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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"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080013#include "util/parse-options.h"
14#include "util/trace-event.h"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080015#include "util/debug.h"
Borislav Petkov553873e2013-12-09 17:14:23 +010016#include <api/fs/debugfs.h>
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080017#include "util/tool.h"
18#include "util/stat.h"
David Ahern1afe1d12013-08-05 21:41:34 -040019#include "util/top.h"
Jiri Olsaf5fc1412013-10-15 16:27:32 +020020#include "util/data.h"
Arnaldo Carvalho de Melod704ebd2015-03-03 12:37:54 -030021#include "util/ordered-events.h"
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080022
23#include <sys/prctl.h>
David Ahern87419c92013-10-29 10:43:16 -060024#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -040025#include <sys/timerfd.h>
David Ahern87419c92013-10-29 10:43:16 -060026#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080027
David Ahern1afe1d12013-08-05 21:41:34 -040028#include <termios.h>
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080029#include <semaphore.h>
30#include <pthread.h>
31#include <math.h>
32
Alexander Yaryginda50ad62014-07-03 17:59:49 +040033#ifdef HAVE_KVM_STAT_SUPPORT
Alexander Yarygin44b38022014-07-03 18:29:04 +040034#include <asm/kvm_perf.h>
Alexander Yarygin9daa8122014-07-03 18:29:05 +040035#include "util/kvm-stat.h"
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080036
Alexander Yarygin9daa8122014-07-03 18:29:05 +040037void exit_event_get_key(struct perf_evsel *evsel,
38 struct perf_sample *sample,
39 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080040{
41 key->info = 0;
Alexander Yarygin44b38022014-07-03 18:29:04 +040042 key->key = perf_evsel__intval(evsel, sample, KVM_EXIT_REASON);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080043}
44
Alexander Yarygin9daa8122014-07-03 18:29:05 +040045bool kvm_exit_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080046{
Alexander Yarygin44b38022014-07-03 18:29:04 +040047 return !strcmp(evsel->name, KVM_EXIT_TRACE);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080048}
49
Alexander Yarygin9daa8122014-07-03 18:29:05 +040050bool exit_event_begin(struct perf_evsel *evsel,
51 struct perf_sample *sample, struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080052{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030053 if (kvm_exit_event(evsel)) {
54 exit_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080055 return true;
56 }
57
58 return false;
59}
60
Alexander Yarygin9daa8122014-07-03 18:29:05 +040061bool kvm_entry_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080062{
Alexander Yarygin44b38022014-07-03 18:29:04 +040063 return !strcmp(evsel->name, KVM_ENTRY_TRACE);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080064}
65
Alexander Yarygin9daa8122014-07-03 18:29:05 +040066bool exit_event_end(struct perf_evsel *evsel,
67 struct perf_sample *sample __maybe_unused,
68 struct event_key *key __maybe_unused)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080069{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030070 return kvm_entry_event(evsel);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080071}
72
Alexander Yarygindf74c132014-07-03 17:59:50 +040073static const char *get_exit_reason(struct perf_kvm_stat *kvm,
74 struct exit_reasons_table *tbl,
75 u64 exit_code)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080076{
Alexander Yarygindf74c132014-07-03 17:59:50 +040077 while (tbl->reason != NULL) {
David Ahernde332ac2012-10-02 22:09:53 -060078 if (tbl->exit_code == exit_code)
79 return tbl->reason;
80 tbl++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080081 }
82
83 pr_err("unknown kvm exit code:%lld on %s\n",
David Ahernde332ac2012-10-02 22:09:53 -060084 (unsigned long long)exit_code, kvm->exit_reasons_isa);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080085 return "UNKNOWN";
86}
87
Alexander Yarygin9daa8122014-07-03 18:29:05 +040088void exit_event_decode_key(struct perf_kvm_stat *kvm,
89 struct event_key *key,
90 char *decode)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080091{
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +040092 const char *exit_reason = get_exit_reason(kvm, key->exit_reasons,
Alexander Yarygindf74c132014-07-03 17:59:50 +040093 key->key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080094
Alexander Yarygin44b38022014-07-03 18:29:04 +040095 scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080096}
97
Xiao Guangrong37860632012-11-15 14:17:01 +080098static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080099{
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400100 struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800101
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400102 for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) {
103 if (!strcmp(events_ops->name, kvm->report_event)) {
104 kvm->events_ops = events_ops->ops;
105 return true;
106 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800107 }
108
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400109 return false;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800110}
111
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800112struct vcpu_event_record {
113 int vcpu_id;
114 u64 start_time;
115 struct kvm_event *last_event;
116};
117
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800118
Xiao Guangrong37860632012-11-15 14:17:01 +0800119static void init_kvm_event_record(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800120{
David Ahernb880dee2012-10-08 11:17:30 -0600121 unsigned int i;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800122
David Ahernb880dee2012-10-08 11:17:30 -0600123 for (i = 0; i < EVENTS_CACHE_SIZE; i++)
David Ahernde332ac2012-10-02 22:09:53 -0600124 INIT_LIST_HEAD(&kvm->kvm_events_cache[i]);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800125}
126
David Ahern87419c92013-10-29 10:43:16 -0600127#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400128static void clear_events_cache_stats(struct list_head *kvm_events_cache)
129{
130 struct list_head *head;
131 struct kvm_event *event;
132 unsigned int i;
David Ahern62d04db2013-08-05 21:41:35 -0400133 int j;
David Ahern1afe1d12013-08-05 21:41:34 -0400134
135 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
136 head = &kvm_events_cache[i];
137 list_for_each_entry(event, head, hash_entry) {
138 /* reset stats for event */
David Ahern62d04db2013-08-05 21:41:35 -0400139 event->total.time = 0;
140 init_stats(&event->total.stats);
141
142 for (j = 0; j < event->max_vcpu; ++j) {
143 event->vcpu[j].time = 0;
144 init_stats(&event->vcpu[j].stats);
145 }
David Ahern1afe1d12013-08-05 21:41:34 -0400146 }
147 }
148}
David Ahern87419c92013-10-29 10:43:16 -0600149#endif
David Ahern1afe1d12013-08-05 21:41:34 -0400150
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800151static int kvm_events_hash_fn(u64 key)
152{
153 return key & (EVENTS_CACHE_SIZE - 1);
154}
155
156static bool kvm_event_expand(struct kvm_event *event, int vcpu_id)
157{
158 int old_max_vcpu = event->max_vcpu;
David Ahern6ca5f302013-05-25 18:24:46 -0600159 void *prev;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800160
161 if (vcpu_id < event->max_vcpu)
162 return true;
163
164 while (event->max_vcpu <= vcpu_id)
165 event->max_vcpu += DEFAULT_VCPU_NUM;
166
David Ahern6ca5f302013-05-25 18:24:46 -0600167 prev = event->vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800168 event->vcpu = realloc(event->vcpu,
169 event->max_vcpu * sizeof(*event->vcpu));
170 if (!event->vcpu) {
David Ahern6ca5f302013-05-25 18:24:46 -0600171 free(prev);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800172 pr_err("Not enough memory\n");
173 return false;
174 }
175
176 memset(event->vcpu + old_max_vcpu, 0,
