arm: perf: make PMU probing data-driven

[cascardo/linux.git] / arch / arm / include / asm / pmu.h

diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h
index 0b648c5..ff39290 100644 (file)
--- a/arch/arm/include/asm/pmu.h
+++ b/arch/arm/include/asm/pmu.h
@@ -15,6 +15,8 @@
 #include <linux/interrupt.h>
 #include <linux/perf_event.h>
 
+#include <asm/cputype.h>
+
 /*
  * struct arm_pmu_platdata - ARM PMU platform data
  *
@@ -127,6 +129,27 @@ int armpmu_map_event(struct perf_event *event,
                                                [PERF_COUNT_HW_CACHE_RESULT_MAX],
                     u32 raw_event_mask);
 
+struct pmu_probe_info {
+       unsigned int cpuid;
+       unsigned int mask;
+       int (*init)(struct arm_pmu *);
+};
+
+#define PMU_PROBE(_cpuid, _mask, _fn)  \
+{                                      \
+       .cpuid = (_cpuid),              \
+       .mask = (_mask),                \
+       .init = (_fn),                  \
+}
+
+#define ARM_PMU_PROBE(_cpuid, _fn) \
+       PMU_PROBE(_cpuid, ARM_CPU_PART_MASK, _fn)
+
+#define ARM_PMU_XSCALE_MASK    ((0xff << 24) | ARM_CPU_XSCALE_ARCH_MASK)
+
+#define XSCALE_PMU_PROBE(_version, _fn) \
+       PMU_PROBE(ARM_CPU_IMP_INTEL << 24 | _version, ARM_PMU_XSCALE_MASK, _fn)
+
 #endif /* CONFIG_HW_PERF_EVENTS */
 
 #endif /* __ARM_PMU_H__ */