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authorArputham Benjamin <abenjamin@sgi.com>2009-09-05 20:24:50 -0700
committerRoland Dreier <rolandd@cisco.com>2009-09-05 20:24:50 -0700
commitf5f5951c7494b6ae89ec53ca7ca6b0177ebd1308 (patch)
treeb887609a24906ceb27ce3e0fe1f1704892965730 /drivers/net/mlx4
parent1af92e2a211b0d46ef60ea9f30f989fd7b5725fa (diff)
downloadblackbird-op-linux-f5f5951c7494b6ae89ec53ca7ca6b0177ebd1308.tar.gz
blackbird-op-linux-f5f5951c7494b6ae89ec53ca7ca6b0177ebd1308.zip
mlx4_core: Distinguish multiple devices in /proc/interrupts
When the mlx4 driver uses the same name for interrupts for every device in the system. This can make it very confusing trying to work out exactly which device MSI-X interrupts are for. Change the driver to add the PCI name of the device to the interrupt name. Signed-off-by: Arputham Benjamin <abenjamin@sgi.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4')
-rw-r--r--drivers/net/mlx4/eq.c34
1 files changed, 26 insertions, 8 deletions
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
index d7974a60b961..bffb7995cb70 100644
--- a/drivers/net/mlx4/eq.c
+++ b/drivers/net/mlx4/eq.c
@@ -41,6 +41,10 @@
#include "fw.h"
enum {
+ MLX4_IRQNAME_SIZE = 64
+};
+
+enum {
MLX4_NUM_ASYNC_EQE = 0x100,
MLX4_NUM_SPARE_EQE = 0x80,
MLX4_EQ_ENTRY_SIZE = 0x20
@@ -572,7 +576,9 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
priv->eq_table.clr_int = priv->clr_base +
(priv->eq_table.inta_pin < 32 ? 4 : 0);
- priv->eq_table.irq_names = kmalloc(16 * dev->caps.num_comp_vectors, GFP_KERNEL);
+ priv->eq_table.irq_names =
+ kmalloc(MLX4_IRQNAME_SIZE * (dev->caps.num_comp_vectors + 1),
+ GFP_KERNEL);
if (!priv->eq_table.irq_names) {
err = -ENOMEM;
goto err_out_bitmap;
@@ -595,17 +601,25 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
goto err_out_comp;
if (dev->flags & MLX4_FLAG_MSI_X) {
- static const char async_eq_name[] = "mlx4-async";
const char *eq_name;
for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) {
if (i < dev->caps.num_comp_vectors) {
- snprintf(priv->eq_table.irq_names + i * 16, 16,
- "mlx4-comp-%d", i);
- eq_name = priv->eq_table.irq_names + i * 16;
- } else
- eq_name = async_eq_name;
+ snprintf(priv->eq_table.irq_names +
+ i * MLX4_IRQNAME_SIZE,
+ MLX4_IRQNAME_SIZE,
+ "mlx4-comp-%d@pci:%s", i,
+ pci_name(dev->pdev));
+ } else {
+ snprintf(priv->eq_table.irq_names +
+ i * MLX4_IRQNAME_SIZE,
+ MLX4_IRQNAME_SIZE,
+ "mlx4-async@pci:%s",
+ pci_name(dev->pdev));
+ }
+ eq_name = priv->eq_table.irq_names +
+ i * MLX4_IRQNAME_SIZE;
err = request_irq(priv->eq_table.eq[i].irq,
mlx4_msi_x_interrupt, 0, eq_name,
priv->eq_table.eq + i);
@@ -615,8 +629,12 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
priv->eq_table.eq[i].have_irq = 1;
}
} else {
+ snprintf(priv->eq_table.irq_names,
+ MLX4_IRQNAME_SIZE,
+ DRV_NAME "@pci:%s",
+ pci_name(dev->pdev));
err = request_irq(dev->pdev->irq, mlx4_interrupt,
- IRQF_SHARED, DRV_NAME, dev);
+ IRQF_SHARED, priv->eq_table.irq_names, dev);
if (err)
goto err_out_async;
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