177 (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu));
178 return true;
179}
180
181static struct kvm_event *kvm_alloc_init_event(struct event_key *key)
182{
183 struct kvm_event *event;
184
185 event = zalloc(sizeof(*event));
186 if (!event) {
187 pr_err("Not enough memory\n");
188 return NULL;
189 }
190
191 event->key = *key;
Alexander Yaryginacb61fc2014-04-09 16:21:59 +0200192 init_stats(&event->total.stats);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800193 return event;
194}
195
Xiao Guangrong37860632012-11-15 14:17:01 +0800196static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600197 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800198{
199 struct kvm_event *event;
200 struct list_head *head;
201
202 BUG_ON(key->key == INVALID_KEY);
203
David Ahernde332ac2012-10-02 22:09:53 -0600204 head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)];
David Ahern355afe82012-10-08 11:17:32 -0600205 list_for_each_entry(event, head, hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800206 if (event->key.key == key->key && event->key.info == key->info)
207 return event;
David Ahern355afe82012-10-08 11:17:32 -0600208 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800209
210 event = kvm_alloc_init_event(key);
211 if (!event)
212 return NULL;
213
214 list_add(&event->hash_entry, head);
215 return event;
216}
217
Xiao Guangrong37860632012-11-15 14:17:01 +0800218static bool handle_begin_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600219 struct vcpu_event_record *vcpu_record,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800220 struct event_key *key, u64 timestamp)
221{
222 struct kvm_event *event = NULL;
223
224 if (key->key != INVALID_KEY)
David Ahernde332ac2012-10-02 22:09:53 -0600225 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800226
227 vcpu_record->last_event = event;
228 vcpu_record->start_time = timestamp;
229 return true;
230}
231
232static void
233kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff)
234{
235 kvm_stats->time += time_diff;
236 update_stats(&kvm_stats->stats, time_diff);
237}
238
239static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event)
240{
241 struct kvm_event_stats *kvm_stats = &event->total;
242
243 if (vcpu_id != -1)
244 kvm_stats = &event->vcpu[vcpu_id];
245
246 return rel_stddev_stats(stddev_stats(&kvm_stats->stats),
247 avg_stats(&kvm_stats->stats));
248}
249
250static bool update_kvm_event(struct kvm_event *event, int vcpu_id,
251 u64 time_diff)
252{
David Ahern2aa8eab2012-10-08 11:17:35 -0600253 if (vcpu_id == -1) {
254 kvm_update_event_stats(&event->total, time_diff);
255 return true;
256 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800257
258 if (!kvm_event_expand(event, vcpu_id))
259 return false;
260
261 kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff);
262 return true;
263}
264
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400265static bool is_child_event(struct perf_kvm_stat *kvm,
266 struct perf_evsel *evsel,
267 struct perf_sample *sample,
268 struct event_key *key)
269{
270 struct child_event_ops *child_ops;
271
272 child_ops = kvm->events_ops->child_ops;
273
274 if (!child_ops)
275 return false;
276
277 for (; child_ops->name; child_ops++) {
278 if (!strcmp(evsel->name, child_ops->name)) {
279 child_ops->get_key(evsel, sample, key);
280 return true;
281 }
282 }
283
284 return false;
285}
286
287static bool handle_child_event(struct perf_kvm_stat *kvm,
288 struct vcpu_event_record *vcpu_record,
289 struct event_key *key,
290 struct perf_sample *sample __maybe_unused)
291{
292 struct kvm_event *event = NULL;
293
294 if (key->key != INVALID_KEY)
295 event = find_create_kvm_event(kvm, key);
296
297 vcpu_record->last_event = event;
298
299 return true;
300}
301
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400302static bool skip_event(const char *event)
303{
304 const char * const *skip_events;
305
306 for (skip_events = kvm_skip_events; *skip_events; skip_events++)
307 if (!strcmp(event, *skip_events))
308 return true;
309
310 return false;
311}
312
Xiao Guangrong37860632012-11-15 14:17:01 +0800313static bool handle_end_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600314 struct vcpu_event_record *vcpu_record,
315 struct event_key *key,
David Ahern70f7b4a2013-08-07 21:56:38 -0400316 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800317{
318 struct kvm_event *event;
319 u64 time_begin, time_diff;
David Ahern2aa8eab2012-10-08 11:17:35 -0600320 int vcpu;
321
322 if (kvm->trace_vcpu == -1)
323 vcpu = -1;
324 else
325 vcpu = vcpu_record->vcpu_id;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800326
327 event = vcpu_record->last_event;
328 time_begin = vcpu_record->start_time;
329
330 /* The begin event is not caught. */
331 if (!time_begin)
332 return true;
333
334 /*
335 * In some case, the 'begin event' only records the start timestamp,
336 * the actual event is recognized in the 'end event' (e.g. mmio-event).
337 */
338
339 /* Both begin and end events did not get the key. */
340 if (!event && key->key == INVALID_KEY)
341 return true;
342
343 if (!event)
David Ahernde332ac2012-10-02 22:09:53 -0600344 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800345
346 if (!event)
347 return false;
348
349 vcpu_record->last_event = NULL;
350 vcpu_record->start_time = 0;
351
David Ahern1afe1d12013-08-05 21:41:34 -0400352 /* seems to happen once in a while during live mode */
David Ahern70f7b4a2013-08-07 21:56:38 -0400353 if (sample->time < time_begin) {
David Ahern1afe1d12013-08-05 21:41:34 -0400354 pr_debug("End time before begin time; skipping event.\n");
355 return true;
356 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800357
David Ahern70f7b4a2013-08-07 21:56:38 -0400358 time_diff = sample->time - time_begin;
359
360 if (kvm->duration && time_diff > kvm->duration) {
Alexander Yarygin44b38022014-07-03 18:29:04 +0400361 char decode[DECODE_STR_LEN];
David Ahern70f7b4a2013-08-07 21:56:38 -0400362
363 kvm->events_ops->decode_key(kvm, &event->key, decode);
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400364 if (!skip_event(decode)) {
David Ahern70f7b4a2013-08-07 21:56:38 -0400365 pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n",
366 sample->time, sample->pid, vcpu_record->vcpu_id,
367 decode, time_diff/1000);
368 }
369 }
370
David Ahern2aa8eab2012-10-08 11:17:35 -0600371 return update_kvm_event(event, vcpu, time_diff);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800372}
373
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300374static
375struct vcpu_event_record *per_vcpu_record(struct thread *thread,
376 struct perf_evsel *evsel,
377 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800378{
379 /* Only kvm_entry records vcpu id. */
Namhyung Kim69e865c2014-10-06 09:46:02 +0900380 if (!thread__priv(thread) && kvm_entry_event(evsel)) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800381 struct vcpu_event_record *vcpu_record;
382
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300383 vcpu_record = zalloc(sizeof(*vcpu_record));
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800384 if (!vcpu_record) {
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300385 pr_err("%s: Not enough memory\n", __func__);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800386 return NULL;
387 }
388
Alexander Yarygin44b38022014-07-03 18:29:04 +0400389 vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, VCPU_ID);
Namhyung Kim69e865c2014-10-06 09:46:02 +0900390 thread__set_priv(thread, vcpu_record);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800391 }
392
Namhyung Kim69e865c2014-10-06 09:46:02 +0900393 return thread__priv(thread);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800394}
395
Xiao Guangrong37860632012-11-15 14:17:01 +0800396static bool handle_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600397 struct thread *thread,
