blob: f8bf5f244d77dded7e19fff4bf2101d859265a6c [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 Petkov85c66be2013-02-20 16:32:30 +010016#include <lk/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
Xiao Guangrong73210902012-11-19 16:19:21 +080032#if defined(__i386__) || defined(__x86_64__)
David Howellsd2709c72012-11-19 22:21:03 +000033#include <asm/svm.h>
34#include <asm/vmx.h>
35#include <asm/kvm.h>
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080036
37struct event_key {
38 #define INVALID_KEY (~0ULL)
39 u64 key;
40 int info;
41};
42
David Ahernde332ac2012-10-02 22:09:53 -060043struct kvm_event_stats {
44 u64 time;
45 struct stats stats;
46};
47
48struct kvm_event {
49 struct list_head hash_entry;
50 struct rb_node rb;
51
52 struct event_key key;
53
54 struct kvm_event_stats total;
55
56 #define DEFAULT_VCPU_NUM 8
57 int max_vcpu;
58 struct kvm_event_stats *vcpu;
59};
60
61typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int);
62
63struct kvm_event_key {
64 const char *name;
65 key_cmp_fun key;
66};
67
68
Xiao Guangrong37860632012-11-15 14:17:01 +080069struct perf_kvm_stat;
David Ahernde332ac2012-10-02 22:09:53 -060070
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080071struct kvm_events_ops {
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -030072 bool (*is_begin_event)(struct perf_evsel *evsel,
73 struct perf_sample *sample,
74 struct event_key *key);
75 bool (*is_end_event)(struct perf_evsel *evsel,
76 struct perf_sample *sample, struct event_key *key);
Xiao Guangrong37860632012-11-15 14:17:01 +080077 void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key,
David Ahernde332ac2012-10-02 22:09:53 -060078 char decode[20]);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +080079 const char *name;
80};
81
David Ahernde332ac2012-10-02 22:09:53 -060082struct exit_reasons_table {
83 unsigned long exit_code;
84 const char *reason;
85};
86
87#define EVENTS_BITS 12
88#define EVENTS_CACHE_SIZE (1UL << EVENTS_BITS)
89
Xiao Guangrong37860632012-11-15 14:17:01 +080090struct perf_kvm_stat {
David Ahernde332ac2012-10-02 22:09:53 -060091 struct perf_tool tool;
David Ahern1afe1d12013-08-05 21:41:34 -040092 struct perf_record_opts opts;
93 struct perf_evlist *evlist;
David Ahernde332ac2012-10-02 22:09:53 -060094 struct perf_session *session;
95
96 const char *file_name;
97 const char *report_event;
98 const char *sort_key;
99 int trace_vcpu;
100
101 struct exit_reasons_table *exit_reasons;
102 int exit_reasons_size;
103 const char *exit_reasons_isa;
104
105 struct kvm_events_ops *events_ops;
106 key_cmp_fun compare;
107 struct list_head kvm_events_cache[EVENTS_CACHE_SIZE];
David Ahern1afe1d12013-08-05 21:41:34 -0400108
David Ahernde332ac2012-10-02 22:09:53 -0600109 u64 total_time;
110 u64 total_count;
David Ahern1afe1d12013-08-05 21:41:34 -0400111 u64 lost_events;
David Ahern70f7b4a2013-08-07 21:56:38 -0400112 u64 duration;
David Ahernde332ac2012-10-02 22:09:53 -0600113
David Ahern2e73f002013-08-05 21:41:37 -0400114 const char *pid_str;
115 struct intlist *pid_list;
116
David Ahernde332ac2012-10-02 22:09:53 -0600117 struct rb_root result;
David Ahern1afe1d12013-08-05 21:41:34 -0400118
119 int timerfd;
120 unsigned int display_time;
121 bool live;
David Ahernde332ac2012-10-02 22:09:53 -0600122};
123
124
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300125static void exit_event_get_key(struct perf_evsel *evsel,
126 struct perf_sample *sample,
127 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800128{
129 key->info = 0;
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300130 key->key = perf_evsel__intval(evsel, sample, "exit_reason");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800131}
132
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300133static bool kvm_exit_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800134{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300135 return !strcmp(evsel->name, "kvm:kvm_exit");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800136}
137
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300138static bool exit_event_begin(struct perf_evsel *evsel,
139 struct perf_sample *sample, struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800140{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300141 if (kvm_exit_event(evsel)) {
142 exit_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800143 return true;
144 }
145
146 return false;
147}
148
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300149static bool kvm_entry_event(struct perf_evsel *evsel)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800150{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300151 return !strcmp(evsel->name, "kvm:kvm_entry");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800152}
153
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300154static bool exit_event_end(struct perf_evsel *evsel,
155 struct perf_sample *sample __maybe_unused,
156 struct event_key *key __maybe_unused)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800157{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300158 return kvm_entry_event(evsel);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800159}
160
David Ahernde332ac2012-10-02 22:09:53 -0600161static struct exit_reasons_table vmx_exit_reasons[] = {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800162 VMX_EXIT_REASONS
163};
164
David Ahernde332ac2012-10-02 22:09:53 -0600165static struct exit_reasons_table svm_exit_reasons[] = {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800166 SVM_EXIT_REASONS
167};
168
Xiao Guangrong37860632012-11-15 14:17:01 +0800169static const char *get_exit_reason(struct perf_kvm_stat *kvm, u64 exit_code)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800170{
David Ahernde332ac2012-10-02 22:09:53 -0600171 int i = kvm->exit_reasons_size;
172 struct exit_reasons_table *tbl = kvm->exit_reasons;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800173
David Ahernde332ac2012-10-02 22:09:53 -0600174 while (i--) {
175 if (tbl->exit_code == exit_code)
176 return tbl->reason;
177 tbl++;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800178 }
179
180 pr_err("unknown kvm exit code:%lld on %s\n",
David Ahernde332ac2012-10-02 22:09:53 -0600181 (unsigned long long)exit_code, kvm->exit_reasons_isa);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800182 return "UNKNOWN";
183}
184
Xiao Guangrong37860632012-11-15 14:17:01 +0800185static void exit_event_decode_key(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600186 struct event_key *key,
187 char decode[20])
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800188{
David Ahernde332ac2012-10-02 22:09:53 -0600189 const char *exit_reason = get_exit_reason(kvm, key->key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800190
191 scnprintf(decode, 20, "%s", exit_reason);
192}
193
194static struct kvm_events_ops exit_events = {
195 .is_begin_event = exit_event_begin,
196 .is_end_event = exit_event_end,
197 .decode_key = exit_event_decode_key,
198 .name = "VM-EXIT"
199};
200
David Ahernde332ac2012-10-02 22:09:53 -0600201/*
202 * For the mmio events, we treat:
203 * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry
204 * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...).
