linux-kernel - Re: A problem with percpu variable cpu

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Date:	Tue, 21 Feb 2012 22:29:11 +0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Tao Jiang <jiangtao.jit@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: A problem with percpu variable cpu_number

On 02/21/2012 08:41 PM, Tao Jiang wrote:
> Hi Cong Wang:
>
> I read the file vmlinux.lds.S in arch/x86/kernel
> section .data..percpu is between .init.data and .init.end
> Is that means these percpu variables will be freed after init?

% grep -e __init_begin -e __init_end -e __per_cpu_start -e __per_cpu_end 
/boot/System.map
0000000000000000 D __per_cpu_start
0000000000014bc0 D __per_cpu_end
ffffffff81cf3000 D __init_begin
ffffffff81dfc000 R __init_end
% objdump -d -j .data..percpu vmlinux | grep cpu_number
000000000000dc38 <cpu_number>:
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