kdump.sysconfig: add the kdump logger configurations

The kdump logger has the default values of the log levels, but
sometimes, need to change the value of log level in order to
get more debugging messages for troubleshooting.

Here, user will have a chance to reconfigure it.

Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>

kdump.sysconfig

@@ -35,3 +35,19 @@ KEXEC_ARGS=""
 
 #What is the image type used for kdump
 KDUMP_IMG="vmlinuz"
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.aarch64

@@ -35,3 +35,19 @@ KEXEC_ARGS=""
 
 #What is the image type used for kdump
 KDUMP_IMG="vmlinuz"
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.i386

@@ -38,3 +38,19 @@ KDUMP_IMG="vmlinuz"
 
 #What is the images extension.  Relocatable kernels don't have one
 KDUMP_IMG_EXT=""
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.ppc64

@@ -40,3 +40,19 @@ KDUMP_IMG="vmlinuz"
 KDUMP_IMG_EXT=""
 
 #Specify the action after failure
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.ppc64le

@@ -40,3 +40,19 @@ KDUMP_IMG="vmlinuz"
 KDUMP_IMG_EXT=""
 
 #Specify the action after failure
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.s390x

@@ -41,3 +41,19 @@ KDUMP_IMG="vmlinuz"
 
 #What is the images extension.  Relocatable kernels don't have one
 KDUMP_IMG_EXT=""
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5

kdump.sysconfig.x86_64

@@ -38,3 +38,19 @@ KDUMP_IMG="vmlinuz"
 
 #What is the images extension.  Relocatable kernels don't have one
 KDUMP_IMG_EXT=""
+
+# Logging is controlled by following global variables:
+#   - @var kdump_stdloglvl - logging level to standard error (console output)
+#   - @var kdump_sysloglvl - logging level to syslog (by logger command)
+#   - @var kdump_kmsgloglvl - logging level to /dev/kmsg (only for boot-time)
+# If any of the variables is not set, this function set it to default:
+#   - @var kdump_stdloglvl=4 (info)
+#   - @var kdump_sysloglvl=4 (info)
+#   - @var kdump_kmsgloglvl=0 (no logging)
+#
+# Logging levels: fatal(1),error(2),warn(3),info(4),debug(5),trace(6)
+#
+# For example: the following configurations indicate that kdump messages will be printed
+# to console and journald for debugging case.
+# kdump_sysloglvl=5
+# kdump_stdloglvl=5