binder: Stub out debug prints by default

Binder code is very hot, so checking frequently to see if a debug
message should be printed is a waste of cycles. We're not debugging
binder, so just stub out the debug prints to compile them out entirely.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>

drivers/android/binder.c

@@ -147,6 +147,7 @@ static int binder_set_stop_on_user_error(const char *val,
 module_param_call(stop_on_user_error, binder_set_stop_on_user_error,
 	param_get_int, &binder_stop_on_user_error, 0644);
 
+#ifdef DEBUG
 #define binder_debug(mask, x...) \
 	do { \
 		if (binder_debug_mask & mask) \
@@ -160,6 +161,16 @@ module_param_call(stop_on_user_error, binder_set_stop_on_user_error,
 		if (binder_stop_on_user_error) \
 			binder_stop_on_user_error = 2; \
 	} while (0)
+#else
+static inline void binder_debug(uint32_t mask, const char *fmt, ...)
+{
+}
+static inline void binder_user_error(const char *fmt, ...)
+{
+	if (binder_stop_on_user_error)
+		binder_stop_on_user_error = 2;
+}
+#endif
 
 #define binder_set_extended_error(ee, _id, _command, _param) \
 	do { \