blob: 43367eb005100ae939b8c6d372e5d6d0e6649e34 [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"
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"
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 Yarygin44b38022014-07-03 18:29:04 +040033#include <asm/kvm_perf.h>
Alexander Yarygin9daa8122014-07-03 18:29:05 +040034#include "util/kvm-stat.h"
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080035
Alexander Yarygin9daa8122014-07-03 18:29:05 +040036void exit_event_get_key(struct perf_evsel *evsel,
37 struct perf_sample *sample,
38 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080039{
40 key->info = 0;
Alexander Yarygin44b38022014-07-03 18:29:04 +040041 key->key = perf_evsel__intval(evsel, sample, KVM_EXIT_REASON);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080042}
43
Alexander Yarygin9daa8122014-07-03 18:29:05 +040044bool kvm_exit_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080045{
Alexander Yarygin44b38022014-07-03 18:29:04 +040046 return !strcmp(evsel->name, KVM_EXIT_TRACE);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080047}
48
Alexander Yarygin9daa8122014-07-03 18:29:05 +040049bool exit_event_begin(struct perf_evsel *evsel,
50 struct perf_sample *sample, struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080051{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030052 if (kvm_exit_event(evsel)) {
53 exit_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080054 return true;
55 }
56
57 return false;
58}
59
Alexander Yarygin9daa8122014-07-03 18:29:05 +040060bool kvm_entry_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080061{
Alexander Yarygin44b38022014-07-03 18:29:04 +040062 return !strcmp(evsel->name, KVM_ENTRY_TRACE);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080063}
64
Alexander Yarygin9daa8122014-07-03 18:29:05 +040065bool exit_event_end(struct perf_evsel *evsel,
66 struct perf_sample *sample __maybe_unused,
67 struct event_key *key __maybe_unused)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080068{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030069 return kvm_entry_event(evsel);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080070}
71
Alexander Yarygindf74c132014-07-03 17:59:50 +040072static const char *get_exit_reason(struct perf_kvm_stat *kvm,
73 struct exit_reasons_table *tbl,
74 u64 exit_code)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080075{
Alexander Yarygindf74c132014-07-03 17:59:50 +040076 while (tbl->reason != NULL) {
David Ahernde332ac2012-10-02 22:09:53 -060077 if (tbl->exit_code == exit_code)
78 return tbl->reason;
79 tbl++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080080 }
81
82 pr_err("unknown kvm exit code:%lld on %s\n",
David Ahernde332ac2012-10-02 22:09:53 -060083 (unsigned long long)exit_code, kvm->exit_reasons_isa);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080084 return "UNKNOWN";
85}
86
Alexander Yarygin9daa8122014-07-03 18:29:05 +040087void exit_event_decode_key(struct perf_kvm_stat *kvm,
88 struct event_key *key,
89 char *decode)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080090{
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +040091 const char *exit_reason = get_exit_reason(kvm, key->exit_reasons,
Alexander Yarygindf74c132014-07-03 17:59:50 +040092 key->key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080093
Alexander Yarygin44b38022014-07-03 18:29:04 +040094 scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080095}
96
Xiao Guangrong37860632012-11-15 14:17:01 +080097static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080098{
Alexander Yarygin9daa8122014-07-03 18:29:05 +040099 struct kvm_reg_events_ops *events_ops = kvm_reg_events_ops;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800100
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400101 for (events_ops = kvm_reg_events_ops; events_ops->name; events_ops++) {
102 if (!strcmp(events_ops->name, kvm->report_event)) {
103 kvm->events_ops = events_ops->ops;
104 return true;
105 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800106 }
107
Alexander Yarygin9daa8122014-07-03 18:29:05 +0400108 return false;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800109}
110
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800111struct vcpu_event_record {
112 int vcpu_id;
113 u64 start_time;
114 struct kvm_event *last_event;
115};
116
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800117
Xiao Guangrong37860632012-11-15 14:17:01 +0800118static void init_kvm_event_record(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800119{
David Ahernb880dee2012-10-08 11:17:30 -0600120 unsigned int i;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800121
David Ahernb880dee2012-10-08 11:17:30 -0600122 for (i = 0; i < EVENTS_CACHE_SIZE; i++)
David Ahernde332ac2012-10-02 22:09:53 -0600123 INIT_LIST_HEAD(&kvm->kvm_events_cache[i]);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800124}
125
David Ahern87419c92013-10-29 10:43:16 -0600126#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400127static void clear_events_cache_stats(struct list_head *kvm_events_cache)
128{
129 struct list_head *head;
130 struct kvm_event *event;
131 unsigned int i;
David Ahern62d04db2013-08-05 21:41:35 -0400132 int j;
David Ahern1afe1d12013-08-05 21:41:34 -0400133
134 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
135 head = &kvm_events_cache[i];
136 list_for_each_entry(event, head, hash_entry) {
137 /* reset stats for event */
David Ahern62d04db2013-08-05 21:41:35 -0400138 event->total.time = 0;
139 init_stats(&event->total.stats);
140
141 for (j = 0; j < event->max_vcpu; ++j) {
142 event->vcpu[j].time = 0;
143 init_stats(&event->vcpu[j].stats);
144 }
David Ahern1afe1d12013-08-05 21:41:34 -0400145 }
146 }
147}
David Ahern87419c92013-10-29 10:43:16 -0600148#endif
David Ahern1afe1d12013-08-05 21:41:34 -0400149
