blob: 80209df6cfe8df3267050c8bb64f5974748a8ce7 [file] [log] [blame]
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001#include "builtin.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02002#include "perf.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02003
4#include "util/util.h"
5#include "util/cache.h"
6#include "util/symbol.h"
7#include "util/thread.h"
8#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02009#include "util/session.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020010
11#include "util/parse-options.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020012#include "util/trace-event.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020013
Ingo Molnar0a02ad92009-09-11 12:12:54 +020014#include "util/debug.h"
15
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020016#include <sys/prctl.h>
Ingo Molnar0a02ad92009-09-11 12:12:54 +020017
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020018#include <semaphore.h>
19#include <pthread.h>
20#include <math.h>
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +020021
Ingo Molnarec156762009-09-11 12:12:54 +020022static char const *input_name = "perf.data";
Ingo Molnar0a02ad92009-09-11 12:12:54 +020023
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +020024static char default_sort_order[] = "avg, max, switch, runtime";
25static char *sort_order = default_sort_order;
26
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020027static int profile_cpu = -1;
28
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020029#define PR_SET_NAME 15 /* Set process name */
30#define MAX_CPUS 4096
Ingo Molnar0a02ad92009-09-11 12:12:54 +020031
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020032static u64 run_measurement_overhead;
33static u64 sleep_measurement_overhead;
Ingo Molnarec156762009-09-11 12:12:54 +020034
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020035#define COMM_LEN 20
36#define SYM_LEN 129
Ingo Molnarec156762009-09-11 12:12:54 +020037
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020038#define MAX_PID 65536
Ingo Molnarec156762009-09-11 12:12:54 +020039
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020040static unsigned long nr_tasks;
Ingo Molnarec156762009-09-11 12:12:54 +020041
mingo39aeb522009-09-14 20:04:48 +020042struct sched_atom;
Ingo Molnarec156762009-09-11 12:12:54 +020043
44struct task_desc {
45 unsigned long nr;
46 unsigned long pid;
47 char comm[COMM_LEN];
48
49 unsigned long nr_events;
50 unsigned long curr_event;
mingo39aeb522009-09-14 20:04:48 +020051 struct sched_atom **atoms;
Ingo Molnarec156762009-09-11 12:12:54 +020052
53 pthread_t thread;
54 sem_t sleep_sem;
55
56 sem_t ready_for_work;
57 sem_t work_done_sem;
58
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020059 u64 cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +020060};
61
62enum sched_event_type {
63 SCHED_EVENT_RUN,
64 SCHED_EVENT_SLEEP,
65 SCHED_EVENT_WAKEUP,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020066 SCHED_EVENT_MIGRATION,
Ingo Molnarec156762009-09-11 12:12:54 +020067};
68
mingo39aeb522009-09-14 20:04:48 +020069struct sched_atom {
Ingo Molnarec156762009-09-11 12:12:54 +020070 enum sched_event_type type;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020071 u64 timestamp;
72 u64 duration;
Ingo Molnarec156762009-09-11 12:12:54 +020073 unsigned long nr;
74 int specific_wait;
75 sem_t *wait_sem;
76 struct task_desc *wakee;
77};
78
79static struct task_desc *pid_to_task[MAX_PID];
80
81static struct task_desc **tasks;
82
83static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020084static u64 start_time;
Ingo Molnarec156762009-09-11 12:12:54 +020085
86static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
87
88static unsigned long nr_run_events;
89static unsigned long nr_sleep_events;
90static unsigned long nr_wakeup_events;
91
92static unsigned long nr_sleep_corrections;
93static unsigned long nr_run_events_optimized;
94
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020095static unsigned long targetless_wakeups;
96static unsigned long multitarget_wakeups;
97
98static u64 cpu_usage;
99static u64 runavg_cpu_usage;
100static u64 parent_cpu_usage;
101static u64 runavg_parent_cpu_usage;
102
103static unsigned long nr_runs;
104static u64 sum_runtime;
105static u64 sum_fluct;
106static u64 run_avg;
107
108static unsigned long replay_repeat = 10;
Ingo Molnarea57c4f2009-09-13 18:15:54 +0200109static unsigned long nr_timestamps;
Ingo Molnardc02bf72009-09-16 13:45:00 +0200110static unsigned long nr_unordered_timestamps;
111static unsigned long nr_state_machine_bugs;
Ingo Molnarc8a37752009-09-16 14:07:00 +0200112static unsigned long nr_context_switch_bugs;
Ingo Molnardc02bf72009-09-16 13:45:00 +0200113static unsigned long nr_events;
114static unsigned long nr_lost_chunks;
115static unsigned long nr_lost_events;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200116
117#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
118
119enum thread_state {
120 THREAD_SLEEPING = 0,
121 THREAD_WAIT_CPU,
122 THREAD_SCHED_IN,
123 THREAD_IGNORE
124};
125
126struct work_atom {
127 struct list_head list;
128 enum thread_state state;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200129 u64 sched_out_time;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200130 u64 wake_up_time;
131 u64 sched_in_time;
132 u64 runtime;
133};
134
mingo39aeb522009-09-14 20:04:48 +0200135struct work_atoms {
136 struct list_head work_list;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200137 struct thread *thread;
138 struct rb_node node;
139 u64 max_lat;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +0100140 u64 max_lat_at;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200141 u64 total_lat;
142 u64 nb_atoms;
143 u64 total_runtime;
144};
145
mingo39aeb522009-09-14 20:04:48 +0200146typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200147
148static struct rb_root atom_root, sorted_atom_root;
149
150static u64 all_runtime;
151static u64 all_count;
152
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200153
154static u64 get_nsecs(void)
155{
156 struct timespec ts;
157
158 clock_gettime(CLOCK_MONOTONIC, &ts);
159
160 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
161}
162
163static void burn_nsecs(u64 nsecs)
164{
165 u64 T0 = get_nsecs(), T1;
166
167 do {
168 T1 = get_nsecs();
169 } while (T1 + run_measurement_overhead < T0 + nsecs);
170}
171
172static void sleep_nsecs(u64 nsecs)
173{
174 struct timespec ts;
175
176 ts.tv_nsec = nsecs % 999999999;
177 ts.tv_sec = nsecs / 999999999;
178
179 nanosleep(&ts, NULL);
180}
181
182static void calibrate_run_measurement_overhead(void)
183{
184 u64 T0, T1, delta, min_delta = 1000000000ULL;
185 int i;
186
187 for (i = 0; i < 10; i++) {
188 T0 = get_nsecs();
189 burn_nsecs(0);
190 T1 = get_nsecs();
191 delta = T1-T0;
192 min_delta = min(min_delta, delta);
193 }
194 run_measurement_overhead = min_delta;
195
196 printf("run measurement overhead: %Ld nsecs\n", min_delta);
197}
198
199static void calibrate_sleep_measurement_overhead(void)
200{
201 u64 T0, T1, delta, min_delta = 1000000000ULL;
202 int i;
203
204 for (i = 0; i < 10; i++) {
205 T0 = get_nsecs();
206 sleep_nsecs(10000);
207 T1 = get_nsecs();
208 delta = T1-T0;
209 min_delta = min(min_delta, delta);
210 }
211 min_delta -= 10000;
212 sleep_measurement_overhead = min_delta;
213
214 printf("sleep measurement overhead: %Ld nsecs\n", min_delta);
215}
216
mingo39aeb522009-09-14 20:04:48 +0200217static struct sched_atom *
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200218get_new_event(struct task_desc *task, u64 timestamp)
Ingo Molnarec156762009-09-11 12:12:54 +0200219{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200220 struct sched_atom *event = zalloc(sizeof(*event));
Ingo Molnarec156762009-09-11 12:12:54 +0200221 unsigned long idx = task->nr_events;
222 size_t size;
223
224 event->timestamp = timestamp;
225 event->nr = idx;
226
227 task->nr_events++;
mingo39aeb522009-09-14 20:04:48 +0200228 size = sizeof(struct sched_atom *) * task->nr_events;
229 task->atoms = realloc(task->atoms, size);
230 BUG_ON(!task->atoms);
Ingo Molnarec156762009-09-11 12:12:54 +0200231
mingo39aeb522009-09-14 20:04:48 +0200232 task->atoms[idx] = event;
Ingo Molnarec156762009-09-11 12:12:54 +0200233
234 return event;
235}
236
mingo39aeb522009-09-14 20:04:48 +0200237static struct sched_atom *last_event(struct task_desc *task)
Ingo Molnarec156762009-09-11 12:12:54 +0200238{
239 if (!task->nr_events)
240 return NULL;
241
mingo39aeb522009-09-14 20:04:48 +0200242 return task->atoms[task->nr_events - 1];
Ingo Molnarec156762009-09-11 12:12:54 +0200243}
244
