linux-kernel - Re: [PATCH v3 2/2] timers: Don't search for expired timers while TIMER

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Date:   Thu, 1 Mar 2018 12:37:49 -0600
From:   Haris Okanovic <haris.okanovic@...com>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, julia.cartwright@...com, gratian.crisan@...com,
        anna-maria@...utronix.de
Subject: Re: [PATCH v3 2/2] timers: Don't search for expired timers while
 TIMER_SOFTIRQ is scheduled

On 03/01/2018 10:47 AM, Sebastian Andrzej Siewior wrote:
> On 2018-03-01 09:49:59 [-0600], Haris Okanovic wrote:
>> *bump* Has anyone looked into this?
> 
> I'm lost.
> It entered the kernel in v4.9.9-rt6 and left in v4.9.30-rt20 once we
> figured out that there is something wrong with it.

It was added back into 4.9 at some point after v4.9.30-rt20. I see an 
older version in v4.9.68-rt60, for example, hence my original email. It 
was dropped sometime thereafter, presumably because it no longer cleanly 
applies. I don't see it in v4.14.20-rt17, for example.

> Is it still in a RT tree somewhere?

I can't draw an exact timeline, since rt history is hard to follow. I 
don't think so.

> Is there a newer patch pending on your side?

Not yet. The latest version on patchwork is OK, just needs to be rebased 
post-4.9. I'll post a new version when I get a chance to build and 
retest it.

> 
> Sebastian
>