tree 9bbf509dfde9cd4a11fb35aca45a2ac3f35c7b69
parent bda72d58a20120aee1f78eb17d7eddb955d6696b
author Marek Olšák <marek.olsak@amd.com> 1393718178 +0100
committer Christian König <christian.koenig@amd.com> 1393840459 +0100

drm/radeon: track memory statistics about VRAM and GTT usage and buffer moves v2

The statistics are:
- VRAM usage in bytes
- GTT usage in bytes
- number of bytes moved by TTM

The last one is actually a counter, so you need to sample it before and after
command submission and take the difference.

This is useful for finding performance bottlenecks. Userspace queries are
also added.

v2: use atomic64_t

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>