398 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300399 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800400{
401 struct vcpu_event_record *vcpu_record;
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400402 struct event_key key = { .key = INVALID_KEY,
403 .exit_reasons = kvm->exit_reasons };
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800404
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300405 vcpu_record = per_vcpu_record(thread, evsel, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800406 if (!vcpu_record)
407 return true;
408
David Ahern2aa8eab2012-10-08 11:17:35 -0600409 /* only process events for vcpus user cares about */
410 if ((kvm->trace_vcpu != -1) &&
411 (kvm->trace_vcpu != vcpu_record->vcpu_id))
412 return true;
413
David Ahernde332ac2012-10-02 22:09:53 -0600414 if (kvm->events_ops->is_begin_event(evsel, sample, &key))
415 return handle_begin_event(kvm, vcpu_record, &key, sample->time);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800416
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400417 if (is_child_event(kvm, evsel, sample, &key))
418 return handle_child_event(kvm, vcpu_record, &key, sample);
419
David Ahernde332ac2012-10-02 22:09:53 -0600420 if (kvm->events_ops->is_end_event(evsel, sample, &key))
David Ahern70f7b4a2013-08-07 21:56:38 -0400421 return handle_end_event(kvm, vcpu_record, &key, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800422
423 return true;
424}
425
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800426#define GET_EVENT_KEY(func, field) \
427static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \
428{ \
429 if (vcpu == -1) \
430 return event->total.field; \
431 \
432 if (vcpu >= event->max_vcpu) \
433 return 0; \
434 \
435 return event->vcpu[vcpu].field; \
436}
437
438#define COMPARE_EVENT_KEY(func, field) \
439GET_EVENT_KEY(func, field) \
440static int compare_kvm_event_ ## func(struct kvm_event *one, \
441 struct kvm_event *two, int vcpu)\
442{ \
443 return get_event_ ##func(one, vcpu) > \
444 get_event_ ##func(two, vcpu); \
445}
446
447GET_EVENT_KEY(time, time);
448COMPARE_EVENT_KEY(count, stats.n);
449COMPARE_EVENT_KEY(mean, stats.mean);
David Ahern62d04db2013-08-05 21:41:35 -0400450GET_EVENT_KEY(max, stats.max);
451GET_EVENT_KEY(min, stats.min);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800452
453#define DEF_SORT_NAME_KEY(name, compare_key) \
454 { #name, compare_kvm_event_ ## compare_key }
455
456static struct kvm_event_key keys[] = {
457 DEF_SORT_NAME_KEY(sample, count),
458 DEF_SORT_NAME_KEY(time, mean),
459 { NULL, NULL }
460};
461
Xiao Guangrong37860632012-11-15 14:17:01 +0800462static bool select_key(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800463{
464 int i;
465
466 for (i = 0; keys[i].name; i++) {
David Ahernde332ac2012-10-02 22:09:53 -0600467 if (!strcmp(keys[i].name, kvm->sort_key)) {
468 kvm->compare = keys[i].key;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800469 return true;
470 }
471 }
472
David Ahernde332ac2012-10-02 22:09:53 -0600473 pr_err("Unknown compare key:%s\n", kvm->sort_key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800474 return false;
475}
476
David Ahernde332ac2012-10-02 22:09:53 -0600477static void insert_to_result(struct rb_root *result, struct kvm_event *event,
478 key_cmp_fun bigger, int vcpu)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800479{
David Ahernde332ac2012-10-02 22:09:53 -0600480 struct rb_node **rb = &result->rb_node;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800481 struct rb_node *parent = NULL;
482 struct kvm_event *p;
483
484 while (*rb) {
485 p = container_of(*rb, struct kvm_event, rb);
486 parent = *rb;
487
488 if (bigger(event, p, vcpu))
489 rb = &(*rb)->rb_left;
490 else
491 rb = &(*rb)->rb_right;
492 }
493
494 rb_link_node(&event->rb, parent, rb);
David Ahernde332ac2012-10-02 22:09:53 -0600495 rb_insert_color(&event->rb, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800496}
497
Xiao Guangrong37860632012-11-15 14:17:01 +0800498static void
499update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800500{
David Ahernde332ac2012-10-02 22:09:53 -0600501 int vcpu = kvm->trace_vcpu;
502
503 kvm->total_count += get_event_count(event, vcpu);
504 kvm->total_time += get_event_time(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800505}
506
507static bool event_is_valid(struct kvm_event *event, int vcpu)
508{
509 return !!get_event_count(event, vcpu);
510}
511
Xiao Guangrong37860632012-11-15 14:17:01 +0800512static void sort_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800513{
514 unsigned int i;
David Ahernde332ac2012-10-02 22:09:53 -0600515 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800516 struct kvm_event *event;
517
David Ahern355afe82012-10-08 11:17:32 -0600518 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
519 list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800520 if (event_is_valid(event, vcpu)) {
David Ahernde332ac2012-10-02 22:09:53 -0600521 update_total_count(kvm, event);
522 insert_to_result(&kvm->result, event,
523 kvm->compare, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800524 }
David Ahern355afe82012-10-08 11:17:32 -0600525 }
526 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800527}
528
529/* returns left most element of result, and erase it */
David Ahernde332ac2012-10-02 22:09:53 -0600530static struct kvm_event *pop_from_result(struct rb_root *result)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800531{
David Ahernde332ac2012-10-02 22:09:53 -0600532 struct rb_node *node = rb_first(result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800533
534 if (!node)
535 return NULL;
536
David Ahernde332ac2012-10-02 22:09:53 -0600537 rb_erase(node, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800538 return container_of(node, struct kvm_event, rb);
539}
540
David Ahern1afe1d12013-08-05 21:41:34 -0400541static void print_vcpu_info(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800542{
David Ahern1afe1d12013-08-05 21:41:34 -0400543 int vcpu = kvm->trace_vcpu;
544
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800545 pr_info("Analyze events for ");
546
Alexander Yarygin1f3e5b52014-09-01 17:44:55 +0400547 if (kvm->opts.target.system_wide)
548 pr_info("all VMs, ");
549 else if (kvm->opts.target.pid)
550 pr_info("pid(s) %s, ", kvm->opts.target.pid);
551 else
552 pr_info("dazed and confused on what is monitored, ");
David Ahern1afe1d12013-08-05 21:41:34 -0400553
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800554 if (vcpu == -1)
555 pr_info("all VCPUs:\n\n");
556 else
557 pr_info("VCPU %d:\n\n", vcpu);
558}
559
David Ahern1afe1d12013-08-05 21:41:34 -0400560static void show_timeofday(void)
561{
562 char date[64];
563 struct timeval tv;
564 struct tm ltime;
565
566 gettimeofday(&tv, NULL);
567 if (localtime_r(&tv.tv_sec, &ltime)) {
568 strftime(date, sizeof(date), "%H:%M:%S", &ltime);
569 pr_info("%s.%06ld", date, tv.tv_usec);
570 } else
571 pr_info("00:00:00.000000");
572
573 return;
574}
575
Xiao Guangrong37860632012-11-15 14:17:01 +0800576static void print_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800577{
Alexander Yarygin44b38022014-07-03 18:29:04 +0400578 char decode[DECODE_STR_LEN];
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800579 struct kvm_event *event;
David Ahernde332ac2012-10-02 22:09:53 -0600580 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800581
David Ahern1afe1d12013-08-05 21:41:34 -0400582 if (kvm->live) {
583 puts(CONSOLE_CLEAR);
584 show_timeofday();
585 }
586
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800587 pr_info("\n\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400588 print_vcpu_info(kvm);
Alexander Yarygin44b38022014-07-03 18:29:04 +0400589 pr_info("%*s ", DECODE_STR_LEN, kvm->events_ops->name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800590 pr_info("%10s ", "Samples");
