blob: 1cad3af4bf4c9ff0f1813ba1cb826f18d3993a42 [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"
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02005#include "util/evlist.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02006#include "util/cache.h"
Arnaldo Carvalho de Meloe3f42602011-11-16 17:02:54 -02007#include "util/evsel.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +02008#include "util/symbol.h"
9#include "util/thread.h"
10#include "util/header.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020011#include "util/session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020012#include "util/tool.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020013
14#include "util/parse-options.h"
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020015#include "util/trace-event.h"
Ingo Molnar0a02ad92009-09-11 12:12:54 +020016
Ingo Molnar0a02ad92009-09-11 12:12:54 +020017#include "util/debug.h"
18
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020019#include <sys/prctl.h>
Markus Trippelsdorf7b78f132012-04-04 10:45:27 +020020#include <sys/resource.h>
Ingo Molnar0a02ad92009-09-11 12:12:54 +020021
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020022#include <semaphore.h>
23#include <pthread.h>
24#include <math.h>
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +020025
Robert Richterefad1412011-12-07 10:02:54 +010026static const char *input_name;
Ingo Molnar0a02ad92009-09-11 12:12:54 +020027
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +020028static char default_sort_order[] = "avg, max, switch, runtime";
Arnaldo Carvalho de Meloedb7c602010-05-17 16:22:41 -030029static const char *sort_order = default_sort_order;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +020030
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020031static int profile_cpu = -1;
32
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020033#define PR_SET_NAME 15 /* Set process name */
34#define MAX_CPUS 4096
Ingo Molnar0a02ad92009-09-11 12:12:54 +020035
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020036static u64 run_measurement_overhead;
37static u64 sleep_measurement_overhead;
Ingo Molnarec156762009-09-11 12:12:54 +020038
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020039#define COMM_LEN 20
40#define SYM_LEN 129
Ingo Molnarec156762009-09-11 12:12:54 +020041
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020042#define MAX_PID 65536
Ingo Molnarec156762009-09-11 12:12:54 +020043
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020044static unsigned long nr_tasks;
Ingo Molnarec156762009-09-11 12:12:54 +020045
mingo39aeb522009-09-14 20:04:48 +020046struct sched_atom;
Ingo Molnarec156762009-09-11 12:12:54 +020047
48struct task_desc {
49 unsigned long nr;
50 unsigned long pid;
51 char comm[COMM_LEN];
52
53 unsigned long nr_events;
54 unsigned long curr_event;
mingo39aeb522009-09-14 20:04:48 +020055 struct sched_atom **atoms;
Ingo Molnarec156762009-09-11 12:12:54 +020056
57 pthread_t thread;
58 sem_t sleep_sem;
59
60 sem_t ready_for_work;
61 sem_t work_done_sem;
62
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020063 u64 cpu_usage;
Ingo Molnarec156762009-09-11 12:12:54 +020064};
65
66enum sched_event_type {
67 SCHED_EVENT_RUN,
68 SCHED_EVENT_SLEEP,
69 SCHED_EVENT_WAKEUP,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +020070 SCHED_EVENT_MIGRATION,
Ingo Molnarec156762009-09-11 12:12:54 +020071};
72
mingo39aeb522009-09-14 20:04:48 +020073struct sched_atom {
Ingo Molnarec156762009-09-11 12:12:54 +020074 enum sched_event_type type;
Arnaldo Carvalho de Meloeed05fe2010-04-05 12:53:45 -030075 int specific_wait;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020076 u64 timestamp;
77 u64 duration;
Ingo Molnarec156762009-09-11 12:12:54 +020078 unsigned long nr;
Ingo Molnarec156762009-09-11 12:12:54 +020079 sem_t *wait_sem;
80 struct task_desc *wakee;
81};
82
83static struct task_desc *pid_to_task[MAX_PID];
84
85static struct task_desc **tasks;
86
87static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020088static u64 start_time;
Ingo Molnarec156762009-09-11 12:12:54 +020089
90static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
91
92static unsigned long nr_run_events;
93static unsigned long nr_sleep_events;
94static unsigned long nr_wakeup_events;
95
96static unsigned long nr_sleep_corrections;
97static unsigned long nr_run_events_optimized;
98
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +020099static unsigned long targetless_wakeups;
100static unsigned long multitarget_wakeups;
101
102static u64 cpu_usage;
103static u64 runavg_cpu_usage;
104static u64 parent_cpu_usage;
105static u64 runavg_parent_cpu_usage;
106
107static unsigned long nr_runs;
108static u64 sum_runtime;
109static u64 sum_fluct;
110static u64 run_avg;
111
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -0300112static unsigned int replay_repeat = 10;
Ingo Molnarea57c4f2009-09-13 18:15:54 +0200113static unsigned long nr_timestamps;
Ingo Molnardc02bf72009-09-16 13:45:00 +0200114static unsigned long nr_unordered_timestamps;
115static unsigned long nr_state_machine_bugs;
Ingo Molnarc8a37752009-09-16 14:07:00 +0200116static unsigned long nr_context_switch_bugs;
Ingo Molnardc02bf72009-09-16 13:45:00 +0200117static unsigned long nr_events;
118static unsigned long nr_lost_chunks;
119static unsigned long nr_lost_events;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200120
121#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
122
123enum thread_state {
124 THREAD_SLEEPING = 0,
125 THREAD_WAIT_CPU,
126 THREAD_SCHED_IN,
127 THREAD_IGNORE
128};
129
130struct work_atom {
131 struct list_head list;
132 enum thread_state state;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200133 u64 sched_out_time;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200134 u64 wake_up_time;
135 u64 sched_in_time;
136 u64 runtime;
137};
138
mingo39aeb522009-09-14 20:04:48 +0200139struct work_atoms {
140 struct list_head work_list;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200141 struct thread *thread;
142 struct rb_node node;
143 u64 max_lat;
Frederic Weisbecker37863102009-12-09 21:40:08 +0100144 u64 max_lat_at;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200145 u64 total_lat;
146 u64 nb_atoms;
147 u64 total_runtime;
148};
149
mingo39aeb522009-09-14 20:04:48 +0200150typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200151
152static struct rb_root atom_root, sorted_atom_root;
153
154static u64 all_runtime;
155static u64 all_count;
156
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200157
158static u64 get_nsecs(void)
159{
160 struct timespec ts;
161
162 clock_gettime(CLOCK_MONOTONIC, &ts);
163
164 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
165}
166
167static void burn_nsecs(u64 nsecs)
168{
169 u64 T0 = get_nsecs(), T1;
170
171 do {
172 T1 = get_nsecs();
173 } while (T1 + run_measurement_overhead < T0 + nsecs);
174}
175
176static void sleep_nsecs(u64 nsecs)
177{
178 struct timespec ts;
179
180 ts.tv_nsec = nsecs % 999999999;
181 ts.tv_sec = nsecs / 999999999;
182
183 nanosleep(&ts, NULL);
184}
185
186static void calibrate_run_measurement_overhead(void)
187{
188 u64 T0, T1, delta, min_delta = 1000000000ULL;
189 int i;
190
191 for (i = 0; i < 10; i++) {
192 T0 = get_nsecs();
193 burn_nsecs(0);
194 T1 = get_nsecs();
195 delta = T1-T0;
196 min_delta = min(min_delta, delta);
197 }
198 run_measurement_overhead = min_delta;
199
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200200 printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200201}
202
203static void calibrate_sleep_measurement_overhead(void)
204{
205 u64 T0, T1, delta, min_delta = 1000000000ULL;
206 int i;
207
208 for (i = 0; i < 10; i++) {
209 T0 = get_nsecs();
210 sleep_nsecs(10000);
211 T1 = get_nsecs();
212 delta = T1-T0;
213 min_delta = min(min_delta, delta);
214 }
215 min_delta -= 10000;
216 sleep_measurement_overhead = min_delta;
217
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200218 printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200219}
220
mingo39aeb522009-09-14 20:04:48 +0200221static struct sched_atom *
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200222get_new_event(struct task_desc *task, u64 timestamp)
Ingo Molnarec156762009-09-11 12:12:54 +0200223{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200224 struct sched_atom *event = zalloc(sizeof(*event));
