linux-kernel - Re: [PATCH 05/12] sparc: Replace cpu_up/down with device

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Message-Id: <20191030.123324.2200344682917452634.davem@davemloft.net>
Date:   Wed, 30 Oct 2019 12:33:24 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     qais.yousef@....com
Cc:     tglx@...utronix.de, gregkh@...uxfoundation.org,
        bhelgaas@...gle.com, rafael.j.wysocki@...el.com,
        sakari.ailus@...ux.intel.com, sparclinux@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/12] sparc: Replace cpu_up/down with
 device_online/offline

From: Qais Yousef <qais.yousef@....com>
Date: Wed, 30 Oct 2019 15:38:30 +0000

> The core device API performs extra housekeeping bits that are missing
> from directly calling cpu_up/down.
> 
> See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and
> serialization during LPM") for an example description of what might go
> wrong.
> 
> This also prepares to make cpu_up/down a private interface for anything
> but the cpu subsystem.
> 
> Signed-off-by: Qais Yousef <qais.yousef@....com>

Acked-by: David S. Miller <davem@...emloft.net>