591 pr_info("%9s ", "Samples%");
592
593 pr_info("%9s ", "Time%");
Christian Borntraegerb048a242014-07-31 13:13:51 +0200594 pr_info("%11s ", "Min Time");
595 pr_info("%11s ", "Max Time");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800596 pr_info("%16s ", "Avg time");
597 pr_info("\n\n");
598
David Ahernde332ac2012-10-02 22:09:53 -0600599 while ((event = pop_from_result(&kvm->result))) {
David Ahern62d04db2013-08-05 21:41:35 -0400600 u64 ecount, etime, max, min;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800601
602 ecount = get_event_count(event, vcpu);
603 etime = get_event_time(event, vcpu);
David Ahern62d04db2013-08-05 21:41:35 -0400604 max = get_event_max(event, vcpu);
605 min = get_event_min(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800606
David Ahernde332ac2012-10-02 22:09:53 -0600607 kvm->events_ops->decode_key(kvm, &event->key, decode);
Alexander Yarygin44b38022014-07-03 18:29:04 +0400608 pr_info("%*s ", DECODE_STR_LEN, decode);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800609 pr_info("%10llu ", (unsigned long long)ecount);
David Ahernde332ac2012-10-02 22:09:53 -0600610 pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100);
611 pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100);
Christian Borntraegerb048a242014-07-31 13:13:51 +0200612 pr_info("%9.2fus ", (double)min / 1e3);
613 pr_info("%9.2fus ", (double)max / 1e3);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800614 pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,
615 kvm_event_rel_stddev(vcpu, event));
616 pr_info("\n");
617 }
618
David Aherne4f76372012-10-08 11:17:34 -0600619 pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n",
620 kvm->total_count, kvm->total_time / 1e3);
David Ahern1afe1d12013-08-05 21:41:34 -0400621
622 if (kvm->lost_events)
623 pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
624}
625
David Ahern87419c92013-10-29 10:43:16 -0600626#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400627static int process_lost_event(struct perf_tool *tool,
628 union perf_event *event __maybe_unused,
629 struct perf_sample *sample __maybe_unused,
630 struct machine *machine __maybe_unused)
631{
632 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool);
633
634 kvm->lost_events++;
635 return 0;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800636}
David Ahern87419c92013-10-29 10:43:16 -0600637#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800638
David Ahern2e73f002013-08-05 21:41:37 -0400639static bool skip_sample(struct perf_kvm_stat *kvm,
640 struct perf_sample *sample)
641{
642 if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL)
643 return true;
644
645 return false;
646}
647
David Ahernde332ac2012-10-02 22:09:53 -0600648static int process_sample_event(struct perf_tool *tool,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800649 union perf_event *event,
650 struct perf_sample *sample,
651 struct perf_evsel *evsel,
652 struct machine *machine)
653{
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300654 int err = 0;
David Ahern2e73f002013-08-05 21:41:37 -0400655 struct thread *thread;
Xiao Guangrong37860632012-11-15 14:17:01 +0800656 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat,
657 tool);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800658
David Ahern2e73f002013-08-05 21:41:37 -0400659 if (skip_sample(kvm, sample))
660 return 0;
661
Adrian Hunter314add62013-08-27 11:23:03 +0300662 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800663 if (thread == NULL) {
664 pr_debug("problem processing %d event, skipping it.\n",
665 event->header.type);
666 return -1;
667 }
668
David Ahernde332ac2012-10-02 22:09:53 -0600669 if (!handle_kvm_event(kvm, thread, evsel, sample))
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300670 err = -1;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800671
Arnaldo Carvalho de Melob91fc392015-04-06 20:43:22 -0300672 thread__put(thread);
673 return err;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800674}
675
David Ahern1afe1d12013-08-05 21:41:34 -0400676static int cpu_isa_config(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800677{
David Ahern1afe1d12013-08-05 21:41:34 -0400678 char buf[64], *cpuid;
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400679 int err;
David Ahern1afe1d12013-08-05 21:41:34 -0400680
681 if (kvm->live) {
682 err = get_cpuid(buf, sizeof(buf));
683 if (err != 0) {
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400684 pr_err("Failed to look up CPU type\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400685 return err;
686 }
687 cpuid = buf;
688 } else
689 cpuid = kvm->session->header.env.cpuid;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800690
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400691 if (!cpuid) {
692 pr_err("Failed to look up CPU type\n");
693 return -EINVAL;
694 }
695
696 err = cpu_isa_init(kvm, cpuid);
697 if (err == -ENOTSUP)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800698 pr_err("CPU %s is not supported.\n", cpuid);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800699
Alexander Yarygin65c647a2014-07-03 17:59:51 +0400700 return err;
David Ahern1afe1d12013-08-05 21:41:34 -0400701}
702
703static bool verify_vcpu(int vcpu)
704{
705 if (vcpu != -1 && vcpu < 0) {
706 pr_err("Invalid vcpu:%d.\n", vcpu);
707 return false;
708 }
709
710 return true;
711}
712
David Ahern87419c92013-10-29 10:43:16 -0600713#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400714/* keeping the max events to a modest level to keep
715 * the processing of samples per mmap smooth.
716 */
717#define PERF_KVM__MAX_EVENTS_PER_MMAP 25
718
719static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
720 u64 *mmap_time)
721{
722 union perf_event *event;
723 struct perf_sample sample;
724 s64 n = 0;
725 int err;
726
727 *mmap_time = ULLONG_MAX;
728 while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) {
729 err = perf_evlist__parse_sample(kvm->evlist, event, &sample);
730 if (err) {
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800731 perf_evlist__mmap_consume(kvm->evlist, idx);
David Ahern1afe1d12013-08-05 21:41:34 -0400732 pr_err("Failed to parse sample\n");
733 return -1;
734 }
735
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -0300736 err = perf_session__queue_event(kvm->session, event, &sample, 0);
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800737 /*
Arnaldo Carvalho de Melob7b61cb2015-03-03 11:58:45 -0300738 * FIXME: Here we can't consume the event, as perf_session__queue_event will
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800739 * point to it, and it'll get possibly overwritten by the kernel.
740 */
741 perf_evlist__mmap_consume(kvm->evlist, idx);
742
David Ahern1afe1d12013-08-05 21:41:34 -0400743 if (err) {
744 pr_err("Failed to enqueue sample: %d\n", err);
745 return -1;
746 }
747
748 /* save time stamp of our first sample for this mmap */
749 if (n == 0)
750 *mmap_time = sample.time;
751
752 /* limit events per mmap handled all at once */
753 n++;
754 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
755 break;
756 }
757
758 return n;
759}
760
761static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm)
762{
763 int i, err, throttled = 0;
764 s64 n, ntotal = 0;
765 u64 flush_time = ULLONG_MAX, mmap_time;
766
767 for (i = 0; i < kvm->evlist->nr_mmaps; i++) {
768 n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time);
769 if (n < 0)
770 return -1;
771
772 /* flush time is going to be the minimum of all the individual
773 * mmap times. Essentially, we flush all the samples queued up
774 * from the last pass under our minimal start time -- that leaves
775 * a very small race for samples to come in with a lower timestamp.
776 * The ioctl to return the perf_clock timestamp should close the
777 * race entirely.
