context_tracking: Wrap static key check into more intuitive function name

Use a function with a meaningful name to check the global context
tracking state. static_key_false() is a bit confusing for reviewers.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>

4 files changed, 11 insertions, 7 deletions

diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 158158704c30..37b81bd51ec0 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -17,13 +17,13 @@ extern void __context_tracking_task_switch(struct task_struct *prev,
 
 static inline void user_enter(void)
 {
-        if (static_key_false(&context_tracking_enabled))
+        if (context_tracking_is_enabled())
                 context_tracking_user_enter();
 
 }
 static inline void user_exit(void)
 {
-        if (static_key_false(&context_tracking_enabled))
+        if (context_tracking_is_enabled())
                 context_tracking_user_exit();
 }
 
@@ -31,7 +31,7 @@ static inline enum ctx_state exception_enter(void)
 {
         enum ctx_state prev_ctx;
 
-        if (!static_key_false(&context_tracking_enabled))
+        if (!context_tracking_is_enabled())
                 return 0;
 
         prev_ctx = this_cpu_read(context_tracking.state);
@@ -42,7 +42,7 @@ static inline enum ctx_state exception_enter(void)
 
 static inline void exception_exit(enum ctx_state prev_ctx)
 {
-        if (static_key_false(&context_tracking_enabled)) {
+        if (context_tracking_is_enabled()) {
                 if (prev_ctx == IN_USER)
                         context_tracking_user_enter();
         }
@@ -51,7 +51,7 @@ static inline void exception_exit(enum ctx_state prev_ctx)
 static inline void context_tracking_task_switch(struct task_struct *prev,
                                                 struct task_struct *next)
 {
-        if (static_key_false(&context_tracking_enabled))
+        if (context_tracking_is_enabled())
                 __context_tracking_task_switch(prev, next);
 }
 #else
diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h
index 0f1979d0674f..0db535b79be7 100644
--- a/include/linux/context_tracking_state.h
+++ b/include/linux/context_tracking_state.h
@@ -22,6 +22,10 @@ struct context_tracking {
 extern struct static_key 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);
+}
 static inline bool context_tracking_in_user(void)
 {
         return __this_cpu_read(context_tracking.state) == IN_USER;
diff --git a/include/linux/tick.h b/include/linux/tick.h
index a004f66a6cf0..0175d8663b6c 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -165,7 +165,7 @@ extern cpumask_var_t tick_nohz_full_mask;
 
 static inline bool tick_nohz_full_enabled(void)
 {
-        if (!static_key_false(&context_tracking_enabled))
+        if (!context_tracking_is_enabled())
                 return false;
 
         return tick_nohz_full_running;
diff --git a/include/linux/vtime.h b/include/linux/vtime.h
index f5b72b364bda..807c732cbf29 100644
--- a/include/linux/vtime.h
+++ b/include/linux/vtime.h
@@ -19,7 +19,7 @@ static inline bool vtime_accounting_enabled(void) { return true; }
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
 static inline bool vtime_accounting_enabled(void)
 {
-        if (static_key_false(&context_tracking_enabled)) {
+        if (context_tracking_is_enabled()) {
                 if (context_tracking_active())
                         return true;
         }