Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch
index dac7e1e..bea7bd5 100644
--- a/Documentation/ABI/testing/sysfs-kernel-livepatch
+++ b/Documentation/ABI/testing/sysfs-kernel-livepatch
@@ -33,18 +33,6 @@
 		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
@@ -57,7 +45,7 @@
 		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.
+		Documentation/livepatch/livepatch.rst for more information.
 
 What:		/sys/kernel/livepatch/<patch>/<object>
 Date:		Nov 2014