From 3405c3b3b53f35459f425d7cf3c0ffaf759cade4 Mon Sep 17 00:00:00 2001
From: Martin Wilck <mwilck@suse.com>
Date: Mon, 27 Jan 2020 17:30:24 +0100
Subject: [PATCH] kdump: activate udev rules late during boot

The kdump udev rule is very broad in scope and may slow down
booting strongly, especially during the coldplug phase where
"add" events for lots of CPU and memory devices have to be
processed. Therefore, activate this rule (which has the purpose
to support real hotplug rather than coldplug) late in the boot
sequence.
---
 CMakeLists.txt     | 2 +-
 init/kdump.service | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f16f532..03eb133 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -206,7 +206,7 @@ ADD_CUSTOM_TARGET(
 INSTALL(FILES
     ${CMAKE_CURRENT_BINARY_DIR}/70-kdump.rules
     DESTINATION
-        /etc/udev/rules.d
+        /usr/lib/kdump
 )
 
 #
diff --git a/init/kdump.service b/init/kdump.service
index 997805f..fb19f84 100644
--- a/init/kdump.service
+++ b/init/kdump.service
@@ -5,6 +5,8 @@ After=local-fs.target network.service YaST2-Second-Stage.service YaST2-Firstboot
 [Service]
 Type=oneshot
 ExecStart=/lib/kdump/load.sh --update
+ExecStartPost=-/usr/bin/cp /usr/lib/kdump/70-kdump.rules /run/udev/rules.d/70-kdump.rules
+ExecStopPost=-/usr/bin/rm -f /run/udev/rules.d/70-kdump.rules
 ExecStop=/lib/kdump/unload.sh
 RemainAfterExit=true
 
-- 
2.25.0