Messages in this thread Patch in this message | | | Subject | Re: [patch 7/12] sched: remove NORMALIZED_SLEEPER | From | Mike Galbraith <> | Date | Thu, 11 Mar 2010 10:57:27 +0100 |
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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> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission>
--- kernel/sched_fair.c | 10 ---------- kernel/sched_features.h | 7 ------- 2 files changed, 17 deletions(-)
Index: linux-2.6/kernel/sched_fair.c =================================================================== --- linux-2.6.orig/kernel/sched_fair.c +++ linux-2.6/kernel/sched_fair.c @@ -741,16 +741,6 @@ place_entity(struct cfs_rq *cfs_rq, stru 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: */ Index: linux-2.6/kernel/sched_features.h =================================================================== --- linux-2.6.orig/kernel/sched_features.h +++ linux-2.6/kernel/sched_features.h @@ -13,13 +13,6 @@ 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 */
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