irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG

CONFIG_IRQ_DOMAIN_DEBUG is similar to CONFIG_GENERIC_IRQ_DEBUGFS,
just with less information.

Spring cleanup time.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Yang Shunyong <shunyong.yang@hxt-semitech.com>
Link: https://lkml.kernel.org/r/20180117142647.23622-1-marc.zyngier@arm.com

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
  *