| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1428504685-8945-2-git-send-email-amirv@mellanox.com>
Date: Wed, 8 Apr 2015 17:51:15 +0300
From: Amir Vadai <amirv@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Yevgeny Petrilin <yevgenyp@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>,
Or Gerlitz <ogerlitz@...lanox.com>,
Achiad Shochat <achiad@...lanox.com>,
Ido Shamay <idos@...lanox.com>,
Rana Shahout <ranas@...lanox.com>,
Amir Vadai <amirv@...lanox.com>
Subject: [PATCH net-next 01/11] net/mlx5_core: Set irq affinity hints
From: Saeed Mahameed <saeedm@...lanox.com>
Preparation for upcoming ethernet driver.
- Move msix array from eq_table struct to priv since its not related to eq_table
- Intorduce irq_info struct to hold all irq information
- Move name from mlx5_eq to irq_info struct since it is irq property.
- Set IRQ affinity hints
Signed-off-by: Achiad Shochat <achiad@...lanox.com>
Signed-off-by: Rana Shahout <ranas@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
Signed-off-by: Amir Vadai <amirv@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 16 ++---
drivers/net/ethernet/mellanox/mlx5/core/main.c | 97 +++++++++++++++++++++++---
include/linux/mlx5/driver.h | 11 ++-
3 files changed, 103 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index dbf190d..d0a40ca 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -339,7 +339,7 @@ static void init_eq_buf(struct mlx5_eq *eq)
int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
int nent, u64 mask, const char *name, struct mlx5_uar *uar)
{
- struct mlx5_eq_table *table = &dev->priv.eq_table;
+ struct mlx5_priv *priv = &dev->priv;
struct mlx5_create_eq_mbox_in *in;
struct mlx5_create_eq_mbox_out out;
int err;
@@ -378,14 +378,15 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
goto err_in;
}
- snprintf(eq->name, MLX5_MAX_EQ_NAME, "%s@pci:%s",
+ snprintf(priv->irq_info[vecidx].name, MLX5_MAX_IRQ_NAME, "%s@pci:%s",
name, pci_name(dev->pdev));
+
eq->eqn = out.eq_number;
eq->irqn = vecidx;
eq->dev = dev;
eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET;
- err = request_irq(table->msix_arr[vecidx].vector, mlx5_msix_handler, 0,
- eq->name, eq);
+ err = request_irq(priv->msix_arr[vecidx].vector, mlx5_msix_handler, 0,
+ priv->irq_info[vecidx].name, eq);
if (err)
goto err_eq;
@@ -401,7 +402,7 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
return 0;
err_irq:
- free_irq(table->msix_arr[vecidx].vector, eq);
+ free_irq(priv->msix_arr[vecidx].vector, eq);
err_eq:
mlx5_cmd_destroy_eq(dev, eq->eqn);
@@ -417,16 +418,15 @@ EXPORT_SYMBOL_GPL(mlx5_create_map_eq);
int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
{
- struct mlx5_eq_table *table = &dev->priv.eq_table;
int err;
mlx5_debug_eq_remove(dev, eq);
- free_irq(table->msix_arr[eq->irqn].vector, eq);
+ free_irq(dev->priv.msix_arr[eq->irqn].vector, eq);
err = mlx5_cmd_destroy_eq(dev, eq->eqn);
if (err)
mlx5_core_warn(dev, "failed to destroy a previously created eq: eqn %d\n",
eq->eqn);
- synchronize_irq(table->msix_arr[eq->irqn].vector);
+ synchronize_irq(dev->priv.msix_arr[eq->irqn].vector);
mlx5_buf_free(dev, &eq->buf);
return err;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 28425e5..35877cd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -38,6 +38,7 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/io-mapping.h>
+#include <linux/interrupt.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/qp.h>
@@ -208,7 +209,8 @@ static void release_bar(struct pci_dev *pdev)
static int mlx5_enable_msix(struct mlx5_core_dev *dev)
{
- struct mlx5_eq_table *table = &dev->priv.eq_table;
+ struct mlx5_priv *priv = &dev->priv;
+ struct mlx5_eq_table *table = &priv->eq_table;
int num_eqs = 1 << dev->caps.gen.log_max_eq;
int nvec;
int i;
@@ -218,14 +220,16 @@ static int mlx5_enable_msix(struct mlx5_core_dev *dev)
if (nvec <= MLX5_EQ_VEC_COMP_BASE)
return -ENOMEM;
- table->msix_arr = kzalloc(nvec * sizeof(*table->msix_arr), GFP_KERNEL);
- if (!table->msix_arr)
- return -ENOMEM;
+ priv->msix_arr = kzalloc(nvec * sizeof(*priv->msix_arr), GFP_KERNEL);
+
+ priv->irq_info = kzalloc(nvec * sizeof(*priv->irq_info), GFP_KERNEL);
+ if (!priv->msix_arr || !priv->irq_info)
+ goto err_free_msix;
for (i = 0; i < nvec; i++)
- table->msix_arr[i].entry = i;
+ priv->msix_arr[i].entry = i;
- nvec = pci_enable_msix_range(dev->pdev, table->msix_arr,
+ nvec = pci_enable_msix_range(dev->pdev, priv->msix_arr,
MLX5_EQ_VEC_COMP_BASE + 1, nvec);
if (nvec < 0)
return nvec;
