5 #include "util/cache.h"
6 #include "util/symbol.h"
7 #include "util/thread.h"
8 #include "util/header.h"
10 #include "util/parse-options.h"
11 #include "util/trace-event.h"
13 #include "util/debug.h"
14 #include "util/data_map.h"
16 #include <sys/types.h>
17 #include <sys/prctl.h>
19 #include <semaphore.h>
23 static char const *input_name
= "perf.data";
25 static unsigned long total_comm
= 0;
27 static struct perf_header
*header
;
28 static u64 sample_type
;
30 static char default_sort_order
[] = "avg, max, switch, runtime";
31 static char *sort_order
= default_sort_order
;
33 static int profile_cpu
= -1;
38 #define PR_SET_NAME 15 /* Set process name */
41 static u64 run_measurement_overhead
;
42 static u64 sleep_measurement_overhead
;
49 static unsigned long nr_tasks
;
58 unsigned long nr_events
;
59 unsigned long curr_event
;
60 struct sched_atom
**atoms
;
71 enum sched_event_type
{
75 SCHED_EVENT_MIGRATION
,
79 enum sched_event_type type
;
85 struct task_desc
*wakee
;
88 static struct task_desc
*pid_to_task
[MAX_PID
];
90 static struct task_desc
**tasks
;
92 static pthread_mutex_t start_work_mutex
= PTHREAD_MUTEX_INITIALIZER
;
93 static u64 start_time
;
95 static pthread_mutex_t work_done_wait_mutex
= PTHREAD_MUTEX_INITIALIZER
;
97 static unsigned long nr_run_events
;
98 static unsigned long nr_sleep_events
;
99 static unsigned long nr_wakeup_events
;
101 static unsigned long nr_sleep_corrections
;
102 static unsigned long nr_run_events_optimized
;
104 static unsigned long targetless_wakeups
;
105 static unsigned long multitarget_wakeups
;
107 static u64 cpu_usage
;
108 static u64 runavg_cpu_usage
;
109 static u64 parent_cpu_usage
;
110 static u64 runavg_parent_cpu_usage
;
112 static unsigned long nr_runs
;
113 static u64 sum_runtime
;
114 static u64 sum_fluct
;
117 static unsigned long replay_repeat
= 10;
118 static unsigned long nr_timestamps
;
119 static unsigned long nr_unordered_timestamps
;
120 static unsigned long nr_state_machine_bugs
;
121 static unsigned long nr_context_switch_bugs
;
122 static unsigned long nr_events
;
123 static unsigned long nr_lost_chunks
;
124 static unsigned long nr_lost_events
;
126 #define TASK_STATE_TO_CHAR_STR "RSDTtZX"
136 struct list_head list
;
137 enum thread_state state
;
145 struct list_head work_list
;
146 struct thread
*thread
;
154 typedef int (*sort_fn_t
)(struct work_atoms
*, struct work_atoms
*);
156 static struct rb_root atom_root
, sorted_atom_root
;
158 static u64 all_runtime
;
159 static u64 all_count
;
162 static u64
get_nsecs(void)
166 clock_gettime(CLOCK_MONOTONIC
, &ts
);
168 return ts
.tv_sec
* 1000000000ULL + ts
.tv_nsec
;
171 static void burn_nsecs(u64 nsecs
)
173 u64 T0
= get_nsecs(), T1
;
177 } while (T1
+ run_measurement_overhead
< T0
+ nsecs
);
180 static void sleep_nsecs(u64 nsecs
)
184 ts
.tv_nsec
= nsecs
% 999999999;
185 ts
.tv_sec
= nsecs
/ 999999999;
187 nanosleep(&ts
, NULL
);
190 static void calibrate_run_measurement_overhead(void)
192 u64 T0
, T1
, delta
, min_delta
= 1000000000ULL;
195 for (i
= 0; i
< 10; i
++) {
200 min_delta
= min(min_delta
, delta
);
202 run_measurement_overhead
= min_delta
;
204 printf("run measurement overhead: %Ld nsecs\n", min_delta
);
207 static void calibrate_sleep_measurement_overhead(void)
209 u64 T0
, T1
, delta
, min_delta
= 1000000000ULL;
212 for (i
= 0; i
< 10; i
++) {
217 min_delta
= min(min_delta
, delta
);
220 sleep_measurement_overhead
= min_delta
;
222 printf("sleep measurement overhead: %Ld nsecs\n", min_delta
);
225 static struct sched_atom
*
226 get_new_event(struct task_desc
*task
, u64 timestamp
)
228 struct sched_atom
*event
= zalloc(sizeof(*event
));
229 unsigned long idx
= task
->nr_events
;
232 event
->timestamp
= timestamp
;
236 size
= sizeof(struct sched_atom
*) * task
->nr_events
;
237 task
->atoms
= realloc(task
->atoms
, size
);
238 BUG_ON(!task
->atoms
);
240 task
->atoms
[idx
] = event
;
245 static struct sched_atom
*last_event(struct task_desc
*task
)
247 if (!task
->nr_events
)
250 return task
->atoms
[task
->nr_events
- 1];
254 add_sched_event_run(struct task_desc
*task
, u64 timestamp
, u64 duration
)
256 struct sched_atom
*event
, *curr_event
= last_event(task
);
259 * optimize an existing RUN event by merging this one
262 if (curr_event
&& curr_event
->type
== SCHED_EVENT_RUN
) {
263 nr_run_events_optimized
++;
264 curr_event
->duration
+= duration
;
268 event
= get_new_event(task
, timestamp
);
270 event
->type
= SCHED_EVENT_RUN
;
271 event
->duration
= duration
;
277 add_sched_event_wakeup(struct task_desc
*task
, u64 timestamp
,
278 struct task_desc
*wakee
)
280 struct sched_atom
*event
, *wakee_event
;
282 event
= get_new_event(task
, timestamp
);
283 event
->type
= SCHED_EVENT_WAKEUP
;
284 event
->wakee
= wakee
;
286 wakee_event
= last_event(wakee
);
287 if (!wakee_event
|| wakee_event
->type
!= SCHED_EVENT_SLEEP
) {
288 targetless_wakeups
++;
291 if (wakee_event
->wait_sem
) {
292 multitarget_wakeups
++;
296 wakee_event
->wait_sem
= zalloc(sizeof(*wakee_event
->wait_sem
));
297 sem_init(wakee_event
->wait_sem
, 0, 0);
298 wakee_event
->specific_wait
= 1;
299 event
->wait_sem
= wakee_event
->wait_sem
;
305 add_sched_event_sleep(struct task_desc
*task
, u64 timestamp
