Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [PATCH v3 2/5] context_tracking: Switch to new static_branch API | Date | Thu, 12 Nov 2015 12:59:01 -0800 |
| |
This is much less error-prone than the old code.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> --- include/linux/context_tracking_state.h | 4 ++-- kernel/context_tracking.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h index ee956c528fab..1d34fe68f48a 100644 --- a/include/linux/context_tracking_state.h +++ b/include/linux/context_tracking_state.h @@ -22,12 +22,12 @@ struct context_tracking { }; #ifdef CONFIG_CONTEXT_TRACKING -extern struct static_key context_tracking_enabled; +extern struct static_key_false context_tracking_enabled; DECLARE_PER_CPU(struct context_tracking, context_tracking); static inline bool context_tracking_is_enabled(void) { - return static_key_false(&context_tracking_enabled); + return static_branch_unlikely(&context_tracking_enabled); } static inline bool context_tracking_cpu_is_enabled(void) diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index 0a495ab35bc7..d0fb09e40784 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c @@ -24,7 +24,7 @@ #define CREATE_TRACE_POINTS #include <trace/events/context_tracking.h> -struct static_key context_tracking_enabled = STATIC_KEY_INIT_FALSE; +DEFINE_STATIC_KEY_FALSE(context_tracking_enabled); EXPORT_SYMBOL_GPL(context_tracking_enabled); DEFINE_PER_CPU(struct context_tracking, context_tracking); @@ -191,7 +191,7 @@ void __init context_tracking_cpu_set(int cpu) if (!per_cpu(context_tracking.active, cpu)) { per_cpu(context_tracking.active, cpu) = true; - static_key_slow_inc(&context_tracking_enabled); + static_branch_inc(&context_tracking_enabled); } if (initialized) -- 2.5.0
| |