linux-kernel - Re: 回复: [PATCH] x86/intel_rdt: use __this_cpu_read in pseudo_lock

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Message-ID: <01aaa72f-f4c8-720d-e51b-df38f200eeaf@intel.com>
Date:   Fri, 30 Jul 2021 07:47:22 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     苏辉(Robert Su) <suhui@...u.com>,
        "fenghua.yu@...el.com" <fenghua.yu@...el.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "x86@...nel.org" <x86@...nel.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 回复: [PATCH] x86/intel_rdt: use __this_cpu_read in pseudo_lock_fn()

Hi,

On 7/30/2021 1:22 AM, 苏辉(Robert Su) wrote:
> Hi, Reinette:
> 
>      There is no issue here, i just think it's better to use __this_cpu_read when
> interrupt disabled.

ok, could you please elaborate why it is better? I do not see a problem 
with the change - I would just like to understand the motivation for it.

Thank you

Reinette