blob: bff666458b28e24dccac682d0f28b6708a1a7c83 [file] [log] [blame]
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001#include "builtin.h"
2#include "perf.h"
3
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08004#include "util/evsel.h"
David Ahern1afe1d12013-08-05 21:41:34 -04005#include "util/evlist.h"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08006#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"
David Ahern2e73f002013-08-05 21:41:37 -040012#include "util/intlist.h"
Josh Poimboeuf4b6ab942015-12-15 09:39:39 -060013#include <subcmd/parse-options.h>
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080014#include "util/trace-event.h"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080015#include "util/debug.h"
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080016#include "util/tool.h"
17#include "util/stat.h"
David Ahern1afe1d12013-08-05 21:41:34 -040018#include "util/top.h"
Jiri Olsaf5fc1412013-10-15 16:27:32 +020019#include "util/data.h"
Arnaldo Carvalho de Melod704ebd2015-03-03 12:37:54 -030020#include "util/ordered-events.h"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080021
22#include <sys/prctl.h>
David Ahern87419c92013-10-29 10:43:16 -060023#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -040024#include <sys/timerfd.h>
David Ahern87419c92013-10-29 10:43:16 -060025#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080026
David Ahern1afe1d12013-08-05 21:41:34 -040027#include <termios.h>
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080028#include <semaphore.h>
29#include <pthread.h>
30#include <math.h>
31
Alexander Yaryginda50ad62014-07-03 17:59:49 +040032#ifdef HAVE_KVM_STAT_SUPPORT
Alexander Yarygin9daa8122014-07-03 18:29:05 +040033#include "util/kvm-stat.h"
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080034
Alexander Yarygin9daa8122014-07-03 18:29:05 +040035void exit_event_get_key(struct perf_evsel *evsel,
36 struct perf_sample *sample,
37 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080038{
39 key->info = 0;
Hemant Kumar162607e2016-01-28 12:03:04 +053040 key->key = perf_evsel__intval(evsel, sample, kvm_exit_reason);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080041}
42
Alexander Yarygin9daa8122014-07-03 18:29:05 +040043bool kvm_exit_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080044{
Hemant Kumar162607e2016-01-28 12:03:04 +053045 return !strcmp(evsel->name, kvm_exit_trace);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080046}
47
Alexander Yarygin9daa8122014-07-03 18:29:05 +040048bool exit_event_begin(struct perf_evsel *evsel,
49 struct perf_sample *sample, struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080050{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030051 if (kvm_exit_event(evsel)) {
52 exit_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080053 return true;
54 }
55
56 return false;
57}
58
Alexander Yarygin9daa8122014-07-03 18:29:05 +040059bool kvm_entry_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080060{
Hemant Kumar162607e2016-01-28 12:03:04 +053061 return !strcmp(evsel->name, kvm_entry_trace);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080062}
63
Alexander Yarygin9daa8122014-07-03 18:29:05 +040064bool exit_event_end(struct perf_evsel *evsel,
65 struct perf_sample *sample __maybe_unused,
66 struct event_key *key __maybe_unused)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080067{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030068 return kvm_entry_event(evsel);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080069}
70
Alexander Yarygindf74c132014-07-03 17:59:50 +040071static const char *get_exit_reason(struct perf_kvm_stat *kvm,
72 struct exit_reasons_table *tbl,
73 u64 exit_code)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080074{
Alexander Yarygindf74c132014-07-03 17:59:50 +040075 while (tbl->reason != NULL) {
David Ahernde332ac2012-10-02 22:09:53 -060076 if (tbl->exit_code == exit_code)
77 return tbl->reason;
78 tbl++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080079 }
80
81 pr_err("unknown kvm exit code:%lld on %s\n",
David Ahernde332ac2012-10-02 22:09:53 -060082 (unsigned long long)exit_code, kvm->exit_reasons_isa);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080083 return "UNKNOWN";
84}
85
Alexander Yarygin9daa8122014-07-03 18:29:05 +040086void exit_event_decode_key(struct perf_kvm_stat *kvm,
87 struct event_key *key,
88 char *decode)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080089{
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +040090 const char *exit_reason = get_exit_reason(kvm, key->exit_reasons,
Alexander Yarygindf74c132014-07-03 17:59:50 +040091 key->key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080092
Hemant Kumar162607e2016-01-28 12:03:04 +053093 scnprintf(decode, decode_str_len, "%s", exit_reason);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080094}
95
Xiao Guangrong37860632012-11-15 14:17:01 +080096static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080097{
Alexander Yarygin9daa8122014-07-03 18:29:05 +040098 struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080099
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400100 for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) {
101 if (!strcmp(events_ops->name, kvm->report_event)) {
102 kvm->events_ops = events_ops->ops;
103 return true;
104 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800105 }
106
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400107 return false;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800108}
109
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800110struct vcpu_event_record {
111 int vcpu_id;
112 u64 start_time;
113 struct kvm_event *last_event;
114};
115
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800116
Xiao Guangrong37860632012-11-15 14:17:01 +0800117static void init_kvm_event_record(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800118{
David Ahernb880dee2012-10-08 11:17:30 -0600119 unsigned int i;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800120
David Ahernb880dee2012-10-08 11:17:30 -0600121 for (i = 0; i < EVENTS_CACHE_SIZE; i++)
David Ahernde332ac2012-10-02 22:09:53 -0600122 INIT_LIST_HEAD(&kvm->kvm_events_cache[i]);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800123}
124
David Ahern87419c92013-10-29 10:43:16 -0600125#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400126static void clear_events_cache_stats(struct list_head *kvm_events_cache)
127{
128 struct list_head *head;
129 struct kvm_event *event;
130 unsigned int i;
David Ahern62d04db2013-08-05 21:41:35 -0400131 int j;
David Ahern1afe1d12013-08-05 21:41:34 -0400132
133 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
134 head = &kvm_events_cache[i];
135 list_for_each_entry(event, head, hash_entry) {
136 /* reset stats for event */
David Ahern62d04db2013-08-05 21:41:35 -0400137 event->total.time = 0;
138 init_stats(&event->total.stats);
139
140 for (j = 0; j < event->max_vcpu; ++j) {
141 event->vcpu[j].time = 0;
142 init_stats(&event->vcpu[j].stats);
143 }
David Ahern1afe1d12013-08-05 21:41:34 -0400144 }
145 }
146}
David Ahern87419c92013-10-29 10:43:16 -0600147#endif
David Ahern1afe1d12013-08-05 21:41:34 -0400148
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800149static int kvm_events_hash_fn(u64 key)
150{
151 return key & (EVENTS_CACHE_SIZE - 1);
152}
153
154static bool kvm_event_expand(struct kvm_event *event, int vcpu_id)
155{
156 int old_max_vcpu = event->max_vcpu;
David Ahern6ca5f302013-05-25 18:24:46 -0600157 void *prev;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800158
159 if (vcpu_id < event->max_vcpu)
160 return true;
161
162 while (event->max_vcpu <= vcpu_id)
163 event->max_vcpu += DEFAULT_VCPU_NUM;
164
David Ahern6ca5f302013-05-25 18:24:46 -0600165 prev = event->vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800166 event->vcpu = realloc(event->vcpu,
167 event->max_vcpu * sizeof(*event->vcpu));
