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-rw-r--r--kernel/sched/clock.c12
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);
78__read_mostly int sched_clock_running; 78__read_mostly int sched_clock_running;
79 79
80#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK 80#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
81static struct static_key __sched_clock_stable = STATIC_KEY_INIT; 81static DEFINE_STATIC_KEY_FALSE(__sched_clock_stable);
82static int __sched_clock_stable_early; 82static int __sched_clock_stable_early;
83 83
84int sched_clock_stable(void) 84int sched_clock_stable(void)
85{ 85{
86 return static_key_false(&__sched_clock_stable); 86 return static_branch_likely(&__sched_clock_stable);
87} 87}
88 88
89static void __set_sched_clock_stable(void) 89static void __set_sched_clock_stable(void)
90{ 90{
91 if (!sched_clock_stable()) 91 static_branch_enable(&__sched_clock_stable);
92 static_key_slow_inc(&__sched_clock_stable);
93
94 tick_dep_clear(TICK_DEP_BIT_CLOCK_UNSTABLE); 92 tick_dep_clear(TICK_DEP_BIT_CLOCK_UNSTABLE);
95} 93}
96 94
@@ -109,9 +107,7 @@ void set_sched_clock_stable(void)
109static void __clear_sched_clock_stable(struct work_struct *work) 107static void __clear_sched_clock_stable(struct work_struct *work)
110{ 108{
111 /* XXX worry about clock continuity */ 109 /* XXX worry about clock continuity */
112 if (sched_clock_stable()) 110 static_branch_disable(&__sched_clock_stable);
113 static_key_slow_dec(&__sched_clock_stable);
114
115 tick_dep_set(TICK_DEP_BIT_CLOCK_UNSTABLE); 111 tick_dep_set(TICK_DEP_BIT_CLOCK_UNSTABLE);
116} 112}
117 113