Re: [PATCH v11 0/8] x86/resctrl: mba_MBps enhancement

Borislav Petkov
2024-12-09T17:58:05Z

On Mon, Dec 09, 2024 at 05:53:12PM +0000, Luck, Tony wrote:
> v6.13-rc1 may give a lockdep splat when mounting /sys/fs/resctrl
> (known CONFIG options to trigger this are:
>
> PROVE_LOCKING && SELINUX && (EXT4 || BTRFS)
>
> but there may be others).
>
> These resctrl patches are not directly dependent on the fixes that
> went into -rc2:
>
> 22465bbac53c blk-mq: move cpuhp callback registering out of q->sysfs_lock
> 4bf485a7db5d blk-mq: register cpuhp callback after hctx is added to xarray table
>
> they work ok on top of -rc1 (as long as you ignore the lockdep splat).

Thanks for the details.

> I see you already have one patch in TIP x86/cache on top of v6.13-rc1
>
> Your choice whether to rebase that to -rc2 and then apply my series. It
> might make testing smoother.

Yah, I can rebase. Not worth the hassle of dealing with bogus reports.

Thx.

--
Regards/Gruss,
Boris.