freezer: convert freezable helpers to static inline where possible

Some of the freezable helpers have to be macros because their
condition argument needs to get evaluated every time through
the wait loop.  Convert the others to static inline to make
future changes easier.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

include/linux/freezer.h

@@ -159,46 +159,46 @@ static inline bool freezer_should_skip(struct task_struct *p)
 }
 
 /*
- * These macros are intended to be used whenever you want allow a sleeping
+ * These functions are intended to be used whenever you want allow a sleeping
  * task to be frozen. Note that neither return any clear indication of
  * whether a freeze event happened while in this function.
  */
 
 /* Like schedule(), but should not block the freezer. */
-#define freezable_schedule()						\
-({									\
-	freezer_do_not_count();						\
-	schedule();							\
-	freezer_count();						\
-})
+static inline void freezable_schedule(void)
+{
+	freezer_do_not_count();
+	schedule();
+	freezer_count();
+}
 
 /* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
-#define freezable_schedule_unsafe()					\
-({									\
-	freezer_do_not_count();						\
-	schedule();							\
-	freezer_count_unsafe();						\
-})
+static inline void freezable_schedule_unsafe(void)
+{
+	freezer_do_not_count();
+	schedule();
+	freezer_count_unsafe();
+}
 
 /* Like schedule_timeout_killable(), but should not block the freezer. */
-#define freezable_schedule_timeout_killable(timeout)			\
-({									\
-	long __retval;							\
-	freezer_do_not_count();						\
-	__retval = schedule_timeout_killable(timeout);			\
-	freezer_count();						\
-	__retval;							\
-})
+static inline long freezable_schedule_timeout_killable(long timeout)
+{
+	long __retval;
+	freezer_do_not_count();
+	__retval = schedule_timeout_killable(timeout);
+	freezer_count();
+	return __retval;
+}
 
 /* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
-#define freezable_schedule_timeout_killable_unsafe(timeout)		\
-({									\
-	long __retval;							\
-	freezer_do_not_count();						\
-	__retval = schedule_timeout_killable(timeout);			\
-	freezer_count_unsafe();						\
-	__retval;							\
-})
+static inline long freezable_schedule_timeout_killable_unsafe(long timeout)
+{
+	long __retval;
+	freezer_do_not_count();
+	__retval = schedule_timeout_killable(timeout);
+	freezer_count_unsafe();
+	return __retval;
+}
 
 /*
  * Freezer-friendly wrappers around wait_event_interruptible(),