context_tracking: Rename context_tracking_is_cpu_enabled() to context_tracking_enabled_this_cpu()

Standardize the naming on top of the context_tracking_enabled_*() base.
Also make it clear we are checking the context tracking state of the
*current* CPU with this function. We'll need to add an API to check that
state on remote CPUs as well, so we must disambiguate the naming.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J . Wysocki <rjw@rjwysocki.net>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Link: https://lkml.kernel.org/r/20191016025700.31277-7-frederic@kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

include/linux/context_tracking.h

@@ -118,7 +118,7 @@ static inline void guest_enter_irqoff(void)
 	 * one time slice). Lets treat guest mode as quiescent state, just like
 	 * we do with user-mode execution.
 	 */
-	if (!context_tracking_cpu_is_enabled())
+	if (!context_tracking_enabled_this_cpu())
 		rcu_virt_note_context_switch(smp_processor_id());
 }
 

include/linux/context_tracking_state.h

@@ -31,7 +31,7 @@ static inline bool context_tracking_enabled(void)
 	return static_branch_unlikely(&context_tracking_key);
 }
 
-static inline bool context_tracking_cpu_is_enabled(void)
+static inline bool context_tracking_enabled_this_cpu(void)
 {
 	return __this_cpu_read(context_tracking.active);
 }
@@ -43,7 +43,7 @@ static inline bool context_tracking_in_user(void)
 #else
 static inline bool context_tracking_in_user(void) { return false; }
 static inline bool context_tracking_enabled(void) { return false; }
-static inline bool context_tracking_cpu_is_enabled(void) { return false; }
+static inline bool context_tracking_enabled_this_cpu(void) { return false; }
 #endif /* CONFIG_CONTEXT_TRACKING */
 
 #endif

include/linux/vtime.h

@@ -34,7 +34,7 @@ static inline bool vtime_accounting_enabled(void)
 static inline bool vtime_accounting_cpu_enabled(void)
 {
 	if (vtime_accounting_enabled()) {
-		if (context_tracking_cpu_is_enabled())
+		if (context_tracking_enabled_this_cpu())
 			return true;
 	}