diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 5ec685c..fd73e91 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -6822,7 +6822,6 @@ struct sd_data { }; struct s_data { - cpumask_var_t send_covered; struct sched_domain ** __percpu sd; struct sd_data sdd[SD_LV_MAX]; struct root_domain *rd; @@ -6832,7 +6831,6 @@ enum s_alloc { sa_rootdomain, sa_sd, sa_sd_storage, - sa_send_covered, sa_none, }; @@ -6853,6 +6851,8 @@ static int get_group(int cpu, struct sd_data *sdd, struct sched_group **sg) return cpu; } +static cpumask_var_t sched_domains_tmpmask; /* sched_domains_mutex */ + /* * build_sched_groups takes the cpumask we wish to span, and a pointer * to a function which identifies what group(along with sched group) a CPU @@ -6864,13 +6864,17 @@ static int get_group(int cpu, struct sd_data *sdd, struct sched_group **sg) * and ->cpu_power to 0. */ static void -build_sched_groups(struct sched_domain *sd, struct cpumask *covered) +build_sched_groups(struct sched_domain *sd) { struct sched_group *first = NULL, *last = NULL; struct sd_data *sdd = sd->private; const struct cpumask *span = sched_domain_span(sd); + struct cpumask *covered; int i; + lockdep_assert_held(&sched_domains_mutex); + covered = sched_domains_tmpmask; + cpumask_clear(covered); for_each_cpu(i, span) { @@ -7015,8 +7019,6 @@ static void __free_domain_allocs(struct s_data *d, enum s_alloc what, free_percpu(d->sdd[i].sd); free_percpu(d->sdd[i].sg); } /* fall through */ - case sa_send_covered: - free_cpumask_var(d->send_covered); /* fall through */ case sa_none: break; } @@ -7029,8 +7031,6 @@ static enum s_alloc __visit_domain_allocation_hell(struct s_data *d, memset(d, 0, sizeof(*d)); - if (!alloc_cpumask_var(&d->send_covered, GFP_KERNEL)) - return sa_none; for (i = 0; i < SD_LV_MAX; i++) { d->sdd[i].sd = alloc_percpu(struct sched_domain *); if (!d->sdd[i].sd) @@ -7219,7 +7219,7 @@ static int build_sched_domains(const struct cpumask *cpu_map, if (i != cpumask_first(sched_domain_span(sd))) continue; - build_sched_groups(sd, d.send_covered); + build_sched_groups(sd); } } @@ -7896,6 +7896,7 @@ void __init sched_init(void) /* Allocate the nohz_cpu_mask if CONFIG_CPUMASK_OFFSTACK */ zalloc_cpumask_var(&nohz_cpu_mask, GFP_NOWAIT); + zalloc_cpumask_var(&sched_domains_tmpmask, GFP_NOWAIT); #ifdef CONFIG_SMP #ifdef CONFIG_NO_HZ zalloc_cpumask_var(&nohz.idle_cpus_mask, GFP_NOWAIT); |