diff options
author | Linux Build Service Account <lnxbuild@localhost> | 2016-12-19 17:04:55 -0800 |
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committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-12-19 17:04:55 -0800 |
commit | 5a66e9b789aaaf58fa9ef91d83dd0e509f0eb624 (patch) | |
tree | c10a62794297c2b3adf542d819f6642bc50b3ba0 | |
parent | e26b0777dc92ab47d16b0134e57cd1c9e1083a9a (diff) | |
parent | 92dc28458ccc3ab3aff715c77c744d0bdebd7506 (diff) |
Merge "sched: Track average sleep time"
-rw-r--r-- | include/linux/sched.h | 2 | ||||
-rw-r--r-- | include/trace/events/sched.h | 7 | ||||
-rw-r--r-- | kernel/sched/core.c | 4 | ||||
-rw-r--r-- | kernel/sched/hmp.c | 14 | ||||
-rw-r--r-- | kernel/sched/sched.h | 4 |
5 files changed, 19 insertions, 12 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index c58ba6c22caf..36007d90a678 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1395,7 +1395,7 @@ struct ravg { u32 sum_history[RAVG_HIST_SIZE_MAX]; u32 *curr_window_cpu, *prev_window_cpu; u32 curr_window, prev_window; - u64 curr_burst, avg_burst; + u64 curr_burst, avg_burst, avg_sleep_time; u16 active_windows; u32 pred_demand; u8 busy_buckets[NUM_BUSY_BUCKETS]; diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index 501ca9874456..0a59832e0515 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -135,6 +135,7 @@ TRACE_EVENT(sched_task_load, __field( u64, latency ) __field( int, grp_id ) __field( u64, avg_burst ) + __field( u64, avg_sleep ) ), TP_fast_assign( @@ -152,13 +153,15 @@ TRACE_EVENT(sched_task_load, p->ravg.mark_start : 0; __entry->grp_id = p->grp ? p->grp->id : 0; __entry->avg_burst = p->ravg.avg_burst; + __entry->avg_sleep = p->ravg.avg_sleep_time; ), - TP_printk("%d (%s): demand=%u boost=%d reason=%d sync=%d need_idle=%d flags=%x grp=%d best_cpu=%d latency=%llu avg_burst=%llu", + TP_printk("%d (%s): demand=%u boost=%d reason=%d sync=%d need_idle=%d flags=%x grp=%d best_cpu=%d latency=%llu avg_burst=%llu avg_sleep=%llu", __entry->pid, __entry->comm, __entry->demand, __entry->boost, __entry->reason, __entry->sync, __entry->need_idle, __entry->flags, __entry->grp_id, - __entry->best_cpu, __entry->latency, __entry->avg_burst) + __entry->best_cpu, __entry->latency, __entry->avg_burst, + __entry->avg_sleep) ); TRACE_EVENT(sched_set_preferred_cluster, diff --git a/kernel/sched/core.c b/kernel/sched/core.c index ca577a09ce5e..b70a76058b00 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2115,7 +2115,7 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) set_task_cpu(p, cpu); } - set_task_last_wake(p, wallclock); + note_task_waking(p, wallclock); #endif /* CONFIG_SMP */ ttwu_queue(p, cpu); stat: @@ -2184,7 +2184,7 @@ static void try_to_wake_up_local(struct task_struct *p) update_task_ravg(rq->curr, rq, TASK_UPDATE, wallclock, 0); update_task_ravg(p, rq, TASK_WAKE, wallclock, 0); ttwu_activate(rq, p, ENQUEUE_WAKEUP); - set_task_last_wake(p, wallclock); + note_task_waking(p, wallclock); } ttwu_do_wakeup(rq, p, 0); diff --git a/kernel/sched/hmp.c b/kernel/sched/hmp.c index 95e618ee1124..158fc748873b 100644 --- a/kernel/sched/hmp.c +++ b/kernel/sched/hmp.c @@ -74,11 +74,6 @@ inline void clear_ed_task(struct task_struct *p, struct rq *rq) rq->ed_task = NULL; } -inline void set_task_last_wake(struct task_struct *p, u64 wallclock) -{ - p->last_wake_ts = wallclock; -} - inline void set_task_last_switch_out(struct task_struct *p, u64 wallclock) { p->last_switch_out_ts = wallclock; @@ -1567,6 +1562,7 @@ void init_new_task_load(struct task_struct *p, bool idle_task) * the avg_burst to go below the threshold. */ p->ravg.avg_burst = 2 * (u64)sysctl_sched_short_burst; + p->ravg.avg_sleep_time = 0; p->ravg.curr_window_cpu = kcalloc(nr_cpu_ids, sizeof(u32), GFP_KERNEL); p->ravg.prev_window_cpu = kcalloc(nr_cpu_ids, sizeof(u32), GFP_KERNEL); @@ -4510,6 +4506,14 @@ void update_avg_burst(struct task_struct *p) p->ravg.curr_burst = 0; } +void note_task_waking(struct task_struct *p, u64 wallclock) +{ + u64 sleep_time = wallclock - p->last_switch_out_ts; + + p->last_wake_ts = wallclock; + update_avg(&p->ravg.avg_sleep_time, sleep_time); +} + #ifdef CONFIG_CGROUP_SCHED u64 cpu_upmigrate_discourage_read_u64(struct cgroup_subsys_state *css, struct cftype *cft) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index ae7442007e8b..5f23462f3a60 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1120,7 +1120,7 @@ extern void mark_task_starting(struct task_struct *p); extern void set_window_start(struct rq *rq); extern void migrate_sync_cpu(int cpu, int new_cpu); extern void update_cluster_topology(void); -extern void set_task_last_wake(struct task_struct *p, u64 wallclock); +extern void note_task_waking(struct task_struct *p, u64 wallclock); extern void set_task_last_switch_out(struct task_struct *p, u64 wallclock); extern void init_clusters(void); extern int __init set_sched_enable_hmp(char *str); @@ -1518,7 +1518,7 @@ static inline void set_window_start(struct rq *rq) { } static inline void migrate_sync_cpu(int cpu, int new_cpu) {} static inline void init_clusters(void) {} static inline void update_cluster_topology(void) { } -static inline void set_task_last_wake(struct task_struct *p, u64 wallclock) { } +static inline void note_task_waking(struct task_struct *p, u64 wallclock) { } static inline void set_task_last_switch_out(struct task_struct *p, u64 wallclock) { } |