Ingo Molnarec156762009-09-11 12:12:54 +0200225 unsigned long idx = task->nr_events;
226 size_t size;
227
228 event->timestamp = timestamp;
229 event->nr = idx;
230
231 task->nr_events++;
mingo39aeb522009-09-14 20:04:48 +0200232 size = sizeof(struct sched_atom *) * task->nr_events;
233 task->atoms = realloc(task->atoms, size);
234 BUG_ON(!task->atoms);
Ingo Molnarec156762009-09-11 12:12:54 +0200235
mingo39aeb522009-09-14 20:04:48 +0200236 task->atoms[idx] = event;
Ingo Molnarec156762009-09-11 12:12:54 +0200237
238 return event;
239}
240
mingo39aeb522009-09-14 20:04:48 +0200241static struct sched_atom *last_event(struct task_desc *task)
Ingo Molnarec156762009-09-11 12:12:54 +0200242{
243 if (!task->nr_events)
244 return NULL;
245
mingo39aeb522009-09-14 20:04:48 +0200246 return task->atoms[task->nr_events - 1];
Ingo Molnarec156762009-09-11 12:12:54 +0200247}
248
249static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200250add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration)
Ingo Molnarec156762009-09-11 12:12:54 +0200251{
mingo39aeb522009-09-14 20:04:48 +0200252 struct sched_atom *event, *curr_event = last_event(task);
Ingo Molnarec156762009-09-11 12:12:54 +0200253
254 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200255 * optimize an existing RUN event by merging this one
256 * to it:
257 */
Ingo Molnarec156762009-09-11 12:12:54 +0200258 if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
259 nr_run_events_optimized++;
260 curr_event->duration += duration;
261 return;
262 }
263
264 event = get_new_event(task, timestamp);
265
266 event->type = SCHED_EVENT_RUN;
267 event->duration = duration;
268
269 nr_run_events++;
270}
271
Ingo Molnarec156762009-09-11 12:12:54 +0200272static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200273add_sched_event_wakeup(struct task_desc *task, u64 timestamp,
Ingo Molnarec156762009-09-11 12:12:54 +0200274 struct task_desc *wakee)
275{
mingo39aeb522009-09-14 20:04:48 +0200276 struct sched_atom *event, *wakee_event;
Ingo Molnarec156762009-09-11 12:12:54 +0200277
278 event = get_new_event(task, timestamp);
279 event->type = SCHED_EVENT_WAKEUP;
280 event->wakee = wakee;
281
282 wakee_event = last_event(wakee);
283 if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
284 targetless_wakeups++;
285 return;
286 }
287 if (wakee_event->wait_sem) {
288 multitarget_wakeups++;
289 return;
290 }
291
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200292 wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
Ingo Molnarec156762009-09-11 12:12:54 +0200293 sem_init(wakee_event->wait_sem, 0, 0);
294 wakee_event->specific_wait = 1;
295 event->wait_sem = wakee_event->wait_sem;
296
297 nr_wakeup_events++;
298}
299
300static void
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200301add_sched_event_sleep(struct task_desc *task, u64 timestamp,
Ingo Molnarad236fd2009-09-11 12:12:54 +0200302 u64 task_state __used)
Ingo Molnarec156762009-09-11 12:12:54 +0200303{
mingo39aeb522009-09-14 20:04:48 +0200304 struct sched_atom *event = get_new_event(task, timestamp);
Ingo Molnarec156762009-09-11 12:12:54 +0200305
306 event->type = SCHED_EVENT_SLEEP;
307
308 nr_sleep_events++;
309}
310
311static struct task_desc *register_pid(unsigned long pid, const char *comm)
312{
313 struct task_desc *task;
314
315 BUG_ON(pid >= MAX_PID);
316
317 task = pid_to_task[pid];
318
319 if (task)
320 return task;
321
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200322 task = zalloc(sizeof(*task));
Ingo Molnarec156762009-09-11 12:12:54 +0200323 task->pid = pid;
324 task->nr = nr_tasks;
325 strcpy(task->comm, comm);
326 /*
327 * every task starts in sleeping state - this gets ignored
328 * if there's no wakeup pointing to this sleep state:
329 */
330 add_sched_event_sleep(task, 0, 0);
331
332 pid_to_task[pid] = task;
333 nr_tasks++;
334 tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *));
335 BUG_ON(!tasks);
336 tasks[task->nr] = task;
337
Ingo Molnarad236fd2009-09-11 12:12:54 +0200338 if (verbose)
339 printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm);
Ingo Molnarec156762009-09-11 12:12:54 +0200340
341 return task;
342}
343
344
Ingo Molnarec156762009-09-11 12:12:54 +0200345static void print_task_traces(void)
346{
347 struct task_desc *task;
348 unsigned long i;
349
350 for (i = 0; i < nr_tasks; i++) {
351 task = tasks[i];
Ingo Molnarad236fd2009-09-11 12:12:54 +0200352 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
Ingo Molnarec156762009-09-11 12:12:54 +0200353 task->nr, task->comm, task->pid, task->nr_events);
354 }
355}
356
357static void add_cross_task_wakeups(void)
358{
359 struct task_desc *task1, *task2;
360 unsigned long i, j;
361
362 for (i = 0; i < nr_tasks; i++) {
363 task1 = tasks[i];
364 j = i + 1;
365 if (j == nr_tasks)
366 j = 0;
367 task2 = tasks[j];
368 add_sched_event_wakeup(task1, 0, task2);
369 }
370}
371
372static void
mingo39aeb522009-09-14 20:04:48 +0200373process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom)
Ingo Molnarec156762009-09-11 12:12:54 +0200374{
375 int ret = 0;
Ingo Molnarec156762009-09-11 12:12:54 +0200376
mingo39aeb522009-09-14 20:04:48 +0200377 switch (atom->type) {
Ingo Molnarec156762009-09-11 12:12:54 +0200378 case SCHED_EVENT_RUN:
mingo39aeb522009-09-14 20:04:48 +0200379 burn_nsecs(atom->duration);
Ingo Molnarec156762009-09-11 12:12:54 +0200380 break;
381 case SCHED_EVENT_SLEEP:
mingo39aeb522009-09-14 20:04:48 +0200382 if (atom->wait_sem)
383 ret = sem_wait(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200384 BUG_ON(ret);
385 break;
386 case SCHED_EVENT_WAKEUP:
mingo39aeb522009-09-14 20:04:48 +0200387 if (atom->wait_sem)
388 ret = sem_post(atom->wait_sem);
Ingo Molnarec156762009-09-11 12:12:54 +0200389 BUG_ON(ret);
390 break;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200391 case SCHED_EVENT_MIGRATION:
392 break;
Ingo Molnarec156762009-09-11 12:12:54 +0200393 default:
394 BUG_ON(1);
395 }
396}
397
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200398static u64 get_cpu_usage_nsec_parent(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200399{
400 struct rusage ru;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200401 u64 sum;
Ingo Molnarec156762009-09-11 12:12:54 +0200402 int err;
403
404 err = getrusage(RUSAGE_SELF, &ru);
405 BUG_ON(err);
406
407 sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
408 sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
409
410 return sum;
411}
412
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800413static int self_open_counters(void)
Ingo Molnarec156762009-09-11 12:12:54 +0200414{
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800415 struct perf_event_attr attr;
416 int fd;
417
418 memset(&attr, 0, sizeof(attr));
419
420 attr.type = PERF_TYPE_SOFTWARE;
421 attr.config = PERF_COUNT_SW_TASK_CLOCK;
422
423 fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
424
425 if (fd < 0)
426 die("Error: sys_perf_event_open() syscall returned"
427 "with %d (%s)\n", fd, strerror(errno));
428 return fd;
429}
430
431static u64 get_cpu_usage_nsec_self(int fd)
432{
433 u64 runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200434 int ret;
435
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800436 ret = read(fd, &runtime, sizeof(runtime));
437 BUG_ON(ret != sizeof(runtime));
Ingo Molnarec156762009-09-11 12:12:54 +0200438
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800439 return runtime;
Ingo Molnarec156762009-09-11 12:12:54 +0200440}
441
442static void *thread_func(void *ctx)
443{
444 struct task_desc *this_task = ctx;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200445 u64 cpu_usage_0, cpu_usage_1;
Ingo Molnarec156762009-09-11 12:12:54 +0200446 unsigned long i, ret;
447 char comm2[22];
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800448 int fd;
Ingo Molnarec156762009-09-11 12:12:54 +0200449
Ingo Molnarec156762009-09-11 12:12:54 +0200450 sprintf(comm2, ":%s", this_task->comm);
451 prctl(PR_SET_NAME, comm2);
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800452 fd = self_open_counters();
Ingo Molnarec156762009-09-11 12:12:54 +0200453
454again:
455 ret = sem_post(&this_task->ready_for_work);
456 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200457 ret = pthread_mutex_lock(&start_work_mutex);
458 BUG_ON(ret);
459 ret = pthread_mutex_unlock(&start_work_mutex);
