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irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG

Browse source 
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
This commit is contained in:
Marc Zyngier 2018-01-17 14:26:47 +00:00 • committed by Thomas Gleixner
commit c5baa1be8f
21 changed files with 2 additions and 180 deletions
Download patch file Download diff file Expand all files Collapse all files

10
kernel/irq/Kconfig
View file

@ -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

118
kernel/irq/irqdomain.c
View file

@ -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
*