[tip: sched/hrtick] sched/hrtick: Mark hrtick_clear() as always used

[tip-bot2 for Ingo Molnar]

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

Commit-ID:     eef9f648fb0e92618041f019d4bdcf7ae17cb743
Gitweb:        https://git.kernel.org/tip/eef9f648fb0e92618041f019d4bdcf7ae17cb743
Author:        Ingo Molnar <mingo@xxxxxxxxxx>
AuthorDate:    Mon, 02 Mar 2026 11:26:12 
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Fri, 06 Mar 2026 06:20:03 +01:00

sched/hrtick: Mark hrtick_clear() as always used

This recent commit:

  96d1610e0b20b ("sched: Optimize hrtimer handling")

introduced a new build warning when !CONFIG_HOTPLUG_CPU
while SCHED_HRTIMERS=y [ == HIGH_RES_TIMERS=y ]:

  /tip.testing/kernel/sched/core.c:882:13: warning: ‘hrtick_clear’ defined but not used [-Wunused-function]

Mark this helper function as always-used, instead of complicating
the code with another obscure #ifdef.

Fixes: 96d1610e0b20b ("sched: Optimize hrtimer handling")
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://patch.msgid.link/177245077226.1647592.1821545206171336606.tip-bot2@tip-bot2
---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 49a64b4..a4e7698 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -879,7 +879,7 @@ enum {
 	HRTICK_SCHED_REARM_HRTIMER	= BIT(3)
 };
 
-static void hrtick_clear(struct rq *rq)
+static void __used hrtick_clear(struct rq *rq)
 {
 	if (hrtimer_active(&rq->hrtick_timer))
 		hrtimer_cancel(&rq->hrtick_timer);