From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Thu, 6 Mar 2014 04:19:50 +0000 (+0000)
Subject: btrfs: Add ftrace for btrfs_workqueue
X-Git-Tag: v3.15-rc1~96^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=52483bc26f0e95c91e8fd07f9def588bf89664f8;p=pandora-kernel.git

btrfs: Add ftrace for btrfs_workqueue

Add ftrace for btrfs_workqueue for further workqueue tunning.
This patch needs to applied after the workqueue replace patchset.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
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