linux-kernel - [PATCH v1 13/13] perf jevents: Add cycles breakdown metric for AMD

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Date: Wed, 28 Feb 2024 16:15:37 -0800
From: Ian Rogers <irogers@...gle.com>
To: Sandipan Das <sandipan.das@....com>, Ravi Bangoria <ravi.bangoria@....com>, 
	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	John Garry <john.g.garry@...cle.com>, Kan Liang <kan.liang@...ux.intel.com>, 
	Jing Zhang <renyu.zj@...ux.alibaba.com>, Thomas Richter <tmricht@...ux.ibm.com>, 
	James Clark <james.clark@....com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, Stephane Eranian <eranian@...gle.com>
Subject: [PATCH v1 13/13] perf jevents: Add cycles breakdown metric for AMD

Breakdown cycles to user, kernel and guest.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/amd_metrics.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py
index 377ce413d051..2def2adf232e 100755
--- a/tools/perf/pmu-events/amd_metrics.py
+++ b/tools/perf/pmu-events/amd_metrics.py
@@ -572,6 +572,24 @@ def AmdUpc() -> Metric:
   return Metric("upc", "Micro-ops retired per core cycle (higher is better)",
                 upc, "uops/cycle")
 
+
+def Cycles() -> MetricGroup:
+  cyc_k = Event("cycles:kHh")
+  cyc_g = Event("cycles:G")
+  cyc_u = Event("cycles:uH")
+  cyc = cyc_k + cyc_g + cyc_u
+
+  return MetricGroup("cycles", [
+      Metric("cycles_total", "Total number of cycles", cyc, "cycles"),
+      Metric("cycles_user", "User cycles as a percentage of all cycles",
+             d_ratio(cyc_u, cyc), "100%"),
+      Metric("cycles_kernel", "Kernel cycles as a percentage of all cycles",
+             d_ratio(cyc_k, cyc), "100%"),
+      Metric("cycles_guest", "Hypervisor guest cycles as a percentage of all cycles",
+             d_ratio(cyc_g, cyc), "100%"),
+  ], description = "cycles breakdown per privilege level (users, kernel, guest)")
+
+
 def Idle() -> Metric:
   cyc = Event("msr/mperf/")
   tsc = Event("msr/tsc/")
@@ -628,6 +646,7 @@ all_metrics = MetricGroup("", [
     AmdHwpf(),
     AmdSwpf(),
     AmdUpc(),
+    Cycles(),
     Idle(),
     Rapl(),
     UncoreL3(),
-- 
2.44.0.278.ge034bb2e1d-goog