linux-kernel - Re: [PATCH V2 3/4] vmbus: add per-channel sysfs info

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Message-ID: <20170918135955.GD21077@kroah.com>
Date:   Mon, 18 Sep 2017 15:59:55 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     kys@...rosoft.com
Cc:     linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
        olaf@...fle.de, apw@...onical.com, vkuznets@...hat.com,
        jasowang@...hat.com, leann.ogasawara@...onical.com,
        marcelo.cerri@...onical.com, sthemmin@...rosoft.com
Subject: Re: [PATCH V2 3/4] vmbus: add per-channel sysfs info

On Sun, Sep 17, 2017 at 08:54:18PM -0700, kys@...hange.microsoft.com wrote:
> From: Stephen Hemminger <stephen@...workplumber.org>
> 
> This extends existing vmbus related sysfs structure to provide per-channel
> state information. This is useful when diagnosing issues with multiple
> queues in networking and storage.
> 
> The existing sysfs only displayed information about the primary
> channel. The one place it reported multiple channels was the
> channel_vp_mapping file which violated the sysfs convention
> of one value per file.
> 
> Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> ---
>  Documentation/ABI/stable/sysfs-bus-vmbus |  56 ++++++++++
>  drivers/hv/channel_mgmt.c                |  10 +-
>  drivers/hv/hyperv_vmbus.h                |   2 +
>  drivers/hv/vmbus_drv.c                   | 185 +++++++++++++++++++++++++++++--
>  include/linux/hyperv.h                   |   6 +
>  5 files changed, 246 insertions(+), 13 deletions(-)

Feels like a new feature to me, and not needed in 4.14-final.

thanks,

greg k-h