mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-21 20:04:01 +00:00
1ac9bc6943
If CONFIG_SCHEDSTATS is defined, the kernel maintains information about how long the task was sleeping or in the case of iowait, blocking in the kernel before getting woken up. This will be useful for sleep time profiling. Note: this information is only provided for sched_fair. Other scheduling classes may choose to provide this in the future. Note: the delay includes the time spent on the runqueue as well. Signed-off-by: Arun Sharma <asharma@fb.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Andrew Vagin <avagin@openvz.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1324512940-32060-2-git-send-email-asharma@fb.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
455 lines
10 KiB
C
455 lines
10 KiB
C
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM sched
|
|
|
|
#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_SCHED_H
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
/*
|
|
* Tracepoint for calling kthread_stop, performed to end a kthread:
|
|
*/
|
|
TRACE_EVENT(sched_kthread_stop,
|
|
|
|
TP_PROTO(struct task_struct *t),
|
|
|
|
TP_ARGS(t),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
|
|
__entry->pid = t->pid;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for the return value of the kthread stopping:
|
|
*/
|
|
TRACE_EVENT(sched_kthread_stop_ret,
|
|
|
|
TP_PROTO(int ret),
|
|
|
|
TP_ARGS(ret),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( int, ret )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ret = ret;
|
|
),
|
|
|
|
TP_printk("ret=%d", __entry->ret)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for waking up a task:
|
|
*/
|
|
DECLARE_EVENT_CLASS(sched_wakeup_template,
|
|
|
|
TP_PROTO(struct task_struct *p, int success),
|
|
|
|
TP_ARGS(p, success),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( int, prio )
|
|
__field( int, success )
|
|
__field( int, target_cpu )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
|
|
__entry->pid = p->pid;
|
|
__entry->prio = p->prio;
|
|
__entry->success = success;
|
|
__entry->target_cpu = task_cpu(p);
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
|
|
__entry->comm, __entry->pid, __entry->prio,
|
|
__entry->success, __entry->target_cpu)
|
|
);
|
|
|
|
DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
|
|
TP_PROTO(struct task_struct *p, int success),
|
|
TP_ARGS(p, success));
|
|
|
|
/*
|
|
* Tracepoint for waking up a new task:
|
|
*/
|
|
DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
|
|
TP_PROTO(struct task_struct *p, int success),
|
|
TP_ARGS(p, success));
|
|
|
|
#ifdef CREATE_TRACE_POINTS
|
|
static inline long __trace_sched_switch_state(struct task_struct *p)
|
|
{
|
|
long state = p->state;
|
|
|
|
#ifdef CONFIG_PREEMPT
|
|
/*
|
|
* For all intents and purposes a preempted task is a running task.
|
|
*/
|
|
if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
|
|
state = TASK_RUNNING | TASK_STATE_MAX;
|
|
#endif
|
|
|
|
return state;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Tracepoint for task switches, performed by the scheduler:
|
|
*/
|
|
TRACE_EVENT(sched_switch,
|
|
|
|
TP_PROTO(struct task_struct *prev,
|
|
struct task_struct *next),
|
|
|
|
TP_ARGS(prev, next),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, prev_comm, TASK_COMM_LEN )
