linux-kernel - Re: [PATCH 5.10-rt+] drm/i915/gt: transform irq_disable into local

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Message-ID: <20211130151045.idygiysuatdhwjd4@linutronix.de>
Date:   Tue, 30 Nov 2021 16:10:45 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Joe Korty <joe.korty@...current-rt.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Clark Williams <williams@...hat.com>,
        Jun Miao <jun.miao@...driver.com>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5.10-rt+] drm/i915/gt: transform irq_disable into
 local_lock.

On 2021-11-22 14:50:48 [-0500], Joe Korty wrote:
> 
> Hi Steve, Sebastian,

H Joe,

> I will keep poking at it from time to time, see if I can
> get the issue to come back.

The issue shouldn't come back. I'm curious however if the bunch of i915
patchesm that I have in the latest RT, cause any problems with or with
PREEMPT_RT enabled. That is latency wise or usage wise (like lagging/
juddering playback wobbling GUI or anything like that).

> Joe

Sebastian