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From:   Jing Zhang <renyu.zj@linux.alibaba.com>
To:     linux-arm-kernel@lists.infradead.org,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
        John Garry <john.garry@huawei.com>,
        Will Deacon <will@kernel.org>,
        James Clark <james.clark@arm.com>,
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        Leo Yan <leo.yan@linaro.org>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Andrew Kilroy <andrew.kilroy@arm.com>,
        Shuai Xue <xueshuai@linux.alibaba.com>,
        Zhuo Song <zhuo.song@linux.alibaba.com>,
        Jing Zhang <renyu.zj@linux.alibaba.com>
Subject: [RFC PATCH v2 4/6] perf vendor events arm64: Add branch metrics for neoverse-n2
Date:   Mon, 14 Nov 2022 15:41:58 +0800
Message-Id: <1668411720-3581-5-git-send-email-renyu.zj@linux.alibaba.com>
In-Reply-To: <1668411720-3581-1-git-send-email-renyu.zj@linux.alibaba.com>
References: <1668411720-3581-1-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 branch related metrics.

Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
---
 .../arch/arm64/arm/neoverse-n2/metrics.json         | 21 +++++++++++++++++++++
 1 file changed, 21 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 1690ef6..e960a66 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"
     }
 ]
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