linux-kernel - RE: [PATCH v6 1/2] sparc: fix a building error reported by kbuild

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Date:   Sat, 10 Dec 2016 08:40:02 +0000
From:   "Gonglei (Arei)" <arei.gonglei@...wei.com>
To:     Sam Ravnborg <sam@...nborg.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "qemu-devel@...gnu.org" <qemu-devel@...gnu.org>,
        "virtio-dev@...ts.oasis-open.org" <virtio-dev@...ts.oasis-open.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        Luonengjun <luonengjun@...wei.com>,
        "mst@...hat.com" <mst@...hat.com>,
        "stefanha@...hat.com" <stefanha@...hat.com>,
        "Huangweidong (C)" <weidong.huang@...wei.com>,
        "Wubin (H)" <wu.wubin@...wei.com>,
        "xin.zeng@...el.com" <xin.zeng@...el.com>,
        Claudio Fontana <Claudio.Fontana@...wei.com>,
        "herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>,
        "pasic@...ux.vnet.ibm.com" <pasic@...ux.vnet.ibm.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "Zhoujian (jay, Euler)" <jianjay.zhou@...wei.com>,
        "Hanweidong (Randy)" <hanweidong@...wei.com>,
        "arei.gonglei@...mail.com" <arei.gonglei@...mail.com>,
        "cornelia.huck@...ibm.com" <cornelia.huck@...ibm.com>,
        "Xuquan (Quan Xu)" <xuquan8@...wei.com>,
        longpeng <longpeng2@...wei.com>,
        "Wanzongshun (Vincent)" <wanzongshun@...wei.com>,
        "sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>
Subject: RE: [PATCH v6 1/2] sparc: fix a building error reported by kbuild





Regards,
-Gonglei


> -----Original Message-----
> From: linux-crypto-owner@...r.kernel.org
> [mailto:linux-crypto-owner@...r.kernel.org] On Behalf Of Sam Ravnborg
> Sent: Saturday, December 10, 2016 5:59 AM
> To: Gonglei (Arei)
> Cc: linux-kernel@...r.kernel.org; qemu-devel@...gnu.org;
> virtio-dev@...ts.oasis-open.org; virtualization@...ts.linux-foundation.org;
> linux-crypto@...r.kernel.org; Luonengjun; mst@...hat.com;
> stefanha@...hat.com; Huangweidong (C); Wubin (H); xin.zeng@...el.com;
> Claudio Fontana; herbert@...dor.apana.org.au; pasic@...ux.vnet.ibm.com;
> davem@...emloft.net; Zhoujian (jay, Euler); Hanweidong (Randy);
> arei.gonglei@...mail.com; cornelia.huck@...ibm.com; Xuquan (Quan Xu);
> longpeng; Wanzongshun (Vincent); sparclinux@...r.kernel.org
> Subject: Re: [PATCH v6 1/2] sparc: fix a building error reported by kbuild
> 
> Hi Gonglei.
> 
> On Thu, Dec 08, 2016 at 12:37:08PM +0800, Gonglei wrote:
> > >> arch/sparc/include/asm/topology_64.h:44:44:
> > error: implicit declaration of function 'cpu_data'
> > [-Werror=implicit-function-declaration]
> >
> >  #define topology_physical_package_id(cpu) (cpu_data(cpu).proc_id)
> >                                                ^
> > Let's include cpudata.h in topology_64.h.
> >
> > Cc: Sam Ravnborg <sam@...nborg.org>
> > Cc: David S. Miller <davem@...emloft.net>
> > Cc: sparclinux@...r.kernel.org
> > Suggested-by: Sam Ravnborg <sam@...nborg.org>
> > Signed-off-by: Gonglei <arei.gonglei@...wei.com>
> Acked-by: Sam Ravnborg <sam@...nborg.org>
> 
Thanks.

> > ---
> >  arch/sparc/include/asm/topology_64.h | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/sparc/include/asm/topology_64.h
> b/arch/sparc/include/asm/topology_64.h
> > index 7b4898a..2255430 100644
> > --- a/arch/sparc/include/asm/topology_64.h
> > +++ b/arch/sparc/include/asm/topology_64.h
> > @@ -4,6 +4,7 @@
> >  #ifdef CONFIG_NUMA
> >
> >  #include <asm/mmzone.h>
> > +#include <asm/cpudata.h>
> 
> Nitpick - if you are going to resend this patch, 

It depends on the maintainer's thought. :)

> then please order the two includes in alphabetic order.
> 
> For two includes this looks like bikeshedding, but when we add
> more having them in a defined arder prevents merge conflicts.
> And makes it readable too.
> 
> We also sometimes order the includes with the longest lines topmost,
> and lines with the ame length are ordered alphabetically.
> But this is not seen so often.
> 

Regards,
-Gonglei