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[RFC PATCH v2 08/18] livepatch: temporary stubs for klp_patch_pending() and klp_patch_task()

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  [RFC PATCH v2 08/18] livepatch: temporary stubs for klp_patch_pending() and klp_patch_task() Josh Poimboeuf <jpoimboe@redhat.com> - 2016-04-28 22:50 +0200

#1390501 — [RFC PATCH v2 08/18] livepatch: temporary stubs for klp_patch_pending() and klp_patch_task()

Create temporary stubs for klp_patch_pending() and klp_patch_task() so
we can add TIF_PATCH_PENDING to different architectures in separate
patches without breaking build bisectability.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
 include/linux/livepatch.h | 7 ++++++-
 kernel/livepatch/core.c   | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
index 0933ca4..a8c6c9c 100644
--- a/include/linux/livepatch.h
+++ b/include/linux/livepatch.h
@@ -118,10 +118,15 @@ int klp_disable_patch(struct klp_patch *);
 int klp_module_coming(struct module *mod);
 void klp_module_going(struct module *mod);
 
+static inline bool klp_patch_pending(struct task_struct *task) { return false; }
+void klp_patch_task(struct task_struct *task);
+
 #else /* !CONFIG_LIVEPATCH */
 
 static inline int klp_module_coming(struct module *mod) { return 0; }
-static inline void klp_module_going(struct module *mod) { }
+static inline void klp_module_going(struct module *mod) {}
+static inline bool klp_patch_pending(struct task_struct *task) { return false; }
+static inline void klp_patch_task(struct task_struct *task) {}
 
 #endif /* CONFIG_LIVEPATCH */
 
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index a19f195..6ea6880 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -64,6 +64,9 @@ static LIST_HEAD(klp_ops);
 
 static struct kobject *klp_root_kobj;
 
+/* TODO: temporary stub */
+void klp_patch_task(struct task_struct *task) {}
+
 static struct klp_ops *klp_find_ops(unsigned long old_addr)
 {
 	struct klp_ops *ops;
-- 
2.4.11

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