genirq: Make warning in handle_percpu_event useful
The WARN_ON_ONCE in handle_percpu_event() which emits a warning when
an action handler returns with interrupts enabled is not really
useful. It does not reveal the interrupt number and handler function
which caused it. Make it WARN_ONCE() and add the information.
Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index e099e9e..b110c83 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -64,7 +64,8 @@
res = action->handler(irq, action->dev_id);
trace_irq_handler_exit(irq, action, res);
- if (WARN_ON_ONCE(!irqs_disabled()))
+ if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled interrupts\n",
+ irq, action->handler))
local_irq_disable();
switch (res) {