,
306 u64 task_state __used
)
308 struct sched_atom
*event
= get_new_event(task
, timestamp
);
310 event
->type
= SCHED_EVENT_SLEEP
;
315 static struct task_desc
*register_pid(unsigned long pid
, const char *comm
)
317 struct task_desc
*task
;
319 BUG_ON(pid
>= MAX_PID
);
321 task
= pid_to_task
[pid
];
326 task
= zalloc(sizeof(*task
));
329 strcpy(task
->comm
, comm
);
331 * every task starts in sleeping state - this gets ignored
332 * if there's no wakeup pointing to this sleep state:
334 add_sched_event_sleep(task
, 0, 0);
336 pid_to_task
[pid
] = task
;
338 tasks
= realloc(tasks
, nr_tasks
*sizeof(struct task_task
*));
340 tasks
[task
->nr
] = task
;
343 printf("registered task #%ld, PID %ld (%s)\n", nr_tasks
, pid
, comm
);
349 static void print_task_traces(void)
351 struct task_desc
*task
;
354 for (i
= 0; i
< nr_tasks
; i
++) {
356 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
357 task
->nr
, task
->comm
, task
->pid
, task
->nr_events
);
361 static void add_cross_task_wakeups(void)
363 struct task_desc
*task1
, *task2
;
366 for (i
= 0; i
< nr_tasks
; i
++) {
372 add_sched_event_wakeup(task1
, 0, task2
);
377 process_sched_event(struct task_desc
*this_task __used
, struct sched_atom
*atom
)
384 delta
= start_time
+ atom
->timestamp
- now
;
386 switch (atom
->type
) {
387 case SCHED_EVENT_RUN
:
388 burn_nsecs(atom
->duration
);
390 case SCHED_EVENT_SLEEP
:
392 ret
= sem_wait(atom
->wait_sem
);
395 case SCHED_EVENT_WAKEUP
:
397 ret
= sem_post(atom
->wait_sem
);
400 case SCHED_EVENT_MIGRATION
:
407 static u64
get_cpu_usage_nsec_parent(void)
413 err
= getrusage(RUSAGE_SELF
, &ru
);
416 sum
= ru
.ru_utime
.tv_sec
*1e9
+ ru
.ru_utime
.tv_usec
*1e3
;
417 sum
+= ru
.ru_stime
.tv_sec
*1e9
+ ru
.ru_stime
.tv_usec
*1e3
;
422 static u64
get_cpu_usage_nsec_self(void)
424 char filename
[] = "/proc/1234567890/sched";
425 unsigned long msecs
, nsecs
;
433 sprintf(filename
, "/proc/%d/sched", getpid());
434 file
= fopen(filename
, "r");
437 while ((chars
= getline(&line
, &len
, file
)) != -1) {
438 ret
= sscanf(line
, "se.sum_exec_runtime : %ld.%06ld\n",
441 total
= msecs
*1e6
+ nsecs
;
452 static void *thread_func(void *ctx
)
454 struct task_desc
*this_task
= ctx
;
455 u64 cpu_usage_0
, cpu_usage_1
;
456 unsigned long i
, ret
;
459 sprintf(comm2
, ":%s", this_task
->comm
);
460 prctl(PR_SET_NAME
, comm2
);
463 ret
= sem_post(&this_task
->ready_for_work
);
465 ret
= pthread_mutex_lock(&start_work_mutex
);
467 ret
= pthread_mutex_unlock(&start_work_mutex
);
470 cpu_usage_0
= get_cpu_usage_nsec_self();
472 for (i
= 0; i
< this_task
->nr_events
; i
++) {
473 this_task
->curr_event
= i
;
474 process_sched_event(this_task
, this_task
->atoms
[i
]);
477 cpu_usage_1
= get_cpu_usage_nsec_self();
478 this_task
->cpu_usage
= cpu_usage_1
- cpu_usage_0
;
480 ret
= sem_post(&this_task
->work_done_sem
);
483 ret
= pthread_mutex_lock(&work_done_wait_mutex
);
485 ret
= pthread_mutex_unlock(&work_done_wait_mutex
);
491 static void create_tasks(void)
493 struct task_desc
*task
;
498 err
= pthread_attr_init(&attr
);
500 err
= pthread_attr_setstacksize(&attr
, (size_t)(16*1024));
502 err
= pthread_mutex_lock(&start_work_mutex
);
504 err
= pthread_mutex_lock(&work_done_wait_mutex
);
506 for (i
= 0; i
< nr_tasks
; i
++) {
508 sem_init(&task
->sleep_sem
, 0, 0);
509 sem_init(&task
->ready_for_work
, 0, 0);
510 sem_init(&task
->work_done_sem
, 0, 0);
511 task
->curr_event
= 0;
512 err
= pthread_create(&task
->thread
, &attr
, thread_func
, task
);
517 static void wait_for_tasks(void)
519 u64 cpu_usage_0
, cpu_usage_1
;
520 struct task_desc
*task
;
521 unsigned long i
, ret
;
523 start_time
= get_nsecs();
525 pthread_mutex_unlock(&work_done_wait_mutex
);
527 for (i
= 0; i
< nr_tasks
; i
++) {
529 ret
= sem_wait(&task
->ready_for_work
);
531 sem_init(&task
->ready_for_work
, 0, 0);
533 ret
= pthread_mutex_lock(&work_done_wait_mutex
);
536 cpu_usage_0
= get_cpu_usage_nsec_parent();
538 pthread_mutex_unlock(&start_work_mutex
);
540 for (i
= 0; i
< nr_tasks
; i
++) {
542 ret
= sem_wait(&task
->work_done_sem
);
544 sem_init(&task
->work_done_sem
, 0, 0);
545 cpu_usage
+= task
->cpu_usage
;
549 cpu_usage_1
= get_cpu_usage_nsec_parent();
550 if (!runavg_cpu_usage
)
551 runavg_cpu_usage
= cpu_usage
;
552 runavg_cpu_usage
= (runavg_cpu_usage
*9 + cpu_usage
)/10;
554 parent_cpu_usage
= cpu_usage_1
- cpu_usage_0
;
555 if (!runavg_parent_cpu_usage
)
556 runavg_parent_cpu_usage
= parent_cpu_usage
;
557 runavg_parent_cpu_usage
= (runavg_parent_cpu_usage
*9 +
558 parent_cpu_usage
)/10;
560 ret
= pthread_mutex_lock(&start_work_mutex
);
563 for (i
= 0; i
< nr_tasks
; i
++) {
565 sem_init(&task
->sleep_sem
, 0, 0);
566 task
->curr_event
= 0;
570 static void run_one_test(void)
572 u64 T0
, T1
, delta
, avg_delta
, fluct
, std_dev
;
579 sum_runtime
+= delta
;
582 avg_delta
= sum_runtime
/ nr_runs
;
583 if (delta
< avg_delta
)
584 fluct
= avg_delta
- delta
;
586 fluct
= delta
- avg_delta
;
588 std_dev
= sum_fluct
/ nr_runs
/ sqrt(nr_runs
);
591 run_avg
= (run_avg
*9 + delta
)/10;
593 printf("#%-3ld: %0.3f, ",
594 nr_runs
, (double)delta
/1000000.0);
596 printf("ravg: %0.2f, ",
597 (double)run_avg
/1e6
);
599 printf("cpu: %0.2f / %0.2f",
