[PATCH v4 03/15] livepatch: create temporary klp_update_patch_state() stub

Josh Poimboeuf
2017-01-19T15:47:56Z

Create temporary stubs for klp_update_patch_state() 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>
Reviewed-by: Petr Mladek <pmladek@suse.com>
---
include/linux/livepatch.h | 5 ++++-
kernel/livepatch/core.c | 3 +++
2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
index 9072f04..5cc20e5 100644
--- a/include/linux/livepatch.h
+++ b/include/linux/livepatch.h
@@ -123,10 +123,13 @@ void arch_klp_init_object_loaded(struct klp_patch *patch,
int klp_module_coming(struct module *mod);
void klp_module_going(struct module *mod);

+void klp_update_patch_state(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 void klp_update_patch_state(struct task_struct *task) {}

#endif /* CONFIG_LIVEPATCH */

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index af46438..217b39d 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_update_patch_state(struct task_struct *task) {}
+
static struct klp_ops *klp_find_ops(unsigned long old_addr)
{
struct klp_ops *ops;
--
2.7.4