diff options
| author | Yuval Avnery <yuvalav@mellanox.com> | 2019-06-10 23:38:23 +0000 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2019-06-13 10:59:49 -0700 |
| commit | ca390799c2aa03632c294107fa7f647bcbdff428 (patch) | |
| tree | af24f0797ca8addd929b798613e919c9f278c5b6 /drivers/infiniband | |
| parent | 081cc2d7fa5828c8214c41b97352245ca5cc0f58 (diff) | |
net/mlx5: Change interrupt handler to call chain notifier
Multiple EQs may share the same IRQ in subsequent patches.
Instead of calling the IRQ handler directly, the EQ will register
to an atomic chain notfier.
The Linux built-in shared IRQ is not used because it forces the caller
to disable the IRQ and clear affinity before free_irq() can be called.
This patch is the first step in the separation of IRQ and EQ logic.
Signed-off-by: Yuval Avnery <yuvalav@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/odp.c | 10 |
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 40eb8be482e4..a043af7ee366 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -920,6 +920,7 @@ struct mlx5_ib_lb_state { }; struct mlx5_ib_pf_eq { + struct notifier_block irq_nb; struct mlx5_ib_dev *dev; struct mlx5_eq *core; struct work_struct work; diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index 91507a2e9290..ac40a4fd5598 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -1488,9 +1488,11 @@ static void mlx5_ib_eq_pf_process(struct mlx5_ib_pf_eq *eq) mlx5_eq_update_ci(eq->core, cc, 1); } -static irqreturn_t mlx5_ib_eq_pf_int(int irq, void *eq_ptr) +static int mlx5_ib_eq_pf_int(struct notifier_block *nb, unsigned long type, + void *data) { - struct mlx5_ib_pf_eq *eq = eq_ptr; + struct mlx5_ib_pf_eq *eq = + container_of(nb, struct mlx5_ib_pf_eq, irq_nb); unsigned long flags; if (spin_trylock_irqsave(&eq->lock, flags)) { @@ -1553,12 +1555,12 @@ mlx5_ib_create_pf_eq(struct mlx5_ib_dev *dev, struct mlx5_ib_pf_eq *eq) goto err_mempool; } + eq->irq_nb.notifier_call = mlx5_ib_eq_pf_int; param = (struct mlx5_eq_param) { .index = MLX5_EQ_PFAULT_IDX, .mask = 1 << MLX5_EVENT_TYPE_PAGE_FAULT, .nent = MLX5_IB_NUM_PF_EQE, - .context = eq, - .handler = mlx5_ib_eq_pf_int + .nb = &eq->irq_nb, }; eq->core = mlx5_eq_create_generic(dev->mdev, "mlx5_ib_page_fault_eq", ¶m); if (IS_ERR(eq->core)) { |