600 (double)cpu_usage
/1e6
, (double)runavg_cpu_usage
/1e6
);
604 * rusage statistics done by the parent, these are less
605 * accurate than the sum_exec_runtime based statistics:
607 printf(" [%0.2f / %0.2f]",
608 (double)parent_cpu_usage
/1e6
,
609 (double)runavg_parent_cpu_usage
/1e6
);
614 if (nr_sleep_corrections
)
615 printf(" (%ld sleep corrections)\n", nr_sleep_corrections
);
616 nr_sleep_corrections
= 0;
619 static void test_calibrations(void)
627 printf("the run test took %Ld nsecs\n", T1
-T0
);
633 printf("the sleep test took %Ld nsecs\n", T1
-T0
);
637 process_comm_event(event_t
*event
, unsigned long offset
, unsigned long head
)
639 struct thread
*thread
= threads__findnew(event
->comm
.tid
);
641 dump_printf("%p [%p]: perf_event_comm: %s:%d\n",
642 (void *)(offset
+ head
),
643 (void *)(long)(event
->header
.size
),
644 event
->comm
.comm
, event
->comm
.pid
);
646 if (thread
== NULL
||
647 thread__set_comm(thread
, event
->comm
.comm
)) {
648 dump_printf("problem processing perf_event_comm, skipping event.\n");
657 struct raw_event_sample
{
662 #define FILL_FIELD(ptr, field, event, data) \
663 ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
665 #define FILL_ARRAY(ptr, array, event, data) \
667 void *__array = raw_field_ptr(event, #array, data); \
668 memcpy(ptr.array, __array, sizeof(ptr.array)); \
671 #define FILL_COMMON_FIELDS(ptr, event, data) \
673 FILL_FIELD(ptr, common_type, event, data); \
674 FILL_FIELD(ptr, common_flags, event, data); \
675 FILL_FIELD(ptr, common_preempt_count, event, data); \
676 FILL_FIELD(ptr, common_pid, event, data); \
677 FILL_FIELD(ptr, common_tgid, event, data); \
682 struct trace_switch_event
{
687 u8 common_preempt_count
;
700 struct trace_runtime_event
{
705 u8 common_preempt_count
;
715 struct trace_wakeup_event
{
720 u8 common_preempt_count
;
732 struct trace_fork_event
{
737 u8 common_preempt_count
;
741 char parent_comm
[16];
747 struct trace_migrate_task_event
{
752 u8 common_preempt_count
;
763 struct trace_sched_handler
{
764 void (*switch_event
)(struct trace_switch_event
*,
768 struct thread
*thread
);
770 void (*runtime_event
)(struct trace_runtime_event
*,
774 struct thread
*thread
);
776 void (*wakeup_event
)(struct trace_wakeup_event
*,
780 struct thread
*thread
);
782 void (*fork_event
)(struct trace_fork_event
*,
786 struct thread
*thread
);
788 void (*migrate_task_event
)(struct trace_migrate_task_event
*,
792 struct thread
*thread
);
797 replay_wakeup_event(struct trace_wakeup_event
*wakeup_event
,
800 u64 timestamp __used
,
801 struct thread
*thread __used
)
803 struct task_desc
*waker
, *wakee
;
806 printf("sched_wakeup event %p\n", event
);
808 printf(" ... pid %d woke up %s/%d\n",
809 wakeup_event
->common_pid
,
814 waker
= register_pid(wakeup_event
->common_pid
, "<unknown>");
815 wakee
= register_pid(wakeup_event
->pid
, wakeup_event
->comm
);
817 add_sched_event_wakeup(waker
, timestamp
, wakee
);
820 static u64 cpu_last_switched
[MAX_CPUS
];
823 replay_switch_event(struct trace_switch_event
*switch_event
,
827 struct thread
*thread __used
)
829 struct task_desc
*prev
, *next
;
834 printf("sched_switch event %p\n", event
);
836 if (cpu
>= MAX_CPUS
|| cpu
< 0)
839 timestamp0
= cpu_last_switched
[cpu
];
841 delta
= timestamp
- timestamp0
;
846 die("hm, delta: %Ld < 0 ?\n", delta
);
849 printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n",
850 switch_event
->prev_comm
, switch_event
->prev_pid
,
851 switch_event
->next_comm
, switch_event
->next_pid
,
855 prev
= register_pid(switch_event
->prev_pid
, switch_event
->prev_comm
);
856 next
= register_pid(switch_event
->next_pid
, switch_event
->next_comm
);
858 cpu_last_switched
[cpu
] = timestamp
;
860 add_sched_event_run(prev
, timestamp
, delta
);
861 add_sched_event_sleep(prev
, timestamp
, switch_event
->prev_state
);
866 replay_fork_event(struct trace_fork_event
*fork_event
,
869 u64 timestamp __used
,
870 struct thread
*thread __used
)
873 printf("sched_fork event %p\n", event
);
874 printf("... parent: %s/%d\n", fork_event
->parent_comm
, fork_event
->parent_pid
);
875 printf("... child: %s/%d\n", fork_event
->child_comm
, fork_event
->child_pid
);
877 register_pid(fork_event
->parent_pid
, fork_event
->parent_comm
);
878 register_pid(fork_event
->child_pid
, fork_event
->child_comm
);
881 static struct trace_sched_handler replay_ops
= {
882 .wakeup_event
= replay_wakeup_event
,
883 .switch_event
= replay_switch_event
,
884 .fork_event
= replay_fork_event
,
887 struct sort_dimension
{
890 struct list_head list
;
893 static LIST_HEAD(cmp_pid
);
896 thread_lat_cmp(struct list_head
*list
, struct work_atoms
*l
, struct work_atoms
*r
)
898 struct sort_dimension
*sort
;
901 BUG_ON(list_empty(list
));
903 list_for_each_entry(sort
, list
, list
) {
904 ret
= sort
->cmp(l
, r
);
912 static struct work_atoms
*
913 thread_atoms_search(struct rb_root
*root
, struct thread
*thread
,
914 struct list_head
*sort_list
)
916 struct rb_node
*node
= root
->rb_node
;
917 struct work_atoms key
= { .thread
= thread
};
920 struct work_atoms
*atoms
;
923 atoms
= container_of(node
, struct work_atoms
, node
);
925 cmp
= thread_lat_cmp(sort_list
, &key
, atoms
);
927 node
= node
