Re: [PATCH v3 1/2] cpu/smt: add a notifier to notify the SMT changes

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To: Wenyou Yang <WenYou.Yang@xxxxxxx>
Subject: Re: [PATCH v3 1/2] cpu/smt: add a notifier to notify the SMT changes
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Wed, 29 Mar 2023 09:10:14 +0200
Cc: evan.quan@xxxxxxx, kunliu13@xxxxxxx, ying.li@xxxxxxx, Xinhui.Pan@xxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, amd-gfx@xxxxxxxxxxxxxxxxxxxxx, jpoimboe@xxxxxxxxxx, kim.phillips@xxxxxxx, gpiccoli@xxxxxxxxxx, mario.limonciello@xxxxxxx, alexander.deucher@xxxxxxx, tglx@xxxxxxxxxxxxx, bp@xxxxxxx, christian.koenig@xxxxxxx, richardqi.liang@xxxxxxx, weiyuan2@xxxxxxx
In-reply-to: <20230329015149.870132-2-WenYou.Yang@amd.com>
References: <20230329015149.870132-1-WenYou.Yang@amd.com> <20230329015149.870132-2-WenYou.Yang@amd.com>

On Wed, Mar 29, 2023 at 09:51:48AM +0800, Wenyou Yang wrote:
> Add the notifier chain to notify the cpu SMT status changes
> 

Why!?!? What's the purpose of all this? IIRC this doesn't trigger if you
manually disable all the siblings. And because you didn't tell us why
you need this I can't tell you if that matters or not :/

Follow-Ups:
- RE: [PATCH v3 1/2] cpu/smt: add a notifier to notify the SMT changes
  - From: Yang, WenYou

References:
- [PATCH v3 0/2] send message to pmfw when SMT changes
  - From: Wenyou Yang
- [PATCH v3 1/2] cpu/smt: add a notifier to notify the SMT changes
  - From: Wenyou Yang

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