460 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200461
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800462 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200463
464 for (i = 0; i < this_task->nr_events; i++) {
465 this_task->curr_event = i;
mingo39aeb522009-09-14 20:04:48 +0200466 process_sched_event(this_task, this_task->atoms[i]);
Ingo Molnarec156762009-09-11 12:12:54 +0200467 }
468
Xiao Guangrongc0c9e722009-12-09 17:51:30 +0800469 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
Ingo Molnarec156762009-09-11 12:12:54 +0200470 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
Ingo Molnarec156762009-09-11 12:12:54 +0200471 ret = sem_post(&this_task->work_done_sem);
472 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200473
474 ret = pthread_mutex_lock(&work_done_wait_mutex);
475 BUG_ON(ret);
476 ret = pthread_mutex_unlock(&work_done_wait_mutex);
477 BUG_ON(ret);
Ingo Molnarec156762009-09-11 12:12:54 +0200478
479 goto again;
480}
481
482static void create_tasks(void)
483{
484 struct task_desc *task;
485 pthread_attr_t attr;
486 unsigned long i;
487 int err;
488
489 err = pthread_attr_init(&attr);
490 BUG_ON(err);
Jiri Pirko12f7e032011-01-10 14:14:23 -0200491 err = pthread_attr_setstacksize(&attr,
492 (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
Ingo Molnarec156762009-09-11 12:12:54 +0200493 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{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500564 u64 T0, T1, delta, avg_delta, fluct;
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;
Ingo Molnarec156762009-09-11 12:12:54 +0200580 if (!run_avg)
581 run_avg = delta;
582 run_avg = (run_avg*9 + delta)/10;
583
Ingo Molnarad236fd2009-09-11 12:12:54 +0200584 printf("#%-3ld: %0.3f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200585 nr_runs, (double)delta/1000000.0);
586
Ingo Molnarad236fd2009-09-11 12:12:54 +0200587 printf("ravg: %0.2f, ",
Ingo Molnarec156762009-09-11 12:12:54 +0200588 (double)run_avg/1e6);
589
Ingo Molnarad236fd2009-09-11 12:12:54 +0200590 printf("cpu: %0.2f / %0.2f",
Ingo Molnarec156762009-09-11 12:12:54 +0200591 (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6);
592
593#if 0
594 /*
Ingo Molnarfbf94822009-09-11 12:12:54 +0200595 * rusage statistics done by the parent, these are less
596 * accurate than the sum_exec_runtime based statistics:
597 */
Ingo Molnarad236fd2009-09-11 12:12:54 +0200598 printf(" [%0.2f / %0.2f]",
Ingo Molnarec156762009-09-11 12:12:54 +0200599 (double)parent_cpu_usage/1e6,
600 (double)runavg_parent_cpu_usage/1e6);
601#endif
602
Ingo Molnarad236fd2009-09-11 12:12:54 +0200603 printf("\n");
Ingo Molnarec156762009-09-11 12:12:54 +0200604
605 if (nr_sleep_corrections)
Ingo Molnarad236fd2009-09-11 12:12:54 +0200606 printf(" (%ld sleep corrections)\n", nr_sleep_corrections);
Ingo Molnarec156762009-09-11 12:12:54 +0200607 nr_sleep_corrections = 0;
608}
609
610static void test_calibrations(void)
611{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200612 u64 T0, T1;
Ingo Molnarec156762009-09-11 12:12:54 +0200613
614 T0 = get_nsecs();
615 burn_nsecs(1e6);
616 T1 = get_nsecs();
617
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200618 printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200619
620 T0 = get_nsecs();
621 sleep_nsecs(1e6);
622 T1 = get_nsecs();
623
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200624 printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0);
Ingo Molnarec156762009-09-11 12:12:54 +0200625}
626
Frederic Weisbecker46538812009-09-12 02:43:45 +0200627#define FILL_FIELD(ptr, field, event, data) \
628 ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
629
630#define FILL_ARRAY(ptr, array, event, data) \
631do { \
632 void *__array = raw_field_ptr(event, #array, data); \
633 memcpy(ptr.array, __array, sizeof(ptr.array)); \
634} while(0)
635
636#define FILL_COMMON_FIELDS(ptr, event, data) \
637do { \
638 FILL_FIELD(ptr, common_type, event, data); \
639 FILL_FIELD(ptr, common_flags, event, data); \
640 FILL_FIELD(ptr, common_preempt_count, event, data); \
641 FILL_FIELD(ptr, common_pid, event, data); \
642 FILL_FIELD(ptr, common_tgid, event, data); \
643} while (0)
644
Ingo Molnarfbf94822009-09-11 12:12:54 +0200645
Ingo Molnarec156762009-09-11 12:12:54 +0200646
Ingo Molnarfbf94822009-09-11 12:12:54 +0200647struct trace_switch_event {
648 u32 size;
649
650 u16 common_type;
651 u8 common_flags;
652 u8 common_preempt_count;
653 u32 common_pid;
654 u32 common_tgid;
655
656 char prev_comm[16];
657 u32 prev_pid;
658 u32 prev_prio;
659 u64 prev_state;
660 char next_comm[16];
661 u32 next_pid;
662 u32 next_prio;
663};
664
mingo39aeb522009-09-14 20:04:48 +0200665struct trace_runtime_event {
666 u32 size;
667
668 u16 common_type;
669 u8 common_flags;
670 u8 common_preempt_count;
671 u32 common_pid;
672 u32 common_tgid;
673
674 char comm[16];
675 u32 pid;
676 u64 runtime;
677 u64 vruntime;
678};
Ingo Molnarfbf94822009-09-11 12:12:54 +0200679
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200680struct trace_wakeup_event {
681 u32 size;
682
683 u16 common_type;
684 u8 common_flags;
685 u8 common_preempt_count;
686 u32 common_pid;
687 u32 common_tgid;
688
689 char comm[16];
690 u32 pid;
691
692 u32 prio;
693 u32 success;
694 u32 cpu;
695};
696
697struct trace_fork_event {
698 u32 size;
699
700 u16 common_type;
701 u8 common_flags;
702 u8 common_preempt_count;
703 u32 common_pid;
704 u32 common_tgid;
705
706 char parent_comm[16];
707 u32 parent_pid;
708 char child_comm[16];
709 u32 child_pid;
710};
711
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200712struct trace_migrate_task_event {
713 u32 size;
714
715 u16 common_type;
716 u8 common_flags;
717 u8 common_preempt_count;
718 u32 common_pid;
719 u32 common_tgid;
720
721 char comm[16];
722 u32 pid;
723
724 u32 prio;
725 u32 cpu;
726};
727
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200728struct trace_sched_handler {
729 void (*switch_event)(struct trace_switch_event *,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200730 struct machine *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200731 struct event *,
732 int cpu,
733 u64 timestamp,
734 struct thread *thread);
735
mingo39aeb522009-09-14 20:04:48 +0200736 void (*runtime_event)(struct trace_runtime_event *,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200737 struct machine *,
mingo39aeb522009-09-14 20:04:48 +0200738 struct event *,
739 int cpu,
740 u64 timestamp,
741 struct thread *thread);
742
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200743 void (*wakeup_event)(struct trace_wakeup_event *,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200744 struct machine *,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200745 struct event *,
746 int cpu,
747 u64 timestamp,
748 struct thread *thread);
749
750 void (*fork_event)(struct trace_fork_event *,
751 struct event *,
752 int cpu,
753 u64 timestamp,
754 struct thread *thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200755
756 void (*migrate_task_event)(struct trace_migrate_task_event *,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200757 struct machine *machine,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +0200758 struct event *,
759 int cpu,
760 u64 timestamp,
761 struct thread *thread);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200762};
763
Ingo Molnarfbf94822009-09-11 12:12:54 +0200764
765static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200766replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200767 struct machine *machine __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200768 struct event *event,
769 int cpu __used,
770 u64 timestamp __used,
771 struct thread *thread __used)
Ingo Molnarec156762009-09-11 12:12:54 +0200772{
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200773 struct task_desc *waker, *wakee;
774
775 if (verbose) {
776 printf("sched_wakeup event %p\n", event);
777
778 printf(" ... pid %d woke up %s/%d\n",
779 wakeup_event->common_pid,
780 wakeup_event->comm,
781 wakeup_event->pid);
782 }
783
784 waker = register_pid(wakeup_event->common_pid, "<unknown>");
785 wakee = register_pid(wakeup_event->pid, wakeup_event->comm);
786
787 add_sched_event_wakeup(waker, timestamp, wakee);
788}
789
Ingo Molnard1153382009-09-14 18:22:53 +0200790static u64 cpu_last_switched[MAX_CPUS];
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200791