245static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200246add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
Ingo Molnarec156762009-09-11 12:12:54 +0200247{
mingo39aeb522009-09-14 20:04:48 +0200248 struct sched_atom *event, *curr_event = last_event(task);
Ingo Molnarec156762009-09-11 12:12:54 +0200249
250 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200251 * optimize an existing RUN event by merging this one
252 * to it:
253 */
Ingo Molnarec156762009-09-11 12:12:54 +0200254 if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
255 nr_run_events_optimized++;
256 curr_event->duration += duration;
257 return;
258 }
259
260 event = get_new_event(task, timestamp);
261
262 event->type = SCHED_EVENT_RUN;
263 event->duration = duration;
264
265 nr_run_events++;
266}
267
Ingo Molnarec156762009-09-11 12:12:54 +0200268static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200269add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
Ingo Molnarec156762009-09-11 12:12:54 +0200270 struct task_desc *wakee)
271{
mingo39aeb522009-09-14 20:04:48 +0200272 struct sched_atom *event, *wakee_event;
Ingo Molnarec156762009-09-11 12:12:54 +0200273
274 event = get_new_event(task, timestamp);
275 event->type = SCHED_EVENT_WAKEUP;
276 event->wakee = wakee;
277
278 wakee_event = last_event(wakee);
279 if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
280 targetless_wakeups++;
281 return;
282 }
283 if (wakee_event->wait_sem) {
284 multitarget_wakeups++;
285 return;
286 }
287
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200288 wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
Ingo Molnarec156762009-09-11 12:12:54 +0200289 sem_init(wakee_event->wait_sem, 0, 0);
290 wakee_event->specific_wait = 1;
291 event->wait_sem = wakee_event->wait_sem;
292
293 nr_wakeup_events++;
294}
295
296static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200297add_sched_event_sleep(struct task_desc *task, u64 timestamp,
Ingo Molnarad236fd2009-09-11 12:12:54 +0200298 u64 task_state __used)
Ingo Molnarec156762009-09-11 12:12:54 +0200299{
mingo39aeb522009-09-14 20:04:48 +0200300 struct sched_atom *event = get_new_event(task, timestamp);
Ingo Molnarec156762009-09-11 12:12:54 +0200301
302 event->type = SCHED_EVENT_SLEEP;
303
304 nr_sleep_events++;
305}
306
307static struct task_desc *register_pid(unsigned long pid, const char *comm)
308{
309 struct task_desc *task;
310
311 BUG_ON(pid >= MAX_PID);
312
313 task = pid_to_task[pid];
314
315 if (task)
316 return task;
317
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200318 task = zalloc(sizeof(*task));
Ingo Molnarec156762009-09-11 12:12:54 +0200319 task->pid = pid;
320 task->nr = nr_tasks;
321 strcpy(task->comm, comm);
322 /*
323 * every task starts in sleeping state - this gets ignored
324 * if there's no wakeup pointing to this sleep state:
325 */
326 add_sched_event_sleep(task, 0, 0);
327
328 pid_to_task[pid] = task;
329 nr_tasks++;
330 tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *));
331 BUG_ON(!tasks);
332 tasks[task->nr] = task;
333
Ingo Molnarad236fd2009-09-11 12:12:54 +0200334 if (verbose)
335 printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
Ingo Molnarec156762009-09-11 12:12:54 +0200336
337 return task;
338}
339
340
Ingo Molnarec156762009-09-11 12:12:54 +0200341static void print_task_traces(void)
342{
343 struct task_desc *task;
344 unsigned long i;
345
346 for (i = 0; i < nr_tasks; i++) {
347 task = tasks[i];
Ingo Molnarad236fd2009-09-11 12:12:54 +0200348 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
Ingo Molnarec156762009-09-11 12:12:54 +0200349 task->nr, task->comm, task->pid, task->nr_events);
350 }
351}
352
353static void add_cross_task_wakeups(void)
354{
355 struct task_desc *task1, *task2;
356 unsigned long i, j;
357
358 for (i = 0; i < nr_tasks; i++) {
359 task1 = tasks[i];
360 j = i + 1;
361 if (j == nr_tasks)
362 j = 0;
363 task2 = tasks[j];
364 add_sched_event_wakeup(task1, 0, task2);
365 }
366}
367
368static void
mingo39aeb522009-09-14 20:04:48 +0200369process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom)
Ingo Molnarec156762009-09-11 12:12:54 +0200370{
371 int ret = 0;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200372 u64 now;
Ingo Molnarec156762009-09-11 12:12:54 +0200373 long long delta;
374
375 now = get_nsecs();
mingo39aeb522009-09-14 20:04:48 +0200376 delta = start_time + atom->timestamp - now;
Ingo Molnarec156762009-09-11 12:12:54 +0200377
mingo39aeb522009-09-14 20:04:48 +0200378 switch (atom->type) {
Ingo Molnarec156762009-09-11 12:12:54 +0200379 case SCHED_EVENT_RUN:
mingo39aeb522009-09-14 20:04:48 +0200380 burn_nsecs(atom->duration);
Ingo Molnarec156762009-09-11 12:12:54 +0200381 break;
382 case SCHED_EVENT_SLEEP:
mingo39aeb522009-09-14 20:04:48 +0200383 if (atom->wait_sem)
384 ret = sem_wait(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200385 BUG_ON(ret);
386 break;
387 case SCHED_EVENT_WAKEUP:
mingo39aeb522009-09-14 20:04:48 +0200388 if (atom->wait_sem)
389 ret = sem_post(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200390 BUG_ON(ret);
391 break;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200392 case SCHED_EVENT_MIGRATION:
393 break;
Ingo Molnarec156762009-09-11 12:12:54 +0200394 default:
395 BUG_ON(1);
396 }
397}
398
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200399static u64 get_cpu_usage_nsec_parent(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200400{
401 struct rusage ru;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200402 u64 sum;
Ingo Molnarec156762009-09-11 12:12:54 +0200403 int err;
404
405 err = getrusage(RUSAGE_SELF, &ru);
406 BUG_ON(err);
407
408 sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
409 sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
410
411 return sum;
412}
413
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800414static int self_open_counters(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200415{
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800416 struct perf_event_attr attr;
417 int fd;
418
419 memset(&attr, 0, sizeof(attr));
420
421 attr.type = PERF_TYPE_SOFTWARE;
422 attr.config = PERF_COUNT_SW_TASK_CLOCK;
423
424 fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
425
426 if (fd < 0)
427 die("Error: sys_perf_event_open() syscall returned"
428 "with %d (%s)\n", fd, strerror(errno));
429 return fd;
430}
431
432static u64 get_cpu_usage_nsec_self(int fd)
433{
434 u64 runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200435 int ret;
436
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800437 ret = read(fd, &runtime, sizeof(runtime));
438 BUG_ON(ret != sizeof(runtime));
Ingo Molnarec156762009-09-11 12:12:54 +0200439
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800440 return runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200441}
442
443static void *thread_func(void *ctx)
444{
445 struct task_desc *this_task = ctx;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200446 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200447 unsigned long i, ret;
448 char comm2[22];
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800449 int fd;
Ingo Molnarec156762009-09-11 12:12:54 +0200450
Ingo Molnarec156762009-09-11 12:12:54 +0200451 sprintf(comm2, ":%s", this_task->comm);
452 prctl(PR_SET_NAME, comm2);
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800453 fd = self_open_counters();
Ingo Molnarec156762009-09-11 12:12:54 +0200454
455again:
456 ret = sem_post(&this_task->ready_for_work);
457 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200458 ret = pthread_mutex_lock(&start_work_mutex);
459 BUG_ON(ret);
460 ret = pthread_mutex_unlock(&start_work_mutex);
461 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200462
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800463 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200464
465 for (i = 0; i < this_task->nr_events; i++) {
466 this_task->curr_event = i;
mingo39aeb522009-09-14 20:04:48 +0200467 process_sched_event(this_task, this_task->atoms[i]);
Ingo Molnarec156762009-09-11 12:12:54 +0200468 }
469
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800470 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200471 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
Ingo Molnarec156762009-09-11 12:12:54 +0200472 ret = sem_post(&this_task->work_done_sem);
473 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200474
475 ret = pthread_mutex_lock(&work_done_wait_mutex);
476 BUG_ON(ret);
477 ret = pthread_mutex_unlock(&work_done_wait_mutex);
478 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200479
480 goto again;
481}
482
483static void create_tasks(void)
484{