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800150static int kvm_events_hash_fn(u64 key)
151{
152 return key & (EVENTS_CACHE_SIZE - 1);
153}
154
155static bool kvm_event_expand(struct kvm_event *event, int vcpu_id)
156{
157 int old_max_vcpu = event->max_vcpu;
David Ahern6ca5f302013-05-25 18:24:46 -0600158 void *prev;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800159
160 if (vcpu_id < event->max_vcpu)
161 return true;
162
163 while (event->max_vcpu <= vcpu_id)
164 event->max_vcpu += DEFAULT_VCPU_NUM;
165
David Ahern6ca5f302013-05-25 18:24:46 -0600166 prev = event->vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800167 event->vcpu = realloc(event->vcpu,
168 event->max_vcpu * sizeof(*event->vcpu));
169 if (!event->vcpu) {
David Ahern6ca5f302013-05-25 18:24:46 -0600170 free(prev);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800171 pr_err("Not enough memory\n");
172 return false;
173 }
174
175 memset(event->vcpu + old_max_vcpu, 0,
176 (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu));
177 return true;
178}
179
180static struct kvm_event *kvm_alloc_init_event(struct event_key *key)
181{
182 struct kvm_event *event;
183
184 event = zalloc(sizeof(*event));
185 if (!event) {
186 pr_err("Not enough memory\n");
187 return NULL;
188 }
189
190 event->key = *key;
Alexander Yaryginacb61fc2014-04-09 16:21:59 +0200191 init_stats(&event->total.stats);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800192 return event;
193}
194
Xiao Guangrong37860632012-11-15 14:17:01 +0800195static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600196 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800197{
198 struct kvm_event *event;
199 struct list_head *head;
200
201 BUG_ON(key->key == INVALID_KEY);
202
David Ahernde332ac2012-10-02 22:09:53 -0600203 head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)];
David Ahern355afe82012-10-08 11:17:32 -0600204 list_for_each_entry(event, head, hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800205 if (event->key.key == key->key && event->key.info == key->info)
206 return event;
David Ahern355afe82012-10-08 11:17:32 -0600207 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800208
209 event = kvm_alloc_init_event(key);
210 if (!event)
211 return NULL;
212
213 list_add(&event->hash_entry, head);
214 return event;
215}
216
Xiao Guangrong37860632012-11-15 14:17:01 +0800217static bool handle_begin_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600218 struct vcpu_event_record *vcpu_record,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800219 struct event_key *key, u64 timestamp)
220{
221 struct kvm_event *event = NULL;
222
223 if (key->key != INVALID_KEY)
David Ahernde332ac2012-10-02 22:09:53 -0600224 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800225
226 vcpu_record->last_event = event;
227 vcpu_record->start_time = timestamp;
228 return true;
229}
230
231static void
232kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff)
233{
234 kvm_stats->time += time_diff;
235 update_stats(&kvm_stats->stats, time_diff);
236}
237
238static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event)
239{
240 struct kvm_event_stats *kvm_stats = &event->total;
241
242 if (vcpu_id != -1)
243 kvm_stats = &event->vcpu[vcpu_id];
244
245 return rel_stddev_stats(stddev_stats(&kvm_stats->stats),
246 avg_stats(&kvm_stats->stats));
247}
248
249static bool update_kvm_event(struct kvm_event *event, int vcpu_id,
250 u64 time_diff)
251{
David Ahern2aa8eab2012-10-08 11:17:35 -0600252 if (vcpu_id == -1) {
253 kvm_update_event_stats(&event->total, time_diff);
254 return true;
255 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800256
257 if (!kvm_event_expand(event, vcpu_id))
258 return false;
259
260 kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff);
261 return true;
262}
263
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +0400264static bool is_child_event(struct perf_kvm_stat *kvm,
265 struct perf_evsel *evsel,
266 struct perf_sample *sample,
267 struct event_key *key)
268{
269 struct child_event_ops *child_ops;
270
271 child_ops = kvm->events_ops->child_ops;
272
273 if (!child_ops)
274 return false;
275
276 for (; child_ops->name; child_ops++) {
277 if (!strcmp(evsel->name, child_ops->name)) {
278 child_ops->get_key(evsel, sample, key);
279 return true;
280 }
281 }
282
283 return false;
284}
285
286static bool handle_child_event(struct perf_kvm_stat *kvm,
287 struct vcpu_event_record *vcpu_record,
288 struct event_key *key,
289 struct perf_sample *sample __maybe_unused)
290{
291 struct kvm_event *event = NULL;
292
293 if (key->key != INVALID_KEY)
294 event = find_create_kvm_event(kvm, key);
295
296 vcpu_record->last_event = event;
297
298 return true;
299}
300
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400301static bool skip_event(const char *event)
302{
303 const char * const *skip_events;
304
305 for (skip_events = kvm_skip_events; *skip_events; skip_events++)
306 if (!strcmp(event, *skip_events))
307 return true;
308
309 return false;
310}
311
Xiao Guangrong37860632012-11-15 14:17:01 +0800312static bool handle_end_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600313 struct vcpu_event_record *vcpu_record,
314 struct event_key *key,
David Ahern70f7b4a2013-08-07 21:56:38 -0400315 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800316{
317 struct kvm_event *event;
318 u64 time_begin, time_diff;
David Ahern2aa8eab2012-10-08 11:17:35 -0600319 int vcpu;
320
321 if (kvm->trace_vcpu == -1)
322 vcpu = -1;
323 else
324 vcpu = vcpu_record->vcpu_id;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800325
326 event = vcpu_record->last_event;
327 time_begin = vcpu_record->start_time;
328
329 /* The begin event is not caught. */
330 if (!time_begin)
331 return true;
332
333 /*
334 * In some case, the 'begin event' only records the start timestamp,
335 * the actual event is recognized in the 'end event' (e.g. mmio-event).
