Revert "net/mlx4_en: Use affinity hint"

This reverts commit 70a640d0dae3a9b1b222ce673eb5d92c263ddd61.

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 4 insertions, 50 deletions

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 58b1f239ac2b..199c7896f081 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/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] =
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
index ea2cd72e5368..636963db598a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/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",
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 05d135572abc..58209bd0c94c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/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);
         }
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index f91659e5fa13..d954ec1eac17 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/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);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 0e15295bedd6..b5db1bf361dc 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/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 {
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b9b70e00e3c1..ca38871a585c 100644
--- a/include/linux/mlx4/device.h
+++ b/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);