->rb_left
;
929 node
= node
->rb_right
;
931 BUG_ON(thread
!= atoms
->thread
);
939 __thread_latency_insert(struct rb_root
*root
, struct work_atoms
*data
,
940 struct list_head
*sort_list
)
942 struct rb_node
**new = &(root
->rb_node
), *parent
= NULL
;
945 struct work_atoms
*this;
948 this = container_of(*new, struct work_atoms
, node
);
951 cmp
= thread_lat_cmp(sort_list
, data
, this);
954 new = &((*new)->rb_left
);
956 new = &((*new)->rb_right
);
959 rb_link_node(&data
->node
, parent
, new);
960 rb_insert_color(&data
->node
, root
);
963 static void thread_atoms_insert(struct thread
*thread
)
965 struct work_atoms
*atoms
= zalloc(sizeof(*atoms
));
969 atoms
->thread
= thread
;
970 INIT_LIST_HEAD(&atoms
->work_list
);
971 __thread_latency_insert(&atom_root
, atoms
, &cmp_pid
);
975 latency_fork_event(struct trace_fork_event
*fork_event __used
,
976 struct event
*event __used
,
978 u64 timestamp __used
,
979 struct thread
*thread __used
)
981 /* should insert the newcomer */
985 static char sched_out_state(struct trace_switch_event
*switch_event
)
987 const char *str
= TASK_STATE_TO_CHAR_STR
;
989 return str
[switch_event
->prev_state
];
993 add_sched_out_event(struct work_atoms
*atoms
,
997 struct work_atom
*atom
= zalloc(sizeof(*atom
));
1001 atom
->sched_out_time
= timestamp
;
1003 if (run_state
== 'R') {
1004 atom
->state
= THREAD_WAIT_CPU
;
1005 atom
->wake_up_time
= atom
->sched_out_time
;
1008 list_add_tail(&atom
->list
, &atoms
->work_list
);
1012 add_runtime_event(struct work_atoms
*atoms
, u64 delta
, u64 timestamp __used
)
1014 struct work_atom
*atom
;
1016 BUG_ON(list_empty(&atoms
->work_list
));
1018 atom
= list_entry(atoms
->work_list
.prev
, struct work_atom
, list
);
1020 atom
->runtime
+= delta
;
1021 atoms
->total_runtime
+= delta
;
1025 add_sched_in_event(struct work_atoms
*atoms
, u64 timestamp
)
1027 struct work_atom
*atom
;
1030 if (list_empty(&atoms
->work_list
))
1033 atom
= list_entry(atoms
->work_list
.prev
, struct work_atom
, list
);
1035 if (atom
->state
!= THREAD_WAIT_CPU
)
1038 if (timestamp
< atom
->wake_up_time
) {
1039 atom
->state
= THREAD_IGNORE
;
1043 atom
->state
= THREAD_SCHED_IN
;
1044 atom
->sched_in_time
= timestamp
;
1046 delta
= atom
->sched_in_time
- atom
->wake_up_time
;
1047 atoms
->total_lat
+= delta
;
1048 if (delta
> atoms
->max_lat
)
1049 atoms
->max_lat
= delta
;
1054 latency_switch_event(struct trace_switch_event
*switch_event
,
1055 struct event
*event __used
,
1058 struct thread
*thread __used
)
1060 struct work_atoms
*out_events
, *in_events
;
1061 struct thread
*sched_out
, *sched_in
;
1065 BUG_ON(cpu
>= MAX_CPUS
|| cpu
< 0);
1067 timestamp0
= cpu_last_switched
[cpu
];
1068 cpu_last_switched
[cpu
] = timestamp
;
1070 delta
= timestamp
- timestamp0
;
1075 die("hm, delta: %Ld < 0 ?\n", delta
);
1078 sched_out
= threads__findnew(switch_event
->prev_pid
);
1079 sched_in
= threads__findnew(switch_event
->next_pid
);
1081 out_events
= thread_atoms_search(&atom_root
, sched_out
, &cmp_pid
);
1083 thread_atoms_insert(sched_out
);
1084 out_events
= thread_atoms_search(&atom_root
, sched_out
, &cmp_pid
);
1086 die("out-event: Internal tree error");
1088 add_sched_out_event(out_events
, sched_out_state(switch_event
), timestamp
);
1090 in_events
= thread_atoms_search(&atom_root
, sched_in
, &cmp_pid
);
1092 thread_atoms_insert(sched_in
);
1093 in_events
= thread_atoms_search(&atom_root
, sched_in
, &cmp_pid
);
1095 die("in-event: Internal tree error");
1097 * Take came in we have not heard about yet,
1098 * add in an initial atom in runnable state:
1100 add_sched_out_event(in_events
, 'R', timestamp
);
1102 add_sched_in_event(in_events
, timestamp
);
1106 latency_runtime_event(struct trace_runtime_event
*runtime_event
,
1107 struct event
*event __used
,
1110 struct thread
*this_thread __used
)
1112 struct thread
*thread
= threads__findnew(runtime_event
->pid
);
1113 struct work_atoms
*atoms
= thread_atoms_search(&atom_root
, thread
, &cmp_pid
);
1115 BUG_ON(cpu
>= MAX_CPUS
|| cpu
< 0);
1117 thread_atoms_insert(thread
);
1118 atoms
= thread_atoms_search(&atom_root
, thread
, &cmp_pid
);
1120 die("in-event: Internal tree error");
1121 add_sched_out_event(atoms
, 'R', timestamp
);
1124 add_runtime_event(atoms
, runtime_event
->runtime
, timestamp
);
1128 latency_wakeup_event(struct trace_wakeup_event
*wakeup_event
,
1129 struct event
*__event __used
,
1132 struct thread
*thread __used
)
1134 struct work_atoms
*atoms
;
1135 struct work_atom
*atom
;
1136 struct thread
*wakee
;
1138 /* Note for later, it may be interesting to observe the failing cases */
1139 if (!wakeup_event
->success
)
1142 wakee
= threads__findnew(wakeup_event
->pid
);
1143 atoms
= thread_atoms_search(&atom_root
, wakee
, &cmp_pid
);
1145 thread_atoms_insert(wakee
);
1146 atoms
= thread_atoms_search(&atom_root
, wakee
, &cmp_pid
);
1148 die("wakeup-event: Internal tree error");
1149 add_sched_out_event(atoms
, 'S', timestamp
);
1152 BUG_ON(list_empty(&atoms
->work_list
));
1154 atom
= list_entry(atoms
->work_list
.prev
, struct work_atom
, list
);
1157 * You WILL be missing events if you've recorded only
1158 * one CPU, or are only looking at only one, so don't
1159 * make useless noise.
