linux-kernel - Re: [PATCH 1/2] x86/mce: Pack boolean MCE boot flags into a structure

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Message-ID: <503B99C7.3000503@linux.vnet.ibm.com>
Date:	Mon, 27 Aug 2012 21:31:11 +0530
From:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:	Borislav Petkov <bp@...64.org>
CC:	tony.luck@...el.com, andi@...stfloor.org,
	gong.chen@...ux.intel.com, ananth@...ibm.com,
	masbock@...ux.vnet.ibm.com, x86@...nel.org,
	linux-kernel@...r.kernel.org, lcm@...ibm.com, mingo@...hat.com,
	tglx@...utronix.de, linux-edac@...r.kernel.org
Subject: Re: [PATCH 1/2] x86/mce: Pack boolean MCE boot flags into a structure

On 08/27/2012 09:17 PM, Borislav Petkov wrote:
> On Mon, Aug 27, 2012 at 09:05:46PM +0530, Naveen N. Rao wrote:
>>>> +
>>>> +extern struct mce_boot_flags mce_boot_flags;
>>>
>>> Why do we need that extern thing?
>>
>> So that this is visible across mce.c and mce_intel.c?
>
> Ok. But if you move the struct to mce-internal.h and since both .c files
> include it, we shouldn't need that extern, right?

I'm not sure I understand. I think we still need it. This is not about 
the structure, but the variable itself. extern allows mce_boot_flags 
_variable_ accessible from mce_intel.c.


Thanks,
Naveen

>
> I think that'll be the most optimal placement for now.
>
> Thanks.
>

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