168 if (!event->vcpu) {
David Ahern6ca5f302013-05-25 18:24:46 -0600169 free(prev);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800170 pr_err("Not enough memory\n");
171 return false;
172 }
173
174 memset(event->vcpu + old_max_vcpu, 0,
175 (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu));
176 return true;
177}
178
179static struct kvm_event *kvm_alloc_init_event(struct event_key *key)
180{
181 struct kvm_event *event;
182
183 event = zalloc(sizeof(*event));
184 if (!event) {
185 pr_err("Not enough memory\n");
186 return NULL;
187 }
188
189 event->key = *key;
Alexander Yaryginacb61fc2014-04-09 16:21:59 +0200190 init_stats(&event->total.stats);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800191 return event;
192}
193
Xiao Guangrong37860632012-11-15 14:17:01 +0800194static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600195 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800196{
197 struct kvm_event *event;
198 struct list_head *head;
199
200 BUG_ON(key->key == INVALID_KEY);
201
David Ahernde332ac2012-10-02 22:09:53 -0600202 head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)];
David Ahern355afe82012-10-08 11:17:32 -0600203 list_for_each_entry(event, head, hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800204 if (event->key.key == key->key && event->key.info == key->info)
205 return event;
David Ahern355afe82012-10-08 11:17:32 -0600206 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800207
208 event = kvm_alloc_init_event(key);
209 if (!event)
210 return NULL;
211
212 list_add(&event->hash_entry, head);
213 return event;
214}
215
Xiao Guangrong37860632012-11-15 14:17:01 +0800216static bool handle_begin_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600217 struct vcpu_event_record *vcpu_record,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800218 struct event_key *key, u64 timestamp)
219{
220 struct kvm_event *event = NULL;
221
222 if (key->key != INVALID_KEY)
David Ahernde332ac2012-10-02 22:09:53 -0600223 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800224
225 vcpu_record->last_event = event;
226 vcpu_record->start_time = timestamp;
227 return true;
228}
229
230static void
231kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff)
232{
233 kvm_stats->time += time_diff;
234 update_stats(&kvm_stats->stats, time_diff);
235}
236
237static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event)
238{
239 struct kvm_event_stats *kvm_stats = &event->total;
240
241 if (vcpu_id != -1)
242 kvm_stats = &event->vcpu[vcpu_id];
243
244 return rel_stddev_stats(stddev_stats(&kvm_stats->stats),
245 avg_stats(&kvm_stats->stats));
246}
247
248static bool update_kvm_event(struct kvm_event *event, int vcpu_id,
249 u64 time_diff)
250{
David Ahern2aa8eab2012-10-08 11:17:35 -0600251 if (vcpu_id == -1) {
252 kvm_update_event_stats(&event->total, time_diff);
253 return true;
254 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800255
256 if (!kvm_event_expand(event, vcpu_id))
257 return false;
258
259 kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff);
260 return true;
261}
262
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400263static bool is_child_event(struct perf_kvm_stat *kvm,
264 struct perf_evsel *evsel,
265 struct perf_sample *sample,
266 struct event_key *key)
267{
268 struct child_event_ops *child_ops;
269
270 child_ops = kvm->events_ops->child_ops;
271
272 if (!child_ops)
273 return false;
274
275 for (; child_ops->name; child_ops++) {
276 if (!strcmp(evsel->name, child_ops->name)) {
277 child_ops->get_key(evsel, sample, key);
278 return true;
279 }
280 }
281
282 return false;
283}
284
285static bool handle_child_event(struct perf_kvm_stat *kvm,
286 struct vcpu_event_record *vcpu_record,
287 struct event_key *key,
288 struct perf_sample *sample __maybe_unused)
289{
290 struct kvm_event *event = NULL;
291
292 if (key->key != INVALID_KEY)
293 event = find_create_kvm_event(kvm, key);
294
295 vcpu_record->last_event = event;
296
297 return true;
298}
299
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400300static bool skip_event(const char *event)
301{
302 const char * const *skip_events;
303
304 for (skip_events = kvm_skip_events; *skip_events; skip_events++)
305 if (!strcmp(event, *skip_events))
306 return true;
307
308 return false;
309}
310
Xiao Guangrong37860632012-11-15 14:17:01 +0800311static bool handle_end_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600312 struct vcpu_event_record *vcpu_record,
313 struct event_key *key,
David Ahern70f7b4a2013-08-07 21:56:38 -0400314 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800315{
316 struct kvm_event *event;
317 u64 time_begin, time_diff;
David Ahern2aa8eab2012-10-08 11:17:35 -0600318 int vcpu;
319
320 if (kvm->trace_vcpu == -1)
321 vcpu = -1;
322 else
323 vcpu = vcpu_record->vcpu_id;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800324
325 event = vcpu_record->last_event;
326 time_begin = vcpu_record->start_time;
327
328 /* The begin event is not caught. */
329 if (!time_begin)
330 return true;
331
332 /*
333 * In some case, the 'begin event' only records the start timestamp,
334 * the actual event is recognized in the 'end event' (e.g. mmio-event).
335 */
336
337 /* Both begin and end events did not get the key. */
338 if (!event && key->key == INVALID_KEY)
339 return true;
340
341 if (!event)
David Ahernde332ac2012-10-02 22:09:53 -0600342 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800343
344 if (!event)
345 return false;
346
347 vcpu_record->last_event = NULL;
348 vcpu_record->start_time = 0;
349
David Ahern1afe1d12013-08-05 21:41:34 -0400350 /* seems to happen once in a while during live mode */
David Ahern70f7b4a2013-08-07 21:56:38 -0400351 if (sample->time < time_begin) {
David Ahern1afe1d12013-08-05 21:41:34 -0400352 pr_debug("End time before begin time; skipping event.\n");
353 return true;
354 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800355
David Ahern70f7b4a2013-08-07 21:56:38 -0400356 time_diff = sample->time - time_begin;
357
358 if (kvm->duration && time_diff > kvm->duration) {
Hemant Kumar162607e2016-01-28 12:03:04 +0530359 char decode[decode_str_len];
David Ahern70f7b4a2013-08-07 21:56:38 -0400360
361 kvm->events_ops->decode_key(kvm, &event->key, decode);
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400362 if (!skip_event(decode)) {
David Ahern70f7b4a2013-08-07 21:56:38 -0400363 pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n",
364 sample->time, sample->pid, vcpu_record->vcpu_id,
365 decode, time_diff/1000);
366 }
367 }
368
David Ahern2aa8eab2012-10-08 11:17:35 -0600369 return update_kvm_event(event, vcpu, time_diff);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800370}
371
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300372static
373struct vcpu_event_record *per_vcpu_record(struct thread *thread,
374 struct perf_evsel *evsel,
375 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800376{
377 /* Only kvm_entry records vcpu id. */
Namhyung Kim69e865c2014-10-06 09:46:02 +0900378 if (!thread__priv(thread) && kvm_entry_event(evsel)) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800379 struct vcpu_event_record *vcpu_record;
380
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300381 vcpu_record = zalloc(sizeof(*vcpu_record));
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800382 if (!vcpu_record) {
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300383 pr_err("%s: Not enough memory\n", __func__);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800384 return NULL;
385 }
386
Hemant Kumar162607e2016-01-28 12:03:04 +0530387 vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample,
388 vcpu_id_str);
Namhyung Kim69e865c2014-10-06 09:46:02 +0900389 thread__set_priv(thread, vcpu_record);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800390 }
391
Namhyung Kim69e865c2014-10-06 09:46:02 +0900392 return thread__priv(thread);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800393}
