linux-kernel - [PATCH v1 05/51] perf pmu-events: Change deprecated to be a bool

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Date:   Sun, 19 Feb 2023 01:28:02 -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 05/51] perf pmu-events: Change deprecated to be a bool

Switch to a more natural bool rather than string encoding, where NULL
implicitly meant false.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/jevents.py   |  2 +-
 tools/perf/pmu-events/pmu-events.h |  4 +++-
 tools/perf/tests/pmu-events.c      |  4 ++--
 tools/perf/util/pmu.c              | 10 ++++------
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 2b08d7c18f4b..35ca34eca74a 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -678,7 +678,7 @@ static void decompress_event(int offset, struct pmu_event *pe)
 {
 \tconst char *p = &big_c_string[offset];
 """)
-  enum_attributes = ['aggr_mode']
+  enum_attributes = ['aggr_mode', 'deprecated']
   for attr in _json_event_attributes:
     _args.output_file.write(f'\n\tpe->{attr} = ')
     if attr in enum_attributes:
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 7225efc4e4df..2434bc7cf92d 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -2,6 +2,8 @@
 #ifndef PMU_EVENTS_H
 #define PMU_EVENTS_H
 
+#include <stdbool.h>
+
 struct perf_pmu;
 
 enum aggr_mode_class {
@@ -22,7 +24,7 @@ struct pmu_event {
 	const char *pmu;
 	const char *unit;
 	const char *perpkg;
-	const char *deprecated;
+	bool deprecated;
 };
 
 struct pmu_metric {
diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c
index 9b4c94ba5460..937804c84e29 100644
--- a/tools/perf/tests/pmu-events.c
+++ b/tools/perf/tests/pmu-events.c
@@ -331,8 +331,8 @@ static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event
 		return -1;
 	}
 
-	if (!is_same(e1->deprecated, e2->deprecated)) {
-		pr_debug2("testing event e1 %s: mismatched deprecated, %s vs %s\n",
+	if (e1->deprecated != e2->deprecated) {
+		pr_debug2("testing event e1 %s: mismatched deprecated, %d vs %d\n",
 			  e1->name, e1->deprecated, e2->deprecated);
 		return -1;
 	}
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index c256b29defad..80644e25a568 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -331,14 +331,15 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
 	int num;
 	char newval[256];
 	char *long_desc = NULL, *topic = NULL, *unit = NULL, *perpkg = NULL,
-	     *deprecated = NULL, *pmu_name = NULL;
+	     *pmu_name = NULL;
+	bool deprecated = false;
 
 	if (pe) {
 		long_desc = (char *)pe->long_desc;
 		topic = (char *)pe->topic;
 		unit = (char *)pe->unit;
 		perpkg = (char *)pe->perpkg;
-		deprecated = (char *)pe->deprecated;
+		deprecated = pe->deprecated;
 		pmu_name = (char *)pe->pmu;
 	}
 
@@ -351,7 +352,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
 	alias->unit[0] = '\0';
 	alias->per_pkg = false;
 	alias->snapshot = false;
-	alias->deprecated = false;
+	alias->deprecated = deprecated;
 
 	ret = parse_events_terms(&alias->terms, val);
 	if (ret) {
@@ -405,9 +406,6 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
 	alias->str = strdup(newval);
 	alias->pmu_name = pmu_name ? strdup(pmu_name) : NULL;
 
-	if (deprecated)
-		alias->deprecated = true;
-
 	if (!perf_pmu_merge_alias(alias, list))
 		list_add_tail(&alias->list, list);
 
-- 
2.39.2.637.g21b0678d19-goog