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Commit 6bc6cf2b authored Mar 11, 2010 by Mike Galbraith Committed by Ingo Molnar Mar 11, 2010

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>

parent 8b911acd

kernel/sched_fair.c

+0 −10

Original line number	Diff line number	Diff line
		@@ -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:

kernel/sched_features.h

+0 −7

Original line number	Diff line number	Diff line
		@@ -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