[PATCH V3 08/25] perf/x86: Hybrid PMU support for hardware cache event

[kan . liang]

From: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>

The hardware cache events are different among hybrid PMUs. Each hybrid
PMU should have its own hw cache event table.

The hw_cache_extra_regs is not part of the struct x86_pmu, the hybrid()
cannot be applied here.

Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
---
 arch/x86/events/core.c       | 11 +++++++++--
 arch/x86/events/perf_event.h |  9 +++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 0bd9554..d71ca69 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -356,6 +356,7 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
 {
 	struct perf_event_attr *attr = &event->attr;
 	unsigned int cache_type, cache_op, cache_result;
+	struct x86_hybrid_pmu *pmu = is_hybrid() ? hybrid_pmu(event->pmu) : NULL;
 	u64 config, val;
 
 	config = attr->config;
@@ -375,7 +376,10 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
 		return -EINVAL;
 	cache_result = array_index_nospec(cache_result, PERF_COUNT_HW_CACHE_RESULT_MAX);
 
-	val = hw_cache_event_ids[cache_type][cache_op][cache_result];
+	if (pmu)
+		val = pmu->hw_cache_event_ids[cache_type][cache_op][cache_result];
+	else
+		val = hw_cache_event_ids[cache_type][cache_op][cache_result];
 
 	if (val == 0)
 		return -ENOENT;
@@ -384,7 +388,10 @@ set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event *event)
 		return -EINVAL;
 
 	hwc->config |= val;
-	attr->config1 = hw_cache_extra_regs[cache_type][cache_op][cache_result];
+	if (pmu)
+		attr->config1 = pmu->hw_cache_extra_regs[cache_type][cache_op][cache_result];
+	else
+		attr->config1 = hw_cache_extra_regs[cache_type][cache_op][cache_result];
 	return x86_pmu_extra_regs(val, event);
 }
 
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 665fa0b..c9974d0 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -640,6 +640,15 @@ struct x86_hybrid_pmu {
 	int				num_counters;
 	int				num_counters_fixed;
 	struct event_constraint		unconstrained;
+
+	u64				hw_cache_event_ids
+					[PERF_COUNT_HW_CACHE_MAX]
+					[PERF_COUNT_HW_CACHE_OP_MAX]
+					[PERF_COUNT_HW_CACHE_RESULT_MAX];
+	u64				hw_cache_extra_regs
+					[PERF_COUNT_HW_CACHE_MAX]
+					[PERF_COUNT_HW_CACHE_OP_MAX]
+					[PERF_COUNT_HW_CACHE_RESULT_MAX];
 };
 
 static __always_inline bool is_hybrid(void)
-- 
2.7.4