linux-kernel - Re: [PATCH 1/1] kernel/rcu/tree.c: remove duplicate extern definition

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Message-ID: <CAJhHMCCX=DdCpDsakJVhRat7-iieqT2_65vfxBjy7C-bSPc8VQ@mail.gmail.com>
Date:	Mon, 14 Apr 2014 12:27:47 -0400
From:	Pranith Kumar <pranith@...ech.edu>
To:	Paul McKenney <paulmck@...ux.vnet.ibm.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] kernel/rcu/tree.c: remove duplicate extern definition

On Mon, Apr 14, 2014 at 12:19 PM, Pranith Kumar <pranith@...ech.edu> wrote:
> Hi Paul,
>
> On Mon, Apr 14, 2014 at 12:07 PM, Paul E. McKenney
> <paulmck@...ux.vnet.ibm.com> wrote:
>> On Sun, Apr 13, 2014 at 05:53:53PM -0400, Pranith Kumar wrote:
>>> remove duplicate definition of extern resched_cpu
>>>
>>> Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
>>
>> Hello, Pranith,
>>
>> When I apply this patch I get the following:
>>
>> /home/paulmck/public_git/linux-rcu/kernel/rcu/tree.c: In function ‘rcu_implicit_dynticks_qs’:
>> /home/paulmck/public_git/linux-rcu/kernel/rcu/tree.c:895:3: error: implicit declaration of function ‘resched_cpu’ [-Werror=implicit-function-declaration]
>> /home/paulmck/public_git/linux-rcu/kernel/rcu/tree.c: At top level:
>> /home/paulmck/public_git/linux-rcu/kernel/rcu/tree.c:1009:13: warning: conflicting types for ‘resched_cpu’ [enabled by default]
>> /home/paulmck/public_git/linux-rcu/kernel/rcu/tree.c:895:3: note: previous implicit declaration of ‘resched_cpu’ was here
>>
>> This failed in under number of different Kconfig setups, the .config file
>> for one of them is attached.
>>
>> So this declaration really is needed.  Just out of curiosity, what led
>> you to believe that it could be removed?
>>

Your attached config has the following:

Linux/x86 3.14.0-rc3 Kernel Configuration

The patch is against 3.15.0-rc1 (the latest at this time). May be that
is the reason?

-- 
Pranith
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