blob: dcfe8873c9a1b1b0813373aa2ae9365c639a16e7 [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";
Arnaldo Carvalho de Meloedb7c602010-05-17 16:22:41 -030025static const char *sort_order = default_sort_order;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +020026
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;
Arnaldo Carvalho de Meloeed05fe2010-04-05 12:53:45 -030071 int specific_wait;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020072 u64 timestamp;
73 u64 duration;
Ingo Molnarec156762009-09-11 12:12:54 +020074 unsigned long nr;
Ingo Molnarec156762009-09-11 12:12:54 +020075 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
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -0300108static unsigned int 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 Weisbecker37863102009-12-09 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
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200196 printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200197}
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
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200214 printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200215}
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 Molnarec156762009-09-11 12:12:54 +0200372
mingo39aeb522009-09-14 20:04:48 +0200373 switch (atom->type) {
Ingo Molnarec156762009-09-11 12:12:54 +0200374 case SCHED_EVENT_RUN:
mingo39aeb522009-09-14 20:04:48 +0200375 burn_nsecs(atom->duration);
Ingo Molnarec156762009-09-11 12:12:54 +0200376 break;
377 case SCHED_EVENT_SLEEP:
mingo39aeb522009-09-14 20:04:48 +0200378 if (atom->wait_sem)
379 ret = sem_wait(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200380 BUG_ON(ret);
381 break;
382 case SCHED_EVENT_WAKEUP:
mingo39aeb522009-09-14 20:04:48 +0200383 if (atom->wait_sem)
384 ret = sem_post(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200385 BUG_ON(ret);
386 break;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200387 case SCHED_EVENT_MIGRATION:
388 break;
Ingo Molnarec156762009-09-11 12:12:54 +0200389 default:
390 BUG_ON(1);
391 }
392}
393
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200394static u64 get_cpu_usage_nsec_parent(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200395{
396 struct rusage ru;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200397 u64 sum;
Ingo Molnarec156762009-09-11 12:12:54 +0200398 int err;
399
400 err = getrusage(RUSAGE_SELF, &ru);
401 BUG_ON(err);
402
403 sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
404 sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
405
406 return sum;
407}
408
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800409static int self_open_counters(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200410{
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800411 struct perf_event_attr attr;
412 int fd;
413
414 memset(&attr, 0, sizeof(attr));
415
416 attr.type = PERF_TYPE_SOFTWARE;
417 attr.config = PERF_COUNT_SW_TASK_CLOCK;
418
419 fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
420
421 if (fd < 0)
422 die("Error: sys_perf_event_open() syscall returned"
423 "with %d (%s)\n", fd, strerror(errno));
424 return fd;
425}
426
427static u64 get_cpu_usage_nsec_self(int fd)
428{
429 u64 runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200430 int ret;
431
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800432 ret = read(fd, &runtime, sizeof(runtime));
433 BUG_ON(ret != sizeof(runtime));
Ingo Molnarec156762009-09-11 12:12:54 +0200434
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800435 return runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200436}
437
438static void *thread_func(void *ctx)
439{
440 struct task_desc *this_task = ctx;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200441 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200442 unsigned long i, ret;
443 char comm2[22];
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800444 int fd;
Ingo Molnarec156762009-09-11 12:12:54 +0200445
Ingo Molnarec156762009-09-11 12:12:54 +0200446 sprintf(comm2, ":%s", this_task->comm);
447 prctl(PR_SET_NAME, comm2);
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800448 fd = self_open_counters();
Ingo Molnarec156762009-09-11 12:12:54 +0200449
450again:
451 ret = sem_post(&this_task->ready_for_work);
452 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200453 ret = pthread_mutex_lock(&start_work_mutex);
454 BUG_ON(ret);
455 ret = pthread_mutex_unlock(&start_work_mutex);
456 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200457
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800458 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200459
460 for (i = 0; i < this_task->nr_events; i++) {
461 this_task->curr_event = i;
mingo39aeb522009-09-14 20:04:48 +0200462 process_sched_event(this_task, this_task->atoms[i]);
Ingo Molnarec156762009-09-11 12:12:54 +0200463 }
464
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800465 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200466 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
Ingo Molnarec156762009-09-11 12:12:54 +0200467 ret = sem_post(&this_task->work_done_sem);
468 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200469
470 ret = pthread_mutex_lock(&work_done_wait_mutex);
471 BUG_ON(ret);
472 ret = pthread_mutex_unlock(&work_done_wait_mutex);
473 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200474
475 goto again;
476}
477
478static void create_tasks(void)
479{
480 struct task_desc *task;
481 pthread_attr_t attr;
482 unsigned long i;
483 int err;
484
485 err = pthread_attr_init(&attr);
486 BUG_ON(err);
Jiri Pirko12f7e032011-01-10 14:14:23 -0200487 err = pthread_attr_setstacksize(&attr,
488 (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
Ingo Molnarec156762009-09-11 12:12:54 +0200489 BUG_ON(err);
490 err = pthread_mutex_lock(&start_work_mutex);
491 BUG_ON(err);
492 err = pthread_mutex_lock(&work_done_wait_mutex);
493 BUG_ON(err);
494 for (i = 0; i < nr_tasks; i++) {
495 task = tasks[i];
496 sem_init(&task->sleep_sem, 0, 0);
497 sem_init(&task->ready_for_work, 0, 0);
498 sem_init(&task->work_done_sem, 0, 0);
499 task->curr_event = 0;
500 err = pthread_create(&task->thread, &attr, thread_func, task);
501 BUG_ON(err);
502 }
503}
504
Ingo Molnarec156762009-09-11 12:12:54 +0200505static void wait_for_tasks(void)
506{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200507 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200508 struct task_desc *task;
509 unsigned long i, ret;
510
Ingo Molnarec156762009-09-11 12:12:54 +0200511 start_time = get_nsecs();
Ingo Molnarec156762009-09-11 12:12:54 +0200512 cpu_usage = 0;
513 pthread_mutex_unlock(&work_done_wait_mutex);
514
515 for (i = 0; i < nr_tasks; i++) {
516 task = tasks[i];
517 ret = sem_wait(&task->ready_for_work);
518 BUG_ON(ret);
519 sem_init(&task->ready_for_work, 0, 0);
520 }
521 ret = pthread_mutex_lock(&work_done_wait_mutex);
522 BUG_ON(ret);
523
524 cpu_usage_0 = get_cpu_usage_nsec_parent();
525
526 pthread_mutex_unlock(&start_work_mutex);
527
Ingo Molnarec156762009-09-11 12:12:54 +0200528 for (i = 0; i < nr_tasks; i++) {
529 task = tasks[i];
530 ret = sem_wait(&task->work_done_sem);
531 BUG_ON(ret);
532 sem_init(&task->work_done_sem, 0, 0);
533 cpu_usage += task->cpu_usage;
534 task->cpu_usage = 0;
535 }
536
537 cpu_usage_1 = get_cpu_usage_nsec_parent();
538 if (!runavg_cpu_usage)
539 runavg_cpu_usage = cpu_usage;
540 runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10;
541
542 parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
543 if (!runavg_parent_cpu_usage)
544 runavg_parent_cpu_usage = parent_cpu_usage;
545 runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 +
546 parent_cpu_usage)/10;
547
548 ret = pthread_mutex_lock(&start_work_mutex);
549 BUG_ON(ret);
550
551 for (i = 0; i < nr_tasks; i++) {
552 task = tasks[i];
553 sem_init(&task->sleep_sem, 0, 0);
