linux-kernel - Re: [PATCH 1/4] kernel.h: Implement DIV_ROUND_CLOSEST

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Date:	Fri, 20 Mar 2015 18:19:26 +0000
From:	Emil Velikov <emil.l.velikov@...il.com>
To:	Javi Merino <javi.merino@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
	ML dri-devel <dri-devel@...ts.freedesktop.org>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Guenter Roeck <linux@...ck-us.net>,
	"Darrick J. Wong" <djwong@...ibm.com>
Subject: Re: [PATCH 1/4] kernel.h: Implement DIV_ROUND_CLOSEST_ULL

On 20 March 2015 at 11:14, Javi Merino <javi.merino@....com> wrote:
> We have grown a number of different implementations of
> DIV_ROUND_CLOSEST_ULL throughout the kernel.  Move the i915 one to
> kernel.h so that it can be reused.
>
> Cc: Daniel Vetter <daniel.vetter@...el.com>
> Cc: Jani Nikula <jani.nikula@...ux.intel.com>
> Cc: David Airlie <airlied@...ux.ie>
> Cc: Darrick J. Wong <djwong@...ibm.com>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Javi Merino <javi.merino@....com>
> ---
>  drivers/gpu/drm/i915/intel_drv.h |  4 +---
>  include/linux/kernel.h           | 11 +++++++++++
>  2 files changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index eef79ccd0b7c..346e28fdd7dd 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -28,6 +28,7 @@
>  #include <linux/async.h>
>  #include <linux/i2c.h>
>  #include <linux/hdmi.h>
> +#include <linux/kernel.h>
Hi Javi,

Small suggestion - can we include the header only where needed ?
i915/intel_panel.c seems to be the only user of DIV_ROUND_CLOSEST
which will need an update.

Somewhat trivial pick but it will prevent ~40 unnecessary dives in kernel.h.

Cheers,
Emil
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