|
|
__field( pid_t, prev_pid )
|
|
__field( int, prev_prio )
|
|
__field( long, prev_state )
|
|
__array( char, next_comm, TASK_COMM_LEN )
|
|
__field( pid_t, next_pid )
|
|
__field( int, next_prio )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
|
|
__entry->prev_pid = prev->pid;
|
|
__entry->prev_prio = prev->prio;
|
|
__entry->prev_state = __trace_sched_switch_state(prev);
|
|
memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
|
|
__entry->next_pid = next->pid;
|
|
__entry->next_prio = next->prio;
|
|
),
|
|
|
|
TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
|
|
__entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
|
|
__entry->prev_state & (TASK_STATE_MAX-1) ?
|
|
__print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
|
|
{ 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
|
|
{ 16, "Z" }, { 32, "X" }, { 64, "x" },
|
|
{ 128, "W" }) : "R",
|
|
__entry->prev_state & TASK_STATE_MAX ? "+" : "",
|
|
__entry->next_comm, __entry->next_pid, __entry->next_prio)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for a task being migrated:
|
|
*/
|
|
TRACE_EVENT(sched_migrate_task,
|
|
|
|
TP_PROTO(struct task_struct *p, int dest_cpu),
|
|
|
|
TP_ARGS(p, dest_cpu),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( int, prio )
|
|
__field( int, orig_cpu )
|
|
__field( int, dest_cpu )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
|
|
__entry->pid = p->pid;
|
|
__entry->prio = p->prio;
|
|
__entry->orig_cpu = task_cpu(p);
|
|
__entry->dest_cpu = dest_cpu;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
|
|
__entry->comm, __entry->pid, __entry->prio,
|
|
__entry->orig_cpu, __entry->dest_cpu)
|
|
);
|
|
|
|
DECLARE_EVENT_CLASS(sched_process_template,
|
|
|
|
TP_PROTO(struct task_struct *p),
|
|
|
|
TP_ARGS(p),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( int, prio )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
|
|
__entry->pid = p->pid;
|
|
__entry->prio = p->prio;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d prio=%d",
|
|
__entry->comm, __entry->pid, __entry->prio)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for freeing a task:
|
|
*/
|
|
DEFINE_EVENT(sched_process_template, sched_process_free,
|
|
TP_PROTO(struct task_struct *p),
|
|
TP_ARGS(p));
|
|
|
|
|
|
/*
|
|
* Tracepoint for a task exiting:
|
|
*/
|
|
DEFINE_EVENT(sched_process_template, sched_process_exit,
|
|
TP_PROTO(struct task_struct *p),
|
|
TP_ARGS(p));
|
|
|
|
/*
|
|
* Tracepoint for waiting on task to unschedule:
|
|
*/
|
|
DEFINE_EVENT(sched_process_template, sched_wait_task,
|
|
TP_PROTO(struct task_struct *p),
|
|
TP_ARGS(p));
|
|
|
|
/*
|
|
* Tracepoint for a waiting task:
|
|
*/
|
|
TRACE_EVENT(sched_process_wait,
|
|
|
|
TP_PROTO(struct pid *pid),
|
|
|
|
TP_ARGS(pid),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( int, prio )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
__entry->pid = pid_nr(pid);
|
|
__entry->prio = current->prio;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d prio=%d",
|
|
__entry->comm, __entry->pid, __entry->prio)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for do_fork:
|
|
*/
|
|
TRACE_EVENT(sched_process_fork,
|
|
|
|
TP_PROTO(struct task_struct *parent, struct task_struct *child),
|
|
|
|
TP_ARGS(parent, child),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, parent_comm, TASK_COMM_LEN )
|
|
__field( pid_t, parent_pid )
|
|
__array( char, child_comm, TASK_COMM_LEN )
|
|
__field( pid_t, child_pid )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
|
|
__entry->parent_pid = parent->pid;
|
|
memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
|
|
__entry->child_pid = child->pid;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
|
|
__entry->parent_comm, __entry->parent_pid,
|
|
__entry->child_comm, __entry->child_pid)
|
|
);
|
|
|
|
/*
|
|
* XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
|
|
* adding sched_stat support to SCHED_FIFO/RR would be welcome.
|
|
*/
|
|
DECLARE_EVENT_CLASS(sched_stat_template,
|
|
|
|
TP_PROTO(struct task_struct *tsk, u64 delay),
|
|
|
|
TP_ARGS(tsk, delay),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( u64, delay )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
|
|
__entry->pid = tsk->pid;
|
|
__entry->delay = delay;
|
|
)
|
|
TP_perf_assign(
|
|
__perf_count(delay);
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d delay=%Lu [ns]",
|
|
__entry->comm, __entry->pid,
|
|
(unsigned long long)__entry->delay)
|
|
);
|
|
|
|
|
|
/*
|
|
* Tracepoint for accounting wait time (time the task is runnable
|
|
* but not actually running due to scheduler contention).
