@@ -12,11 +12,25 @@
#ifndef __ARM_PMU_H__
#define __ARM_PMU_H__
+#include <linux/interrupt.h>
+
enum arm_pmu_type {
ARM_PMU_DEVICE_CPU = 0,
ARM_NUM_PMU_DEVICES,
};
+/*
+ * struct arm_pmu_platdata - ARM PMU platform data
+ *
+ * @handle_irq: an optional handler which will be called from the
interrupt and
+ * passed the address of the low level handler, and can be used to
implement
+ * any platform specific handling before or after calling it.
+ */
+struct arm_pmu_platdata {
+ irqreturn_t (*handle_irq)(int irq, void *dev,
+ irq_handler_t pmu_handler);
+};
+
#ifdef CONFIG_CPU_HAS_PMU
/**
@@ -377,9 +377,18 @@ validate_group(struct perf_event *event)
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 @@ armpmu_reserve_hardware(void)
init_pmu(ARM_PMU_DEVICE_CPU);
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> --- arch/arm/include/asm/pmu.h | 14 ++++++++++++++ arch/arm/kernel/perf_event.c | 17 ++++++++++++++++- 2 files changed, 30 insertions(+), 1 deletions(-) + 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 @@ armpmu_reserve_hardware(void) 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) {