jump_label: Provide jump_label_key initializers

Provide two initializers for jump_label_key that initialize it enabled
or disabled. Also modify all jump_label code to allow for jump_labels to be
initialized enabled.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jason Baron <jbaron@redhat.com>
Link: http://lkml.kernel.org/n/tip-p40e3yj21b68y03z1yv825e7@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 4 deletions

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 3fb7b79c86fd..30c3c7708132 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -248,8 +248,13 @@ void jump_label_apply_nops(struct module *mod)
         if (iter_start == iter_stop)
                 return;
 
-        for (iter = iter_start; iter < iter_stop; iter++)
-                arch_jump_label_transform_static(iter, JUMP_LABEL_DISABLE);
+        for (iter = iter_start; iter < iter_stop; iter++) {
+                struct jump_label_key *iterk;
+
+                iterk = (struct jump_label_key *)(unsigned long)iter->key;
+                arch_jump_label_transform_static(iter, jump_label_enabled(iterk) ?
+                                JUMP_LABEL_ENABLE : JUMP_LABEL_DISABLE);
+        }
 }
 
 static int jump_label_add_module(struct module *mod)
@@ -289,8 +294,7 @@ static int jump_label_add_module(struct module *mod)
                 key->next = jlm;
 
                 if (jump_label_enabled(key))
-                        __jump_label_update(key, iter, iter_stop,
-                                            JUMP_LABEL_ENABLE);
+                        __jump_label_update(key, iter, iter_stop, JUMP_LABEL_ENABLE);
         }
 
         return 0;