diff options
| author | Maor Gottlieb <maorg@nvidia.com> | 2025-07-09 00:16:26 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-09 19:47:43 -0700 |
| commit | d980f371b134d5d66d082161171a6be613975dfc (patch) | |
| tree | 4b7b973c5b3c998d1acee8186baada6186141daa | |
| parent | c0ca344d796cf00c169f63f09eea0f4905778be1 (diff) | |
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: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1752009387-13300-5-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/wc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wc.c b/drivers/net/ethernet/mellanox/mlx5/core/wc.c index 740b719e7072..2f0316616fa4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/wc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/wc.c @@ -378,6 +378,9 @@ err_create_cq: 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) |