[PATCH v6 03/13] perf jevents: Add upc metric for uops per cycle for AMD

[Ian Rogers <irogers@google.com>]

The metric adjusts for whether or not SMT is on.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/amd_metrics.py | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py
index 335e8a7e0537..f734f1127ff3 100755
--- a/tools/perf/pmu-events/amd_metrics.py
+++ b/tools/perf/pmu-events/amd_metrics.py
@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
 from metric import (d_ratio, has_event, max, Event, JsonEncodeMetric,
-                    JsonEncodeMetricGroupDescriptions, LoadEvents, Metric,
-                    MetricGroup, Select)
+                    JsonEncodeMetricGroupDescriptions, Literal, LoadEvents,
+                    Metric, MetricGroup, Select)
 import argparse
 import json
 import math
@@ -10,8 +10,17 @@ import os
 
 # Global command line arguments.
 _args = None
-
+_zen_model: int = 1
 interval_sec = Event("duration_time")
+cycles = Event("cycles")
+# Number of CPU cycles scaled for SMT.
+smt_cycles = Select(cycles / 2, Literal("#smt_on"), cycles)
+
+def AmdUpc() -> Metric:
+  ops = Event("ex_ret_ops", "ex_ret_cops")
+  upc = d_ratio(ops, smt_cycles)
+  return Metric("lpm_upc", "Micro-ops retired per core cycle (higher is better)",
+                upc, "uops/cycle")
 
 def Idle() -> Metric:
   cyc = Event("msr/mperf/")
@@ -45,6 +54,7 @@ def Rapl() -> MetricGroup:
 
 def main() -> None:
   global _args
+  global _zen_model
 
   def dir_path(path: str) -> str:
     """Validate path is a directory for argparse."""
@@ -65,7 +75,10 @@ def main() -> None:
   directory = f"{_args.events_path}/x86/{_args.model}/"
   LoadEvents(directory)
 
+  _zen_model = int(_args.model[6:])
+
   all_metrics = MetricGroup("", [
+      AmdUpc(),
       Idle(),
       Rapl(),
   ])
-- 
2.51.0.338.gd7d06c2dae-goog