554 task->curr_event = 0;
555 }
556}
557
Ingo Molnarec156762009-09-11 12:12:54 +0200558static void run_one_test(void)
559{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500560 u64 T0, T1, delta, avg_delta, fluct;
Ingo Molnarec156762009-09-11 12:12:54 +0200561
562 T0 = get_nsecs();
563 wait_for_tasks();
564 T1 = get_nsecs();
565
566 delta = T1 - T0;
567 sum_runtime += delta;
568 nr_runs++;
569
570 avg_delta = sum_runtime / nr_runs;
571 if (delta < avg_delta)
572 fluct = avg_delta - delta;
573 else
574 fluct = delta - avg_delta;
575 sum_fluct += fluct;
Ingo Molnarec156762009-09-11 12:12:54 +0200576 if (!run_avg)
577 run_avg = delta;
578 run_avg = (run_avg*9 + delta)/10;
579
Ingo Molnarad236fd2009-09-11 12:12:54 +0200580 printf("#%-3ld: %0.3f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200581 nr_runs, (double)delta/1000000.0);
582
Ingo Molnarad236fd2009-09-11 12:12:54 +0200583 printf("ravg: %0.2f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200584 (double)run_avg/1e6);
585
Ingo Molnarad236fd2009-09-11 12:12:54 +0200586 printf("cpu: %0.2f / %0.2f",
Ingo Molnarec156762009-09-11 12:12:54 +0200587 (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
588
589#if 0
590 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200591 * rusage statistics done by the parent, these are less
592 * accurate than the sum_exec_runtime based statistics:
593 */
Ingo Molnarad236fd2009-09-11 12:12:54 +0200594 printf(" [%0.2f / %0.2f]",
Ingo Molnarec156762009-09-11 12:12:54 +0200595 (double)parent_cpu_usage/1e6,
596 (double)runavg_parent_cpu_usage/1e6);
597#endif
598
Ingo Molnarad236fd2009-09-11 12:12:54 +0200599 printf("\n");
Ingo Molnarec156762009-09-11 12:12:54 +0200600
601 if (nr_sleep_corrections)
Ingo Molnarad236fd2009-09-11 12:12:54 +0200602 printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
Ingo Molnarec156762009-09-11 12:12:54 +0200603 nr_sleep_corrections = 0;
604}
605
606static void test_calibrations(void)
607{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200608 u64 T0, T1;
Ingo Molnarec156762009-09-11 12:12:54 +0200609
610 T0 = get_nsecs();
611 burn_nsecs(1e6);
612 T1 = get_nsecs();
613
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200614 printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200615
616 T0 = get_nsecs();
617 sleep_nsecs(1e6);
618 T1 = get_nsecs();
619
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200620 printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200621}
622
Frederic Weisbecker46538812009-09-12 02:43:45 +0200623#define FILL_FIELD(ptr, field, event, data) \
624 ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
625
626#define FILL_ARRAY(ptr, array, event, data) \
627do { \
628 void *__array = raw_field_ptr(event, #array, data); \
629 memcpy(ptr.array, __array, sizeof(ptr.array)); \
630} while(0)
631
632#define FILL_COMMON_FIELDS(ptr, event, data) \
633do { \
634 FILL_FIELD(ptr, common_type, event, data); \
635 FILL_FIELD(ptr, common_flags, event, data); \
636 FILL_FIELD(ptr, common_preempt_count, event, data); \
637 FILL_FIELD(ptr, common_pid, event, data); \
638 FILL_FIELD(ptr, common_tgid, event, data); \
639} while (0)
640
Ingo Molnarfbf94822009-09-11 12:12:54 +0200641
Ingo Molnarec156762009-09-11 12:12:54 +0200642
Ingo Molnarfbf94822009-09-11 12:12:54 +0200643struct trace_switch_event {
644 u32 size;
645
646 u16 common_type;
647 u8 common_flags;
648 u8 common_preempt_count;
649 u32 common_pid;
650 u32 common_tgid;
651
652 char prev_comm[16];
653 u32 prev_pid;
654 u32 prev_prio;
655 u64 prev_state;
656 char next_comm[16];
657 u32 next_pid;
658 u32 next_prio;
659};
660
mingo39aeb522009-09-14 20:04:48 +0200661struct trace_runtime_event {
662 u32 size;
663
664 u16 common_type;
665 u8 common_flags;
666 u8 common_preempt_count;
667 u32 common_pid;
668 u32 common_tgid;
669
670 char comm[16];
671 u32 pid;
672 u64 runtime;
673 u64 vruntime;
674};
Ingo Molnarfbf94822009-09-11 12:12:54 +0200675
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200676struct trace_wakeup_event {
677 u32 size;
678
679 u16 common_type;
680 u8 common_flags;
681 u8 common_preempt_count;
682 u32 common_pid;
683 u32 common_tgid;
684
685 char comm[16];
686 u32 pid;
687
688 u32 prio;
689 u32 success;
690 u32 cpu;
691};
692
693struct trace_fork_event {
694 u32 size;
695
696 u16 common_type;
697 u8 common_flags;
698 u8 common_preempt_count;
699 u32 common_pid;
700 u32 common_tgid;
701
702 char parent_comm[16];
703 u32 parent_pid;
704 char child_comm[16];
705 u32 child_pid;
706};
707
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200708struct trace_migrate_task_event {
709 u32 size;
710
711 u16 common_type;
712 u8 common_flags;
713 u8 common_preempt_count;
714 u32 common_pid;
715 u32 common_tgid;
716
717 char comm[16];
718 u32 pid;
719
720 u32 prio;
721 u32 cpu;
722};
723
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200724struct trace_sched_handler {
725 void (*switch_event)(struct trace_switch_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200726 struct perf_session *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200727 struct event *,
728 int cpu,
729 u64 timestamp,
730 struct thread *thread);
731
mingo39aeb522009-09-14 20:04:48 +0200732 void (*runtime_event)(struct trace_runtime_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200733 struct perf_session *,
mingo39aeb522009-09-14 20:04:48 +0200734 struct event *,
735 int cpu,
736 u64 timestamp,
737 struct thread *thread);
738
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200739 void (*wakeup_event)(struct trace_wakeup_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200740 struct perf_session *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200741 struct event *,
742 int cpu,
743 u64 timestamp,
744 struct thread *thread);
745
746 void (*fork_event)(struct trace_fork_event *,
747 struct event *,
748 int cpu,
749 u64 timestamp,
750 struct thread *thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200751
752 void (*migrate_task_event)(struct trace_migrate_task_event *,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200753 struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200754 struct event *,
755 int cpu,
756 u64 timestamp,
757 struct thread *thread);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200758};
759
Ingo Molnarfbf94822009-09-11 12:12:54 +0200760
761static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200762replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200763 struct perf_session *session __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200764 struct event *event,
765 int cpu __used,
766 u64 timestamp __used,
767 struct thread *thread __used)
Ingo Molnarec156762009-09-11 12:12:54 +0200768{
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200769 struct task_desc *waker, *wakee;
770
771 if (verbose) {
772 printf("sched_wakeup event %p\n", event);
773
774 printf(" ... pid %d woke up %s/%d\n",
775 wakeup_event->common_pid,
776 wakeup_event->comm,
777 wakeup_event->pid);
778 }
779
780 waker = register_pid(wakeup_event->common_pid, "<unknown>");
781 wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
782
783 add_sched_event_wakeup(waker, timestamp, wakee);
784}
785
Ingo Molnard1153382009-09-14 18:22:53 +0200786static u64 cpu_last_switched[MAX_CPUS];
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200787
788static void
789replay_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -0200790 struct perf_session *session __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200791 struct event *event,
792 int cpu,
793 u64 timestamp,
794 struct thread *thread __used)
795{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500796 struct task_desc *prev, __used *next;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200797 u64 timestamp0;
798 s64 delta;
799
Ingo Molnarad236fd2009-09-11 12:12:54 +0200800 if (verbose)
801 printf("sched_switch event %p\n", event);
802