336 */
337
338 /* Both begin and end events did not get the key. */
339 if (!event && key->key == INVALID_KEY)
340 return true;
341
342 if (!event)
David Ahernde332ac2012-10-02 22:09:53 -0600343 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800344
345 if (!event)
346 return false;
347
348 vcpu_record->last_event = NULL;
349 vcpu_record->start_time = 0;
350
David Ahern1afe1d12013-08-05 21:41:34 -0400351 /* seems to happen once in a while during live mode */
David Ahern70f7b4a2013-08-07 21:56:38 -0400352 if (sample->time < time_begin) {
David Ahern1afe1d12013-08-05 21:41:34 -0400353 pr_debug("End time before begin time; skipping event.\n");
354 return true;
355 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800356
David Ahern70f7b4a2013-08-07 21:56:38 -0400357 time_diff = sample->time - time_begin;
358
359 if (kvm->duration && time_diff > kvm->duration) {
Alexander Yarygin44b38022014-07-03 18:29:04 +0400360 char decode[DECODE_STR_LEN];
David Ahern70f7b4a2013-08-07 21:56:38 -0400361
362 kvm->events_ops->decode_key(kvm, &event->key, decode);
Alexander Yarygin54c801f2014-07-03 18:29:06 +0400363 if (!skip_event(decode)) {
David Ahern70f7b4a2013-08-07 21:56:38 -0400364 pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n",
365 sample->time, sample->pid, vcpu_record->vcpu_id,
366 decode, time_diff/1000);
367 }
368 }
369
David Ahern2aa8eab2012-10-08 11:17:35 -0600370 return update_kvm_event(event, vcpu, time_diff);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800371}
372
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300373static
374struct vcpu_event_record *per_vcpu_record(struct thread *thread,
375 struct perf_evsel *evsel,
376 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800377{
378 /* Only kvm_entry records vcpu id. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300379 if (!thread->priv && kvm_entry_event(evsel)) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800380 struct vcpu_event_record *vcpu_record;
381
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300382 vcpu_record = zalloc(sizeof(*vcpu_record));
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800383 if (!vcpu_record) {
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300384 pr_err("%s: Not enough memory\n", __func__);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800385 return NULL;
386 }
387
Alexander Yarygin44b38022014-07-03 18:29:04 +0400388 vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, VCPU_ID);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800389 thread->priv = vcpu_record;
390 }
391
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300392 return thread->priv;
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
David Ahern1afe1d12013-08-05 21:41:34 -0400546 if (kvm->live) {
547 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, ");
553 }
554
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800555 if (vcpu == -1)
556 pr_info("all VCPUs:\n\n");
557 else
558 pr_info("VCPU %d:\n\n", vcpu);
559}
560
David Ahern1afe1d12013-08-05 21:41:34 -0400561static void show_timeofday(void)
562{
563 char date[64];
564 struct timeval tv;
565 struct tm ltime;
566
567 gettimeofday(&tv, NULL);
568 if (localtime_r(&tv.tv_sec, &ltime)) {
569 strftime(date, sizeof(date), "%H:%M:%S", &ltime);
570 pr_info("%s.%06ld", date, tv.tv_usec);
571 } else
572 pr_info("00:00:00.000000");
573
574 return;
575}
576
Xiao Guangrong37860632012-11-15 14:17:01 +0800577static void print_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800578{
Alexander Yarygin44b38022014-07-03 18:29:04 +0400579 char decode[DECODE_STR_LEN];
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800580 struct kvm_event *event;
David Ahernde332ac2012-10-02 22:09:53 -0600581 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800582
David Ahern1afe1d12013-08-05 21:41:34 -0400583 if (kvm->live) {
584 puts(CONSOLE_CLEAR);
585 show_timeofday();
586 }
587
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800588 pr_info("\n\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400589 print_vcpu_info(kvm);
Alexander Yarygin44b38022014-07-03 18:29:04 +0400590 pr_info("%*s ", DECODE_STR_LEN, kvm->events_ops->name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800591 pr_info("%10s ", "Samples");
592 pr_info("%9s ", "Samples%");
593
594 pr_info("%9s ", "Time%");
David Ahern62d04db2013-08-05 21:41:35 -0400595 pr_info("%10s ", "Min Time");
596 pr_info("%10s ", "Max Time");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800597 pr_info("%16s ", "Avg time");
598 pr_info("\n\n");
599
David Ahernde332ac2012-10-02 22:09:53 -0600600 while ((event = pop_from_result(&kvm->result))) {
David Ahern62d04db2013-08-05 21:41:35 -0400601 u64 ecount, etime, max, min;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800602
603 ecount = get_event_count(event, vcpu);
604 etime = get_event_time(event, vcpu);
David Ahern62d04db2013-08-05 21:41:35 -0400605 max = get_event_max(event, vcpu);
606 min = get_event_min(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800607
David Ahernde332ac2012-10-02 22:09:53 -0600608 kvm->events_ops->decode_key(kvm, &event->key, decode);
Alexander Yarygin44b38022014-07-03 18:29:04 +0400609 pr_info("%*s ", DECODE_STR_LEN, decode);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800610 pr_info("%10llu ", (unsigned long long)ecount);
David Ahernde332ac2012-10-02 22:09:53 -0600611 pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100);
612 pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100);
David Ahern62d04db2013-08-05 21:41:35 -0400613 pr_info("%8" PRIu64 "us ", min / 1000);
614 pr_info("%8" PRIu64 "us ", max / 1000);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800615 pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,
616 kvm_event_rel_stddev(vcpu, event));
617 pr_info("\n");
618 }
619
David Aherne4f76372012-10-08 11:17:34 -0600620 pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n",
621 kvm->total_count, kvm->total_time / 1e3);
David Ahern1afe1d12013-08-05 21:41:34 -0400622
623 if (kvm->lost_events)
624 pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
625}
626
David Ahern87419c92013-10-29 10:43:16 -0600627#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400628static int process_lost_event(struct perf_tool *tool,
