17  *   DECLARE_STATIC_CALL(name, func);
18  *   DEFINE_STATIC_CALL(name, func);
19  *   DEFINE_STATIC_CALL_NULL(name, typename);
20  *   static_call(name)(args...);
21  *   static_call_cond(name)(args...);
22  *   static_call_update(name, func);
48  *   Each static_call() site calls into a trampoline associated with the name.
50  *   name will modify the trampoline's branch destination.
90  *     static_call_cond(name)(arg1);
108 #define STATIC_CALL_TRAMP_ADDR(name) &STATIC_CALL_TRAMP(name)  argument
115 #define __static_call(name)						\  argument
117 	__ADDRESSABLE(STATIC_CALL_KEY(name));				\
118 	&STATIC_CALL_TRAMP(name);					\
122 #define STATIC_CALL_TRAMP_ADDR(name) NULL  argument
126 #define DECLARE_STATIC_CALL(name, func)					\  argument
127 	extern struct static_call_key STATIC_CALL_KEY(name);		\
128 	extern typeof(func) STATIC_CALL_TRAMP(name);
130 #define static_call_update(name, func)					\  argument
132 	BUILD_BUG_ON(!__same_type(*(func), STATIC_CALL_TRAMP(name)));	\
133 	__static_call_update(&STATIC_CALL_KEY(name),			\
134 			     STATIC_CALL_TRAMP_ADDR(name), func);	\
161 #define DEFINE_STATIC_CALL(name, _func)					\  argument
162 	DECLARE_STATIC_CALL(name, _func);				\
163 	struct static_call_key STATIC_CALL_KEY(name) = {		\
167 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
169 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
170 	DECLARE_STATIC_CALL(name, _func);				\
171 	struct static_call_key STATIC_CALL_KEY(name) = {		\
175 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
177 #define static_call(name)	__static_call(name)  argument
178 #define static_call_cond(name)	(void)__static_call(name)  argument
180 #define EXPORT_STATIC_CALL(name)					\  argument
181 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
182 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
184 #define EXPORT_STATIC_CALL_GPL(name)					\  argument
185 	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
186 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
196 #define DEFINE_STATIC_CALL(name, _func)					\  argument
197 	DECLARE_STATIC_CALL(name, _func);				\
198 	struct static_call_key STATIC_CALL_KEY(name) = {		\
201 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
203 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
204 	DECLARE_STATIC_CALL(name, _func);				\
205 	struct static_call_key STATIC_CALL_KEY(name) = {		\
208 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
210 #define static_call(name)	__static_call(name)  argument
211 #define static_call_cond(name)	(void)__static_call(name)  argument
227 #define EXPORT_STATIC_CALL(name)					\  argument
228 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
229 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
231 #define EXPORT_STATIC_CALL_GPL(name)					\  argument
232 	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
233 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
243 #define DEFINE_STATIC_CALL(name, _func)					\  argument
244 	DECLARE_STATIC_CALL(name, _func);				\
245 	struct static_call_key STATIC_CALL_KEY(name) = {		\
249 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
250 	DECLARE_STATIC_CALL(name, _func);				\
251 	struct static_call_key STATIC_CALL_KEY(name) = {		\
255 #define static_call(name)						\  argument
256 	((typeof(STATIC_CALL_TRAMP(name))*)(STATIC_CALL_KEY(name).func))
272 #define __static_call_cond(name)					\  argument
274 	void *func = READ_ONCE(STATIC_CALL_KEY(name).func);		\
277 	(typeof(STATIC_CALL_TRAMP(name))*)func;				\
280 #define static_call_cond(name)	(void)__static_call_cond(name)  argument
293 #define EXPORT_STATIC_CALL(name)	EXPORT_SYMBOL(STATIC_CALL_KEY(name))  argument
294 #define EXPORT_STATIC_CALL_GPL(name)	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name))  argument