linux-kernel - Re: r8169: disable ASPM during NAPI poll locking changes --> BUG: Invalid wait context --> PREEMPT

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Date:   Mon, 22 May 2023 19:12:08 +0200
From:   Mike Galbraith <efault@....de>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: r8169: disable ASPM during NAPI poll locking changes --> BUG:
 Invalid wait context --> PREEMPT_RT pain

On Mon, 2023-05-22 at 19:02 +0200, Mike Galbraith wrote:
> That 160us was with the nouveau left on by mistake, the worst ftrace
> recorded with me beating up box was 77us (and it inflates).

Grr, ftraced 160us was with the GPU mucking up box's RT performance,
ftraced 77us was without GPU.  Box was very busy in both cases.

	-Mike