diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-06-27 07:41:33 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-27 08:31:44 -0400 |
| commit | 93b75217df39e6d75889cc6f8050343286aff4a5 (patch) | |
| tree | d3091afd2b88aa9732ff63b3a839bdec358aef7d /kernel | |
| parent | cb5ef42a03a13f95a9ea94e6cda4f7a47497871f (diff) | |
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>
Diffstat (limited to 'kernel')
| -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 10d43f5bf0fc..6c5eb3bc37e0 100644 --- a/kernel/sched.c +++ b/kernel/sched.c | |||
| @@ -2000,7 +2000,7 @@ static unsigned long source_load(int cpu, int type) | |||
| 2000 | struct rq *rq = cpu_rq(cpu); | 2000 | struct rq *rq = cpu_rq(cpu); |
| 2001 | unsigned long total = weighted_cpuload(cpu); | 2001 | unsigned long total = weighted_cpuload(cpu); |
| 2002 | 2002 | ||
| 2003 | if (type == 0) | 2003 | if (type == 0 || !sched_feat(LB_BIAS)) |
| 2004 | return total; | 2004 | return total; |
| 2005 | 2005 | ||
| 2006 | return min(rq->cpu_load[type-1], total); | 2006 | return min(rq->cpu_load[type-1], total); |
| @@ -2015,7 +2015,7 @@ static unsigned long target_load(int cpu, int type) | |||
| 2015 | struct rq *rq = cpu_rq(cpu); | 2015 | struct rq *rq = cpu_rq(cpu); |
| 2016 | unsigned long total = weighted_cpuload(cpu); | 2016 | unsigned long total = weighted_cpuload(cpu); |
| 2017 | 2017 | ||
| 2018 | if (type == 0) | 2018 | if (type == 0 || !sched_feat(LB_BIAS)) |
| 2019 | return total; | 2019 | return total; |
| 2020 | 2020 | ||
| 2021 | return max(rq->cpu_load[type-1], total); | 2021 | return max(rq->cpu_load[type-1], total); |
diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 04123af2e678..d56e3053e746 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h | |||
| @@ -8,3 +8,4 @@ SCHED_FEAT(SYNC_WAKEUPS, 1) | |||
| 8 | SCHED_FEAT(HRTICK, 1) | 8 | SCHED_FEAT(HRTICK, 1) |
| 9 | SCHED_FEAT(DOUBLE_TICK, 0) | 9 | SCHED_FEAT(DOUBLE_TICK, 0) |
| 10 | SCHED_FEAT(ASYM_GRAN, 1) | 10 | SCHED_FEAT(ASYM_GRAN, 1) |
| 11 | SCHED_FEAT(LB_BIAS, 0) \ No newline at end of file | ||