Revert "sched/fair: Record the average duration of a task"

This reverts commit d2d5de1.
xanmod · Oct 10, 2023 · 00ca249 · 00ca249
1 parent 39e8c03
commit 00ca249
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Showing 4 changed files with 0 additions and 19 deletions.
diff --git a/include/linux/sched.h b/include/linux/sched.h
@@ -557,9 +557,6 @@ struct sched_entity {
 	u64				prev_sum_exec_runtime;
 
 	u64				nr_migrations;
-	u64				prev_sleep_sum_runtime;
-	/* average duration of a task */
-	u64				dur_avg;
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	int				depth;

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
@@ -4388,8 +4388,6 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p)
 	p->se.prev_sum_exec_runtime	= 0;
 	p->se.nr_migrations		= 0;
 	p->se.vruntime			= 0;
-	p->se.dur_avg			= 0;
-	p->se.prev_sleep_sum_runtime	= 0;
 	INIT_LIST_HEAD(&p->se.group_node);
 
 #ifdef CONFIG_FAIR_GROUP_SCHED

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
@@ -1024,7 +1024,6 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns,
 	__PS("nr_involuntary_switches", p->nivcsw);
 
 	P(se.load.weight);
-	P(se.dur_avg);
 #ifdef CONFIG_SMP
 	P(se.avg.load_sum);
 	P(se.avg.runnable_sum);

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
@@ -6176,18 +6176,6 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 
 static void set_next_buddy(struct sched_entity *se);
 
-static inline void dur_avg_update(struct task_struct *p, bool task_sleep)
-{
-	u64 dur;
-
-	if (!task_sleep)
-		return;
-
-	dur = p->se.sum_exec_runtime - p->se.prev_sleep_sum_runtime;
-	p->se.prev_sleep_sum_runtime = p->se.sum_exec_runtime;
-	update_avg(&p->se.dur_avg, dur);
-}
-
 /*
  * The dequeue_task method is called before nr_running is
  * decreased. We remove the task from the rbtree and
@@ -6260,7 +6248,6 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 
 dequeue_throttle:
 	util_est_update(&rq->cfs, p, task_sleep);
-	dur_avg_update(p, task_sleep);
 	hrtick_update(rq);
 }