394
Xiao Guangrong37860632012-11-15 14:17:01 +0800395static bool handle_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600396 struct thread *thread,
397 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300398 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800399{
400 struct vcpu_event_record *vcpu_record;
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400401 struct event_key key = { .key = INVALID_KEY,
402 .exit_reasons = kvm->exit_reasons };
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800403
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300404 vcpu_record = per_vcpu_record(thread, evsel, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800405 if (!vcpu_record)
406 return true;
407
David Ahern2aa8eab2012-10-08 11:17:35 -0600408 /* only process events for vcpus user cares about */
409 if ((kvm->trace_vcpu != -1) &&
410 (kvm->trace_vcpu != vcpu_record->vcpu_id))
411 return true;
412
David Ahernde332ac2012-10-02 22:09:53 -0600413 if (kvm->events_ops->is_begin_event(evsel, sample, &key))
414 return handle_begin_event(kvm, vcpu_record, &key, sample->time);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800415
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400416 if (is_child_event(kvm, evsel, sample, &key))
417 return handle_child_event(kvm, vcpu_record, &key, sample);
418
David Ahernde332ac2012-10-02 22:09:53 -0600419 if (kvm->events_ops->is_end_event(evsel, sample, &key))
David Ahern70f7b4a2013-08-07 21:56:38 -0400420 return handle_end_event(kvm, vcpu_record, &key, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800421
422 return true;
423}
424
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800425#define GET_EVENT_KEY(func, field) \
426static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \
427{ \
428 if (vcpu == -1) \
429 return event->total.field; \
430 \
431 if (vcpu >= event->max_vcpu) \
432 return 0; \
433 \
434 return event->vcpu[vcpu].field; \
435}
436
437#define COMPARE_EVENT_KEY(func, field) \
438GET_EVENT_KEY(func, field) \
439static int compare_kvm_event_ ## func(struct kvm_event *one, \
440 struct kvm_event *two, int vcpu)\
441{ \
442 return get_event_ ##func(one, vcpu) > \
443 get_event_ ##func(two, vcpu); \
444}
445
446GET_EVENT_KEY(time, time);
447COMPARE_EVENT_KEY(count, stats.n);
448COMPARE_EVENT_KEY(mean, stats.mean);
David Ahern62d04db2013-08-05 21:41:35 -0400449GET_EVENT_KEY(max, stats.max);
450GET_EVENT_KEY(min, stats.min);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800451
452#define DEF_SORT_NAME_KEY(name, compare_key) \
453 { #name, compare_kvm_event_ ## compare_key }
454
455static struct kvm_event_key keys[] = {
456 DEF_SORT_NAME_KEY(sample, count),
457 DEF_SORT_NAME_KEY(time, mean),
458 { NULL, NULL }
459};
460
Xiao Guangrong37860632012-11-15 14:17:01 +0800461static bool select_key(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800462{
463 int i;
464
465 for (i = 0; keys[i].name; i++) {
David Ahernde332ac2012-10-02 22:09:53 -0600466 if (!strcmp(keys[i].name, kvm->sort_key)) {
467 kvm->compare = keys[i].key;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800468 return true;
469 }
470 }
471
David Ahernde332ac2012-10-02 22:09:53 -0600472 pr_err("Unknown compare key:%s\n", kvm->sort_key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800473 return false;
474}
475
David Ahernde332ac2012-10-02 22:09:53 -0600476static void insert_to_result(struct rb_root *result, struct kvm_event *event,
477 key_cmp_fun bigger, int vcpu)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800478{
David Ahernde332ac2012-10-02 22:09:53 -0600479 struct rb_node **rb = &result->rb_node;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800480 struct rb_node *parent = NULL;
481 struct kvm_event *p;
482
483 while (*rb) {
484 p = container_of(*rb, struct kvm_event, rb);
485 parent = *rb;
486
487 if (bigger(event, p, vcpu))
488 rb = &(*rb)->rb_left;
489 else
490 rb = &(*rb)->rb_right;
491 }
492
493 rb_link_node(&event->rb, parent, rb);
David Ahernde332ac2012-10-02 22:09:53 -0600494 rb_insert_color(&event->rb, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800495}
496
Xiao Guangrong37860632012-11-15 14:17:01 +0800497static void
498update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800499{
David Ahernde332ac2012-10-02 22:09:53 -0600500 int vcpu = kvm->trace_vcpu;
501
502 kvm->total_count += get_event_count(event, vcpu);
503 kvm->total_time += get_event_time(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800504}
505
506static bool event_is_valid(struct kvm_event *event, int vcpu)
507{
508 return !!get_event_count(event, vcpu);
509}
510
Xiao Guangrong37860632012-11-15 14:17:01 +0800511static void sort_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800512{
513 unsigned int i;
David Ahernde332ac2012-10-02 22:09:53 -0600514 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800515 struct kvm_event *event;
516
David Ahern355afe82012-10-08 11:17:32 -0600517 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
518 list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800519 if (event_is_valid(event, vcpu)) {
David Ahernde332ac2012-10-02 22:09:53 -0600520 update_total_count(kvm, event);
521 insert_to_result(&kvm->result, event,
522 kvm->compare, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800523 }
David Ahern355afe82012-10-08 11:17:32 -0600524 }
525 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800526}
527
528/* returns left most element of result, and erase it */
David Ahernde332ac2012-10-02 22:09:53 -0600529static struct kvm_event *pop_from_result(struct rb_root *result)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800530{
David Ahernde332ac2012-10-02 22:09:53 -0600531 struct rb_node *node = rb_first(result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800532
533 if (!node)
534 return NULL;
535
David Ahernde332ac2012-10-02 22:09:53 -0600536 rb_erase(node, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800537 return container_of(node, struct kvm_event, rb);
538}
539
David Ahern1afe1d12013-08-05 21:41:34 -0400540static void print_vcpu_info(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800541{
David Ahern1afe1d12013-08-05 21:41:34 -0400542 int vcpu = kvm->trace_vcpu;
543
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800544 pr_info("Analyze events for ");
545
Alexander Yarygin1f3e5b52014-09-01 17:44:55 +0400546 if (kvm->opts.target.system_wide)
547 pr_info("all VMs, ");
548 else if (kvm->opts.target.pid)
549 pr_info("pid(s) %s, ", kvm->opts.target.pid);
550 else
551 pr_info("dazed and confused on what is monitored, ");
David Ahern1afe1d12013-08-05 21:41:34 -0400552
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800553 if (vcpu == -1)
554 pr_info("all VCPUs:\n\n");
555 else
556 pr_info("VCPU %d:\n\n", vcpu);
557}
558
David Ahern1afe1d12013-08-05 21:41:34 -0400559static void show_timeofday(void)
560{
561 char date[64];
562 struct timeval tv;
563 struct tm ltime;
564
565 gettimeofday(&tv, NULL);
566 if (localtime_r(&tv.tv_sec, &ltime)) {
567 strftime(date, sizeof(date), "%H:%M:%S", &ltime);
568 pr_info("%s.%06ld", date, tv.tv_usec);
569 } else
570 pr_info("00:00:00.000000");
571
572 return;
573}
574
Xiao Guangrong37860632012-11-15 14:17:01 +0800575static void print_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800576{
Hemant Kumar162607e2016-01-28 12:03:04 +0530577 char decode[decode_str_len];
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800578 struct kvm_event *event;
David Ahernde332ac2012-10-02 22:09:53 -0600579 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800580
David Ahern1afe1d12013-08-05 21:41:34 -0400581 if (kvm->live) {
582 puts(CONSOLE_CLEAR);
583 show_timeofday();
584 }
585
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800586 pr_info("\n\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400587 print_vcpu_info(kvm);
