linux-kernel - Re: [PATCH 0/2] arm64: smp: Include smp

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Message-ID: <20190530233427.qbaa76ukbzuuic22@shell.armlinux.org.uk>
Date:   Fri, 31 May 2019 00:34:27 +0100
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     marc.zyngier@....com, Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        open list <linux-kernel@...r.kernel.org>,
        Shaokun Zhang <zhangshaokun@...ilicon.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/2] arm64: smp: Include smp_plat.h from smp.h

On Thu, May 30, 2019 at 04:20:37PM -0700, Florian Fainelli wrote:
> On 5/30/19 4:17 PM, Russell King - ARM Linux admin wrote:
> > On Thu, May 30, 2019 at 04:14:28PM -0700, Florian Fainelli wrote:
> >> On 5/30/19 4:05 PM, Florian Fainelli wrote:
> >>> Hi ARM64 maintainers,
> >>>
> >>> This patch series aims at enabling irq-bcm7038-l1.c on
> >>> ARM64/ARCH_BRCMSTB, this driver makes use of cpu_logical_map[] and in
> >>> order to avoid adding a CONFIG_ARM64 conditional inclusion of
> >>> smp_plat.h, instead smp.h includes smp_plat.h, which is in turn included
> >>> by linux/smp.h.
> >>>
> >>> If you like the approach, I would suggest to carry that through the
> >>> Broadcom ARM64 SoC pull request for 5.3.
> >>
> >> ARM (32-bit) needs the same thing kind of thing so a conditional include
> >> may be appropriate after all...
> > 
> > The whole idea of the smp_plat.h vs smp.h separation is to avoid
> > including lots of arch-private stuff in the rest of the kernel
> > build, thereby exposing arch-private stuff to the world.  I'm be
> > opposed to that.
> 
> I was on the fence, sent it just in case, but ended up doing this:
> 
> https://lore.kernel.org/patchwork/patch/1082410/
> 
> will take patch #2 through the Broadcom ARM64 SoC tree once this patch
> above gets accepted.

Well, there's another alternative: we move just what is required from
smp_plat.h to smp.h.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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