What: /sys/kernel/fadump/* Date: Dec 2019 Contact: linuxppc-dev@lists.ozlabs.org Description: The /sys/kernel/fadump/* is a collection of FADump sysfs file provide information about the configuration status of Firmware Assisted Dump (FADump). What: /sys/kernel/fadump/enabled Date: Dec 2019 Contact: linuxppc-dev@lists.ozlabs.org Description: read only Primarily used to identify whether the FADump is enabled in the kernel or not. User: Kdump service What: /sys/kernel/fadump/registered Date: Dec 2019 Contact: linuxppc-dev@lists.ozlabs.org Description: read/write Helps to control the dump collect feature from userspace. Setting 1 to this file enables the system to collect the dump and 0 to disable it. User: Kdump service What: /sys/kernel/fadump/release_mem Date: Dec 2019 Contact: linuxppc-dev@lists.ozlabs.org Description: write only This is a special sysfs file and only available when the system is booted to capture the vmcore using FADump. It is used to release the memory reserved by FADump to save the crash dump. What: /sys/kernel/fadump/mem_reserved Date: Dec 2019 Contact: linuxppc-dev@lists.ozlabs.org Description: read only Provide information about the amount of memory reserved by FADump to save the crash dump in bytes. What: /sys/kernel/fadump/hotplug_ready Date: Apr 2024 Contact: linuxppc-dev@lists.ozlabs.org Description: read only Kdump udev rule re-registers fadump on memory add/remove events, primarily to update the elfcorehdr. This sysfs indicates the kdump udev rule that fadump re-registration is not required on memory add/remove events because elfcorehdr is now prepared in the second/fadump kernel. User: kexec-tools What: /sys/kernel/fadump/bootargs_append Date: May 2024 Contact: linuxppc-dev@lists.ozlabs.org Description: read/write This is a special sysfs file available to setup additional parameters to be passed to capture kernel.