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authorYuval Atias <yuvala@mellanox.com>2014-05-25 18:47:27 +0400
committerDavid S. Miller <davem@davemloft.net>2014-06-02 06:16:29 +0400
commit70a640d0dae3a9b1b222ce673eb5d92c263ddd61 (patch)
tree89dbe2c36c695f2e4c79429f4362bc07df2cc1de /drivers/infiniband
parentc8865b64b05b2f4eeefd369373e9c8aeb069e7a1 (diff)
downloadlinux-70a640d0dae3a9b1b222ce673eb5d92c263ddd61.tar.xz
net/mlx4_en: Use affinity hint
The “affinity hint” mechanism is used by the user space daemon, irqbalancer, to indicate a preferred CPU mask for irqs. Irqbalancer can use this hint to balance the irqs between the cpus indicated by the mask. We wish the HCA to preferentially map the IRQs it uses to numa cores close to it. To accomplish this, we use cpumask_set_cpu_local_first(), that sets the affinity hint according the following policy: First it maps IRQs to “close” numa cores. If these are exhausted, the remaining IRQs are mapped to “far” numa cores. Signed-off-by: Yuval Atias <yuvala@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/mlx4/main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 199c7896f081..58b1f239ac2b 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])) {
+ &ibdev->eq_table[eq], NULL)) {
/* Use legacy (same as mlx4_en driver) */
pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
ibdev->eq_table[eq] =