205 */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300206static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample,
207 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800208{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300209 key->key = perf_evsel__intval(evsel, sample, "gpa");
210 key->info = perf_evsel__intval(evsel, sample, "type");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800211}
212
213#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
214#define KVM_TRACE_MMIO_READ 1
215#define KVM_TRACE_MMIO_WRITE 2
216
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300217static bool mmio_event_begin(struct perf_evsel *evsel,
218 struct perf_sample *sample, struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800219{
220 /* MMIO read begin event in kernel. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300221 if (kvm_exit_event(evsel))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800222 return true;
223
224 /* MMIO write begin event in kernel. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300225 if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
226 perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) {
227 mmio_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800228 return true;
229 }
230
231 return false;
232}
233
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300234static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample,
235 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800236{
237 /* MMIO write end event in kernel. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300238 if (kvm_entry_event(evsel))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800239 return true;
240
241 /* MMIO read end event in kernel.*/
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300242 if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
243 perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) {
244 mmio_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800245 return true;
246 }
247
248 return false;
249}
250
Xiao Guangrong37860632012-11-15 14:17:01 +0800251static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
David Ahernde332ac2012-10-02 22:09:53 -0600252 struct event_key *key,
253 char decode[20])
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800254{
255 scnprintf(decode, 20, "%#lx:%s", (unsigned long)key->key,
256 key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R");
257}
258
259static struct kvm_events_ops mmio_events = {
260 .is_begin_event = mmio_event_begin,
261 .is_end_event = mmio_event_end,
262 .decode_key = mmio_event_decode_key,
263 .name = "MMIO Access"
264};
265
266 /* The time of emulation pio access is from kvm_pio to kvm_entry. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300267static void ioport_event_get_key(struct perf_evsel *evsel,
268 struct perf_sample *sample,
269 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800270{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300271 key->key = perf_evsel__intval(evsel, sample, "port");
272 key->info = perf_evsel__intval(evsel, sample, "rw");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800273}
274
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300275static bool ioport_event_begin(struct perf_evsel *evsel,
276 struct perf_sample *sample,
277 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800278{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300279 if (!strcmp(evsel->name, "kvm:kvm_pio")) {
280 ioport_event_get_key(evsel, sample, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800281 return true;
282 }
283
284 return false;
285}
286
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300287static bool ioport_event_end(struct perf_evsel *evsel,
288 struct perf_sample *sample __maybe_unused,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800289 struct event_key *key __maybe_unused)
290{
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300291 return kvm_entry_event(evsel);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800292}
293
Xiao Guangrong37860632012-11-15 14:17:01 +0800294static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
David Ahernde332ac2012-10-02 22:09:53 -0600295 struct event_key *key,
296 char decode[20])
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800297{
298 scnprintf(decode, 20, "%#llx:%s", (unsigned long long)key->key,
299 key->info ? "POUT" : "PIN");
300}
301
302static struct kvm_events_ops ioport_events = {
303 .is_begin_event = ioport_event_begin,
304 .is_end_event = ioport_event_end,
305 .decode_key = ioport_event_decode_key,
306 .name = "IO Port Access"
307};
308
Xiao Guangrong37860632012-11-15 14:17:01 +0800309static bool register_kvm_events_ops(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800310{
311 bool ret = true;
312
David Ahernde332ac2012-10-02 22:09:53 -0600313 if (!strcmp(kvm->report_event, "vmexit"))
314 kvm->events_ops = &exit_events;
315 else if (!strcmp(kvm->report_event, "mmio"))
316 kvm->events_ops = &mmio_events;
317 else if (!strcmp(kvm->report_event, "ioport"))
318 kvm->events_ops = &ioport_events;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800319 else {
David Ahernde332ac2012-10-02 22:09:53 -0600320 pr_err("Unknown report event:%s\n", kvm->report_event);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800321 ret = false;
322 }
323
324 return ret;
325}
326
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800327struct vcpu_event_record {
328 int vcpu_id;
329 u64 start_time;
330 struct kvm_event *last_event;
331};
332
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800333
Xiao Guangrong37860632012-11-15 14:17:01 +0800334static void init_kvm_event_record(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800335{
David Ahernb880dee2012-10-08 11:17:30 -0600336 unsigned int i;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800337
David Ahernb880dee2012-10-08 11:17:30 -0600338 for (i = 0; i < EVENTS_CACHE_SIZE; i++)
David Ahernde332ac2012-10-02 22:09:53 -0600339 INIT_LIST_HEAD(&kvm->kvm_events_cache[i]);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800340}
341
David Ahern87419c92013-10-29 10:43:16 -0600342#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400343static void clear_events_cache_stats(struct list_head *kvm_events_cache)
344{
345 struct list_head *head;
346 struct kvm_event *event;
347 unsigned int i;
David Ahern62d04db2013-08-05 21:41:35 -0400348 int j;
David Ahern1afe1d12013-08-05 21:41:34 -0400349
350 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
351 head = &kvm_events_cache[i];
352 list_for_each_entry(event, head, hash_entry) {
353 /* reset stats for event */
David Ahern62d04db2013-08-05 21:41:35 -0400354 event->total.time = 0;
355 init_stats(&event->total.stats);
356
357 for (j = 0; j < event->max_vcpu; ++j) {
358 event->vcpu[j].time = 0;
359 init_stats(&event->vcpu[j].stats);
360 }
David Ahern1afe1d12013-08-05 21:41:34 -0400361 }
362 }
363}
David Ahern87419c92013-10-29 10:43:16 -0600364#endif
David Ahern1afe1d12013-08-05 21:41:34 -0400365
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800366static int kvm_events_hash_fn(u64 key)
367{
368 return key & (EVENTS_CACHE_SIZE - 1);
369}
370
371static bool kvm_event_expand(struct kvm_event *event, int vcpu_id)
372{
373 int old_max_vcpu = event->max_vcpu;
David Ahern6ca5f302013-05-25 18:24:46 -0600374 void *prev;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800375
376 if (vcpu_id < event->max_vcpu)
377 return true;
378
379 while (event->max_vcpu <= vcpu_id)
380 event->max_vcpu += DEFAULT_VCPU_NUM;
381
David Ahern6ca5f302013-05-25 18:24:46 -0600382 prev = event->vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800383 event->vcpu = realloc(event->vcpu,
384 event->max_vcpu * sizeof(*event->vcpu));
385 if (!event->vcpu) {
David Ahern6ca5f302013-05-25 18:24:46 -0600386 free(prev);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800387 pr_err("Not enough memory\n");
388 return false;
389 }
390
391 memset(event->vcpu + old_max_vcpu, 0,
392 (event->max_vcpu - old_max_vcpu) * sizeof(*event->vcpu));
393 return true;
394}
395
396static struct kvm_event *kvm_alloc_init_event(struct event_key *key)
397{
398 struct kvm_event *event;
399
400 event = zalloc(sizeof(*event));
401 if (!event) {
402 pr_err("Not enough memory\n");
403 return NULL;
404 }
405
406 event->key = *key;
407 return event;
408}
409
Xiao Guangrong37860632012-11-15 14:17:01 +0800410static struct kvm_event *find_create_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600411 struct event_key *key)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800412{
413 struct kvm_event *event;
414 struct list_head *head;
415
416 BUG_ON(key->key == INVALID_KEY);
417
David Ahernde332ac2012-10-02 22:09:53 -0600418 head = &kvm->kvm_events_cache[kvm_events_hash_fn(key->key)];
David Ahern355afe82012-10-08 11:17:32 -0600419 list_for_each_entry(event, head, hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800420 if (event->key.key == key->key && event->key.info == key->info)
421 return event;
David Ahern355afe82012-10-08 11:17:32 -0600422 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800423
424 event = kvm_alloc_init_event(key);
425 if (!event)
426 return NULL;
427
428 list_add(&event->hash_entry, head);
429 return event;
430}
431
Xiao Guangrong37860632012-11-15 14:17:01 +0800432static bool handle_begin_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600433 struct vcpu_event_record *vcpu_record,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800434 struct event_key *key, u64 timestamp)
435{
436 struct kvm_event *event = NULL;
437
438 if (key->key != INVALID_KEY)
David Ahernde332ac2012-10-02 22:09:53 -0600439 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800440
441 vcpu_record->last_event = event;
442 vcpu_record->start_time = timestamp;
443 return true;
444}
445
446static void
447kvm_update_event_stats(struct kvm_event_stats *kvm_stats, u64 time_diff)
448{
449 kvm_stats->time += time_diff;
450 update_stats(&kvm_stats->stats, time_diff);
451}
452
453static double kvm_event_rel_stddev(int vcpu_id, struct kvm_event *event)
454{
455 struct kvm_event_stats *kvm_stats = &event->total;
456
457 if (vcpu_id != -1)
458 kvm_stats = &event->vcpu[vcpu_id];
459
460 return rel_stddev_stats(stddev_stats(&kvm_stats->stats),
461 avg_stats(&kvm_stats->stats));
462}
463
464static bool update_kvm_event(struct kvm_event *event, int vcpu_id,
465 u64 time_diff)
466{
David Ahern2aa8eab2012-10-08 11:17:35 -0600467 if (vcpu_id == -1) {
468 kvm_update_event_stats(&event->total, time_diff);
469 return true;
470 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800471
472 if (!kvm_event_expand(event, vcpu_id))
473 return false;
474
475 kvm_update_event_stats(&event->vcpu[vcpu_id], time_diff);
476 return true;
477}
478
Xiao Guangrong37860632012-11-15 14:17:01 +0800479static bool handle_end_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600480 struct vcpu_event_record *vcpu_record,
481 struct event_key *key,
David Ahern70f7b4a2013-08-07 21:56:38 -0400482 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800483{
484 struct kvm_event *event;
485 u64 time_begin, time_diff;
David Ahern2aa8eab2012-10-08 11:17:35 -0600486 int vcpu;
487
488 if (kvm->trace_vcpu == -1)
489 vcpu = -1;
490 else
491 vcpu = vcpu_record->vcpu_id;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800492
493 event = vcpu_record->last_event;
494 time_begin = vcpu_record->start_time;
495
496 /* The begin event is not caught. */
497 if (!time_begin)
498 return true;
499
500 /*
501 * In some case, the 'begin event' only records the start timestamp,
502 * the actual event is recognized in the 'end event' (e.g. mmio-event).
