diff options
| author | Shay Drory <shayd@nvidia.com> | 2023-10-12 12:27:40 -0700 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2023-10-14 10:16:31 -0700 |
| commit | b430c1b4f63be51dde175a1dd3addba65ca24e2b (patch) | |
| tree | d0426edc7e49d6ecbe54efb8e03e217025571e53 /drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c | |
| parent | e534552c92a44690e48593f9567fe689545ded73 (diff) | |
net/mlx5: Replace global mlx5_intf_lock with HCA devcom component lock
mlx5_intf_lock is used to sync between LAG changes and its slaves
mlx5 core dev aux devices changes, which means every time mlx5 core
dev add/remove aux devices, mlx5 is taking this global lock, even if
LAG functionality isn't supported over the core dev.
This cause a bottleneck when probing VFs/SFs in parallel.
Hence, replace mlx5_intf_lock with HCA devcom component lock, or no
lock if LAG functionality isn't supported.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c index f0b57f97739f..d14459e5c04f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c @@ -943,6 +943,26 @@ static void mlx5_do_bond(struct mlx5_lag *ldev) } } +/* The last mdev to unregister will destroy the workqueue before removing the + * devcom component, and as all the mdevs use the same devcom component we are + * guaranteed that the devcom is valid while the calling work is running. + */ +struct mlx5_devcom_comp_dev *mlx5_lag_get_devcom_comp(struct mlx5_lag *ldev) +{ + struct mlx5_devcom_comp_dev *devcom = NULL; + int i; + + mutex_lock(&ldev->lock); + for (i = 0; i < ldev->ports; i++) { + if (ldev->pf[i].dev) { + devcom = ldev->pf[i].dev->priv.hca_devcom_comp; + break; + } + } + mutex_unlock(&ldev->lock); + return devcom; +} + static void mlx5_queue_bond_work(struct mlx5_lag *ldev, unsigned long delay) { queue_delayed_work(ldev->wq, &ldev->bond_work, delay); @@ -953,9 +973,14 @@ static void mlx5_do_bond_work(struct work_struct *work) struct delayed_work *delayed_work = to_delayed_work(work); struct mlx5_lag *ldev = container_of(delayed_work, struct mlx5_lag, bond_work); + struct mlx5_devcom_comp_dev *devcom; int status; - status = mlx5_dev_list_trylock(); + devcom = mlx5_lag_get_devcom_comp(ldev); + if (!devcom) + return; + + status = mlx5_devcom_comp_trylock(devcom); if (!status) { mlx5_queue_bond_work(ldev, HZ); return; @@ -964,14 +989,14 @@ static void mlx5_do_bond_work(struct work_struct *work) mutex_lock(&ldev->lock); if (ldev->mode_changes_in_progress) { mutex_unlock(&ldev->lock); - mlx5_dev_list_unlock(); + mlx5_devcom_comp_unlock(devcom); mlx5_queue_bond_work(ldev, HZ); return; } mlx5_do_bond(ldev); mutex_unlock(&ldev->lock); - mlx5_dev_list_unlock(); + mlx5_devcom_comp_unlock(devcom); } static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev, @@ -1435,7 +1460,7 @@ void mlx5_lag_disable_change(struct mlx5_core_dev *dev) if (!ldev) return; - mlx5_dev_list_lock(); + mlx5_devcom_comp_lock(dev->priv.hca_devcom_comp); mutex_lock(&ldev->lock); ldev->mode_changes_in_progress++; @@ -1443,7 +1468,7 @@ void mlx5_lag_disable_change(struct mlx5_core_dev *dev) mlx5_disable_lag(ldev); mutex_unlock(&ldev->lock); - mlx5_dev_list_unlock(); + mlx5_devcom_comp_unlock(dev->priv.hca_devcom_comp); } void mlx5_lag_enable_change(struct mlx5_core_dev *dev) |