Re: [PATCH v1 11/31] x86/resctrl: Move monitor exit work to a restrl exit call

Reinette Chatre
2024-04-11T17:37:33Z

Hi Dave,

On 4/11/2024 7:15 AM, Dave Martin wrote:
> On Mon, Apr 08, 2024 at 08:19:00PM -0700, Reinette Chatre wrote:
>> On 3/21/2024 9:50 AM, James Morse wrote:
>>> rdt_put_mon_l3_config() is called via the architecture's
>>> resctrl_arch_exit() call, and appears to free the rmid_ptrs[]
>>> and closid_num_dirty_rmid[] arrays. In reality this code is marked
>>> __exit, and is removed by the linker as resctl can't be built
>>
>> resctl -> resctrl
>
> Noted, thanks (also, there is "restrl" in the subject line.)

Thank you for catching that.

>
>>
>>> as a module.
>>>
>>> MPAM can make use of this code from its error interrupt handler,
>>> a later patch drops all the __init/__exit annotations.
>>
>> Reminder:
>> https://lore.kernel.org/lkml/85f8756a-23a0-444e-b37d-a7817b600f46@intel.com/
>
> The "Drop __init/__exit on assorted symbols" patch speaks for itself,
> I guess. I think it's probably sufficient for now to comfirm that this
> patch is deliberately not changing the annotations for now.
>
> Does the following work?
>
> --8<--
>
> Since there is no immediate need to change them, leave the __exit
> annotations as-is. This will need to be revisited as and when there is
> a need to call these functions other than at __exit time.
>
> -->8--

Sounds good. I find a big focus on the __init/__exit annotations
distracting. As I understand this has nothing to do with the goal of
this patch, which is to move code from architecture side to filesystem side.

Reinette