From 45736a72fb79b204c1fbdb08a1e1a2aa52c7281a Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 11 Apr 2017 09:39:55 +0100 Subject: drivers/perf: arm_pmu: add ACPI framework This patch adds framework code to handle parsing PMU data out of the MADT, sanity checking this, and managing the association of CPUs (and their interrupts) with appropriate logical PMUs. For the time being, we expect that only one PMU driver (PMUv3) will make use of this, and we simply pass in a single probe function. This is based on an earlier patch from Jeremy Linton. Signed-off-by: Mark Rutland Tested-by: Jeremy Linton Cc: Will Deacon Signed-off-by: Will Deacon --- include/linux/perf/arm_pmu.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux/perf') diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 25556ebb1c7b..1360dd6d5e61 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -117,6 +117,9 @@ struct arm_pmu { struct notifier_block cpu_pm_nb; /* the attr_groups array must be NULL-terminated */ const struct attribute_group *attr_groups[ARMPMU_NR_ATTR_GROUPS + 1]; + + /* Only to be used by ACPI probing code */ + unsigned long acpi_cpuid; }; #define to_arm_pmu(p) (container_of(p, struct arm_pmu, pmu)) @@ -159,12 +162,20 @@ int arm_pmu_device_probe(struct platform_device *pdev, const struct of_device_id *of_table, const struct pmu_probe_info *probe_table); +#ifdef CONFIG_ACPI +int arm_pmu_acpi_probe(armpmu_init_fn init_fn); +#else +static inline int arm_pmu_acpi_probe(armpmu_init_fn init_fn) { return 0; } +#endif + /* Internal functions only for core arm_pmu code */ struct arm_pmu *armpmu_alloc(void); void armpmu_free(struct arm_pmu *pmu); int armpmu_register(struct arm_pmu *pmu); int armpmu_request_irqs(struct arm_pmu *armpmu); void armpmu_free_irqs(struct arm_pmu *armpmu); +int armpmu_request_irq(struct arm_pmu *armpmu, int cpu); +void armpmu_free_irq(struct arm_pmu *armpmu, int cpu); #define ARMV8_PMU_PDEV_NAME "armv8-pmu" -- cgit v1.2.3-59-g8ed1b