AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

sched: Remove NORMALIZED_SLEEPER

Browse Source 
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>
This commit is contained in:
Mike Galbraith 2010-03-11 17:17:17 +01:00 committed by Ingo Molnar
parent 8b911acdf0
commit 6bc6cf2b61
2 changed files with 0 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
kernel/sched_fair.c
View File

@ -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:

7
kernel/sched_features.h
View File

@ -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