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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1961771
Title:
Enable CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT in Jammy
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
The CONFIG_WATCHDOG_HRTIMER_PRETIMEOUT option allows to support
pretimeout actions on device drivers without the hardware capability
to support it. It was introduced in Linux 5.14:
https://github.com/torvalds/linux/commit/7b7d2fdc8c3e3f9fdb3558d674e1eeddc16c7d9e
It is now enabled in Debian:
https://salsa.debian.org/kernel-
team/linux/-/commit/d09d223632f0505c3a82dc77d6f70e120002a221
More information about watchdog pretimeouts:
https://elinux.org/Tests:Watchdog-Pretimeout
We are adding support for this feature in systemd:
https://github.com/systemd/systemd/pull/19970
More specifically, if it was enabled in Jammy, we could add an
upstream autopkgtest case using qemu to cover this functionality,
which is not tested at all currently, when we rebase our autopkgtest
image from Focal to Jammy.
[Test Plan]
To verify that this is working, simply boot Qemu with '-device
i6300esb,id=watchdog0 -watchdog-action reset' then check the available
governors:
modprobe pretimeout_noop
cat /sys/class/watchdog/watchdog0/pretimeout_available_governors
[Where problems could occur]
The feature is disabled by default, as the modules have to be manually
loaded, so chance of side effects for general users is very low.
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