ARM: perf: move irq registration into pmu implementation

This patch moves the CPU-specific IRQ registration and parsing code into
the CPU PMU backend. This is required because a PMU may have more than
one interrupt, which in turn can be either PPI (per-cpu) or SPI
(requiring strict affinity setting at the interrupt distributor).

Signed-off-by: Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@arm.com>
[will: cosmetic edits and reworked interrupt dispatching]
Signed-off-by: Will Deacon <will.deacon@arm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h
index a993ad676047..a26170dce02e 100644
--- a/arch/arm/include/asm/pmu.h
+++ b/arch/arm/include/asm/pmu.h
@@ -78,6 +78,8 @@ struct arm_pmu {
 	void		(*start)(void);
 	void		(*stop)(void);
 	void		(*reset)(void *);
+	int		(*request_irq)(irq_handler_t handler);
+	void		(*free_irq)(void);
 	int		(*map_event)(struct perf_event *event);
 	int		num_events;
 	atomic_t	active_events;