Ingo Molnarfbf94822009-09-11 12:12:54 +0200803 if (cpu >= MAX_CPUS || cpu < 0)
804 return;
805
806 timestamp0 = cpu_last_switched[cpu];
807 if (timestamp0)
808 delta = timestamp - timestamp0;
809 else
810 delta = 0;
811
812 if (delta < 0)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200813 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200814
Ingo Molnarad236fd2009-09-11 12:12:54 +0200815 if (verbose) {
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200816 printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200817 switch_event->prev_comm, switch_event->prev_pid,
818 switch_event->next_comm, switch_event->next_pid,
Ingo Molnarad236fd2009-09-11 12:12:54 +0200819 delta);
820 }
Ingo Molnarfbf94822009-09-11 12:12:54 +0200821
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200822 prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
823 next = register_pid(switch_event->next_pid, switch_event->next_comm);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200824
825 cpu_last_switched[cpu] = timestamp;
826
827 add_sched_event_run(prev, timestamp, delta);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200828 add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200829}
830
Ingo Molnarfbf94822009-09-11 12:12:54 +0200831
832static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200833replay_fork_event(struct trace_fork_event *fork_event,
834 struct event *event,
835 int cpu __used,
836 u64 timestamp __used,
837 struct thread *thread __used)
838{
839 if (verbose) {
840 printf("sched_fork event %p\n", event);
841 printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid);
842 printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid);
843 }
844 register_pid(fork_event->parent_pid, fork_event->parent_comm);
845 register_pid(fork_event->child_pid, fork_event->child_comm);
846}
847
848static struct trace_sched_handler replay_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +0200849 .wakeup_event = replay_wakeup_event,
850 .switch_event = replay_switch_event,
851 .fork_event = replay_fork_event,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200852};
853
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200854struct sort_dimension {
855 const char *name;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200856 sort_fn_t cmp;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200857 struct list_head list;
858};
859
860static LIST_HEAD(cmp_pid);
861
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200862static int
mingo39aeb522009-09-14 20:04:48 +0200863thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200864{
865 struct sort_dimension *sort;
866 int ret = 0;
867
Ingo Molnarb5fae122009-09-11 12:12:54 +0200868 BUG_ON(list_empty(list));
869
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200870 list_for_each_entry(sort, list, list) {
871 ret = sort->cmp(l, r);
872 if (ret)
873 return ret;
874 }
875
876 return ret;
877}
878
mingo39aeb522009-09-14 20:04:48 +0200879static struct work_atoms *
Ingo Molnarb5fae122009-09-11 12:12:54 +0200880thread_atoms_search(struct rb_root *root, struct thread *thread,
881 struct list_head *sort_list)
882{
883 struct rb_node *node = root->rb_node;
mingo39aeb522009-09-14 20:04:48 +0200884 struct work_atoms key = { .thread = thread };
Ingo Molnarb5fae122009-09-11 12:12:54 +0200885
886 while (node) {
mingo39aeb522009-09-14 20:04:48 +0200887 struct work_atoms *atoms;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200888 int cmp;
889
mingo39aeb522009-09-14 20:04:48 +0200890 atoms = container_of(node, struct work_atoms, node);
Ingo Molnarb5fae122009-09-11 12:12:54 +0200891
892 cmp = thread_lat_cmp(sort_list, &key, atoms);
893 if (cmp > 0)
894 node = node->rb_left;
895 else if (cmp < 0)
896 node = node->rb_right;
897 else {
898 BUG_ON(thread != atoms->thread);
899 return atoms;
900 }
901 }
902 return NULL;
903}
904
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200905static void
mingo39aeb522009-09-14 20:04:48 +0200906__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200907 struct list_head *sort_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200908{
909 struct rb_node **new = &(root->rb_node), *parent = NULL;
910
911 while (*new) {
mingo39aeb522009-09-14 20:04:48 +0200912 struct work_atoms *this;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200913 int cmp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200914
mingo39aeb522009-09-14 20:04:48 +0200915 this = container_of(*new, struct work_atoms, node);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200916 parent = *new;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200917
918 cmp = thread_lat_cmp(sort_list, data, this);
919
920 if (cmp > 0)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200921 new = &((*new)->rb_left);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200922 else
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200923 new = &((*new)->rb_right);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200924 }
925
926 rb_link_node(&data->node, parent, new);
927 rb_insert_color(&data->node, root);
928}
929
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200930static void thread_atoms_insert(struct thread *thread)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200931{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200932 struct work_atoms *atoms = zalloc(sizeof(*atoms));
Frederic Weisbecker17562202009-09-12 23:11:32 +0200933 if (!atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200934 die("No memory");
935
Frederic Weisbecker17562202009-09-12 23:11:32 +0200936 atoms->thread = thread;
mingo39aeb522009-09-14 20:04:48 +0200937 INIT_LIST_HEAD(&atoms->work_list);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200938 __thread_latency_insert(&atom_root, atoms, &cmp_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200939}
940
941static void
942latency_fork_event(struct trace_fork_event *fork_event __used,
943 struct event *event __used,
944 int cpu __used,
945 u64 timestamp __used,
946 struct thread *thread __used)
947{
948 /* should insert the newcomer */
949}
950
Ingo Molnarea92ed52009-09-12 10:08:34 +0200951__used
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200952static char sched_out_state(struct trace_switch_event *switch_event)
953{
954 const char *str = TASK_STATE_TO_CHAR_STR;
955
956 return str[switch_event->prev_state];
957}
958
959static void
mingo39aeb522009-09-14 20:04:48 +0200960add_sched_out_event(struct work_atoms *atoms,
961 char run_state,
962 u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200963{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200964 struct work_atom *atom = zalloc(sizeof(*atom));
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200965 if (!atom)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200966 die("Non memory");
967
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200968 atom->sched_out_time = timestamp;
969
mingo39aeb522009-09-14 20:04:48 +0200970 if (run_state == 'R') {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200971 atom->state = THREAD_WAIT_CPU;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200972 atom->wake_up_time = atom->sched_out_time;
Frederic Weisbeckerc6ced612009-09-13 00:46:19 +0200973 }
974
mingo39aeb522009-09-14 20:04:48 +0200975 list_add_tail(&atom->list, &atoms->work_list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200976}
977
978static void
mingo39aeb522009-09-14 20:04:48 +0200979add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used)
980{
981 struct work_atom *atom;
982
983 BUG_ON(list_empty(&atoms->work_list));
984
985 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
986
987 atom->runtime += delta;
988 atoms->total_runtime += delta;
989}
990
991static void
992add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200993{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200994 struct work_atom *atom;
Frederic Weisbecker66685672009-09-13 01:56:25 +0200995 u64 delta;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200996
