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

Commit Message

Jing Zhang Oct. 31, 2022, 11:11 a.m. UTC

Add branch related metrics.

Signed-off-by: Jing Zhang <[e-mail]>
---
 .../arch/arm64/arm/neoverse-n2/metrics.json         | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Patch

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