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-rw-r--r--Documentation/ABI/testing/sysfs-kernel-livepatch26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch
index d5d39748382f..dac7e1e62a8b 100644
--- a/Documentation/ABI/testing/sysfs-kernel-livepatch
+++ b/Documentation/ABI/testing/sysfs-kernel-livepatch
@@ -33,6 +33,32 @@ Description:
An attribute which indicates whether the patch is currently in
transition.
+What: /sys/kernel/livepatch/<patch>/signal
+Date: Nov 2017
+KernelVersion: 4.15.0
+Contact: live-patching@vger.kernel.org
+Description:
+ A writable attribute that allows administrator to affect the
+ course of an existing transition. Writing 1 sends a fake
+ signal to all remaining blocking tasks. The fake signal
+ means that no proper signal is delivered (there is no data in
+ signal pending structures). Tasks are interrupted or woken up,
+ and forced to change their patched state.
+
+What: /sys/kernel/livepatch/<patch>/force
+Date: Nov 2017
+KernelVersion: 4.15.0
+Contact: live-patching@vger.kernel.org
+Description:
+ A writable attribute that allows administrator to affect the
+ course of an existing transition. Writing 1 clears
+ TIF_PATCH_PENDING flag of all tasks and thus forces the tasks to
+ the patched or unpatched state. Administrator should not
+ use this feature without a clearance from a patch
+ distributor. Removal (rmmod) of patch modules is permanently
+ disabled when the feature is used. See
+ Documentation/livepatch/livepatch.txt for more information.
+
What: /sys/kernel/livepatch/<patch>/<object>
Date: Nov 2014
KernelVersion: 3.19.0