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From:   Jing Zhang <renyu.zj@linux.alibaba.com>
To:     linux-arm-kernel@lists.infradead.org,
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        Namhyung Kim <namhyung@kernel.org>,
        Andrew Kilroy <andrew.kilroy@arm.com>,
        Shuai Xue <xueshuai@linux.alibaba.com>,
        Zhuo Song <zhuo.song@linux.alibaba.com>
Subject: [PATCH RFC 5/6] perf vendor events arm64: Add PE utilization metrics for neoverse-n2
Date:   Mon, 31 Oct 2022 19:11:33 +0800
Message-Id: <1667214694-89839-6-git-send-email-renyu.zj@linux.alibaba.com>
In-Reply-To: <1667214694-89839-1-git-send-email-renyu.zj@linux.alibaba.com>
References: <1667214694-89839-1-git-send-email-renyu.zj@linux.alibaba.com>
Precedence: bulk

Add PE utilization related metrics.

Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
---
 .../arch/arm64/arm/neoverse-n2/metrics.json        | 28 ++++++++++++++++++++++
 1 file changed, 28 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 6b5aaf7..230e93a 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
@@ -152,5 +152,33 @@
         "BriefDescription": "The rate of branches mis-predited to the overall branches",
         "MetricGroup": "Branch",
         "MetricName": "branch_miss_pred_rate"
+    },
+    {
+        "MetricExpr": "instructions / CPU_CYCLES",
+        "PublicDescription": "The average number of instructions executed for each cycle.",
+        "BriefDescription": "Instructions per cycle",
+        "MetricGroup": "PEutilization",
+        "MetricName": "ipc"
+    },
+    {
+        "MetricExpr": "OP_RETIRED / OP_SPEC",
+        "PublicDescription": "Fraction of operations retired",
+        "BriefDescription": "Fraction of operations retired",
+        "MetricGroup": "PEutilization",
+        "MetricName": "retired_rate"
+    },
+    {
+        "MetricExpr": "1 - OP_RETIRED / OP_SPEC",
+        "PublicDescription": "Fraction of operations wasted",
+        "BriefDescription": "Fraction of operations wasted",
+        "MetricGroup": "PEutilization",
+        "MetricName": "wasted_rate"
+    },
+    {
+        "MetricExpr": "(1 - STALL_SLOT / (CPU_CYCLES * 5)) * OP_RETIRED / OP_SPEC",
+        "PublicDescription": "Utilization of CPU",
+        "BriefDescription": "Utilization of CPU",
+        "MetricGroup": "PEutilization",
+        "MetricName": "cpu_utilization"
     }
 ]
\ No newline at end of file
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