[Intel-gfx] [PATCH] [v2] drm/i915: Expose LLC size to user space

[Chad Versace]

On 07/11/2013 11:52 AM, Ben Widawsky wrote:
> The algorithm/information was originally written by Chad, though I
> changed the control flow, and I think his original code had a couple of
> bugs, though I didn't look very hard before rewriting. That could have
> also been different interpretations of the spec.
>
> I've tested this on two platforms, and it seems to perform how I want.
>
> With this patch is a small tool for igt to query the size. This can be
> used as a reference for DRI clients wishing to query the information.
>
> v2: Update name of the SDM location (Bryan)
> Dissent: Use a new param instead of reusing HAS_LLC param (Chris, Chad)
> Fix unicode multiply symbol (Ben)
>
> CC: Chad Versace <chad.versace at linux.intel.com>
> CC: Bryan Bell <bryan.j.bell at intel.com>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> ---
>   drivers/gpu/drm/i915/i915_dma.c |  3 +++
>   drivers/gpu/drm/i915/i915_drv.h |  2 ++
>   drivers/gpu/drm/i915/i915_gem.c | 55 +++++++++++++++++++++++++++++++++++++++++
>   include/uapi/drm/i915_drm.h     |  1 +
>   4 files changed, 61 insertions(+)

As long as this is tested and returns the same as L3 in /proc/cpuinfo, this patch is
Reviewed-by: Chad Versace <chad.versace at linux.intel.com>