linux-kernel - Re: [patch 04/12] clockevent unbind: use smp_call_func_single

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Date: Wed, 07 Feb 2024 12:55:59 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Marcelo Tosatti <mtosatti@...hat.com>, linux-kernel@...r.kernel.org
Cc: Daniel Bristot de Oliveira <bristot@...nel.org>, Juri Lelli
 <juri.lelli@...hat.com>, Valentin Schneider <vschneid@...hat.com>,
 Frederic Weisbecker <frederic@...nel.org>, Leonardo Bras
 <leobras@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Marcelo
 Tosatti <mtosatti@...hat.com>
Subject: Re: [patch 04/12] clockevent unbind: use smp_call_func_single_fail

On Tue, Feb 06 2024 at 15:49, Marcelo Tosatti wrote:
> Convert clockevents_unbind from smp_call_function_single
> to smp_call_func_single_fail, which will fail in case
> the target CPU is tagged as block interference CPU.

Seriously? This is a root only operation. So if root wants to interfere
then so be it.