[PATCH net-next V1 3/4] {NET,IB}/mlx4: Add rmap support to mlx4_assign_eq
From: Or Gerlitz <hidden>
Date: 2012-07-19 08:34:01
Subsystem:
infiniband subsystem, mellanox ethernet driver (mlx4_en), mellanox mlx4 ib driver, mellanox mlx4 core vpi driver, networking drivers, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Tariq Toukan, Yishai Hadas, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Amir Vadai <redacted> Enable callers of mlx4_assign_eq to supply a pointer to cpu_rmap. If supplied, the assigned IRQ is tracked using rmap infrastructure. Signed-off-by: Amir Vadai <redacted> Signed-off-by: Or Gerlitz <redacted> --- drivers/infiniband/hw/mlx4/main.c | 3 ++- drivers/net/ethernet/mellanox/mlx4/en_cq.c | 3 ++- drivers/net/ethernet/mellanox/mlx4/eq.c | 12 +++++++++++- include/linux/mlx4/device.h | 4 +++- 4 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 8a3a203..a07b774 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c@@ -1159,7 +1159,8 @@ static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) sprintf(name, "mlx4-ib-%d-%d@%s", i, j, dev->pdev->bus->name); /* Set IRQ for specific name (per ring) */ - if (mlx4_assign_eq(dev, name, &ibdev->eq_table[eq])) { + if (mlx4_assign_eq(dev, name, 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 908a460..0ef6156 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c@@ -91,7 +91,8 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq, sprintf(name, "%s-%d", priv->dev->name, cq->ring); /* Set IRQ for specific name (per ring) */ - if (mlx4_assign_eq(mdev->dev, name, &cq->vector)) { + if (mlx4_assign_eq(mdev->dev, name, NULL, + &cq->vector)) { cq->vector = (cq->ring + 1 + priv->port) % mdev->dev->caps.num_comp_vectors; mlx4_warn(mdev, "Failed Assigning an EQ to "
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index bce98d9..cd48337 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c@@ -39,6 +39,7 @@ #include <linux/dma-mapping.h> #include <linux/mlx4/cmd.h> +#include <linux/cpu_rmap.h> #include "mlx4.h" #include "fw.h"
@@ -1060,7 +1061,8 @@ int mlx4_test_interrupts(struct mlx4_dev *dev) } EXPORT_SYMBOL(mlx4_test_interrupts); -int mlx4_assign_eq(struct mlx4_dev *dev, char* name, int * vector) +int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap, + int *vector) { struct mlx4_priv *priv = mlx4_priv(dev);
@@ -1074,6 +1076,14 @@ int mlx4_assign_eq(struct mlx4_dev *dev, char* name, int * vector) snprintf(priv->eq_table.irq_names + vec * MLX4_IRQNAME_SIZE, MLX4_IRQNAME_SIZE, "%s", name); +#ifdef CONFIG_RFS_ACCEL + if (rmap) { + err = irq_cpu_rmap_add(rmap, + priv->eq_table.eq[vec].irq); + if (err) + mlx4_warn(dev, "Failed adding irq rmap\n"); + } +#endif err = request_irq(priv->eq_table.eq[vec].irq, mlx4_msi_x_interrupt, 0, &priv->eq_table.irq_names[vec<<5],
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 6f0d133..4d7761f 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h@@ -36,6 +36,7 @@ #include <linux/pci.h> #include <linux/completion.h> #include <linux/radix-tree.h> +#include <linux/cpu_rmap.h> #include <linux/atomic.h>
@@ -784,7 +785,8 @@ void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr, 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 , int* vector); +int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap, + int *vector); void mlx4_release_eq(struct mlx4_dev *dev, int vec); int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port);
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1.7.1