diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/dev.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/dev.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index a9dbc28f6b97..a62f4b6a21a5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c @@ -71,6 +71,16 @@ void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) if (dev_ctx->context) { spin_lock_irq(&priv->ctx_lock); list_add_tail(&dev_ctx->list, &priv->ctx_list); +#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING + if (dev_ctx->intf->pfault) { + if (priv->pfault) { + mlx5_core_err(dev, "multiple page fault handlers not supported"); + } else { + priv->pfault_ctx = dev_ctx->context; + priv->pfault = dev_ctx->intf->pfault; + } + } +#endif spin_unlock_irq(&priv->ctx_lock); } else { kfree(dev_ctx); @@ -97,6 +107,15 @@ void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv) if (!dev_ctx) return; +#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING + spin_lock_irq(&priv->ctx_lock); + if (priv->pfault == dev_ctx->intf->pfault) + priv->pfault = NULL; + spin_unlock_irq(&priv->ctx_lock); + + synchronize_srcu(&priv->pfault_srcu); +#endif + spin_lock_irq(&priv->ctx_lock); list_del(&dev_ctx->list); spin_unlock_irq(&priv->ctx_lock); @@ -329,6 +348,20 @@ void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, spin_unlock_irqrestore(&priv->ctx_lock, flags); } +#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING +void mlx5_core_page_fault(struct mlx5_core_dev *dev, + struct mlx5_pagefault *pfault) +{ + struct mlx5_priv *priv = &dev->priv; + int srcu_idx; + + srcu_idx = srcu_read_lock(&priv->pfault_srcu); + if (priv->pfault) + priv->pfault(dev, priv->pfault_ctx, pfault); + srcu_read_unlock(&priv->pfault_srcu, srcu_idx); +} +#endif + void mlx5_dev_list_lock(void) { mutex_lock(&mlx5_intf_mutex); |