778 */
779 if (mmap_time < flush_time)
780 flush_time = mmap_time;
781
782 ntotal += n;
783 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
784 throttled = 1;
785 }
786
787 /* flush queue after each round in which we processed events */
788 if (ntotal) {
Arnaldo Carvalho de Melod704ebd2015-03-03 12:37:54 -0300789 struct ordered_events *oe = &kvm->session->ordered_events;
790
791 oe->next_flush = flush_time;
792 err = ordered_events__flush(oe, OE_FLUSH__ROUND);
David Ahern1afe1d12013-08-05 21:41:34 -0400793 if (err) {
794 if (kvm->lost_events)
795 pr_info("\nLost events: %" PRIu64 "\n\n",
796 kvm->lost_events);
797 return err;
798 }
799 }
800
801 return throttled;
802}
803
804static volatile int done;
805
806static void sig_handler(int sig __maybe_unused)
807{
808 done = 1;
809}
810
811static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm)
812{
813 struct itimerspec new_value;
814 int rc = -1;
815
816 kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
817 if (kvm->timerfd < 0) {
818 pr_err("timerfd_create failed\n");
819 goto out;
820 }
821
822 new_value.it_value.tv_sec = kvm->display_time;
823 new_value.it_value.tv_nsec = 0;
824 new_value.it_interval.tv_sec = kvm->display_time;
825 new_value.it_interval.tv_nsec = 0;
826
827 if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) {
828 pr_err("timerfd_settime failed: %d\n", errno);
829 close(kvm->timerfd);
830 goto out;
831 }
832
833 rc = 0;
834out:
835 return rc;
836}
837
838static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm)
839{
840 uint64_t c;
841 int rc;
842
843 rc = read(kvm->timerfd, &c, sizeof(uint64_t));
844 if (rc < 0) {
845 if (errno == EAGAIN)
846 return 0;
847
848 pr_err("Failed to read timer fd: %d\n", errno);
849 return -1;
850 }
851
852 if (rc != sizeof(uint64_t)) {
853 pr_err("Error reading timer fd - invalid size returned\n");
854 return -1;
855 }
856
857 if (c != 1)
858 pr_debug("Missed timer beats: %" PRIu64 "\n", c-1);
859
860 /* update display */
861 sort_result(kvm);
862 print_result(kvm);
863
864 /* reset counts */
865 clear_events_cache_stats(kvm->kvm_events_cache);
866 kvm->total_count = 0;
867 kvm->total_time = 0;
868 kvm->lost_events = 0;
869
870 return 0;
871}
872
873static int fd_set_nonblock(int fd)
874{
875 long arg = 0;
876
877 arg = fcntl(fd, F_GETFL);
878 if (arg < 0) {
879 pr_err("Failed to get current flags for fd %d\n", fd);
880 return -1;
881 }
882
883 if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) {
884 pr_err("Failed to set non-block option on fd %d\n", fd);
885 return -1;
886 }
887
888 return 0;
889}
890
Jiri Olsad5b41302014-08-11 10:50:09 +0200891static int perf_kvm__handle_stdin(void)
David Ahern1afe1d12013-08-05 21:41:34 -0400892{
893 int c;
894
David Ahern1afe1d12013-08-05 21:41:34 -0400895 c = getc(stdin);
David Ahern1afe1d12013-08-05 21:41:34 -0400896 if (c == 'q')
897 return 1;
898
899 return 0;
900}
901
902static int kvm_events_live_report(struct perf_kvm_stat *kvm)
903{
Jiri Olsa1ca72262014-10-01 18:00:29 +0200904 int nr_stdin, ret, err = -EINVAL;
Jiri Olsad5b41302014-08-11 10:50:09 +0200905 struct termios save;
David Ahern1afe1d12013-08-05 21:41:34 -0400906
907 /* live flag must be set first */
908 kvm->live = true;
909
910 ret = cpu_isa_config(kvm);
911 if (ret < 0)
912 return ret;
913
914 if (!verify_vcpu(kvm->trace_vcpu) ||
915 !select_key(kvm) ||
916 !register_kvm_events_ops(kvm)) {
917 goto out;
918 }
919
Jiri Olsad5b41302014-08-11 10:50:09 +0200920 set_term_quiet_input(&save);
David Ahern1afe1d12013-08-05 21:41:34 -0400921 init_kvm_event_record(kvm);
922
David Ahern1afe1d12013-08-05 21:41:34 -0400923 signal(SIGINT, sig_handler);
924 signal(SIGTERM, sig_handler);
925
David Ahern1afe1d12013-08-05 21:41:34 -0400926 /* add timer fd */
927 if (perf_kvm__timerfd_create(kvm) < 0) {
928 err = -1;
929 goto out;
930 }
931
Jiri Olsafe636ad2014-10-01 18:00:27 +0200932 if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0)
Arnaldo Carvalho de Melo0a04c9e2014-08-18 17:12:30 -0300933 goto out;
934
Jiri Olsa0cae0132014-10-01 18:00:28 +0200935 nr_stdin = perf_evlist__add_pollfd(kvm->evlist, fileno(stdin));
936 if (nr_stdin < 0)
Arnaldo Carvalho de Melo0a04c9e2014-08-18 17:12:30 -0300937 goto out;
938
David Ahern1afe1d12013-08-05 21:41:34 -0400939 if (fd_set_nonblock(fileno(stdin)) != 0)
940 goto out;
941
942 /* everything is good - enable the events and process */
943 perf_evlist__enable(kvm->evlist);
944
945 while (!done) {
Jiri Olsa1ca72262014-10-01 18:00:29 +0200946 struct fdarray *fda = &kvm->evlist->pollfd;
David Ahern1afe1d12013-08-05 21:41:34 -0400947 int rc;
948
949 rc = perf_kvm__mmap_read(kvm);
950 if (rc < 0)
951 break;
952
953 err = perf_kvm__handle_timerfd(kvm);
954 if (err)
955 goto out;
956
Jiri Olsa1ca72262014-10-01 18:00:29 +0200957 if (fda->entries[nr_stdin].revents & POLLIN)
Jiri Olsad5b41302014-08-11 10:50:09 +0200958 done = perf_kvm__handle_stdin();
David Ahern1afe1d12013-08-05 21:41:34 -0400959
960 if (!rc && !done)
Jiri Olsa1ca72262014-10-01 18:00:29 +0200961 err = fdarray__poll(fda, 100);
David Ahern1afe1d12013-08-05 21:41:34 -0400962 }
963
964 perf_evlist__disable(kvm->evlist);
965
966 if (err == 0) {
967 sort_result(kvm);
968 print_result(kvm);
969 }
970
971out:
972 if (kvm->timerfd >= 0)
973 close(kvm->timerfd);
974
Jiri Olsad5b41302014-08-11 10:50:09 +0200975 tcsetattr(0, TCSAFLUSH, &save);
David Ahern1afe1d12013-08-05 21:41:34 -0400976 return err;
977}
978
979static int kvm_live_open_events(struct perf_kvm_stat *kvm)
980{
981 int err, rc = -1;
982 struct perf_evsel *pos;
983 struct perf_evlist *evlist = kvm->evlist;
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +0000984 char sbuf[STRERR_BUFSIZE];
David Ahern1afe1d12013-08-05 21:41:34 -0400985
986 perf_evlist__config(evlist, &kvm->opts);
987
988 /*
989 * Note: exclude_{guest,host} do not apply here.
990 * This command processes KVM tracepoints from host only
991 */
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -0300992 evlist__for_each(evlist, pos) {
David Ahern1afe1d12013-08-05 21:41:34 -0400993 struct perf_event_attr *attr = &pos->attr;
994
995 /* make sure these *are* set */
Adrian Huntere71aa282013-09-06 22:40:12 +0300996 perf_evsel__set_sample_bit(pos, TID);
997 perf_evsel__set_sample_bit(pos, TIME);
998 perf_evsel__set_sample_bit(pos, CPU);
999 perf_evsel__set_sample_bit(pos, RAW);
David Ahern1afe1d12013-08-05 21:41:34 -04001000 /* make sure these are *not*; want as small a sample as possible */
Adrian Huntere71aa282013-09-06 22:40:12 +03001001 perf_evsel__reset_sample_bit(pos, PERIOD);
1002 perf_evsel__reset_sample_bit(pos, IP);
1003 perf_evsel__reset_sample_bit(pos, CALLCHAIN);
1004 perf_evsel__reset_sample_bit(pos, ADDR);
1005 perf_evsel__reset_sample_bit(pos, READ);
David Ahern1afe1d12013-08-05 21:41:34 -04001006 attr->mmap = 0;
1007 attr->comm = 0;
1008 attr->task = 0;
1009
1010 attr->sample_period = 1;
1011
1012 attr->watermark = 0;
1013 attr->wakeup_events = 1000;
1014
1015 /* will enable all once we are ready */
1016 attr->disabled = 1;
1017 }
1018
1019 err = perf_evlist__open(evlist);
1020 if (err < 0) {
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +00001021 printf("Couldn't create the events: %s\n",
1022 strerror_r(errno, sbuf, sizeof(sbuf)));
David Ahern1afe1d12013-08-05 21:41:34 -04001023 goto out;
1024 }
1025
1026 if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) {
Masami Hiramatsuf9f33fd2014-08-14 02:22:51 +00001027 ui__error("Failed to mmap the events: %s\n",
1028 strerror_r(errno, sbuf, sizeof(sbuf)));
David Ahern1afe1d12013-08-05 21:41:34 -04001029 perf_evlist__close(evlist);
1030 goto out;
1031 }
1032
1033 rc = 0;
1034
1035out:
1036 return rc;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001037}
David Ahern87419c92013-10-29 10:43:16 -06001038#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001039
Xiao Guangrong37860632012-11-15 14:17:01 +08001040static int read_events(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001041{
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001042 int ret;
1043
David Ahernde332ac2012-10-02 22:09:53 -06001044 struct perf_tool eops = {
1045 .sample = process_sample_event,
1046 .comm = perf_event__process_comm,
Jiri Olsa0a8cb852014-07-06 14:18:21 +02001047 .ordered_events = true,
David Ahernde332ac2012-10-02 22:09:53 -06001048 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001049 struct perf_data_file file = {
Dongsheng Yang476b3a82013-12-09 18:47:03 -05001050 .path = kvm->file_name,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001051 .mode = PERF_DATA_MODE_READ,
Yunlong Song8cc5ec1f2015-04-02 21:47:13 +08001052 .force = kvm->force,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001053 };
David Ahernde332ac2012-10-02 22:09:53 -06001054
1055 kvm->tool = eops;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001056 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahernde332ac2012-10-02 22:09:53 -06001057 if (!kvm->session) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001058 pr_err("Initializing perf session failed\n");
Taeung Song52e028342014-09-24 10:33:37 +09001059 return -1;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001060 }
1061
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001062 symbol__init(&kvm->session->header.env);
Namhyung Kim14d37f32014-08-12 15:40:39 +09001063
Taeung Song41b98362015-07-01 00:18:44 +09001064 if (!perf_session__has_traces(kvm->session, "kvm record")) {
1065 ret = -EINVAL;
1066 goto out_delete;
1067 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001068
1069 /*
1070 * Do not use 'isa' recorded in kvm_exit tracepoint since it is not
1071 * traced in the old kernel.
