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| author |   Sourabh Jain <sourabhjain@linux.ibm.com> | 2019-12-11 21:39:07 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-02-19 21:07:09 +1100 |
| commit | d418b19f34ed0c751a69810080596f7e749595aa (patch) | |
| tree | 179790c6b147ab90588875d6535f9a710b3cfceb /Documentation/ABI/testing/sysfs-kernel-fadump | |
| parent | sysfs: Wrap __compat_only_sysfs_link_entry_to_kobj function to change the symlink name (diff) | |
| download | wireguard-linux-d418b19f34ed0c751a69810080596f7e749595aa.tar.xz wireguard-linux-d418b19f34ed0c751a69810080596f7e749595aa.zip | |
powerpc/fadump: Reorganize /sys/kernel/fadump_* sysfs files
As the number of FADump sysfs files increases it is hard to manage all
of them inside /sys/kernel directory. It's better to have all the
FADump related sysfs files in a dedicated directory
/sys/kernel/fadump. But in order to maintain backward compatibility a
symlink has been added for every sysfs that has moved to new location.
As the FADump sysfs files are now part of a dedicated directory there
is no need to prefix their name with fadump_, hence sysfs file names
are also updated. For example fadump_enabled sysfs file is now
referred as enabled.
Also consolidate ABI documentation for all the FADump sysfs files in a
single file Documentation/ABI/testing/sysfs-kernel-fadump.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Tested-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191211160910.21656-4-sourabhjain@linux.ibm.com
Diffstat (limited to 'Documentation/ABI/testing/sysfs-kernel-fadump')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-fadump | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-fadump b/Documentation/ABI/testing/sysfs-kernel-fadump new file mode 100644 index 000000000000..5d988b919e81 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-fadump @@ -0,0 +1,33 @@ +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. |