Re: [PATCH v2 0/3] livepatch: Introduce force sysfs attribute

From: Petr Mladek
Date: Wed Aug 16 2017 - 09:31:23 EST


On Thu 2017-08-10 12:48:12, Miroslav Benes wrote:
> Currently, livepatch gradually migrate the system from an unpatched to a
> patched state (or vice versa). Each task drops its TIF_PATCH_PENDING
> itself when crossing the kernel/user space boundary or it is cleared
> using the stack checking approach. If there is a task which sleeps on a
> patched function, the whole transition can get stuck indefinitely.
>
> TODO:
> Now there is a sysfs attribute called "force", which provides two
> functionalities, "signal" and "force" (previously "unmark"). I haven't
> managed to come up with better names. Proposals are welcome. On the
> other hand I do not mind it much.

What about calling the attribute?

transition-speedup
transition-urge

In each case, I would make it more clear that the attribute
is related to the transition attribute of each patch.

Best Regards,
Petr