diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/Kconfig | 10 | ||||
| -rw-r--r-- | kernel/irq/irqdomain.c | 118 |
2 files changed, 0 insertions, 128 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 89e355866450..6fc87ccda1d7 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -103,16 +103,6 @@ config GENERIC_IRQ_MATRIX_ALLOCATOR config GENERIC_IRQ_RESERVATION_MODE bool -config IRQ_DOMAIN_DEBUG - bool "Expose hardware/virtual IRQ mapping via debugfs" - depends on IRQ_DOMAIN && DEBUG_FS - help - This option will show the mapping relationship between hardware irq - numbers and Linux irq numbers. The mapping is exposed via debugfs - in the file "irq_domain_mapping". - - If you don't know what this means you don't need it. - # Support forced irq threading config IRQ_FORCED_THREADING bool diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 62068ad46930..e6a9c36470ee 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -897,124 +897,6 @@ unsigned int irq_find_mapping(struct irq_domain *domain, } EXPORT_SYMBOL_GPL(irq_find_mapping); -#ifdef CONFIG_IRQ_DOMAIN_DEBUG -static void virq_debug_show_one(struct seq_file *m, struct irq_desc *desc) -{ - struct irq_domain *domain; - struct irq_data *data; - - domain = desc->irq_data.domain; - data = &desc->irq_data; - - while (domain) { - unsigned int irq = data->irq; - unsigned long hwirq = data->hwirq; - struct irq_chip *chip; - bool direct; - - if (data == &desc->irq_data) - seq_printf(m, "%5d ", irq); - else - seq_printf(m, "%5d+ ", irq); - seq_printf(m, "0x%05lx ", hwirq); - - chip = irq_data_get_irq_chip(data); - seq_printf(m, "%-15s ", (chip && chip->name) ? chip->name : "none"); - - seq_printf(m, "0x%p ", irq_data_get_irq_chip_data(data)); - - seq_printf(m, " %c ", (desc->action && desc->action->handler) ? '*' : ' '); - direct = (irq == hwirq) && (irq < domain->revmap_direct_max_irq); - seq_printf(m, "%6s%-8s ", - (hwirq < domain->revmap_size) ? "LINEAR" : "RADIX", - direct ? "(DIRECT)" : ""); - seq_printf(m, "%s\n", domain->name); -#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY - domain = domain->parent; - data = data->parent_data; -#else - domain = NULL; -#endif - } -} - -static int virq_debug_show(struct seq_file *m, void *private) -{ - unsigned long flags; - struct irq_desc *desc; - struct irq_domain *domain; - struct radix_tree_iter iter; - void __rcu **slot; - int i; - - seq_printf(m, " %-16s %-6s %-10s %-10s %s\n", - "name", "mapped", "linear-max", "direct-max", "devtree-node"); - 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, - name); - } - mutex_unlock(&irq_domain_mutex); - - seq_printf(m, "%-5s %-7s %-15s %-*s %6s %-14s %s\n", "irq", "hwirq", - "chip name", (int)(2 * sizeof(void *) + 2), "chip data", - "active", "type", "domain"); - - for (i = 1; i < nr_irqs; i++) { - desc = irq_to_desc(i); - if (!desc) - continue; - - raw_spin_lock_irqsave(&desc->lock, flags); - virq_debug_show_one(m, desc); - raw_spin_unlock_irqrestore(&desc->lock, flags); - } - - return 0; -} - -static int virq_debug_open(struct inode *inode, struct file *file) -{ - return single_open(file, virq_debug_show, inode->i_private); -} - -static const struct file_operations virq_debug_fops = { - .open = virq_debug_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init irq_debugfs_init(void) -{ - if (debugfs_create_file("irq_domain_mapping", S_IRUGO, NULL, - NULL, &virq_debug_fops) == NULL) - return -ENOMEM; - - return 0; -} -__initcall(irq_debugfs_init); -#endif /* CONFIG_IRQ_DOMAIN_DEBUG */ - /** * irq_domain_xlate_onecell() - Generic xlate for direct one cell bindings * |