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| author | Joe Lawrence | 2017-10-13 21:08:41 +0200 |
|---|---|---|
| committer | Jiri Kosina | 2017-10-19 10:08:56 +0200 |
| commit | 93862e385ded7c60351e09fcd2a541d273650905 (patch) | |
| tree | 22dc512303e988d00e327fa05c884e542fb5af55 /kernel/livepatch/patch.c | |
| parent | livepatch: Small shadow variable documentation fixes (diff) | |
| download | kernel-qcow2-linux-93862e385ded7c60351e09fcd2a541d273650905.tar.gz kernel-qcow2-linux-93862e385ded7c60351e09fcd2a541d273650905.tar.xz kernel-qcow2-linux-93862e385ded7c60351e09fcd2a541d273650905.zip | |
livepatch: add (un)patch callbacks
Provide livepatch modules a klp_object (un)patching notification
mechanism. Pre and post-(un)patch callbacks allow livepatch modules to
setup or synchronize changes that would be difficult to support in only
patched-or-unpatched code contexts.
Callbacks can be registered for target module or vmlinux klp_objects,
but each implementation is klp_object specific.
- Pre-(un)patch callbacks run before any (un)patching transition
starts.
- Post-(un)patch callbacks run once an object has been (un)patched and
the klp_patch fully transitioned to its target state.
Example use cases include modification of global data and registration
of newly available services/handlers.
See Documentation/livepatch/callbacks.txt for details and
samples/livepatch/ for examples.
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'kernel/livepatch/patch.c')
| -rw-r--r-- | kernel/livepatch/patch.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c index 52c4e907c14b..82d584225dc6 100644 --- a/kernel/livepatch/patch.c +++ b/kernel/livepatch/patch.c @@ -28,6 +28,7 @@ #include <linux/slab.h> #include <linux/bug.h> #include <linux/printk.h> +#include "core.h" #include "patch.h" #include "transition.h" |