create-diff-object: include new functions

kpatch-build/create-diff-object.c

@@ -990,6 +990,12 @@ int kpatch_include_changed_functions(struct kpatch_elf *kelf)
 			kpatch_include_symbol(sym, 0);
 		}
 
+		if (sym->status == NEW &&
+		    sym->type == STT_FUNC) {
+			log_normal("new function: %s\n", sym->name);
+			kpatch_include_symbol(sym, 0);
+		}
+
 		if (sym->type == STT_FILE)
 			sym->include = 1;
 	}

test/integration/new-function.patch

@@ -0,0 +1,26 @@
+Index: src/drivers/tty/n_tty.c
+===================================================================
+--- src.orig/drivers/tty/n_tty.c
++++ src/drivers/tty/n_tty.c
+@@ -2304,7 +2304,7 @@ static ssize_t n_tty_read(struct tty_str
+  *		  lock themselves)
+  */
+ 
+-static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
++static ssize_t noinline kpatch_n_tty_write(struct tty_struct *tty, struct file *file,
+ 			   const unsigned char *buf, size_t nr)
+ {
+ 	const unsigned char *b = buf;
+@@ -2393,6 +2393,12 @@ break_out:
+ 	return (b - buf) ? b - buf : retval;
+ }
+ 
++static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
++			   const unsigned char *buf, size_t nr)
++{
++	return kpatch_n_tty_write(tty, file, buf, nr);
++}
++
+ /**
+  *	n_tty_poll		-	poll method for N_TTY
+  *	@tty: terminal device