[PATCH 3/7] genirq/debugfs: Allow irq domain name to be overriden

[Marc Zyngier]

As for irqchip, it would be useful for a domain to generate its
name dynamically, and thus control the name that gets used in
debugfs.

Signed-off-by: Marc Zyngier 
---
 include/linux/irqdomain.h |  1 +
 kernel/irq/irqdomain.c| 14 ++
 2 files changed, 15 insertions(+)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 48c7e86bb556..a912b1cc1715 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -119,6 +119,7 @@ struct irq_domain_ops {
 unsigned long *out_hwirq, unsigned int *out_type);
 #endif
 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+   char *(*override_name)(struct irq_domain *d);
void (*debug_show)(struct seq_file *m, struct irq_domain *d,
   struct irq_data *irqd, int ind);
 #endif
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 5d9fc01b60a6..521065c8bace 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -220,6 +220,20 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle 
*fwnode, int size,
domain->revmap_direct_max_irq = direct_max;
irq_domain_check_hierarchy(domain);
 
+#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+   if (domain->ops->override_name) {
+   char *new_name;
+
+   new_name = domain->ops->override_name(domain);
+   if (new_name) {
+   if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED)
+   kfree(domain->name);
+   domain->name = new_name;
+   domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED;
+   }
+   }
+#endif
+
mutex_lock(_domain_mutex);
debugfs_add_domain_dir(domain);
list_add(>link, _domain_list);
-- 
2.14.2

[PATCH 3/7] genirq/debugfs: Allow irq domain name to be overriden

[Marc Zyngier]

As for irqchip, it would be useful for a domain to generate its
name dynamically, and thus control the name that gets used in
debugfs.

Signed-off-by: Marc Zyngier 
---
 include/linux/irqdomain.h |  1 +
 kernel/irq/irqdomain.c| 14 ++
 2 files changed, 15 insertions(+)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 48c7e86bb556..a912b1cc1715 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -119,6 +119,7 @@ struct irq_domain_ops {
 unsigned long *out_hwirq, unsigned int *out_type);
 #endif
 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+   char *(*override_name)(struct irq_domain *d);
void (*debug_show)(struct seq_file *m, struct irq_domain *d,
   struct irq_data *irqd, int ind);
 #endif
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 5d9fc01b60a6..521065c8bace 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -220,6 +220,20 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle 
*fwnode, int size,
domain->revmap_direct_max_irq = direct_max;
irq_domain_check_hierarchy(domain);
 
+#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+   if (domain->ops->override_name) {
+   char *new_name;
+
+   new_name = domain->ops->override_name(domain);
+   if (new_name) {
+   if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED)
+   kfree(domain->name);
+   domain->name = new_name;
+   domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED;
+   }
+   }
+#endif
+
mutex_lock(_domain_mutex);
debugfs_add_domain_dir(domain);
list_add(>link, _domain_list);
-- 
2.14.2