28 	struct klp_func *func;  in klp_find_ops()  local
31 		func = list_first_entry(&ops->func_stack, struct klp_func,  in klp_find_ops()
33 		if (func->old_func == old_func)  in klp_find_ops()
46 	struct klp_func *func;  in klp_ftrace_handler()  local
62 	func = list_first_or_null_rcu(&ops->func_stack, struct klp_func,  in klp_ftrace_handler()
70 	if (WARN_ON_ONCE(!func))  in klp_ftrace_handler()
86 	if (unlikely(func->transition)) {  in klp_ftrace_handler()
106 			func = list_entry_rcu(func->stack_node.next,  in klp_ftrace_handler()
109 			if (&func->stack_node == &ops->func_stack)  in klp_ftrace_handler()
118 	if (func->nop)  in klp_ftrace_handler()
121 	ftrace_regs_set_instruction_pointer(fregs, (unsigned long)func->new_func);  in klp_ftrace_handler()
127 static void klp_unpatch_func(struct klp_func *func)  in klp_unpatch_func()  argument
131 	if (WARN_ON(!func->patched))  in klp_unpatch_func()
133 	if (WARN_ON(!func->old_func))  in klp_unpatch_func()
136 	ops = klp_find_ops(func->old_func);  in klp_unpatch_func()
143 		ftrace_loc = ftrace_location((unsigned long)func->old_func);  in klp_unpatch_func()
150 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
154 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
157 	func->patched = false;  in klp_unpatch_func()
160 static int klp_patch_func(struct klp_func *func)  in klp_patch_func()  argument
165 	if (WARN_ON(!func->old_func))  in klp_patch_func()
168 	if (WARN_ON(func->patched))  in klp_patch_func()
171 	ops = klp_find_ops(func->old_func);  in klp_patch_func()
175 		ftrace_loc = ftrace_location((unsigned long)func->old_func);  in klp_patch_func()
178 				func->old_name);  in klp_patch_func()
186 		ops->fops.func = klp_ftrace_handler;  in klp_patch_func()
197 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
202 			       func->old_name, ret);  in klp_patch_func()
209 			       func->old_name, ret);  in klp_patch_func()
216 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
219 	func->patched = true;  in klp_patch_func()
224 	list_del_rcu(&func->stack_node);  in klp_patch_func()
232 	struct klp_func *func;  in __klp_unpatch_object()  local
234 	klp_for_each_func(obj, func) {  in __klp_unpatch_object()
235 		if (nops_only && !func->nop)  in __klp_unpatch_object()
238 		if (func->patched)  in __klp_unpatch_object()
239 			klp_unpatch_func(func);  in __klp_unpatch_object()
254 	struct klp_func *func;  in klp_patch_object()  local
260 	klp_for_each_func(obj, func) {  in klp_patch_object()
261 		ret = klp_patch_func(func);  in klp_patch_object()