From cddfb3611275697b88031c473d656dc27da34480 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 31 Oct 2025 09:26:37 -0700 Subject: [PATCH] perf vendor power9 nest metrics: Correct unit from MB to MiB 6.1e-5 is very close to 1/16384, where 16384 is 2^14, i.e. a power of 2. When units are in powers of 2 the IEC unit is MiB (mebibytes) rather than MB (megabytes) where the values are powers of 10. This patch corrects the unit for uniformity and because such units may be pattern matched against. Reviewed-by: Madhavan Srinivasan Signed-off-by: Ian Rogers Cc: Athira Rajeev Cc: Kajol Jain Link: https://lore.kernel.org/r/20251031162637.1456191-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- .../perf/pmu-events/arch/powerpc/power9/nest_metrics.json | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/perf/pmu-events/arch/powerpc/power9/nest_metrics.json b/tools/perf/pmu-events/arch/powerpc/power9/nest_metrics.json index 7a5d1bf543f8..8d028a7c2777 100644 --- a/tools/perf/pmu-events/arch/powerpc/power9/nest_metrics.json +++ b/tools/perf/pmu-events/arch/powerpc/power9/nest_metrics.json @@ -29,25 +29,25 @@ "MetricExpr" : "nest_mcs01_imc@PM_MCS01_128B_RD_DISP_PORT01@ + nest_mcs01_imc@PM_MCS01_128B_RD_DISP_PORT23@", "MetricName" : "mcs01-read", "MetricGroup" : "memory-bandwidth", - "ScaleUnit": "6.1e-5MB" + "ScaleUnit": "6.1e-5MiB" }, { "MetricExpr" : "nest_mcs23_imc@PM_MCS23_128B_RD_DISP_PORT01@ + nest_mcs23_imc@PM_MCS23_128B_RD_DISP_PORT23@", "MetricName" : "mcs23-read", "MetricGroup" : "memory-bandwidth", - "ScaleUnit": "6.1e-5MB" + "ScaleUnit": "6.1e-5MiB" }, { "MetricExpr" : "nest_mcs01_imc@PM_MCS01_128B_WR_DISP_PORT01@ + nest_mcs01_imc@PM_MCS01_128B_WR_DISP_PORT23@", "MetricName" : "mcs01-write", "MetricGroup" : "memory-bandwidth", - "ScaleUnit": "6.1e-5MB" + "ScaleUnit": "6.1e-5MiB" }, { "MetricExpr" : "nest_mcs23_imc@PM_MCS23_128B_WR_DISP_PORT01@ + nest_mcs23_imc@PM_MCS23_128B_WR_DISP_PORT23@", "MetricName" : "mcs23-write", "MetricGroup" : "memory-bandwidth", - "ScaleUnit": "6.1e-5MB" + "ScaleUnit": "6.1e-5MiB" }, { "MetricExpr" : "nest_powerbus0_imc@PM_PB_CYC@", -- 2.47.3