RE: [PATCH 00/13] hv: clean up dev_attr usage

From: KY Srinivasan
Date: Tue Sep 17 2013 - 14:42:42 EST




> -----Original Message-----
> From: Greg Kroah-Hartman [mailto:gregkh@xxxxxxxxxxxxxxxxxxx]
> Sent: Friday, September 13, 2013 11:33 AM
> To: KY Srinivasan; Haiyang Zhang
> Cc: devel@xxxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: [PATCH 00/13] hv: clean up dev_attr usage
>
> Hi,
>
> Here's a set of 13 patches to get rid of the dev_attrs use in the hv bus
> code, as it will be going away soon. It's _way_ bigger than all other
> conversions I've had to do so far in the kernel, as you were using a
> "multiplexor" function for all of these files.
>
> So, I've broken it up into individual show/store sysfs functions, and
> cleaned up a bunch of debug structures that aren't needed and shouldn't
> be exported to the rest of the kernel.
>
> I've also fixed up some void * usage in the hv core, in patch 07, to
> make things simpler and not so "magic" when dealing with these pages.
> If you could review that one closely to ensure I didn't mess anything
> up, I would appreciate it.
>
> Also, are all of these files really needed for sysfs? They seem to be
> all debugging stuff, shouldn't they go into debugfs if you really
> need/use them anymore?
>
> KY, could you test these out? I don't have access to a hv system at the
> moment. I'll wait for your ack before applying them to any of my trees.

The patches look good and I tested them. The guest comes up and is functional.
I did notice though that the pending state appears to be a signed entity now which was not the
the case before - I see a negative sign when I cat the client/server pending state.

Regards,

K. Y
>
> thanks,
>
> greg k-h

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