linux-kernel - [PATCH V3 2/4] perf vendor events: Add JSON metrics for imx8mn DDR Perf

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Message-Id: <20210127105734.12198-3-qiangqing.zhang@nxp.com>
Date:   Wed, 27 Jan 2021 18:57:32 +0800
From:   Joakim Zhang <qiangqing.zhang@....com>
To:     john.garry@...wei.com, will@...nel.org, mathieu.poirier@...aro.org,
        leo.yan@...aro.org, peterz@...radead.org, mingo@...hat.com,
        acme@...nel.org, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        kjain@...ux.ibm.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V3 2/4] perf vendor events: Add JSON metrics for imx8mn DDR Perf

Add JSON metrics for imx8mn DDR Perf.

Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
---
 .../arch/arm64/freescale/imx8mn/sys/ddrc.json | 37 +++++++++++++++++++
 .../arm64/freescale/imx8mn/sys/metrics.json   | 18 +++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/ddrc.json
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/metrics.json

diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/ddrc.json b/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/ddrc.json
new file mode 100644
index 000000000000..8352e73d6d35
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/ddrc.json
@@ -0,0 +1,37 @@
+[
+   {
+           "BriefDescription": "ddr cycles event",
+           "EventCode": "0x00",
+           "EventName": "imx8mn_ddr.cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MN"
+   },
+   {
+           "BriefDescription": "ddr read-cycles event",
+           "EventCode": "0x2a",
+           "EventName": "imx8mn_ddr.read_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MN"
+   },
+   {
+           "BriefDescription": "ddr write-cycles event",
+           "EventCode": "0x2b",
+           "EventName": "imx8mn_ddr.write_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MN"
+   },
+   {
+           "BriefDescription": "ddr read event",
+           "EventCode": "0x35",
+           "EventName": "imx8mn_ddr.read",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MN"
+   },
+   {
+           "BriefDescription": "ddr write event",
+           "EventCode": "0x38",
+           "EventName": "imx8mn_ddr.write",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MN"
+   }
+]
diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/metrics.json b/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/metrics.json
new file mode 100644
index 000000000000..2bbba4d8ea5b
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mn/sys/metrics.json
@@ -0,0 +1,18 @@
+[
+   {
+	    "BriefDescription": "bytes all masters read from ddr based on read-cycles event",
+	    "MetricName": "imx8mn_ddr_read.all",
+	    "MetricExpr": "imx8mn_ddr.read_cycles * 4 * 2",
+	    "ScaleUnit": "9.765625e-4KB",
+	    "Unit": "imx8_ddr",
+	    "Compat": "i.MX8MN"
+   },
+   {
+	    "BriefDescription": "bytes all masters write to ddr based on write-cycles event",
+	    "MetricName": "imx8mn_ddr_write.all",
+	    "MetricExpr": "imx8mn_ddr.write_cycles * 4 * 2",
+	    "ScaleUnit": "9.765625e-4KB",
+	    "Unit": "imx8_ddr",
+	    "Compat": "i.MX8MN"
+   }
+]
-- 
2.17.1