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From:   Jing Zhang <renyu.zj@linux.alibaba.com>
To:     John Garry <john.g.garry@oracle.com>,
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        Zhuo Song <zhuo.song@linux.alibaba.com>,
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Subject: [PATCH v4 4/4] perf vendor events: Add metrics for Arm CMN
Date:   Sun, 23 Jul 2023 16:21:53 +0800
Message-Id: <1690100513-61165-5-git-send-email-renyu.zj@linux.alibaba.com>
In-Reply-To: <1690100513-61165-1-git-send-email-renyu.zj@linux.alibaba.com>
References: <1690100513-61165-1-git-send-email-renyu.zj@linux.alibaba.com>
Precedence: bulk

Add JSON metrics for Arm CMN. Currently just add part of CMN PMU
metrics which are general and compatible for any SoC with CMN-ANY.

Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
---
 .../pmu-events/arch/arm64/arm/cmn/sys/metric.json  | 74 ++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json

diff --git a/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json b/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json
new file mode 100644
index 0000000..64db534
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/arm/cmn/sys/metric.json
@@ -0,0 +1,74 @@
+[
+	{
+		"MetricName": "slc_miss_rate",
+		"BriefDescription": "The system level cache miss rate.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "hnf_cache_miss / hnf_slc_sf_cache_access",
+		"ScaleUnit": "100%",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "hnf_message_retry_rate",
+		"BriefDescription": "HN-F message retry rate indicates whether a lack of credits is causing the bottlenecks.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "hnf_pocq_retry / hnf_pocq_reqs_recvd",
+		"ScaleUnit": "100%",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "sf_hit_rate",
+		"BriefDescription": "Snoop filter hit rate can be used to measure the snoop filter efficiency.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "hnf_sf_hit / hnf_slc_sf_cache_access",
+		"ScaleUnit": "100%",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "mc_message_retry_rate",
+		"BriefDescription": "The memory controller request retries rate indicates whether the memory controller is the bottleneck.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "hnf_mc_retries / hnf_mc_reqs",
+		"ScaleUnit": "100%",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "rni_actual_read_bandwidth.all",
+		"BriefDescription": "This event measure the actual bandwidth that RN-I bridge sends to the interconnect.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "rnid_rxdat_flits * 32 / 1e6 / duration_time",
+		"ScaleUnit": "1MB/s",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "rni_actual_write_bandwidth.all",
+		"BriefDescription": "This event measures the actual write bandwidth at RN-I bridges.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "rnid_txdat_flits * 32 / 1e6 / duration_time",
+		"ScaleUnit": "1MB/s",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "rni_retry_rate",
+		"BriefDescription": "RN-I bridge retry rate indicates whether the memory controller is the bottleneck.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "rnid_txreq_flits_retried / rnid_txreq_flits_total",
+		"ScaleUnit": "100%",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	},
+	{
+		"MetricName": "sbsx_actual_write_bandwidth.all",
+		"BriefDescription": "sbsx actual write bandwidth.",
+		"MetricGroup": "cmn",
+		"MetricExpr": "sbsx_txdat_flitv * 32 / 1e6 / duration_time",
+		"ScaleUnit": "1MB/s",
+		"Unit": "arm_cmn",
+		"Compat": "434*;436*;43c*;43a*"
+	}
+]
-- 
1.8.3.1