Hemant Kumar162607e2016-01-28 12:03:04 +0530588 pr_info("%*s ", decode_str_len, kvm->events_ops->name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800589 pr_info("%10s ", "Samples");
590 pr_info("%9s ", "Samples%");
591
592 pr_info("%9s ", "Time%");
Christian Borntraegerb048a242014-07-31 13:13:51 +0200593 pr_info("%11s ", "Min Time");
594 pr_info("%11s ", "Max Time");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800595 pr_info("%16s ", "Avg time");
596 pr_info("\n\n");
597
David Ahernde332ac2012-10-02 22:09:53 -0600598 while ((event = pop_from_result(&kvm->result))) {
David Ahern62d04db2013-08-05 21:41:35 -0400599 u64 ecount, etime, max, min;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800600
601 ecount = get_event_count(event, vcpu);
602 etime = get_event_time(event, vcpu);
David Ahern62d04db2013-08-05 21:41:35 -0400603 max = get_event_max(event, vcpu);
604 min = get_event_min(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800605
David Ahernde332ac2012-10-02 22:09:53 -0600606 kvm->events_ops->decode_key(kvm, &event->key, decode);
Hemant Kumar162607e2016-01-28 12:03:04 +0530607 pr_info("%*s ", decode_str_len, decode);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800608 pr_info("%10llu ", (unsigned long long)ecount);
David Ahernde332ac2012-10-02 22:09:53 -0600609 pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100);
610 pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100);
Christian Borntraegerb048a242014-07-31 13:13:51 +0200611 pr_info("%9.2fus ", (double)min / 1e3);
612 pr_info("%9.2fus ", (double)max / 1e3);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800613 pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,
614 kvm_event_rel_stddev(vcpu, event));
615 pr_info("\n");
616 }
617
David Aherne4f76372012-10-08 11:17:34 -0600618 pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n",
619 kvm->total_count, kvm->total_time / 1e3);
David Ahern1afe1d12013-08-05 21:41:34 -0400620
621 if (kvm->lost_events)
622 pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
623}
624
David Ahern87419c92013-10-29 10:43:16 -0600625#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400626static int process_lost_event(struct perf_tool *tool,
627 union perf_event *event __maybe_unused,
628 struct perf_sample *sample __maybe_unused,
629 struct machine *machine __maybe_unused)
630{
631 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool);
632
633 kvm->lost_events++;
634 return 0;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800635}
David Ahern87419c92013-10-29 10:43:16 -0600636#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800637
David Ahern2e73f002013-08-05 21:41:37 -0400638static bool skip_sample(struct perf_kvm_stat *kvm,
639 struct perf_sample *sample)
640{
641 if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL)
642 return true;
643
644 return false;
645}
646
David Ahernde332ac2012-10-02 22:09:53 -0600647static int process_sample_event(struct perf_tool *tool,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800648 union perf_event *event,
649 struct perf_sample *sample,
650 struct perf_evsel *evsel,
651 struct machine *machine)
652{
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300653 int err = 0;
David Ahern2e73f002013-08-05 21:41:37 -0400654 struct thread *thread;
Xiao Guangrong37860632012-11-15 14:17:01 +0800655 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat,
656 tool);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800657
David Ahern2e73f002013-08-05 21:41:37 -0400658 if (skip_sample(kvm, sample))
659 return 0;
660
Adrian Hunter314add62013-08-27 11:23:03 +0300661 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800662 if (thread == NULL) {
663 pr_debug("problem processing %d event, skipping it.\n",
664 event->header.type);
665 return -1;
666 }
667
David Ahernde332ac2012-10-02 22:09:53 -0600668 if (!handle_kvm_event(kvm, thread, evsel, sample))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300669 err = -1;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800670
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300671 thread__put(thread);
672 return err;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800673}
674
David Ahern1afe1d12013-08-05 21:41:34 -0400675static int cpu_isa_config(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800676{
David Ahern1afe1d12013-08-05 21:41:34 -0400677 char buf[64], *cpuid;
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400678 int err;
David Ahern1afe1d12013-08-05 21:41:34 -0400679
680 if (kvm->live) {
681 err = get_cpuid(buf, sizeof(buf));
682 if (err != 0) {
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400683 pr_err("Failed to look up CPU type\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400684 return err;
685 }
686 cpuid = buf;
687 } else
688 cpuid = kvm->session->header.env.cpuid;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800689
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400690 if (!cpuid) {
691 pr_err("Failed to look up CPU type\n");
692 return -EINVAL;
693 }
694
695 err = cpu_isa_init(kvm, cpuid);
696 if (err == -ENOTSUP)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800697 pr_err("CPU %s is not supported.\n", cpuid);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800698
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400699 return err;
David Ahern1afe1d12013-08-05 21:41:34 -0400700}
701
702static bool verify_vcpu(int vcpu)
703{
704 if (vcpu != -1 && vcpu < 0) {
705 pr_err("Invalid vcpu:%d.\n", vcpu);
706 return false;
707 }
708
709 return true;
710}
711
David Ahern87419c92013-10-29 10:43:16 -0600712#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400713/* keeping the max events to a modest level to keep
714 * the processing of samples per mmap smooth.
715 */
716#define PERF_KVM__MAX_EVENTS_PER_MMAP 25
717
718static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
719 u64 *mmap_time)
720{
721 union perf_event *event;
722 struct perf_sample sample;
723 s64 n = 0;
724 int err;
725
726 *mmap_time = ULLONG_MAX;
727 while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) {
728 err = perf_evlist__parse_sample(kvm->evlist, event, &sample);
729 if (err) {
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800730 perf_evlist__mmap_consume(kvm->evlist, idx);
David Ahern1afe1d12013-08-05 21:41:34 -0400731 pr_err("Failed to parse sample\n");
732 return -1;
733 }
734
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -0300735 err = perf_session__queue_event(kvm->session, event, &sample, 0);
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800736 /*
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -0300737 * FIXME: Here we can't consume the event, as perf_session__queue_event will
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800738 * point to it, and it'll get possibly overwritten by the kernel.
739 */
740 perf_evlist__mmap_consume(kvm->evlist, idx);
741
David Ahern1afe1d12013-08-05 21:41:34 -0400742 if (err) {
743 pr_err("Failed to enqueue sample: %d\n", err);
744 return -1;
745 }
746
747 /* save time stamp of our first sample for this mmap */
748 if (n == 0)
749 *mmap_time = sample.time;
750
751 /* limit events per mmap handled all at once */
752 n++;
753 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
754 break;
755 }
756
757 return n;
758}
759
760static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm)
761{
762 int i, err, throttled = 0;
763 s64 n, ntotal = 0;
764 u64 flush_time = ULLONG_MAX, mmap_time;
765
766 for (i = 0; i < kvm->evlist->nr_mmaps; i++) {
767 n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time);
768 if (n < 0)
769 return -1;
770
771 /* flush time is going to be the minimum of all the individual
772 * mmap times. Essentially, we flush all the samples queued up
773 * from the last pass under our minimal start time -- that leaves
774 * a very small race for samples to come in with a lower timestamp.
775 * The ioctl to return the perf_clock timestamp should close the
776 * race entirely.
