Revert "net/mlx4_en: Use affinity hint"

This reverts commit 70a640d0.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/infiniband/hw/mlx4/main.c

@@ -1897,7 +1897,7 @@ static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
 				 i, j, dev->pdev->bus->name);
 			/* Set IRQ for specific name (per ring) */
 			if (mlx4_assign_eq(dev, name, NULL,
-					   &ibdev->eq_table[eq], NULL)) {
+					   &ibdev->eq_table[eq])) {
 				/* Use legacy (same as mlx4_en driver) */
 				pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
 				ibdev->eq_table[eq] =

drivers/net/ethernet/mellanox/mlx4/en_cq.c

@@ -118,15 +118,11 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
 	if (cq->is_tx == RX) {
 		if (mdev->dev->caps.comp_pool) {
 			if (!cq->vector) {
-				struct mlx4_en_rx_ring *ring =
-					priv->rx_ring[cq->ring];
-
 				sprintf(name, "%s-%d", priv->dev->name,
 					cq->ring);
 				/* Set IRQ for specific name (per ring) */
 				if (mlx4_assign_eq(mdev->dev, name, rmap,
-						   &cq->vector,
-						   ring->affinity_mask)) {
+						   &cq->vector)) {
 					cq->vector = (cq->ring + 1 + priv->port)
 					    % mdev->dev->caps.num_comp_vectors;
 					mlx4_warn(mdev, "Failed assigning an EQ to %s, falling back to legacy EQ's\n",

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

@@ -1526,32 +1526,6 @@ static void mlx4_en_linkstate(struct work_struct *work)
 	mutex_unlock(&mdev->state_lock);
 }
 
-static void mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
-{
-	struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
-	int numa_node = priv->mdev->dev->numa_node;
-
-	if (numa_node == -1)
-		return;
-
-	if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) {
-		en_err(priv, "Failed to allocate core mask\n");
-		return;
-	}
-
-	if (cpumask_set_cpu_local_first(ring_idx, numa_node,
-					ring->affinity_mask)) {
-		en_err(priv, "Failed setting affinity hint\n");
-		free_cpumask_var(ring->affinity_mask);
-		ring->affinity_mask = NULL;
-	}
-}
-
-static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
-{
-	free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
-	priv->rx_ring[ring_idx]->affinity_mask = NULL;
-}
 
 int mlx4_en_start_port(struct net_device *dev)
 {
@@ -1593,8 +1567,6 @@ int mlx4_en_start_port(struct net_device *dev)
 
 		mlx4_en_cq_init_lock(cq);
 
-		mlx4_en_init_affinity_hint(priv, i);
-
 		err = mlx4_en_activate_cq(priv, cq, i);
 		if (err) {
 			en_err(priv, "Failed activating Rx CQ\n");
@@ -1875,8 +1847,6 @@ void mlx4_en_stop_port(struct net_device *dev, int detach)
 			msleep(1);
 		mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
 		mlx4_en_deactivate_cq(priv, cq);
-
-		mlx4_en_free_affinity_hint(priv, i);
 	}
 }
 

drivers/net/ethernet/mellanox/mlx4/eq.c

@@ -1376,7 +1376,7 @@ int mlx4_test_interrupts(struct mlx4_dev *dev)
 EXPORT_SYMBOL(mlx4_test_interrupts);
 
 int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
-		   int *vector, cpumask_var_t cpu_hint_mask)
+		   int *vector)
 {
 
 	struct mlx4_priv *priv = mlx4_priv(dev);
@@ -1411,15 +1411,6 @@ int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
 			}
 			mlx4_assign_irq_notifier(priv, dev,
 						 priv->eq_table.eq[vec].irq);
-			if (cpu_hint_mask) {
-				err = irq_set_affinity_hint(
-						priv->eq_table.eq[vec].irq,
-						cpu_hint_mask);
-				if (err) {
-					mlx4_warn(dev, "Failed setting affinity hint\n");
-					/*we dont want to break here*/
-				}
-			}
 
 			eq_set_ci(&priv->eq_table.eq[vec], 1);
 		}
@@ -1450,8 +1441,6 @@ void mlx4_release_eq(struct mlx4_dev *dev, int vec)
 			irq_set_affinity_notifier(
 				priv->eq_table.eq[vec].irq,
 				NULL);
-			irq_set_affinity_hint(priv->eq_table.eq[vec].irq,
-					      NULL);
 			free_irq(priv->eq_table.eq[vec].irq,
 				 &priv->eq_table.eq[vec]);
 			priv->msix_ctl.pool_bm &= ~(1ULL << i);

drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

@@ -313,7 +313,6 @@ struct mlx4_en_rx_ring {
 	unsigned long csum_ok;
 	unsigned long csum_none;
 	int hwtstamp_rx_filter;
-	cpumask_var_t affinity_mask;
 };
 
 struct mlx4_en_cq {

include/linux/mlx4/device.h

@@ -1161,7 +1161,7 @@ int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr);
 int mlx4_SYNC_TPT(struct mlx4_dev *dev);
 int mlx4_test_interrupts(struct mlx4_dev *dev);
 int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
-		   int *vector, cpumask_t *cpu_hint_mask);
+		   int *vector);
 void mlx4_release_eq(struct mlx4_dev *dev, int vec);
 
 int mlx4_get_phys_port_id(struct mlx4_dev *dev);