[PATCH v8 2/3] sched: Make raw_spin_rq_unlock() inline

[Xie Yuanbin <qq570070308@gmail.com>]

raw_spin_rq_unlock() is short, and is called in some hot code paths
such as finish_lock_switch.

Make raw_spin_rq_unlock() inline to optimize performance.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: David Hildenbrand (Arm) <david@kernel.org>
Cc: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xie Yuanbin <qq570070308@gmail.com>
---
 kernel/sched/core.c  | 5 -----
 kernel/sched/sched.h | 9 ++++++---
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index bfd280ec0f97..b59bab255e57 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -687,11 +687,6 @@ bool raw_spin_rq_trylock(struct rq *rq)
 	}
 }
 
-void raw_spin_rq_unlock(struct rq *rq)
-{
-	raw_spin_unlock(rq_lockp(rq));
-}
-
 /*
  * double_rq_lock - safely lock two runqueues
  */
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index fa2237e89bee..953d89d71804 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1607,15 +1607,18 @@ extern void raw_spin_rq_lock_nested(struct rq *rq, int subclass)
 extern bool raw_spin_rq_trylock(struct rq *rq)
 	__cond_acquires(true, __rq_lockp(rq));
 
-extern void raw_spin_rq_unlock(struct rq *rq)
-	__releases(__rq_lockp(rq));
-
 static inline void raw_spin_rq_lock(struct rq *rq)
 	__acquires(__rq_lockp(rq))
 {
 	raw_spin_rq_lock_nested(rq, 0);
 }
 
+static inline void raw_spin_rq_unlock(struct rq *rq)
+	__releases(__rq_lockp(rq))
+{
+	raw_spin_unlock(rq_lockp(rq));
+}
+
 static inline void raw_spin_rq_lock_irq(struct rq *rq)
 	__acquires(__rq_lockp(rq))
 {
-- 
2.51.0