linux-kernel - Re: [PATCH] arm64/kernel: Simplify __cpu

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Message-ID: <20200317183209.GG632169@arrakis.emea.arm.com>
Date:   Tue, 17 Mar 2020 18:32:09 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Gavin Shan <gshan@...hat.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        will@...nel.org, maz@...nel.org, mark.rutland@....com,
        shan.gavin@...il.com
Subject: Re: [PATCH] arm64/kernel: Simplify __cpu_up() by bailing out early

On Mon, Mar 02, 2020 at 01:03:40PM +1100, Gavin Shan wrote:
> The function __cpu_up() is invoked to bring up the target CPU through
> the backend, PSCI for example. The nested if statements won't be needed
> if we bail out early on the following two conditions where the status
> won't be checked. The code looks simplified in that case.
> 
>    * Error returned from the backend (e.g. PSCI)
>    * The target CPU has been marked as onlined
> 
> Signed-off-by: Gavin Shan <gshan@...hat.com>

Queued for 5.7. Thanks.

-- 
Catalin