777 */
778 if (mmap_time < flush_time)
779 flush_time = mmap_time;
780
781 ntotal += n;
782 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
783 throttled = 1;
784 }
785
786 /* flush queue after each round in which we processed events */
787 if (ntotal) {
Arnaldo Carvalho de Melod704ebd2015-03-03 12:37:54 -0300788 struct ordered_events *oe = &kvm->session->ordered_events;
789
790 oe->next_flush = flush_time;
791 err = ordered_events__flush(oe, OE_FLUSH__ROUND);
David Ahern1afe1d12013-08-05 21:41:34 -0400792 if (err) {
793 if (kvm->lost_events)
794 pr_info("\nLost events: %" PRIu64 "\n\n",
795 kvm->lost_events);
796 return err;
797 }
798 }
799
800 return throttled;
801}
802
803static volatile int done;
804
805static void sig_handler(int sig __maybe_unused)
806{
807 done = 1;
808}
809
810static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm)
811{
812 struct itimerspec new_value;
813 int rc = -1;
814
815 kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
816 if (kvm->timerfd < 0) {
817 pr_err("timerfd_create failed\n");
818 goto out;
819 }
820
821 new_value.it_value.tv_sec = kvm->display_time;
822 new_value.it_value.tv_nsec = 0;
823 new_value.it_interval.tv_sec = kvm->display_time;
824 new_value.it_interval.tv_nsec = 0;
825
826 if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) {
827 pr_err("timerfd_settime failed: %d\n", errno);
828 close(kvm->timerfd);
829 goto out;
830 }
831
832 rc = 0;
833out:
834 return rc;
835}
836
837static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm)
838{
839 uint64_t c;
840 int rc;
841
842 rc = read(kvm->timerfd, &c, sizeof(uint64_t));
843 if (rc < 0) {
844 if (errno == EAGAIN)
845 return 0;
846
847 pr_err("Failed to read timer fd: %d\n", errno);
848 return -1;
849 }
850
851 if (rc != sizeof(uint64_t)) {
852 pr_err("Error reading timer fd - invalid size returned\n");
853 return -1;
854 }
855
856 if (c != 1)
857 pr_debug("Missed timer beats: %" PRIu64 "\n", c-1);
858
859 /* update display */
860 sort_result(kvm);
861 print_result(kvm);
862
863 /* reset counts */
864 clear_events_cache_stats(kvm->kvm_events_cache);
865 kvm->total_count = 0;
866 kvm->total_time = 0;
867 kvm->lost_events = 0;
868
869 return 0;
870}
871
872static int fd_set_nonblock(int fd)
873{
874 long arg = 0;
875
876 arg = fcntl(fd, F_GETFL);
877 if (arg < 0) {
878 pr_err("Failed to get current flags for fd %d\n", fd);
879 return -1;
880 }
881
882 if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) {
883 pr_err("Failed to set non-block option on fd %d\n", fd);
884 return -1;
885 }
886
887 return 0;
888}
889
Jiri Olsad5b41302014-08-11 10:50:09 +0200890static int perf_kvm__handle_stdin(void)
David Ahern1afe1d12013-08-05 21:41:34 -0400891{
892 int c;
893
David Ahern1afe1d12013-08-05 21:41:34 -0400894 c = getc(stdin);
David Ahern1afe1d12013-08-05 21:41:34 -0400895 if (c == 'q')
896 return 1;
897
898 return 0;
899}
900
901static int kvm_events_live_report(struct perf_kvm_stat *kvm)
902{
Jiri Olsa1ca72262014-10-01 18:00:29 +0200903 int nr_stdin, ret, err = -EINVAL;
Jiri Olsad5b41302014-08-11 10:50:09 +0200904 struct termios save;
David Ahern1afe1d12013-08-05 21:41:34 -0400905
906 /* live flag must be set first */
907 kvm->live = true;
908
909 ret = cpu_isa_config(kvm);
910 if (ret < 0)
911 return ret;
912
913 if (!verify_vcpu(kvm->trace_vcpu) ||
914 !select_key(kvm) ||
915 !register_kvm_events_ops(kvm)) {
916 goto out;
917 }
918
Jiri Olsad5b41302014-08-11 10:50:09 +0200919 set_term_quiet_input(&save);
David Ahern1afe1d12013-08-05 21:41:34 -0400920 init_kvm_event_record(kvm);
921
David Ahern1afe1d12013-08-05 21:41:34 -0400922 signal(SIGINT, sig_handler);
923 signal(SIGTERM, sig_handler);
924
David Ahern1afe1d12013-08-05 21:41:34 -0400925 /* add timer fd */
926 if (perf_kvm__timerfd_create(kvm) < 0) {
927 err = -1;
928 goto out;
929 }
930
Jiri Olsafe636ad2014-10-01 18:00:27 +0200931 if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0)
Arnaldo Carvalho de Melo0a04c9e2014-08-18 17:12:30 -0300932 goto out;
933
Jiri Olsa0cae0132014-10-01 18:00:28 +0200934 nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin));
935 if (nr_stdin < 0)
Arnaldo Carvalho de Melo0a04c9e2014-08-18 17:12:30 -0300936 goto out;
937
David Ahern1afe1d12013-08-05 21:41:34 -0400938 if (fd_set_nonblock(fileno(stdin)) != 0)
939 goto out;
940
941 /* everything is good - enable the events and process */
942 perf_evlist__enable(kvm->evlist);
943
944 while (!done) {
Jiri Olsa1ca72262014-10-01 18:00:29 +0200945 struct fdarray *fda = &kvm->evlist->pollfd;
David Ahern1afe1d12013-08-05 21:41:34 -0400946 int rc;
947
948 rc = perf_kvm__mmap_read(kvm);
949 if (rc < 0)
950 break;
951
952 err = perf_kvm__handle_timerfd(kvm);
953 if (err)
954 goto out;
955
Jiri Olsa1ca72262014-10-01 18:00:29 +0200956 if (fda->entries[nr_stdin].revents & POLLIN)
Jiri Olsad5b41302014-08-11 10:50:09 +0200957 done = perf_kvm__handle_stdin();
David Ahern1afe1d12013-08-05 21:41:34 -0400958
959 if (!rc && !done)
Jiri Olsa1ca72262014-10-01 18:00:29 +0200960 err = fdarray__poll(fda, 100);
David Ahern1afe1d12013-08-05 21:41:34 -0400961 }
962
963 perf_evlist__disable(kvm->evlist);
964
965 if (err == 0) {
966 sort_result(kvm);
967 print_result(kvm);
968 }
969
970out:
971 if (kvm->timerfd >= 0)
972 close(kvm->timerfd);
973
Jiri Olsad5b41302014-08-11 10:50:09 +0200974 tcsetattr(0, TCSAFLUSH, &save);
David Ahern1afe1d12013-08-05 21:41:34 -0400975 return err;
976}
977
978static int kvm_live_open_events(struct perf_kvm_stat *kvm)
979{
980 int err, rc = -1;
981 struct perf_evsel *pos;
982 struct perf_evlist *evlist = kvm->evlist;
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +0000983 char sbuf[STRERR_BUFSIZE];
David Ahern1afe1d12013-08-05 21:41:34 -0400984
985 perf_evlist__config(evlist, &kvm->opts);
986
987 /*
988 * Note: exclude_{guest,host} do not apply here.
989 * This command processes KVM tracepoints from host only
990 */
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300991 evlist__for_each(evlist, pos) {
David Ahern1afe1d12013-08-05 21:41:34 -0400992 struct perf_event_attr *attr = &pos->attr;
993
994 /* make sure these *are* set */
Adrian Huntere71aa282013-09-06 22:40:12 +0300995 perf_evsel__set_sample_bit(pos, TID);
996 perf_evsel__set_sample_bit(pos, TIME);
997 perf_evsel__set_sample_bit(pos, CPU);
998 perf_evsel__set_sample_bit(pos, RAW);
David Ahern1afe1d12013-08-05 21:41:34 -0400999 /* make sure these are *not*; want as small a sample as possible */
Adrian Huntere71aa282013-09-06 22:40:12 +03001000 perf_evsel__reset_sample_bit(pos, PERIOD);
1001 perf_evsel__reset_sample_bit(pos, IP);
1002 perf_evsel__reset_sample_bit(pos, CALLCHAIN);
1003 perf_evsel__reset_sample_bit(pos, ADDR);
1004 perf_evsel__reset_sample_bit(pos, READ);
David Ahern1afe1d12013-08-05 21:41:34 -04001005 attr->mmap = 0;
1006 attr->comm = 0;
1007 attr->task = 0;
1008
1009 attr->sample_period = 1;
1010
1011 attr->watermark = 0;
1012 attr->wakeup_events = 1000;
1013
1014 /* will enable all once we are ready */
1015 attr->disabled = 1;
1016 }
1017
1018 err = perf_evlist__open(evlist);
1019 if (err < 0) {
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +00001020 printf("Couldn't create the events: %s\n",
1021 strerror_r(errno, sbuf, sizeof(sbuf)));
David Ahern1afe1d12013-08-05 21:41:34 -04001022 goto out;
1023 }
1024
1025 if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) {
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +00001026 ui__error("Failed to mmap the events: %s\n",
1027 strerror_r(errno, sbuf, sizeof(sbuf)));
David Ahern1afe1d12013-08-05 21:41:34 -04001028 perf_evlist__close(evlist);
1029 goto out;
1030 }
1031
1032 rc = 0;
1033
1034out:
1035 return rc;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001036}
David Ahern87419c92013-10-29 10:43:16 -06001037#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001038
Xiao Guangrong37860632012-11-15 14:17:01 +08001039static int read_events(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001040{
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001041 int ret;
1042
David Ahernde332ac2012-10-02 22:09:53 -06001043 struct perf_tool eops = {
1044 .sample = process_sample_event,
1045 .comm = perf_event__process_comm,
Jiri Olsa0a8cb852014-07-06 14:18:21 +02001046 .ordered_events = true,
David Ahernde332ac2012-10-02 22:09:53 -06001047 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001048 struct perf_data_file file = {
Dongsheng Yang476b3a82013-12-09 18:47:03 -05001049 .path = kvm->file_name,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001050 .mode = PERF_DATA_MODE_READ,
Yunlong Song8cc5ec1f2015-04-02 21:47:13 +08001051 .force = kvm->force,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001052 };
David Ahernde332ac2012-10-02 22:09:53 -06001053
1054 kvm->tool = eops;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001055 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahernde332ac2012-10-02 22:09:53 -06001056 if (!kvm->session) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001057 pr_err("Initializing perf session failed\n");
Taeung Song52e028342014-09-24 10:33:37 +09001058 return -1;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001059 }
1060
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001061 symbol__init(&kvm->session->header.env);
Namhyung Kim14d37f32014-08-12 15:40:39 +09001062
Taeung Song41b98362015-07-01 00:18:44 +09001063 if (!perf_session__has_traces(kvm->session, "kvm record")) {
1064 ret = -EINVAL;
1065 goto out_delete;
1066 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001067
1068 /*
1069 * Do not use 'isa' recorded in kvm_exit tracepoint since it is not
1070 * traced in the old kernel.
