linux-kernel - Re: [PATCH 09/17] sched/core: Add support for nohz

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Message-ID: <0f9ed7ce-3839-4d2b-98b3-25cc4045aa22@amd.com>
Date: Fri, 21 Nov 2025 08:46:39 +0530
From: K Prateek Nayak <kprateek.nayak@....com>
To: Shrikanth Hegde <sshegde@...ux.ibm.com>, <linux-kernel@...r.kernel.org>,
	<linuxppc-dev@...ts.ozlabs.org>
CC: <mingo@...hat.com>, <peterz@...radead.org>, <juri.lelli@...hat.com>,
	<vincent.guittot@...aro.org>, <tglx@...utronix.de>, <yury.norov@...il.com>,
	<maddy@...ux.ibm.com>, <srikar@...ux.ibm.com>, <gregkh@...uxfoundation.org>,
	<pbonzini@...hat.com>, <seanjc@...gle.com>, <vschneid@...hat.com>,
	<iii@...ux.ibm.com>, <huschle@...ux.ibm.com>, <rostedt@...dmis.org>,
	<dietmar.eggemann@....com>, <christophe.leroy@...roup.eu>
Subject: Re: [PATCH 09/17] sched/core: Add support for nohz_full CPUs

Hello Shrikanth,

On 11/19/2025 6:14 PM, Shrikanth Hegde wrote:
> Enable tick on nohz full CPU when it is marked as paravirt.
> If there in no CFS/RT running there, disable the tick to save the power.

Wouldn't the task be pinned if it is running on a nohz CPU?
We don't push out pinned tasks so this seems unnecessary.
Am I missing something?

-- 
Thanks and Regards,
Prateek