1161 if (profile_cpu
== -1 && atom
->state
!= THREAD_SLEEPING
)
1162 nr_state_machine_bugs
++;
1165 if (atom
->sched_out_time
> timestamp
) {
1166 nr_unordered_timestamps
++;
1170 atom
->state
= THREAD_WAIT_CPU
;
1171 atom
->wake_up_time
= timestamp
;
1175 latency_migrate_task_event(struct trace_migrate_task_event
*migrate_task_event
,
1176 struct event
*__event __used
,
1179 struct thread
*thread __used
)
1181 struct work_atoms
*atoms
;
1182 struct work_atom
*atom
;
1183 struct thread
*migrant
;
1186 * Only need to worry about migration when profiling one CPU.
1188 if (profile_cpu
== -1)
1191 migrant
= threads__findnew(migrate_task_event
->pid
);
1192 atoms
= thread_atoms_search(&atom_root
, migrant
, &cmp_pid
);
1194 thread_atoms_insert(migrant
);
1195 register_pid(migrant
->pid
, migrant
->comm
);
1196 atoms
= thread_atoms_search(&atom_root
, migrant
, &cmp_pid
);
1198 die("migration-event: Internal tree error");
1199 add_sched_out_event(atoms
, 'R', timestamp
);
1202 BUG_ON(list_empty(&atoms
->work_list
));
1204 atom
= list_entry(atoms
->work_list
.prev
, struct work_atom
, list
);
1205 atom
->sched_in_time
= atom
->sched_out_time
= atom
->wake_up_time
= timestamp
;
1209 if (atom
->sched_out_time
> timestamp
)
1210 nr_unordered_timestamps
++;
1213 static struct trace_sched_handler lat_ops
= {
1214 .wakeup_event
= latency_wakeup_event
,
1215 .switch_event
= latency_switch_event
,
1216 .runtime_event
= latency_runtime_event
,
1217 .fork_event
= latency_fork_event
,
1218 .migrate_task_event
= latency_migrate_task_event
,
1221 static void output_lat_thread(struct work_atoms
*work_list
)
1227 if (!work_list
->nb_atoms
)
1230 * Ignore idle threads:
1232 if (!strcmp(work_list
->thread
->comm
, "swapper"))
1235 all_runtime
+= work_list
->total_runtime
;
1236 all_count
+= work_list
->nb_atoms
;
1238 ret
= printf(" %s:%d ", work_list
->thread
->comm
, work_list
->thread
->pid
);
1240 for (i
= 0; i
< 24 - ret
; i
++)
1243 avg
= work_list
->total_lat
/ work_list
->nb_atoms
;
1245 printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n",
1246 (double)work_list
->total_runtime
/ 1e6
,
1247 work_list
->nb_atoms
, (double)avg
/ 1e6
,
1248 (double)work_list
->max_lat
/ 1e6
);
1251 static int pid_cmp(struct work_atoms
*l
, struct work_atoms
*r
)
1253 if (l
->thread
->pid
< r
->thread
->pid
)
1255 if (l
->thread
->pid
> r
->thread
->pid
)
1261 static struct sort_dimension pid_sort_dimension
= {
1266 static int avg_cmp(struct work_atoms
*l
, struct work_atoms
*r
)
1276 avgl
= l
->total_lat
/ l
->nb_atoms
;
1277 avgr
= r
->total_lat
/ r
->nb_atoms
;
1287 static struct sort_dimension avg_sort_dimension
= {
1292 static int max_cmp(struct work_atoms
*l
, struct work_atoms
*r
)
1294 if (l
->max_lat
< r
->max_lat
)
1296 if (l
->max_lat
> r
->max_lat
)
1302 static struct sort_dimension max_sort_dimension
= {
1307 static int switch_cmp(struct work_atoms
*l
, struct work_atoms
*r
)
1309 if (l
->nb_atoms
< r
->nb_atoms
)
1311 if (l
->nb_atoms
> r
->nb_atoms
)
1317 static struct sort_dimension switch_sort_dimension
= {
1322 static int runtime_cmp(struct work_atoms
*l
, struct work_atoms
*r
)
1324 if (l
->total_runtime
< r
->total_runtime
)
1326 if (l
->total_runtime
> r
->total_runtime
)
1332 static struct sort_dimension runtime_sort_dimension
= {
1337 static struct sort_dimension
*available_sorts
[] = {
1338 &pid_sort_dimension
,
1339 &avg_sort_dimension
,
1340 &max_sort_dimension
,
1341 &switch_sort_dimension
,
1342 &runtime_sort_dimension
,
1345 #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *))
1347 static LIST_HEAD(sort_list
);
1349 static int sort_dimension__add(const char *tok
, struct list_head
*list
)
1353 for (i
= 0; i
< NB_AVAILABLE_SORTS
; i
++) {
1354 if (!strcmp(available_sorts
[i
]->name
, tok
)) {
1355 list_add_tail(&available_sorts
[i
]->list
, list
);
1364 static void setup_sorting(void);
1366 static void sort_lat(void)
1368 struct rb_node
*node
;
1371 struct work_atoms
*data
;
1372 node
= rb_first(&atom_root
);
1376 rb_erase(node
, &atom_root
);
1377 data
= rb_entry(node
, struct work_atoms
, node
);
1378 __thread_latency_insert(&sorted_atom_root
, data
, &sort_list
);
1382 static struct trace_sched_handler
*trace_handler
;
1385 process_sched_wakeup_event(struct raw_event_sample
*raw
,
1386 struct event
*event
,
1388 u64 timestamp __used
,
1389 struct thread
*thread __used
)
1391 struct trace_wakeup_event wakeup_event
;
1393 FILL_COMMON_FIELDS(wakeup_event
, event
, raw
->data
);
1395 FILL_ARRAY(wakeup_event
, comm
, event
, raw
->data
);
1396 FILL_FIELD(wakeup_event
, pid
, event
, raw
->data
);
1397 FILL_FIELD(wakeup_event
, prio
, event
, raw
->data
);
1398 FILL_FIELD(wakeup_event
, success
, event
, raw
->data
);
1399 FILL_FIELD(wakeup_event
, cpu
, event
, raw
->data
);
1401 if (trace_handler
->wakeup_event
)
1402 trace_handler
->wakeup_event(&wakeup_event
, event
, cpu
, timestamp
, thread
);
1406 * Track the current task - that way we can know whether there's any
1407 * weird events, such as a task being switched away that is not current.
