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| author | Matthew Brost <matthew.brost@intel.com> | 2026-04-10 13:59:28 -0700 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2026-04-12 20:51:14 -0700 |
| commit | 2e0cd372b89758545ddfaa0085cf030d473afb7e (patch) | |
| tree | e66dce06475963f1d6865c2047b1fcbb53cbc569 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 07f123f33dec59cfada43d19888d319a43b299cb (diff) | |
drm/pagemap: Use dma-map IOVA alloc, link, and sync API for DRM pagemap
The dma-map IOVA alloc, link, and sync APIs perform significantly better
than dma-map / dma-unmap, as they avoid costly IOMMU synchronizations.
This difference is especially noticeable when mapping a 2MB region in
4KB pages.
Use the IOVA alloc, link, and sync APIs for DRM pagemap, which create DMA
mappings between the CPU and GPU for copying data.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patch.msgid.link/20260410205929.3914474-5-matthew.brost@intel.com
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions