diff mbox

[RFC,2/7] sched: cfs: declare capacity_of in sched.h

Message ID 1413958051-7103-3-git-send-email-mturquette@linaro.org
State New
Headers show

Commit Message

Mike Turquette Oct. 22, 2014, 6:07 a.m. UTC 
capacity_of is useful for cpu frequency scaling policies. Share it via
sched.h so that selectable cpu frequency scaling policies can make use
of it.

Signed-off-by: Mike Turquette <mturquette@linaro.org>
---
 kernel/sched/fair.c  | 7 +++++--
 kernel/sched/sched.h | 2 ++
 2 files changed, 7 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 90b36cc..15f5638 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1018,7 +1018,6 @@  bool should_numa_migrate_memory(struct task_struct *p, struct page * page,
 static unsigned long weighted_cpuload(const int cpu);
 static unsigned long source_load(int cpu, int type);
 static unsigned long target_load(int cpu, int type);
-static unsigned long capacity_of(int cpu);
 static long effective_load(struct task_group *tg, int cpu, long wl, long wg);
 
 /* Cached statistics for all CPUs within a node */
@@ -2056,6 +2055,10 @@  static inline void account_numa_dequeue(struct rq *rq, struct task_struct *p)
 }
 #endif /* CONFIG_NUMA_BALANCING */
 
+#ifdef CONFIG_SMP
+unsigned long capacity_of(int cpu);
+#endif /* CONFIG_SMP */
+
 static void
 account_entity_enqueue(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
@@ -4132,7 +4135,7 @@  static unsigned long target_load(int cpu, int type)
 	return max(rq->cpu_load[type-1], total);
 }
 
-static unsigned long capacity_of(int cpu)
+unsigned long capacity_of(int cpu)
 {
 	return cpu_rq(cpu)->cpu_capacity;
 }
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 04940f8..9a28d38 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -309,6 +309,8 @@  struct cfs_bandwidth { };
 
 #endif	/* CONFIG_CGROUP_SCHED */
 
+extern unsigned long capacity_of(int cpu);
+
 /* CFS-related fields in a runqueue */
 struct cfs_rq {
 	struct load_weight load;