485 struct task_desc *task;
486 pthread_attr_t attr;
487 unsigned long i;
488 int err;
489
490 err = pthread_attr_init(&attr);
491 BUG_ON(err);
492 err = pthread_attr_setstacksize(&attr, (size_t)(16*1024));
493 BUG_ON(err);
494 err = pthread_mutex_lock(&start_work_mutex);
495 BUG_ON(err);
496 err = pthread_mutex_lock(&work_done_wait_mutex);
497 BUG_ON(err);
498 for (i = 0; i < nr_tasks; i++) {
499 task = tasks[i];
500 sem_init(&task->sleep_sem, 0, 0);
501 sem_init(&task->ready_for_work, 0, 0);
502 sem_init(&task->work_done_sem, 0, 0);
503 task->curr_event = 0;
504 err = pthread_create(&task->thread, &attr, thread_func, task);
505 BUG_ON(err);
506 }
507}
508
Ingo Molnarec156762009-09-11 12:12:54 +0200509static void wait_for_tasks(void)
510{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200511 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200512 struct task_desc *task;
513 unsigned long i, ret;
514
Ingo Molnarec156762009-09-11 12:12:54 +0200515 start_time = get_nsecs();
Ingo Molnarec156762009-09-11 12:12:54 +0200516 cpu_usage = 0;
517 pthread_mutex_unlock(&work_done_wait_mutex);
518
519 for (i = 0; i < nr_tasks; i++) {
520 task = tasks[i];
521 ret = sem_wait(&task->ready_for_work);
522 BUG_ON(ret);
523 sem_init(&task->ready_for_work, 0, 0);
524 }
525 ret = pthread_mutex_lock(&work_done_wait_mutex);
526 BUG_ON(ret);
527
528 cpu_usage_0 = get_cpu_usage_nsec_parent();
529
530 pthread_mutex_unlock(&start_work_mutex);
531
Ingo Molnarec156762009-09-11 12:12:54 +0200532 for (i = 0; i < nr_tasks; i++) {
533 task = tasks[i];
534 ret = sem_wait(&task->work_done_sem);
535 BUG_ON(ret);
536 sem_init(&task->work_done_sem, 0, 0);
537 cpu_usage += task->cpu_usage;
538 task->cpu_usage = 0;
539 }
540
541 cpu_usage_1 = get_cpu_usage_nsec_parent();
542 if (!runavg_cpu_usage)
543 runavg_cpu_usage = cpu_usage;
544 runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10;
545
546 parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
547 if (!runavg_parent_cpu_usage)
548 runavg_parent_cpu_usage = parent_cpu_usage;
549 runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 +
550 parent_cpu_usage)/10;
551
552 ret = pthread_mutex_lock(&start_work_mutex);
553 BUG_ON(ret);
554
555 for (i = 0; i < nr_tasks; i++) {
556 task = tasks[i];
557 sem_init(&task->sleep_sem, 0, 0);
558 task->curr_event = 0;
559 }
560}
561
Ingo Molnarec156762009-09-11 12:12:54 +0200562static void run_one_test(void)
563{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200564 u64 T0, T1, delta, avg_delta, fluct, std_dev;
Ingo Molnarec156762009-09-11 12:12:54 +0200565
566 T0 = get_nsecs();
567 wait_for_tasks();
568 T1 = get_nsecs();
569
570 delta = T1 - T0;
571 sum_runtime += delta;
572 nr_runs++;
573
574 avg_delta = sum_runtime / nr_runs;
575 if (delta < avg_delta)
576 fluct = avg_delta - delta;
577 else
578 fluct = delta - avg_delta;
579 sum_fluct += fluct;
580 std_dev = sum_fluct / nr_runs / sqrt(nr_runs);
581 if (!run_avg)
582 run_avg = delta;
583 run_avg = (run_avg*9 + delta)/10;
584
Ingo Molnarad236fd2009-09-11 12:12:54 +0200585 printf("#%-3ld: %0.3f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200586 nr_runs, (double)delta/1000000.0);
587
Ingo Molnarad236fd2009-09-11 12:12:54 +0200588 printf("ravg: %0.2f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200589 (double)run_avg/1e6);
590
Ingo Molnarad236fd2009-09-11 12:12:54 +0200591 printf("cpu: %0.2f / %0.2f",
Ingo Molnarec156762009-09-11 12:12:54 +0200592 (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
593
594#if 0
595 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200596 * rusage statistics done by the parent, these are less
597 * accurate than the sum_exec_runtime based statistics:
598 */
Ingo Molnarad236fd2009-09-11 12:12:54 +0200599 printf(" [%0.2f / %0.2f]",
Ingo Molnarec156762009-09-11 12:12:54 +0200600 (double)parent_cpu_usage/1e6,
601 (double)runavg_parent_cpu_usage/1e6);
602#endif
603
Ingo Molnarad236fd2009-09-11 12:12:54 +0200604 printf("\n");
Ingo Molnarec156762009-09-11 12:12:54 +0200605
606 if (nr_sleep_corrections)
Ingo Molnarad236fd2009-09-11 12:12:54 +0200607 printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
Ingo Molnarec156762009-09-11 12:12:54 +0200608 nr_sleep_corrections = 0;
609}
610
611static void test_calibrations(void)
612{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200613 u64 T0, T1;
Ingo Molnarec156762009-09-11 12:12:54 +0200614
615 T0 = get_nsecs();
616 burn_nsecs(1e6);
617 T1 = get_nsecs();
618
Ingo Molnarad236fd2009-09-11 12:12:54 +0200619 printf("the run test took %Ld nsecs\n", T1-T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200620
621 T0 = get_nsecs();
622 sleep_nsecs(1e6);
623 T1 = get_nsecs();
624
Ingo Molnarad236fd2009-09-11 12:12:54 +0200625 printf("the sleep test took %Ld nsecs\n", T1-T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200626}
627
Frederic Weisbecker46538812009-09-12 02:43:45 +0200628#define FILL_FIELD(ptr, field, event, data) \
629 ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
630
631#define FILL_ARRAY(ptr, array, event, data) \
632do { \
633 void *__array = raw_field_ptr(event, #array, data); \
634 memcpy(ptr.array, __array, sizeof(ptr.array)); \
635} while(0)
636
637#define FILL_COMMON_FIELDS(ptr, event, data) \
638do { \
639 FILL_FIELD(ptr, common_type, event, data); \
640 FILL_FIELD(ptr, common_flags, event, data); \
641 FILL_FIELD(ptr, common_preempt_count, event, data); \
642 FILL_FIELD(ptr, common_pid, event, data); \
643 FILL_FIELD(ptr, common_tgid, event, data); \
644} while (0)
645
Ingo Molnarfbf94822009-09-11 12:12:54 +0200646
Ingo Molnarec156762009-09-11 12:12:54 +0200647
Ingo Molnarfbf94822009-09-11 12:12:54 +0200648struct trace_switch_event {
649 u32 size;
650
651 u16 common_type;
652 u8 common_flags;
653 u8 common_preempt_count;
654 u32 common_pid;
655 u32 common_tgid;
656
657 char prev_comm[16];
658 u32 prev_pid;
659 u32 prev_prio;
660 u64 prev_state;
661 char next_comm[16];
662 u32 next_pid;
663 u32 next_prio;
664};
665
mingo39aeb522009-09-14 20:04:48 +0200666struct trace_runtime_event {
667 u32 size;
668
669 u16 common_type;
670 u8 common_flags;
671 u8 common_preempt_count;
672 u32 common_pid;
673 u32 common_tgid;
674
675 char comm[16];
676 u32 pid;
677 u64 runtime;
678 u64 vruntime;
679};
Ingo Molnarfbf94822009-09-11 12:12:54 +0200680
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200681struct trace_wakeup_event {
682 u32 size;
683
684 u16 common_type;
685 u8 common_flags;
686 u8 common_preempt_count;
687 u32 common_pid;
688 u32 common_tgid;
689
690 char comm[16];
691 u32 pid;
692
693 u32 prio;
694 u32 success;
695 u32 cpu;
696};
697
698struct trace_fork_event {
699 u32 size;
700
701 u16 common_type;
702 u8 common_flags;
703 u8 common_preempt_count;
704 u32 common_pid;
705 u32 common_tgid;
706
707 char parent_comm[16];
708 u32 parent_pid;
709 char child_comm[16];
710 u32 child_pid;
711};
712
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200713struct trace_migrate_task_event {
714 u32 size;
715
716 u16 common_type;
717 u8 common_flags;
718 u8 common_preempt_count;
719 u32 common_pid;
720 u32 common_tgid;
721
722 char comm[16];
723 u32 pid;
724
725 u32 prio;
726 u32 cpu;
727};
728
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200729struct trace_sched_handler {
730 void (*switch_event)(struct trace_switch_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200731 struct perf_session *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200732 struct event *,
733 int cpu,
734 u64 timestamp,
735 struct thread *thread);
736
mingo39aeb522009-09-14 20:04:48 +0200737 void (*runtime_event)(struct trace_runtime_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200738 struct perf_session *,
mingo39aeb522009-09-14 20:04:48 +0200739 struct event *,
740 int cpu,
741 u64 timestamp,
742 struct thread *thread);
743
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200744 void (*wakeup_event)(struct trace_wakeup_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200745 struct perf_session *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200746 struct event *,
747 int cpu,
748 u64 timestamp,
749 struct thread *thread);
750
751 void (*fork_event)(struct trace_fork_event *,
752 struct event *,
753 int cpu,
754 u64 timestamp,
755 struct thread *thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200756
757 void (*migrate_task_event)(struct trace_migrate_task_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200758 struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200759 struct event *,
760 int cpu,
761 u64 timestamp,
762 struct thread *thread);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200763};
764
