1*4882a593SmuzhiyunWhat: /sys/kernel/fadump/* 2*4882a593SmuzhiyunDate: Dec 2019 3*4882a593SmuzhiyunContact: linuxppc-dev@lists.ozlabs.org 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun The /sys/kernel/fadump/* is a collection of FADump sysfs 6*4882a593Smuzhiyun file provide information about the configuration status 7*4882a593Smuzhiyun of Firmware Assisted Dump (FADump). 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunWhat: /sys/kernel/fadump/enabled 10*4882a593SmuzhiyunDate: Dec 2019 11*4882a593SmuzhiyunContact: linuxppc-dev@lists.ozlabs.org 12*4882a593SmuzhiyunDescription: read only 13*4882a593Smuzhiyun Primarily used to identify whether the FADump is enabled in 14*4882a593Smuzhiyun the kernel or not. 15*4882a593SmuzhiyunUser: Kdump service 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunWhat: /sys/kernel/fadump/registered 18*4882a593SmuzhiyunDate: Dec 2019 19*4882a593SmuzhiyunContact: linuxppc-dev@lists.ozlabs.org 20*4882a593SmuzhiyunDescription: read/write 21*4882a593Smuzhiyun Helps to control the dump collect feature from userspace. 22*4882a593Smuzhiyun Setting 1 to this file enables the system to collect the 23*4882a593Smuzhiyun dump and 0 to disable it. 24*4882a593SmuzhiyunUser: Kdump service 25*4882a593Smuzhiyun 26*4882a593SmuzhiyunWhat: /sys/kernel/fadump/release_mem 27*4882a593SmuzhiyunDate: Dec 2019 28*4882a593SmuzhiyunContact: linuxppc-dev@lists.ozlabs.org 29*4882a593SmuzhiyunDescription: write only 30*4882a593Smuzhiyun This is a special sysfs file and only available when 31*4882a593Smuzhiyun the system is booted to capture the vmcore using FADump. 32*4882a593Smuzhiyun It is used to release the memory reserved by FADump to 33*4882a593Smuzhiyun save the crash dump. 34*4882a593Smuzhiyun 35*4882a593SmuzhiyunWhat: /sys/kernel/fadump/mem_reserved 36*4882a593SmuzhiyunDate: Dec 2019 37*4882a593SmuzhiyunContact: linuxppc-dev@lists.ozlabs.org 38*4882a593SmuzhiyunDescription: read only 39*4882a593Smuzhiyun Provide information about the amount of memory reserved by 40*4882a593Smuzhiyun FADump to save the crash dump in bytes. 41