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Diffstat (limited to 'arch/arm/kernel/perf_event_cpu.c')
-rw-r--r--arch/arm/kernel/perf_event_cpu.c51
1 files changed, 27 insertions, 24 deletions
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c
index 5f6620684e25..1f2740e3dbc0 100644
--- a/arch/arm/kernel/perf_event_cpu.c
+++ b/arch/arm/kernel/perf_event_cpu.c
@@ -147,7 +147,7 @@ static void cpu_pmu_init(struct arm_pmu *cpu_pmu)
cpu_pmu->free_irq = cpu_pmu_free_irq;
/* Ensure the PMU has sane values out of reset. */
- if (cpu_pmu && cpu_pmu->reset)
+ if (cpu_pmu->reset)
on_each_cpu(cpu_pmu->reset, cpu_pmu, 1);
}
@@ -201,48 +201,46 @@ static struct platform_device_id cpu_pmu_plat_device_ids[] = {
static int probe_current_pmu(struct arm_pmu *pmu)
{
int cpu = get_cpu();
- unsigned long cpuid = read_cpuid_id();
- unsigned long implementor = (cpuid & 0xFF000000) >> 24;
- unsigned long part_number = (cpuid & 0xFFF0);
+ unsigned long implementor = read_cpuid_implementor();
+ unsigned long part_number = read_cpuid_part_number();
int ret = -ENODEV;
pr_info("probing PMU on CPU %d\n", cpu);
/* ARM Ltd CPUs. */
- if (0x41 == implementor) {
+ if (implementor == ARM_CPU_IMP_ARM) {
switch (part_number) {
- case 0xB360: /* ARM1136 */
- case 0xB560: /* ARM1156 */
- case 0xB760: /* ARM1176 */
+ case ARM_CPU_PART_ARM1136:
+ case ARM_CPU_PART_ARM1156:
+ case ARM_CPU_PART_ARM1176:
ret = armv6pmu_init(pmu);
break;
- case 0xB020: /* ARM11mpcore */
+ case ARM_CPU_PART_ARM11MPCORE:
ret = armv6mpcore_pmu_init(pmu);
break;
- case 0xC080: /* Cortex-A8 */
+ case ARM_CPU_PART_CORTEX_A8:
ret = armv7_a8_pmu_init(pmu);
break;
- case 0xC090: /* Cortex-A9 */
+ case ARM_CPU_PART_CORTEX_A9:
ret = armv7_a9_pmu_init(pmu);
break;
- case 0xC050: /* Cortex-A5 */
+ case ARM_CPU_PART_CORTEX_A5:
ret = armv7_a5_pmu_init(pmu);
break;
- case 0xC0F0: /* Cortex-A15 */
+ case ARM_CPU_PART_CORTEX_A15:
ret = armv7_a15_pmu_init(pmu);
break;
- case 0xC070: /* Cortex-A7 */
+ case ARM_CPU_PART_CORTEX_A7:
ret = armv7_a7_pmu_init(pmu);
break;
}
/* Intel CPUs [xscale]. */
- } else if (0x69 == implementor) {
- part_number = (cpuid >> 13) & 0x7;
- switch (part_number) {
- case 1:
+ } else if (implementor == ARM_CPU_IMP_INTEL) {
+ switch (xscale_cpu_arch_version()) {
+ case ARM_CPU_XSCALE_ARCH_V1:
ret = xscale1pmu_init(pmu);
break;
- case 2:
+ case ARM_CPU_XSCALE_ARCH_V2:
ret = xscale2pmu_init(pmu);
break;
}
@@ -279,17 +277,22 @@ static int cpu_pmu_device_probe(struct platform_device *pdev)
}
if (ret) {
- pr_info("failed to register PMU devices!");
- kfree(pmu);
- return ret;
+ pr_info("failed to probe PMU!");
+ goto out_free;
}
cpu_pmu = pmu;
cpu_pmu->plat_device = pdev;
cpu_pmu_init(cpu_pmu);
- armpmu_register(cpu_pmu, PERF_TYPE_RAW);
+ ret = armpmu_register(cpu_pmu, PERF_TYPE_RAW);
- return 0;
+ if (!ret)
+ return 0;
+
+out_free:
+ pr_info("failed to register PMU devices!");
+ kfree(pmu);
+ return ret;
}
static struct platform_driver cpu_pmu_driver = {