Ingo Molnarfbf94822009-09-11 12:12:54 +0200765
766static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200767replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200768 struct perf_session *session __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200769 struct event *event,
770 int cpu __used,
771 u64 timestamp __used,
772 struct thread *thread __used)
Ingo Molnarec156762009-09-11 12:12:54 +0200773{
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200774 struct task_desc *waker, *wakee;
775
776 if (verbose) {
777 printf("sched_wakeup event %p\n", event);
778
779 printf(" ... pid %d woke up %s/%d\n",
780 wakeup_event->common_pid,
781 wakeup_event->comm,
782 wakeup_event->pid);
783 }
784
785 waker = register_pid(wakeup_event->common_pid, "<unknown>");
786 wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
787
788 add_sched_event_wakeup(waker, timestamp, wakee);
789}
790
Ingo Molnard1153382009-09-14 18:22:53 +0200791static u64 cpu_last_switched[MAX_CPUS];
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200792
793static void
794replay_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200795 struct perf_session *session __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200796 struct event *event,
797 int cpu,
798 u64 timestamp,
799 struct thread *thread __used)
800{
Ingo Molnarfbf94822009-09-11 12:12:54 +0200801 struct task_desc *prev, *next;
802 u64 timestamp0;
803 s64 delta;
804
Ingo Molnarad236fd2009-09-11 12:12:54 +0200805 if (verbose)
806 printf("sched_switch event %p\n", event);
807
Ingo Molnarfbf94822009-09-11 12:12:54 +0200808 if (cpu >= MAX_CPUS || cpu < 0)
809 return;
810
811 timestamp0 = cpu_last_switched[cpu];
812 if (timestamp0)
813 delta = timestamp - timestamp0;
814 else
815 delta = 0;
816
817 if (delta < 0)
818 die("hm, delta: %Ld < 0 ?\n", delta);
819
Ingo Molnarad236fd2009-09-11 12:12:54 +0200820 if (verbose) {
821 printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n",
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200822 switch_event->prev_comm, switch_event->prev_pid,
823 switch_event->next_comm, switch_event->next_pid,
Ingo Molnarad236fd2009-09-11 12:12:54 +0200824 delta);
825 }
Ingo Molnarfbf94822009-09-11 12:12:54 +0200826
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200827 prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
828 next = register_pid(switch_event->next_pid, switch_event->next_comm);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200829
830 cpu_last_switched[cpu] = timestamp;
831
832 add_sched_event_run(prev, timestamp, delta);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200833 add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200834}
835
Ingo Molnarfbf94822009-09-11 12:12:54 +0200836
837static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200838replay_fork_event(struct trace_fork_event *fork_event,
839 struct event *event,
840 int cpu __used,
841 u64 timestamp __used,
842 struct thread *thread __used)
843{
844 if (verbose) {
845 printf("sched_fork event %p\n", event);
846 printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid);
847 printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid);
848 }
849 register_pid(fork_event->parent_pid, fork_event->parent_comm);
850 register_pid(fork_event->child_pid, fork_event->child_comm);
851}
852
853static struct trace_sched_handler replay_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +0200854 .wakeup_event = replay_wakeup_event,
855 .switch_event = replay_switch_event,
856 .fork_event = replay_fork_event,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200857};
858
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200859struct sort_dimension {
860 const char *name;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200861 sort_fn_t cmp;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200862 struct list_head list;
863};
864
865static LIST_HEAD(cmp_pid);
866
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200867static int
mingo39aeb522009-09-14 20:04:48 +0200868thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200869{
870 struct sort_dimension *sort;
871 int ret = 0;
872
Ingo Molnarb5fae122009-09-11 12:12:54 +0200873 BUG_ON(list_empty(list));
874
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200875 list_for_each_entry(sort, list, list) {
876 ret = sort->cmp(l, r);
877 if (ret)
878 return ret;
879 }
880
881 return ret;
882}
883
mingo39aeb522009-09-14 20:04:48 +0200884static struct work_atoms *
Ingo Molnarb5fae122009-09-11 12:12:54 +0200885thread_atoms_search(struct rb_root *root, struct thread *thread,
886 struct list_head *sort_list)
887{
888 struct rb_node *node = root->rb_node;
mingo39aeb522009-09-14 20:04:48 +0200889 struct work_atoms key = { .thread = thread };
Ingo Molnarb5fae122009-09-11 12:12:54 +0200890
891 while (node) {
mingo39aeb522009-09-14 20:04:48 +0200892 struct work_atoms *atoms;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200893 int cmp;
894
mingo39aeb522009-09-14 20:04:48 +0200895 atoms = container_of(node, struct work_atoms, node);
Ingo Molnarb5fae122009-09-11 12:12:54 +0200896
897 cmp = thread_lat_cmp(sort_list, &key, atoms);
898 if (cmp > 0)
899 node = node->rb_left;
900 else if (cmp < 0)
901 node = node->rb_right;
902 else {
903 BUG_ON(thread != atoms->thread);
904 return atoms;
905 }
906 }
907 return NULL;
908}
909
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200910static void
mingo39aeb522009-09-14 20:04:48 +0200911__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200912 struct list_head *sort_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200913{
914 struct rb_node **new = &(root->rb_node), *parent = NULL;
915
916 while (*new) {
mingo39aeb522009-09-14 20:04:48 +0200917 struct work_atoms *this;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200918 int cmp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200919
mingo39aeb522009-09-14 20:04:48 +0200920 this = container_of(*new, struct work_atoms, node);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200921 parent = *new;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200922
923 cmp = thread_lat_cmp(sort_list, data, this);
924
925 if (cmp > 0)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200926 new = &((*new)->rb_left);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200927 else
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200928 new = &((*new)->rb_right);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200929 }
930
931 rb_link_node(&data->node, parent, new);
932 rb_insert_color(&data->node, root);
933}
934
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200935static void thread_atoms_insert(struct thread *thread)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200936{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200937 struct work_atoms *atoms = zalloc(sizeof(*atoms));
Frederic Weisbecker17562202009-09-12 23:11:32 +0200938 if (!atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200939 die("No memory");
940
Frederic Weisbecker17562202009-09-12 23:11:32 +0200941 atoms->thread = thread;
mingo39aeb522009-09-14 20:04:48 +0200942 INIT_LIST_HEAD(&atoms->work_list);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200943 __thread_latency_insert(&atom_root, atoms, &cmp_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200944}
945
946static void
947latency_fork_event(struct trace_fork_event *fork_event __used,
948 struct event *event __used,
949 int cpu __used,
950 u64 timestamp __used,
951 struct thread *thread __used)
952{
953 /* should insert the newcomer */
954}
955
Ingo Molnarea92ed52009-09-12 10:08:34 +0200956__used
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200957static char sched_out_state(struct trace_switch_event *switch_event)
958{
959 const char *str = TASK_STATE_TO_CHAR_STR;
960
961 return str[switch_event->prev_state];
962}
963
964static void
mingo39aeb522009-09-14 20:04:48 +0200965add_sched_out_event(struct work_atoms *atoms,
966 char run_state,
967 u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200968{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200969 struct work_atom *atom = zalloc(sizeof(*atom));
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200970 if (!atom)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200971 die("Non memory");
972
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200973 atom->sched_out_time = timestamp;
974
mingo39aeb522009-09-14 20:04:48 +0200975 if (run_state == 'R') {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200976 atom->state = THREAD_WAIT_CPU;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200977 atom->wake_up_time = atom->sched_out_time;
