sched: undo some of the recent changes

undo some of the recent changes that are not needed after all,
such as last_min_vruntime.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

kernel/sched_fair.c

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 0228de1..62a9ee8d 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -480,14 +480,9 @@
 		vruntime += __sched_vslice(cfs_rq->nr_running + 1);
 
 	if (!initial) {
-		if (sched_feat(NEW_FAIR_SLEEPERS)) {
-			s64 latency = cfs_rq->min_vruntime - se->vruntime;
-			if (latency < 0 || !cfs_rq->nr_running)
-				latency = 0;
-			else
-				latency = min_t(s64, latency, sysctl_sched_latency);
-			vruntime -= latency;
-		}
+		if (sched_feat(NEW_FAIR_SLEEPERS))
+			vruntime -= sysctl_sched_latency;
+
 		vruntime = max(vruntime, se->vruntime);
 	}
 
@@ -531,8 +526,6 @@
 				se->block_start = rq_of(cfs_rq)->clock;
 		}
 #endif
-		/* se->vruntime = entity_key(cfs_rq, se); */
-		se->last_min_vruntime = cfs_rq->min_vruntime;
 	}
 
 	if (se != cfs_rq->curr)