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
57 	func = list_first_or_null_rcu(&ops->func_stack, struct klp_func,  in klp_ftrace_handler()
65 	if (WARN_ON_ONCE(!func))  in klp_ftrace_handler()
81 	if (unlikely(func->transition)) {  in klp_ftrace_handler()
101 			func = list_entry_rcu(func->stack_node.next,  in klp_ftrace_handler()
104 			if (&func->stack_node == &ops->func_stack)  in klp_ftrace_handler()
113 	if (func->nop)  in klp_ftrace_handler()
116 	klp_arch_set_pc(regs, (unsigned long)func->new_func);  in klp_ftrace_handler()
135 static void klp_unpatch_func(struct klp_func *func)  in klp_unpatch_func()  argument
139 	if (WARN_ON(!func->patched))  in klp_unpatch_func()
141 	if (WARN_ON(!func->old_func))  in klp_unpatch_func()
144 	ops = klp_find_ops(func->old_func);  in klp_unpatch_func()
152 			klp_get_ftrace_location((unsigned long)func->old_func);  in klp_unpatch_func()
159 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
163 		list_del_rcu(&func->stack_node);  in klp_unpatch_func()
166 	func->patched = false;  in klp_unpatch_func()
169 static int klp_patch_func(struct klp_func *func)  in klp_patch_func()  argument
174 	if (WARN_ON(!func->old_func))  in klp_patch_func()
177 	if (WARN_ON(func->patched))  in klp_patch_func()
180 	ops = klp_find_ops(func->old_func);  in klp_patch_func()
185 			klp_get_ftrace_location((unsigned long)func->old_func);  in klp_patch_func()
188 				func->old_name);  in klp_patch_func()
196 		ops->fops.func = klp_ftrace_handler;  in klp_patch_func()
204 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
209 			       func->old_name, ret);  in klp_patch_func()
216 			       func->old_name, ret);  in klp_patch_func()
223 		list_add_rcu(&func->stack_node, &ops->func_stack);  in klp_patch_func()
226 	func->patched = true;  in klp_patch_func()
231 	list_del_rcu(&func->stack_node);  in klp_patch_func()
239 	struct klp_func *func;  in __klp_unpatch_object()  local
241 	klp_for_each_func(obj, func) {  in __klp_unpatch_object()
242 		if (nops_only && !func->nop)  in __klp_unpatch_object()
245 		if (func->patched)  in __klp_unpatch_object()
246 			klp_unpatch_func(func);  in __klp_unpatch_object()
261 	struct klp_func *func;  in klp_patch_object()  local
267 	klp_for_each_func(obj, func) {  in klp_patch_object()
268 		ret = klp_patch_func(func);  in klp_patch_object()