Frederic Weisbeckerc6ced612009-09-13 00:46:19 +0200978 }
979
mingo39aeb522009-09-14 20:04:48 +0200980 list_add_tail(&atom->list, &atoms->work_list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200981}
982
983static void
mingo39aeb522009-09-14 20:04:48 +0200984add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used)
985{
986 struct work_atom *atom;
987
988 BUG_ON(list_empty(&atoms->work_list));
989
990 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
991
992 atom->runtime += delta;
993 atoms->total_runtime += delta;
994}
995
996static void
997add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200998{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200999 struct work_atom *atom;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001000 u64 delta;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001001
mingo39aeb522009-09-14 20:04:48 +02001002 if (list_empty(&atoms->work_list))
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001003 return;
1004
mingo39aeb522009-09-14 20:04:48 +02001005 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001006
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001007 if (atom->state != THREAD_WAIT_CPU)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001008 return;
1009
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001010 if (timestamp < atom->wake_up_time) {
1011 atom->state = THREAD_IGNORE;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001012 return;
1013 }
1014
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001015 atom->state = THREAD_SCHED_IN;
1016 atom->sched_in_time = timestamp;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001017
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001018 delta = atom->sched_in_time - atom->wake_up_time;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001019 atoms->total_lat += delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001020 if (delta > atoms->max_lat) {
Frederic Weisbecker66685672009-09-13 01:56:25 +02001021 atoms->max_lat = delta;
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001022 atoms->max_lat_at = timestamp;
1023 }
Frederic Weisbecker66685672009-09-13 01:56:25 +02001024 atoms->nb_atoms++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001025}
1026
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001027static void
1028latency_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001029 struct perf_session *session,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001030 struct event *event __used,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001031 int cpu,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001032 u64 timestamp,
1033 struct thread *thread __used)
1034{
mingo39aeb522009-09-14 20:04:48 +02001035 struct work_atoms *out_events, *in_events;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001036 struct thread *sched_out, *sched_in;
Ingo Molnarea92ed52009-09-12 10:08:34 +02001037 u64 timestamp0;
1038 s64 delta;
1039
mingo39aeb522009-09-14 20:04:48 +02001040 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001041
1042 timestamp0 = cpu_last_switched[cpu];
1043 cpu_last_switched[cpu] = timestamp;
1044 if (timestamp0)
1045 delta = timestamp - timestamp0;
1046 else
1047 delta = 0;
1048
1049 if (delta < 0)
1050 die("hm, delta: %Ld < 0 ?\n", delta);
1051
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001052
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001053 sched_out = perf_session__findnew(session, switch_event->prev_pid);
1054 sched_in = perf_session__findnew(session, switch_event->next_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001055
mingo39aeb522009-09-14 20:04:48 +02001056 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1057 if (!out_events) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001058 thread_atoms_insert(sched_out);
mingo39aeb522009-09-14 20:04:48 +02001059 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1060 if (!out_events)
1061 die("out-event: Internal tree error");
1062 }
1063 add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
1064
1065 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1066 if (!in_events) {
1067 thread_atoms_insert(sched_in);
1068 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1069 if (!in_events)
1070 die("in-event: Internal tree error");
1071 /*
1072 * Take came in we have not heard about yet,
1073 * add in an initial atom in runnable state:
1074 */
1075 add_sched_out_event(in_events, 'R', timestamp);
1076 }
1077 add_sched_in_event(in_events, timestamp);
1078}
1079
1080static void
1081latency_runtime_event(struct trace_runtime_event *runtime_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001082 struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001083 struct event *event __used,
1084 int cpu,
1085 u64 timestamp,
1086 struct thread *this_thread __used)
1087{
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001088 struct thread *thread = perf_session__findnew(session, runtime_event->pid);
Arnaldo Carvalho de Melod5b889f2009-10-13 11:16:29 -03001089 struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001090
1091 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
mingo39aeb522009-09-14 20:04:48 +02001092 if (!atoms) {
1093 thread_atoms_insert(thread);
1094 atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
1095 if (!atoms)
1096 die("in-event: Internal tree error");
1097 add_sched_out_event(atoms, 'R', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001098 }
1099
mingo39aeb522009-09-14 20:04:48 +02001100 add_runtime_event(atoms, runtime_event->runtime, timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001101}
1102
1103static void
1104latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001105 struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001106 struct event *__event __used,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001107 int cpu __used,
1108 u64 timestamp,
1109 struct thread *thread __used)
1110{
mingo39aeb522009-09-14 20:04:48 +02001111 struct work_atoms *atoms;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001112 struct work_atom *atom;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001113 struct thread *wakee;
1114
1115 /* Note for later, it may be interesting to observe the failing cases */
1116 if (!wakeup_event->success)
1117 return;
1118
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001119 wakee = perf_session__findnew(session, wakeup_event->pid);
Ingo Molnarb5fae122009-09-11 12:12:54 +02001120 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
Frederic Weisbecker17562202009-09-12 23:11:32 +02001121 if (!atoms) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001122 thread_atoms_insert(wakee);
mingo39aeb522009-09-14 20:04:48 +02001123 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
1124 if (!atoms)
1125 die("wakeup-event: Internal tree error");
1126 add_sched_out_event(atoms, 'S', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001127 }
1128
mingo39aeb522009-09-14 20:04:48 +02001129 BUG_ON(list_empty(&atoms->work_list));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001130
mingo39aeb522009-09-14 20:04:48 +02001131 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001132
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001133 /*
1134 * You WILL be missing events if you've recorded only
1135 * one CPU, or are only looking at only one, so don't
1136 * make useless noise.
1137 */
1138 if (profile_cpu == -1 && atom->state != THREAD_SLEEPING)
Ingo Molnardc02bf72009-09-16 13:45:00 +02001139 nr_state_machine_bugs++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001140
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001141 nr_timestamps++;
1142 if (atom->sched_out_time > timestamp) {
Ingo Molnardc02bf72009-09-16 13:45:00 +02001143 nr_unordered_timestamps++;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001144 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001145 }
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001146
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001147 atom->state = THREAD_WAIT_CPU;
1148 atom->wake_up_time = timestamp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001149}
1150
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001151static void
1152latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001153 struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001154 struct event *__event __used,
1155 int cpu __used,
1156 u64 timestamp,
1157 struct thread *thread __used)
1158{
1159 struct work_atoms *atoms;
1160 struct work_atom *atom;
1161 struct thread *migrant;
1162
1163 /*
1164 * Only need to worry about migration when profiling one CPU.