503 */
504
505 /* Both begin and end events did not get the key. */
506 if (!event && key->key == INVALID_KEY)
507 return true;
508
509 if (!event)
David Ahernde332ac2012-10-02 22:09:53 -0600510 event = find_create_kvm_event(kvm, key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800511
512 if (!event)
513 return false;
514
515 vcpu_record->last_event = NULL;
516 vcpu_record->start_time = 0;
517
David Ahern1afe1d12013-08-05 21:41:34 -0400518 /* seems to happen once in a while during live mode */
David Ahern70f7b4a2013-08-07 21:56:38 -0400519 if (sample->time < time_begin) {
David Ahern1afe1d12013-08-05 21:41:34 -0400520 pr_debug("End time before begin time; skipping event.\n");
521 return true;
522 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800523
David Ahern70f7b4a2013-08-07 21:56:38 -0400524 time_diff = sample->time - time_begin;
525
526 if (kvm->duration && time_diff > kvm->duration) {
527 char decode[32];
528
529 kvm->events_ops->decode_key(kvm, &event->key, decode);
530 if (strcmp(decode, "HLT")) {
531 pr_info("%" PRIu64 " VM %d, vcpu %d: %s event took %" PRIu64 "usec\n",
532 sample->time, sample->pid, vcpu_record->vcpu_id,
533 decode, time_diff/1000);
534 }
535 }
536
David Ahern2aa8eab2012-10-08 11:17:35 -0600537 return update_kvm_event(event, vcpu, time_diff);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800538}
539
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300540static
541struct vcpu_event_record *per_vcpu_record(struct thread *thread,
542 struct perf_evsel *evsel,
543 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800544{
545 /* Only kvm_entry records vcpu id. */
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300546 if (!thread->priv && kvm_entry_event(evsel)) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800547 struct vcpu_event_record *vcpu_record;
548
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300549 vcpu_record = zalloc(sizeof(*vcpu_record));
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800550 if (!vcpu_record) {
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300551 pr_err("%s: Not enough memory\n", __func__);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800552 return NULL;
553 }
554
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300555 vcpu_record->vcpu_id = perf_evsel__intval(evsel, sample, "vcpu_id");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800556 thread->priv = vcpu_record;
557 }
558
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300559 return thread->priv;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800560}
561
Xiao Guangrong37860632012-11-15 14:17:01 +0800562static bool handle_kvm_event(struct perf_kvm_stat *kvm,
David Ahernde332ac2012-10-02 22:09:53 -0600563 struct thread *thread,
564 struct perf_evsel *evsel,
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300565 struct perf_sample *sample)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800566{
567 struct vcpu_event_record *vcpu_record;
568 struct event_key key = {.key = INVALID_KEY};
569
Arnaldo Carvalho de Melo14907e72012-09-21 16:10:26 -0300570 vcpu_record = per_vcpu_record(thread, evsel, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800571 if (!vcpu_record)
572 return true;
573
David Ahern2aa8eab2012-10-08 11:17:35 -0600574 /* only process events for vcpus user cares about */
575 if ((kvm->trace_vcpu != -1) &&
576 (kvm->trace_vcpu != vcpu_record->vcpu_id))
577 return true;
578
David Ahernde332ac2012-10-02 22:09:53 -0600579 if (kvm->events_ops->is_begin_event(evsel, sample, &key))
580 return handle_begin_event(kvm, vcpu_record, &key, sample->time);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800581
David Ahernde332ac2012-10-02 22:09:53 -0600582 if (kvm->events_ops->is_end_event(evsel, sample, &key))
David Ahern70f7b4a2013-08-07 21:56:38 -0400583 return handle_end_event(kvm, vcpu_record, &key, sample);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800584
585 return true;
586}
587
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800588#define GET_EVENT_KEY(func, field) \
589static u64 get_event_ ##func(struct kvm_event *event, int vcpu) \
590{ \
591 if (vcpu == -1) \
592 return event->total.field; \
593 \
594 if (vcpu >= event->max_vcpu) \
595 return 0; \
596 \
597 return event->vcpu[vcpu].field; \
598}
599
600#define COMPARE_EVENT_KEY(func, field) \
601GET_EVENT_KEY(func, field) \
602static int compare_kvm_event_ ## func(struct kvm_event *one, \
603 struct kvm_event *two, int vcpu)\
604{ \
605 return get_event_ ##func(one, vcpu) > \
606 get_event_ ##func(two, vcpu); \
607}
608
609GET_EVENT_KEY(time, time);
610COMPARE_EVENT_KEY(count, stats.n);
611COMPARE_EVENT_KEY(mean, stats.mean);
David Ahern62d04db2013-08-05 21:41:35 -0400612GET_EVENT_KEY(max, stats.max);
613GET_EVENT_KEY(min, stats.min);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800614
615#define DEF_SORT_NAME_KEY(name, compare_key) \
616 { #name, compare_kvm_event_ ## compare_key }
617
618static struct kvm_event_key keys[] = {
619 DEF_SORT_NAME_KEY(sample, count),
620 DEF_SORT_NAME_KEY(time, mean),
621 { NULL, NULL }
622};
623
Xiao Guangrong37860632012-11-15 14:17:01 +0800624static bool select_key(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800625{
626 int i;
627
628 for (i = 0; keys[i].name; i++) {
David Ahernde332ac2012-10-02 22:09:53 -0600629 if (!strcmp(keys[i].name, kvm->sort_key)) {
630 kvm->compare = keys[i].key;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800631 return true;
632 }
633 }
634
David Ahernde332ac2012-10-02 22:09:53 -0600635 pr_err("Unknown compare key:%s\n", kvm->sort_key);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800636 return false;
637}
638
David Ahernde332ac2012-10-02 22:09:53 -0600639static void insert_to_result(struct rb_root *result, struct kvm_event *event,
640 key_cmp_fun bigger, int vcpu)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800641{
David Ahernde332ac2012-10-02 22:09:53 -0600642 struct rb_node **rb = &result->rb_node;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800643 struct rb_node *parent = NULL;
644 struct kvm_event *p;
645
646 while (*rb) {
647 p = container_of(*rb, struct kvm_event, rb);
648 parent = *rb;
649
650 if (bigger(event, p, vcpu))
651 rb = &(*rb)->rb_left;
652 else
653 rb = &(*rb)->rb_right;
654 }
655
656 rb_link_node(&event->rb, parent, rb);
David Ahernde332ac2012-10-02 22:09:53 -0600657 rb_insert_color(&event->rb, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800658}
659
Xiao Guangrong37860632012-11-15 14:17:01 +0800660static void
661update_total_count(struct perf_kvm_stat *kvm, struct kvm_event *event)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800662{
David Ahernde332ac2012-10-02 22:09:53 -0600663 int vcpu = kvm->trace_vcpu;
664
665 kvm->total_count += get_event_count(event, vcpu);
666 kvm->total_time += get_event_time(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800667}
668
669static bool event_is_valid(struct kvm_event *event, int vcpu)
670{
671 return !!get_event_count(event, vcpu);
672}
673
Xiao Guangrong37860632012-11-15 14:17:01 +0800674static void sort_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800675{
676 unsigned int i;
David Ahernde332ac2012-10-02 22:09:53 -0600677 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800678 struct kvm_event *event;
679
David Ahern355afe82012-10-08 11:17:32 -0600680 for (i = 0; i < EVENTS_CACHE_SIZE; i++) {
681 list_for_each_entry(event, &kvm->kvm_events_cache[i], hash_entry) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800682 if (event_is_valid(event, vcpu)) {
David Ahernde332ac2012-10-02 22:09:53 -0600683 update_total_count(kvm, event);
684 insert_to_result(&kvm->result, event,
685 kvm->compare, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800686 }