629 union perf_event *event __maybe_unused,
630 struct perf_sample *sample __maybe_unused,
631 struct machine *machine __maybe_unused)
632{
633 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool);
634
635 kvm->lost_events++;
636 return 0;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800637}
David Ahern87419c92013-10-29 10:43:16 -0600638#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800639
David Ahern2e73f002013-08-05 21:41:37 -0400640static bool skip_sample(struct perf_kvm_stat *kvm,
641 struct perf_sample *sample)
642{
643 if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL)
644 return true;
645
646 return false;
647}
648
David Ahernde332ac2012-10-02 22:09:53 -0600649static int process_sample_event(struct perf_tool *tool,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800650 union perf_event *event,
651 struct perf_sample *sample,
652 struct perf_evsel *evsel,
653 struct machine *machine)
654{
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))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800670 return -1;
671
672 return 0;
673}
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
735 err = perf_session_queue_event(kvm->session, event, &sample, 0);
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800736 /*
737 * FIXME: Here we can't consume the event, as perf_session_queue_event will
738 * 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) {
788 kvm->session->ordered_samples.next_flush = flush_time;
789 err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session);
790 if (err) {
791 if (kvm->lost_events)
792 pr_info("\nLost events: %" PRIu64 "\n\n",
793 kvm->lost_events);
794 return err;
795 }
796 }
797
798 return throttled;
799}
800
801static volatile int done;
802
803static void sig_handler(int sig __maybe_unused)
804{
805 done = 1;
806}
807
808static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm)
809{
810 struct itimerspec new_value;
811 int rc = -1;
812
813 kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
814 if (kvm->timerfd < 0) {
815 pr_err("timerfd_create failed\n");
816 goto out;
817 }
818
819 new_value.it_value.tv_sec = kvm->display_time;
820 new_value.it_value.tv_nsec = 0;
821 new_value.it_interval.tv_sec = kvm->display_time;
822 new_value.it_interval.tv_nsec = 0;
823
824 if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) {
825 pr_err("timerfd_settime failed: %d\n", errno);
826 close(kvm->timerfd);
827 goto out;
828 }
829
830 rc = 0;
831out:
832 return rc;
833}
834
835static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm)
836{
837 uint64_t c;
838 int rc;
839
840 rc = read(kvm->timerfd, &c, sizeof(uint64_t));
841 if (rc < 0) {
842 if (errno == EAGAIN)
843 return 0;
844
845 pr_err("Failed to read timer fd: %d\n", errno);
846 return -1;
847 }
848
849 if (rc != sizeof(uint64_t)) {
850 pr_err("Error reading timer fd - invalid size returned\n");
851 return -1;
852 }
853
854 if (c != 1)
855 pr_debug("Missed timer beats: %" PRIu64 "\n", c-1);
856
857 /* update display */
858 sort_result(kvm);
859 print_result(kvm);
860
861 /* reset counts */
862 clear_events_cache_stats(kvm->kvm_events_cache);
863 kvm->total_count = 0;
864 kvm->total_time = 0;
865 kvm->lost_events = 0;
866
867 return 0;
868}
869
870static int fd_set_nonblock(int fd)
871{
872 long arg = 0;
873
874 arg = fcntl(fd, F_GETFL);
875 if (arg < 0) {
876 pr_err("Failed to get current flags for fd %d\n", fd);
877 return -1;
878 }
879
880 if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) {
881 pr_err("Failed to set non-block option on fd %d\n", fd);
882 return -1;
883 }
884
885 return 0;
886}
887
888static
889int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save)
890{
891 int c;
892
893 tcsetattr(0, TCSANOW, tc_now);
894 c = getc(stdin);
895 tcsetattr(0, TCSAFLUSH, tc_save);
896
897 if (c == 'q')
898 return 1;
899
900 return 0;
901}
902
903static int kvm_events_live_report(struct perf_kvm_stat *kvm)
904{
905 struct pollfd *pollfds = NULL;
906 int nr_fds, nr_stdin, ret, err = -EINVAL;
907 struct termios tc, save;
908
909 /* live flag must be set first */
910 kvm->live = true;
911
912 ret = cpu_isa_config(kvm);
913 if (ret < 0)
914 return ret;
915
916 if (!verify_vcpu(kvm->trace_vcpu) ||
917 !select_key(kvm) ||
918 !register_kvm_events_ops(kvm)) {
919 goto out;
920 }
921
922 init_kvm_event_record(kvm);
923
924 tcgetattr(0, &save);
925 tc = save;
926 tc.c_lflag &= ~(ICANON | ECHO);
927 tc.c_cc[VMIN] = 0;
928 tc.c_cc[VTIME] = 0;
929
930 signal(SIGINT, sig_handler);
931 signal(SIGTERM, sig_handler);
932
933 /* copy pollfds -- need to add timerfd and stdin */
934 nr_fds = kvm->evlist->nr_fds;
935 pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2));
936 if (!pollfds) {
937 err = -ENOMEM;
938 goto out;
939 }
940 memcpy(pollfds, kvm->evlist->pollfd,
941 sizeof(struct pollfd) * kvm->evlist->nr_fds);
942
943 /* add timer fd */
944 if (perf_kvm__timerfd_create(kvm) < 0) {
945 err = -1;
946 goto out;
947 }
948
949 pollfds[nr_fds].fd = kvm->timerfd;
950 pollfds[nr_fds].events = POLLIN;
951 nr_fds++;
952
953 pollfds[nr_fds].fd = fileno(stdin);
954 pollfds[nr_fds].events = POLLIN;
955 nr_stdin = nr_fds;
956 nr_fds++;
957 if (fd_set_nonblock(fileno(stdin)) != 0)
958 goto out;
959
960 /* everything is good - enable the events and process */
961 perf_evlist__enable(kvm->evlist);
962
963 while (!done) {
964 int rc;
965
966 rc = perf_kvm__mmap_read(kvm);
967 if (rc < 0)
968 break;
969
970 err = perf_kvm__handle_timerfd(kvm);
971 if (err)
972 goto out;
973
974 if (pollfds[nr_stdin].revents & POLLIN)
975 done = perf_kvm__handle_stdin(&tc, &save);
976
977 if (!rc && !done)
978 err = poll(pollfds, nr_fds, 100);
979 }
980
981 perf_evlist__disable(kvm->evlist);
982
983 if (err == 0) {
984 sort_result(kvm);
985 print_result(kvm);
986 }
987
988out:
989 if (kvm->timerfd >= 0)
990 close(kvm->timerfd);
991
Arnaldo Carvalho de Melof5385652013-12-26 15:54:57 -0300992 free(pollfds);
David Ahern1afe1d12013-08-05 21:41:34 -0400993 return err;
994}
995
996static int kvm_live_open_events(struct perf_kvm_stat *kvm)
997{
998 int err, rc = -1;
999 struct perf_evsel *pos;
1000 struct perf_evlist *evlist = kvm->evlist;
1001
1002 perf_evlist__config(evlist, &kvm->opts);
1003
1004 /*
1005 * Note: exclude_{guest,host} do not apply here.
