linux-kernel - Re: [patch 00/12] rseq: Implement time slice extension mechanism

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Message-ID: <fb66953f-8d03-4026-a33b-f414db776f37@amd.com>
Date: Thu, 11 Sep 2025 08:33:41 +0530
From: K Prateek Nayak <kprateek.nayak@....com>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
CC: Peter Zilstra <peterz@...radead.org>, Mathieu Desnoyers
	<mathieu.desnoyers@...icios.com>, "Paul E. McKenney" <paulmck@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>, Jonathan Corbet <corbet@....net>, Prakash
 Sangappa <prakash.sangappa@...cle.com>, Madadi Vineeth Reddy
	<vineethr@...ux.ibm.com>, Steven Rostedt <rostedt@...dmis.org>, Sebastian
 Andrzej Siewior <bigeasy@...utronix.de>, Arnd Bergmann <arnd@...db.de>,
	<linux-arch@...r.kernel.org>
Subject: Re: [patch 00/12] rseq: Implement time slice extension mechanism

Hello Thomas,

On 9/10/2025 8:20 PM, Thomas Gleixner wrote:
> On Wed, Sep 10 2025 at 16:58, K. Prateek Nayak wrote:
>> On 9/9/2025 4:29 AM, Thomas Gleixner wrote:
>>> For your convenience all of it is also available as a conglomerate from
>>> git:
>>>
>>>     git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git rseq/slice
>>
>> Apart from a couple of nit picks, I couldn't spot anything out of place
>> and the overall approach looks solid. Please feel free to include:
>>
>> Reviewed-by: K Prateek Nayak <kprateek.nayak@....com>
> 
> Thanks a lot for going through it and testing.
> 
> Do you have a real workload or a mockup at hand, which benefits
> from that slice extension functionality?

Not at the moment but we did have some interest for this feature
internally. Give me a week and I'll let you know if they had found a
use-case / have a prototype to test this.

In the meantime, Prakash should have a test bench that he used to
test his early RFC
https://lore.kernel.org/lkml/20241113000126.967713-1-prakash.sangappa@oracle.com/

-- 
Thanks and Regards,
Prateek