Re: [PATCH v13 1/3] /proc/pid/status: Add support for architecture specific output

[Li, Aubrey]

On 2019/4/7 5:41, Alexey Dobriyan wrote:
> On Fri, Apr 05, 2019 at 09:32:35PM +0200, Thomas Gleixner wrote:
>>> +/* Add support for architecture specific output in /proc/pid/status */
>>> +extern void arch_proc_pid_status(struct seq_file *m, struct task_struct *task);
>      ^^^^^^
> 
> Unnecessary extern.
> 
The linkage is default extern, but with this functions and variables
can be treated the same way.

Is it mandatory not to use it explicitly? ./script/checkpatch.pl did
not report this.

Thanks,
-Aubrey