1006 * This command processes KVM tracepoints from host only
1007 */
Arnaldo Carvalho de Melo0050f7a2014-01-10 10:37:27 -03001008 evlist__for_each(evlist, pos) {
David Ahern1afe1d12013-08-05 21:41:34 -04001009 struct perf_event_attr *attr = &pos->attr;
1010
1011 /* make sure these *are* set */
Adrian Huntere71aa282013-09-06 22:40:12 +03001012 perf_evsel__set_sample_bit(pos, TID);
1013 perf_evsel__set_sample_bit(pos, TIME);
1014 perf_evsel__set_sample_bit(pos, CPU);
1015 perf_evsel__set_sample_bit(pos, RAW);
David Ahern1afe1d12013-08-05 21:41:34 -04001016 /* make sure these are *not*; want as small a sample as possible */
Adrian Huntere71aa282013-09-06 22:40:12 +03001017 perf_evsel__reset_sample_bit(pos, PERIOD);
1018 perf_evsel__reset_sample_bit(pos, IP);
1019 perf_evsel__reset_sample_bit(pos, CALLCHAIN);
1020 perf_evsel__reset_sample_bit(pos, ADDR);
1021 perf_evsel__reset_sample_bit(pos, READ);
David Ahern1afe1d12013-08-05 21:41:34 -04001022 attr->mmap = 0;
1023 attr->comm = 0;
1024 attr->task = 0;
1025
1026 attr->sample_period = 1;
1027
1028 attr->watermark = 0;
1029 attr->wakeup_events = 1000;
1030
1031 /* will enable all once we are ready */
1032 attr->disabled = 1;
1033 }
1034
1035 err = perf_evlist__open(evlist);
1036 if (err < 0) {
1037 printf("Couldn't create the events: %s\n", strerror(errno));
1038 goto out;
1039 }
1040
1041 if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) {
1042 ui__error("Failed to mmap the events: %s\n", strerror(errno));
1043 perf_evlist__close(evlist);
1044 goto out;
1045 }
1046
1047 rc = 0;
1048
1049out:
1050 return rc;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001051}
David Ahern87419c92013-10-29 10:43:16 -06001052#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001053
Xiao Guangrong37860632012-11-15 14:17:01 +08001054static int read_events(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001055{
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001056 int ret;
1057
David Ahernde332ac2012-10-02 22:09:53 -06001058 struct perf_tool eops = {
1059 .sample = process_sample_event,
1060 .comm = perf_event__process_comm,
1061 .ordered_samples = true,
1062 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001063 struct perf_data_file file = {
Dongsheng Yang476b3a82013-12-09 18:47:03 -05001064 .path = kvm->file_name,
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001065 .mode = PERF_DATA_MODE_READ,
1066 };
David Ahernde332ac2012-10-02 22:09:53 -06001067
1068 kvm->tool = eops;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001069 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahernde332ac2012-10-02 22:09:53 -06001070 if (!kvm->session) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001071 pr_err("Initializing perf session failed\n");
1072 return -EINVAL;
1073 }
1074
David Ahernde332ac2012-10-02 22:09:53 -06001075 if (!perf_session__has_traces(kvm->session, "kvm record"))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001076 return -EINVAL;
1077
1078 /*
1079 * Do not use 'isa' recorded in kvm_exit tracepoint since it is not
1080 * traced in the old kernel.
1081 */
David Ahern1afe1d12013-08-05 21:41:34 -04001082 ret = cpu_isa_config(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001083 if (ret < 0)
1084 return ret;
1085
David Ahernde332ac2012-10-02 22:09:53 -06001086 return perf_session__process_events(kvm->session, &kvm->tool);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001087}
1088
David Ahern2e73f002013-08-05 21:41:37 -04001089static int parse_target_str(struct perf_kvm_stat *kvm)
1090{
1091 if (kvm->pid_str) {
1092 kvm->pid_list = intlist__new(kvm->pid_str);
1093 if (kvm->pid_list == NULL) {
1094 pr_err("Error parsing process id string\n");
1095 return -EINVAL;
1096 }
1097 }
1098
1099 return 0;
1100}
1101
Xiao Guangrong37860632012-11-15 14:17:01 +08001102static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001103{
1104 int ret = -EINVAL;
David Ahernde332ac2012-10-02 22:09:53 -06001105 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001106
David Ahern2e73f002013-08-05 21:41:37 -04001107 if (parse_target_str(kvm) != 0)
1108 goto exit;
1109
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001110 if (!verify_vcpu(vcpu))
1111 goto exit;
1112
David Ahernde332ac2012-10-02 22:09:53 -06001113 if (!select_key(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001114 goto exit;
1115
David Ahernde332ac2012-10-02 22:09:53 -06001116 if (!register_kvm_events_ops(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001117 goto exit;
1118
David Ahernde332ac2012-10-02 22:09:53 -06001119 init_kvm_event_record(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001120 setup_pager();
1121
David Ahernde332ac2012-10-02 22:09:53 -06001122 ret = read_events(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001123 if (ret)
1124 goto exit;
1125
David Ahernde332ac2012-10-02 22:09:53 -06001126 sort_result(kvm);
1127 print_result(kvm);
1128
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001129exit:
1130 return ret;
1131}
1132
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001133#define STRDUP_FAIL_EXIT(s) \
1134 ({ char *_p; \
1135 _p = strdup(s); \
1136 if (!_p) \
1137 return -ENOMEM; \
1138 _p; \
1139 })
1140
Xiao Guangrong37860632012-11-15 14:17:01 +08001141static int
1142kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001143{
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001144 unsigned int rec_argc, i, j, events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001145 const char **rec_argv;
David Ahern8fdd84c2013-08-02 14:05:42 -06001146 const char * const record_args[] = {
1147 "record",
1148 "-R",
David Ahern8fdd84c2013-08-02 14:05:42 -06001149 "-m", "1024",