792static void
793replay_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200794 struct machine *machine __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200795 struct event *event,
796 int cpu,
797 u64 timestamp,
798 struct thread *thread __used)
799{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -0500800 struct task_desc *prev, __used *next;
Ingo Molnarfbf94822009-09-11 12:12:54 +0200801 u64 timestamp0;
802 s64 delta;
803
Ingo Molnarad236fd2009-09-11 12:12:54 +0200804 if (verbose)
805 printf("sched_switch event %p\n", event);
806
Ingo Molnarfbf94822009-09-11 12:12:54 +0200807 if (cpu >= MAX_CPUS || cpu < 0)
808 return;
809
810 timestamp0 = cpu_last_switched[cpu];
811 if (timestamp0)
812 delta = timestamp - timestamp0;
813 else
814 delta = 0;
815
816 if (delta < 0)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200817 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200818
Ingo Molnarad236fd2009-09-11 12:12:54 +0200819 if (verbose) {
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200820 printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200821 switch_event->prev_comm, switch_event->prev_pid,
822 switch_event->next_comm, switch_event->next_pid,
Ingo Molnarad236fd2009-09-11 12:12:54 +0200823 delta);
824 }
Ingo Molnarfbf94822009-09-11 12:12:54 +0200825
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200826 prev = register_pid(switch_event->prev_pid, switch_event->prev_comm);
827 next = register_pid(switch_event->next_pid, switch_event->next_comm);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200828
829 cpu_last_switched[cpu] = timestamp;
830
831 add_sched_event_run(prev, timestamp, delta);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200832 add_sched_event_sleep(prev, timestamp, switch_event->prev_state);
Ingo Molnarfbf94822009-09-11 12:12:54 +0200833}
834
Ingo Molnarfbf94822009-09-11 12:12:54 +0200835
836static void
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200837replay_fork_event(struct trace_fork_event *fork_event,
838 struct event *event,
839 int cpu __used,
840 u64 timestamp __used,
841 struct thread *thread __used)
842{
843 if (verbose) {
844 printf("sched_fork event %p\n", event);
845 printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid);
846 printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid);
847 }
848 register_pid(fork_event->parent_pid, fork_event->parent_comm);
849 register_pid(fork_event->child_pid, fork_event->child_comm);
850}
851
852static struct trace_sched_handler replay_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +0200853 .wakeup_event = replay_wakeup_event,
854 .switch_event = replay_switch_event,
855 .fork_event = replay_fork_event,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +0200856};
857
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200858struct sort_dimension {
859 const char *name;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200860 sort_fn_t cmp;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200861 struct list_head list;
862};
863
864static LIST_HEAD(cmp_pid);
865
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200866static int
mingo39aeb522009-09-14 20:04:48 +0200867thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200868{
869 struct sort_dimension *sort;
870 int ret = 0;
871
Ingo Molnarb5fae122009-09-11 12:12:54 +0200872 BUG_ON(list_empty(list));
873
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200874 list_for_each_entry(sort, list, list) {
875 ret = sort->cmp(l, r);
876 if (ret)
877 return ret;
878 }
879
880 return ret;
881}
882
mingo39aeb522009-09-14 20:04:48 +0200883static struct work_atoms *
Ingo Molnarb5fae122009-09-11 12:12:54 +0200884thread_atoms_search(struct rb_root *root, struct thread *thread,
885 struct list_head *sort_list)
886{
887 struct rb_node *node = root->rb_node;
mingo39aeb522009-09-14 20:04:48 +0200888 struct work_atoms key = { .thread = thread };
Ingo Molnarb5fae122009-09-11 12:12:54 +0200889
890 while (node) {
mingo39aeb522009-09-14 20:04:48 +0200891 struct work_atoms *atoms;
Ingo Molnarb5fae122009-09-11 12:12:54 +0200892 int cmp;
893
mingo39aeb522009-09-14 20:04:48 +0200894 atoms = container_of(node, struct work_atoms, node);
Ingo Molnarb5fae122009-09-11 12:12:54 +0200895
896 cmp = thread_lat_cmp(sort_list, &key, atoms);
897 if (cmp > 0)
898 node = node->rb_left;
899 else if (cmp < 0)
900 node = node->rb_right;
901 else {
902 BUG_ON(thread != atoms->thread);
903 return atoms;
904 }
905 }
906 return NULL;
907}
908
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200909static void
mingo39aeb522009-09-14 20:04:48 +0200910__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200911 struct list_head *sort_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200912{
913 struct rb_node **new = &(root->rb_node), *parent = NULL;
914
915 while (*new) {
mingo39aeb522009-09-14 20:04:48 +0200916 struct work_atoms *this;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200917 int cmp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200918
mingo39aeb522009-09-14 20:04:48 +0200919 this = container_of(*new, struct work_atoms, node);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200920 parent = *new;
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200921
922 cmp = thread_lat_cmp(sort_list, data, this);
923
924 if (cmp > 0)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200925 new = &((*new)->rb_left);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200926 else
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +0200927 new = &((*new)->rb_right);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200928 }
929
930 rb_link_node(&data->node, parent, new);
931 rb_insert_color(&data->node, root);
932}
933
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200934static void thread_atoms_insert(struct thread *thread)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200935{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200936 struct work_atoms *atoms = zalloc(sizeof(*atoms));
Frederic Weisbecker17562202009-09-12 23:11:32 +0200937 if (!atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200938 die("No memory");
939
Frederic Weisbecker17562202009-09-12 23:11:32 +0200940 atoms->thread = thread;
mingo39aeb522009-09-14 20:04:48 +0200941 INIT_LIST_HEAD(&atoms->work_list);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200942 __thread_latency_insert(&atom_root, atoms, &cmp_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200943}
944
945static void
946latency_fork_event(struct trace_fork_event *fork_event __used,
947 struct event *event __used,
948 int cpu __used,
949 u64 timestamp __used,
950 struct thread *thread __used)
951{
952 /* should insert the newcomer */
953}
954
Ingo Molnarea92ed52009-09-12 10:08:34 +0200955__used
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200956static char sched_out_state(struct trace_switch_event *switch_event)
957{
958 const char *str = TASK_STATE_TO_CHAR_STR;
959
960 return str[switch_event->prev_state];
961}
962
963static void
mingo39aeb522009-09-14 20:04:48 +0200964add_sched_out_event(struct work_atoms *atoms,
965 char run_state,
966 u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200967{
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200968 struct work_atom *atom = zalloc(sizeof(*atom));
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200969 if (!atom)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200970 die("Non memory");
971
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200972 atom->sched_out_time = timestamp;
973
mingo39aeb522009-09-14 20:04:48 +0200974 if (run_state == 'R') {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200975 atom->state = THREAD_WAIT_CPU;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +0200976 atom->wake_up_time = atom->sched_out_time;
Frederic Weisbeckerc6ced612009-09-13 00:46:19 +0200977 }
978
mingo39aeb522009-09-14 20:04:48 +0200979 list_add_tail(&atom->list, &atoms->work_list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200980}
981
982static void
mingo39aeb522009-09-14 20:04:48 +0200983add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used)
984{
985 struct work_atom *atom;
986
987 BUG_ON(list_empty(&atoms->work_list));
988
989 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
990
991 atom->runtime += delta;
992 atoms->total_runtime += delta;
993}
994
995static void