1071 */
David Ahern1afe1d12013-08-05 21:41:34 -04001072 ret = cpu_isa_config(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001073 if (ret < 0)
Taeung Song41b98362015-07-01 00:18:44 +09001074 goto out_delete;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001075
Taeung Song41b98362015-07-01 00:18:44 +09001076 ret = perf_session__process_events(kvm->session);
1077
1078out_delete:
1079 perf_session__delete(kvm->session);
1080 return ret;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001081}
1082
David Ahern2e73f002013-08-05 21:41:37 -04001083static int parse_target_str(struct perf_kvm_stat *kvm)
1084{
Alexander Yarygin3ae4a762014-09-01 17:44:53 +04001085 if (kvm->opts.target.pid) {
1086 kvm->pid_list = intlist__new(kvm->opts.target.pid);
David Ahern2e73f002013-08-05 21:41:37 -04001087 if (kvm->pid_list == NULL) {
1088 pr_err("Error parsing process id string\n");
1089 return -EINVAL;
1090 }
1091 }
1092
1093 return 0;
1094}
1095
Xiao Guangrong37860632012-11-15 14:17:01 +08001096static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001097{
1098 int ret = -EINVAL;
David Ahernde332ac2012-10-02 22:09:53 -06001099 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001100
David Ahern2e73f002013-08-05 21:41:37 -04001101 if (parse_target_str(kvm) != 0)
1102 goto exit;
1103
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001104 if (!verify_vcpu(vcpu))
1105 goto exit;
1106
David Ahernde332ac2012-10-02 22:09:53 -06001107 if (!select_key(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001108 goto exit;
1109
David Ahernde332ac2012-10-02 22:09:53 -06001110 if (!register_kvm_events_ops(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001111 goto exit;
1112
David Ahernde332ac2012-10-02 22:09:53 -06001113 init_kvm_event_record(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001114 setup_pager();
1115
David Ahernde332ac2012-10-02 22:09:53 -06001116 ret = read_events(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001117 if (ret)
1118 goto exit;
1119
David Ahernde332ac2012-10-02 22:09:53 -06001120 sort_result(kvm);
1121 print_result(kvm);
1122
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001123exit:
1124 return ret;
1125}
1126
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001127#define STRDUP_FAIL_EXIT(s) \
1128 ({ char *_p; \
1129 _p = strdup(s); \
1130 if (!_p) \
1131 return -ENOMEM; \
1132 _p; \
1133 })
1134
Hemant Kumar066d3592016-01-28 12:03:06 +05301135int __weak setup_kvm_events_tp(struct perf_kvm_stat *kvm __maybe_unused)
1136{
1137 return 0;
1138}
1139
Xiao Guangrong37860632012-11-15 14:17:01 +08001140static int
1141kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001142{
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001143 unsigned int rec_argc, i, j, events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001144 const char **rec_argv;
David Ahern8fdd84c2013-08-02 14:05:42 -06001145 const char * const record_args[] = {
1146 "record",
1147 "-R",
David Ahern8fdd84c2013-08-02 14:05:42 -06001148 "-m", "1024",
1149 "-c", "1",
1150 };
Namhyung Kimf45d20f2014-10-23 00:15:47 +09001151 const char * const kvm_stat_record_usage[] = {
1152 "perf kvm stat record [<options>]",
1153 NULL
1154 };
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001155 const char * const *events_tp;
Hemant Kumar066d3592016-01-28 12:03:06 +05301156 int ret;
1157
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001158 events_tp_size = 0;
Hemant Kumar066d3592016-01-28 12:03:06 +05301159 ret = setup_kvm_events_tp(kvm);
1160 if (ret < 0) {
1161 pr_err("Unable to setup the kvm tracepoints\n");
1162 return ret;
1163 }
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001164
1165 for (events_tp = kvm_events_tp; *events_tp; events_tp++)
1166 events_tp_size++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001167
David Ahern8fdd84c2013-08-02 14:05:42 -06001168 rec_argc = ARRAY_SIZE(record_args) + argc + 2 +
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001169 2 * events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001170 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1171
1172 if (rec_argv == NULL)
1173 return -ENOMEM;
1174
1175 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1176 rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]);
1177
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001178 for (j = 0; j < events_tp_size; j++) {
David Ahern8fdd84c2013-08-02 14:05:42 -06001179 rec_argv[i++] = "-e";
1180 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]);
1181 }
1182
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001183 rec_argv[i++] = STRDUP_FAIL_EXIT("-o");
David Ahernde332ac2012-10-02 22:09:53 -06001184 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001185
1186 for (j = 1; j < (unsigned int)argc; j++, i++)
1187 rec_argv[i] = argv[j];
1188
Namhyung Kimf45d20f2014-10-23 00:15:47 +09001189 set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN);
1190 set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN);
1191 set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN);
1192
1193 set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED);
1194 set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED);
1195 set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED);
1196 set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED);
1197 set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED);
1198 set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED);
1199 set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED);
1200 set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED);
1201 set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED);
1202 set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED);
1203 set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED);
1204 set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED);
1205 set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED);
1206 set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED);
1207 set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED);
1208
1209 record_usage = kvm_stat_record_usage;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001210 return cmd_record(i, rec_argv, NULL);
1211}
1212
Xiao Guangrong37860632012-11-15 14:17:01 +08001213static int
1214kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001215{
David Ahernde332ac2012-10-02 22:09:53 -06001216 const struct option kvm_events_report_options[] = {
1217 OPT_STRING(0, "event", &kvm->report_event, "report event",
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001218 "event for reporting: vmexit, "
1219 "mmio (x86 only), ioport (x86 only)"),
David Ahernde332ac2012-10-02 22:09:53 -06001220 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1221 "vcpu id to report"),
1222 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1223 "key for sorting: sample(sort by samples number)"
1224 " time (sort by avg time)"),
Alexander Yarygin3ae4a762014-09-01 17:44:53 +04001225 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
David Ahern2e73f002013-08-05 21:41:37 -04001226 "analyze events only for given process id(s)"),
Yunlong Song8cc5ec1f2015-04-02 21:47:13 +08001227 OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"),
David Ahernde332ac2012-10-02 22:09:53 -06001228 OPT_END()
1229 };
1230
1231 const char * const kvm_events_report_usage[] = {
1232 "perf kvm stat report [<options>]",
1233 NULL
1234 };
1235
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001236 if (argc) {
1237 argc = parse_options(argc, argv,
1238 kvm_events_report_options,
1239 kvm_events_report_usage, 0);
1240 if (argc)
1241 usage_with_options(kvm_events_report_usage,
1242 kvm_events_report_options);
1243 }
1244
Alexander Yaryginf1819572014-09-01 17:44:54 +04001245 if (!kvm->opts.target.pid)