1165 */
1166 if (profile_cpu == -1)
1167 return;
1168
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001169 migrant = perf_session__findnew(session, migrate_task_event->pid);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001170 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1171 if (!atoms) {
1172 thread_atoms_insert(migrant);
1173 register_pid(migrant->pid, migrant->comm);
1174 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1175 if (!atoms)
1176 die("migration-event: Internal tree error");
1177 add_sched_out_event(atoms, 'R', timestamp);
1178 }
1179
1180 BUG_ON(list_empty(&atoms->work_list));
1181
1182 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1183 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1184
1185 nr_timestamps++;
1186
1187 if (atom->sched_out_time > timestamp)
1188 nr_unordered_timestamps++;
1189}
1190
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001191static struct trace_sched_handler lat_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +02001192 .wakeup_event = latency_wakeup_event,
1193 .switch_event = latency_switch_event,
mingo39aeb522009-09-14 20:04:48 +02001194 .runtime_event = latency_runtime_event,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001195 .fork_event = latency_fork_event,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001196 .migrate_task_event = latency_migrate_task_event,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001197};
1198
mingo39aeb522009-09-14 20:04:48 +02001199static void output_lat_thread(struct work_atoms *work_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001200{
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001201 int i;
1202 int ret;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001203 u64 avg;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001204
mingo39aeb522009-09-14 20:04:48 +02001205 if (!work_list->nb_atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001206 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001207 /*
1208 * Ignore idle threads:
1209 */
Ingo Molnar80ed0982009-09-16 14:12:36 +02001210 if (!strcmp(work_list->thread->comm, "swapper"))
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001211 return;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001212
mingo39aeb522009-09-14 20:04:48 +02001213 all_runtime += work_list->total_runtime;
1214 all_count += work_list->nb_atoms;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001215
Ingo Molnar80ed0982009-09-16 14:12:36 +02001216 ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001217
mingo08f69e62009-09-14 18:30:44 +02001218 for (i = 0; i < 24 - ret; i++)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001219 printf(" ");
1220
mingo39aeb522009-09-14 20:04:48 +02001221 avg = work_list->total_lat / work_list->nb_atoms;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001222
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001223 printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n",
mingo39aeb522009-09-14 20:04:48 +02001224 (double)work_list->total_runtime / 1e6,
1225 work_list->nb_atoms, (double)avg / 1e6,
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001226 (double)work_list->max_lat / 1e6,
1227 (double)work_list->max_lat_at / 1e9);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001228}
1229
mingo39aeb522009-09-14 20:04:48 +02001230static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001231{
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001232 if (l->thread->pid < r->thread->pid)
1233 return -1;
1234 if (l->thread->pid > r->thread->pid)
1235 return 1;
1236
1237 return 0;
1238}
1239
1240static struct sort_dimension pid_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001241 .name = "pid",
1242 .cmp = pid_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001243};
1244
mingo39aeb522009-09-14 20:04:48 +02001245static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001246{
1247 u64 avgl, avgr;
1248
1249 if (!l->nb_atoms)
1250 return -1;
1251
1252 if (!r->nb_atoms)
1253 return 1;
1254
1255 avgl = l->total_lat / l->nb_atoms;
1256 avgr = r->total_lat / r->nb_atoms;
1257
1258 if (avgl < avgr)
1259 return -1;
1260 if (avgl > avgr)
1261 return 1;
1262
1263 return 0;
1264}
1265
1266static struct sort_dimension avg_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001267 .name = "avg",
1268 .cmp = avg_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001269};
1270
mingo39aeb522009-09-14 20:04:48 +02001271static int max_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001272{
1273 if (l->max_lat < r->max_lat)
1274 return -1;
1275 if (l->max_lat > r->max_lat)
1276 return 1;
1277
1278 return 0;
1279}
1280
1281static struct sort_dimension max_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001282 .name = "max",
1283 .cmp = max_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001284};
1285
mingo39aeb522009-09-14 20:04:48 +02001286static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001287{
1288 if (l->nb_atoms < r->nb_atoms)
1289 return -1;
1290 if (l->nb_atoms > r->nb_atoms)
1291 return 1;
1292
1293 return 0;
1294}
1295
1296static struct sort_dimension switch_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001297 .name = "switch",
1298 .cmp = switch_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001299};
1300
mingo39aeb522009-09-14 20:04:48 +02001301static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001302{
1303 if (l->total_runtime < r->total_runtime)
1304 return -1;
1305 if (l->total_runtime > r->total_runtime)
1306 return 1;
1307
1308 return 0;
1309}
1310
1311static struct sort_dimension runtime_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001312 .name = "runtime",
1313 .cmp = runtime_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001314};
1315
1316static struct sort_dimension *available_sorts[] = {
1317 &pid_sort_dimension,
1318 &avg_sort_dimension,
1319 &max_sort_dimension,
1320 &switch_sort_dimension,
1321 &runtime_sort_dimension,
1322};
1323
1324#define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
1325
1326static LIST_HEAD(sort_list);
1327
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001328static int sort_dimension__add(const char *tok, struct list_head *list)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001329{
1330 int i;
1331
1332 for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
1333 if (!strcmp(available_sorts[i]->name, tok)) {
1334 list_add_tail(&available_sorts[i]->list, list);
1335
1336 return 0;
1337 }
1338 }
1339
1340 return -1;
1341}
1342
1343static void setup_sorting(void);
1344
1345static void sort_lat(void)
1346{
1347 struct rb_node *node;
1348
1349 for (;;) {
mingo39aeb522009-09-14 20:04:48 +02001350 struct work_atoms *data;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001351 node = rb_first(&atom_root);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001352 if (!node)
1353 break;
1354
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001355 rb_erase(node, &atom_root);
mingo39aeb522009-09-14 20:04:48 +02001356 data = rb_entry(node, struct work_atoms, node);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001357 __thread_latency_insert(&sorted_atom_root, data, &sort_list);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001358 }
1359}
1360
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001361static struct trace_sched_handler *trace_handler;
1362
1363static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001364process_sched_wakeup_event(void *data, struct perf_session *session,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001365 struct event *event,
1366 int cpu __used,
1367 u64 timestamp __used,
1368 struct thread *thread __used)
1369{
1370 struct trace_wakeup_event wakeup_event;
1371
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001372 FILL_COMMON_FIELDS(wakeup_event, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001373
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001374 FILL_ARRAY(wakeup_event, comm, event, data);
1375 FILL_FIELD(wakeup_event, pid, event, data);
1376 FILL_FIELD(wakeup_event, prio, event, data);
1377 FILL_FIELD(wakeup_event, success, event, data);
1378 FILL_FIELD(wakeup_event, cpu, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001379
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001380 if (trace_handler->wakeup_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001381 trace_handler->wakeup_event(&wakeup_event, session, event,
1382 cpu, timestamp, thread);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001383}
1384
Ingo Molnarc8a37752009-09-16 14:07:00 +02001385/*
1386 * Track the current task - that way we can know whether there's any
1387 * weird events, such as a task being switched away that is not current.
1388 */
Ingo Molnar40749d02009-09-17 18:24:55 +02001389static int max_cpu;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001390
Ingo Molnarc8a37752009-09-16 14:07:00 +02001391static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 };
1392
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001393static struct thread *curr_thread[MAX_CPUS];
1394
1395static char next_shortname1 = 'A';
1396static char next_shortname2 = '0';
1397
1398static void
1399map_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001400 struct perf_session *session,
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001401 struct event *event __used,
1402 int this_cpu,
1403 u64 timestamp,
1404 struct thread *thread __used)
1405{
1406 struct thread *sched_out, *sched_in;
1407 int new_shortname;
1408 u64 timestamp0;
1409 s64 delta;
1410 int cpu;
1411
1412 BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
1413
1414 if (this_cpu > max_cpu)
1415 max_cpu = this_cpu;
1416
1417 timestamp0 = cpu_last_switched[this_cpu];
1418 cpu_last_switched[this_cpu] = timestamp;
1419 if (timestamp0)
1420 delta = timestamp - timestamp0;
1421 else
1422 delta = 0;
1423
1424 if (delta < 0)
1425 die("hm, delta: %Ld < 0 ?\n", delta);
1426
1427
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001428 sched_out = perf_session__findnew(session, switch_event->prev_pid);
1429 sched_in = perf_session__findnew(session, switch_event->next_pid);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001430
1431 curr_thread[this_cpu] = sched_in;
1432
1433 printf(" ");
1434
1435 new_shortname = 0;
1436 if (!sched_in->shortname[0]) {
1437 sched_in->shortname[0] = next_shortname1;
1438 sched_in->shortname[1] = next_shortname2;
1439
1440 if (next_shortname1 < 'Z') {
1441 next_shortname1++;
1442 } else {
1443 next_shortname1='A';
1444 if (next_shortname2 < '9') {
1445 next_shortname2++;
1446 } else {
1447 next_shortname2='0';
1448 }
1449 }
1450 new_shortname = 1;
1451 }
1452
1453 for (cpu = 0; cpu <= max_cpu; cpu++) {
1454 if (cpu != this_cpu)
1455 printf(" ");
1456 else
1457 printf("*");
1458
1459 if (curr_thread[cpu]) {
1460 if (curr_thread[cpu]->pid)
1461 printf("%2s ", curr_thread[cpu]->shortname);
1462 else
1463 printf(". ");
1464 } else
1465 printf(" ");
1466 }
1467
1468 printf(" %12.6f secs ", (double)timestamp/1e9);
1469 if (new_shortname) {
1470 printf("%s => %s:%d\n",
1471 sched_in->shortname, sched_in->comm, sched_in->pid);
1472 } else {
1473 printf("\n");
1474 }
1475}
1476
1477
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001478static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001479process_sched_switch_event(void *data, struct perf_session *session,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001480 struct event *event,
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001481 int this_cpu,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001482 u64 timestamp __used,
1483 struct thread *thread __used)
1484{
1485 struct trace_switch_event switch_event;
1486
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001487 FILL_COMMON_FIELDS(switch_event, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001488
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001489 FILL_ARRAY(switch_event, prev_comm, event, data);
1490 FILL_FIELD(switch_event, prev_pid, event, data);
1491 FILL_FIELD(switch_event, prev_prio, event, data);
1492 FILL_FIELD(switch_event, prev_state, event, data);
1493 FILL_ARRAY(switch_event, next_comm, event, data);
1494 FILL_FIELD(switch_event, next_pid, event, data);
1495 FILL_FIELD(switch_event, next_prio, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001496
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001497 if (curr_pid[this_cpu] != (u32)-1) {
Ingo Molnarc8a37752009-09-16 14:07:00 +02001498 /*
1499 * Are we trying to switch away a PID that is
1500 * not current?