David Ahern355afe82012-10-08 11:17:32 -0600687 }
688 }
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800689}
690
691/* returns left most element of result, and erase it */
David Ahernde332ac2012-10-02 22:09:53 -0600692static struct kvm_event *pop_from_result(struct rb_root *result)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800693{
David Ahernde332ac2012-10-02 22:09:53 -0600694 struct rb_node *node = rb_first(result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800695
696 if (!node)
697 return NULL;
698
David Ahernde332ac2012-10-02 22:09:53 -0600699 rb_erase(node, result);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800700 return container_of(node, struct kvm_event, rb);
701}
702
David Ahern1afe1d12013-08-05 21:41:34 -0400703static void print_vcpu_info(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800704{
David Ahern1afe1d12013-08-05 21:41:34 -0400705 int vcpu = kvm->trace_vcpu;
706
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800707 pr_info("Analyze events for ");
708
David Ahern1afe1d12013-08-05 21:41:34 -0400709 if (kvm->live) {
710 if (kvm->opts.target.system_wide)
711 pr_info("all VMs, ");
712 else if (kvm->opts.target.pid)
713 pr_info("pid(s) %s, ", kvm->opts.target.pid);
714 else
715 pr_info("dazed and confused on what is monitored, ");
716 }
717
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800718 if (vcpu == -1)
719 pr_info("all VCPUs:\n\n");
720 else
721 pr_info("VCPU %d:\n\n", vcpu);
722}
723
David Ahern1afe1d12013-08-05 21:41:34 -0400724static void show_timeofday(void)
725{
726 char date[64];
727 struct timeval tv;
728 struct tm ltime;
729
730 gettimeofday(&tv, NULL);
731 if (localtime_r(&tv.tv_sec, &ltime)) {
732 strftime(date, sizeof(date), "%H:%M:%S", &ltime);
733 pr_info("%s.%06ld", date, tv.tv_usec);
734 } else
735 pr_info("00:00:00.000000");
736
737 return;
738}
739
Xiao Guangrong37860632012-11-15 14:17:01 +0800740static void print_result(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800741{
742 char decode[20];
743 struct kvm_event *event;
David Ahernde332ac2012-10-02 22:09:53 -0600744 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800745
David Ahern1afe1d12013-08-05 21:41:34 -0400746 if (kvm->live) {
747 puts(CONSOLE_CLEAR);
748 show_timeofday();
749 }
750
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800751 pr_info("\n\n");
David Ahern1afe1d12013-08-05 21:41:34 -0400752 print_vcpu_info(kvm);
David Ahernde332ac2012-10-02 22:09:53 -0600753 pr_info("%20s ", kvm->events_ops->name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800754 pr_info("%10s ", "Samples");
755 pr_info("%9s ", "Samples%");
756
757 pr_info("%9s ", "Time%");
David Ahern62d04db2013-08-05 21:41:35 -0400758 pr_info("%10s ", "Min Time");
759 pr_info("%10s ", "Max Time");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800760 pr_info("%16s ", "Avg time");
761 pr_info("\n\n");
762
David Ahernde332ac2012-10-02 22:09:53 -0600763 while ((event = pop_from_result(&kvm->result))) {
David Ahern62d04db2013-08-05 21:41:35 -0400764 u64 ecount, etime, max, min;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800765
766 ecount = get_event_count(event, vcpu);
767 etime = get_event_time(event, vcpu);
David Ahern62d04db2013-08-05 21:41:35 -0400768 max = get_event_max(event, vcpu);
769 min = get_event_min(event, vcpu);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800770
David Ahernde332ac2012-10-02 22:09:53 -0600771 kvm->events_ops->decode_key(kvm, &event->key, decode);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800772 pr_info("%20s ", decode);
773 pr_info("%10llu ", (unsigned long long)ecount);
David Ahernde332ac2012-10-02 22:09:53 -0600774 pr_info("%8.2f%% ", (double)ecount / kvm->total_count * 100);
775 pr_info("%8.2f%% ", (double)etime / kvm->total_time * 100);
David Ahern62d04db2013-08-05 21:41:35 -0400776 pr_info("%8" PRIu64 "us ", min / 1000);
777 pr_info("%8" PRIu64 "us ", max / 1000);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800778 pr_info("%9.2fus ( +-%7.2f%% )", (double)etime / ecount/1e3,
779 kvm_event_rel_stddev(vcpu, event));
780 pr_info("\n");
781 }
782
David Aherne4f76372012-10-08 11:17:34 -0600783 pr_info("\nTotal Samples:%" PRIu64 ", Total events handled time:%.2fus.\n\n",
784 kvm->total_count, kvm->total_time / 1e3);
David Ahern1afe1d12013-08-05 21:41:34 -0400785
786 if (kvm->lost_events)
787 pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
788}
789
David Ahern87419c92013-10-29 10:43:16 -0600790#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400791static int process_lost_event(struct perf_tool *tool,
792 union perf_event *event __maybe_unused,
793 struct perf_sample *sample __maybe_unused,
794 struct machine *machine __maybe_unused)
795{
796 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat, tool);
797
798 kvm->lost_events++;
799 return 0;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800800}
David Ahern87419c92013-10-29 10:43:16 -0600801#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800802
David Ahern2e73f002013-08-05 21:41:37 -0400803static bool skip_sample(struct perf_kvm_stat *kvm,
804 struct perf_sample *sample)
805{
806 if (kvm->pid_list && intlist__find(kvm->pid_list, sample->pid) == NULL)
807 return true;
808
809 return false;
810}
811
David Ahernde332ac2012-10-02 22:09:53 -0600812static int process_sample_event(struct perf_tool *tool,
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800813 union perf_event *event,
814 struct perf_sample *sample,
815 struct perf_evsel *evsel,
816 struct machine *machine)
817{
David Ahern2e73f002013-08-05 21:41:37 -0400818 struct thread *thread;
Xiao Guangrong37860632012-11-15 14:17:01 +0800819 struct perf_kvm_stat *kvm = container_of(tool, struct perf_kvm_stat,
820 tool);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800821
David Ahern2e73f002013-08-05 21:41:37 -0400822 if (skip_sample(kvm, sample))
823 return 0;
824
Adrian Hunter314add62013-08-27 11:23:03 +0300825 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800826 if (thread == NULL) {
827 pr_debug("problem processing %d event, skipping it.\n",
828 event->header.type);
829 return -1;
830 }
831
David Ahernde332ac2012-10-02 22:09:53 -0600832 if (!handle_kvm_event(kvm, thread, evsel, sample))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800833 return -1;
834
835 return 0;
836}
837
David Ahern1afe1d12013-08-05 21:41:34 -0400838static int cpu_isa_config(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800839{
David Ahern1afe1d12013-08-05 21:41:34 -0400840 char buf[64], *cpuid;
841 int err, isa;
842
843 if (kvm->live) {
844 err = get_cpuid(buf, sizeof(buf));
845 if (err != 0) {
846 pr_err("Failed to look up CPU type (Intel or AMD)\n");
847 return err;
848 }
849 cpuid = buf;
850 } else
851 cpuid = kvm->session->header.env.cpuid;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800852
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800853 if (strstr(cpuid, "Intel"))
854 isa = 1;
855 else if (strstr(cpuid, "AMD"))
856 isa = 0;
857 else {
858 pr_err("CPU %s is not supported.\n", cpuid);
David Ahern1afe1d12013-08-05 21:41:34 -0400859 return -ENOTSUP;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +0800860 }
861
David Ahern1afe1d12013-08-05 21:41:34 -0400862 if (isa == 1) {
863 kvm->exit_reasons = vmx_exit_reasons;
864 kvm->exit_reasons_size = ARRAY_SIZE(vmx_exit_reasons);
865 kvm->exit_reasons_isa = "VMX";
866 }
867
868 return 0;
869}
870
871static bool verify_vcpu(int vcpu)
872{
873 if (vcpu != -1 && vcpu < 0) {
874 pr_err("Invalid vcpu:%d.\n", vcpu);
875 return false;
876 }
877
878 return true;
879}
880
David Ahern87419c92013-10-29 10:43:16 -0600881#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -0400882/* keeping the max events to a modest level to keep
883 * the processing of samples per mmap smooth.