mingo39aeb522009-09-14 20:04:48 +0200997 if (list_empty(&atoms->work_list))
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200998 return;
999
mingo39aeb522009-09-14 20:04:48 +02001000 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001001
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001002 if (atom->state != THREAD_WAIT_CPU)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001003 return;
1004
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001005 if (timestamp < atom->wake_up_time) {
1006 atom->state = THREAD_IGNORE;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001007 return;
1008 }
1009
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001010 atom->state = THREAD_SCHED_IN;
1011 atom->sched_in_time = timestamp;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001012
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001013 delta = atom->sched_in_time - atom->wake_up_time;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001014 atoms->total_lat += delta;
Frederic Weisbecker37863102009-12-09 21:40:08 +01001015 if (delta > atoms->max_lat) {
Frederic Weisbecker66685672009-09-13 01:56:25 +02001016 atoms->max_lat = delta;
Frederic Weisbecker37863102009-12-09 21:40:08 +01001017 atoms->max_lat_at = timestamp;
1018 }
Frederic Weisbecker66685672009-09-13 01:56:25 +02001019 atoms->nb_atoms++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001020}
1021
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001022static void
1023latency_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001024 struct perf_session *session,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001025 struct event *event __used,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001026 int cpu,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001027 u64 timestamp,
1028 struct thread *thread __used)
1029{
mingo39aeb522009-09-14 20:04:48 +02001030 struct work_atoms *out_events, *in_events;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001031 struct thread *sched_out, *sched_in;
Ingo Molnarea92ed52009-09-12 10:08:34 +02001032 u64 timestamp0;
1033 s64 delta;
1034
mingo39aeb522009-09-14 20:04:48 +02001035 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001036
1037 timestamp0 = cpu_last_switched[cpu];
1038 cpu_last_switched[cpu] = timestamp;
1039 if (timestamp0)
1040 delta = timestamp - timestamp0;
1041 else
1042 delta = 0;
1043
1044 if (delta < 0)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001045 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001046
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001047
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001048 sched_out = perf_session__findnew(session, switch_event->prev_pid);
1049 sched_in = perf_session__findnew(session, switch_event->next_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001050
mingo39aeb522009-09-14 20:04:48 +02001051 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1052 if (!out_events) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001053 thread_atoms_insert(sched_out);
mingo39aeb522009-09-14 20:04:48 +02001054 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1055 if (!out_events)
1056 die("out-event: Internal tree error");
1057 }
1058 add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
1059
1060 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1061 if (!in_events) {
1062 thread_atoms_insert(sched_in);
1063 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1064 if (!in_events)
1065 die("in-event: Internal tree error");
1066 /*
1067 * Take came in we have not heard about yet,
1068 * add in an initial atom in runnable state:
1069 */
1070 add_sched_out_event(in_events, 'R', timestamp);
1071 }
1072 add_sched_in_event(in_events, timestamp);
1073}
1074
1075static void
1076latency_runtime_event(struct trace_runtime_event *runtime_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001077 struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001078 struct event *event __used,
1079 int cpu,
1080 u64 timestamp,
1081 struct thread *this_thread __used)
1082{
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001083 struct thread *thread = perf_session__findnew(session, runtime_event->pid);
Arnaldo Carvalho de Melod5b889f2009-10-13 11:16:29 -03001084 struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001085
1086 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
mingo39aeb522009-09-14 20:04:48 +02001087 if (!atoms) {
1088 thread_atoms_insert(thread);
1089 atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
1090 if (!atoms)
1091 die("in-event: Internal tree error");
1092 add_sched_out_event(atoms, 'R', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001093 }
1094
mingo39aeb522009-09-14 20:04:48 +02001095 add_runtime_event(atoms, runtime_event->runtime, timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001096}
1097
1098static void
1099latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001100 struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001101 struct event *__event __used,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001102 int cpu __used,
1103 u64 timestamp,
1104 struct thread *thread __used)
1105{
mingo39aeb522009-09-14 20:04:48 +02001106 struct work_atoms *atoms;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001107 struct work_atom *atom;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001108 struct thread *wakee;
1109
1110 /* Note for later, it may be interesting to observe the failing cases */
1111 if (!wakeup_event->success)
1112 return;
1113
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001114 wakee = perf_session__findnew(session, wakeup_event->pid);
Ingo Molnarb5fae122009-09-11 12:12:54 +02001115 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
Frederic Weisbecker17562202009-09-12 23:11:32 +02001116 if (!atoms) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001117 thread_atoms_insert(wakee);
mingo39aeb522009-09-14 20:04:48 +02001118 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
1119 if (!atoms)
1120 die("wakeup-event: Internal tree error");
1121 add_sched_out_event(atoms, 'S', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001122 }
1123
mingo39aeb522009-09-14 20:04:48 +02001124 BUG_ON(list_empty(&atoms->work_list));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001125
mingo39aeb522009-09-14 20:04:48 +02001126 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001127
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001128 /*
1129 * You WILL be missing events if you've recorded only
1130 * one CPU, or are only looking at only one, so don't
1131 * make useless noise.
1132 */
1133 if (profile_cpu == -1 && atom->state != THREAD_SLEEPING)
Ingo Molnardc02bf72009-09-16 13:45:00 +02001134 nr_state_machine_bugs++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001135
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001136 nr_timestamps++;
1137 if (atom->sched_out_time > timestamp) {
Ingo Molnardc02bf72009-09-16 13:45:00 +02001138 nr_unordered_timestamps++;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001139 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001140 }
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001141
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001142 atom->state = THREAD_WAIT_CPU;
1143 atom->wake_up_time = timestamp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001144}
1145
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001146static void
1147latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001148 struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001149 struct event *__event __used,
1150 int cpu __used,
1151 u64 timestamp,
1152 struct thread *thread __used)
1153{
1154 struct work_atoms *atoms;
1155 struct work_atom *atom;
1156 struct thread *migrant;
1157
1158 /*
1159 * Only need to worry about migration when profiling one CPU.