1246 kvm->opts.target.system_wide = true;
1247
David Ahernde332ac2012-10-02 22:09:53 -06001248 return kvm_events_report_vcpu(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001249}
1250
David Ahern87419c92013-10-29 10:43:16 -06001251#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001252static struct perf_evlist *kvm_live_event_list(void)
1253{
1254 struct perf_evlist *evlist;
1255 char *tp, *name, *sys;
David Ahern1afe1d12013-08-05 21:41:34 -04001256 int err = -1;
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001257 const char * const *events_tp;
David Ahern1afe1d12013-08-05 21:41:34 -04001258
1259 evlist = perf_evlist__new();
1260 if (evlist == NULL)
1261 return NULL;
1262
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001263 for (events_tp = kvm_events_tp; *events_tp; events_tp++) {
David Ahern1afe1d12013-08-05 21:41:34 -04001264
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001265 tp = strdup(*events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001266 if (tp == NULL)
1267 goto out;
1268
1269 /* split tracepoint into subsystem and name */
1270 sys = tp;
1271 name = strchr(tp, ':');
1272 if (name == NULL) {
1273 pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n",
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001274 *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001275 free(tp);
1276 goto out;
1277 }
1278 *name = '\0';
1279 name++;
1280
1281 if (perf_evlist__add_newtp(evlist, sys, name, NULL)) {
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001282 pr_err("Failed to add %s tracepoint to the list\n", *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001283 free(tp);
1284 goto out;
1285 }
1286
1287 free(tp);
1288 }
1289
1290 err = 0;
1291
1292out:
1293 if (err) {
1294 perf_evlist__delete(evlist);
1295 evlist = NULL;
1296 }
1297
1298 return evlist;
1299}
1300
1301static int kvm_events_live(struct perf_kvm_stat *kvm,
1302 int argc, const char **argv)
1303{
1304 char errbuf[BUFSIZ];
1305 int err;
1306
1307 const struct option live_options[] = {
1308 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
1309 "record events on existing process id"),
Jiri Olsa994a1f72013-09-01 12:36:12 +02001310 OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages",
1311 "number of mmap data pages",
1312 perf_evlist__parse_mmap_pages),
David Ahern1afe1d12013-08-05 21:41:34 -04001313 OPT_INCR('v', "verbose", &verbose,
1314 "be more verbose (show counter open errors, etc)"),
1315 OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide,
1316 "system-wide collection from all CPUs"),
1317 OPT_UINTEGER('d', "display", &kvm->display_time,
1318 "time in seconds between display updates"),
1319 OPT_STRING(0, "event", &kvm->report_event, "report event",
Alexander Yarygin99d348a2014-12-10 14:28:10 +01001320 "event for reporting: "
1321 "vmexit, mmio (x86 only), ioport (x86 only)"),
David Ahern1afe1d12013-08-05 21:41:34 -04001322 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1323 "vcpu id to report"),
1324 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1325 "key for sorting: sample(sort by samples number)"
1326 " time (sort by avg time)"),
David Ahern70f7b4a2013-08-07 21:56:38 -04001327 OPT_U64(0, "duration", &kvm->duration,
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001328 "show events other than"
1329 " HLT (x86 only) or Wait state (s390 only)"
1330 " that take longer than duration usecs"),
Kan Liang9d9cad72015-06-17 09:51:11 -04001331 OPT_UINTEGER(0, "proc-map-timeout", &kvm->opts.proc_map_timeout,
1332 "per thread proc mmap processing timeout in ms"),
David Ahern1afe1d12013-08-05 21:41:34 -04001333 OPT_END()
1334 };
1335 const char * const live_usage[] = {
1336 "perf kvm stat live [<options>]",
1337 NULL
1338 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001339 struct perf_data_file file = {
1340 .mode = PERF_DATA_MODE_WRITE,
1341 };
David Ahern1afe1d12013-08-05 21:41:34 -04001342
1343
1344 /* event handling */
1345 kvm->tool.sample = process_sample_event;
1346 kvm->tool.comm = perf_event__process_comm;
1347 kvm->tool.exit = perf_event__process_exit;
1348 kvm->tool.fork = perf_event__process_fork;
1349 kvm->tool.lost = process_lost_event;
Jiri Olsa0a8cb852014-07-06 14:18:21 +02001350 kvm->tool.ordered_events = true;
David Ahern1afe1d12013-08-05 21:41:34 -04001351 perf_tool__fill_defaults(&kvm->tool);
1352
1353 /* set defaults */
1354 kvm->display_time = 1;
1355 kvm->opts.user_interval = 1;
1356 kvm->opts.mmap_pages = 512;
1357 kvm->opts.target.uses_mmap = false;
1358 kvm->opts.target.uid_str = NULL;
1359 kvm->opts.target.uid = UINT_MAX;
Kan Liang9d9cad72015-06-17 09:51:11 -04001360 kvm->opts.proc_map_timeout = 500;
David Ahern1afe1d12013-08-05 21:41:34 -04001361
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001362 symbol__init(NULL);
David Ahern1afe1d12013-08-05 21:41:34 -04001363 disable_buildid_cache();
1364
1365 use_browser = 0;
David Ahern1afe1d12013-08-05 21:41:34 -04001366
1367 if (argc) {
1368 argc = parse_options(argc, argv, live_options,
1369 live_usage, 0);
1370 if (argc)
1371 usage_with_options(live_usage, live_options);
1372 }
1373
David Ahern70f7b4a2013-08-07 21:56:38 -04001374 kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */
1375
David Ahern1afe1d12013-08-05 21:41:34 -04001376 /*
1377 * target related setups
1378 */
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001379 err = target__validate(&kvm->opts.target);
David Ahern1afe1d12013-08-05 21:41:34 -04001380 if (err) {
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001381 target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ);
David Ahern1afe1d12013-08-05 21:41:34 -04001382 ui__warning("%s", errbuf);
1383 }
1384
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001385 if (target__none(&kvm->opts.target))
David Ahern1afe1d12013-08-05 21:41:34 -04001386 kvm->opts.target.system_wide = true;
1387
1388
1389 /*
1390 * generate the event list
1391 */
Hemant Kumar066d3592016-01-28 12:03:06 +05301392 err = setup_kvm_events_tp(kvm);
1393 if (err < 0) {
1394 pr_err("Unable to setup the kvm tracepoints\n");
1395 return err;
1396 }
1397
David Ahern1afe1d12013-08-05 21:41:34 -04001398 kvm->evlist = kvm_live_event_list();
1399 if (kvm->evlist == NULL) {
1400 err = -1;
1401 goto out;
1402 }
1403
1404 symbol_conf.nr_events = kvm->evlist->nr_entries;
1405
1406 if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0)
1407 usage_with_options(live_usage, live_options);
1408
1409 /*
1410 * perf session
1411 */
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001412 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahern1afe1d12013-08-05 21:41:34 -04001413 if (kvm->session == NULL) {
Taeung Song52e028342014-09-24 10:33:37 +09001414 err = -1;
David Ahern1afe1d12013-08-05 21:41:34 -04001415 goto out;
1416 }
1417 kvm->session->evlist = kvm->evlist;
1418 perf_session__set_id_hdr_size(kvm->session);
Alexander Yarygin673d6592014-10-03 18:40:12 +04001419 ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true);
Arnaldo Carvalho de Meloa33fbd52013-11-11 11:36:12 -03001420 machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
Kan Liang9d9cad72015-06-17 09:51:11 -04001421 kvm->evlist->threads, false, kvm->opts.proc_map_timeout);
David Ahern1afe1d12013-08-05 21:41:34 -04001422 err = kvm_live_open_events(kvm);
1423 if (err)
1424 goto out;
1425
1426 err = kvm_events_live_report(kvm);
1427
1428out:
David Ahern1afe1d12013-08-05 21:41:34 -04001429 if (kvm->session)
1430 perf_session__delete(kvm->session);
1431 kvm->session = NULL;
Arnaldo Carvalho de Melo03ad9742014-01-03 15:56:06 -03001432 if (kvm->evlist)
David Ahern1afe1d12013-08-05 21:41:34 -04001433 perf_evlist__delete(kvm->evlist);
David Ahern1afe1d12013-08-05 21:41:34 -04001434
1435 return err;
1436}
