linux-kernel - [PATCH RFC v4 13/13] perf vendor events: Add JSON metrics for imx8mm DDR Perf

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Date:   Thu, 8 Oct 2020 18:15:21 +0800
From:   John Garry <john.garry@...wei.com>
To:     <acme@...nel.org>, <will@...nel.org>, <mark.rutland@....com>,
        <jolsa@...hat.com>, <irogers@...gle.com>, <leo.yan@...aro.org>,
        <peterz@...radead.org>, <mingo@...hat.com>,
        <alexander.shishkin@...ux.intel.com>, <namhyung@...nel.org>,
        <mathieu.poirier@...aro.org>
CC:     <linuxarm@...wei.com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <qiangqing.zhang@....com>,
        <zhangshaokun@...ilicon.com>, <james.clark@....com>,
        <linux-imx@....com>, John Garry <john.garry@...wei.com>
Subject: [PATCH RFC v4 13/13] perf vendor events: Add JSON metrics for imx8mm DDR Perf

From: Joakim Zhang <qiangqing.zhang@....com>

Add JSON metrics for imx8mm DDR Perf.

Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
Signed-off-by: John Garry <john.garry@...wei.com>
---
 .../arch/arm64/freescale/imx8mm/sys/ddrc.json | 39 +++++++++++++++++++
 .../arm64/freescale/imx8mm/sys/metrics.json   | 18 +++++++++
 tools/perf/pmu-events/jevents.c               |  1 +
 3 files changed, 58 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json

diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json
new file mode 100644
index 000000000000..3404a880542d
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json
@@ -0,0 +1,39 @@
+[
+   {
+           "BriefDescription": "ddr cycles event",
+           "EventCode": "0x00",
+           "EventName": "imx8_ddr.cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr read-cycles event",
+           "EventCode": "0x2a",
+           "EventName": "imx8_ddr.read_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr write-cycles event",
+           "EventCode": "0x2b",
+           "EventName": "imx8_ddr.write_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr read event",
+           "EventCode": "0x35",
+           "EventName": "imx8_ddr.read",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr write event",
+           "EventCode": "0x38",
+           "EventName": "imx8_ddr.write",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   }
+]
+
+
diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json
new file mode 100644
index 000000000000..ec00212336de
--- /dev/null
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json
@@ -0,0 +1,18 @@
+[
+   {
+	    "BriefDescription": "bytes all masters read from ddr based on read-cycles event",
+	    "MetricName": "imx8mm_ddr_read.all",
+	    "MetricExpr": "imx8_ddr.read_cycles * 4 * 4",
+	    "ScaleUnit": "9.765625e-KB",
+	    "Unit": "imx8_ddr",
+	    "Compat": "i.MX8MM"
+    },
+   {
+	    "BriefDescription": "bytes all masters write to ddr based on write-cycles event",
+	    "MetricName": "imx8mm_ddr_write.all",
+	    "MetricExpr": "imx8_ddr.write_cycles * 4 * 4",
+	    "ScaleUnit": "9.765625e-4KB",
+	    "Unit": "imx8_ddr",
+	    "Compat": "i.MX8MM"
+    }
+]
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 2e581bd9b0a6..b4bd48b076fd 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -257,6 +257,7 @@ static struct map {
 	{ "hisi_sccl,hha", "hisi_sccl,hha" },
 	{ "hisi_sccl,l3c", "hisi_sccl,l3c" },
 	/* it's not realistic to keep adding these, we need something more scalable ... */
+	{ "imx8_ddr", "imx8_ddr" },
 	{ "smmuv3_pmcg", "smmuv3_pmcg" },
 	{ "L3PMC", "amd_l3" },
 	{}
-- 
2.26.2