[tip: sched/core] sched/fair: Mark tg_is_idle() an inline in the !CONFIG_FAIR_GROUP_SCHED case

[tip-bot2 for Ingo Molnar]

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     366e7ad6ba5f4cb2ffd0b7316e404d6ee9c0f401
Gitweb:        https://git.kernel.org/tip/366e7ad6ba5f4cb2ffd0b7316e404d6ee9c0f401
Author:        Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate:    Thu, 26 Aug 2021 10:47:09 +02:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Thu, 26 Aug 2021 10:49:24 +02:00

sched/fair: Mark tg_is_idle() an inline in the !CONFIG_FAIR_GROUP_SCHED case

It's not actually used in the !CONFIG_FAIR_GROUP_SCHED case:

  kernel/sched/fair.c:488:12: warning: ‘tg_is_idle’ defined but not used [-Wunused-function]

Keep around a placeholder nevertheless, for API completeness. Mark it inline,
so the compiler doesn't think it must be used.

Fixes: 304000390f88: ("sched: Cgroup SCHED_IDLE support")
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Josh Don <joshdon@xxxxxxxxxx>
Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6cd05f1..7b3e859 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -485,7 +485,7 @@ find_matching_se(struct sched_entity **se, struct sched_entity **pse)
 {
 }
 
-static int tg_is_idle(struct task_group *tg)
+static inline int tg_is_idle(struct task_group *tg)
 {
 	return 0;
 }