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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-03-21 16:43:47 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-21 16:43:47 +0100 |
| commit | 2070ee01d314ecec8a570c07647ccf4ced6340bb (patch) | |
| tree | e7a3c95e9c8ae06917e00a40fcb6cae1c4a9c924 | |
| parent | ae51801ba5ca27c2c571eb508daa99b392e79bd4 (diff) | |
| download | lwn-2070ee01d314ecec8a570c07647ccf4ced6340bb.tar.gz lwn-2070ee01d314ecec8a570c07647ccf4ced6340bb.zip | |
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.c | 8 | ||||
| -rw-r--r-- | kernel/sched_fair.c | 14 |
2 files changed, 2 insertions, 20 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 3f7c5eb254e2..366a90923a3b 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 b85cac4b5e25..86a93376282c 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 |