We could find out which device is using that MSI/MSI-X.
Use irq_print_chip() to append pci device name.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
Cc: Joerg Roedel <j...@8bytes.org>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Cc: Sebastian Andrzej Siewior <sebast...@breakpoint.cc>
---
arch/x86/kernel/apic/io_apic.c | 9 ++++++---
drivers/iommu/irq_remapping.c | 8 ++++++++
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index f8d4d8d..8b03875 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3089,8 +3089,11 @@ msi_set_affinity(struct irq_data *data, const struct
cpumask *mask, bool force)
static void msi_irq_print_chip(struct irq_data *data, struct seq_file *p)
{
- seq_printf(p, " %s%s", data->chip->name,
- data->msi_desc->msi_attrib.is_msix ? "-X" : "");
+ struct pci_dev *dev = data->msi_desc->dev;
+
+ seq_printf(p, " %s%s-edge@%s", data->chip->name,
+ data->msi_desc->msi_attrib.is_msix ? "-X" : "",
+ dev_name(&dev->dev));
}
/*
@@ -3130,7 +3133,7 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc
*msidesc,
setup_remapped_irq(irq, irq_get_chip_data(irq), chip);
- irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge");
+ irq_set_chip_and_handler(irq, chip, handle_edge_irq);
dev_printk(KERN_DEBUG, &dev->dev, "irq %d for MSI%s\n", irq,
msidesc->msi_attrib.is_msix ? "-X" : "");
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index e245ab0..ca595f7 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -365,10 +365,18 @@ static void ir_ack_apic_level(struct irq_data *data)
static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
{
+ struct pci_dev *dev = NULL;
+
seq_printf(p, " IR-%s%s", data->chip->name,
data->msi_desc ?
(data->msi_desc->msi_attrib.is_msix ? "-X" : "")
: "");
+
+ if (data->msi_desc)
+ dev = data->msi_desc->dev;
+
+ if (dev)
+ seq_printf(p, "-edge@%s", dev_name(&dev->dev));
}
static void __init irq_remap_modify_chip_defaults(struct irq_chip *chip)
--
1.7.10.4
--
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