1072 */
David Ahern1afe1d12013-08-05 21:41:34 -04001073 ret = cpu_isa_config(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001074 if (ret < 0)
Taeung Song41b98362015-07-01 00:18:44 +09001075 goto out_delete;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001076
Taeung Song41b98362015-07-01 00:18:44 +09001077 ret = perf_session__process_events(kvm->session);
1078
1079out_delete:
1080 perf_session__delete(kvm->session);
1081 return ret;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001082}
1083
David Ahern2e73f002013-08-05 21:41:37 -04001084static int parse_target_str(struct perf_kvm_stat *kvm)
1085{
Alexander Yarygin3ae4a762014-09-01 17:44:53 +04001086 if (kvm->opts.target.pid) {
1087 kvm->pid_list = intlist__new(kvm->opts.target.pid);
David Ahern2e73f002013-08-05 21:41:37 -04001088 if (kvm->pid_list == NULL) {
1089 pr_err("Error parsing process id string\n");
1090 return -EINVAL;
1091 }
1092 }
1093
1094 return 0;
1095}
1096
Xiao Guangrong37860632012-11-15 14:17:01 +08001097static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001098{
1099 int ret = -EINVAL;
David Ahernde332ac2012-10-02 22:09:53 -06001100 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001101
David Ahern2e73f002013-08-05 21:41:37 -04001102 if (parse_target_str(kvm) != 0)
1103 goto exit;
1104
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001105 if (!verify_vcpu(vcpu))
1106 goto exit;
1107
David Ahernde332ac2012-10-02 22:09:53 -06001108 if (!select_key(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001109 goto exit;
1110
David Ahernde332ac2012-10-02 22:09:53 -06001111 if (!register_kvm_events_ops(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001112 goto exit;
1113
David Ahernde332ac2012-10-02 22:09:53 -06001114 init_kvm_event_record(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001115 setup_pager();
1116
David Ahernde332ac2012-10-02 22:09:53 -06001117 ret = read_events(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001118 if (ret)
1119 goto exit;
1120
David Ahernde332ac2012-10-02 22:09:53 -06001121 sort_result(kvm);
1122 print_result(kvm);
1123
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001124exit:
1125 return ret;
1126}
1127
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001128#define STRDUP_FAIL_EXIT(s) \
1129 ({ char *_p; \
1130 _p = strdup(s); \
1131 if (!_p) \
1132 return -ENOMEM; \
1133 _p; \
1134 })
1135
Xiao Guangrong37860632012-11-15 14:17:01 +08001136static int
1137kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001138{
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001139 unsigned int rec_argc, i, j, events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001140 const char **rec_argv;
David Ahern8fdd84c2013-08-02 14:05:42 -06001141 const char * const record_args[] = {
1142 "record",
1143 "-R",
David Ahern8fdd84c2013-08-02 14:05:42 -06001144 "-m", "1024",
1145 "-c", "1",
1146 };
Namhyung Kimf45d20f2014-10-23 00:15:47 +09001147 const char * const kvm_stat_record_usage[] = {
1148 "perf kvm stat record [<options>]",
1149 NULL
1150 };
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001151 const char * const *events_tp;
1152 events_tp_size = 0;
1153
1154 for (events_tp = kvm_events_tp; *events_tp; events_tp++)
1155 events_tp_size++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001156
David Ahern8fdd84c2013-08-02 14:05:42 -06001157 rec_argc = ARRAY_SIZE(record_args) + argc + 2 +
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001158 2 * events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001159 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1160
1161 if (rec_argv == NULL)
1162 return -ENOMEM;
1163
1164 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1165 rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]);
1166
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001167 for (j = 0; j < events_tp_size; j++) {
David Ahern8fdd84c2013-08-02 14:05:42 -06001168 rec_argv[i++] = "-e";
1169 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]);
1170 }
1171
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001172 rec_argv[i++] = STRDUP_FAIL_EXIT("-o");
David Ahernde332ac2012-10-02 22:09:53 -06001173 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001174
1175 for (j = 1; j < (unsigned int)argc; j++, i++)
1176 rec_argv[i] = argv[j];
1177
Namhyung Kimf45d20f2014-10-23 00:15:47 +09001178 set_option_flag(record_options, 'e', "event", PARSE_OPT_HIDDEN);
1179 set_option_flag(record_options, 0, "filter", PARSE_OPT_HIDDEN);
1180 set_option_flag(record_options, 'R', "raw-samples", PARSE_OPT_HIDDEN);
1181
1182 set_option_flag(record_options, 'F', "freq", PARSE_OPT_DISABLED);
1183 set_option_flag(record_options, 0, "group", PARSE_OPT_DISABLED);
1184 set_option_flag(record_options, 'g', NULL, PARSE_OPT_DISABLED);
1185 set_option_flag(record_options, 0, "call-graph", PARSE_OPT_DISABLED);
1186 set_option_flag(record_options, 'd', "data", PARSE_OPT_DISABLED);
1187 set_option_flag(record_options, 'T', "timestamp", PARSE_OPT_DISABLED);
1188 set_option_flag(record_options, 'P', "period", PARSE_OPT_DISABLED);
1189 set_option_flag(record_options, 'n', "no-samples", PARSE_OPT_DISABLED);
1190 set_option_flag(record_options, 'N', "no-buildid-cache", PARSE_OPT_DISABLED);
1191 set_option_flag(record_options, 'B', "no-buildid", PARSE_OPT_DISABLED);
1192 set_option_flag(record_options, 'G', "cgroup", PARSE_OPT_DISABLED);
1193 set_option_flag(record_options, 'b', "branch-any", PARSE_OPT_DISABLED);
1194 set_option_flag(record_options, 'j', "branch-filter", PARSE_OPT_DISABLED);
1195 set_option_flag(record_options, 'W', "weight", PARSE_OPT_DISABLED);
1196 set_option_flag(record_options, 0, "transaction", PARSE_OPT_DISABLED);
1197
1198 record_usage = kvm_stat_record_usage;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001199 return cmd_record(i, rec_argv, NULL);
1200}
1201
Xiao Guangrong37860632012-11-15 14:17:01 +08001202static int
1203kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001204{
David Ahernde332ac2012-10-02 22:09:53 -06001205 const struct option kvm_events_report_options[] = {
1206 OPT_STRING(0, "event", &kvm->report_event, "report event",
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001207 "event for reporting: vmexit, "
1208 "mmio (x86 only), ioport (x86 only)"),
David Ahernde332ac2012-10-02 22:09:53 -06001209 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1210 "vcpu id to report"),
1211 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1212 "key for sorting: sample(sort by samples number)"
1213 " time (sort by avg time)"),
Alexander Yarygin3ae4a762014-09-01 17:44:53 +04001214 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
David Ahern2e73f002013-08-05 21:41:37 -04001215 "analyze events only for given process id(s)"),
Yunlong Song8cc5ec1f2015-04-02 21:47:13 +08001216 OPT_BOOLEAN('f', "force", &kvm->force, "don't complain, do it"),
David Ahernde332ac2012-10-02 22:09:53 -06001217 OPT_END()
1218 };
1219
1220 const char * const kvm_events_report_usage[] = {
1221 "perf kvm stat report [<options>]",
1222 NULL
1223 };
1224
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001225 if (argc) {
1226 argc = parse_options(argc, argv,
1227 kvm_events_report_options,
1228 kvm_events_report_usage, 0);
1229 if (argc)
1230 usage_with_options(kvm_events_report_usage,
1231 kvm_events_report_options);
1232 }
1233
Alexander Yaryginf1819572014-09-01 17:44:54 +04001234 if (!kvm->opts.target.pid)
1235 kvm->opts.target.system_wide = true;
1236
David Ahernde332ac2012-10-02 22:09:53 -06001237 return kvm_events_report_vcpu(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001238}
