ARM: perf_event: allow platform-specific interrupt handler
Allow a platform-specific IRQ handler to be specified via platform data.
This will be used to implement the single-irq workaround for the DB8500.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 5efa2647..3239511 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -377,9 +377,18 @@
return 0;
}
+static irqreturn_t armpmu_platform_irq(int irq, void *dev)
+{
+ struct arm_pmu_platdata *plat = dev_get_platdata(&pmu_device->dev);
+
+ return plat->handle_irq(irq, dev, armpmu->handle_irq);
+}
+
static int
armpmu_reserve_hardware(void)
{
+ struct arm_pmu_platdata *plat;
+ irq_handler_t handle_irq;
int i, err = -ENODEV, irq;
pmu_device = reserve_pmu(ARM_PMU_DEVICE_CPU);
@@ -390,6 +399,12 @@
init_pmu(ARM_PMU_DEVICE_CPU);
+ plat = dev_get_platdata(&pmu_device->dev);
+ if (plat && plat->handle_irq)
+ handle_irq = armpmu_platform_irq;
+ else
+ handle_irq = armpmu->handle_irq;
+
if (pmu_device->num_resources < 1) {
pr_err("no irqs for PMUs defined\n");
return -ENODEV;
@@ -400,7 +415,7 @@
if (irq < 0)
continue;
- err = request_irq(irq, armpmu->handle_irq,
+ err = request_irq(irq, handle_irq,
IRQF_DISABLED | IRQF_NOBALANCING,
"armpmu", NULL);
if (err) {