|
|
*/
|
|
DEFINE_EVENT(sched_stat_template, sched_stat_wait,
|
|
TP_PROTO(struct task_struct *tsk, u64 delay),
|
|
TP_ARGS(tsk, delay));
|
|
|
|
/*
|
|
* Tracepoint for accounting sleep time (time the task is not runnable,
|
|
* including iowait, see below).
|
|
*/
|
|
DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
|
|
TP_PROTO(struct task_struct *tsk, u64 delay),
|
|
TP_ARGS(tsk, delay));
|
|
|
|
/*
|
|
* Tracepoint for accounting iowait time (time the task is not runnable
|
|
* due to waiting on IO to complete).
|
|
*/
|
|
DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
|
|
TP_PROTO(struct task_struct *tsk, u64 delay),
|
|
TP_ARGS(tsk, delay));
|
|
|
|
/*
|
|
* Tracepoint for accounting blocked time (time the task is in uninterruptible).
|
|
*/
|
|
DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
|
|
TP_PROTO(struct task_struct *tsk, u64 delay),
|
|
TP_ARGS(tsk, delay));
|
|
|
|
/*
|
|
* Tracepoint for accounting runtime (time the task is executing
|
|
* on a CPU).
|
|
*/
|
|
TRACE_EVENT(sched_stat_runtime,
|
|
|
|
TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
|
|
|
|
TP_ARGS(tsk, runtime, vruntime),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( u64, runtime )
|
|
__field( u64, vruntime )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
|
|
__entry->pid = tsk->pid;
|
|
__entry->runtime = runtime;
|
|
__entry->vruntime = vruntime;
|
|
)
|
|
TP_perf_assign(
|
|
__perf_count(runtime);
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
|
|
__entry->comm, __entry->pid,
|
|
(unsigned long long)__entry->runtime,
|
|
(unsigned long long)__entry->vruntime)
|
|
);
|
|
|
|
#ifdef CREATE_TRACE_POINTS
|
|
static inline u64 trace_get_sleeptime(struct task_struct *tsk)
|
|
{
|
|
#ifdef CONFIG_SCHEDSTATS
|
|
u64 block, sleep;
|
|
|
|
block = tsk->se.statistics.block_start;
|
|
sleep = tsk->se.statistics.sleep_start;
|
|
tsk->se.statistics.block_start = 0;
|
|
tsk->se.statistics.sleep_start = 0;
|
|
|
|
return block ? block : sleep ? sleep : 0;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Tracepoint for accounting sleeptime (time the task is sleeping
|
|
* or waiting for I/O).
|
|
*/
|
|
TRACE_EVENT(sched_stat_sleeptime,
|
|
|
|
TP_PROTO(struct task_struct *tsk, u64 now),
|
|
|
|
TP_ARGS(tsk, now),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( u64, sleeptime )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
|
|
__entry->pid = tsk->pid;
|
|
__entry->sleeptime = trace_get_sleeptime(tsk);
|
|
__entry->sleeptime = __entry->sleeptime ?
|
|
now - __entry->sleeptime : 0;
|
|
)
|
|
TP_perf_assign(
|
|
__perf_count(__entry->sleeptime);
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d sleeptime=%Lu [ns]",
|
|
__entry->comm, __entry->pid,
|
|
(unsigned long long)__entry->sleeptime)
|
|
);
|
|
|
|
/*
|
|
* Tracepoint for showing priority inheritance modifying a tasks
|
|
* priority.
|
|
*/
|
|
TRACE_EVENT(sched_pi_setprio,
|
|
|
|
TP_PROTO(struct task_struct *tsk, int newprio),
|
|
|
|
TP_ARGS(tsk, newprio),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__field( pid_t, pid )
|
|
__field( int, oldprio )
|
|
__field( int, newprio )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
|
|
__entry->pid = tsk->pid;
|
|
__entry->oldprio = tsk->prio;
|
|
__entry->newprio = newprio;
|
|
),
|
|
|
|
TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
|
|
__entry->comm, __entry->pid,
|
|
__entry->oldprio, __entry->newprio)
|
|
);
|
|
|
|
#endif /* _TRACE_SCHED_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|