MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 23:13:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

docs: netconsole: document release feature

Browse Source 
Add documentation explaining the kernel release auto-population feature
in netconsole.

This feature appends kernel version information to the userdata
dictionary in every message sent when enabled via the `release_enabled`
file in the configfs hierarchy.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250314-netcons_release-v1-6-07979c4b86af@debian.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Breno Leitao 2025-03-14 10:58:50 -07:00 committed by Paolo Abeni
parent 4b73dc83ed
commit 56ad890de2
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
Documentation/networking/netconsole.rst
View File

@ -272,6 +272,31 @@ Example::
In this example, the message was generated while "echo" was the current
scheduled process.
Kernel release auto population in userdata
------------------------------------------
Within the netconsole configfs hierarchy, there is a file named `release_enabled`
located in the `userdata` directory. This file controls the kernel release
(version) auto-population feature, which appends the kernel release information
to userdata dictionary in every message sent.
To enable the release auto-population::
echo 1 > /sys/kernel/config/netconsole/target1/userdata/release_enabled
Example::
echo "This is a message" > /dev/kmsg
12,607,22085407756,-;This is a message
release=6.14.0-rc6-01219-g3c027fbd941d
.. note::
This feature provides the same data as the "release prepend" feature.
However, in this case, the release information is appended to the userdata
dictionary rather than being included in the message header.
CPU number auto population in userdata
--------------------------------------