sched: Remove NORMALIZED_SLEEPER

This feature hasn't been enabled in a long time, remove effectively dead code.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1268301447.6785.38.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 0008cc4..de98e2e 100644 (file)
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -741,16 +741,6 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
        if (!initial && sched_feat(FAIR_SLEEPERS)) {
                unsigned long thresh = sysctl_sched_latency;
 
-               /*
-                * Convert the sleeper threshold into virtual time.
-                * SCHED_IDLE is a special sub-class.  We care about
-                * fairness only relative to other SCHED_IDLE tasks,
-                * all of which have the same weight.
-                */
-               if (sched_feat(NORMALIZED_SLEEPER) && (!entity_is_task(se) ||
-                                task_of(se)->policy != SCHED_IDLE))
-                       thresh = calc_delta_fair(thresh, se);
-
                /*
                 * Halve their sleep time's effect, to allow
                 * for a gentler effect of sleepers:

diff --git a/kernel/sched_features.h b/kernel/sched_features.h
index c545e04..4042883 100644 (file)
--- a/kernel/sched_features.h
+++ b/kernel/sched_features.h
@@ -12,13 +12,6 @@ SCHED_FEAT(FAIR_SLEEPERS, 1)
  */
 SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1)
 
-/*
- * By not normalizing the sleep time, heavy tasks get an effective
- * longer period, and lighter task an effective shorter period they
- * are considered running.
- */
-SCHED_FEAT(NORMALIZED_SLEEPER, 0)
-
 /*
  * Place new tasks ahead so that they do not starve already running
  * tasks