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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-28 06:45:04 +1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-28 06:45:04 +1000 |
| commit | bffb276fffc93000e05a19ee0bdee844dff6a88d (patch) | |
| tree | 57e0a6e59f0487e096d362d3150cbba3e536109f /kernel | |
| parent | f7b548fa3d74f0db9af4fd41fbef973231d384fd (diff) | |
| parent | 05ca62c6ca17f39b88fa956d5ebc1fa6e93ad5e3 (diff) | |
| download | linux-bffb276fffc93000e05a19ee0bdee844dff6a88d.tar.bz2 | |
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Use rq->clock_task instead of rq->clock for correctly maintaining load averages
sched: Fix/remove redundant cfs_rq checks
sched: Fix sign under-flows in wake_affine
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched_fair.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 354769979c02..0c26e2df450e 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -722,10 +722,10 @@ static void update_cfs_load(struct cfs_rq *cfs_rq, int global_update) u64 now, delta; unsigned long load = cfs_rq->load.weight; - if (!cfs_rq) + if (cfs_rq->tg == &root_task_group) return; - now = rq_of(cfs_rq)->clock; + now = rq_of(cfs_rq)->clock_task; delta = now - cfs_rq->load_stamp; /* truncate load history at 4 idle periods */ @@ -830,9 +830,6 @@ static void update_cfs_shares(struct cfs_rq *cfs_rq, long weight_delta) struct sched_entity *se; long shares; - if (!cfs_rq) - return; - tg = cfs_rq->tg; se = tg->se[cpu_of(rq_of(cfs_rq))]; if (!se) @@ -1432,7 +1429,7 @@ static inline unsigned long effective_load(struct task_group *tg, int cpu, static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync) { - unsigned long this_load, load; + s64 this_load, load; int idx, this_cpu, prev_cpu; unsigned long tl_per_task; struct task_group *tg; @@ -1471,8 +1468,8 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync) * Otherwise check if either cpus are near enough in load to allow this * task to be woken on this_cpu. */ - if (this_load) { - unsigned long this_eff_load, prev_eff_load; + if (this_load > 0) { + s64 this_eff_load, prev_eff_load; this_eff_load = 100; this_eff_load *= power_of(prev_cpu); |