linux-kernel - Re: [PATCH] kernel: context_tracking: use extern function instead of static inline function for user

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Date:	Wed, 23 Oct 2013 19:19:37 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	Paul McKenney <paulmck@...ux.vnet.ibm.com>, khilman@...aro.org,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kernel: context_tracking: use extern function instead
 of static inline function for user_enter/exit()

On 10/23/2013 07:11 PM, Frederic Weisbecker wrote:
> On Wed, Oct 23, 2013 at 06:38:35PM +0800, Chen Gang wrote:
>> The related assemble code can not find the static inline function. The
>> related commit "ad65782 context_tracking: Optimize main APIs off case
>> with static key" causes this issue.
>>
>> The related error (for arm, with allmodconfig):
>>
>>     LD      init/built-in.o
>>   arch/arm/kernel/built-in.o: In function `ret_fast_syscall':
>>   arch/arm/kernel/entry-common.S:42: undefined reference to `user_enter'
>>   arch/arm/kernel/built-in.o: In function `no_work_pending':
>>   arch/arm/kernel/entry-common.S:77: undefined reference to `user_enter'
>>   arch/arm/kernel/built-in.o: In function `vector_swi':
>>   arch/arm/kernel/entry-common.S:376: undefined reference to `user_exit'
>>   arch/arm/kernel/built-in.o: In function `__dabt_usr':
>>   arch/arm/kernel/entry-armv.S:365: undefined reference to `user_exit'
>>   arch/arm/kernel/built-in.o: In function `__irq_usr':
>>   arch/arm/kernel/entry-armv.S:375: undefined reference to `user_exit'
>>   arch/arm/kernel/built-in.o: In function `__und_usr':
>>   arch/arm/kernel/entry-armv.S:388: undefined reference to `user_exit'
>>   arch/arm/kernel/built-in.o: In function `__pabt_usr':
>>   arch/arm/kernel/entry-armv.S:662: undefined reference to `user_exit'
>>
>>
>> Signed-off-by: Chen Gang <gang.chen@...anux.com>
> 
> Doesn't 0c06a5d4b13cd66c833805a0d1db76b977944aac
> ("arm: Fix build error with context tracking calls") fix the issue for you?
> Or may be it's another problem I missed?
> 

Oh, yes it is, it is my fault, I still use original next-20130927 tree
(I really need reference another next tree or torvalds tree).  :-)

Next, I will/should reference another next tree, at least.

Thanks again.

> Thanks.
> 
> 

-- 
Chen Gang
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