Re: [BUG report]sparse warnings on DEFINE_PER_CPU() symbols non-static

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On 12/04/2013 11:12 PM, Tejun Heo wrote:
> On Wed, Dec 04, 2013 at 11:26:44AM +0800, Wanlong Gao wrote:
>> Goes away but comes new error:
>>
>> /git/linux/fs/inode.c:74:8: error: symbol 'nr_inodes' redeclared with different type (originally declared at /git/linux/fs/inode.c:74) - different address spaces
>> /git/linux/fs/inode.c:75:8: error: symbol 'nr_unused' redeclared with different type (originally declared at /git/linux/fs/inode.c:75) - different address spaces
>> /git/linux/fs/inode.c:835:8: error: symbol 'last_ino' redeclared with different type (originally declared at /git/linux/fs/inode.c:835) - different address spaces
> 
> Oops, my bad.  How about the following?

It works, thank you.

Tested-by: Wanlong Gao <gaowanlong@xxxxxxxxxxxxxx>

> 
> diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
> index 57e890a..a5fc7d0 100644
> --- a/include/linux/percpu-defs.h
> +++ b/include/linux/percpu-defs.h
> @@ -69,6 +69,7 @@
>  	__PCPU_DUMMY_ATTRS char __pcpu_scope_##name;			\
>  	extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name;		\
>  	__PCPU_DUMMY_ATTRS char __pcpu_unique_##name;			\
> +	extern __PCPU_ATTRS(sec) __typeof__(type) name;			\
>  	__PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES __weak			\
>  	__typeof__(type) name
>  #else
> 

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