1150 "-c", "1",
1151 };
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001152 const char * const *events_tp;
1153 events_tp_size = 0;
1154
1155 for (events_tp = kvm_events_tp; *events_tp; events_tp++)
1156 events_tp_size++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001157
David Ahern8fdd84c2013-08-02 14:05:42 -06001158 rec_argc = ARRAY_SIZE(record_args) + argc + 2 +
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001159 2 * events_tp_size;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001160 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1161
1162 if (rec_argv == NULL)
1163 return -ENOMEM;
1164
1165 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1166 rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]);
1167
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001168 for (j = 0; j < events_tp_size; j++) {
David Ahern8fdd84c2013-08-02 14:05:42 -06001169 rec_argv[i++] = "-e";
1170 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]);
1171 }
1172
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001173 rec_argv[i++] = STRDUP_FAIL_EXIT("-o");
David Ahernde332ac2012-10-02 22:09:53 -06001174 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001175
1176 for (j = 1; j < (unsigned int)argc; j++, i++)
1177 rec_argv[i] = argv[j];
1178
1179 return cmd_record(i, rec_argv, NULL);
1180}
1181
Xiao Guangrong37860632012-11-15 14:17:01 +08001182static int
1183kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001184{
David Ahernde332ac2012-10-02 22:09:53 -06001185 const struct option kvm_events_report_options[] = {
1186 OPT_STRING(0, "event", &kvm->report_event, "report event",
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001187 "event for reporting: vmexit, "
1188 "mmio (x86 only), ioport (x86 only)"),
David Ahernde332ac2012-10-02 22:09:53 -06001189 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1190 "vcpu id to report"),
1191 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1192 "key for sorting: sample(sort by samples number)"
1193 " time (sort by avg time)"),
David Ahern2e73f002013-08-05 21:41:37 -04001194 OPT_STRING('p', "pid", &kvm->pid_str, "pid",
1195 "analyze events only for given process id(s)"),
David Ahernde332ac2012-10-02 22:09:53 -06001196 OPT_END()
1197 };
1198
1199 const char * const kvm_events_report_usage[] = {
1200 "perf kvm stat report [<options>]",
1201 NULL
1202 };
1203
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001204 symbol__init();
1205
1206 if (argc) {
1207 argc = parse_options(argc, argv,
1208 kvm_events_report_options,
1209 kvm_events_report_usage, 0);
1210 if (argc)
1211 usage_with_options(kvm_events_report_usage,
1212 kvm_events_report_options);
1213 }
1214
David Ahernde332ac2012-10-02 22:09:53 -06001215 return kvm_events_report_vcpu(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001216}
1217
David Ahern87419c92013-10-29 10:43:16 -06001218#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001219static struct perf_evlist *kvm_live_event_list(void)
1220{
1221 struct perf_evlist *evlist;
1222 char *tp, *name, *sys;
David Ahern1afe1d12013-08-05 21:41:34 -04001223 int err = -1;
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001224 const char * const *events_tp;
David Ahern1afe1d12013-08-05 21:41:34 -04001225
1226 evlist = perf_evlist__new();
1227 if (evlist == NULL)
1228 return NULL;
1229
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001230 for (events_tp = kvm_events_tp; *events_tp; events_tp++) {
David Ahern1afe1d12013-08-05 21:41:34 -04001231
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001232 tp = strdup(*events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001233 if (tp == NULL)
1234 goto out;
1235
1236 /* split tracepoint into subsystem and name */
1237 sys = tp;
1238 name = strchr(tp, ':');
1239 if (name == NULL) {
1240 pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n",
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001241 *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001242 free(tp);
1243 goto out;
1244 }
1245 *name = '\0';
1246 name++;
1247
1248 if (perf_evlist__add_newtp(evlist, sys, name, NULL)) {
Alexander Yarygin9daa8122014-07-03 18:29:05 +04001249 pr_err("Failed to add %s tracepoint to the list\n", *events_tp);
David Ahern1afe1d12013-08-05 21:41:34 -04001250 free(tp);
1251 goto out;
1252 }
1253
1254 free(tp);
1255 }
1256
1257 err = 0;
1258
1259out:
1260 if (err) {
1261 perf_evlist__delete(evlist);
1262 evlist = NULL;
1263 }
1264
1265 return evlist;
1266}
1267
1268static int kvm_events_live(struct perf_kvm_stat *kvm,
1269 int argc, const char **argv)
1270{
1271 char errbuf[BUFSIZ];
1272 int err;
1273
1274 const struct option live_options[] = {
1275 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
1276 "record events on existing process id"),
Jiri Olsa994a1f72013-09-01 12:36:12 +02001277 OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages",
1278 "number of mmap data pages",
1279 perf_evlist__parse_mmap_pages),
David Ahern1afe1d12013-08-05 21:41:34 -04001280 OPT_INCR('v', "verbose", &verbose,
1281 "be more verbose (show counter open errors, etc)"),
1282 OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide,
1283 "system-wide collection from all CPUs"),
1284 OPT_UINTEGER('d', "display", &kvm->display_time,
1285 "time in seconds between display updates"),
1286 OPT_STRING(0, "event", &kvm->report_event, "report event",
1287 "event for reporting: vmexit, mmio, ioport"),
1288 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1289 "vcpu id to report"),
1290 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1291 "key for sorting: sample(sort by samples number)"
1292 " time (sort by avg time)"),
