[tip: sched/core] sched/fair: Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()

From: tip-bot2 for Valentin Schneider
Date: Mon Dec 02 2024 - 06:19:07 EST


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

Commit-ID: a76328d44c7ab7d1001a97cb2e84506dde7822d4
Gitweb: https://git.kernel.org/tip/a76328d44c7ab7d1001a97cb2e84506dde7822d4
Author: Valentin Schneider <vschneid@xxxxxxxxxx>
AuthorDate: Wed, 27 Nov 2024 17:55:01 +01:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Mon, 02 Dec 2024 12:01:31 +01:00

sched/fair: Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()

Andy reported that clang gets upset with CONFIG_CFS_BANDWIDTH=n:

kernel/sched/fair.c:6580:20: error: unused function 'cfs_bandwidth_used' [-Werror,-Wunused-function]
6580 | static inline bool cfs_bandwidth_used(void)
| ^~~~~~~~~~~~~~~~~~

Indeed, cfs_bandwidth_used() is only used within functions defined under
CONFIG_CFS_BANDWIDTH=y. Remove its CONFIG_CFS_BANDWIDTH=n declaration &
definition.

Reported-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Valentin Schneider <vschneid@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Link: https://lore.kernel.org/r/20241127165501.160004-1-vschneid@xxxxxxxxxx
---
kernel/sched/fair.c | 7 -------
1 file changed, 7 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 05b8f1e..4283c81 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5373,8 +5373,6 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
static void check_enqueue_throttle(struct cfs_rq *cfs_rq);
static inline int cfs_rq_throttled(struct cfs_rq *cfs_rq);

-static inline bool cfs_bandwidth_used(void);
-
static void
requeue_delayed_entity(struct sched_entity *se);

@@ -6748,11 +6746,6 @@ static void sched_fair_update_stop_tick(struct rq *rq, struct task_struct *p)

#else /* CONFIG_CFS_BANDWIDTH */

-static inline bool cfs_bandwidth_used(void)
-{
- return false;
-}
-
static void account_cfs_rq_runtime(struct cfs_rq *cfs_rq, u64 delta_exec) {}
static bool check_cfs_rq_runtime(struct cfs_rq *cfs_rq) { return false; }
static void check_enqueue_throttle(struct cfs_rq *cfs_rq) {}