Re: [RFC v2 83/83] Sysfs support.

Andiry Xu
2018-03-23T00:31:16Z

On Thu, Mar 22, 2018 at 8:00 AM, David Sterba <dsterba@suse.cz> wrote:
> On Sat, Mar 10, 2018 at 10:19:04AM -0800, Andiry Xu wrote:
>> From: Andiry Xu <jix024@cs.ucsd.edu>
>>
>> Sysfs support allows user to get/post information of running NOVA instance.
>> After mount, NOVA creates four entries under proc directory
>> /proc/fs/nova/pmem#/:
>>
>> timing_stats IO_stats allocator gc
>>
>> Show NOVA file operation timing statistics:
>> cat /proc/fs/NOVA/pmem#/timing_stats
>>
>> Clear timing statistics:
>> echo 1 > /proc/fs/NOVA/pmem#/timing_stats
>>
>> Show NOVA I/O statistics:
>> cat /proc/fs/NOVA/pmem#/IO_stats
>>
>> Clear I/O statistics:
>> echo 1 > /proc/fs/NOVA/pmem#/IO_stats
>>
>> Show NOVA allocator information:
>> cat /proc/fs/NOVA/pmem#/allocator
>>
>> Manual garbage collection:
>> echo #inode_number > /proc/fs/NOVA/pmem#/gc
>
> IIRC no new entries should be added to /proc, /sys is supposed to be
> used. I can't find it documented though, so you'd better check with
> sysfs people.

Thanks. I will try to switch to sysfs.

Thanks,
Andiry