Commit-ID: 9942f79baaaf111d63ebf0862a819278d84fccc4
Gitweb: http://git.kernel.org/tip/9942f79baaaf111d63ebf0862a819278d84fccc4
Author: Rik van Riel <riel@xxxxxxxxxx>
AuthorDate: Fri, 17 Oct 2014 03:29:49 -0400
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 28 Oct 2014 10:47:47 +0100
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@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: mgorman@xxxxxxx
Cc: chegu_vinod@xxxxxx
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1413530994-9732-2-git-send-email-riel@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
kernel/sched/core.c | 4 +++-
kernel/sched/sched.h | 5 +++++
2 files changed, 8 insertions(+), 1 deletion(-)
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);
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|