David Ahern70f7b4a2013-08-07 21:56:38 -04001293 OPT_U64(0, "duration", &kvm->duration,
Alexander Yarygin3be8e2a2014-07-03 18:29:07 +04001294 "show events other than"
1295 " HLT (x86 only) or Wait state (s390 only)"
1296 " that take longer than duration usecs"),
David Ahern1afe1d12013-08-05 21:41:34 -04001297 OPT_END()
1298 };
1299 const char * const live_usage[] = {
1300 "perf kvm stat live [<options>]",
1301 NULL
1302 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001303 struct perf_data_file file = {
1304 .mode = PERF_DATA_MODE_WRITE,
1305 };
David Ahern1afe1d12013-08-05 21:41:34 -04001306
1307
1308 /* event handling */
1309 kvm->tool.sample = process_sample_event;
1310 kvm->tool.comm = perf_event__process_comm;
1311 kvm->tool.exit = perf_event__process_exit;
1312 kvm->tool.fork = perf_event__process_fork;
1313 kvm->tool.lost = process_lost_event;
1314 kvm->tool.ordered_samples = true;
1315 perf_tool__fill_defaults(&kvm->tool);
1316
1317 /* set defaults */
1318 kvm->display_time = 1;
1319 kvm->opts.user_interval = 1;
1320 kvm->opts.mmap_pages = 512;
1321 kvm->opts.target.uses_mmap = false;
1322 kvm->opts.target.uid_str = NULL;
1323 kvm->opts.target.uid = UINT_MAX;
1324
1325 symbol__init();
1326 disable_buildid_cache();
1327
1328 use_browser = 0;
1329 setup_browser(false);
1330
1331 if (argc) {
1332 argc = parse_options(argc, argv, live_options,
1333 live_usage, 0);
1334 if (argc)
1335 usage_with_options(live_usage, live_options);
1336 }
1337
David Ahern70f7b4a2013-08-07 21:56:38 -04001338 kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */
1339
David Ahern1afe1d12013-08-05 21:41:34 -04001340 /*
1341 * target related setups
1342 */
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001343 err = target__validate(&kvm->opts.target);
David Ahern1afe1d12013-08-05 21:41:34 -04001344 if (err) {
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001345 target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ);
David Ahern1afe1d12013-08-05 21:41:34 -04001346 ui__warning("%s", errbuf);
1347 }
1348
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001349 if (target__none(&kvm->opts.target))
David Ahern1afe1d12013-08-05 21:41:34 -04001350 kvm->opts.target.system_wide = true;
1351
1352
1353 /*
1354 * generate the event list
1355 */
1356 kvm->evlist = kvm_live_event_list();
1357 if (kvm->evlist == NULL) {
1358 err = -1;
1359 goto out;
1360 }
1361
1362 symbol_conf.nr_events = kvm->evlist->nr_entries;
1363
1364 if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0)
1365 usage_with_options(live_usage, live_options);
1366
1367 /*
1368 * perf session
1369 */
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001370 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahern1afe1d12013-08-05 21:41:34 -04001371 if (kvm->session == NULL) {
1372 err = -ENOMEM;
1373 goto out;
1374 }
1375 kvm->session->evlist = kvm->evlist;
1376 perf_session__set_id_hdr_size(kvm->session);
Arnaldo Carvalho de Meloa33fbd52013-11-11 11:36:12 -03001377 machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
1378 kvm->evlist->threads, false);
David Ahern1afe1d12013-08-05 21:41:34 -04001379 err = kvm_live_open_events(kvm);
1380 if (err)
1381 goto out;
1382
1383 err = kvm_events_live_report(kvm);
1384
1385out:
1386 exit_browser(0);
1387
1388 if (kvm->session)
1389 perf_session__delete(kvm->session);
1390 kvm->session = NULL;
Arnaldo Carvalho de Melo03ad9742014-01-03 15:56:06 -03001391 if (kvm->evlist)
David Ahern1afe1d12013-08-05 21:41:34 -04001392 perf_evlist__delete(kvm->evlist);
David Ahern1afe1d12013-08-05 21:41:34 -04001393
1394 return err;
1395}
David Ahern87419c92013-10-29 10:43:16 -06001396#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001397
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001398static void print_kvm_stat_usage(void)
1399{
1400 printf("Usage: perf kvm stat <command>\n\n");
1401
1402 printf("# Available commands:\n");
1403 printf("\trecord: record kvm events\n");
1404 printf("\treport: report statistical data of kvm events\n");
David Ahern1afe1d12013-08-05 21:41:34 -04001405 printf("\tlive: live reporting of statistical data of kvm events\n");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001406
1407 printf("\nOtherwise, it is the alias of 'perf stat':\n");
1408}
1409
Xiao Guangrong37860632012-11-15 14:17:01 +08001410static int kvm_cmd_stat(const char *file_name, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001411{
Xiao Guangrong37860632012-11-15 14:17:01 +08001412 struct perf_kvm_stat kvm = {
1413 .file_name = file_name,
1414
1415 .trace_vcpu = -1,
1416 .report_event = "vmexit",
1417 .sort_key = "sample",
1418
Xiao Guangrong37860632012-11-15 14:17:01 +08001419 };
1420
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001421 if (argc == 1) {
1422 print_kvm_stat_usage();
1423 goto perf_stat;
1424 }
1425
1426 if (!strncmp(argv[1], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001427 return kvm_events_record(&kvm, argc - 1, argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001428
1429 if (!strncmp(argv[1], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001430 return kvm_events_report(&kvm, argc - 1 , argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001431
David Ahern87419c92013-10-29 10:43:16 -06001432#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001433 if (!strncmp(argv[1], "live", 4))
1434 return kvm_events_live(&kvm, argc - 1 , argv + 1);
David Ahern87419c92013-10-29 10:43:16 -06001435#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001436
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001437perf_stat:
1438 return cmd_stat(argc, argv, NULL);
1439}
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001440#endif /* HAVE_KVM_STAT_SUPPORT */