1239
David Ahern87419c92013-10-29 10:43:16 -06001240#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001241static struct perf_evlist *kvm_live_event_list(void)
1242{
1243 struct perf_evlist *evlist;
1244 char *tp, *name, *sys;
David Ahern1afe1d12013-08-05 21:41:34 -04001245 int err = -1;
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001246 const char * const *events_tp;
David Ahern1afe1d12013-08-05 21:41:34 -04001247
1248 evlist = perf_evlist__new();
1249 if (evlist == NULL)
1250 return NULL;
1251
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001252 for (events_tp = kvm_events_tp; *events_tp; events_tp++) {
David Ahern1afe1d12013-08-05 21:41:34 -04001253
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001254 tp = strdup(*events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001255 if (tp == NULL)
1256 goto out;
1257
1258 /* split tracepoint into subsystem and name */
1259 sys = tp;
1260 name = strchr(tp, ':');
1261 if (name == NULL) {
1262 pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n",
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001263 *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001264 free(tp);
1265 goto out;
1266 }
1267 *name = '\0';
1268 name++;
1269
1270 if (perf_evlist__add_newtp(evlist, sys, name, NULL)) {
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001271 pr_err("Failed to add %s tracepoint to the list\n", *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001272 free(tp);
1273 goto out;
1274 }
1275
1276 free(tp);
1277 }
1278
1279 err = 0;
1280
1281out:
1282 if (err) {
1283 perf_evlist__delete(evlist);
1284 evlist = NULL;
1285 }
1286
1287 return evlist;
1288}
1289
1290static int kvm_events_live(struct perf_kvm_stat *kvm,
1291 int argc, const char **argv)
1292{
1293 char errbuf[BUFSIZ];
1294 int err;
1295
1296 const struct option live_options[] = {
1297 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
1298 "record events on existing process id"),
Jiri Olsa994a1f72013-09-01 12:36:12 +02001299 OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages",
1300 "number of mmap data pages",
1301 perf_evlist__parse_mmap_pages),
David Ahern1afe1d12013-08-05 21:41:34 -04001302 OPT_INCR('v', "verbose", &verbose,
1303 "be more verbose (show counter open errors, etc)"),
1304 OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide,
1305 "system-wide collection from all CPUs"),
1306 OPT_UINTEGER('d', "display", &kvm->display_time,
1307 "time in seconds between display updates"),
1308 OPT_STRING(0, "event", &kvm->report_event, "report event",
Alexander Yarygin99d348a2014-12-10 14:28:10 +01001309 "event for reporting: "
1310 "vmexit, mmio (x86 only), ioport (x86 only)"),
David Ahern1afe1d12013-08-05 21:41:34 -04001311 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1312 "vcpu id to report"),
1313 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1314 "key for sorting: sample(sort by samples number)"
1315 " time (sort by avg time)"),
David Ahern70f7b4a2013-08-07 21:56:38 -04001316 OPT_U64(0, "duration", &kvm->duration,
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001317 "show events other than"
1318 " HLT (x86 only) or Wait state (s390 only)"
1319 " that take longer than duration usecs"),
Kan Liang9d9cad72015-06-17 09:51:11 -04001320 OPT_UINTEGER(0, "proc-map-timeout", &kvm->opts.proc_map_timeout,
1321 "per thread proc mmap processing timeout in ms"),
David Ahern1afe1d12013-08-05 21:41:34 -04001322 OPT_END()
1323 };
1324 const char * const live_usage[] = {
1325 "perf kvm stat live [<options>]",
1326 NULL
1327 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001328 struct perf_data_file file = {
1329 .mode = PERF_DATA_MODE_WRITE,
1330 };
David Ahern1afe1d12013-08-05 21:41:34 -04001331
1332
1333 /* event handling */
1334 kvm->tool.sample = process_sample_event;
1335 kvm->tool.comm = perf_event__process_comm;
1336 kvm->tool.exit = perf_event__process_exit;
1337 kvm->tool.fork = perf_event__process_fork;
1338 kvm->tool.lost = process_lost_event;
Jiri Olsa0a8cb852014-07-06 14:18:21 +02001339 kvm->tool.ordered_events = true;
David Ahern1afe1d12013-08-05 21:41:34 -04001340 perf_tool__fill_defaults(&kvm->tool);
1341
1342 /* set defaults */
1343 kvm->display_time = 1;
1344 kvm->opts.user_interval = 1;
1345 kvm->opts.mmap_pages = 512;
1346 kvm->opts.target.uses_mmap = false;
1347 kvm->opts.target.uid_str = NULL;
1348 kvm->opts.target.uid = UINT_MAX;
Kan Liang9d9cad72015-06-17 09:51:11 -04001349 kvm->opts.proc_map_timeout = 500;
David Ahern1afe1d12013-08-05 21:41:34 -04001350
Namhyung Kim0a7e6d12014-08-12 15:40:45 +09001351 symbol__init(NULL);
David Ahern1afe1d12013-08-05 21:41:34 -04001352 disable_buildid_cache();
1353
1354 use_browser = 0;
1355 setup_browser(false);
1356
1357 if (argc) {
1358 argc = parse_options(argc, argv, live_options,
1359 live_usage, 0);
1360 if (argc)
1361 usage_with_options(live_usage, live_options);
1362 }
1363
David Ahern70f7b4a2013-08-07 21:56:38 -04001364 kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */
1365
David Ahern1afe1d12013-08-05 21:41:34 -04001366 /*
1367 * target related setups
1368 */
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001369 err = target__validate(&kvm->opts.target);
David Ahern1afe1d12013-08-05 21:41:34 -04001370 if (err) {
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001371 target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ);
David Ahern1afe1d12013-08-05 21:41:34 -04001372 ui__warning("%s", errbuf);
1373 }
1374
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001375 if (target__none(&kvm->opts.target))
David Ahern1afe1d12013-08-05 21:41:34 -04001376 kvm->opts.target.system_wide = true;
1377
1378
1379 /*
1380 * generate the event list
1381 */
1382 kvm->evlist = kvm_live_event_list();
1383 if (kvm->evlist == NULL) {
1384 err = -1;
1385 goto out;
1386 }
1387
1388 symbol_conf.nr_events = kvm->evlist->nr_entries;
1389
1390 if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0)
1391 usage_with_options(live_usage, live_options);
1392
1393 /*
1394 * perf session
1395 */
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001396 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahern1afe1d12013-08-05 21:41:34 -04001397 if (kvm->session == NULL) {
Taeung Song52e028342014-09-24 10:33:37 +09001398 err = -1;
David Ahern1afe1d12013-08-05 21:41:34 -04001399 goto out;
1400 }
1401 kvm->session->evlist = kvm->evlist;
1402 perf_session__set_id_hdr_size(kvm->session);
Alexander Yarygin673d6592014-10-03 18:40:12 +04001403 ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true);
Arnaldo Carvalho de Meloa33fbd52013-11-11 11:36:12 -03001404 machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
Kan Liang9d9cad72015-06-17 09:51:11 -04001405 kvm->evlist->threads, false, kvm->opts.proc_map_timeout);
David Ahern1afe1d12013-08-05 21:41:34 -04001406 err = kvm_live_open_events(kvm);
1407 if (err)
1408 goto out;
1409
1410 err = kvm_events_live_report(kvm);
1411
1412out:
1413 exit_browser(0);
1414
1415 if (kvm->session)
1416 perf_session__delete(kvm->session);
1417 kvm->session = NULL;
Arnaldo Carvalho de Melo03ad9742014-01-03 15:56:06 -03001418 if (kvm->evlist)
David Ahern1afe1d12013-08-05 21:41:34 -04001419 perf_evlist__delete(kvm->evlist);
David Ahern1afe1d12013-08-05 21:41:34 -04001420
1421 return err;
1422}
David Ahern87419c92013-10-29 10:43:16 -06001423#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001424
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001425static void print_kvm_stat_usage(void)
1426{