996add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +0200997{
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +0200998 struct work_atom *atom;
Frederic Weisbecker66685672009-09-13 01:56:25 +0200999 u64 delta;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001000
mingo39aeb522009-09-14 20:04:48 +02001001 if (list_empty(&atoms->work_list))
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001002 return;
1003
mingo39aeb522009-09-14 20:04:48 +02001004 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001005
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001006 if (atom->state != THREAD_WAIT_CPU)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001007 return;
1008
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001009 if (timestamp < atom->wake_up_time) {
1010 atom->state = THREAD_IGNORE;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001011 return;
1012 }
1013
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001014 atom->state = THREAD_SCHED_IN;
1015 atom->sched_in_time = timestamp;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001016
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001017 delta = atom->sched_in_time - atom->wake_up_time;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001018 atoms->total_lat += delta;
Frederic Weisbecker37863102009-12-09 21:40:08 +01001019 if (delta > atoms->max_lat) {
Frederic Weisbecker66685672009-09-13 01:56:25 +02001020 atoms->max_lat = delta;
Frederic Weisbecker37863102009-12-09 21:40:08 +01001021 atoms->max_lat_at = timestamp;
1022 }
Frederic Weisbecker66685672009-09-13 01:56:25 +02001023 atoms->nb_atoms++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001024}
1025
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001026static void
1027latency_switch_event(struct trace_switch_event *switch_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001028 struct machine *machine,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001029 struct event *event __used,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001030 int cpu,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001031 u64 timestamp,
1032 struct thread *thread __used)
1033{
mingo39aeb522009-09-14 20:04:48 +02001034 struct work_atoms *out_events, *in_events;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001035 struct thread *sched_out, *sched_in;
Ingo Molnarea92ed52009-09-12 10:08:34 +02001036 u64 timestamp0;
1037 s64 delta;
1038
mingo39aeb522009-09-14 20:04:48 +02001039 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001040
1041 timestamp0 = cpu_last_switched[cpu];
1042 cpu_last_switched[cpu] = timestamp;
1043 if (timestamp0)
1044 delta = timestamp - timestamp0;
1045 else
1046 delta = 0;
1047
1048 if (delta < 0)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001049 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnarea92ed52009-09-12 10:08:34 +02001050
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001051
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001052 sched_out = machine__findnew_thread(machine, switch_event->prev_pid);
1053 sched_in = machine__findnew_thread(machine, switch_event->next_pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001054
mingo39aeb522009-09-14 20:04:48 +02001055 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1056 if (!out_events) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001057 thread_atoms_insert(sched_out);
mingo39aeb522009-09-14 20:04:48 +02001058 out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid);
1059 if (!out_events)
1060 die("out-event: Internal tree error");
1061 }
1062 add_sched_out_event(out_events, sched_out_state(switch_event), timestamp);
1063
1064 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1065 if (!in_events) {
1066 thread_atoms_insert(sched_in);
1067 in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid);
1068 if (!in_events)
1069 die("in-event: Internal tree error");
1070 /*
1071 * Take came in we have not heard about yet,
1072 * add in an initial atom in runnable state:
1073 */
1074 add_sched_out_event(in_events, 'R', timestamp);
1075 }
1076 add_sched_in_event(in_events, timestamp);
1077}
1078
1079static void
1080latency_runtime_event(struct trace_runtime_event *runtime_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001081 struct machine *machine,
mingo39aeb522009-09-14 20:04:48 +02001082 struct event *event __used,
1083 int cpu,
1084 u64 timestamp,
1085 struct thread *this_thread __used)
1086{
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001087 struct thread *thread = machine__findnew_thread(machine, runtime_event->pid);
Arnaldo Carvalho de Melod5b889f2009-10-13 11:16:29 -03001088 struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
mingo39aeb522009-09-14 20:04:48 +02001089
1090 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
mingo39aeb522009-09-14 20:04:48 +02001091 if (!atoms) {
1092 thread_atoms_insert(thread);
1093 atoms = thread_atoms_search(&atom_root, thread, &cmp_pid);
1094 if (!atoms)
1095 die("in-event: Internal tree error");
1096 add_sched_out_event(atoms, 'R', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001097 }
1098
mingo39aeb522009-09-14 20:04:48 +02001099 add_runtime_event(atoms, runtime_event->runtime, timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001100}
1101
1102static void
1103latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001104 struct machine *machine,
mingo39aeb522009-09-14 20:04:48 +02001105 struct event *__event __used,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001106 int cpu __used,
1107 u64 timestamp,
1108 struct thread *thread __used)
1109{
mingo39aeb522009-09-14 20:04:48 +02001110 struct work_atoms *atoms;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001111 struct work_atom *atom;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001112 struct thread *wakee;
1113
1114 /* Note for later, it may be interesting to observe the failing cases */
1115 if (!wakeup_event->success)
1116 return;
1117
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001118 wakee = machine__findnew_thread(machine, wakeup_event->pid);
Ingo Molnarb5fae122009-09-11 12:12:54 +02001119 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
Frederic Weisbecker17562202009-09-12 23:11:32 +02001120 if (!atoms) {
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001121 thread_atoms_insert(wakee);
mingo39aeb522009-09-14 20:04:48 +02001122 atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid);
1123 if (!atoms)
1124 die("wakeup-event: Internal tree error");
1125 add_sched_out_event(atoms, 'S', timestamp);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001126 }
1127
mingo39aeb522009-09-14 20:04:48 +02001128 BUG_ON(list_empty(&atoms->work_list));
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001129
mingo39aeb522009-09-14 20:04:48 +02001130 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001131
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001132 /*
1133 * You WILL be missing events if you've recorded only
1134 * one CPU, or are only looking at only one, so don't
1135 * make useless noise.
1136 */
1137 if (profile_cpu == -1 && atom->state != THREAD_SLEEPING)
Ingo Molnardc02bf72009-09-16 13:45:00 +02001138 nr_state_machine_bugs++;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001139
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001140 nr_timestamps++;
1141 if (atom->sched_out_time > timestamp) {
Ingo Molnardc02bf72009-09-16 13:45:00 +02001142 nr_unordered_timestamps++;
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001143 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001144 }
Frederic Weisbeckeraa1ab9d2009-09-14 03:01:12 +02001145
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001146 atom->state = THREAD_WAIT_CPU;
1147 atom->wake_up_time = timestamp;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001148}
1149
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001150static void
1151latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001152 struct machine *machine,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001153 struct event *__event __used,
1154 int cpu __used,
1155 u64 timestamp,
1156 struct thread *thread __used)
1157{
1158 struct work_atoms *atoms;
1159 struct work_atom *atom;
1160 struct thread *migrant;
1161
1162 /*
1163 * Only need to worry about migration when profiling one CPU.
