[PATCH V1 1/4] perf vendor events: Add bandwidth metric for imx8mm
From: Joakim Zhang <hidden>
Date: 2021-01-19 02:59:56
Also in:
linux-arm-kernel
Subsystem:
freescale imx ddr pmu driver, performance events subsystem, performance events tooling arm64, the rest · Maintainers:
Frank Li, Xu Yang, Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
Add bandwidth metric for imx8mm. Signed-off-by: Joakim Zhang <redacted> --- .../arm64/freescale/imx8mm/sys/metrics.json | 20 +++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
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
index 8e553b67cae6..615be286ecaf 100644
--- a/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json
+++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/metrics.json@@ -1,4 +1,20 @@ [ + { + "BriefDescription": "bandwidth usage for lpddr4 evk board", + "MetricName": "imx8mm_bandwidth_usage.lpddr4", + "MetricExpr": "(( imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@ ) * 4 * 4 / duration_time) / (750 * 1000000 * 4 * 4)", + "ScaleUnit": "1e2%", + "Unit": "imx8_ddr", + "Compat": "i.MX8MM" + }, + { + "BriefDescription": "bandwidth usage for ddr4 evk board", + "MetricName": "imx8mm_bandwidth_usage.ddr4", + "MetricExpr": "(( imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@ ) * 4 * 4 / duration_time) / (600 * 1000000 * 4 * 4)", + "ScaleUnit": "1e2%", + "Unit": "imx8_ddr", + "Compat": "i.MX8MM" + }, { "BriefDescription": "bytes all masters read from ddr based on read-cycles event", "MetricName": "imx8mm_ddr_read.all",
@@ -6,7 +22,7 @@ "ScaleUnit": "9.765625e-4KB", "Unit": "imx8_ddr", "Compat": "i.MX8MM" - }, + }, { "BriefDescription": "bytes all masters write to ddr based on write-cycles event", "MetricName": "imx8mm_ddr_write.all",
@@ -14,5 +30,5 @@ "ScaleUnit": "9.765625e-4KB", "Unit": "imx8_ddr", "Compat": "i.MX8MM" - } + } ]
--
2.17.1