From: Rik van Riel <[email protected]> Export some information that is necessary to do placement of tasks on systems with multi-level NUMA topologies.
Signed-off-by: Rik van Riel <[email protected]> --- kernel/sched/core.c | 4 +++- kernel/sched/sched.h | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 5a4ad05..ed427f9 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6076,6 +6076,7 @@ static void claim_allocations(int cpu, struct sched_domain *sd) #ifdef CONFIG_NUMA static int sched_domains_numa_levels; static int *sched_domains_numa_distance; +int sched_max_numa_distance; static struct cpumask ***sched_domains_numa_masks; static int sched_domains_curr_level; #endif @@ -6247,7 +6248,7 @@ static void sched_numa_warn(const char *str) printk(KERN_WARNING "\n"); } -static bool find_numa_distance(int distance) +bool find_numa_distance(int distance) { int i; @@ -6394,6 +6395,7 @@ static void sched_init_numa(void) sched_domain_topology = tl; sched_domains_numa_levels = level; + sched_max_numa_distance = sched_domains_numa_distance[level - 1]; } static void sched_domains_numa_masks_set(int cpu) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 6130251..515402e 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -680,6 +680,8 @@ static inline u64 rq_clock_task(struct rq *rq) #ifdef CONFIG_NUMA_BALANCING extern void sched_setnuma(struct task_struct *p, int node); +extern int sched_max_numa_distance; +extern bool find_numa_distance(int distance); extern int migrate_task_to(struct task_struct *p, int cpu); extern int migrate_swap(struct task_struct *, struct task_struct *); #endif /* CONFIG_NUMA_BALANCING */ -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