1164 */
1165 if (profile_cpu == -1)
1166 return;
1167
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001168 migrant = machine__findnew_thread(machine, migrate_task_event->pid);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001169 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1170 if (!atoms) {
1171 thread_atoms_insert(migrant);
1172 register_pid(migrant->pid, migrant->comm);
1173 atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid);
1174 if (!atoms)
1175 die("migration-event: Internal tree error");
1176 add_sched_out_event(atoms, 'R', timestamp);
1177 }
1178
1179 BUG_ON(list_empty(&atoms->work_list));
1180
1181 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1182 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1183
1184 nr_timestamps++;
1185
1186 if (atom->sched_out_time > timestamp)
1187 nr_unordered_timestamps++;
1188}
1189
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001190static struct trace_sched_handler lat_ops = {
Ingo Molnarea92ed52009-09-12 10:08:34 +02001191 .wakeup_event = latency_wakeup_event,
1192 .switch_event = latency_switch_event,
mingo39aeb522009-09-14 20:04:48 +02001193 .runtime_event = latency_runtime_event,
Ingo Molnarea92ed52009-09-12 10:08:34 +02001194 .fork_event = latency_fork_event,
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001195 .migrate_task_event = latency_migrate_task_event,
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001196};
1197
mingo39aeb522009-09-14 20:04:48 +02001198static void output_lat_thread(struct work_atoms *work_list)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001199{
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001200 int i;
1201 int ret;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001202 u64 avg;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001203
mingo39aeb522009-09-14 20:04:48 +02001204 if (!work_list->nb_atoms)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001205 return;
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001206 /*
1207 * Ignore idle threads:
1208 */
Ingo Molnar80ed0982009-09-16 14:12:36 +02001209 if (!strcmp(work_list->thread->comm, "swapper"))
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001210 return;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001211
mingo39aeb522009-09-14 20:04:48 +02001212 all_runtime += work_list->total_runtime;
1213 all_count += work_list->nb_atoms;
Frederic Weisbecker66685672009-09-13 01:56:25 +02001214
Ingo Molnar80ed0982009-09-16 14:12:36 +02001215 ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001216
mingo08f69e62009-09-14 18:30:44 +02001217 for (i = 0; i < 24 - ret; i++)
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001218 printf(" ");
1219
mingo39aeb522009-09-14 20:04:48 +02001220 avg = work_list->total_lat / work_list->nb_atoms;
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001221
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001222 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 +02001223 (double)work_list->total_runtime / 1e6,
1224 work_list->nb_atoms, (double)avg / 1e6,
Frederic Weisbecker37863102009-12-09 21:40:08 +01001225 (double)work_list->max_lat / 1e6,
1226 (double)work_list->max_lat_at / 1e9);
Frederic Weisbeckercdce9d72009-09-12 08:06:14 +02001227}
1228
mingo39aeb522009-09-14 20:04:48 +02001229static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001230{
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001231 if (l->thread->pid < r->thread->pid)
1232 return -1;
1233 if (l->thread->pid > r->thread->pid)
1234 return 1;
1235
1236 return 0;
1237}
1238
1239static struct sort_dimension pid_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001240 .name = "pid",
1241 .cmp = pid_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001242};
1243
mingo39aeb522009-09-14 20:04:48 +02001244static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001245{
1246 u64 avgl, avgr;
1247
1248 if (!l->nb_atoms)
1249 return -1;
1250
1251 if (!r->nb_atoms)
1252 return 1;
1253
1254 avgl = l->total_lat / l->nb_atoms;
1255 avgr = r->total_lat / r->nb_atoms;
1256
1257 if (avgl < avgr)
1258 return -1;
1259 if (avgl > avgr)
1260 return 1;
1261
1262 return 0;
1263}
1264
1265static struct sort_dimension avg_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001266 .name = "avg",
1267 .cmp = avg_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001268};
1269
mingo39aeb522009-09-14 20:04:48 +02001270static int max_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001271{
1272 if (l->max_lat < r->max_lat)
1273 return -1;
1274 if (l->max_lat > r->max_lat)
1275 return 1;
1276
1277 return 0;
1278}
1279
1280static struct sort_dimension max_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001281 .name = "max",
1282 .cmp = max_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001283};
1284
mingo39aeb522009-09-14 20:04:48 +02001285static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001286{
1287 if (l->nb_atoms < r->nb_atoms)
1288 return -1;
1289 if (l->nb_atoms > r->nb_atoms)
1290 return 1;
1291
1292 return 0;
1293}
1294
1295static struct sort_dimension switch_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001296 .name = "switch",
1297 .cmp = switch_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001298};
1299
mingo39aeb522009-09-14 20:04:48 +02001300static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001301{
1302 if (l->total_runtime < r->total_runtime)
1303 return -1;
1304 if (l->total_runtime > r->total_runtime)
1305 return 1;
1306
1307 return 0;
1308}
1309
1310static struct sort_dimension runtime_sort_dimension = {
Ingo Molnarb5fae122009-09-11 12:12:54 +02001311 .name = "runtime",
1312 .cmp = runtime_cmp,
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001313};
1314
1315static struct sort_dimension *available_sorts[] = {
1316 &pid_sort_dimension,
1317 &avg_sort_dimension,
1318 &max_sort_dimension,
1319 &switch_sort_dimension,
1320 &runtime_sort_dimension,
1321};
1322
1323#define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
1324
1325static LIST_HEAD(sort_list);
1326
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001327static int sort_dimension__add(const char *tok, struct list_head *list)
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001328{
1329 int i;
1330
1331 for (i = 0; i < NB_AVAILABLE_SORTS; i++) {
1332 if (!strcmp(available_sorts[i]->name, tok)) {
1333 list_add_tail(&available_sorts[i]->list, list);
1334
1335 return 0;
1336 }
1337 }
1338
1339 return -1;
1340}
1341
1342static void setup_sorting(void);
1343
1344static void sort_lat(void)
1345{
1346 struct rb_node *node;
1347
1348 for (;;) {
mingo39aeb522009-09-14 20:04:48 +02001349 struct work_atoms *data;
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001350 node = rb_first(&atom_root);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001351 if (!node)
1352 break;
1353
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001354 rb_erase(node, &atom_root);
mingo39aeb522009-09-14 20:04:48 +02001355 data = rb_entry(node, struct work_atoms, node);
Ingo Molnarb1ffe8f2009-09-11 12:12:54 +02001356 __thread_latency_insert(&sorted_atom_root, data, &sort_list);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001357 }
1358}
1359
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001360static struct trace_sched_handler *trace_handler;
1361
1362static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001363process_sched_wakeup_event(struct perf_tool *tool __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001364 struct event *event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001365 struct perf_sample *sample,
1366 struct machine *machine,
1367 struct thread *thread)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001368{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001369 void *data = sample->raw_data;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001370 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 Melo743eb862011-11-28 07:56:39 -02001381 trace_handler->wakeup_event(&wakeup_event, machine, event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001382 sample->cpu, sample->time, 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 Melo743eb862011-11-28 07:56:39 -02001400 struct machine *machine,
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{
Kyle McMartinfb7d0b32011-01-24 11:13:04 -05001406 struct thread *sched_out __used, *sched_in;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001407 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)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001425 die("hm, delta: %" PRIu64 " < 0 ?\n", delta);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001426
1427
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001428 sched_out = machine__findnew_thread(machine, switch_event->prev_pid);
1429 sched_in = machine__findnew_thread(machine, 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
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001477static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001478process_sched_switch_event(struct perf_tool *tool __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001479 struct event *event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001480 struct perf_sample *sample,
1481 struct machine *machine,
1482 struct thread *thread)
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001483{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001484 int this_cpu = sample->cpu;
1485 void *data = sample->raw_data;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001486 struct trace_switch_event switch_event;
1487
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001488 FILL_COMMON_FIELDS(switch_event, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001489
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001490 FILL_ARRAY(switch_event, prev_comm, event, data);
1491 FILL_FIELD(switch_event, prev_pid, event, data);
1492 FILL_FIELD(switch_event, prev_prio, event, data);
1493 FILL_FIELD(switch_event, prev_state, event, data);
1494 FILL_ARRAY(switch_event, next_comm, event, data);
1495 FILL_FIELD(switch_event, next_pid, event, data);
1496 FILL_FIELD(switch_event, next_prio, event, data);
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001497
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001498 if (curr_pid[this_cpu] != (u32)-1) {
Ingo Molnarc8a37752009-09-16 14:07:00 +02001499 /*
1500 * Are we trying to switch away a PID that is
1501 * not current?