1411 static u32 curr_pid
[MAX_CPUS
] = { [0 ... MAX_CPUS
-1] = -1 };
1413 static struct thread
*curr_thread
[MAX_CPUS
];
1415 static char next_shortname1
= 'A';
1416 static char next_shortname2
= '0';
1419 map_switch_event(struct trace_switch_event
*switch_event
,
1420 struct event
*event __used
,
1423 struct thread
*thread __used
)
1425 struct thread
*sched_out
, *sched_in
;
1431 BUG_ON(this_cpu
>= MAX_CPUS
|| this_cpu
< 0);
1433 if (this_cpu
> max_cpu
)
1436 timestamp0
= cpu_last_switched
[this_cpu
];
1437 cpu_last_switched
[this_cpu
] = timestamp
;
1439 delta
= timestamp
- timestamp0
;
1444 die("hm, delta: %Ld < 0 ?\n", delta
);
1447 sched_out
= threads__findnew(switch_event
->prev_pid
);
1448 sched_in
= threads__findnew(switch_event
->next_pid
);
1450 curr_thread
[this_cpu
] = sched_in
;
1455 if (!sched_in
->shortname
[0]) {
1456 sched_in
->shortname
[0] = next_shortname1
;
1457 sched_in
->shortname
[1] = next_shortname2
;
1459 if (next_shortname1
< 'Z') {
1462 next_shortname1
='A';
1463 if (next_shortname2
< '9') {
1466 next_shortname2
='0';
1472 for (cpu
= 0; cpu
<= max_cpu
; cpu
++) {
1473 if (cpu
!= this_cpu
)
1478 if (curr_thread
[cpu
]) {
1479 if (curr_thread
[cpu
]->pid
)
1480 printf("%2s ", curr_thread
[cpu
]->shortname
);
1487 printf(" %12.6f secs ", (double)timestamp
/1e9
);
1488 if (new_shortname
) {
1489 printf("%s => %s:%d\n",
1490 sched_in
->shortname
, sched_in
->comm
, sched_in
->pid
);
1498 process_sched_switch_event(struct raw_event_sample
*raw
,
1499 struct event
*event
,
1501 u64 timestamp __used
,
1502 struct thread
*thread __used
)
1504 struct trace_switch_event switch_event
;
1506 FILL_COMMON_FIELDS(switch_event
, event
, raw
->data
);
1508 FILL_ARRAY(switch_event
, prev_comm
, event
, raw
->data
);
1509 FILL_FIELD(switch_event
, prev_pid
, event
, raw
->data
);
1510 FILL_FIELD(switch_event
, prev_prio
, event
, raw
->data
);
1511 FILL_FIELD(switch_event
, prev_state
, event
, raw
->data
);
1512 FILL_ARRAY(switch_event
, next_comm
, event
, raw
->data
);
1513 FILL_FIELD(switch_event
, next_pid
, event
, raw
->data
);
1514 FILL_FIELD(switch_event
, next_prio
, event
, raw
->data
);
1516 if (curr_pid
[this_cpu
] != (u32
)-1) {
1518 * Are we trying to switch away a PID that is
1521 if (curr_pid
[this_cpu
] != switch_event
.prev_pid
)
1522 nr_context_switch_bugs
++;
1524 if (trace_handler
->switch_event
)
1525 trace_handler
->switch_event(&switch_event
, event
, this_cpu
, timestamp
, thread
);
1527 curr_pid
[this_cpu
] = switch_event
.next_pid
;
1531 process_sched_runtime_event(struct raw_event_sample
*raw
,
1532 struct event
*event
,
1534 u64 timestamp __used
,
1535 struct thread
*thread __used
)
1537 struct trace_runtime_event runtime_event
;
1539 FILL_ARRAY(runtime_event
, comm
, event
, raw
->data
);
1540 FILL_FIELD(runtime_event
, pid
, event
, raw
->data
);
1541 FILL_FIELD(runtime_event
, runtime
, event
, raw
->data
);
1542 FILL_FIELD(runtime_event
, vruntime
, event
, raw
->data
);
1544 if (trace_handler
->runtime_event
)
1545 trace_handler
->runtime_event(&runtime_event
, event
, cpu
, timestamp
, thread
);
1549 process_sched_fork_event(struct raw_event_sample
*raw
,
1550 struct event
*event
,
1552 u64 timestamp __used
,
1553 struct thread
*thread __used
)
1555 struct trace_fork_event fork_event
;
1557 FILL_COMMON_FIELDS(fork_event
, event
, raw
->data
);
1559 FILL_ARRAY(fork_event
, parent_comm
, event
, raw
->data
);
1560 FILL_FIELD(fork_event
, parent_pid
, event
, raw
->data
);
1561 FILL_ARRAY(fork_event
, child_comm
, event
, raw
->data
);
1562 FILL_FIELD(fork_event
, child_pid
, event
, raw
->data
);
1564 if (trace_handler
->fork_event
)
1565 trace_handler
->fork_event(&fork_event
, event
, cpu
, timestamp
, thread
);
1569 process_sched_exit_event(struct event
*event
,
1571 u64 timestamp __used
,
1572 struct thread
*thread __used
)
1575 printf("sched_exit event %p\n", event
);
1579 process_sched_migrate_task_event(struct raw_event_sample
*raw
,
1580 struct event
*event
,
1582 u64 timestamp __used
,
1583 struct thread
*thread __used
)
1585 struct trace_migrate_task_event migrate_task_event
;
1587 FILL_COMMON_FIELDS(migrate_task_event
, event
, raw
->data
);
1589 FILL_ARRAY(migrate_task_event
, comm
, event
, raw
->data
);
1590 FILL_FIELD(migrate_task_event
, pid
, event
, raw
->data
);
1591 FILL_FIELD(migrate_task_event
, prio
, event
, raw
->data
);
1592 FILL_FIELD(migrate_task_event
, cpu
, event
, raw
->data
);
1594 if (trace_handler
->migrate_task_event
)
1595 trace_handler
->migrate_task_event(&migrate_task_event
, event
, cpu
, timestamp
, thread
);
1599 process_raw_event(event_t
*raw_event __used
, void *more_data
,
1600 int cpu
, u64 timestamp
, struct thread
*thread
)
1602 struct raw_event_sample
