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 <[email protected]> --- 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(&irq_domain_mutex); debugfs_add_domain_dir(domain); list_add(&domain->link, &irq_domain_list); -- 2.14.2