884 */
885#define PERF_KVM__MAX_EVENTS_PER_MMAP 25
886
887static s64 perf_kvm__mmap_read_idx(struct perf_kvm_stat *kvm, int idx,
888 u64 *mmap_time)
889{
890 union perf_event *event;
891 struct perf_sample sample;
892 s64 n = 0;
893 int err;
894
895 *mmap_time = ULLONG_MAX;
896 while ((event = perf_evlist__mmap_read(kvm->evlist, idx)) != NULL) {
897 err = perf_evlist__parse_sample(kvm->evlist, event, &sample);
898 if (err) {
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800899 perf_evlist__mmap_consume(kvm->evlist, idx);
David Ahern1afe1d12013-08-05 21:41:34 -0400900 pr_err("Failed to parse sample\n");
901 return -1;
902 }
903
904 err = perf_session_queue_event(kvm->session, event, &sample, 0);
Zhouyi Zhou8e50d382013-10-24 15:43:33 +0800905 /*
906 * FIXME: Here we can't consume the event, as perf_session_queue_event will
907 * point to it, and it'll get possibly overwritten by the kernel.
908 */
909 perf_evlist__mmap_consume(kvm->evlist, idx);
910
David Ahern1afe1d12013-08-05 21:41:34 -0400911 if (err) {
912 pr_err("Failed to enqueue sample: %d\n", err);
913 return -1;
914 }
915
916 /* save time stamp of our first sample for this mmap */
917 if (n == 0)
918 *mmap_time = sample.time;
919
920 /* limit events per mmap handled all at once */
921 n++;
922 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
923 break;
924 }
925
926 return n;
927}
928
929static int perf_kvm__mmap_read(struct perf_kvm_stat *kvm)
930{
931 int i, err, throttled = 0;
932 s64 n, ntotal = 0;
933 u64 flush_time = ULLONG_MAX, mmap_time;
934
935 for (i = 0; i < kvm->evlist->nr_mmaps; i++) {
936 n = perf_kvm__mmap_read_idx(kvm, i, &mmap_time);
937 if (n < 0)
938 return -1;
939
940 /* flush time is going to be the minimum of all the individual
941 * mmap times. Essentially, we flush all the samples queued up
942 * from the last pass under our minimal start time -- that leaves
943 * a very small race for samples to come in with a lower timestamp.
944 * The ioctl to return the perf_clock timestamp should close the
945 * race entirely.
946 */
947 if (mmap_time < flush_time)
948 flush_time = mmap_time;
949
950 ntotal += n;
951 if (n == PERF_KVM__MAX_EVENTS_PER_MMAP)
952 throttled = 1;
953 }
954
955 /* flush queue after each round in which we processed events */
956 if (ntotal) {
957 kvm->session->ordered_samples.next_flush = flush_time;
958 err = kvm->tool.finished_round(&kvm->tool, NULL, kvm->session);
959 if (err) {
960 if (kvm->lost_events)
961 pr_info("\nLost events: %" PRIu64 "\n\n",
962 kvm->lost_events);
963 return err;
964 }
965 }
966
967 return throttled;
968}
969
970static volatile int done;
971
972static void sig_handler(int sig __maybe_unused)
973{
974 done = 1;
975}
976
977static int perf_kvm__timerfd_create(struct perf_kvm_stat *kvm)
978{
979 struct itimerspec new_value;
980 int rc = -1;
981
982 kvm->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
983 if (kvm->timerfd < 0) {
984 pr_err("timerfd_create failed\n");
985 goto out;
986 }
987
988 new_value.it_value.tv_sec = kvm->display_time;
989 new_value.it_value.tv_nsec = 0;
990 new_value.it_interval.tv_sec = kvm->display_time;
991 new_value.it_interval.tv_nsec = 0;
992
993 if (timerfd_settime(kvm->timerfd, 0, &new_value, NULL) != 0) {
994 pr_err("timerfd_settime failed: %d\n", errno);
995 close(kvm->timerfd);
996 goto out;
997 }
998
999 rc = 0;
1000out:
1001 return rc;
1002}
1003
1004static int perf_kvm__handle_timerfd(struct perf_kvm_stat *kvm)
1005{
1006 uint64_t c;
1007 int rc;
1008
1009 rc = read(kvm->timerfd, &c, sizeof(uint64_t));
1010 if (rc < 0) {
1011 if (errno == EAGAIN)
1012 return 0;
1013
1014 pr_err("Failed to read timer fd: %d\n", errno);
1015 return -1;
1016 }
1017
1018 if (rc != sizeof(uint64_t)) {
1019 pr_err("Error reading timer fd - invalid size returned\n");
1020 return -1;
1021 }
1022
1023 if (c != 1)
1024 pr_debug("Missed timer beats: %" PRIu64 "\n", c-1);
1025
1026 /* update display */
1027 sort_result(kvm);
1028 print_result(kvm);
1029
1030 /* reset counts */
1031 clear_events_cache_stats(kvm->kvm_events_cache);
1032 kvm->total_count = 0;
1033 kvm->total_time = 0;
1034 kvm->lost_events = 0;
1035
1036 return 0;
1037}
1038
1039static int fd_set_nonblock(int fd)
1040{
1041 long arg = 0;
1042
1043 arg = fcntl(fd, F_GETFL);
1044 if (arg < 0) {
1045 pr_err("Failed to get current flags for fd %d\n", fd);
1046 return -1;
1047 }
1048
1049 if (fcntl(fd, F_SETFL, arg | O_NONBLOCK) < 0) {
1050 pr_err("Failed to set non-block option on fd %d\n", fd);
1051 return -1;
1052 }
1053
1054 return 0;
1055}
1056
1057static
1058int perf_kvm__handle_stdin(struct termios *tc_now, struct termios *tc_save)
1059{
1060 int c;
1061
1062 tcsetattr(0, TCSANOW, tc_now);
1063 c = getc(stdin);
1064 tcsetattr(0, TCSAFLUSH, tc_save);
1065
1066 if (c == 'q')
1067 return 1;
1068
1069 return 0;
1070}
1071
1072static int kvm_events_live_report(struct perf_kvm_stat *kvm)
1073{
1074 struct pollfd *pollfds = NULL;
1075 int nr_fds, nr_stdin, ret, err = -EINVAL;
1076 struct termios tc, save;
1077
1078 /* live flag must be set first */
1079 kvm->live = true;
1080
1081 ret = cpu_isa_config(kvm);
1082 if (ret < 0)
1083 return ret;
1084
1085 if (!verify_vcpu(kvm->trace_vcpu) ||
1086 !select_key(kvm) ||
1087 !register_kvm_events_ops(kvm)) {
1088 goto out;
1089 }
1090
1091 init_kvm_event_record(kvm);
1092
1093 tcgetattr(0, &save);
1094 tc = save;
1095 tc.c_lflag &= ~(ICANON | ECHO);
1096 tc.c_cc[VMIN] = 0;
1097 tc.c_cc[VTIME] = 0;
1098
1099 signal(SIGINT, sig_handler);
1100 signal(SIGTERM, sig_handler);
1101
1102 /* copy pollfds -- need to add timerfd and stdin */
1103 nr_fds = kvm->evlist->nr_fds;
1104 pollfds = zalloc(sizeof(struct pollfd) * (nr_fds + 2));
1105 if (!pollfds) {
1106 err = -ENOMEM;
1107 goto out;
1108 }
1109 memcpy(pollfds, kvm->evlist->pollfd,
1110 sizeof(struct pollfd) * kvm->evlist->nr_fds);
1111
1112 /* add timer fd */
1113 if (perf_kvm__timerfd_create(kvm) < 0) {
1114 err = -1;
1115 goto out;
1116 }
1117
1118 pollfds[nr_fds].fd = kvm->timerfd;
1119 pollfds[nr_fds].events = POLLIN;
1120 nr_fds++;
1121
1122 pollfds[nr_fds].fd = fileno(stdin);
1123 pollfds[nr_fds].events = POLLIN;
1124 nr_stdin = nr_fds;
1125 nr_fds++;
1126 if (fd_set_nonblock(fileno(stdin)) != 0)
1127 goto out;
1128
1129 /* everything is good - enable the events and process */
1130 perf_evlist__enable(kvm->evlist);
1131
1132 while (!done) {
1133 int rc;
1134
1135 rc = perf_kvm__mmap_read(kvm);
1136 if (rc < 0)
1137 break;
1138
1139 err = perf_kvm__handle_timerfd(kvm);
1140 if (err)
1141 goto out;
1142
1143 if (pollfds[nr_stdin].revents & POLLIN)
1144 done = perf_kvm__handle_stdin(&tc, &save);
1145
1146 if (!rc && !done)
1147 err = poll(pollfds, nr_fds, 100);
1148 }
1149
1150 perf_evlist__disable(kvm->evlist);
1151
1152 if (err == 0) {
1153 sort_result(kvm);
1154 print_result(kvm);
1155 }
1156
1157out:
1158 if (kvm->timerfd >= 0)
1159 close(kvm->timerfd);
1160
1161 if (pollfds)
1162 free(pollfds);
1163
1164 return err;
1165}
1166
1167static int kvm_live_open_events(struct perf_kvm_stat *kvm)
1168{
1169 int err, rc = -1;
1170 struct perf_evsel *pos;
1171 struct perf_evlist *evlist = kvm->evlist;
1172
1173 perf_evlist__config(evlist, &kvm->opts);
1174
1175 /*
1176 * Note: exclude_{guest,host} do not apply here.