1427 printf("Usage: perf kvm stat <command>\n\n");
1428
1429 printf("# Available commands:\n");
1430 printf("\trecord: record kvm events\n");
1431 printf("\treport: report statistical data of kvm events\n");
David Ahern1afe1d12013-08-05 21:41:34 -04001432 printf("\tlive: live reporting of statistical data of kvm events\n");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001433
1434 printf("\nOtherwise, it is the alias of 'perf stat':\n");
1435}
1436
Xiao Guangrong37860632012-11-15 14:17:01 +08001437static int kvm_cmd_stat(const char *file_name, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001438{
Xiao Guangrong37860632012-11-15 14:17:01 +08001439 struct perf_kvm_stat kvm = {
1440 .file_name = file_name,
1441
1442 .trace_vcpu = -1,
1443 .report_event = "vmexit",
1444 .sort_key = "sample",
1445
Xiao Guangrong37860632012-11-15 14:17:01 +08001446 };
1447
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001448 if (argc == 1) {
1449 print_kvm_stat_usage();
1450 goto perf_stat;
1451 }
1452
1453 if (!strncmp(argv[1], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001454 return kvm_events_record(&kvm, argc - 1, argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001455
1456 if (!strncmp(argv[1], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001457 return kvm_events_report(&kvm, argc - 1 , argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001458
David Ahern87419c92013-10-29 10:43:16 -06001459#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001460 if (!strncmp(argv[1], "live", 4))
1461 return kvm_events_live(&kvm, argc - 1 , argv + 1);
David Ahern87419c92013-10-29 10:43:16 -06001462#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001463
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001464perf_stat:
1465 return cmd_stat(argc, argv, NULL);
1466}
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001467#endif /* HAVE_KVM_STAT_SUPPORT */
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001468
Xiao Guangrong37860632012-11-15 14:17:01 +08001469static int __cmd_record(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001470{
1471 int rec_argc, i = 0, j;
1472 const char **rec_argv;
1473
1474 rec_argc = argc + 2;
1475 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1476 rec_argv[i++] = strdup("record");
1477 rec_argv[i++] = strdup("-o");
Xiao Guangrong37860632012-11-15 14:17:01 +08001478 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001479 for (j = 1; j < argc; j++, i++)
1480 rec_argv[i] = argv[j];
1481
1482 BUG_ON(i != rec_argc);
1483
1484 return cmd_record(i, rec_argv, NULL);
1485}
1486
Xiao Guangrong37860632012-11-15 14:17:01 +08001487static int __cmd_report(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001488{
1489 int rec_argc, i = 0, j;
1490 const char **rec_argv;
1491
1492 rec_argc = argc + 2;
1493 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1494 rec_argv[i++] = strdup("report");
1495 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001496 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001497 for (j = 1; j < argc; j++, i++)
1498 rec_argv[i] = argv[j];
1499
1500 BUG_ON(i != rec_argc);
1501
1502 return cmd_report(i, rec_argv, NULL);
1503}
1504
Xiao Guangrong37860632012-11-15 14:17:01 +08001505static int
1506__cmd_buildid_list(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001507{
1508 int rec_argc, i = 0, j;
1509 const char **rec_argv;
1510
1511 rec_argc = argc + 2;
1512 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1513 rec_argv[i++] = strdup("buildid-list");
1514 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001515 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001516 for (j = 1; j < argc; j++, i++)
1517 rec_argv[i] = argv[j];
1518
1519 BUG_ON(i != rec_argc);
1520
1521 return cmd_buildid_list(i, rec_argv, NULL);
1522}
1523
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001524int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001525{
Arnaldo Carvalho de Melo20914ce52012-12-19 10:59:29 -03001526 const char *file_name = NULL;
David Ahernde332ac2012-10-02 22:09:53 -06001527 const struct option kvm_options[] = {
Xiao Guangrong37860632012-11-15 14:17:01 +08001528 OPT_STRING('i', "input", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001529 "Input file name"),
Xiao Guangrong37860632012-11-15 14:17:01 +08001530 OPT_STRING('o', "output", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001531 "Output file name"),
1532 OPT_BOOLEAN(0, "guest", &perf_guest,
1533 "Collect guest os data"),
1534 OPT_BOOLEAN(0, "host", &perf_host,
1535 "Collect host os data"),
1536 OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory",
1537 "guest mount directory under which every guest os"
1538 " instance has a subdir"),
1539 OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name,
1540 "file", "file saving guest os vmlinux"),
1541 OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms,
1542 "file", "file saving guest os /proc/kallsyms"),
1543 OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
1544 "file", "file saving guest os /proc/modules"),
Dongsheng Yang100b9072013-12-09 12:15:11 -05001545 OPT_INCR('v', "verbose", &verbose,
1546 "be more verbose (show counter open errors, etc)"),
David Ahernde332ac2012-10-02 22:09:53 -06001547 OPT_END()
1548 };
1549
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001550 const char *const kvm_subcommands[] = { "top", "record", "report", "diff",
1551 "buildid-list", "stat", NULL };
1552 const char *kvm_usage[] = { NULL, NULL };
David Ahernde332ac2012-10-02 22:09:53 -06001553
Joerg Roedel1aed2672012-01-04 17:54:20 +01001554 perf_host = 0;
1555 perf_guest = 1;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001556
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001557 argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage,
1558 PARSE_OPT_STOP_AT_NON_OPTION);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001559 if (!argc)
1560 usage_with_options(kvm_usage, kvm_options);
1561
1562 if (!perf_host)
1563 perf_guest = 1;
1564
Xiao Guangrong37860632012-11-15 14:17:01 +08001565 if (!file_name) {
Dongsheng Yange1a2b172013-12-06 17:25:51 -05001566 file_name = get_filename_for_perf_kvm();
David Ahernde332ac2012-10-02 22:09:53 -06001567
Xiao Guangrong37860632012-11-15 14:17:01 +08001568 if (!file_name) {
David Ahernde332ac2012-10-02 22:09:53 -06001569 pr_err("Failed to allocate memory for filename\n");
1570 return -ENOMEM;
1571 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001572 }
1573
1574 if (!strncmp(argv[0], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001575 return __cmd_record(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001576 else if (!strncmp(argv[0], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001577 return __cmd_report(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001578 else if (!strncmp(argv[0], "diff", 4))
1579 return cmd_diff(argc, argv, NULL);
1580 else if (!strncmp(argv[0], "top", 3))
1581 return cmd_top(argc, argv, NULL);
1582 else if (!strncmp(argv[0], "buildid-list", 12))
Xiao Guangrong37860632012-11-15 14:17:01 +08001583 return __cmd_buildid_list(file_name, argc, argv);
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001584#ifdef HAVE_KVM_STAT_SUPPORT
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001585 else if (!strncmp(argv[0], "stat", 4))
Xiao Guangrong37860632012-11-15 14:17:01 +08001586 return kvm_cmd_stat(file_name, argc, argv);
Xiao Guangrong73210902012-11-19 16:19:21 +08001587#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001588 else
1589 usage_with_options(kvm_usage, kvm_options);
1590
1591 return 0;
1592}