[Mesa-dev] [PATCH] gallium/radeon: add a new HUD query for the number of mapped buffers

[Nicolai Hähnle]

On 24.01.2017 07:39, Michel Dänzer wrote:
> On 24/01/17 05:44 AM, Samuel Pitoiset wrote:
>> Useful when debugging applications which map too much VRAM.
>
> Is the number of mapped buffers really useful, as opposed to the total
> size of buffer mappings? Even if it was the latter though, it doesn't
> show which mappings are for BOs in VRAM vs GTT, does it? Also, even the
> total size of mappings of BOs currently in VRAM doesn't directly reflect
> the pressure on the CPU visible part of VRAM — only the BOs which are
> actively being accessed by the CPU contribute to that.

Thanks, I didn't know that.

However, the number of mapped buffers is still useful information 
because we used to run into Linux's limit on the number of simultaneous 
mmap()ings before :)

I think the patch is fine:

Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>