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

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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>
This commit is contained in:
Marek Olšák 2014-03-02 00:56:18 +01:00 • committed by Christian König
parent bda72d58a2
commit 67e8e3f970
6 changed files with 65 additions and 3 deletions
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3
include/uapi/drm/radeon_drm.h
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@ -1004,6 +1004,9 @@ struct drm_radeon_cs {
#define RADEON_INFO_VCE_FW_VERSION 0x1b
/* version of VCE feedback */
#define RADEON_INFO_VCE_FB_VERSION 0x1c
#define RADEON_INFO_NUM_BYTES_MOVED 0x1d
#define RADEON_INFO_VRAM_USAGE 0x1e
#define RADEON_INFO_GTT_USAGE 0x1f
struct drm_radeon_info {