linux-kernel - Re: [PATCH v2 03/10] drm/client: Use actual bpp when allocating frame buffers

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Date:   Wed, 9 Mar 2022 13:51:57 +0100
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>, Helge Deller <deller@....de>
Cc:     dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/10] drm/client: Use actual bpp when allocating frame
 buffers

On 3/7/22 21:52, Geert Uytterhoeven wrote:
> When allocating a frame buffer, the number of bits per pixel needed is
> derived from the deprecated drm_format_info.cpp[] field.  While this
> works for formats using less than 8 bits per pixel, it does lead to a
> large overallocation.
> 
> Reduce memory consumption by using the actual number of bits per pixel
> instead.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
> ---

Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>

-- 
Best regards,

Javier Martinez Canillas
Linux Engineering
Red Hat