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001441
Xiao Guangrong37860632012-11-15 14:17:01 +08001442static int __cmd_record(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001443{
1444 int rec_argc, i = 0, j;
1445 const char **rec_argv;
1446
1447 rec_argc = argc + 2;
1448 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1449 rec_argv[i++] = strdup("record");
1450 rec_argv[i++] = strdup("-o");
Xiao Guangrong37860632012-11-15 14:17:01 +08001451 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001452 for (j = 1; j < argc; j++, i++)
1453 rec_argv[i] = argv[j];
1454
1455 BUG_ON(i != rec_argc);
1456
1457 return cmd_record(i, rec_argv, NULL);
1458}
1459
Xiao Guangrong37860632012-11-15 14:17:01 +08001460static int __cmd_report(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001461{
1462 int rec_argc, i = 0, j;
1463 const char **rec_argv;
1464
1465 rec_argc = argc + 2;
1466 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1467 rec_argv[i++] = strdup("report");
1468 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001469 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001470 for (j = 1; j < argc; j++, i++)
1471 rec_argv[i] = argv[j];
1472
1473 BUG_ON(i != rec_argc);
1474
1475 return cmd_report(i, rec_argv, NULL);
1476}
1477
Xiao Guangrong37860632012-11-15 14:17:01 +08001478static int
1479__cmd_buildid_list(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001480{
1481 int rec_argc, i = 0, j;
1482 const char **rec_argv;
1483
1484 rec_argc = argc + 2;
1485 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1486 rec_argv[i++] = strdup("buildid-list");
1487 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001488 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001489 for (j = 1; j < argc; j++, i++)
1490 rec_argv[i] = argv[j];
1491
1492 BUG_ON(i != rec_argc);
1493
1494 return cmd_buildid_list(i, rec_argv, NULL);
1495}
1496
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001497int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001498{
Arnaldo Carvalho de Melo20914ce52012-12-19 10:59:29 -03001499 const char *file_name = NULL;
David Ahernde332ac2012-10-02 22:09:53 -06001500 const struct option kvm_options[] = {
Xiao Guangrong37860632012-11-15 14:17:01 +08001501 OPT_STRING('i', "input", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001502 "Input file name"),
Xiao Guangrong37860632012-11-15 14:17:01 +08001503 OPT_STRING('o', "output", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001504 "Output file name"),
1505 OPT_BOOLEAN(0, "guest", &perf_guest,
1506 "Collect guest os data"),
1507 OPT_BOOLEAN(0, "host", &perf_host,
1508 "Collect host os data"),
1509 OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory",
1510 "guest mount directory under which every guest os"
1511 " instance has a subdir"),
1512 OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name,
1513 "file", "file saving guest os vmlinux"),
1514 OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms,
1515 "file", "file saving guest os /proc/kallsyms"),
1516 OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
1517 "file", "file saving guest os /proc/modules"),
Dongsheng Yang100b9072013-12-09 12:15:11 -05001518 OPT_INCR('v', "verbose", &verbose,
1519 "be more verbose (show counter open errors, etc)"),
David Ahernde332ac2012-10-02 22:09:53 -06001520 OPT_END()
1521 };
1522
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001523 const char *const kvm_subcommands[] = { "top", "record", "report", "diff",
1524 "buildid-list", "stat", NULL };
1525 const char *kvm_usage[] = { NULL, NULL };
David Ahernde332ac2012-10-02 22:09:53 -06001526
Joerg Roedel1aed2672012-01-04 17:54:20 +01001527 perf_host = 0;
1528 perf_guest = 1;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001529
Ramkumar Ramachandra09a71b92014-03-03 20:26:36 -05001530 argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage,
1531 PARSE_OPT_STOP_AT_NON_OPTION);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001532 if (!argc)
1533 usage_with_options(kvm_usage, kvm_options);
1534
1535 if (!perf_host)
1536 perf_guest = 1;
1537
Xiao Guangrong37860632012-11-15 14:17:01 +08001538 if (!file_name) {
Dongsheng Yange1a2b172013-12-06 17:25:51 -05001539 file_name = get_filename_for_perf_kvm();
David Ahernde332ac2012-10-02 22:09:53 -06001540
Xiao Guangrong37860632012-11-15 14:17:01 +08001541 if (!file_name) {
David Ahernde332ac2012-10-02 22:09:53 -06001542 pr_err("Failed to allocate memory for filename\n");
1543 return -ENOMEM;
1544 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001545 }
1546
1547 if (!strncmp(argv[0], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001548 return __cmd_record(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001549 else if (!strncmp(argv[0], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001550 return __cmd_report(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001551 else if (!strncmp(argv[0], "diff", 4))
1552 return cmd_diff(argc, argv, NULL);
1553 else if (!strncmp(argv[0], "top", 3))
1554 return cmd_top(argc, argv, NULL);
1555 else if (!strncmp(argv[0], "buildid-list", 12))
Xiao Guangrong37860632012-11-15 14:17:01 +08001556 return __cmd_buildid_list(file_name, argc, argv);
Alexander Yaryginda50ad62014-07-03 17:59:49 +04001557#ifdef HAVE_KVM_STAT_SUPPORT
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001558 else if (!strncmp(argv[0], "stat", 4))
Xiao Guangrong37860632012-11-15 14:17:01 +08001559 return kvm_cmd_stat(file_name, argc, argv);
Xiao Guangrong73210902012-11-19 16:19:21 +08001560#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001561 else
1562 usage_with_options(kvm_usage, kvm_options);
1563
1564 return 0;
1565}