arm_pmu: acpi: request IRQs up-front
We can't request IRQs in atomic context, so for ACPI systems we'll have
to request them up-front, and later associate them with CPUs.
This patch reorganises the arm_pmu code to do so. As we no longer have
the arm_pmu structure at probe time, a number of prototypes need to be
adjusted, requiring changes to the common arm_pmu code and arm_pmu
platform code.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 2b2af35..0c2ed11 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -534,7 +534,7 @@ static int armpmu_count_irq_users(const int irq)
return count;
}
-void armpmu_free_cpu_irq(int irq, int cpu)
+void armpmu_free_irq(int irq, int cpu)
{
if (per_cpu(cpu_irq, cpu) == 0)
return;
@@ -549,15 +549,7 @@ void armpmu_free_cpu_irq(int irq, int cpu)
per_cpu(cpu_irq, cpu) = 0;
}
-void armpmu_free_irq(struct arm_pmu *armpmu, int cpu)
-{
- struct pmu_hw_events __percpu *hw_events = armpmu->hw_events;
- int irq = per_cpu(hw_events->irq, cpu);
-
- armpmu_free_cpu_irq(irq, cpu);
-}
-
-int armpmu_request_cpu_irq(int irq, int cpu)
+int armpmu_request_irq(int irq, int cpu)
{
int err = 0;
const irq_handler_t handler = armpmu_dispatch_irq;
@@ -598,16 +590,6 @@ int armpmu_request_cpu_irq(int irq, int cpu)
return err;
}
-int armpmu_request_irq(struct arm_pmu *armpmu, int cpu)
-{
- struct pmu_hw_events __percpu *hw_events = armpmu->hw_events;
- int irq = per_cpu(hw_events->irq, cpu);
- if (!irq)
- return 0;
-
- return armpmu_request_cpu_irq(irq, cpu);
-}
-
static int armpmu_get_cpu_irq(struct arm_pmu *pmu, int cpu)
{
struct pmu_hw_events __percpu *hw_events = pmu->hw_events;