irqdomain: Let irq_domain_mapping display ACPI fwnode attributes (2370c00d) · Commits · 戴 / test

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:

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

Thomas Gleixner <tglx@linutronix.de>

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);

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