Re: [PATCH V2 4/4] Drivers: hv: vmbus: Expose per-channel event counters events counters

[Greg KH]

On Sun, Sep 17, 2017 at 08:54:19PM -0700, kys@xxxxxxxxxxxxxxxxxxxxxx wrote:
> From: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
> 
> When investigating performance, it is useful to be able to look at
> the number of host and guest events per-channel. This is equivalent
> to per-device interrupt statistics.
> 
> Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
> Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> ---
>  Documentation/ABI/stable/sysfs-bus-vmbus | 14 ++++++++++++++
>  drivers/hv/connection.c                  |  2 ++
>  drivers/hv/vmbus_drv.c                   | 18 ++++++++++++++++++
>  include/linux/hyperv.h                   |  4 ++++
>  4 files changed, 38 insertions(+)

How is this a fix and not just a new feature?