From 734790aa7522e0c4b6555e5759bb3d7b7ba87b82 Mon Sep 17 00:00:00 2001
From: Hari Bathini <hbathini@linux.vnet.ibm.com>
Date: Fri, 25 Jul 2014 00:08:53 +0530
Subject: [PATCH] kdump: Modify kdump script to start the firmware assisted
 dump.

During service kdump start, if firmware assisted dump is not enabled then
fallback to starting of existing kexec based kdump.  If firmware assisted
is enabled but not running, then start firmware assisted dump by echo'ing
1 to '/sys/kernel/fadump_registered' file.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
---
 kdumpctl | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/kdumpctl b/kdumpctl
index d281abb..199d2a9 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -662,6 +662,29 @@ check_dump_feasibility()
 	return $?
 }
 
+start_fadump()
+{
+	echo 1 > $FADUMP_REGISTER_SYS_NODE
+	if ! check_current_fadump_status; then
+		echo "fadump: failed to register"
+		return 1
+	fi
+
+	echo "fadump: registered successfully"
+	return 0
+}
+
+start_dump()
+{
+	if [ $DEFAULT_DUMP_MODE == "fadump" ]; then
+		start_fadump
+	else
+		load_kdump
+	fi
+
+	return $?
+}
+
 start()
 {
 	check_config
@@ -703,7 +726,8 @@ start()
 		echo "Starting kdump: [FAILED]"
 		return 1
 	fi
-	load_kdump
+
+	start_dump
 	if [ $? != 0 ]; then
 		echo "Starting kdump: [FAILED]"
 		return 1