linux-kernel - [PATCH v1 04/51] perf pmu-events: Change aggr

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Message-Id: <20230219092848.639226-5-irogers@google.com>
Date:   Sun, 19 Feb 2023 01:28:01 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        Sandipan Das <sandipan.das@....com>,
        James Clark <james.clark@....com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.g.garry@...cle.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Eduard Zingerman <eddyz87@...il.com>,
        Suzuki Poulouse <suzuki.poulose@....com>,
        Leo Yan <leo.yan@...aro.org>,
        Florian Fischer <florian.fischer@...q.space>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Perry Taylor <perry.taylor@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>
Cc:     Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH v1 04/51] perf pmu-events: Change aggr_mode to be an enum

Rather than use a string to encode aggr_mode, use an enum value.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/arch/powerpc/util/header.c |  2 +-
 tools/perf/pmu-events/jevents.py      | 17 +++++++++++------
 tools/perf/pmu-events/pmu-events.h    |  2 +-
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 78eef77d8a8d..c8d0dc775e5d 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -45,6 +45,6 @@ int arch_get_runtimeparam(const struct pmu_metric *pm)
 	int count;
 	char path[PATH_MAX] = "/devices/hv_24x7/interface/";
 
-	atoi(pm->aggr_mode) == PerChip ? strcat(path, "sockets") : strcat(path, "coresperchip");
+	strcat(path, pm->aggr_mode == PerChip ? "sockets" : "coresperchip");
 	return sysfs__read_int(path, &count) < 0 ? 1 : count;
 }
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index db8b92de113e..2b08d7c18f4b 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -678,10 +678,13 @@ static void decompress_event(int offset, struct pmu_event *pe)
 {
 \tconst char *p = &big_c_string[offset];
 """)
+  enum_attributes = ['aggr_mode']
   for attr in _json_event_attributes:
-    _args.output_file.write(f"""
-\tpe->{attr} = (*p == '\\0' ? NULL : p);
-""")
+    _args.output_file.write(f'\n\tpe->{attr} = ')
+    if attr in enum_attributes:
+      _args.output_file.write("(*p == '\\0' ? 0 : *p - '0');\n")
+    else:
+      _args.output_file.write("(*p == '\\0' ? NULL : p);\n")
     if attr == _json_event_attributes[-1]:
       continue
     _args.output_file.write('\twhile (*p++);')
@@ -692,9 +695,11 @@ static void decompress_metric(int offset, struct pmu_metric *pm)
 \tconst char *p = &big_c_string[offset];
 """)
   for attr in _json_metric_attributes:
-    _args.output_file.write(f"""
-\tpm->{attr} = (*p == '\\0' ? NULL : p);
-""")
+    _args.output_file.write(f'\n\tpm->{attr} = ')
+    if attr in enum_attributes:
+      _args.output_file.write("(*p == '\\0' ? 0 : *p - '0');\n")
+    else:
+      _args.output_file.write("(*p == '\\0' ? NULL : p);\n")
     if attr == _json_metric_attributes[-1]:
       continue
     _args.output_file.write('\twhile (*p++);')
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index cee8b83792f8..7225efc4e4df 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -31,10 +31,10 @@ struct pmu_metric {
 	const char *metric_expr;
 	const char *unit;
 	const char *compat;
-	const char *aggr_mode;
 	const char *metric_constraint;
 	const char *desc;
 	const char *long_desc;
+	enum aggr_mode_class aggr_mode;
 };
 
 struct pmu_events_table;
-- 
2.39.2.637.g21b0678d19-goog