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mlx4_core: Distinguish multiple devices in /proc/interrupts

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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>
This commit is contained in:
Arputham Benjamin 2009-09-05 20:24:50 -07:00 committed by Roland Dreier
parent 1af92e2a21
commit f5f5951c74
1 changed files with 26 additions and 8 deletions
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34
drivers/net/mlx4/eq.c
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@ -40,6 +40,10 @@
#include "mlx4.h"
#include "fw.h"
enum {
MLX4_IRQNAME_SIZE = 64
};
enum {
MLX4_NUM_ASYNC_EQE = 0x100,
MLX4_NUM_SPARE_EQE = 0x80,
@ -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;