path: root/kernel/irq/proc.c
diff options
authorGrant Likely <grant.likely@secretlab.ca>2012-01-26 16:29:19 -0700
committerGrant Likely <grant.likely@linaro.org>2013-06-24 14:02:42 +0100
commitc12d2f42a96d72cffa4d9335ca455a2243333c79 (patch)
tree9ffffd9cac1dc7cac0f0ebe63c80e48ead4a9df8 /kernel/irq/proc.c
parentd3dcb436f61593843af178d4a520c8c43c04d3fc (diff)
irqdomain: Include hwirq number in /proc/interrupts
Add the hardware interrupt number to the output of /proc/interrupts. It is often important to have access to the hardware interrupt number because it identifies exactly how an interrupt signal is wired up to the interrupt controller. This is especially important when using irq_domains since irq numbers get dynamically allocated in that case, and have no relation to the actual hardware number. Note: This output is currently conditional on whether or not the irq_domain pointer is set; however hwirq could still be used without irq_domain. It may be worthwhile to always output the hwirq number regardless of the domain pointer. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Olof Johansson <olof@lixom.net> Cc: Ben Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/proc.c')
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 19ed5c425c3b..36f6ee181b0c 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -462,6 +462,8 @@ int show_interrupts(struct seq_file *p, void *v)
} else {
seq_printf(p, " %8s", "None");
+ if (desc->irq_data.domain)
+ seq_printf(p, " %*d", prec, (int) desc->irq_data.hwirq);
seq_printf(p, " %-8s", irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");