Re: [PATCH v18 1/3] proc: add /proc/<pid>/arch_status

[Li, Aubrey]

On 2019/5/24 11:18, Andrew Morton wrote:
> On Thu, 25 Apr 2019 22:32:17 +0800 Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx> wrote:
> 
>> The architecture specific information of the running processes
>> could be useful to the userland. Add /proc/<pid>/arch_status
>> interface support to examine process architecture specific
>> information externally.
> 
> I'll give this an
> 
> Acked-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Thanks!

> 
> from a procfs POV and shall let the x86 maintainers worry about it.
> 
> I must say I'm a bit surprised that we don't already provide some form
> of per-process CPU-specific info anywhere in procfs.  Something to
> piggy-back this onto.  But I can't find such a thing.
> 
> I assume we've already discussed why this is a new procfs file rather
> than merely a new line in /proc/<pid>/status.  If so, please add the
> reasoning to the changelog.  If not, please discuss now ;)
>

Andy and Thomas may want to give more comments. The discussion was that
we don't want /proc/PID/status to be different on different architectures.
It would be better to separate the arch staff into its own file /proc/PID/
arch_status and make sure that everything in it is namespaced.

Thanks,
-Aubrey