[PATCH 3/3] livepatch: Use FTRACE_OPS_FL_PERMANENT

[Miroslav Benes]

Use FTRACE_OPS_FL_PERMANENT flag to be immune to toggling the
'ftrace_enabled' sysctl knob.

Signed-off-by: Miroslav Benes <mbe...@suse.cz>
---
 kernel/livepatch/patch.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c
index bd43537702bd..b552cf2d85f8 100644
--- a/kernel/livepatch/patch.c
+++ b/kernel/livepatch/patch.c
@@ -196,7 +196,8 @@ static int klp_patch_func(struct klp_func *func)
                ops->fops.func = klp_ftrace_handler;
                ops->fops.flags = FTRACE_OPS_FL_SAVE_REGS |
                                  FTRACE_OPS_FL_DYNAMIC |
-                                 FTRACE_OPS_FL_IPMODIFY;
+                                 FTRACE_OPS_FL_IPMODIFY |
+                                 FTRACE_OPS_FL_PERMANENT;
 
                list_add(&ops->node, &klp_ops);
 
-- 
2.23.0