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| author | Tejun Heo <tj@kernel.org> | 2009-12-08 10:02:12 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-12-08 10:02:12 +0900 |
| commit | 50de1a8ef18da0cfff97543315b4e042e8bb7c83 (patch) | |
| tree | 86056d1aef0e83d7839a8350c9e6109b80b3cfa5 /kernel/sched.c | |
| parent | 390dfd95c5df1ab3921dd388d11b2aee332c3f2c (diff) | |
| parent | ee0a6efc1897ef817e177e669f5c5d211194df24 (diff) | |
| download | blackbird-op-linux-50de1a8ef18da0cfff97543315b4e042e8bb7c83.tar.gz blackbird-op-linux-50de1a8ef18da0cfff97543315b4e042e8bb7c83.zip | |
Merge branch 'for-linus' into for-next
Conflicts:
mm/percpu.c
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 854ab418fd42..eecf070ffd1a 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -1563,11 +1563,7 @@ static unsigned long cpu_avg_load_per_task(int cpu) #ifdef CONFIG_FAIR_GROUP_SCHED -struct update_shares_data { - unsigned long rq_weight[NR_CPUS]; -}; - -static DEFINE_PER_CPU(struct update_shares_data, update_shares_data); +static __read_mostly unsigned long *update_shares_data; static void __set_se_shares(struct sched_entity *se, unsigned long shares); @@ -1577,12 +1573,12 @@ static void __set_se_shares(struct sched_entity *se, unsigned long shares); static void update_group_shares_cpu(struct task_group *tg, int cpu, unsigned long sd_shares, unsigned long sd_rq_weight, - struct update_shares_data *usd) + unsigned long *usd_rq_weight) { unsigned long shares, rq_weight; int boost = 0; - rq_weight = usd->rq_weight[cpu]; + rq_weight = usd_rq_weight[cpu]; if (!rq_weight) { boost = 1; rq_weight = NICE_0_LOAD; @@ -1617,7 +1613,7 @@ static void update_group_shares_cpu(struct task_group *tg, int cpu, static int tg_shares_up(struct task_group *tg, void *data) { unsigned long weight, rq_weight = 0, shares = 0; - struct update_shares_data *usd; + unsigned long *usd_rq_weight; struct sched_domain *sd = data; unsigned long flags; int i; @@ -1626,11 +1622,11 @@ static int tg_shares_up(struct task_group *tg, void *data) return 0; local_irq_save(flags); - usd = &__get_cpu_var(update_shares_data); + usd_rq_weight = per_cpu_ptr(update_shares_data, smp_processor_id()); for_each_cpu(i, sched_domain_span(sd)) { weight = tg->cfs_rq[i]->load.weight; - usd->rq_weight[i] = weight; + usd_rq_weight[i] = weight; /* * If there are currently no tasks on the cpu pretend there @@ -1651,7 +1647,7 @@ static int tg_shares_up(struct task_group *tg, void *data) shares = tg->shares; for_each_cpu(i, sched_domain_span(sd)) - update_group_shares_cpu(tg, i, shares, rq_weight, usd); + update_group_shares_cpu(tg, i, shares, rq_weight, usd_rq_weight); local_irq_restore(flags); @@ -9406,6 +9402,10 @@ void __init sched_init(void) #endif /* CONFIG_USER_SCHED */ #endif /* CONFIG_GROUP_SCHED */ +#if defined CONFIG_FAIR_GROUP_SCHED && defined CONFIG_SMP + update_shares_data = __alloc_percpu(nr_cpu_ids * sizeof(unsigned long), + __alignof__(unsigned long)); +#endif for_each_possible_cpu(i) { struct rq *rq; |
