linux-kernel - Re: [PATCH] drm/i915: make array hw_engine

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Message-ID: <157046537209.5063.10118308844290609426@skylake-alporthouse-com>
Date:   Mon, 07 Oct 2019 17:22:52 +0100
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     Colin King <colin.king@...onical.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: make array hw_engine_mask static, makes object smaller

Quoting Colin King (2019-10-07 16:41:51)
> From: Colin Ian King <colin.king@...onical.com>
> 
> Don't populate the array hw_engine_mask on the stack but instead make it
> static. Makes the object code smaller by 316 bytes.
> 
> Before:
>    text    data     bss     dec     hex filename
>   34004    4388     320   38712    9738 gpu/drm/i915/gt/intel_reset.o
> 
> After:
>    text    data     bss     dec     hex filename
>   33528    4548     320   38396    95fc gpu/drm/i915/gt/intel_reset.o
> 
> (gcc version 9.2.1, amd64)
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
Reviewed-by: Chris Wilson <chris@...is-wilson.co.uk>
-Chris