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ARM: perf: support percpu irqs for the CPU PMU

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Some CPU PMUs are wired up with one PPI for all the CPUs instead
of with a different SPI for each CPU. Add support for these
devices.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Stephen Boyd
2014-02-07 21:01:19 +00:00
committed by Will Deacon
parent 6d0abeca32
commit bbd6455937
2 changed files with 79 additions and 30 deletions
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14
arch/arm/kernel/perf_event.c
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@@ -16,6 +16,8 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/uaccess.h>
#include <linux/irq.h>
#include <linux/irqdesc.h>
#include <asm/irq_regs.h>
#include <asm/pmu.h>
@@ -295,9 +297,15 @@ validate_group(struct perf_event *event)
static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
{
struct arm_pmu *armpmu = (struct arm_pmu *) dev;
struct platform_device *plat_device = armpmu->plat_device;
struct arm_pmu_platdata *plat = dev_get_platdata(&plat_device->dev);
struct arm_pmu *armpmu;
struct platform_device *plat_device;
struct arm_pmu_platdata *plat;
if (irq_is_percpu(irq))
dev = *(void **)dev;
armpmu = dev;
plat_device = armpmu->plat_device;
plat = dev_get_platdata(&plat_device->dev);
if (plat && plat->handle_irq)
return plat->handle_irq(irq, dev, armpmu->handle_irq);