diff options
| author |   Dmitry Osipenko <digetx@gmail.com> | 2018-12-12 23:38:48 +0300 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2019-01-16 13:54:09 +0100 |
| commit | 2fc0ac180d0f160cdd5fc69407ca7eb47b3eff99 (patch) | |
| tree | 2dcb9cde64712c9cbfe08e1493c19108ea35d6f1 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | iommu: Introduce iotlb_sync_map callback (diff) | |
| download | wireguard-linux-2fc0ac180d0f160cdd5fc69407ca7eb47b3eff99.tar.xz wireguard-linux-2fc0ac180d0f160cdd5fc69407ca7eb47b3eff99.zip | |
iommu/tegra: gart: Optimize mapping / unmapping performance
Currently GART writes one page entry at a time. More optimal would be to
aggregate the writes and flush BUS buffer in the end, this gives map/unmap
10-40% performance boost (depending on size of mapping) in comparison to
flushing after each page entry update.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions