70-kdump.rules.in

@if @ARCH@ s390 s390x
#
# For s390x the ELF header is created in the kdump kernel and therefore
# no kdump udev rules are required.
#
@else

# Do nothing if kernel itself updates vmcoreinfo on hotplug 
SUBSYSTEM=="cpu", ATTRS{crash_hotplug}=="1", GOTO="kdump_end"
SUBSYSTEM=="memory", ATTRS{crash_hotplug}=="1", GOTO="kdump_end"

# Kdump core headers needs to be regnerated if the CPUs or memory changes.
# For this, reload kdump.
SUBSYSTEM=="memory", ACTION=="add|remove", GOTO="kdump_try_restart"
@if @ARCH@ ppc ppc64 ppc64le
SUBSYSTEM=="cpu", ACTION=="online", GOTO="kdump_try_restart"
@endif

GOTO="kdump_end"

# Reload only if panic kernel is already loaded
LABEL="kdump_try_restart"
PROGRAM="/bin/cat /sys/kernel/kexec_crash_loaded", RESULT!="0", RUN+="/usr/lib/kdump/load-once.sh"
@if @ARCH@ ppc64 ppc64le
TEST=="/sys/kernel/fadump/hotplug_ready", PROGRAM="/bin/cat /sys/kernel/fadump/hotplug_ready", RESULT=="1", GOTO="kdump_end"
SUBSYSTEM=="memory", TEST=="/sys/kernel/fadump/registered", PROGRAM="/bin/cat /sys/kernel/fadump/registered", RESULT!="0", RUN+="/usr/lib/kdump/load-once.sh"
@endif

LABEL="kdump_end"
@endif