1177 * This command processes KVM tracepoints from host only
1178 */
1179 list_for_each_entry(pos, &evlist->entries, node) {
1180 struct perf_event_attr *attr = &pos->attr;
1181
1182 /* make sure these *are* set */
Adrian Huntere71aa282013-09-06 22:40:12 +03001183 perf_evsel__set_sample_bit(pos, TID);
1184 perf_evsel__set_sample_bit(pos, TIME);
1185 perf_evsel__set_sample_bit(pos, CPU);
1186 perf_evsel__set_sample_bit(pos, RAW);
David Ahern1afe1d12013-08-05 21:41:34 -04001187 /* make sure these are *not*; want as small a sample as possible */
Adrian Huntere71aa282013-09-06 22:40:12 +03001188 perf_evsel__reset_sample_bit(pos, PERIOD);
1189 perf_evsel__reset_sample_bit(pos, IP);
1190 perf_evsel__reset_sample_bit(pos, CALLCHAIN);
1191 perf_evsel__reset_sample_bit(pos, ADDR);
1192 perf_evsel__reset_sample_bit(pos, READ);
David Ahern1afe1d12013-08-05 21:41:34 -04001193 attr->mmap = 0;
1194 attr->comm = 0;
1195 attr->task = 0;
1196
1197 attr->sample_period = 1;
1198
1199 attr->watermark = 0;
1200 attr->wakeup_events = 1000;
1201
1202 /* will enable all once we are ready */
1203 attr->disabled = 1;
1204 }
1205
1206 err = perf_evlist__open(evlist);
1207 if (err < 0) {
1208 printf("Couldn't create the events: %s\n", strerror(errno));
1209 goto out;
1210 }
1211
1212 if (perf_evlist__mmap(evlist, kvm->opts.mmap_pages, false) < 0) {
1213 ui__error("Failed to mmap the events: %s\n", strerror(errno));
1214 perf_evlist__close(evlist);
1215 goto out;
1216 }
1217
1218 rc = 0;
1219
1220out:
1221 return rc;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001222}
David Ahern87419c92013-10-29 10:43:16 -06001223#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001224
Xiao Guangrong37860632012-11-15 14:17:01 +08001225static int read_events(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001226{
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001227 int ret;
1228
David Ahernde332ac2012-10-02 22:09:53 -06001229 struct perf_tool eops = {
1230 .sample = process_sample_event,
1231 .comm = perf_event__process_comm,
1232 .ordered_samples = true,
1233 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001234 struct perf_data_file file = {
1235 .path = input_name,
1236 .mode = PERF_DATA_MODE_READ,
1237 };
David Ahernde332ac2012-10-02 22:09:53 -06001238
1239 kvm->tool = eops;
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001240 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahernde332ac2012-10-02 22:09:53 -06001241 if (!kvm->session) {
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001242 pr_err("Initializing perf session failed\n");
1243 return -EINVAL;
1244 }
1245
David Ahernde332ac2012-10-02 22:09:53 -06001246 if (!perf_session__has_traces(kvm->session, "kvm record"))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001247 return -EINVAL;
1248
1249 /*
1250 * Do not use 'isa' recorded in kvm_exit tracepoint since it is not
1251 * traced in the old kernel.
1252 */
David Ahern1afe1d12013-08-05 21:41:34 -04001253 ret = cpu_isa_config(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001254 if (ret < 0)
1255 return ret;
1256
David Ahernde332ac2012-10-02 22:09:53 -06001257 return perf_session__process_events(kvm->session, &kvm->tool);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001258}
1259
David Ahern2e73f002013-08-05 21:41:37 -04001260static int parse_target_str(struct perf_kvm_stat *kvm)
1261{
1262 if (kvm->pid_str) {
1263 kvm->pid_list = intlist__new(kvm->pid_str);
1264 if (kvm->pid_list == NULL) {
1265 pr_err("Error parsing process id string\n");
1266 return -EINVAL;
1267 }
1268 }
1269
1270 return 0;
1271}
1272
Xiao Guangrong37860632012-11-15 14:17:01 +08001273static int kvm_events_report_vcpu(struct perf_kvm_stat *kvm)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001274{
1275 int ret = -EINVAL;
David Ahernde332ac2012-10-02 22:09:53 -06001276 int vcpu = kvm->trace_vcpu;
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001277
David Ahern2e73f002013-08-05 21:41:37 -04001278 if (parse_target_str(kvm) != 0)
1279 goto exit;
1280
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001281 if (!verify_vcpu(vcpu))
1282 goto exit;
1283
David Ahernde332ac2012-10-02 22:09:53 -06001284 if (!select_key(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001285 goto exit;
1286
David Ahernde332ac2012-10-02 22:09:53 -06001287 if (!register_kvm_events_ops(kvm))
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001288 goto exit;
1289
David Ahernde332ac2012-10-02 22:09:53 -06001290 init_kvm_event_record(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001291 setup_pager();
1292
David Ahernde332ac2012-10-02 22:09:53 -06001293 ret = read_events(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001294 if (ret)
1295 goto exit;
1296
David Ahernde332ac2012-10-02 22:09:53 -06001297 sort_result(kvm);
1298 print_result(kvm);
1299
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001300exit:
1301 return ret;
1302}
1303
David Ahern8fdd84c2013-08-02 14:05:42 -06001304static const char * const kvm_events_tp[] = {
1305 "kvm:kvm_entry",
1306 "kvm:kvm_exit",
1307 "kvm:kvm_mmio",
1308 "kvm:kvm_pio",
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001309};
1310
1311#define STRDUP_FAIL_EXIT(s) \
1312 ({ char *_p; \
1313 _p = strdup(s); \
1314 if (!_p) \
1315 return -ENOMEM; \
1316 _p; \
1317 })
1318
Xiao Guangrong37860632012-11-15 14:17:01 +08001319static int
1320kvm_events_record(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001321{
1322 unsigned int rec_argc, i, j;
1323 const char **rec_argv;
David Ahern8fdd84c2013-08-02 14:05:42 -06001324 const char * const record_args[] = {
1325 "record",
1326 "-R",
David Ahern8fdd84c2013-08-02 14:05:42 -06001327 "-m", "1024",
1328 "-c", "1",
1329 };
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001330
David Ahern8fdd84c2013-08-02 14:05:42 -06001331 rec_argc = ARRAY_SIZE(record_args) + argc + 2 +
1332 2 * ARRAY_SIZE(kvm_events_tp);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001333 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1334
1335 if (rec_argv == NULL)
1336 return -ENOMEM;
1337
1338 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1339 rec_argv[i] = STRDUP_FAIL_EXIT(record_args[i]);
1340
David Ahern8fdd84c2013-08-02 14:05:42 -06001341 for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) {
1342 rec_argv[i++] = "-e";
1343 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm_events_tp[j]);
1344 }
1345
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001346 rec_argv[i++] = STRDUP_FAIL_EXIT("-o");
David Ahernde332ac2012-10-02 22:09:53 -06001347 rec_argv[i++] = STRDUP_FAIL_EXIT(kvm->file_name);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001348
1349 for (j = 1; j < (unsigned int)argc; j++, i++)
1350 rec_argv[i] = argv[j];
1351
1352 return cmd_record(i, rec_argv, NULL);
1353}
1354
Xiao Guangrong37860632012-11-15 14:17:01 +08001355static int
1356kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001357{
David Ahernde332ac2012-10-02 22:09:53 -06001358 const struct option kvm_events_report_options[] = {
1359 OPT_STRING(0, "event", &kvm->report_event, "report event",
1360 "event for reporting: vmexit, mmio, ioport"),
1361 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1362 "vcpu id to report"),
1363 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1364 "key for sorting: sample(sort by samples number)"
