[RFC PATCH 5/9] sched: Define macro for number of CPUs in core

[subhra mazumdar <subhra.mazumdar@oracle.com>]

Introduce macro topology_sibling_weight for number of sibling CPUs in a
core and use in select_idle_cpu

Signed-off-by: subhra mazumdar <subhra.mazumdar@oracle.com>
---
 include/linux/topology.h | 4 ++++
 kernel/sched/fair.c      | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/linux/topology.h b/include/linux/topology.h
index cb0775e..a85aea1 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -190,6 +190,10 @@ static inline int cpu_to_mem(int cpu)
 #ifndef topology_sibling_cpumask
 #define topology_sibling_cpumask(cpu)		cpumask_of(cpu)
 #endif
+#ifndef topology_sibling_weight
+#define topology_sibling_weight(cpu)	\
+		cpumask_weight(topology_sibling_cpumask(cpu))
+#endif
 #ifndef topology_core_cpumask
 #define topology_core_cpumask(cpu)		cpumask_of(cpu)
 #endif
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 23ec9c6..8856503 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6205,7 +6205,7 @@ static int select_idle_cpu(struct task_struct *p, struct sched_domain *sd, int t
 		return -1;
 
 	if (sched_feat(SIS_PROP)) {
-		floor = cpumask_weight(topology_sibling_cpumask(target));
+		floor = topology_sibling_weight(target);
 		if (floor < 2)
 			floor = 2;
 		nr = (p->latency_nice * sd->span_weight) / LATENCY_NICE_MAX;
-- 
2.9.3