[PATCH RFC 4/6] perf vendor events arm64: Add branch metrics for neoverse-n2

Jing Zhang
2022-10-31T11:12:04Z

Add branch related metrics.

Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
---
.../arch/arm64/arm/neoverse-n2/metrics.json | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
index 2dc6d9e..6b5aaf7 100644
--- a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
+++ b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
@@ -131,5 +131,26 @@
"BriefDescription": "The rate of LL Cache read hit to the overall LL Cache read",
"MetricGroup": "Cache",
"MetricName": "ll_cache_read_hit_rate"
+ },
+ {
+ "MetricExpr": "BR_MIS_PRED / INST_RETIRED * 1000",
+ "PublicDescription": "The rate of branches mis-predicted per kilo instructions",
+ "BriefDescription": "The rate of branches mis-predicted per kilo instructions",
+ "MetricGroup": "Branch",
+ "MetricName": "branch_mpki"
+ },
+ {
+ "MetricExpr": "(BR_PRED - BR_MIS_PRED) / INST_RETIRED * 1000",
+ "PublicDescription": "The rate of branches retired per kilo instructions",
+ "BriefDescription": "The rate of branches retired per kilo instructions",
+ "MetricGroup": "Branch",
+ "MetricName": "branch_pki"
+ },
+ {
+ "MetricExpr": "BR_MIS_PRED / BR_PRED",
+ "PublicDescription": "The rate of branches mis-predited to the overall branches",
+ "BriefDescription": "The rate of branches mis-predited to the overall branches",
+ "MetricGroup": "Branch",
+ "MetricName": "branch_miss_pred_rate"
}
]
\ No newline at end of file
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1.8.3.1