17  *   DECLARE_STATIC_CALL(name, func);
18  *   DEFINE_STATIC_CALL(name, func);
19  *   DEFINE_STATIC_CALL_NULL(name, typename);
20  *   DEFINE_STATIC_CALL_RET0(name, typename);
24  *   static_call(name)(args...);
25  *   static_call_cond(name)(args...);
26  *   static_call_update(name, func);
27  *   static_call_query(name);
55  *   Each static_call() site calls into a trampoline associated with the name.
57  *   name will modify the trampoline's branch destination.
97  *     static_call_cond(name)(arg1);
104  *   func = static_call_query(name);
146 #define STATIC_CALL_TRAMP_ADDR(name) &STATIC_CALL_TRAMP(name)  argument
149 #define STATIC_CALL_TRAMP_ADDR(name) NULL  argument
152 #define static_call_update(name, func)					\  argument
154 	typeof(&STATIC_CALL_TRAMP(name)) __F = (func);			\
155 	__static_call_update(&STATIC_CALL_KEY(name),			\
156 			     STATIC_CALL_TRAMP_ADDR(name), __F);	\
159 #define static_call_query(name) (READ_ONCE(STATIC_CALL_KEY(name).func))  argument
183 #define __DEFINE_STATIC_CALL(name, _func, _func_init)			\  argument
184 	DECLARE_STATIC_CALL(name, _func);				\
185 	struct static_call_key STATIC_CALL_KEY(name) = {		\
189 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func_init)
191 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
192 	DECLARE_STATIC_CALL(name, _func);				\
193 	struct static_call_key STATIC_CALL_KEY(name) = {		\
197 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
199 #define static_call_cond(name)	(void)__static_call(name)  argument
201 #define EXPORT_STATIC_CALL(name)					\  argument
202 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
203 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
204 #define EXPORT_STATIC_CALL_GPL(name)					\  argument
205 	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
206 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
209 #define EXPORT_STATIC_CALL_TRAMP(name)					\  argument
210 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name));				\
211 	ARCH_ADD_TRAMP_KEY(name)
212 #define EXPORT_STATIC_CALL_TRAMP_GPL(name)				\  argument
213 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name));			\
214 	ARCH_ADD_TRAMP_KEY(name)
220 #define __DEFINE_STATIC_CALL(name, _func, _func_init)			\  argument
221 	DECLARE_STATIC_CALL(name, _func);				\
222 	struct static_call_key STATIC_CALL_KEY(name) = {		\
225 	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func_init)
227 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
228 	DECLARE_STATIC_CALL(name, _func);				\
229 	struct static_call_key STATIC_CALL_KEY(name) = {		\
232 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
235 #define static_call_cond(name)	(void)__static_call(name)  argument
256 #define EXPORT_STATIC_CALL(name)					\  argument
257 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
258 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
259 #define EXPORT_STATIC_CALL_GPL(name)					\  argument
260 	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name));			\
261 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
264 #define EXPORT_STATIC_CALL_TRAMP(name)					\  argument
265 	EXPORT_SYMBOL(STATIC_CALL_TRAMP(name))
266 #define EXPORT_STATIC_CALL_TRAMP_GPL(name)				\  argument
267 	EXPORT_SYMBOL_GPL(STATIC_CALL_TRAMP(name))
278 #define __DEFINE_STATIC_CALL(name, _func, _func_init)			\  argument
279 	DECLARE_STATIC_CALL(name, _func);				\
280 	struct static_call_key STATIC_CALL_KEY(name) = {		\
284 #define DEFINE_STATIC_CALL_NULL(name, _func)				\  argument
285 	DECLARE_STATIC_CALL(name, _func);				\
286 	struct static_call_key STATIC_CALL_KEY(name) = {		\
304 #define __static_call_cond(name)					\  argument
306 	void *func = READ_ONCE(STATIC_CALL_KEY(name).func);		\
309 	(typeof(STATIC_CALL_TRAMP(name))*)func;				\
312 #define static_call_cond(name)	(void)__static_call_cond(name)  argument
325 #define EXPORT_STATIC_CALL(name)	EXPORT_SYMBOL(STATIC_CALL_KEY(name))  argument
326 #define EXPORT_STATIC_CALL_GPL(name)	EXPORT_SYMBOL_GPL(STATIC_CALL_KEY(name))  argument
330 #define DEFINE_STATIC_CALL(name, _func)					\  argument
331 	__DEFINE_STATIC_CALL(name, _func, _func)
333 #define DEFINE_STATIC_CALL_RET0(name, _func)				\  argument
334 	__DEFINE_STATIC_CALL(name, _func, __static_call_return0)