From a6963e4745ccb8c3f00fb382f0f069839774c632 Mon Sep 17 00:00:00 2001
From: tangbin <tangbin@cmss.chinamobile.com>
Date: Mon, 5 Sep 2022 12:09:06 -0400
Subject: [PATCH 34/38] livepatch-patch-hook: fix kpatch-build error which do
 not support ftrace
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When using the kernel 5.10.0-60.18.0.50.oe2203 in x86_64, and chose the
livepatch with ftrace, it will show not support for this feature, which
is not allowed, the error displays as follows:

In file included from /root/.kpatch/tmp/patch/patch-hook.c:21:
/root/.kpatch/tmp/patch/livepatch-patch-hook.c: In function ‘patch_init’:
/root/.kpatch/tmp/patch/livepatch-patch-hook.c:606:8: error: implicit declaration of function ‘klp_register_patch’; did you mean ‘klp_enable_patch’? [-Werror=implicit-function-declaration]
  606 |  ret = klp_register_patch(lpatch);
      |        ^~~~~~~~~~~~~~~~~~
      |        klp_enable_patch

So fix this problem.

Signed-off-by: tangbin <tangbin@cmss.chinamobile.com>
---
 kmod/patch/livepatch-patch-hook.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kmod/patch/livepatch-patch-hook.c b/kmod/patch/livepatch-patch-hook.c
index b565a6a..5d8780c 100644
--- a/kmod/patch/livepatch-patch-hook.c
+++ b/kmod/patch/livepatch-patch-hook.c
@@ -70,6 +70,8 @@
       RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(8, 2)
 #  define HAVE_SIMPLE_ENABLE
 # endif
+# elif (defined(CONFIG_LIVEPATCH_FTRACE))
+#  define HAVE_SIMPLE_ENABLE
 #endif
 
 #ifdef RHEL_RELEASE_CODE
-- 
2.33.0