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Commit 2370c00d authored by Marc Zyngier's avatar Marc Zyngier Committed by Thomas Gleixner
Browse files

irqdomain: Let irq_domain_mapping display ACPI fwnode attributes 



If the system is using ACPI, there is no of_node to display. But ACPI can
use a struct irqchip_fwid as a domain identifier, and it can be used to
display the name contained in that structure.

The output on such a system will look like this:

 pMSI      0           0           0  irqchip@00000000e1180000
 MSI      37           0           0  irqchip@00000000e1180000
 GICv2m   37           0           0  irqchip@00000000e1180000
 GICv2   448         448           0  irqchip@ffff000008003000

Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/20170512115538.10767-3-marc.zyngier@arm.com


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent fe17a42e

kernel/irq/irqdomain.c

+12 −1
Original line number Diff line number Diff line
@@ -801,15 +801,26 @@ static int virq_debug_show(struct seq_file *m, void *private) 
	mutex_lock(&irq_domain_mutex);

	list_for_each_entry(domain, &irq_domain_list, link) {

		struct device_node *of_node;

		const char *name;



		int count = 0;



		of_node = irq_domain_get_of_node(domain);

		if (of_node)

			name = of_node_full_name(of_node);

		else if (is_fwnode_irqchip(domain->fwnode))

			name = container_of(domain->fwnode, struct irqchip_fwid,

					    fwnode)->name;

		else

			name = "";



		radix_tree_for_each_slot(slot, &domain->revmap_tree, &iter, 0)

			count++;

		seq_printf(m, "%c%-16s  %6u  %10u  %10u  %s\n",

			   domain == irq_default_domain ? '*' : ' ', domain->name,

			   domain->revmap_size + count, domain->revmap_size,

			   domain->revmap_direct_max_irq,

			   of_node ? of_node_full_name(of_node) : "");

			   name);

	}

	mutex_unlock(&irq_domain_mutex);