linux-kernel - Re: [patch 1/1] Kconfig: Introduce CONFIG_PREEMPT

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Message-ID: <e245e8ac-d55d-89c8-424a-432e0481cd2a@redhat.com>
Date:   Tue, 16 Jul 2019 22:18:00 +0200
From:   Daniel Bristot de Oliveira <bristot@...hat.com>
To:     Clark Williams <williams@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Linus Torvalds <torvalds@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        Christoph Hellwig <hch@....de>, Tejun Heo <tj@...nel.org>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Daniel Wagner <wagi@...om.org>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Clark Williams <clark.williams@...il.com>,
        Julia Cartwright <julia@...com>,
        Marc Zyngier <marc.zyngier@....com>,
        Frederic Weisbecker <frederic@...nel.org>
Subject: Re: [patch 1/1] Kconfig: Introduce CONFIG_PREEMPT_RT

On 16/07/2019 22:10, Clark Williams wrote:
> On Mon, 15 Jul 2019 17:04:03 +0200
> Thomas Gleixner <tglx@...utronix.de> wrote:
> 
>> Add a new entry to the preemption menu which enables the real-time support
>> for the kernel. The choice is only enabled when an architecture supports
>> it.
>>
>> It selects PREEMPT as the RT features depend on it. To achieve that the
>> existing PREEMPT choice is renamed to PREEMPT_LL which select PREEMPT as
>> well.
>>
>> No functional change.
>>
>> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Excited to see this Thomas. Now I can start planning to build from a single tree
> rather than an RT tree off to the side of RHEL :)
> 
> Acked-by: Clark Williams <williams@...hat.com>
> 

yeah! We (Red Hat) are committed with maintaining and testing the PREEMPT RT
mainstream in the long term. Including the development of more tests and formal
verification for it!

Acked-by: Daniel Bristot de Oliveira <bristot@...hat.com>

Thanks!
-- Daniel