PARSE_OPT_STOP_AT_NON_OPTION); | |
a1645ce1 ZY |
1703 | if (!argc) |
1704 | usage_with_options(kvm_usage, kvm_options); | |
1705 | ||
1706 | if (!perf_host) | |
1707 | perf_guest = 1; | |
1708 | ||
3786063a | 1709 | if (!file_name) { |
e1a2b174 | 1710 | file_name = get_filename_for_perf_kvm(); |
de332ac4 | 1711 | |
3786063a | 1712 | if (!file_name) { |
de332ac4 DA |
1713 | pr_err("Failed to allocate memory for filename\n"); |
1714 | return -ENOMEM; | |
1715 | } | |
a1645ce1 ZY |
1716 | } |
1717 | ||
1718 | if (!strncmp(argv[0], "rec", 3)) | |
3786063a | 1719 | return __cmd_record(file_name, argc, argv); |
a1645ce1 | 1720 | else if (!strncmp(argv[0], "rep", 3)) |
3786063a | 1721 | return __cmd_report(file_name, argc, argv); |
a1645ce1 ZY |
1722 | else if (!strncmp(argv[0], "diff", 4)) |
1723 | return cmd_diff(argc, argv, NULL); | |
1724 | else if (!strncmp(argv[0], "top", 3)) | |
1725 | return cmd_top(argc, argv, NULL); | |
1726 | else if (!strncmp(argv[0], "buildid-list", 12)) | |
3786063a | 1727 | return __cmd_buildid_list(file_name, argc, argv); |
7321090f | 1728 | #if defined(__i386__) || defined(__x86_64__) |
bcf6edcd | 1729 | else if (!strncmp(argv[0], "stat", 4)) |
3786063a | 1730 | return kvm_cmd_stat(file_name, argc, argv); |
7321090f | 1731 | #endif |
a1645ce1 ZY |
1732 | else |
1733 | usage_with_options(kvm_usage, kvm_options); | |
1734 | ||
1735 | return 0; | |
1736 | } |