From aa32f4c0bcce7dac55bf2639f4a6cf37c5c96934 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Mon, 16 Dec 2013 05:45:37 -0300
Subject: [PATCH] [media] v4l2: move tracepoints to video_usercopy

The (d)qbuf ioctls were traced in the low-level v4l2 ioctl function. The
trace was outside the serialization lock, so that can affect the usefulness
of the timing. In addition, the __user pointer was expected instead of a
proper kernel pointer.

By moving the tracepoints to video_usercopy we ensure that the trace calls
use the correct kernel pointer, and that it happens right after the ioctl
call to the driver, so certainly inside the serialization lock.

In addition, we only trace if the call was successful.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---
Reading git-format-patch failed