1160 */
1161 if (profile_cpu == -1)
1162 return;
1163
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001164 migrant = perf_session__findnew(session, migrate_task_event->pid);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001165 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1166 if (!atoms) {
1167 thread_atoms_insert(migrant);
1168 register_pid(migrant->pid, migrant->comm);
1169 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1170 if (!atoms)
1171 die("migration-event: Internal tree error");
1172 add_sched_out_event(atoms, 'R', timestamp);
1173 }
1174
1175 BUG_ON(list_empty(&atoms->work_list));
1176
1177 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1178 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1179
1180 nr_timestamps++;
1181
1182 if (atom->sched_out_time > timestamp)
1183 nr_unordered_timestamps++;
1184}
1185
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001186static struct trace_sched_handler lat_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +02001187 .wakeup_event = latency_wakeup_event,
1188 .switch_event = latency_switch_event,
mingo39aeb522009-09-14 20:04:48 +02001189 .runtime_event = latency_runtime_event,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001190 .fork_event = latency_fork_event,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001191 .migrate_task_event = latency_migrate_task_event,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001192};
1193
mingo39aeb522009-09-14 20:04:48 +02001194static void output_lat_thread(struct work_atoms *work_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001195{
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001196 int i;
1197 int ret;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001198 u64 avg;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001199
mingo39aeb522009-09-14 20:04:48 +02001200 if (!work_list->nb_atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001201 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001202 /*
1203 * Ignore idle threads:
1204 */
Ingo Molnar80ed0982009-09-16 14:12:36 +02001205 if (!strcmp(work_list->thread->comm, "swapper"))
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001206 return;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001207
mingo39aeb522009-09-14 20:04:48 +02001208 all_runtime += work_list->total_runtime;
1209 all_count += work_list->nb_atoms;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001210
Ingo Molnar80ed0982009-09-16 14:12:36 +02001211 ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001212
mingo08f69e62009-09-14 18:30:44 +02001213 for (i = 0; i < 24 - ret; i++)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001214 printf(" ");
1215
mingo39aeb522009-09-14 20:04:48 +02001216 avg = work_list->total_lat / work_list->nb_atoms;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001217
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001218 printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n",
mingo39aeb522009-09-14 20:04:48 +02001219 (double)work_list->total_runtime / 1e6,
1220 work_list->nb_atoms, (double)avg / 1e6,
Frederic Weisbecker37863102009-12-09 21:40:08 +01001221 (double)work_list->max_lat / 1e6,
1222 (double)work_list->max_lat_at / 1e9);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001223}
1224
mingo39aeb522009-09-14 20:04:48 +02001225static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001226{
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001227 if (l->thread->pid < r->thread->pid)
1228 return -1;
1229 if (l->thread->pid > r->thread->pid)
1230 return 1;
1231
1232 return 0;
1233}
1234
1235static struct sort_dimension pid_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001236 .name = "pid",
1237 .cmp = pid_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001238};
1239
mingo39aeb522009-09-14 20:04:48 +02001240static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001241{
1242 u64 avgl, avgr;
1243
1244 if (!l->nb_atoms)
1245 return -1;
1246
1247 if (!r->nb_atoms)
1248 return 1;
1249
1250 avgl = l->total_lat / l->nb_atoms;
1251 avgr = r->total_lat / r->nb_atoms;
1252
1253 if (avgl < avgr)
1254 return -1;
1255 if (avgl > avgr)
1256 return 1;
1257
1258 return 0;
1259}
1260
1261static struct sort_dimension avg_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001262 .name = "avg",
1263 .cmp = avg_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001264};
1265
mingo39aeb522009-09-14 20:04:48 +02001266static int max_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001267{
1268 if (l->max_lat < r->max_lat)
1269 return -1;
1270 if (l->max_lat > r->max_lat)
1271 return 1;
1272
1273 return 0;
1274}
1275
1276static struct sort_dimension max_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001277 .name = "max",
1278 .cmp = max_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001279};
1280
mingo39aeb522009-09-14 20:04:48 +02001281static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001282{
1283 if (l->nb_atoms < r->nb_atoms)
1284 return -1;
1285 if (l->nb_atoms > r->nb_atoms)
1286 return 1;
1287
1288 return 0;
1289}
1290
1291static struct sort_dimension switch_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001292 .name = "switch",
1293 .cmp = switch_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001294};
1295
mingo39aeb522009-09-14 20:04:48 +02001296static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001297{
1298 if (l->total_runtime < r->total_runtime)
1299 return -1;
1300 if (l->total_runtime > r->total_runtime)
1301 return 1;
1302
1303 return 0;
1304}
1305
1306static struct sort_dimension runtime_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001307 .name = "runtime",
1308 .cmp = runtime_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001309};
1310
1311static struct sort_dimension *available_sorts[] = {
1312 &pid_sort_dimension,
1313 &avg_sort_dimension,
1314 &max_sort_dimension,
1315 &switch_sort_dimension,
1316 &runtime_sort_dimension,
1317};
1318
1319#define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
1320
1321static LIST_HEAD(sort_list);
1322
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001323static int sort_dimension__add(const char *tok, struct list_head *list)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001324{
1325 int i;
1326
1327 for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
1328 if (!strcmp(available_sorts[i]->name, tok)) {
1329 list_add_tail(&available_sorts[i]->list, list);
1330
1331 return 0;
1332 }
1333 }
1334
1335 return -1;
1336}
1337
1338static void setup_sorting(void);
1339
1340static void sort_lat(void)
1341{
1342 struct rb_node *node;
1343
1344 for (;;) {
mingo39aeb522009-09-14 20:04:48 +02001345 struct work_atoms *data;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001346 node = rb_first(&atom_root);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001347 if (!node)
1348 break;
1349
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001350 rb_erase(node, &atom_root);
mingo39aeb522009-09-14 20:04:48 +02001351 data = rb_entry(node, struct work_atoms, node);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001352 __thread_latency_insert(&sorted_atom_root, data, &sort_list);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001353 }
1354}
1355
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001356static struct trace_sched_handler *trace_handler;
1357
1358static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001359process_sched_wakeup_event(void *data, struct perf_session *session,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001360 struct event *event,
1361 int cpu __used,
1362 u64 timestamp __used,
1363 struct thread *thread __used)
1364{
1365 struct trace_wakeup_event wakeup_event;
1366
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001367 FILL_COMMON_FIELDS(wakeup_event, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001368
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001369 FILL_ARRAY(wakeup_event, comm, event, data);
1370 FILL_FIELD(wakeup_event, pid, event, data);
1371 FILL_FIELD(wakeup_event, prio, event, data);
1372 FILL_FIELD(wakeup_event, success, event, data);
1373 FILL_FIELD(wakeup_event, cpu, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001374
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001375 if (trace_handler->wakeup_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001376 trace_handler->wakeup_event(&wakeup_event, session, event,
1377 cpu, timestamp, thread);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001378}
1379
Ingo Molnarc8a37752009-09-16 14:07:00 +02001380/*
1381 * Track the current task - that way we can know whether there's any
1382 * weird events, such as a task being switched away that is not current.