1365 " time (sort by avg time)"),
David Ahern2e73f002013-08-05 21:41:37 -04001366 OPT_STRING('p', "pid", &kvm->pid_str, "pid",
1367 "analyze events only for given process id(s)"),
David Ahernde332ac2012-10-02 22:09:53 -06001368 OPT_END()
1369 };
1370
1371 const char * const kvm_events_report_usage[] = {
1372 "perf kvm stat report [<options>]",
1373 NULL
1374 };
1375
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001376 symbol__init();
1377
1378 if (argc) {
1379 argc = parse_options(argc, argv,
1380 kvm_events_report_options,
1381 kvm_events_report_usage, 0);
1382 if (argc)
1383 usage_with_options(kvm_events_report_usage,
1384 kvm_events_report_options);
1385 }
1386
David Ahernde332ac2012-10-02 22:09:53 -06001387 return kvm_events_report_vcpu(kvm);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001388}
1389
David Ahern87419c92013-10-29 10:43:16 -06001390#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001391static struct perf_evlist *kvm_live_event_list(void)
1392{
1393 struct perf_evlist *evlist;
1394 char *tp, *name, *sys;
1395 unsigned int j;
1396 int err = -1;
1397
1398 evlist = perf_evlist__new();
1399 if (evlist == NULL)
1400 return NULL;
1401
1402 for (j = 0; j < ARRAY_SIZE(kvm_events_tp); j++) {
1403
1404 tp = strdup(kvm_events_tp[j]);
1405 if (tp == NULL)
1406 goto out;
1407
1408 /* split tracepoint into subsystem and name */
1409 sys = tp;
1410 name = strchr(tp, ':');
1411 if (name == NULL) {
1412 pr_err("Error parsing %s tracepoint: subsystem delimiter not found\n",
1413 kvm_events_tp[j]);
1414 free(tp);
1415 goto out;
1416 }
1417 *name = '\0';
1418 name++;
1419
1420 if (perf_evlist__add_newtp(evlist, sys, name, NULL)) {
1421 pr_err("Failed to add %s tracepoint to the list\n", kvm_events_tp[j]);
1422 free(tp);
1423 goto out;
1424 }
1425
1426 free(tp);
1427 }
1428
1429 err = 0;
1430
1431out:
1432 if (err) {
1433 perf_evlist__delete(evlist);
1434 evlist = NULL;
1435 }
1436
1437 return evlist;
1438}
1439
1440static int kvm_events_live(struct perf_kvm_stat *kvm,
1441 int argc, const char **argv)
1442{
1443 char errbuf[BUFSIZ];
1444 int err;
1445
1446 const struct option live_options[] = {
1447 OPT_STRING('p', "pid", &kvm->opts.target.pid, "pid",
1448 "record events on existing process id"),
Jiri Olsa994a1f72013-09-01 12:36:12 +02001449 OPT_CALLBACK('m', "mmap-pages", &kvm->opts.mmap_pages, "pages",
1450 "number of mmap data pages",
1451 perf_evlist__parse_mmap_pages),
David Ahern1afe1d12013-08-05 21:41:34 -04001452 OPT_INCR('v', "verbose", &verbose,
1453 "be more verbose (show counter open errors, etc)"),
1454 OPT_BOOLEAN('a', "all-cpus", &kvm->opts.target.system_wide,
1455 "system-wide collection from all CPUs"),
1456 OPT_UINTEGER('d', "display", &kvm->display_time,
1457 "time in seconds between display updates"),
1458 OPT_STRING(0, "event", &kvm->report_event, "report event",
1459 "event for reporting: vmexit, mmio, ioport"),
1460 OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
1461 "vcpu id to report"),
1462 OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
1463 "key for sorting: sample(sort by samples number)"
1464 " time (sort by avg time)"),
David Ahern70f7b4a2013-08-07 21:56:38 -04001465 OPT_U64(0, "duration", &kvm->duration,
1466 "show events other than HALT that take longer than duration usecs"),
David Ahern1afe1d12013-08-05 21:41:34 -04001467 OPT_END()
1468 };
1469 const char * const live_usage[] = {
1470 "perf kvm stat live [<options>]",
1471 NULL
1472 };
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001473 struct perf_data_file file = {
1474 .mode = PERF_DATA_MODE_WRITE,
1475 };
David Ahern1afe1d12013-08-05 21:41:34 -04001476
1477
1478 /* event handling */
1479 kvm->tool.sample = process_sample_event;
1480 kvm->tool.comm = perf_event__process_comm;
1481 kvm->tool.exit = perf_event__process_exit;
1482 kvm->tool.fork = perf_event__process_fork;
1483 kvm->tool.lost = process_lost_event;
1484 kvm->tool.ordered_samples = true;
1485 perf_tool__fill_defaults(&kvm->tool);
1486
1487 /* set defaults */
1488 kvm->display_time = 1;
1489 kvm->opts.user_interval = 1;
1490 kvm->opts.mmap_pages = 512;
1491 kvm->opts.target.uses_mmap = false;
1492 kvm->opts.target.uid_str = NULL;
1493 kvm->opts.target.uid = UINT_MAX;
1494
1495 symbol__init();
1496 disable_buildid_cache();
1497
1498 use_browser = 0;
1499 setup_browser(false);
1500
1501 if (argc) {
1502 argc = parse_options(argc, argv, live_options,
1503 live_usage, 0);
1504 if (argc)
1505 usage_with_options(live_usage, live_options);
1506 }
1507
David Ahern70f7b4a2013-08-07 21:56:38 -04001508 kvm->duration *= NSEC_PER_USEC; /* convert usec to nsec */
1509
David Ahern1afe1d12013-08-05 21:41:34 -04001510 /*
1511 * target related setups
1512 */
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001513 err = target__validate(&kvm->opts.target);
David Ahern1afe1d12013-08-05 21:41:34 -04001514 if (err) {
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001515 target__strerror(&kvm->opts.target, err, errbuf, BUFSIZ);
David Ahern1afe1d12013-08-05 21:41:34 -04001516 ui__warning("%s", errbuf);
1517 }
1518
Arnaldo Carvalho de Melo602ad872013-11-12 16:46:16 -03001519 if (target__none(&kvm->opts.target))
David Ahern1afe1d12013-08-05 21:41:34 -04001520 kvm->opts.target.system_wide = true;
1521
1522
1523 /*
1524 * generate the event list
1525 */
1526 kvm->evlist = kvm_live_event_list();
1527 if (kvm->evlist == NULL) {
1528 err = -1;
1529 goto out;
1530 }
1531
1532 symbol_conf.nr_events = kvm->evlist->nr_entries;
1533
1534 if (perf_evlist__create_maps(kvm->evlist, &kvm->opts.target) < 0)
1535 usage_with_options(live_usage, live_options);
1536
1537 /*
1538 * perf session
1539 */
Jiri Olsaf5fc1412013-10-15 16:27:32 +02001540 kvm->session = perf_session__new(&file, false, &kvm->tool);
David Ahern1afe1d12013-08-05 21:41:34 -04001541 if (kvm->session == NULL) {
1542 err = -ENOMEM;
1543 goto out;
1544 }
1545 kvm->session->evlist = kvm->evlist;
1546 perf_session__set_id_hdr_size(kvm->session);
Arnaldo Carvalho de Meloa33fbd52013-11-11 11:36:12 -03001547 machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
1548 kvm->evlist->threads, false);
David Ahern1afe1d12013-08-05 21:41:34 -04001549 err = kvm_live_open_events(kvm);
1550 if (err)
1551 goto out;
1552
1553 err = kvm_events_live_report(kvm);
1554
1555out:
1556 exit_browser(0);
1557
1558 if (kvm->session)
1559 perf_session__delete(kvm->session);
1560 kvm->session = NULL;
1561 if (kvm->evlist) {
1562 perf_evlist__delete_maps(kvm->evlist);
1563 perf_evlist__delete(kvm->evlist);
1564 }
1565
1566 return err;
1567}
David Ahern87419c92013-10-29 10:43:16 -06001568#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001569
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001570static void print_kvm_stat_usage(void)
1571{
1572 printf("Usage: perf kvm stat <command>\n\n");
1573
1574 printf("# Available commands:\n");
1575 printf("\trecord: record kvm events\n");
1576 printf("\treport: report statistical data of kvm events\n");
David Ahern1afe1d12013-08-05 21:41:34 -04001577 printf("\tlive: live reporting of statistical data of kvm events\n");
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001578
1579 printf("\nOtherwise, it is the alias of 'perf stat':\n");
1580}
1581