1502 */
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001503 if (curr_pid[this_cpu] != switch_event.prev_pid)
Ingo Molnarc8a37752009-09-16 14:07:00 +02001504 nr_context_switch_bugs++;
1505 }
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001506 if (trace_handler->switch_event)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001507 trace_handler->switch_event(&switch_event, machine, event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001508 this_cpu, sample->time, thread);
Ingo Molnarc8a37752009-09-16 14:07:00 +02001509
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001510 curr_pid[this_cpu] = switch_event.next_pid;
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001511}
1512
1513static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001514process_sched_runtime_event(struct perf_tool *tool __used,
1515 struct event *event,
1516 struct perf_sample *sample,
1517 struct machine *machine,
1518 struct thread *thread)
mingo39aeb522009-09-14 20:04:48 +02001519{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001520 void *data = sample->raw_data;
mingo39aeb522009-09-14 20:04:48 +02001521 struct trace_runtime_event runtime_event;
1522
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001523 FILL_ARRAY(runtime_event, comm, event, data);
1524 FILL_FIELD(runtime_event, pid, event, data);
1525 FILL_FIELD(runtime_event, runtime, event, data);
1526 FILL_FIELD(runtime_event, vruntime, event, data);
mingo39aeb522009-09-14 20:04:48 +02001527
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001528 if (trace_handler->runtime_event)
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001529 trace_handler->runtime_event(&runtime_event, machine, event,
1530 sample->cpu, sample->time, thread);
mingo39aeb522009-09-14 20:04:48 +02001531}
1532
1533static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001534process_sched_fork_event(struct perf_tool *tool __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001535 struct event *event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001536 struct perf_sample *sample,
1537 struct machine *machine __used,
1538 struct thread *thread)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001539{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001540 void *data = sample->raw_data;
Frederic Weisbecker46538812009-09-12 02:43:45 +02001541 struct trace_fork_event fork_event;
1542
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001543 FILL_COMMON_FIELDS(fork_event, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001544
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001545 FILL_ARRAY(fork_event, parent_comm, event, data);
1546 FILL_FIELD(fork_event, parent_pid, event, data);
1547 FILL_ARRAY(fork_event, child_comm, event, data);
1548 FILL_FIELD(fork_event, child_pid, event, data);
Frederic Weisbecker46538812009-09-12 02:43:45 +02001549
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001550 if (trace_handler->fork_event)
Arnaldo Carvalho de Melob3165f42009-12-13 19:50:28 -02001551 trace_handler->fork_event(&fork_event, event,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001552 sample->cpu, sample->time, thread);
Ingo Molnarfbf94822009-09-11 12:12:54 +02001553}
1554
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001555static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001556process_sched_exit_event(struct perf_tool *tool __used,
1557 struct event *event,
1558 struct perf_sample *sample __used,
1559 struct machine *machine __used,
Frederic Weisbecker419ab0d2009-09-12 03:59:01 +02001560 struct thread *thread __used)
Ingo Molnarfbf94822009-09-11 12:12:54 +02001561{
Ingo Molnarad236fd2009-09-11 12:12:54 +02001562 if (verbose)
1563 printf("sched_exit event %p\n", event);
Ingo Molnarec156762009-09-11 12:12:54 +02001564}
1565
1566static void
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001567process_sched_migrate_task_event(struct perf_tool *tool __used,
1568 struct event *event,
1569 struct perf_sample *sample,
1570 struct machine *machine,
1571 struct thread *thread)
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001572{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001573 void *data = sample->raw_data;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001574 struct trace_migrate_task_event migrate_task_event;
1575
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001576 FILL_COMMON_FIELDS(migrate_task_event, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001577
Xiao Guangrongf48f6692009-12-07 13:04:04 +08001578 FILL_ARRAY(migrate_task_event, comm, event, data);
1579 FILL_FIELD(migrate_task_event, pid, event, data);
1580 FILL_FIELD(migrate_task_event, prio, event, data);
1581 FILL_FIELD(migrate_task_event, cpu, event, data);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001582
1583 if (trace_handler->migrate_task_event)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001584 trace_handler->migrate_task_event(&migrate_task_event, machine,
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001585 event, sample->cpu,
1586 sample->time, thread);
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001587}
1588
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001589typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event *event,
1590 struct perf_sample *sample,
1591 struct machine *machine,
1592 struct thread *thread);
1593
1594static int perf_sched__process_tracepoint_sample(struct perf_tool *tool,
1595 union perf_event *event __used,
1596 struct perf_sample *sample,
1597 struct perf_evsel *evsel,
1598 struct machine *machine)
Ingo Molnarec156762009-09-11 12:12:54 +02001599{
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001600 struct thread *thread = machine__findnew_thread(machine, sample->pid);
Ingo Molnarec156762009-09-11 12:12:54 +02001601
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001602 if (thread == NULL) {
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001603 pr_debug("problem processing %s event, skipping it.\n",
1604 evsel->name);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001605 return -1;
1606 }
1607
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001608 evsel->hists.stats.total_period += sample->period;
1609 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
Julia Lawallf39cdf22009-10-17 08:43:17 +02001610
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001611 if (evsel->handler.func != NULL) {
1612 tracepoint_handler f = evsel->handler.func;
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001613
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001614 if (evsel->handler.data == NULL)
1615 evsel->handler.data = trace_find_event(evsel->attr.config);
1616
1617 f(tool, evsel->handler.data, sample, machine, thread);
1618 }
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001619
1620 return 0;
1621}
1622
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001623static struct perf_tool perf_sched = {
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001624 .sample = perf_sched__process_tracepoint_sample,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001625 .comm = perf_event__process_comm,
1626 .lost = perf_event__process_lost,
1627 .fork = perf_event__process_task,
Frederic Weisbeckera64eae72010-04-24 00:29:40 +02001628 .ordered_samples = true,
Frederic Weisbecker016e92f2009-10-07 12:47:31 +02001629};
1630
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001631static void read_events(bool destroy, struct perf_session **psession)
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001632{
Arnaldo Carvalho de Melod549c762009-12-27 21:37:02 -02001633 int err = -EINVAL;
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001634 const struct perf_evsel_str_handler handlers[] = {
1635 { "sched:sched_switch", process_sched_switch_event, },
1636 { "sched:sched_stat_runtime", process_sched_runtime_event, },
1637 { "sched:sched_wakeup", process_sched_wakeup_event, },
1638 { "sched:sched_wakeup_new", process_sched_wakeup_event, },
1639 { "sched:sched_process_fork", process_sched_fork_event, },
1640 { "sched:sched_process_exit", process_sched_exit_event, },
1641 { "sched:sched_migrate_task", process_sched_migrate_task_event, },
1642 };
Ian Munsie21ef97f2010-12-10 14:09:16 +11001643 struct perf_session *session = perf_session__new(input_name, O_RDONLY,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001644 0, false, &perf_sched);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001645 if (session == NULL)
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001646 die("No Memory");
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001647
Arnaldo Carvalho de Meloee29be62011-11-28 17:57:40 -02001648 err = perf_evlist__set_tracepoints_handlers_array(session->evlist, handlers);
1649 assert(err == 0);
1650
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001651 if (perf_session__has_traces(session, "record -R")) {
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001652 err = perf_session__process_events(session, &perf_sched);
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001653 if (err)
1654 die("Failed to process events, error %d", err);
1655
Arnaldo Carvalho de Melocee75ac2010-05-14 13:16:55 -03001656 nr_events = session->hists.stats.nr_events[0];
1657 nr_lost_events = session->hists.stats.total_lost;
1658 nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST];
1659 }
Arnaldo Carvalho de Melod549c762009-12-27 21:37:02 -02001660
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001661 if (destroy)
1662 perf_session__delete(session);
1663
1664 if (psession)
1665 *psession = session;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001666}
1667
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001668static void print_bad_events(void)
1669{
1670 if (nr_unordered_timestamps && nr_timestamps) {
1671 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
1672 (double)nr_unordered_timestamps/(double)nr_timestamps*100.0,
1673 nr_unordered_timestamps, nr_timestamps);
1674 }
1675 if (nr_lost_events && nr_events) {
1676 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
1677 (double)nr_lost_events/(double)nr_events*100.0,
1678 nr_lost_events, nr_events, nr_lost_chunks);
1679 }
1680 if (nr_state_machine_bugs && nr_timestamps) {
1681 printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)",
1682 (double)nr_state_machine_bugs/(double)nr_timestamps*100.0,
