linux-kernel - [PATCH v8 8/8] perf vendor events arm64:: Add i.MX93 DDR Performance Monitor metrics

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Date: Fri, 22 Mar 2024 14:39:30 +0800
From: Xu Yang <xu.yang_2@....com>
To: frank.li@....com,
	will@...nel.org,
	mark.rutland@....com,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
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	kernel@...gutronix.de,
	festevam@...il.com,
	john.g.garry@...cle.com,
	jolsa@...nel.org,
	namhyung@...nel.org,
	irogers@...gle.com
Cc: mike.leach@...aro.org,
	peterz@...radead.org,
	mingo@...hat.com,
	acme@...nel.org,
	alexander.shishkin@...ux.intel.com,
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	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
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	linux-perf-users@...r.kernel.org,
	imx@...ts.linux.dev
Subject: [PATCH v8 8/8] perf vendor events arm64:: Add i.MX93 DDR Performance Monitor metrics

Add JSON metrics for i.MX93 DDR Performance Monitor.

Signed-off-by: Xu Yang <xu.yang_2@....com>

---
Changes in v7:
 - new patch
Changes in v8:
 - no changes
---
 .../arch/arm64/freescale/imx93/sys/ddrc.json  |  9 +++++++
 .../arm64/freescale/imx93/sys/metrics.json    | 26 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/ddrc.json
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/metrics.json

diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/ddrc.json b/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/ddrc.json
new file mode 100644
index 000000000000..eeeae4d49fce
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/ddrc.json
@@ -0,0 +1,9 @@
+[
+   {
+           "BriefDescription": "ddr cycles event",
+           "EventCode": "0x00",
+           "EventName": "imx93_ddr.cycles",
+           "Unit": "imx9_ddr",
+           "Compat": "imx93"
+   }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/metrics.json b/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/metrics.json
new file mode 100644
index 000000000000..4d2454ca1259
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx93/sys/metrics.json
@@ -0,0 +1,26 @@
+[
+   {
+	    "BriefDescription": "bandwidth usage for lpddr4x evk board",
+	    "MetricName": "imx93_bandwidth_usage.lpddr4x",
+	    "MetricExpr": "(((( imx9_ddr0@...c_pm_0@ ) * 2 * 8 ) + (( imx9_ddr0@...c_pm_3@ + imx9_ddr0@...c_pm_5@ + imx9_ddr0@...c_pm_7@ + imx9_ddr0@...c_pm_9@ - imx9_ddr0@...c_pm_2@ - imx9_ddr0@...c_pm_4@ - imx9_ddr0@...c_pm_6@ - imx9_ddr0@...c_pm_8@ ) * 32 )) / duration_time) / (3733 * 1000000 * 2)",
+	    "ScaleUnit": "1e2%",
+	    "Unit": "imx9_ddr",
+	    "Compat": "imx93"
+   },
+   {
+	    "BriefDescription": "bytes all masters read from ddr",
+	    "MetricName": "imx93_ddr_read.all",
+	    "MetricExpr": "( imx9_ddr0@...c_pm_0@ ) * 2 * 8",
+	    "ScaleUnit": "9.765625e-4KB",
+	    "Unit": "imx9_ddr",
+	    "Compat": "imx93"
+   },
+   {
+	    "BriefDescription": "bytes all masters write to ddr",
+	    "MetricName": "imx93_ddr_write.all",
+	    "MetricExpr": "( imx9_ddr0@...c_pm_3@ + imx9_ddr0@...c_pm_5@ + imx9_ddr0@...c_pm_7@ + imx9_ddr0@...c_pm_9@ - imx9_ddr0@...c_pm_2@ - imx9_ddr0@...c_pm_4@ - imx9_ddr0@...c_pm_6@ - imx9_ddr0@...c_pm_8@ ) * 32",
+	    "ScaleUnit": "9.765625e-4KB",
+	    "Unit": "imx9_ddr",
+	    "Compat": "imx93"
+   }
+]
-- 
2.34.1