[v8,3/9] perf vendor events arm64: Add common topdown L1 metrics

Commit Message

Jing Zhang Jan. 17, 2023, 7:29 a.m. UTC

The metrics of topdown L1 are from ARM sbsa7.0 platform design doc[0],
D37-38, which are standard. So put them in the common file sbsa.json of
arm64, so that other cores besides n2/v2 can also be reused.

[0] https://documentation-service.arm.com/static/60250c7395978b529036da86?token=

Signed-off-by: Jing Zhang <[e-mail]>
Reviewed-by: John Garry <[e-mail]>
Acked-by: Ian Rogers <[e-mail]>
---
 tools/perf/pmu-events/arch/arm64/sbsa.json | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/sbsa.json

Patch

diff --git a/tools/perf/pmu-events/arch/arm64/sbsa.json b/tools/perf/pmu-events/arch/arm64/sbsa.json
new file mode 100644
index 0000000..f678c37e
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/sbsa.json
@@ -0,0 +1,30 @@ 
+[
+    {
+        "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)",
+        "BriefDescription": "Frontend bound L1 topdown metric",
+        "MetricGroup": "TopdownL1",
+        "MetricName": "frontend_bound",
+        "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "(1 - op_retired / op_spec) * (1 - stall_slot / (#slots * cpu_cycles))",
+        "BriefDescription": "Bad speculation L1 topdown metric",
+        "MetricGroup": "TopdownL1",
+        "MetricName": "bad_speculation",
+        "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "(op_retired / op_spec) * (1 - stall_slot / (#slots * cpu_cycles))",
+        "BriefDescription": "Retiring L1 topdown metric",
+        "MetricGroup": "TopdownL1",
+        "MetricName": "retiring",
+        "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "stall_slot_backend / (#slots * cpu_cycles)",
+        "BriefDescription": "Backend Bound L1 topdown metric",
+        "MetricGroup": "TopdownL1",
+        "MetricName": "backend_bound",
+        "ScaleUnit": "100%"
+    }
+]