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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>
hifive-unleashed-5.1
Thomas Gleixner 2011-02-25 17:17:18 +01:00
parent fd4afaf333
commit 1204e95689
1 changed files with 2 additions and 1 deletions
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3
kernel/irq/handle.c
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@ -64,7 +64,8 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
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) {