linux-kernel - Re: [PATCH 5/6 v5] CPU probe/release files

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Date:	Fri, 18 Dec 2009 18:29:31 +0100
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Nathan Fontenot <nfont@...tin.ibm.com>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6 v5] CPU probe/release files

Nathan Fontenot <nfont@...tin.ibm.com> writes:

> Andreas Schwab wrote:
>> Nathan Fontenot <nfont@...tin.ibm.com> writes:
>>
>>> Index: powerpc/arch/powerpc/Kconfig
>>> ===================================================================
>>> --- powerpc.orig/arch/powerpc/Kconfig	2009-10-28 15:21:47.000000000 -0500
>>> +++ powerpc/arch/powerpc/Kconfig	2009-10-28 15:21:53.000000000 -0500
>>> @@ -320,6 +320,10 @@
>>>   	  Say N if you are unsure.
>>>  +config ARCH_CPU_PROBE_RELEASE
>>> +	def_bool y
>>> +	depends on HOTPLUG_CPU
>>> +
>>
>> That does not work.
>>
>> drivers/built-in.o: In function `.store_online':
>> cpu.c:(.ref.text+0xf5c): undefined reference to `.cpu_hotplug_driver_lock'
>> cpu.c:(.ref.text+0xfc8): undefined reference to `.cpu_hotplug_driver_unlock'
>> make: *** [.tmp_vmlinux1] Error 1
>>
>> cpu_hotplug_driver_lock is only defined on pseries, but HOTPLUG_CPU is
>> also defined on pmac.
>
> These two routines should be defined as a no-op if CONFIG_ARCH_CPU_PROBE_RELEASE
> is not defined in linux/cpu.h.

??? CONFIG_ARCH_CPU_PROBE_RELEASE *is* defined.

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
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