David Ahern87419c92013-10-29 10:43:16 -06001437#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001438
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001439static void print_kvm_stat_usage(void)
1440{
1441 printf("Usage: perf kvm stat <command>\n\n");
1442
1443 printf("# Available commands:\n");
1444 printf("\trecord: record kvm events\n");
1445 printf("\treport: report statistical data of kvm events\n");
David Ahern1afe1d12013-08-05 21:41:34 -04001446 printf("\tlive: live reporting of statistical data of kvm events\n");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001447
1448 printf("\nOtherwise, it is the alias of 'perf stat':\n");
1449}
1450
Xiao Guangrong37860632012-11-15 14:17:01 +08001451static int kvm_cmd_stat(const char *file_name, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001452{
Xiao Guangrong37860632012-11-15 14:17:01 +08001453 struct perf_kvm_stat kvm = {
1454 .file_name = file_name,
1455
1456 .trace_vcpu = -1,
1457 .report_event = "vmexit",
1458 .sort_key = "sample",
1459
Xiao Guangrong37860632012-11-15 14:17:01 +08001460 };
1461
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001462 if (argc == 1) {
1463 print_kvm_stat_usage();
1464 goto perf_stat;
1465 }
1466
1467 if (!strncmp(argv[1], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001468 return kvm_events_record(&kvm, argc - 1, argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001469
1470 if (!strncmp(argv[1], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001471 return kvm_events_report(&kvm, argc - 1 , argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001472
David Ahern87419c92013-10-29 10:43:16 -06001473#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001474 if (!strncmp(argv[1], "live", 4))
1475 return kvm_events_live(&kvm, argc - 1 , argv + 1);
David Ahern87419c92013-10-29 10:43:16 -06001476#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001477
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001478perf_stat:
1479 return cmd_stat(argc, argv, NULL);
1480}
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001481#endif /* HAVE_KVM_STAT_SUPPORT */
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001482
Xiao Guangrong37860632012-11-15 14:17:01 +08001483static int __cmd_record(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001484{
1485 int rec_argc, i = 0, j;
1486 const char **rec_argv;
1487
1488 rec_argc = argc + 2;
1489 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1490 rec_argv[i++] = strdup("record");
1491 rec_argv[i++] = strdup("-o");
Xiao Guangrong37860632012-11-15 14:17:01 +08001492 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001493 for (j = 1; j < argc; j++, i++)
1494 rec_argv[i] = argv[j];
1495
1496 BUG_ON(i != rec_argc);
1497
1498 return cmd_record(i, rec_argv, NULL);
1499}
1500
Xiao Guangrong37860632012-11-15 14:17:01 +08001501static int __cmd_report(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001502{
1503 int rec_argc, i = 0, j;
1504 const char **rec_argv;
1505
1506 rec_argc = argc + 2;
1507 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1508 rec_argv[i++] = strdup("report");
1509 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001510 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001511 for (j = 1; j < argc; j++, i++)
1512 rec_argv[i] = argv[j];
1513
1514 BUG_ON(i != rec_argc);
1515
1516 return cmd_report(i, rec_argv, NULL);
1517}
1518
Xiao Guangrong37860632012-11-15 14:17:01 +08001519static int
1520__cmd_buildid_list(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001521{
1522 int rec_argc, i = 0, j;
1523 const char **rec_argv;
1524
1525 rec_argc = argc + 2;
1526 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1527 rec_argv[i++] = strdup("buildid-list");
1528 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001529 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001530 for (j = 1; j < argc; j++, i++)
1531 rec_argv[i] = argv[j];
1532
1533 BUG_ON(i != rec_argc);
1534
1535 return cmd_buildid_list(i, rec_argv, NULL);
1536}
1537
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001538int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001539{
Arnaldo Carvalho de Melo20914ce52012-12-19 10:59:29 -03001540 const char *file_name = NULL;
David Ahernde332ac2012-10-02 22:09:53 -06001541 const struct option kvm_options[] = {
Xiao Guangrong37860632012-11-15 14:17:01 +08001542 OPT_STRING('i', "input", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001543 "Input file name"),
Xiao Guangrong37860632012-11-15 14:17:01 +08001544 OPT_STRING('o', "output", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001545 "Output file name"),
1546 OPT_BOOLEAN(0, "guest", &perf_guest,
1547 "Collect guest os data"),
1548 OPT_BOOLEAN(0, "host", &perf_host,
1549 "Collect host os data"),
1550 OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory",
1551 "guest mount directory under which every guest os"
1552 " instance has a subdir"),
1553 OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name,
1554 "file", "file saving guest os vmlinux"),
1555 OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms,
1556 "file", "file saving guest os /proc/kallsyms"),
1557 OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
1558 "file", "file saving guest os /proc/modules"),
Dongsheng Yang100b9072013-12-09 12:15:11 -05001559 OPT_INCR('v', "verbose", &verbose,
1560 "be more verbose (show counter open errors, etc)"),
David Ahernde332ac2012-10-02 22:09:53 -06001561 OPT_END()
1562 };
1563
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001564 const char *const kvm_subcommands[] = { "top", "record", "report", "diff",
1565 "buildid-list", "stat", NULL };
1566 const char *kvm_usage[] = { NULL, NULL };
David Ahernde332ac2012-10-02 22:09:53 -06001567
Joerg Roedel1aed2672012-01-04 17:54:20 +01001568 perf_host = 0;
1569 perf_guest = 1;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001570
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001571 argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage,
1572 PARSE_OPT_STOP_AT_NON_OPTION);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001573 if (!argc)
1574 usage_with_options(kvm_usage, kvm_options);
1575
1576 if (!perf_host)
1577 perf_guest = 1;
1578
Xiao Guangrong37860632012-11-15 14:17:01 +08001579 if (!file_name) {
Dongsheng Yange1a2b172013-12-06 17:25:51 -05001580 file_name = get_filename_for_perf_kvm();
David Ahernde332ac2012-10-02 22:09:53 -06001581
Xiao Guangrong37860632012-11-15 14:17:01 +08001582 if (!file_name) {
David Ahernde332ac2012-10-02 22:09:53 -06001583 pr_err("Failed to allocate memory for filename\n");
1584 return -ENOMEM;
1585 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001586 }
1587
1588 if (!strncmp(argv[0], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001589 return __cmd_record(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001590 else if (!strncmp(argv[0], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001591 return __cmd_report(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001592 else if (!strncmp(argv[0], "diff", 4))
1593 return cmd_diff(argc, argv, NULL);
1594 else if (!strncmp(argv[0], "top", 3))
1595 return cmd_top(argc, argv, NULL);
1596 else if (!strncmp(argv[0], "buildid-list", 12))
Xiao Guangrong37860632012-11-15 14:17:01 +08001597 return __cmd_buildid_list(file_name, argc, argv);
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001598#ifdef HAVE_KVM_STAT_SUPPORT
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001599 else if (!strncmp(argv[0], "stat", 4))
Xiao Guangrong37860632012-11-15 14:17:01 +08001600 return kvm_cmd_stat(file_name, argc, argv);
Xiao Guangrong73210902012-11-19 16:19:21 +08001601#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001602 else
1603 usage_with_options(kvm_usage, kvm_options);
1604
1605 return 0;
1606}