sched/clock: Update static_key usage

sched_clock was still using the deprecated static_key interface.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 4 insertions, 8 deletions

diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
index e85a725e5c34..5d6dd38b449c 100644
--- a/kernel/sched/clock.c
+++ b/kernel/sched/clock.c
@@ -78,19 +78,17 @@ EXPORT_SYMBOL_GPL(sched_clock);
 __read_mostly int sched_clock_running;
 
 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
-static struct static_key __sched_clock_stable = STATIC_KEY_INIT;
+static DEFINE_STATIC_KEY_FALSE(__sched_clock_stable);
 static int __sched_clock_stable_early;
 
 int sched_clock_stable(void)
 {
-        return static_key_false(&__sched_clock_stable);
+        return static_branch_likely(&__sched_clock_stable);
 }
 
 static void __set_sched_clock_stable(void)
 {
-        if (!sched_clock_stable())
-                static_key_slow_inc(&__sched_clock_stable);
-
+        static_branch_enable(&__sched_clock_stable);
         tick_dep_clear(TICK_DEP_BIT_CLOCK_UNSTABLE);
 }
 
@@ -109,9 +107,7 @@ void set_sched_clock_stable(void)
 static void __clear_sched_clock_stable(struct work_struct *work)
 {
         /* XXX worry about clock continuity */
-        if (sched_clock_stable())
-                static_key_slow_dec(&__sched_clock_stable);
-
+        static_branch_disable(&__sched_clock_stable);
         tick_dep_set(TICK_DEP_BIT_CLOCK_UNSTABLE);
 }