*raw
= more_data
;
1603 struct event
*event
;
1606 type
= trace_parse_common_type(raw
->data
);
1607 event
= trace_find_event(type
);
1609 if (!strcmp(event
->name
, "sched_switch"))
1610 process_sched_switch_event(raw
, event
, cpu
, timestamp
, thread
);
1611 if (!strcmp(event
->name
, "sched_stat_runtime"))
1612 process_sched_runtime_event(raw
, event
, cpu
, timestamp
, thread
);
1613 if (!strcmp(event
->name
, "sched_wakeup"))
1614 process_sched_wakeup_event(raw
, event
, cpu
, timestamp
, thread
);
1615 if (!strcmp(event
->name
, "sched_wakeup_new"))
1616 process_sched_wakeup_event(raw
, event
, cpu
, timestamp
, thread
);
1617 if (!strcmp(event
->name
, "sched_process_fork"))
1618 process_sched_fork_event(raw
, event
, cpu
, timestamp
, thread
);
1619 if (!strcmp(event
->name
, "sched_process_exit"))
1620 process_sched_exit_event(event
, cpu
, timestamp
, thread
);
1621 if (!strcmp(event
->name
, "sched_migrate_task"))
1622 process_sched_migrate_task_event(raw
, event
, cpu
, timestamp
, thread
);
1626 process_sample_event(event_t
*event
, unsigned long offset
, unsigned long head
)
1628 struct thread
*thread
;
1629 u64 ip
= event
->ip
.ip
;
1633 void *more_data
= event
->ip
.__more_data
;
1635 if (!(sample_type
& PERF_SAMPLE_RAW
))
1638 thread
= threads__findnew(event
->ip
.pid
);
1640 if (sample_type
& PERF_SAMPLE_TIME
) {
1641 timestamp
= *(u64
*)more_data
;
1642 more_data
+= sizeof(u64
);
1645 if (sample_type
& PERF_SAMPLE_CPU
) {
1646 cpu
= *(u32
*)more_data
;
1647 more_data
+= sizeof(u32
);
1648 more_data
+= sizeof(u32
); /* reserved */
1651 if (sample_type
& PERF_SAMPLE_PERIOD
) {
1652 period
= *(u64
*)more_data
;
1653 more_data
+= sizeof(u64
);
1656 dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
1657 (void *)(offset
+ head
),
1658 (void *)(long)(event
->header
.size
),
1660 event
->ip
.pid
, event
->ip
.tid
,
1664 if (thread
== NULL
) {
1665 pr_debug("problem processing %d event, skipping it.\n",
1666 event
->header
.type
);
1670 dump_printf(" ... thread: %s:%d\n", thread
->comm
, thread
->pid
);
1672 if (profile_cpu
!= -1 && profile_cpu
!= (int) cpu
)
1675 process_raw_event(event
, more_data
, cpu
, timestamp
, thread
);
1681 process_lost_event(event_t
*event __used
,
1682 unsigned long offset __used
,
1683 unsigned long head __used
)
1686 nr_lost_events
+= event
->lost
.lost
;
1691 static int sample_type_check(u64 type
)
1695 if (!(sample_type
& PERF_SAMPLE_RAW
)) {
1697 "No trace sample to read. Did you call perf record "
1705 static struct perf_file_handler file_handler
= {
1706 .process_sample_event
= process_sample_event
,
1707 .process_comm_event
= process_comm_event
,
1708 .process_lost_event
= process_lost_event
,
1709 .sample_type_check
= sample_type_check
,
1712 static int read_events(void)
1714 register_idle_thread();
1715 register_perf_file_handler(&file_handler
);
1717 return mmap_dispatch_perf_file(&header
, input_name
, 0, 0,
1721 static void print_bad_events(void)
1723 if (nr_unordered_timestamps
&& nr_timestamps
) {
1724 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
1725 (double)nr_unordered_timestamps
/(double)nr_timestamps
*100.0,
1726 nr_unordered_timestamps
, nr_timestamps
);
1728 if (nr_lost_events
&& nr_events
) {
1729 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
1730 (double)nr_lost_events
/(double)nr_events
*100.0,
1731 nr_lost_events
, nr_events
, nr_lost_chunks
);
1733 if (nr_state_machine_bugs
&& nr_timestamps
) {
1734 printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)",
1735 (double)nr_state_machine_bugs
/(double)nr_timestamps
*100.0,
1736 nr_state_machine_bugs
, nr_timestamps
);
1738 printf(" (due to lost events?)");
1741 if (nr_context_switch_bugs
&& nr_timestamps
) {
1742 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
1743 (double)nr_context_switch_bugs
/(double)nr_timestamps
*100.0,
1744 nr_context_switch_bugs
, nr_timestamps
);
1746 printf(" (due to lost events?)");
1751 static void __cmd_lat(void)
1753 struct rb_node
*next
;
1759 printf("\n -----------------------------------------------------------------------------------------\n");
1760 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n");
1761 printf(" -----------------------------------------------------------------------------------------\n");
1763 next
= rb_first(&sorted_atom_root
);
1766 struct work_atoms
*work_list
;
1768 work_list
= rb_entry(next
, struct work_atoms
, node
);
1769 output_lat_thread(work_list
);
1770 next
= rb_next(next
);
1773 printf(" -----------------------------------------------------------------------------------------\n");
1774 printf(" TOTAL: |%11.3f ms |%9Ld |\n",
1775 (double)all_runtime
/1e6
, all_count
);
1777 printf(" ---------------------------------------------------\n");
