1What: /sys/kernel/fadump/* 2Date: Dec 2019 3Contact: linuxppc-dev@lists.ozlabs.org 4Description: 5 The /sys/kernel/fadump/* is a collection of FADump sysfs 6 file provide information about the configuration status 7 of Firmware Assisted Dump (FADump). 8 9What: /sys/kernel/fadump/enabled 10Date: Dec 2019 11Contact: linuxppc-dev@lists.ozlabs.org 12Description: read only 13 Primarily used to identify whether the FADump is enabled in 14 the kernel or not. 15User: Kdump service 16 17What: /sys/kernel/fadump/registered 18Date: Dec 2019 19Contact: linuxppc-dev@lists.ozlabs.org 20Description: read/write 21 Helps to control the dump collect feature from userspace. 22 Setting 1 to this file enables the system to collect the 23 dump and 0 to disable it. 24User: Kdump service 25 26What: /sys/kernel/fadump/release_mem 27Date: Dec 2019 28Contact: linuxppc-dev@lists.ozlabs.org 29Description: write only 30 This is a special sysfs file and only available when 31 the system is booted to capture the vmcore using FADump. 32 It is used to release the memory reserved by FADump to 33 save the crash dump. 34