The field 'affinity' in irq_desc won't change once the irq_desc data
structure is created. So cache irq_desc->affinity instead of irq_desc.
This also helps to hide struct irq_desc from device drivers.
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/en_cq.c | 6 +++---
drivers/net/ethernet/mellanox/mlx4/en_rx.c | 5 +----
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 2 +-
3 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
index 22da4d0d0f05..a03a01625398 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
@@ -31,6 +31,7 @@
*
*/
+#include <linux/irq.h>
#include <linux/mlx4/cq.h>
#include <linux/mlx4/qp.h>
#include <linux/mlx4/cmd.h>
@@ -135,9 +136,8 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
mdev->dev->caps.num_comp_vectors;
}
- cq->irq_desc =
- irq_to_desc(mlx4_eq_get_irq(mdev->dev,
- cq->vector));
+ cq->irq_affinity = irq_get_affinity_mask(
+ mlx4_eq_get_irq(mdev->dev, cq->vector));
} else {
/* For TX we use the same irq per
ring we assigned for the RX */
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 4fdd3c37e47b..59d8395ef31c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -1022,14 +1022,11 @@ int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget)
/* If we used up all the quota - we're probably not done yet... */
if (done == budget) {
int cpu_curr;
- const struct cpumask *aff;
INC_PERF_COUNTER(priv->pstats.napi_quota);
cpu_curr = smp_processor_id();
- aff = irq_desc_get_irq_data(cq->irq_desc)->affinity;
-
- if (likely(cpumask_test_cpu(cpu_curr, aff)))
+ if (likely(cpumask_test_cpu(cpu_curr, cq->irq_affinity)))
return budget;
/* Current cpu is not according to smp_irq_affinity -
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 9de30216b146..5de5e9a51d76 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -357,7 +357,7 @@ struct mlx4_en_cq {
#define CQ_USER_PEND (MLX4_EN_CQ_STATE_POLL | MLX4_EN_CQ_STATE_POLL_YIELD)
spinlock_t poll_lock; /* protects from LLS/napi conflicts */
#endif /* CONFIG_NET_RX_BUSY_POLL */
- struct irq_desc *irq_desc;
+ struct cpumask *irq_affinity;
};
struct mlx4_en_port_profile {
--
1.7.10.4
--
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