> On Aug 28, 2024, at 10:23, Wardenjohn <zhangwar...@gmail.com> wrote:
>
> One system may contains more than one livepatch module. We can see
> which patch is enabled. If some patches applied to one system
> modifing the same function, livepatch will use the function enabled
> on top of the function stack. However, we can not excatly know
> which function of which patch is now enabling.
>
> This patch introduce one sysfs attribute of "using" to klp_func.
> For example, if there are serval patches make changes to function
> "meminfo_proc_show", the attribute "enabled" of all the patch is 1.
> With this attribute, we can easily know the version enabling belongs
> to which patch.
>
> The "using" is set as three state. 0 is disabled, it means that this
> version of function is not used. 1 is running, it means that this
> version of function is now running. -1 is unknown, it means that
> this version of function is under transition, some task is still
> chaning their running version of this function.
>
> cat /sys/kernel/livepatch/<patch1>/<object1>/<function1,sympos>/using -> 0
> means that the function1 of patch1 is disabled.
>
> cat /sys/kernel/livepatch/<patchN>/<object1>/<function1,sympos>/using -> 1
> means that the function1 of patchN is enabled.
>
> cat /sys/kernel/livepatch/<patchN>/<object1>/<function1,sympos>/using -> -1
> means that the function1 of patchN is under transition and unknown.
>
> Signed-off-by: Wardenjohn <zhangwar...@gmail.com>
>
>
Hi, Maintainers.
How about this patch? I am looking for your suggestions.
Regards,
Wardenjohn.