1784 static struct trace_sched_handler map_ops
= {
1785 .wakeup_event
= NULL
,
1786 .switch_event
= map_switch_event
,
1787 .runtime_event
= NULL
,
1791 static void __cmd_map(void)
1793 max_cpu
= sysconf(_SC_NPROCESSORS_CONF
);
1800 static void __cmd_replay(void)
1804 calibrate_run_measurement_overhead();
1805 calibrate_sleep_measurement_overhead();
1807 test_calibrations();
1811 printf("nr_run_events: %ld\n", nr_run_events
);
1812 printf("nr_sleep_events: %ld\n", nr_sleep_events
);
1813 printf("nr_wakeup_events: %ld\n", nr_wakeup_events
);
1815 if (targetless_wakeups
)
1816 printf("target-less wakeups: %ld\n", targetless_wakeups
);
1817 if (multitarget_wakeups
)
1818 printf("multi-target wakeups: %ld\n", multitarget_wakeups
);
1819 if (nr_run_events_optimized
)
1820 printf("run atoms optimized: %ld\n",
1821 nr_run_events_optimized
);
1823 print_task_traces();
1824 add_cross_task_wakeups();
1827 printf("------------------------------------------------------------\n");
1828 for (i
= 0; i
< replay_repeat
; i
++)
1833 static const char * const sched_usage
[] = {
1834 "perf sched [<options>] {record|latency|map|replay|trace}",
1838 static const struct option sched_options
[] = {
1839 OPT_STRING('i', "input", &input_name
, "file",
1841 OPT_BOOLEAN('v', "verbose", &verbose
,
1842 "be more verbose (show symbol address, etc)"),
1843 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace
,
1844 "dump raw trace in ASCII"),
1848 static const char * const latency_usage
[] = {
1849 "perf sched latency [<options>]",
1853 static const struct option latency_options
[] = {
1854 OPT_STRING('s', "sort", &sort_order
, "key[,key2...]",
1855 "sort by key(s): runtime, switch, avg, max"),
1856 OPT_BOOLEAN('v', "verbose", &verbose
,
1857 "be more verbose (show symbol address, etc)"),
1858 OPT_INTEGER('C', "CPU", &profile_cpu
,
1859 "CPU to profile on"),
1860 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace
,
1861 "dump raw trace in ASCII"),
1865 static const char * const replay_usage
[] = {
1866 "perf sched replay [<options>]",
1870 static const struct option replay_options
[] = {
1871 OPT_INTEGER('r', "repeat", &replay_repeat
,
1872 "repeat the workload replay N times (-1: infinite)"),
1873 OPT_BOOLEAN('v', "verbose", &verbose
,
1874 "be more verbose (show symbol address, etc)"),
1875 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace
,
1876 "dump raw trace in ASCII"),
1880 static void setup_sorting(void)
1882 char *tmp
, *tok
, *str
= strdup(sort_order
);
1884 for (tok
= strtok_r(str
, ", ", &tmp
);
1885 tok
; tok
= strtok_r(NULL
, ", ", &tmp
)) {
1886 if (sort_dimension__add(tok
, &sort_list
) < 0) {
1887 error("Unknown --sort key: `%s'", tok
);
1888 usage_with_options(latency_usage
, latency_options
);
1894 sort_dimension__add("pid", &cmp_pid
);
1897 static const char *record_args
[] = {
1905 "-e", "sched:sched_switch:r",
1906 "-e", "sched:sched_stat_wait:r",
1907 "-e", "sched:sched_stat_sleep:r",
1908 "-e", "sched:sched_stat_iowait:r",
1909 "-e", "sched:sched_stat_runtime:r",
1910 "-e", "sched:sched_process_exit:r",
1911 "-e", "sched:sched_process_fork:r",
1912 "-e", "sched:sched_wakeup:r",
1913 "-e", "sched:sched_migrate_task:r",
1916 static int __cmd_record(int argc
, const char **argv
)
1918 unsigned int rec_argc
, i
, j
;
1919 const char **rec_argv
;
1921 rec_argc
= ARRAY_SIZE(record_args
) + argc
- 1;
1922 rec_argv
= calloc(rec_argc
+ 1, sizeof(char *));
1924 for (i
= 0; i
< ARRAY_SIZE(record_args
); i
++)
1925 rec_argv
[i
] = strdup(record_args
[i
]);
1927 for (j
= 1; j
< (unsigned int)argc
; j
++, i
++)
1928 rec_argv
[i
] = argv
[j
];
1930 BUG_ON(i
!= rec_argc
);
1932 return cmd_record(i
, rec_argv
, NULL
);
1935 int cmd_sched(int argc
, const char **argv
, const char *prefix __used
)
1939 argc
= parse_options(argc
, argv
, sched_options
, sched_usage
,
1940 PARSE_OPT_STOP_AT_NON_OPTION
);
1942 usage_with_options(sched_usage
, sched_options
);
1944 if (!strncmp(argv
[0], "rec", 3)) {
1945 return __cmd_record(argc
, argv
);
1946 } else if (!strncmp(argv
[0], "lat", 3)) {
1947 trace_handler
= &lat_ops
;
1949 argc
= parse_options(argc
, argv
, latency_options
, latency_usage
, 0);
1951 usage_with_options(latency_usage
, latency_options
);
1955 } else if (!strcmp(argv
[0], "map")) {
1956 trace_handler
= &map_ops
;
1959 } else if (!strncmp(argv
[0], "rep", 3)) {
1960 trace_handler
= &replay_ops
;
1962 argc
= parse_options(argc
, argv
, replay_options
, replay_usage
, 0);
1964 usage_with_options(replay_usage
, replay_options
);
1967 } else if (!strcmp(argv
[0], "trace")) {
1969 * Aliased to 'perf trace' for now:
1971 return cmd_trace(argc
, argv
, prefix
);
1973 usage_with_options(sched_usage
, sched_options
);