1383 */
Ingo Molnar40749d02009-09-17 18:24:55 +02001384static int max_cpu;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001385
Ingo Molnarc8a37752009-09-16 14:07:00 +02001386static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 };
1387
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001388static struct thread *curr_thread[MAX_CPUS];
1389
1390static char next_shortname1 = 'A';
1391static char next_shortname2 = '0';
1392
1393static void
1394map_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001395 struct perf_session *session,
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001396 struct event *event __used,
1397 int this_cpu,
1398 u64 timestamp,
1399 struct thread *thread __used)
1400{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -05001401 struct thread *sched_out __used, *sched_in;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001402 int new_shortname;
1403 u64 timestamp0;
1404 s64 delta;
1405 int cpu;
1406
1407 BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
1408
1409 if (this_cpu > max_cpu)
1410 max_cpu = this_cpu;
1411
1412 timestamp0 = cpu_last_switched[this_cpu];
1413 cpu_last_switched[this_cpu] = timestamp;
1414 if (timestamp0)
1415 delta = timestamp - timestamp0;
1416 else
1417 delta = 0;
1418
1419 if (delta < 0)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001420 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001421
1422
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001423 sched_out = perf_session__findnew(session, switch_event->prev_pid);
1424 sched_in = perf_session__findnew(session, switch_event->next_pid);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001425
1426 curr_thread[this_cpu] = sched_in;
1427
1428 printf(" ");
1429
1430 new_shortname = 0;
1431 if (!sched_in->shortname[0]) {
1432 sched_in->shortname[0] = next_shortname1;
1433 sched_in->shortname[1] = next_shortname2;
1434
1435 if (next_shortname1 < 'Z') {
1436 next_shortname1++;
1437 } else {
1438 next_shortname1='A';
1439 if (next_shortname2 < '9') {
1440 next_shortname2++;
1441 } else {
1442 next_shortname2='0';
1443 }
1444 }
1445 new_shortname = 1;
1446 }
1447
1448 for (cpu = 0; cpu <= max_cpu; cpu++) {
1449 if (cpu != this_cpu)
1450 printf(" ");
1451 else
1452 printf("*");
1453
1454 if (curr_thread[cpu]) {
1455 if (curr_thread[cpu]->pid)
1456 printf("%2s ", curr_thread[cpu]->shortname);
1457 else
1458 printf(". ");
1459 } else
1460 printf(" ");
1461 }
1462
1463 printf(" %12.6f secs ", (double)timestamp/1e9);
1464 if (new_shortname) {
1465 printf("%s => %s:%d\n",
1466 sched_in->shortname, sched_in->comm, sched_in->pid);
1467 } else {
1468 printf("\n");
1469 }
1470}
1471
1472
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001473static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001474process_sched_switch_event(void *data, struct perf_session *session,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001475 struct event *event,
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001476 int this_cpu,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001477 u64 timestamp __used,
1478 struct thread *thread __used)
1479{
1480 struct trace_switch_event switch_event;
1481
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001482 FILL_COMMON_FIELDS(switch_event, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001483
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001484 FILL_ARRAY(switch_event, prev_comm, event, data);
1485 FILL_FIELD(switch_event, prev_pid, event, data);
1486 FILL_FIELD(switch_event, prev_prio, event, data);
1487 FILL_FIELD(switch_event, prev_state, event, data);
1488 FILL_ARRAY(switch_event, next_comm, event, data);
1489 FILL_FIELD(switch_event, next_pid, event, data);
1490 FILL_FIELD(switch_event, next_prio, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001491
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001492 if (curr_pid[this_cpu] != (u32)-1) {
Ingo Molnarc8a37752009-09-16 14:07:00 +02001493 /*
1494 * Are we trying to switch away a PID that is
1495 * not current?
1496 */
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001497 if (curr_pid[this_cpu] != switch_event.prev_pid)
Ingo Molnarc8a37752009-09-16 14:07:00 +02001498 nr_context_switch_bugs++;
1499 }
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001500 if (trace_handler->switch_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001501 trace_handler->switch_event(&switch_event, session, event,
1502 this_cpu, timestamp, thread);
Ingo Molnarc8a37752009-09-16 14:07:00 +02001503
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001504 curr_pid[this_cpu] = switch_event.next_pid;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001505}
1506
1507static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001508process_sched_runtime_event(void *data, struct perf_session *session,
mingo39aeb522009-09-14 20:04:48 +02001509 struct event *event,
1510 int cpu __used,
1511 u64 timestamp __used,
1512 struct thread *thread __used)
1513{
1514 struct trace_runtime_event runtime_event;
1515
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001516 FILL_ARRAY(runtime_event, comm, event, data);
1517 FILL_FIELD(runtime_event, pid, event, data);
1518 FILL_FIELD(runtime_event, runtime, event, data);
1519 FILL_FIELD(runtime_event, vruntime, event, data);
mingo39aeb522009-09-14 20:04:48 +02001520
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001521 if (trace_handler->runtime_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001522 trace_handler->runtime_event(&runtime_event, session, event, cpu, timestamp, thread);
mingo39aeb522009-09-14 20:04:48 +02001523}
1524
1525static void
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001526process_sched_fork_event(void *data,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001527 struct event *event,
1528 int cpu __used,
1529 u64 timestamp __used,
1530 struct thread *thread __used)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001531{
Frederic Weisbecker46538812009-09-12 02:43:45 +02001532 struct trace_fork_event fork_event;
1533
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001534 FILL_COMMON_FIELDS(fork_event, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001535
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001536 FILL_ARRAY(fork_event, parent_comm, event, data);
1537 FILL_FIELD(fork_event, parent_pid, event, data);
1538 FILL_ARRAY(fork_event, child_comm, event, data);
1539 FILL_FIELD(fork_event, child_pid, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001540
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001541 if (trace_handler->fork_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001542 trace_handler->fork_event(&fork_event, event,
1543 cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001544}
1545
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001546static void
1547process_sched_exit_event(struct event *event,
1548 int cpu __used,
1549 u64 timestamp __used,
1550 struct thread *thread __used)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001551{
Ingo Molnarad236fd2009-09-11 12:12:54 +02001552 if (verbose)
1553 printf("sched_exit event %p\n", event);
Ingo Molnarec156762009-09-11 12:12:54 +02001554}
1555
1556static void
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001557process_sched_migrate_task_event(void *data, struct perf_session *session,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001558 struct event *event,
1559 int cpu __used,
1560 u64 timestamp __used,
1561 struct thread *thread __used)
1562{
1563 struct trace_migrate_task_event migrate_task_event;
1564
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001565 FILL_COMMON_FIELDS(migrate_task_event, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001566
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001567 FILL_ARRAY(migrate_task_event, comm, event, data);
1568 FILL_FIELD(migrate_task_event, pid, event, data);
1569 FILL_FIELD(migrate_task_event, prio, event, data);
1570 FILL_FIELD(migrate_task_event, cpu, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001571
