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| author | Maciej Fijalkowski <[email protected]> | 2019-02-13 18:51:07 +0000 |
|---|---|---|
| committer | Jeff Kirsher <[email protected]> | 2019-03-25 17:10:39 +0000 |
| commit | a65f71fed5add2ec5713fcc605842f5f2dff22a3 (patch) | |
| tree | d858cb4580d985e171757963fd67d8c1c6bedd6b /drivers/net/ethernet/intel/ice/ice_sched.c | |
| parent | ice: Limit the ice_add_rx_frag to frag addition (diff) | |
| download | kernel-a65f71fed5add2ec5713fcc605842f5f2dff22a3.tar.gz kernel-a65f71fed5add2ec5713fcc605842f5f2dff22a3.zip | |
ice: map Rx buffer pages with DMA attributes
Provide DMA_ATTR_WEAK_ORDERING and DMA_ATTR_SKIP_CPU_SYNC attributes to
the DMA API during the mapping operations on Rx side. With this change
the non-x86 platforms will be able to sync only with what is being used
(2k buffer) instead of entire page. This should yield a slight
performance improvement.
Furthermore, DMA unmap may destroy the changes that were made to the
buffer by CPU when platform is not a x86 one. DMA_ATTR_SKIP_CPU_SYNC
attribute usage fixes this issue.
Also add a sync_single_for_device call during the Rx buffer assignment,
to make sure that the cache lines are cleared before device attempting
to write to the buffer.
Signed-off-by: Maciej Fijalkowski <[email protected]>
Signed-off-by: Anirudh Venkataramanan <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_sched.c')
0 files changed, 0 insertions, 0 deletions