Commit d980f371 authored by Maor Gottlieb's avatar Maor Gottlieb Committed by Jakub Kicinski
Browse files

net/mlx5: Warn when write combining is not supported 



Warn if write combining is not supported, as it can impact latency.
Add the warning message to be printed only when the driver actually
run the test and detect unsupported state, rather than when
inheriting parent's result for SFs.

Signed-off-by: default avatarMaor Gottlieb <maorg@nvidia.com>
Reviewed-by: default avatarMichael Guralnik <michaelgur@nvidia.com>
Signed-off-by: default avatarTariq Toukan <tariqt@nvidia.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1752009387-13300-5-git-send-email-tariqt@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent c0ca344d

drivers/net/ethernet/mellanox/mlx5/core/wc.c

+3 −0
Original line number Diff line number Diff line
@@ -378,6 +378,9 @@ static void mlx5_core_test_wc(struct mlx5_core_dev *mdev) 
	mlx5_free_bfreg(mdev, &sq->bfreg);

err_alloc_bfreg:

	kfree(sq);



	if (mdev->wc_state == MLX5_WC_STATE_UNSUPPORTED)

		mlx5_core_warn(mdev, "Write combining is not supported\n");

}



bool mlx5_wc_support_get(struct mlx5_core_dev *mdev)