Re: [PATCH] rqspinlock: Fix order in raw_res_spin_(un)lock_irq to allow schedule

[Kumar Kartikeya Dwivedi]

On Tue Jun 9, 2026 at 3:04 PM CEST, Gabriele Monaco wrote:
> On Tue, 2026-06-09 at 13:22 +0200, Arnd Bergmann wrote:
>> Should this be Cc:stable@xxxxxxxxxxxxxxx to get backported?
>
> Not sure if the Fixes: is enough to trigger the automation, I rarely
> remember to Cc:stable@xxxxxxxxxxxxxxx and they're usually picked.
>
> In case I guess I'd need to re-submit the patch right?
>
>> Did you see this cause measurable performance problems,
>> or did you find it through inspection?
>
> I noticed it while debugging an ENOMEM issue in the test_maps BPF
> selftest on PREEMPT_RT and this was an obvious cuplrit (irq_work not
> scheduled during a stress run). Turns out the problem is still there
> after this fix though.

I would imagine this to be the least of your problems, I think there's a bunch
of blockers for complete selftests passing with PREEMPT_RT support in BPF.

>
>>
>> > Signed-off-by: Gabriele Monaco <gmonaco@xxxxxxxxxx>
>>
>> Acked-by: Arnd Bergmann <arnd@xxxxxxxx> # asm-generic

The patch makes sense to me as well.

Acked-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>