1572 if (trace_handler->migrate_task_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001573 trace_handler->migrate_task_event(&migrate_task_event, session,
1574 event, cpu, timestamp, thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001575}
1576
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001577static void process_raw_event(union perf_event *raw_event __used,
1578 struct perf_session *session, void *data, int cpu,
1579 u64 timestamp, struct thread *thread)
Ingo Molnarec156762009-09-11 12:12:54 +02001580{
Ingo Molnarec156762009-09-11 12:12:54 +02001581 struct event *event;
1582 int type;
1583
Xiao Guangrongd8bd9e02009-12-07 12:06:29 +08001584
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001585 type = trace_parse_common_type(data);
Ingo Molnarec156762009-09-11 12:12:54 +02001586 event = trace_find_event(type);
1587
Ingo Molnarec156762009-09-11 12:12:54 +02001588 if (!strcmp(event->name, "sched_switch"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001589 process_sched_switch_event(data, session, event, cpu, timestamp, thread);
mingo39aeb522009-09-14 20:04:48 +02001590 if (!strcmp(event->name, "sched_stat_runtime"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001591 process_sched_runtime_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarec156762009-09-11 12:12:54 +02001592 if (!strcmp(event->name, "sched_wakeup"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001593 process_sched_wakeup_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001594 if (!strcmp(event->name, "sched_wakeup_new"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001595 process_sched_wakeup_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001596 if (!strcmp(event->name, "sched_process_fork"))
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001597 process_sched_fork_event(data, event, cpu, timestamp, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001598 if (!strcmp(event->name, "sched_process_exit"))
1599 process_sched_exit_event(event, cpu, timestamp, thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001600 if (!strcmp(event->name, "sched_migrate_task"))
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001601 process_sched_migrate_task_event(data, session, event, cpu, timestamp, thread);
Ingo Molnarec156762009-09-11 12:12:54 +02001602}
1603
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001604static int process_sample_event(union perf_event *event,
1605 struct perf_sample *sample,
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001606 struct perf_evsel *evsel __used,
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001607 struct perf_session *session)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001608{
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001609 struct thread *thread;
Arnaldo Carvalho de Meloa80deb62009-09-28 15:23:51 -03001610
Arnaldo Carvalho de Meloc0198792009-12-14 14:23:00 -02001611 if (!(session->sample_type & PERF_SAMPLE_RAW))
Arnaldo Carvalho de Meloa80deb62009-09-28 15:23:51 -03001612 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001613
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001614 thread = perf_session__findnew(session, sample->pid);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001615 if (thread == NULL) {
Arnaldo Carvalho de Melo6beba7a2009-10-21 17:34:06 -02001616 pr_debug("problem processing %d event, skipping it.\n",
1617 event->header.type);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001618 return -1;
1619 }
1620
Julia Lawallf39cdf22009-10-17 08:43:17 +02001621 dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
1622
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001623 if (profile_cpu != -1 && profile_cpu != (int)sample->cpu)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001624 return 0;
1625
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001626 process_raw_event(event, session, sample->raw_data, sample->cpu,
1627 sample->time, thread);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001628
1629 return 0;
1630}
1631
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -02001632static struct perf_event_ops event_ops = {
Frederic Weisbeckera64eae72010-04-24 00:29:40 +02001633 .sample = process_sample_event,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001634 .comm = perf_event__process_comm,
1635 .lost = perf_event__process_lost,
1636 .fork = perf_event__process_task,
Frederic Weisbeckera64eae72010-04-24 00:29:40 +02001637 .ordered_samples = true,
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001638};
1639
Ingo Molnar46f392c2009-09-12 10:08:34 +02001640static int read_events(void)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001641{
Arnaldo Carvalho de Melod549c762009-12-27 21:37:02 -02001642 int err = -EINVAL;
Ian Munsie21ef97f2010-12-10 14:09:16 +11001643 struct perf_session *session = perf_session__new(input_name, O_RDONLY,
1644 0, false, &event_ops);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001645 if (session == NULL)
1646 return -ENOMEM;
1647
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001648 if (perf_session__has_traces(session, "record -R")) {
Arnaldo Carvalho de Melod549c762009-12-27 21:37:02 -02001649 err = perf_session__process_events(session, &event_ops);
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001650 nr_events = session->hists.stats.nr_events[0];
1651 nr_lost_events = session->hists.stats.total_lost;
1652 nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST];
1653 }
Arnaldo Carvalho de Melod549c762009-12-27 21:37:02 -02001654
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001655 perf_session__delete(session);
1656 return err;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001657}
1658
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001659static void print_bad_events(void)
1660{
1661 if (nr_unordered_timestamps && nr_timestamps) {
1662 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
1663 (double)nr_unordered_timestamps/(double)nr_timestamps*100.0,
1664 nr_unordered_timestamps, nr_timestamps);
1665 }
1666 if (nr_lost_events && nr_events) {
1667 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
1668 (double)nr_lost_events/(double)nr_events*100.0,
1669 nr_lost_events, nr_events, nr_lost_chunks);
1670 }
1671 if (nr_state_machine_bugs && nr_timestamps) {
1672 printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)",
1673 (double)nr_state_machine_bugs/(double)nr_timestamps*100.0,
1674 nr_state_machine_bugs, nr_timestamps);
1675 if (nr_lost_events)
1676 printf(" (due to lost events?)");
1677 printf("\n");
1678 }
1679 if (nr_context_switch_bugs && nr_timestamps) {
1680 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
1681 (double)nr_context_switch_bugs/(double)nr_timestamps*100.0,
1682 nr_context_switch_bugs, nr_timestamps);
1683 if (nr_lost_events)
1684 printf(" (due to lost events?)");
1685 printf("\n");
1686 }
1687}
1688
1689static void __cmd_lat(void)
1690{
1691 struct rb_node *next;
1692
1693 setup_pager();
1694 read_events();
1695 sort_lat();
1696
Frederic Weisbecker37863102009-12-09 21:40:08 +01001697 printf("\n ---------------------------------------------------------------------------------------------------------------\n");
1698 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
1699 printf(" ---------------------------------------------------------------------------------------------------------------\n");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001700
1701 next = rb_first(&sorted_atom_root);
1702
1703 while (next) {
1704 struct work_atoms *work_list;
1705
1706 work_list = rb_entry(next, struct work_atoms, node);
1707 output_lat_thread(work_list);
1708 next = rb_next(next);
1709 }
1710
1711 printf(" -----------------------------------------------------------------------------------------\n");
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001712 printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001713 (double)all_runtime/1e6, all_count);
1714
1715 printf(" ---------------------------------------------------\n");
1716
1717 print_bad_events();
1718 printf("\n");
1719
1720}
1721
