diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2015-05-26 19:23:35 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-05-28 18:54:06 +0300 |
| commit | cfdad2991f7addb1bc0ce3361a5ee980a0482a87 (patch) | |
| tree | 98c19aa073308cbfc25f5b71264aa717a69bde17 | |
| parent | ed61f9851d0686d56d7a9648b4807d82ad0adce6 (diff) | |
| download | linux-cfdad2991f7addb1bc0ce3361a5ee980a0482a87.tar.xz | |
arm: perf: share arm_pmu_device_probe
Enable the probe function to be shared with other drivers, which will
inject the appropriate of_device_id and pmu_probe_info tables.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
| -rw-r--r-- | arch/arm/include/asm/pmu.h | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/perf_event_cpu.c | 20 |
2 files changed, 18 insertions, 6 deletions
diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h index 62464a425499..3fc87dfd77e6 100644 --- a/arch/arm/include/asm/pmu.h +++ b/arch/arm/include/asm/pmu.h @@ -145,6 +145,10 @@ struct pmu_probe_info { #define XSCALE_PMU_PROBE(_version, _fn) \ PMU_PROBE(ARM_CPU_IMP_INTEL << 24 | _version, ARM_PMU_XSCALE_MASK, _fn) +int arm_pmu_device_probe(struct platform_device *pdev, + const struct of_device_id *of_table, + const struct pmu_probe_info *probe_table); + #endif /* CONFIG_HW_PERF_EVENTS */ #endif /* __ARM_PMU_H__ */ diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c index 14a5a0a5ec1d..797b56999b0e 100644 --- a/arch/arm/kernel/perf_event_cpu.c +++ b/arch/arm/kernel/perf_event_cpu.c @@ -286,16 +286,16 @@ static const struct pmu_probe_info pmu_probe_table[] = { /* * CPU PMU identification and probing. */ -static int probe_current_pmu(struct arm_pmu *pmu) +static int probe_current_pmu(struct arm_pmu *pmu, + const struct pmu_probe_info *info) { int cpu = get_cpu(); unsigned int cpuid = read_cpuid_id(); int ret = -ENODEV; - const struct pmu_probe_info *info; pr_info("probing PMU on CPU %d\n", cpu); - for (info = pmu_probe_table; info->init != NULL; info++) { + for (; info->init != NULL; info++) { if ((cpuid & info->mask) != info->cpuid) continue; ret = info->init(pmu); @@ -352,7 +352,9 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu) return 0; } -static int cpu_pmu_device_probe(struct platform_device *pdev) +int arm_pmu_device_probe(struct platform_device *pdev, + const struct of_device_id *of_table, + const struct pmu_probe_info *probe_table) { const struct of_device_id *of_id; const int (*init_fn)(struct arm_pmu *); @@ -371,14 +373,14 @@ static int cpu_pmu_device_probe(struct platform_device *pdev) pmu->plat_device = pdev; - if (node && (of_id = of_match_node(cpu_pmu_of_device_ids, pdev->dev.of_node))) { + if (node && (of_id = of_match_node(of_table, pdev->dev.of_node))) { init_fn = of_id->data; ret = of_pmu_irq_cfg(pmu); if (!ret) ret = init_fn(pmu); } else { - ret = probe_current_pmu(pmu); + ret = probe_current_pmu(pmu, probe_table); cpumask_setall(&pmu->supported_cpus); } @@ -405,6 +407,12 @@ out_free: return ret; } +static int cpu_pmu_device_probe(struct platform_device *pdev) +{ + return arm_pmu_device_probe(pdev, cpu_pmu_of_device_ids, + pmu_probe_table); +} + static struct platform_driver cpu_pmu_driver = { .driver = { .name = "arm-pmu", |