1501 */
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001502 if (curr_pid[this_cpu] != switch_event.prev_pid)
Ingo Molnarc8a37752009-09-16 14:07:00 +02001503 nr_context_switch_bugs++;
1504 }
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001505 if (trace_handler->switch_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001506 trace_handler->switch_event(&switch_event, session, event,
1507 this_cpu, timestamp, thread);
Ingo Molnarc8a37752009-09-16 14:07:00 +02001508
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001509 curr_pid[this_cpu] = switch_event.next_pid;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001510}
1511
1512static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001513process_sched_runtime_event(void *data, struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001514 struct event *event,
1515 int cpu __used,
1516 u64 timestamp __used,
1517 struct thread *thread __used)
1518{
1519 struct trace_runtime_event runtime_event;
1520
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001521 FILL_ARRAY(runtime_event, comm, event, data);
1522 FILL_FIELD(runtime_event, pid, event, data);
1523 FILL_FIELD(runtime_event, runtime, event, data);
1524 FILL_FIELD(runtime_event, vruntime, event, data);
mingo39aeb522009-09-14 20:04:48 +02001525
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001526 if (trace_handler->runtime_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001527 trace_handler->runtime_event(&runtime_event, session, event, cpu, timestamp, thread);
mingo39aeb522009-09-14 20:04:48 +02001528}
1529
1530static void
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001531process_sched_fork_event(void *data,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001532 struct event *event,
1533 int cpu __used,
1534 u64 timestamp __used,
1535 struct thread *thread __used)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001536{
Frederic Weisbecker46538812009-09-12 02:43:45 +02001537 struct trace_fork_event fork_event;
1538
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001539 FILL_COMMON_FIELDS(fork_event, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001540
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001541 FILL_ARRAY(fork_event, parent_comm, event, data);
1542 FILL_FIELD(fork_event, parent_pid, event, data);
1543 FILL_ARRAY(fork_event, child_comm, event, data);
1544 FILL_FIELD(fork_event, child_pid, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001545
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001546 if (trace_handler->fork_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001547 trace_handler->fork_event(&fork_event, event,
1548 cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001549}
1550
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001551static void
1552process_sched_exit_event(struct event *event,
1553 int cpu __used,
1554 u64 timestamp __used,
1555 struct thread *thread __used)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001556{
Ingo Molnarad236fd2009-09-11 12:12:54 +02001557 if (verbose)
1558 printf("sched_exit event %p\n", event);
Ingo Molnarec156762009-09-11 12:12:54 +02001559}
1560
1561static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001562process_sched_migrate_task_event(void *data, struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001563 struct event *event,
1564 int cpu __used,
1565 u64 timestamp __used,
1566 struct thread *thread __used)
1567{
1568 struct trace_migrate_task_event migrate_task_event;
1569
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001570 FILL_COMMON_FIELDS(migrate_task_event, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001571
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001572 FILL_ARRAY(migrate_task_event, comm, event, data);
1573 FILL_FIELD(migrate_task_event, pid, event, data);
1574 FILL_FIELD(migrate_task_event, prio, event, data);
1575 FILL_FIELD(migrate_task_event, cpu, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001576
1577 if (trace_handler->migrate_task_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001578 trace_handler->migrate_task_event(&migrate_task_event, session,
1579 event, cpu, timestamp, thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001580}
1581
1582static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001583process_raw_event(event_t *raw_event __used, struct perf_session *session,
1584 void *data, int cpu, u64 timestamp, struct thread *thread)
Ingo Molnarec156762009-09-11 12:12:54 +02001585{
Ingo Molnarec156762009-09-11 12:12:54 +02001586 struct event *event;
1587 int type;
1588
Xiao Guangrongd8bd9e02009-12-07 12:06:29 +08001589
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001590 type = trace_parse_common_type(data);
Ingo Molnarec156762009-09-11 12:12:54 +02001591 event = trace_find_event(type);
1592
Ingo Molnarec156762009-09-11 12:12:54 +02001593 if (!strcmp(event->name, "sched_switch"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001594 process_sched_switch_event(data, session, event, cpu, timestamp, thread);
mingo39aeb522009-09-14 20:04:48 +02001595 if (!strcmp(event->name, "sched_stat_runtime"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001596 process_sched_runtime_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarec156762009-09-11 12:12:54 +02001597 if (!strcmp(event->name, "sched_wakeup"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001598 process_sched_wakeup_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001599 if (!strcmp(event->name, "sched_wakeup_new"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001600 process_sched_wakeup_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001601 if (!strcmp(event->name, "sched_process_fork"))
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001602 process_sched_fork_event(data, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001603 if (!strcmp(event->name, "sched_process_exit"))
1604 process_sched_exit_event(event, cpu, timestamp, thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001605 if (!strcmp(event->name, "sched_migrate_task"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001606 process_sched_migrate_task_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarec156762009-09-11 12:12:54 +02001607}
1608
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001609static int process_sample_event(event_t *event, struct perf_session *session)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001610{
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +09001611 struct sample_data data;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001612 struct thread *thread;
Arnaldo Carvalho de Meloa80deb62009-09-28 15:23:51 -03001613
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -02001614 if (!(session->sample_type & PERF_SAMPLE_RAW))
Arnaldo Carvalho de Meloa80deb62009-09-28 15:23:51 -03001615 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001616
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +09001617 memset(&data, 0, sizeof(data));
1618 data.time = -1;
1619 data.cpu = -1;
1620 data.period = -1;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001621
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -02001622 event__parse_sample(event, session->sample_type, &data);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001623
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -02001624 dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001625 event->header.misc,
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +09001626 data.pid, data.tid,
1627 (void *)(long)data.ip,
1628 (long long)data.period);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001629
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001630 thread = perf_session__findnew(session, data.pid);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001631 if (thread == NULL) {
Arnaldo Carvalho de Melo6beba7a2009-10-21 17:34:06 -02001632 pr_debug("problem processing %d event, skipping it.\n",
1633 event->header.type);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001634 return -1;
1635 }
1636
Julia Lawallf39cdf22009-10-17 08:43:17 +02001637 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
1638
OGAWA Hirofumi180f95e2009-12-06 20:08:24 +09001639 if (profile_cpu != -1 && profile_cpu != (int)data.cpu)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001640 return 0;
1641
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001642 process_raw_event(event, session, data.raw_data, data.cpu, data.time, thread);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001643
1644 return 0;
1645}
1646
Arnaldo Carvalho de Melod8f66242009-12-13 19:50:24 -02001647static int process_lost_event(event_t *event __used,
1648 struct perf_session *session __used)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001649{
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001650 nr_lost_chunks++;
1651 nr_lost_events += event->lost.lost;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001652
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001653 return 0;
1654}
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001655
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -02001656static int sample_type_check(struct perf_session *session __used)
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001657{
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -02001658 if (!(session->sample_type & PERF_SAMPLE_RAW)) {
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001659 fprintf(stderr,
1660 "No trace sample to read. Did you call perf record "
1661 "without -R?");
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001662 return -1;
1663 }
1664
1665 return 0;
1666}
1667
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -02001668static struct perf_event_ops event_ops = {
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001669 .process_sample_event = process_sample_event,
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -02001670 .process_comm_event = event__process_comm,
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001671 .process_lost_event = process_lost_event,
1672 .sample_type_check = sample_type_check,
1673};
1674
Ingo Molnar46f392c2009-09-12 10:08:34 +02001675static int read_events(void)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001676{
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001677 int err;
