40 	struct klp_func *func;  in klp_find_ops()  local
43 		func = list_first_entry(&ops->func_stack, struct klp_func,  in klp_find_ops()
45 		if (func->old_addr == old_addr)  in klp_find_ops()
58 	struct klp_func *func;  in klp_ftrace_handler()  local
69 	func = list_first_or_null_rcu(&ops->func_stack, struct klp_func,  in klp_ftrace_handler()
77 	if (WARN_ON_ONCE(!func))  in klp_ftrace_handler()
93 	if (unlikely(func->transition)) {  in klp_ftrace_handler()
113 			func = list_entry_rcu(func->stack_node.next,  in klp_ftrace_handler()
116 			if (&func->stack_node == &ops->func_stack)  in klp_ftrace_handler()
121 	klp_arch_set_pc(regs, (unsigned long)func->new_func);  in klp_ftrace_handler()
139 static void klp_unpatch_func(struct klp_func *func)  in klp_unpatch_func()  argument
143 	if (WARN_ON(!func->patched))  in klp_unpatch_func()
145 	if (WARN_ON(!func->old_addr))  in klp_unpatch_func()
148 	ops = klp_find_ops(func->old_addr);  in klp_unpatch_func()
155 		ftrace_loc = klp_get_ftrace_location(func->old_addr);  in klp_unpatch_func()
162 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
166 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
169 	func->patched = false;  in klp_unpatch_func()
172 static int klp_patch_func(struct klp_func *func)  in klp_patch_func()  argument
177 	if (WARN_ON(!func->old_addr))  in klp_patch_func()
180 	if (WARN_ON(func->patched))  in klp_patch_func()
183 	ops = klp_find_ops(func->old_addr);  in klp_patch_func()
187 		ftrace_loc = klp_get_ftrace_location(func->old_addr);  in klp_patch_func()
190 				func->old_name);  in klp_patch_func()
198 		ops->fops.func = klp_ftrace_handler;  in klp_patch_func()
206 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
211 			       func->old_name, ret);  in klp_patch_func()
218 			       func->old_name, ret);  in klp_patch_func()
225 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
228 	func->patched = true;  in klp_patch_func()
233 	list_del_rcu(&func->stack_node);  in klp_patch_func()
241 	struct klp_func *func;  in klp_unpatch_object()  local
243 	klp_for_each_func(obj, func)  in klp_unpatch_object()
244 		if (func->patched)  in klp_unpatch_object()
245 			klp_unpatch_func(func);  in klp_unpatch_object()
252 	struct klp_func *func;  in klp_patch_object()  local
258 	klp_for_each_func(obj, func) {  in klp_patch_object()
259 		ret = klp_patch_func(func);  in klp_patch_object()