Xiao Guangrong37860632012-11-15 14:17:01 +08001582static int kvm_cmd_stat(const char *file_name, int argc, const char **argv)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001583{
Xiao Guangrong37860632012-11-15 14:17:01 +08001584 struct perf_kvm_stat kvm = {
1585 .file_name = file_name,
1586
1587 .trace_vcpu = -1,
1588 .report_event = "vmexit",
1589 .sort_key = "sample",
1590
1591 .exit_reasons = svm_exit_reasons,
1592 .exit_reasons_size = ARRAY_SIZE(svm_exit_reasons),
1593 .exit_reasons_isa = "SVM",
1594 };
1595
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001596 if (argc == 1) {
1597 print_kvm_stat_usage();
1598 goto perf_stat;
1599 }
1600
1601 if (!strncmp(argv[1], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001602 return kvm_events_record(&kvm, argc - 1, argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001603
1604 if (!strncmp(argv[1], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001605 return kvm_events_report(&kvm, argc - 1 , argv + 1);
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001606
David Ahern87419c92013-10-29 10:43:16 -06001607#ifdef HAVE_TIMERFD_SUPPORT
David Ahern1afe1d12013-08-05 21:41:34 -04001608 if (!strncmp(argv[1], "live", 4))
1609 return kvm_events_live(&kvm, argc - 1 , argv + 1);
David Ahern87419c92013-10-29 10:43:16 -06001610#endif
David Ahern1afe1d12013-08-05 21:41:34 -04001611
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001612perf_stat:
1613 return cmd_stat(argc, argv, NULL);
1614}
Xiao Guangrong73210902012-11-19 16:19:21 +08001615#endif
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001616
Xiao Guangrong37860632012-11-15 14:17:01 +08001617static int __cmd_record(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001618{
1619 int rec_argc, i = 0, j;
1620 const char **rec_argv;
1621
1622 rec_argc = argc + 2;
1623 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1624 rec_argv[i++] = strdup("record");
1625 rec_argv[i++] = strdup("-o");
Xiao Guangrong37860632012-11-15 14:17:01 +08001626 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001627 for (j = 1; j < argc; j++, i++)
1628 rec_argv[i] = argv[j];
1629
1630 BUG_ON(i != rec_argc);
1631
1632 return cmd_record(i, rec_argv, NULL);
1633}
1634
Xiao Guangrong37860632012-11-15 14:17:01 +08001635static int __cmd_report(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001636{
1637 int rec_argc, i = 0, j;
1638 const char **rec_argv;
1639
1640 rec_argc = argc + 2;
1641 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1642 rec_argv[i++] = strdup("report");
1643 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001644 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001645 for (j = 1; j < argc; j++, i++)
1646 rec_argv[i] = argv[j];
1647
1648 BUG_ON(i != rec_argc);
1649
1650 return cmd_report(i, rec_argv, NULL);
1651}
1652
Xiao Guangrong37860632012-11-15 14:17:01 +08001653static int
1654__cmd_buildid_list(const char *file_name, int argc, const char **argv)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001655{
1656 int rec_argc, i = 0, j;
1657 const char **rec_argv;
1658
1659 rec_argc = argc + 2;
1660 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1661 rec_argv[i++] = strdup("buildid-list");
1662 rec_argv[i++] = strdup("-i");
Xiao Guangrong37860632012-11-15 14:17:01 +08001663 rec_argv[i++] = strdup(file_name);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001664 for (j = 1; j < argc; j++, i++)
1665 rec_argv[i] = argv[j];
1666
1667 BUG_ON(i != rec_argc);
1668
1669 return cmd_buildid_list(i, rec_argv, NULL);
1670}
1671
Irina Tirdea1d037ca2012-09-11 01:15:03 +03001672int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001673{
Arnaldo Carvalho de Melo20914ce52012-12-19 10:59:29 -03001674 const char *file_name = NULL;
David Ahernde332ac2012-10-02 22:09:53 -06001675 const struct option kvm_options[] = {
Xiao Guangrong37860632012-11-15 14:17:01 +08001676 OPT_STRING('i', "input", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001677 "Input file name"),
Xiao Guangrong37860632012-11-15 14:17:01 +08001678 OPT_STRING('o', "output", &file_name, "file",
David Ahernde332ac2012-10-02 22:09:53 -06001679 "Output file name"),
1680 OPT_BOOLEAN(0, "guest", &perf_guest,
1681 "Collect guest os data"),
1682 OPT_BOOLEAN(0, "host", &perf_host,
1683 "Collect host os data"),
1684 OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory",
1685 "guest mount directory under which every guest os"
1686 " instance has a subdir"),
1687 OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name,
1688 "file", "file saving guest os vmlinux"),
1689 OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms,
1690 "file", "file saving guest os /proc/kallsyms"),
1691 OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
1692 "file", "file saving guest os /proc/modules"),
1693 OPT_END()
1694 };
1695
1696
1697 const char * const kvm_usage[] = {
1698 "perf kvm [<options>] {top|record|report|diff|buildid-list|stat}",
1699 NULL
1700 };
1701
Joerg Roedel1aed2672012-01-04 17:54:20 +01001702 perf_host = 0;
1703 perf_guest = 1;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001704
1705 argc = parse_options(argc, argv, kvm_options, kvm_usage,
1706 PARSE_OPT_STOP_AT_NON_OPTION);
1707 if (!argc)
1708 usage_with_options(kvm_usage, kvm_options);
1709
1710 if (!perf_host)
1711 perf_guest = 1;
1712
Xiao Guangrong37860632012-11-15 14:17:01 +08001713 if (!file_name) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001714 if (perf_host && !perf_guest)
Xiao Guangrong37860632012-11-15 14:17:01 +08001715 file_name = strdup("perf.data.host");
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001716 else if (!perf_host && perf_guest)
Xiao Guangrong37860632012-11-15 14:17:01 +08001717 file_name = strdup("perf.data.guest");
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001718 else
Xiao Guangrong37860632012-11-15 14:17:01 +08001719 file_name = strdup("perf.data.kvm");
David Ahernde332ac2012-10-02 22:09:53 -06001720
Xiao Guangrong37860632012-11-15 14:17:01 +08001721 if (!file_name) {
David Ahernde332ac2012-10-02 22:09:53 -06001722 pr_err("Failed to allocate memory for filename\n");
1723 return -ENOMEM;
1724 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001725 }
1726
1727 if (!strncmp(argv[0], "rec", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001728 return __cmd_record(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001729 else if (!strncmp(argv[0], "rep", 3))
Xiao Guangrong37860632012-11-15 14:17:01 +08001730 return __cmd_report(file_name, argc, argv);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001731 else if (!strncmp(argv[0], "diff", 4))
1732 return cmd_diff(argc, argv, NULL);
1733 else if (!strncmp(argv[0], "top", 3))
1734 return cmd_top(argc, argv, NULL);
1735 else if (!strncmp(argv[0], "buildid-list", 12))
Xiao Guangrong37860632012-11-15 14:17:01 +08001736 return __cmd_buildid_list(file_name, argc, argv);
Xiao Guangrong73210902012-11-19 16:19:21 +08001737#if defined(__i386__) || defined(__x86_64__)
Xiao Guangrongbcf6edc2012-09-17 16:31:15 +08001738 else if (!strncmp(argv[0], "stat", 4))
Xiao Guangrong37860632012-11-15 14:17:01 +08001739 return kvm_cmd_stat(file_name, argc, argv);
Xiao Guangrong73210902012-11-19 16:19:21 +08001740#endif
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001741 else
1742 usage_with_options(kvm_usage, kvm_options);
1743
1744 return 0;
1745}