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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-06-27 13:41:33 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-27 14:31:44 +0200 |
| commit | 93b75217df39e6d75889cc6f8050343286aff4a5 (patch) | |
| tree | d3091afd2b88aa9732ff63b3a839bdec358aef7d | |
| parent | cb5ef42a03a13f95a9ea94e6cda4f7a47497871f (diff) | |
| download | op-kernel-dev-93b75217df39e6d75889cc6f8050343286aff4a5.zip op-kernel-dev-93b75217df39e6d75889cc6f8050343286aff4a5.tar.gz | |
sched: disable source/target_load bias
The bias given by source/target_load functions can be very large, disable
it by default to get faster convergence.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/sched.c | 4 | ||||
| -rw-r--r-- | kernel/sched_features.h | 1 |
2 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 10d43f5..6c5eb3b 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2000,7 +2000,7 @@ static unsigned long source_load(int cpu, int type) struct rq *rq = cpu_rq(cpu); unsigned long total = weighted_cpuload(cpu); - if (type == 0) + if (type == 0 || !sched_feat(LB_BIAS)) return total; return min(rq->cpu_load[type-1], total); @@ -2015,7 +2015,7 @@ static unsigned long target_load(int cpu, int type) struct rq *rq = cpu_rq(cpu); unsigned long total = weighted_cpuload(cpu); - if (type == 0) + if (type == 0 || !sched_feat(LB_BIAS)) return total; return max(rq->cpu_load[type-1], total); diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 04123af..d56e305 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -8,3 +8,4 @@ SCHED_FEAT(SYNC_WAKEUPS, 1) SCHED_FEAT(HRTICK, 1) SCHED_FEAT(DOUBLE_TICK, 0) SCHED_FEAT(ASYM_GRAN, 1) +SCHED_FEAT(LB_BIAS, 0)
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