0001 What: /sys/kernel/fadump/*
0002 Date: Dec 2019
0003 Contact: linuxppc-dev@lists.ozlabs.org
0004 Description:
0005 The /sys/kernel/fadump/* is a collection of FADump sysfs
0006 file provide information about the configuration status
0007 of Firmware Assisted Dump (FADump).
0008
0009 What: /sys/kernel/fadump/enabled
0010 Date: Dec 2019
0011 Contact: linuxppc-dev@lists.ozlabs.org
0012 Description: read only
0013 Primarily used to identify whether the FADump is enabled in
0014 the kernel or not.
0015 User: Kdump service
0016
0017 What: /sys/kernel/fadump/registered
0018 Date: Dec 2019
0019 Contact: linuxppc-dev@lists.ozlabs.org
0020 Description: read/write
0021 Helps to control the dump collect feature from userspace.
0022 Setting 1 to this file enables the system to collect the
0023 dump and 0 to disable it.
0024 User: Kdump service
0025
0026 What: /sys/kernel/fadump/release_mem
0027 Date: Dec 2019
0028 Contact: linuxppc-dev@lists.ozlabs.org
0029 Description: write only
0030 This is a special sysfs file and only available when
0031 the system is booted to capture the vmcore using FADump.
0032 It is used to release the memory reserved by FADump to
0033 save the crash dump.
0034
0035 What: /sys/kernel/fadump/mem_reserved
0036 Date: Dec 2019
0037 Contact: linuxppc-dev@lists.ozlabs.org
0038 Description: read only
0039 Provide information about the amount of memory reserved by
0040 FADump to save the crash dump in bytes.
