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Date: Tue,  7 May 2024 11:35:41 -0700
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Subject: [PATCH v1 4/8] perf cpumap: Remove refcnt from cpu_aggr_map
From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, 
	Arnaldo Carvalho de Melo <acme@kernel.org>, Namhyung Kim <namhyung@kernel.org>, 
	Mark Rutland <mark.rutland@arm.com>, 
	Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, 
	Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, 
	Kan Liang <kan.liang@linux.intel.com>, Oliver Upton <oliver.upton@linux.dev>, 
	James Clark <james.clark@arm.com>, Tim Chen <tim.c.chen@linux.intel.com>, 
	Yicong Yang <yangyicong@hisilicon.com>, K Prateek Nayak <kprateek.nayak@amd.com>, 
	Yanteng Si <siyanteng@loongson.cn>, Sun Haiyong <sunhaiyong@loongson.cn>, 
	Kajol Jain <kjain@linux.ibm.com>, Ravi Bangoria <ravi.bangoria@amd.com>, Li Dong <lidong@vivo.com>, 
	Paran Lee <p4ranlee@gmail.com>, Ben Gainey <ben.gainey@arm.com>, Andi Kleen <ak@linux.intel.com>, 
	Athira Rajeev <atrajeev@linux.vnet.ibm.com>, linux-kernel@vger.kernel.org, 
	linux-perf-users@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"

It is assigned a value of 1 and never incremented. Remove and replace
puts with delete.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/builtin-stat.c | 16 +++-------------
 tools/perf/util/cpumap.c  |  2 --
 tools/perf/util/cpumap.h  |  2 --
 3 files changed, 3 insertions(+), 17 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 65a3dd7ffac3..35f79b48e8dc 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1631,23 +1631,13 @@ static int perf_stat_init_aggr_mode(void)
 
 static void cpu_aggr_map__delete(struct cpu_aggr_map *map)
 {
-	if (map) {
-		WARN_ONCE(refcount_read(&map->refcnt) != 0,
-			  "cpu_aggr_map refcnt unbalanced\n");
-		free(map);
-	}
-}
-
-static void cpu_aggr_map__put(struct cpu_aggr_map *map)
-{
-	if (map && refcount_dec_and_test(&map->refcnt))
-		cpu_aggr_map__delete(map);
+	free(map);
 }
 
 static void perf_stat__exit_aggr_mode(void)
 {
-	cpu_aggr_map__put(stat_config.aggr_map);
-	cpu_aggr_map__put(stat_config.cpus_aggr_map);
+	cpu_aggr_map__delete(stat_config.aggr_map);
+	cpu_aggr_map__delete(stat_config.cpus_aggr_map);
 	stat_config.aggr_map = NULL;
 	stat_config.cpus_aggr_map = NULL;
 }
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 6a270d640acb..27094211edd8 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -180,8 +180,6 @@ struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr)
 		cpus->nr = nr;
 		for (i = 0; i < nr; i++)
 			cpus->map[i] = aggr_cpu_id__empty();
-
-		refcount_set(&cpus->refcnt, 1);
 	}
 
 	return cpus;
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index 26cf76c693f5..ee0f6139b04a 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -5,7 +5,6 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <perf/cpumap.h>
-#include <linux/refcount.h>
 
 /** Identify where counts are aggregated, -1 implies not to aggregate. */
 struct aggr_cpu_id {
@@ -37,7 +36,6 @@ struct aggr_cpu_id {
 
 /** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */
 struct cpu_aggr_map {
-	refcount_t refcnt;
 	/** Number of valid entries. */
 	int nr;
 	/** The entries. */
-- 
2.45.0.rc1.225.g2a3ae87e7f-goog