1*d418b19fSSourabh JainWhat: /sys/kernel/fadump/* 2*d418b19fSSourabh JainDate: Dec 2019 3*d418b19fSSourabh JainContact: linuxppc-dev@lists.ozlabs.org 4*d418b19fSSourabh JainDescription: 5*d418b19fSSourabh Jain The /sys/kernel/fadump/* is a collection of FADump sysfs 6*d418b19fSSourabh Jain file provide information about the configuration status 7*d418b19fSSourabh Jain of Firmware Assisted Dump (FADump). 8*d418b19fSSourabh Jain 9*d418b19fSSourabh JainWhat: /sys/kernel/fadump/enabled 10*d418b19fSSourabh JainDate: Dec 2019 11*d418b19fSSourabh JainContact: linuxppc-dev@lists.ozlabs.org 12*d418b19fSSourabh JainDescription: read only 13*d418b19fSSourabh Jain Primarily used to identify whether the FADump is enabled in 14*d418b19fSSourabh Jain the kernel or not. 15*d418b19fSSourabh JainUser: Kdump service 16*d418b19fSSourabh Jain 17*d418b19fSSourabh JainWhat: /sys/kernel/fadump/registered 18*d418b19fSSourabh JainDate: Dec 2019 19*d418b19fSSourabh JainContact: linuxppc-dev@lists.ozlabs.org 20*d418b19fSSourabh JainDescription: read/write 21*d418b19fSSourabh Jain Helps to control the dump collect feature from userspace. 22*d418b19fSSourabh Jain Setting 1 to this file enables the system to collect the 23*d418b19fSSourabh Jain dump and 0 to disable it. 24*d418b19fSSourabh JainUser: Kdump service 25*d418b19fSSourabh Jain 26*d418b19fSSourabh JainWhat: /sys/kernel/fadump/release_mem 27*d418b19fSSourabh JainDate: Dec 2019 28*d418b19fSSourabh JainContact: linuxppc-dev@lists.ozlabs.org 29*d418b19fSSourabh JainDescription: write only 30*d418b19fSSourabh Jain This is a special sysfs file and only available when 31*d418b19fSSourabh Jain the system is booted to capture the vmcore using FADump. 32*d418b19fSSourabh Jain It is used to release the memory reserved by FADump to 33*d418b19fSSourabh Jain save the crash dump. 34