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -02001678 struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001679 if (session == NULL)
1680 return -ENOMEM;
1681
Arnaldo Carvalho de Meloec913362009-12-13 19:50:27 -02001682 err = perf_session__process_events(session, &event_ops);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001683 perf_session__delete(session);
1684 return err;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001685}
1686
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001687static void print_bad_events(void)
1688{
1689 if (nr_unordered_timestamps && nr_timestamps) {
1690 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
1691 (double)nr_unordered_timestamps/(double)nr_timestamps*100.0,
1692 nr_unordered_timestamps, nr_timestamps);
1693 }
1694 if (nr_lost_events && nr_events) {
1695 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
1696 (double)nr_lost_events/(double)nr_events*100.0,
1697 nr_lost_events, nr_events, nr_lost_chunks);
1698 }
1699 if (nr_state_machine_bugs && nr_timestamps) {
1700 printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)",
1701 (double)nr_state_machine_bugs/(double)nr_timestamps*100.0,
1702 nr_state_machine_bugs, nr_timestamps);
1703 if (nr_lost_events)
1704 printf(" (due to lost events?)");
1705 printf("\n");
1706 }
1707 if (nr_context_switch_bugs && nr_timestamps) {
1708 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
1709 (double)nr_context_switch_bugs/(double)nr_timestamps*100.0,
1710 nr_context_switch_bugs, nr_timestamps);
1711 if (nr_lost_events)
1712 printf(" (due to lost events?)");
1713 printf("\n");
1714 }
1715}
1716
1717static void __cmd_lat(void)
1718{
1719 struct rb_node *next;
1720
1721 setup_pager();
1722 read_events();
1723 sort_lat();
1724
Frederic Weisbecker3786310a2009-12-09 21:40:08 +01001725 printf("\n ---------------------------------------------------------------------------------------------------------------\n");
1726 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
1727 printf(" ---------------------------------------------------------------------------------------------------------------\n");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001728
1729 next = rb_first(&sorted_atom_root);
1730
1731 while (next) {
1732 struct work_atoms *work_list;
1733
1734 work_list = rb_entry(next, struct work_atoms, node);
1735 output_lat_thread(work_list);
1736 next = rb_next(next);
1737 }
1738
1739 printf(" -----------------------------------------------------------------------------------------\n");
1740 printf(" TOTAL: |%11.3f ms |%9Ld |\n",
1741 (double)all_runtime/1e6, all_count);
1742
1743 printf(" ---------------------------------------------------\n");
1744
1745 print_bad_events();
1746 printf("\n");
1747
1748}
1749
1750static struct trace_sched_handler map_ops = {
1751 .wakeup_event = NULL,
1752 .switch_event = map_switch_event,
1753 .runtime_event = NULL,
1754 .fork_event = NULL,
1755};
1756
1757static void __cmd_map(void)
1758{
Ingo Molnar40749d02009-09-17 18:24:55 +02001759 max_cpu = sysconf(_SC_NPROCESSORS_CONF);
1760
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001761 setup_pager();
1762 read_events();
1763 print_bad_events();
1764}
1765
1766static void __cmd_replay(void)
1767{
1768 unsigned long i;
1769
1770 calibrate_run_measurement_overhead();
1771 calibrate_sleep_measurement_overhead();
1772
1773 test_calibrations();
1774
1775 read_events();
1776
1777 printf("nr_run_events: %ld\n", nr_run_events);
1778 printf("nr_sleep_events: %ld\n", nr_sleep_events);
1779 printf("nr_wakeup_events: %ld\n", nr_wakeup_events);
1780
1781 if (targetless_wakeups)
1782 printf("target-less wakeups: %ld\n", targetless_wakeups);
1783 if (multitarget_wakeups)
1784 printf("multi-target wakeups: %ld\n", multitarget_wakeups);
1785 if (nr_run_events_optimized)
1786 printf("run atoms optimized: %ld\n",
1787 nr_run_events_optimized);
1788
1789 print_task_traces();
1790 add_cross_task_wakeups();
1791
1792 create_tasks();
1793 printf("------------------------------------------------------------\n");
1794 for (i = 0; i < replay_repeat; i++)
1795 run_one_test();
1796}
1797
1798
Ingo Molnar46f392c2009-09-12 10:08:34 +02001799static const char * const sched_usage[] = {
Mike Galbraith4b77a722009-09-18 08:22:24 +02001800 "perf sched [<options>] {record|latency|map|replay|trace}",
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001801 NULL
1802};
1803
Ingo Molnarf2858d82009-09-11 12:12:54 +02001804static const struct option sched_options[] = {
Mike Galbraith4b77a722009-09-18 08:22:24 +02001805 OPT_STRING('i', "input", &input_name, "file",
1806 "input file name"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001807 OPT_BOOLEAN('v', "verbose", &verbose,
1808 "be more verbose (show symbol address, etc)"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001809 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1810 "dump raw trace in ASCII"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001811 OPT_END()
1812};
1813
1814static const char * const latency_usage[] = {
1815 "perf sched latency [<options>]",
1816 NULL
1817};
1818
1819static const struct option latency_options[] = {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001820 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1821 "sort by key(s): runtime, switch, avg, max"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001822 OPT_BOOLEAN('v', "verbose", &verbose,
1823 "be more verbose (show symbol address, etc)"),
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001824 OPT_INTEGER('C', "CPU", &profile_cpu,
1825 "CPU to profile on"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001826 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1827 "dump raw trace in ASCII"),
1828 OPT_END()
1829};
1830
1831static const char * const replay_usage[] = {
1832 "perf sched replay [<options>]",
1833 NULL
1834};
1835
1836static const struct option replay_options[] = {
1837 OPT_INTEGER('r', "repeat", &replay_repeat,
1838 "repeat the workload replay N times (-1: infinite)"),
1839 OPT_BOOLEAN('v', "verbose", &verbose,
1840 "be more verbose (show symbol address, etc)"),
1841 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1842 "dump raw trace in ASCII"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001843 OPT_END()
1844};
1845
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001846static void setup_sorting(void)
1847{
1848 char *tmp, *tok, *str = strdup(sort_order);
1849
1850 for (tok = strtok_r(str, ", ", &tmp);
1851 tok; tok = strtok_r(NULL, ", ", &tmp)) {
1852 if (sort_dimension__add(tok, &sort_list) < 0) {
1853 error("Unknown --sort key: `%s'", tok);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001854 usage_with_options(latency_usage, latency_options);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001855 }
1856 }
1857
1858 free(str);
1859
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001860 sort_dimension__add("pid", &cmp_pid);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001861}
1862
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001863static const char *record_args[] = {
1864 "record",
1865 "-a",
1866 "-R",
Frederic Weisbeckerd1302522009-09-14 08:57:15 +02001867 "-M",
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001868 "-f",
Ingo Molnardc02bf72009-09-16 13:45:00 +02001869 "-m", "1024",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001870 "-c", "1",
1871 "-e", "sched:sched_switch:r",
1872 "-e", "sched:sched_stat_wait:r",
1873 "-e", "sched:sched_stat_sleep:r",
1874 "-e", "sched:sched_stat_iowait:r",
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001875 "-e", "sched:sched_stat_runtime:r",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001876 "-e", "sched:sched_process_exit:r",
1877 "-e", "sched:sched_process_fork:r",
1878 "-e", "sched:sched_wakeup:r",
1879 "-e", "sched:sched_migrate_task:r",
1880};
1881
1882static int __cmd_record(int argc, const char **argv)
1883{
1884 unsigned int rec_argc, i, j;
1885 const char **rec_argv;
1886
1887 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1888 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1889
1890 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1891 rec_argv[i] = strdup(record_args[i]);
1892
1893 for (j = 1; j < (unsigned int)argc; j++, i++)
1894 rec_argv[i] = argv[j];
1895
1896 BUG_ON(i != rec_argc);
1897
1898 return cmd_record(i, rec_argv, NULL);
1899}
1900
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001901int cmd_sched(int argc, const char **argv, const char *prefix __used)
1902{
Ingo Molnarf2858d82009-09-11 12:12:54 +02001903 argc = parse_options(argc, argv, sched_options, sched_usage,
1904 PARSE_OPT_STOP_AT_NON_OPTION);
1905 if (!argc)
1906 usage_with_options(sched_usage, sched_options);
1907
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001908 /*
1909 * Aliased to 'perf trace' for now:
1910 */
1911 if (!strcmp(argv[0], "trace"))
1912 return cmd_trace(argc, argv, prefix);
1913
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -02001914 symbol__init();
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001915 if (!strncmp(argv[0], "rec", 3)) {
1916 return __cmd_record(argc, argv);
1917 } else if (!strncmp(argv[0], "lat", 3)) {
Ingo Molnarf2858d82009-09-11 12:12:54 +02001918 trace_handler = &lat_ops;
1919 if (argc > 1) {
1920 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
1921 if (argc)
1922 usage_with_options(latency_usage, latency_options);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001923 }
Ingo Molnarb5fae122009-09-11 12:12:54 +02001924 setup_sorting();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001925 __cmd_lat();
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001926 } else if (!strcmp(argv[0], "map")) {
1927 trace_handler = &map_ops;
1928 setup_sorting();
1929 __cmd_map();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001930 } else if (!strncmp(argv[0], "rep", 3)) {
1931 trace_handler = &replay_ops;
1932 if (argc) {
1933 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
1934 if (argc)
1935 usage_with_options(replay_usage, replay_options);
1936 }
1937 __cmd_replay();
1938 } else {
1939 usage_with_options(sched_usage, sched_options);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001940 }
1941
Ingo Molnarec156762009-09-11 12:12:54 +02001942 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001943}