RE: [PATCH] sched/fair: fix pick_eevdf to always find the correct se

From: Biju Das
Date: Thu Oct 05 2023 - 11:50:17 EST


Hi Peter Zijlstra,

> Subject: Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct
> se
>
> On Thu, Oct 05, 2023 at 07:31:34AM +0000, Biju Das wrote:
>
> > [ 26.099203] EEVDF scheduling fail, picking leftmost
>
> This, that the problem.. the rest is just noise because printk stinks.
>
> Weirdly have not seen that trigger, and I've been running with this patch
> on for a few days now :/

I agree Original issue is "EEVDF scheduling fail, picking leftmost"
Which is triggering noisy lock warning messages during boot.

2 platforms are affected both ARM platforms(Renesas and Samsung)
Maybe other platforms affected too.

I am happy to test if there is a fix available for this issue.

Cheers,
Biju