1722static struct trace_sched_handler map_ops = {
1723 .wakeup_event = NULL,
1724 .switch_event = map_switch_event,
1725 .runtime_event = NULL,
1726 .fork_event = NULL,
1727};
1728
1729static void __cmd_map(void)
1730{
Ingo Molnar40749d02009-09-17 18:24:55 +02001731 max_cpu = sysconf(_SC_NPROCESSORS_CONF);
1732
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001733 setup_pager();
1734 read_events();
1735 print_bad_events();
1736}
1737
1738static void __cmd_replay(void)
1739{
1740 unsigned long i;
1741
1742 calibrate_run_measurement_overhead();
1743 calibrate_sleep_measurement_overhead();
1744
1745 test_calibrations();
1746
1747 read_events();
1748
1749 printf("nr_run_events: %ld\n", nr_run_events);
1750 printf("nr_sleep_events: %ld\n", nr_sleep_events);
1751 printf("nr_wakeup_events: %ld\n", nr_wakeup_events);
1752
1753 if (targetless_wakeups)
1754 printf("target-less wakeups: %ld\n", targetless_wakeups);
1755 if (multitarget_wakeups)
1756 printf("multi-target wakeups: %ld\n", multitarget_wakeups);
1757 if (nr_run_events_optimized)
1758 printf("run atoms optimized: %ld\n",
1759 nr_run_events_optimized);
1760
1761 print_task_traces();
1762 add_cross_task_wakeups();
1763
1764 create_tasks();
1765 printf("------------------------------------------------------------\n");
1766 for (i = 0; i < replay_repeat; i++)
1767 run_one_test();
1768}
1769
1770
Ingo Molnar46f392c2009-09-12 10:08:34 +02001771static const char * const sched_usage[] = {
Mike Galbraith4b77a722009-09-18 08:22:24 +02001772 "perf sched [<options>] {record|latency|map|replay|trace}",
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001773 NULL
1774};
1775
Ingo Molnarf2858d82009-09-11 12:12:54 +02001776static const struct option sched_options[] = {
Mike Galbraith4b77a722009-09-18 08:22:24 +02001777 OPT_STRING('i', "input", &input_name, "file",
1778 "input file name"),
Ian Munsiec0555642010-04-13 18:37:33 +10001779 OPT_INCR('v', "verbose", &verbose,
Ingo Molnarf2858d82009-09-11 12:12:54 +02001780 "be more verbose (show symbol address, etc)"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001781 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1782 "dump raw trace in ASCII"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001783 OPT_END()
1784};
1785
1786static const char * const latency_usage[] = {
1787 "perf sched latency [<options>]",
1788 NULL
1789};
1790
1791static const struct option latency_options[] = {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001792 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1793 "sort by key(s): runtime, switch, avg, max"),
Ian Munsiec0555642010-04-13 18:37:33 +10001794 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001795 "be more verbose (show symbol address, etc)"),
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001796 OPT_INTEGER('C', "CPU", &profile_cpu,
1797 "CPU to profile on"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001798 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1799 "dump raw trace in ASCII"),
1800 OPT_END()
1801};
1802
1803static const char * const replay_usage[] = {
1804 "perf sched replay [<options>]",
1805 NULL
1806};
1807
1808static const struct option replay_options[] = {
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -03001809 OPT_UINTEGER('r', "repeat", &replay_repeat,
1810 "repeat the workload replay N times (-1: infinite)"),
Ian Munsiec0555642010-04-13 18:37:33 +10001811 OPT_INCR('v', "verbose", &verbose,
Ingo Molnarf2858d82009-09-11 12:12:54 +02001812 "be more verbose (show symbol address, etc)"),
1813 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1814 "dump raw trace in ASCII"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001815 OPT_END()
1816};
1817
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001818static void setup_sorting(void)
1819{
1820 char *tmp, *tok, *str = strdup(sort_order);
1821
1822 for (tok = strtok_r(str, ", ", &tmp);
1823 tok; tok = strtok_r(NULL, ", ", &tmp)) {
1824 if (sort_dimension__add(tok, &sort_list) < 0) {
1825 error("Unknown --sort key: `%s'", tok);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001826 usage_with_options(latency_usage, latency_options);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001827 }
1828 }
1829
1830 free(str);
1831
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001832 sort_dimension__add("pid", &cmp_pid);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001833}
1834
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001835static const char *record_args[] = {
1836 "record",
1837 "-a",
1838 "-R",
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001839 "-f",
Ingo Molnardc02bf72009-09-16 13:45:00 +02001840 "-m", "1024",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001841 "-c", "1",
Stephane Eranian97101182011-01-12 10:29:05 +01001842 "-e", "sched:sched_switch",
1843 "-e", "sched:sched_stat_wait",
1844 "-e", "sched:sched_stat_sleep",
1845 "-e", "sched:sched_stat_iowait",
1846 "-e", "sched:sched_stat_runtime",
1847 "-e", "sched:sched_process_exit",
1848 "-e", "sched:sched_process_fork",
1849 "-e", "sched:sched_wakeup",
1850 "-e", "sched:sched_migrate_task",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001851};
1852
1853static int __cmd_record(int argc, const char **argv)
1854{
1855 unsigned int rec_argc, i, j;
1856 const char **rec_argv;
1857
1858 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1859 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1860
Arnaldo Carvalho de Meloe462dc52011-01-10 10:48:47 -02001861 if (rec_argv == NULL)
Chris Samuelce47dc52010-11-13 13:35:06 +11001862 return -ENOMEM;
1863
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001864 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1865 rec_argv[i] = strdup(record_args[i]);
1866
1867 for (j = 1; j < (unsigned int)argc; j++, i++)
1868 rec_argv[i] = argv[j];
1869
1870 BUG_ON(i != rec_argc);
1871
1872 return cmd_record(i, rec_argv, NULL);
1873}
1874
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001875int cmd_sched(int argc, const char **argv, const char *prefix __used)
1876{
Ingo Molnarf2858d82009-09-11 12:12:54 +02001877 argc = parse_options(argc, argv, sched_options, sched_usage,
1878 PARSE_OPT_STOP_AT_NON_OPTION);
1879 if (!argc)
1880 usage_with_options(sched_usage, sched_options);
1881
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001882 /*
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001883 * Aliased to 'perf script' for now:
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001884 */
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001885 if (!strcmp(argv[0], "script"))
1886 return cmd_script(argc, argv, prefix);
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001887
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -02001888 symbol__init();
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001889 if (!strncmp(argv[0], "rec", 3)) {
1890 return __cmd_record(argc, argv);
1891 } else if (!strncmp(argv[0], "lat", 3)) {
Ingo Molnarf2858d82009-09-11 12:12:54 +02001892 trace_handler = &lat_ops;
1893 if (argc > 1) {
1894 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
1895 if (argc)
1896 usage_with_options(latency_usage, latency_options);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001897 }
Ingo Molnarb5fae122009-09-11 12:12:54 +02001898 setup_sorting();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001899 __cmd_lat();
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001900 } else if (!strcmp(argv[0], "map")) {
1901 trace_handler = &map_ops;
1902 setup_sorting();
1903 __cmd_map();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001904 } else if (!strncmp(argv[0], "rep", 3)) {
1905 trace_handler = &replay_ops;
1906 if (argc) {
1907 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
1908 if (argc)
1909 usage_with_options(replay_usage, replay_options);
1910 }
1911 __cmd_replay();
1912 } else {
1913 usage_with_options(sched_usage, sched_options);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001914 }
1915
Ingo Molnarec156762009-09-11 12:12:54 +02001916 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001917}