linux-kernel - Re: [tip:sched/core] sched/core: Document that RT task priorities are 1...99

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Message-ID: <20190416093634.GS11158@hirez.programming.kicks-ass.net>
Date:   Tue, 16 Apr 2019 11:36:34 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     bigeasy@...utronix.de, hpa@...or.com, mingo@...nel.org,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        tglx@...utronix.de, john.ogness@...utronix.de
Cc:     linux-tip-commits@...r.kernel.org
Subject: Re: [tip:sched/core] sched/core: Document that RT task priorities
 are 1...99

On Tue, Apr 16, 2019 at 01:13:11AM -0700, tip-bot for Sebastian Andrzej Siewior wrote:
> Commit-ID:  37a8f8590f307db8f8cfa62dfd82b3fc0978607c
> Gitweb:     https://git.kernel.org/tip/37a8f8590f307db8f8cfa62dfd82b3fc0978607c
> Author:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> AuthorDate: Wed, 3 Apr 2019 23:08:21 +0200
> Committer:  Ingo Molnar <mingo@...nel.org>
> CommitDate: Tue, 16 Apr 2019 10:06:08 +0200
> 
> sched/core: Document that RT task priorities are 1...99
> 
> John identified three files which claim that RT task priorities start at
> zero. As far as I understand, 0 is used for DL and has nothing to do
> wihich RT priorities as identified by the RT policy.

DL is -1, 0 is still very much FIFO/FF