diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-04-14 08:53:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-19 19:44:57 +0200 |
| commit | 018d6db4cb5bbdcd65424a16f2dcca692ed32ae4 (patch) | |
| tree | aee5a5ae44ba3f345c26acf91d419dae1ba6d1e1 | |
| parent | 3925e6fc1f774048404fdd910b0345b06c699eb4 (diff) | |
sched: re-do "sched: fix fair sleepers"
re-apply:
| commit e22ecef1d2658ba54ed7d3fdb5d60829fb434c23
| Author: Ingo Molnar <mingo@elte.hu>
| Date: Fri Mar 14 22:16:08 2008 +0100
|
| sched: fix fair sleepers
|
| Fair sleepers need to scale their latency target down by runqueue
| weight. Otherwise busy systems will gain ever larger sleep bonus.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/sched_fair.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 0080968d3e4a..86a93376282c 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -510,8 +510,10 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) if (!initial) { /* sleeps upto a single latency don't count. */ - if (sched_feat(NEW_FAIR_SLEEPERS)) - vruntime -= sysctl_sched_latency; + if (sched_feat(NEW_FAIR_SLEEPERS)) { + vruntime -= calc_delta_fair(sysctl_sched_latency, + &cfs_rq->load); + } /* ensure we never gain time by being placed backwards. */ vruntime = max_vruntime(se->vruntime, vruntime); |