linux-kernel - Re: [RFC v2] [x86]: abort secondary cpu bringup gracefully

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Message-ID: <4FBFCB39.6000101@landley.net>
Date:	Fri, 25 May 2012 13:11:05 -0500
From:	Rob Landley <rob@...dley.net>
To:	Igor Mammedov <imammedo@...hat.com>
CC:	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, luto@....edu,
	suresh.b.siddha@...el.com, avi@...hat.com, a.p.zijlstra@...llo.nl,
	johnstul@...ibm.com, arjan@...ux.intel.com
Subject: Re: [RFC v2] [x86]: abort secondary cpu bringup gracefully

On 05/24/2012 10:41 AM, Igor Mammedov wrote:
> ping for reviewers.
> 
> Please review patch.

I can't hugely comment on the guts of what the patch is doing, but:

>> --- a/arch/x86/kernel/smpboot.c
>> +++ b/arch/x86/kernel/smpboot.c
>> @@ -136,6 +136,10 @@ EXPORT_PER_CPU_SYMBOL(cpu_info);
>>
>>   atomic_t init_deasserted;
>>
>> +#ifdef CONFIG_HOTPLUG_CPU
>> +static void remove_siblinginfo(int cpu);
>> +#endif
>> +

#ifdefs should almost never be in C code, they should be in header
files. You can stub out functions with empty inline versions.  For a
random example, see kernel/smpboot.h

Rob
-- 
GNU/Linux isn't: Linux=GPLv2, GNU=GPLv3+, they can't share code.
Either it's "mere aggregation", or a license violation.  Pick one.
--
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