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| author | Rik van Riel <riel@redhat.com> | 2014-10-17 03:29:49 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-10-28 10:47:47 +0100 |
| commit | 9942f79baaaf111d63ebf0862a819278d84fccc4 (patch) | |
| tree | e84cd77db609abff116f09911eba9be92610eacd /kernel/sched | |
| parent | f3a7e1a9c464a32ee186ab91388313c82e7ce018 (diff) | |
| download | op-kernel-dev-9942f79baaaf111d63ebf0862a819278d84fccc4.zip op-kernel-dev-9942f79baaaf111d63ebf0862a819278d84fccc4.tar.gz | |
sched/numa: Export info needed for NUMA balancing on complex topologies
Export some information that is necessary to do placement of
tasks on systems with multi-level NUMA topologies.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: mgorman@suse.de
Cc: chegu_vinod@hp.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1413530994-9732-2-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 4 | ||||
| -rw-r--r-- | kernel/sched/sched.h | 5 |
2 files changed, 8 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 240157c..4007595 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6129,6 +6129,7 @@ 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 @@ -6300,7 +6301,7 @@ 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; @@ -6447,6 +6448,7 @@ 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 24156c84..443d6e1 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -678,6 +678,11 @@ static inline u64 rq_clock_task(struct rq *rq) return rq->clock_task; } +#ifdef CONFIG_NUMA +extern int sched_max_numa_distance; +extern bool find_numa_distance(int distance); +#endif + #ifdef CONFIG_NUMA_BALANCING extern void sched_setnuma(struct task_struct *p, int node); extern int migrate_task_to(struct task_struct *p, int cpu); |
