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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-03-21 16:43:47 +0100
committerIngo Molnar <mingo@elte.hu>2008-03-21 16:43:47 +0100
commit2070ee01d314ecec8a570c07647ccf4ced6340bb (patch)
treee7a3c95e9c8ae06917e00a40fcb6cae1c4a9c924
parentae51801ba5ca27c2c571eb508daa99b392e79bd4 (diff)
sched: cleanup old and rarely used 'debug' features.
TREE_AVG and APPROX_AVG are initial task placement policies that have been disabled for a long while.. time to remove them. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/sched.c8
-rw-r--r--kernel/sched_fair.c14
2 files changed, 2 insertions, 20 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 3f7c5eb254e..366a90923a3 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -594,18 +594,14 @@ enum {
SCHED_FEAT_NEW_FAIR_SLEEPERS = 1,
SCHED_FEAT_WAKEUP_PREEMPT = 2,
SCHED_FEAT_START_DEBIT = 4,
- SCHED_FEAT_TREE_AVG = 8,
- SCHED_FEAT_APPROX_AVG = 16,
- SCHED_FEAT_HRTICK = 32,
- SCHED_FEAT_DOUBLE_TICK = 64,
+ SCHED_FEAT_HRTICK = 8,
+ SCHED_FEAT_DOUBLE_TICK = 16,
};
const_debug unsigned int sysctl_sched_features =
SCHED_FEAT_NEW_FAIR_SLEEPERS * 1 |
SCHED_FEAT_WAKEUP_PREEMPT * 1 |
SCHED_FEAT_START_DEBIT * 1 |
- SCHED_FEAT_TREE_AVG * 0 |
- SCHED_FEAT_APPROX_AVG * 0 |
SCHED_FEAT_HRTICK * 1 |
SCHED_FEAT_DOUBLE_TICK * 0;
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index b85cac4b5e2..86a93376282 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -302,11 +302,6 @@ static u64 __sched_vslice(unsigned long rq_weight, unsigned long nr_running)
return vslice;
}
-static u64 sched_vslice(struct cfs_rq *cfs_rq)
-{
- return __sched_vslice(cfs_rq->load.weight, cfs_rq->nr_running);
-}
-
static u64 sched_vslice_add(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
return __sched_vslice(cfs_rq->load.weight + se->load.weight,
@@ -504,15 +499,6 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
} else
vruntime = cfs_rq->min_vruntime;
- if (sched_feat(TREE_AVG)) {
- struct sched_entity *last = __pick_last_entity(cfs_rq);
- if (last) {
- vruntime += last->vruntime;
- vruntime >>= 1;
- }
- } else if (sched_feat(APPROX_AVG) && cfs_rq->nr_running)
- vruntime += sched_vslice(cfs_rq)/2;
-
/*
* The 'current' period is already promised to the current tasks,
* however the extra weight of the new task will slow them down a