From: Zoltan Kiss <zoltan.kiss@citrix.com>
Date: Tue, 8 Jul 2014 18:49:14 +0000 (+0100)
Subject: xen-netback: Adding debugfs "io_ring_qX" files
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~149^2~200
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f51de24356e49e4dcb5095e87717065580912120;p=pandora-kernel.git

xen-netback: Adding debugfs "io_ring_qX" files

This patch adds debugfs capabilities to netback. There used to be a similar
patch floating around for classic kernel, but it used procfs. It is based on a
very similar blkback patch.
It creates xen-netback/[vifname]/io_ring_q[queueno] files, reading them output
various ring variables etc. Writing "kick" into it imitates an interrupt
happened, it can be useful to check whether the ring is just stalled due to a
missed interrupt.

Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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