1683 nr_state_machine_bugs, nr_timestamps);
1684 if (nr_lost_events)
1685 printf(" (due to lost events?)");
1686 printf("\n");
1687 }
1688 if (nr_context_switch_bugs && nr_timestamps) {
1689 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
1690 (double)nr_context_switch_bugs/(double)nr_timestamps*100.0,
1691 nr_context_switch_bugs, nr_timestamps);
1692 if (nr_lost_events)
1693 printf(" (due to lost events?)");
1694 printf("\n");
1695 }
1696}
1697
1698static void __cmd_lat(void)
1699{
1700 struct rb_node *next;
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001701 struct perf_session *session;
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001702
1703 setup_pager();
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001704 read_events(false, &session);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001705 sort_lat();
1706
Frederic Weisbecker37863102009-12-09 21:40:08 +01001707 printf("\n ---------------------------------------------------------------------------------------------------------------\n");
1708 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
1709 printf(" ---------------------------------------------------------------------------------------------------------------\n");
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001710
1711 next = rb_first(&sorted_atom_root);
1712
1713 while (next) {
1714 struct work_atoms *work_list;
1715
1716 work_list = rb_entry(next, struct work_atoms, node);
1717 output_lat_thread(work_list);
1718 next = rb_next(next);
1719 }
1720
1721 printf(" -----------------------------------------------------------------------------------------\n");
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001722 printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001723 (double)all_runtime/1e6, all_count);
1724
1725 printf(" ---------------------------------------------------\n");
1726
1727 print_bad_events();
1728 printf("\n");
1729
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001730 perf_session__delete(session);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001731}
1732
1733static struct trace_sched_handler map_ops = {
1734 .wakeup_event = NULL,
1735 .switch_event = map_switch_event,
1736 .runtime_event = NULL,
1737 .fork_event = NULL,
1738};
1739
1740static void __cmd_map(void)
1741{
Ingo Molnar40749d02009-09-17 18:24:55 +02001742 max_cpu = sysconf(_SC_NPROCESSORS_CONF);
1743
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001744 setup_pager();
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001745 read_events(true, NULL);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001746 print_bad_events();
1747}
1748
1749static void __cmd_replay(void)
1750{
1751 unsigned long i;
1752
1753 calibrate_run_measurement_overhead();
1754 calibrate_sleep_measurement_overhead();
1755
1756 test_calibrations();
1757
Jiri Olsa4c09baf2011-08-08 23:03:34 +02001758 read_events(true, NULL);
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001759
1760 printf("nr_run_events: %ld\n", nr_run_events);
1761 printf("nr_sleep_events: %ld\n", nr_sleep_events);
1762 printf("nr_wakeup_events: %ld\n", nr_wakeup_events);
1763
1764 if (targetless_wakeups)
1765 printf("target-less wakeups: %ld\n", targetless_wakeups);
1766 if (multitarget_wakeups)
1767 printf("multi-target wakeups: %ld\n", multitarget_wakeups);
1768 if (nr_run_events_optimized)
1769 printf("run atoms optimized: %ld\n",
1770 nr_run_events_optimized);
1771
1772 print_task_traces();
1773 add_cross_task_wakeups();
1774
1775 create_tasks();
1776 printf("------------------------------------------------------------\n");
1777 for (i = 0; i < replay_repeat; i++)
1778 run_one_test();
1779}
1780
1781
Ingo Molnar46f392c2009-09-12 10:08:34 +02001782static const char * const sched_usage[] = {
Jiri Olsa580cabe2011-08-09 14:46:51 +02001783 "perf sched [<options>] {record|latency|map|replay|script}",
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001784 NULL
1785};
1786
Ingo Molnarf2858d82009-09-11 12:12:54 +02001787static const struct option sched_options[] = {
Mike Galbraith4b77a722009-09-18 08:22:24 +02001788 OPT_STRING('i', "input", &input_name, "file",
1789 "input file name"),
Ian Munsiec0555642010-04-13 18:37:33 +10001790 OPT_INCR('v', "verbose", &verbose,
Ingo Molnarf2858d82009-09-11 12:12:54 +02001791 "be more verbose (show symbol address, etc)"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001792 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1793 "dump raw trace in ASCII"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001794 OPT_END()
1795};
1796
1797static const char * const latency_usage[] = {
1798 "perf sched latency [<options>]",
1799 NULL
1800};
1801
1802static const struct option latency_options[] = {
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001803 OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
1804 "sort by key(s): runtime, switch, avg, max"),
Ian Munsiec0555642010-04-13 18:37:33 +10001805 OPT_INCR('v', "verbose", &verbose,
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001806 "be more verbose (show symbol address, etc)"),
Mike Galbraith55ffb7a2009-10-10 14:46:04 +02001807 OPT_INTEGER('C', "CPU", &profile_cpu,
1808 "CPU to profile on"),
Ingo Molnarf2858d82009-09-11 12:12:54 +02001809 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1810 "dump raw trace in ASCII"),
1811 OPT_END()
1812};
1813
1814static const char * const replay_usage[] = {
1815 "perf sched replay [<options>]",
1816 NULL
1817};
1818
1819static const struct option replay_options[] = {
Arnaldo Carvalho de Melo19679362010-05-17 15:39:16 -03001820 OPT_UINTEGER('r', "repeat", &replay_repeat,
1821 "repeat the workload replay N times (-1: infinite)"),
Ian Munsiec0555642010-04-13 18:37:33 +10001822 OPT_INCR('v', "verbose", &verbose,
Ingo Molnarf2858d82009-09-11 12:12:54 +02001823 "be more verbose (show symbol address, etc)"),
1824 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1825 "dump raw trace in ASCII"),
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001826 OPT_END()
1827};
1828
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001829static void setup_sorting(void)
1830{
1831 char *tmp, *tok, *str = strdup(sort_order);
1832
1833 for (tok = strtok_r(str, ", ", &tmp);
1834 tok; tok = strtok_r(NULL, ", ", &tmp)) {
1835 if (sort_dimension__add(tok, &sort_list) < 0) {
1836 error("Unknown --sort key: `%s'", tok);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001837 usage_with_options(latency_usage, latency_options);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001838 }
1839 }
1840
1841 free(str);
1842
Randy Dunlapcbef79a2009-10-05 13:17:29 -07001843 sort_dimension__add("pid", &cmp_pid);
Frederic Weisbeckerdaa1d7a2009-09-13 03:36:29 +02001844}
1845
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001846static const char *record_args[] = {
1847 "record",
1848 "-a",
1849 "-R",
Ingo Molnarea57c4f2009-09-13 18:15:54 +02001850 "-f",
Ingo Molnardc02bf72009-09-16 13:45:00 +02001851 "-m", "1024",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001852 "-c", "1",
Stephane Eranian97101182011-01-12 10:29:05 +01001853 "-e", "sched:sched_switch",
1854 "-e", "sched:sched_stat_wait",
1855 "-e", "sched:sched_stat_sleep",
1856 "-e", "sched:sched_stat_iowait",
1857 "-e", "sched:sched_stat_runtime",
1858 "-e", "sched:sched_process_exit",
1859 "-e", "sched:sched_process_fork",
1860 "-e", "sched:sched_wakeup",
1861 "-e", "sched:sched_migrate_task",
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001862};
1863
1864static int __cmd_record(int argc, const char **argv)
1865{
1866 unsigned int rec_argc, i, j;
1867 const char **rec_argv;
1868
1869 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1870 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1871
Arnaldo Carvalho de Meloe462dc52011-01-10 10:48:47 -02001872 if (rec_argv == NULL)
Chris Samuelce47dc52010-11-13 13:35:06 +11001873 return -ENOMEM;
1874
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001875 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1876 rec_argv[i] = strdup(record_args[i]);
1877
1878 for (j = 1; j < (unsigned int)argc; j++, i++)
1879 rec_argv[i] = argv[j];
1880
1881 BUG_ON(i != rec_argc);
1882
1883 return cmd_record(i, rec_argv, NULL);
1884}
1885
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001886int cmd_sched(int argc, const char **argv, const char *prefix __used)
1887{
Ingo Molnarf2858d82009-09-11 12:12:54 +02001888 argc = parse_options(argc, argv, sched_options, sched_usage,
1889 PARSE_OPT_STOP_AT_NON_OPTION);
1890 if (!argc)
1891 usage_with_options(sched_usage, sched_options);
1892
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001893 /*
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001894 * Aliased to 'perf script' for now:
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001895 */
Ingo Molnar133dc4c2010-11-16 18:45:39 +01001896 if (!strcmp(argv[0], "script"))
1897 return cmd_script(argc, argv, prefix);
Xiao Guangrongc0777c52009-12-07 12:04:49 +08001898
Arnaldo Carvalho de Melo75be6cf2009-12-15 20:04:39 -02001899 symbol__init();
Ingo Molnar1fc35b22009-09-13 09:44:29 +02001900 if (!strncmp(argv[0], "rec", 3)) {
1901 return __cmd_record(argc, argv);
1902 } else if (!strncmp(argv[0], "lat", 3)) {
Ingo Molnarf2858d82009-09-11 12:12:54 +02001903 trace_handler = &lat_ops;
1904 if (argc > 1) {
1905 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
1906 if (argc)
1907 usage_with_options(latency_usage, latency_options);
Ingo Molnarf2858d82009-09-11 12:12:54 +02001908 }
Ingo Molnarb5fae122009-09-11 12:12:54 +02001909 setup_sorting();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001910 __cmd_lat();
Ingo Molnar0ec04e12009-09-16 17:40:48 +02001911 } else if (!strcmp(argv[0], "map")) {
1912 trace_handler = &map_ops;
1913 setup_sorting();
1914 __cmd_map();
Ingo Molnarf2858d82009-09-11 12:12:54 +02001915 } else if (!strncmp(argv[0], "rep", 3)) {
1916 trace_handler = &replay_ops;
1917 if (argc) {
1918 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
1919 if (argc)
1920 usage_with_options(replay_usage, replay_options);
1921 }
1922 __cmd_replay();
1923 } else {
1924 usage_with_options(sched_usage, sched_options);
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001925 }
1926
Ingo Molnarec156762009-09-11 12:12:54 +02001927 return 0;
Ingo Molnar0a02ad92009-09-11 12:12:54 +02001928}