[PATCH 1/4] sched/fair: Move max_cfs_quota_period decl and default_cfs_period() def from fair.c to sched.h

From: Tejun Heo
Date: Fri Jun 13 2025 - 21:24:13 EST


max_cfs_quota_period is defined in core.c but has a declaration in fair.c.
Move the declaration to kernel/sched/sched.h. Also, move
default_cfs_period() from fair.c to sched.h. No functional changes.

Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
kernel/sched/fair.c | 11 -----------
kernel/sched/sched.h | 13 +++++++++++++
2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6b17d3da034a..707be4570430 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5617,15 +5617,6 @@ void cfs_bandwidth_usage_inc(void) {}
void cfs_bandwidth_usage_dec(void) {}
#endif /* !CONFIG_JUMP_LABEL */

-/*
- * default period for cfs group bandwidth.
- * default: 0.1s, units: nanoseconds
- */
-static inline u64 default_cfs_period(void)
-{
- return 100000000ULL;
-}
-
static inline u64 sched_cfs_bandwidth_slice(void)
{
return (u64)sysctl_sched_cfs_bandwidth_slice * NSEC_PER_USEC;
@@ -6405,8 +6396,6 @@ static enum hrtimer_restart sched_cfs_slack_timer(struct hrtimer *timer)
return HRTIMER_NORESTART;
}

-extern const u64 max_cfs_quota_period;
-
static enum hrtimer_restart sched_cfs_period_timer(struct hrtimer *timer)
{
struct cfs_bandwidth *cfs_b =
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index c323d015486c..e00b80cd998e 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -402,6 +402,19 @@ static inline bool dl_server_active(struct sched_dl_entity *dl_se)

extern struct list_head task_groups;

+#ifdef CONFIG_CFS_BANDWIDTH
+extern const u64 max_cfs_quota_period;
+
+/*
+ * default period for cfs group bandwidth.
+ * default: 0.1s, units: nanoseconds
+ */
+static inline u64 default_cfs_period(void)
+{
+ return 100000000ULL;
+}
+#endif /* CONFIG_CFS_BANDWIDTH */
+
struct cfs_bandwidth {
#ifdef CONFIG_CFS_BANDWIDTH
raw_spinlock_t lock;
--
2.49.0