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| author | Dave Jiang <dave.jiang@intel.com> | 2020-08-28 15:12:10 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-09-03 12:40:12 +0530 |
| commit | d7aad5550eca50370e3a1471b46281d03af0699e (patch) | |
| tree | 86f2cefe46536f65d9adf8035b11a02f4c8ad3ec /Documentation | |
| parent | b0ef489e2a9cfcb64e4a20f308023afaea9db8d3 (diff) | |
| download | linux-d7aad5550eca50370e3a1471b46281d03af0699e.tar.gz | |
dmaengine: idxd: add support for configurable max wq xfer size
Add sysfs attribute max_xfer_size to wq in order to allow the max xfer size configured on a per wq basis. Add support code to configure the valid user input on wq enable. This is a performance tuning parameter. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159865265404.29141.3049399618578194052.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-driver-dma-idxd | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd index 1af9c4175213..452f353b4748 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-idxd +++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd @@ -170,6 +170,13 @@ Contact: dmaengine@vger.kernel.org Description: The number of entries in this work queue that may be filled via a limited portal. +What: /sys/bus/dsa/devices/wq<m>.<n>/max_transfer_size +Date: Aug 28, 2020 +KernelVersion: 5.10.0 +Contact: dmaengine@vger.kernel.org +Description: The max transfer sized for this workqueue. Cannot exceed device + max transfer size. Configurable parameter. + What: /sys/bus/dsa/devices/engine<m>.<n>/group_id Date: Oct 25, 2019 KernelVersion: 5.6.0 |