linux-kernel - Re: [RFC PATCH 00/86] Make the kernel preemptible

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Date:   Wed, 8 Nov 2023 10:53:27 +0100
From:   Daniel Bristot de Oliveira <bristot@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ankur Arora <ankur.a.arora@...cle.com>
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de,
        torvalds@...ux-foundation.org, paulmck@...nel.org,
        linux-mm@...ck.org, x86@...nel.org, akpm@...ux-foundation.org,
        luto@...nel.org, bp@...en8.de, dave.hansen@...ux.intel.com,
        hpa@...or.com, mingo@...hat.com, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, willy@...radead.org, mgorman@...e.de,
        jon.grimm@....com, bharata@....com, raghavendra.kt@....com,
        boris.ostrovsky@...cle.com, konrad.wilk@...cle.com,
        jgross@...e.com, andrew.cooper3@...rix.com, mingo@...nel.org,
        mathieu.desnoyers@...icios.com, geert@...ux-m68k.org,
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        mattst88@...il.com, krypton@...ich-teichert.org,
        rostedt@...dmis.org, David.Laight@...lab.com, richard@....at,
        mjguzik@...il.com
Subject: Re: [RFC PATCH 00/86] Make the kernel preemptible

On 11/8/23 09:51, Peter Zijlstra wrote:
> On Tue, Nov 07, 2023 at 01:56:46PM -0800, Ankur Arora wrote:
>> Hi,
>>
>> We have two models of preemption: voluntary and full 
> 3, also none (RT is not actually a preemption model).
> 
>> (and RT which is
>> a fuller form of full preemption.)
> It is not in fact a different preemption model, it is the same full
> preemption, the difference with RT is that it makes a lot more stuff
> preemptible, but the fundamental preemption model is the same -- full.

+1

-- Daniel