ixgbe: Allocate driver resources per NUMA node

The default policy for the current driver is to do all its memory
allocation on whatever processor is running insmod/modprobe.  This
is less than optimal.

This driver's default mode of operation will be to use each node for each
subsequent transmit/receive queue.  The most efficient allocation will be
to then have the interrupts bound in such a way as to match up the
interrupt of the queue to the cpu where its memory was allocated.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 55a319e..33b79e8 100644 (file)
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -399,6 +399,8 @@ struct ixgbe_adapter {
        u32 wol;
        u16 eeprom_version;
 
+       int node;
+
        /* SR-IOV */
        DECLARE_BITMAP(active_vfs, IXGBE_MAX_VF_FUNCTIONS);
        unsigned int num_vfs;

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 1ec3cbd..87e1aa5 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3946,7 +3946,11 @@ static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
        }
 
        for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
-               q_vector = kzalloc(sizeof(struct ixgbe_q_vector), GFP_KERNEL);
+               q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
+                                       GFP_KERNEL, adapter->node);
+               if (!q_vector)
+                       q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
+                                          GFP_KERNEL);
                if (!q_vector)
                        goto err_out;
                q_vector->adapter = adapter;
@@ -4246,6 +4250,9 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
        /* enable rx csum by default */
        adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
 
+       /* get assigned NUMA node */
+       adapter->node = dev_to_node(&pdev->dev);
+
        set_bit(__IXGBE_DOWN, &adapter->state);
 
        return 0;
@@ -4265,7 +4272,9 @@ int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
        int size;
 
        size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
-       tx_ring->tx_buffer_info = vmalloc(size);
+       tx_ring->tx_buffer_info = vmalloc_node(size, adapter->node);
+       if (!tx_ring->tx_buffer_info)
+               tx_ring->tx_buffer_info = vmalloc(size);
        if (!tx_ring->tx_buffer_info)
                goto err;
        memset(tx_ring->tx_buffer_info, 0, size);
@@ -4305,8 +4314,15 @@ err:
 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
 {
        int i, err = 0;
+       int orig_node = adapter->node;
 
        for (i = 0; i < adapter->num_tx_queues; i++) {
+               if (orig_node == -1) {
+                       int cur_node = next_online_node(adapter->node);
+                       if (cur_node == MAX_NUMNODES)
+                               cur_node = first_online_node;
+                       adapter->node = cur_node;
+               }
                err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]);
                if (!err)
                        continue;
@@ -4314,6 +4330,9 @@ static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
                break;
        }
 
+       /* reset the node back to its starting value */
+       adapter->node = orig_node;
+
        return err;
 }
 
@@ -4331,7 +4350,9 @@ int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
        int size;
 
        size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
-       rx_ring->rx_buffer_info = vmalloc(size);
+       rx_ring->rx_buffer_info = vmalloc_node(size, adapter->node);
+       if (!rx_ring->rx_buffer_info)
+               rx_ring->rx_buffer_info = vmalloc(size);
        if (!rx_ring->rx_buffer_info) {
                DPRINTK(PROBE, ERR,
                        "vmalloc allocation failed for the rx desc ring\n");
@@ -4375,8 +4396,15 @@ alloc_failed:
 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
 {
        int i, err = 0;
+       int orig_node = adapter->node;
 
        for (i = 0; i < adapter->num_rx_queues; i++) {
+               if (orig_node == -1) {
+                       int cur_node = next_online_node(adapter->node);
+                       if (cur_node == MAX_NUMNODES)
+                               cur_node = first_online_node;
+                       adapter->node = cur_node;
+               }
                err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]);
                if (!err)
                        continue;
@@ -4384,6 +4412,9 @@ static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
                break;
        }
 
+       /* reset the node back to its starting value */
+       adapter->node = orig_node;
+
        return err;
 }