On 2/23/2022 1:48 PM, Michael Baum wrote:
The "tx_db_nc" devarg forces doorbell register mapping to non-cached region eliminating the extra write memory barrier. This argument was used in creating the UAR for Tx and thus affected its performance.Recently [1] its use has been extended to all UAR creation in all mlx5 drivers, and now its name is no longer so accurate. This patch changes its name to "sq_db_nc" to suit any send queue that uses it. The old name will still work for backward compatibility. [1] commit 5dfa003db53f ("common/mlx5: fix post doorbell barrier") Signed-off-by: Michael Baum<[email protected]> Reviewed-by: Raslan Darawsheh<[email protected]> Acked-by: Viacheslav Ovsiienko<[email protected]> --- doc/guides/nics/mlx5.rst | 34 ++----------------- doc/guides/platform/mlx5.rst | 39 ++++++++++++++++++++++ drivers/common/mlx5/linux/mlx5_common_os.c | 2 +- drivers/common/mlx5/mlx5_common.c | 31 ++++++++++++----- drivers/common/mlx5/mlx5_common_defs.h | 8 ++--- drivers/net/mlx5/linux/mlx5_verbs.c | 2 +- drivers/net/mlx5/mlx5_devx.c | 2 +- 7 files changed, 72 insertions(+), 46 deletions(-)
Hi Michael, This is not a document patch to update the parameter name, patch actually changes the parameter name in the code and documents it, updating it as: net/mlx5: update doorbell mapping parameter name
