linux-kernel - [PATCH v3 5/6] perf vendor events arm64: Add PE utilization metrics for neoverse-n2

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Message-Id: <1669310088-13482-6-git-send-email-renyu.zj@linux.alibaba.com>
Date:   Fri, 25 Nov 2022 01:14:47 +0800
From:   Jing Zhang <renyu.zj@...ux.alibaba.com>
To:     John Garry <john.g.garry@...cle.com>,
        Ian Rogers <irogers@...gle.com>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Andrew Kilroy <andrew.kilroy@....com>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        Zhuo Song <zhuo.song@...ux.alibaba.com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>
Subject: [PATCH v3 5/6] perf vendor events arm64: Add PE utilization metrics for neoverse-n2

Add PE utilization related metrics.

Signed-off-by: Jing Zhang <renyu.zj@...ux.alibaba.com>
---
 .../arch/arm64/arm/neoverse-n2/metrics.json        | 45 ++++++++++++++++++++++
 1 file changed, 45 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 23c7d62..7b54819 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
@@ -189,5 +189,50 @@
         "MetricGroup": "Branch",
         "MetricName": "branch_miss_pred_rate",
         "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "instructions / CPU_CYCLES",
+        "PublicDescription": "The average number of instructions executed for each cycle.",
+        "BriefDescription": "Instructions per cycle",
+        "MetricGroup": "PEutilization",
+        "MetricName": "ipc"
+    },
+    {
+        "MetricExpr": "INST_RETIRED / CPU_CYCLES",
+        "PublicDescription": "Architecturally executed Instructions Per Cycle (IPC)",
+        "BriefDescription": "Architecturally executed Instructions Per Cycle (IPC)",
+        "MetricGroup": "PEutilization",
+        "MetricName": "retired_ipc"
+    },
+    {
+        "MetricExpr": "INST_SPEC / CPU_CYCLES",
+        "PublicDescription": "Speculatively executed Instructions Per Cycle (IPC)",
+        "BriefDescription": "Speculatively executed Instructions Per Cycle (IPC)",
+        "MetricGroup": "PEutilization",
+        "MetricName": "spec_ipc"
+    },
+    {
+        "MetricExpr": "OP_RETIRED / OP_SPEC",
+        "PublicDescription": "Fraction of operations retired",
+        "BriefDescription": "Fraction of operations retired",
+        "MetricGroup": "PEutilization",
+        "MetricName": "retired_rate",
+        "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "1 - OP_RETIRED / OP_SPEC",
+        "PublicDescription": "Fraction of operations wasted",
+        "BriefDescription": "Fraction of operations wasted",
+        "MetricGroup": "PEutilization",
+        "MetricName": "wasted_rate",
+        "ScaleUnit": "100%"
+    },
+    {
+        "MetricExpr": "OP_RETIRED / OP_SPEC * (1 - (STALL_SLOT - CPU_CYCLES) / (CPU_CYCLES * 5))",
+        "PublicDescription": "Utilization of CPU",
+        "BriefDescription": "Utilization of CPU",
+        "MetricGroup": "PEutilization",
+        "MetricName": "cpu_utilization",
+        "ScaleUnit": "100%"
     }
 ]
-- 
1.8.3.1