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| author | Xiang Chen <chenxiang66@hisilicon.com> | 2021-03-18 12:29:30 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-04-02 17:41:08 +0300 |
| commit | ca947482b0b30443e6da1f0f5ba7244e34a4f65a (patch) | |
| tree | 4aa88cbca829f7daa3ceaf7384a4b81ab69729ca /Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml | |
| parent | 42e4eefb089f12ea900062ecdcc7ca10c3423a05 (diff) | |
| download | linux-ca947482b0b30443e6da1f0f5ba7244e34a4f65a.tar.xz | |
dma-mapping: benchmark: Add support for multi-pages map/unmap
Currently it only support one page map/unmap once a time for dma-map
benchmark, but there are some other scenaries which need to support for
multi-page map/unmap: for those multi-pages interfaces such as
dma_alloc_coherent() and dma_map_sg(), the time spent on multi-pages
map/unmap is not the time of a single page * npages (not linear) as it
may use block description instead of page description when it is satified
with the size such as 2M/1G, and also it can send a single TLB invalidation
command to invalidate multi-pages instead of multi-times when RIL is
enabled (which will short the time of unmap). So it is necessary to add
support for multi-pages map/unmap.
Add a parameter "-g" to support multi-pages map/unmap.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Acked-by: Barry Song <song.bao.hua@hisilicon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/nvidia,tegra186-dspk.yaml')
0 files changed, 0 insertions, 0 deletions