@@ -233,14 +237,20 @@ static int mlx5_enable_msix(struct mlx5_core_dev *dev)
table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
return 0;
+
+err_free_msix:
+ kfree(priv->irq_info);
+ kfree(priv->msix_arr);
+ return -ENOMEM;
}
static void mlx5_disable_msix(struct mlx5_core_dev *dev)
{
- struct mlx5_eq_table *table = &dev->priv.eq_table;
+ struct mlx5_priv *priv = &dev->priv;
pci_disable_msix(dev->pdev);
- kfree(table->msix_arr);
+ kfree(priv->irq_info);
+ kfree(priv->msix_arr);
}
struct mlx5_reg_host_endianess {
@@ -507,6 +517,71 @@ static int mlx5_core_disable_hca(struct mlx5_core_dev *dev)
return 0;
}
+static void mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
+{
+ struct mlx5_priv *priv = &mdev->priv;
+ struct msix_entry *msix = priv->msix_arr;
+ int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
+ int numa_node =
+#if IS_ENABLED(CONFIG_NUMA)
+ mdev->pdev->dev.numa_node;
+#else
+ -1;
+#endif
+
+ if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) {
+ mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
+ return;
+ }
+
+ if (cpumask_set_cpu_local_first(i, numa_node, priv->irq_info[i].mask)) {
+ mlx5_core_warn(mdev, "cpumask_set_cpu_local_first failed");
+ goto err_clear_mask;
+ }
+
+ if (irq_set_affinity_hint(irq, priv->irq_info[i].mask)) {
+ mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x",
+ irq);
+ goto err_clear_mask;
+ }
+
+ return;
+
+err_clear_mask:
+ free_cpumask_var(priv->irq_info[i].mask);
+ priv->irq_info[i].mask = NULL;
+}
+
+static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i)
+{
+ struct mlx5_priv *priv = &mdev->priv;
+ struct msix_entry *msix = priv->msix_arr;
+ int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
+ cpumask_var_t mask = priv->irq_info[i].mask;
+
+ if (!priv->irq_info[i].mask)
+ return;
+
+ irq_set_affinity_hint(irq, NULL);
+ free_cpumask_var(mask);
+}
+
+static void mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev)
+{
+ int i;
+
+ for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++)
+ mlx5_irq_set_affinity_hint(mdev, i);
+}
+
+static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev)
+{
+ int i;
+
+ for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++)
+ mlx5_irq_clear_affinity_hint(mdev, i);
+}
+
int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, int *irqn)
{
struct mlx5_eq_table *table = &dev->priv.eq_table;
@@ -549,7 +624,7 @@ static void free_comp_eqs(struct mlx5_core_dev *dev)
static int alloc_comp_eqs(struct mlx5_core_dev *dev)
{
struct mlx5_eq_table *table = &dev->priv.eq_table;
- char name[MLX5_MAX_EQ_NAME];
+ char name[MLX5_MAX_IRQ_NAME];
struct mlx5_eq *eq;
int ncomp_vec;
int nent;
@@ -566,7 +641,7 @@ static int alloc_comp_eqs(struct mlx5_core_dev *dev)
goto clean;
}
- snprintf(name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i);
+ snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i);
err = mlx5_create_map_eq(dev, eq,
i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
name, &dev->priv.uuari.uars[0]);
@@ -730,6 +805,7 @@ static int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
goto err_stop_eqs;
}
+ mlx5_irq_set_affinity_hints(dev);
MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
mlx5_init_cq_table(dev);
@@ -793,6 +869,7 @@ static void mlx5_dev_cleanup(struct mlx5_core_dev *dev)
mlx5_cleanup_srq_table(dev);
mlx5_cleanup_qp_table(dev);
mlx5_cleanup_cq_table(dev);
+ mlx5_irq_clear_affinity_hints(dev);
free_comp_eqs(dev);
mlx5_stop_eqs(dev);
mlx5_free_uuars(dev, &priv->uuari);
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 9a90e75..fc45233 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -85,7 +85,7 @@ enum {
};
enum {
- MLX5_MAX_EQ_NAME = 32
+ MLX5_MAX_IRQ_NAME = 32
};
enum {
@@ -351,7 +351,6 @@ struct mlx5_eq {
u8 eqn;
int nent;
u64 mask;
- char name[MLX5_MAX_EQ_NAME];
struct list_head list;
int index;
struct mlx5_rsc_debug *dbg;
@@ -414,7 +413,6 @@ struct mlx5_eq_table {
struct mlx5_eq pages_eq;
struct mlx5_eq async_eq;
struct mlx5_eq cmd_eq;
- struct msix_entry *msix_arr;
int num_comp_vectors;
/* protect EQs list
*/
@@ -467,9 +465,16 @@ struct mlx5_mr_table {
struct radix_tree_root tree;
};
+struct mlx5_irq_info {
+ cpumask_var_t mask;
+ char name[MLX5_MAX_IRQ_NAME];
+};
+
struct mlx5_priv {
char name[MLX5_MAX_NAME_LEN];
struct mlx5_eq_table eq_table;
+ struct msix_entry *msix_arr;
+ struct mlx5_irq_info *irq_info;
struct mlx5_uuar_info uuari;
MLX5_DECLARE_DOORBELL_LOCK(cq_uar_lock);
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists