perf cpumap: Remove refcnt from 'struct cpu_aggr_map'

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

Signed-off-by: Ian Rogers <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Andi Kleen <[e-mail]>
Cc: Athira Rajeev <[e-mail]>
Cc: Ben Gainey <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: K Prateek Nayak <[e-mail]>
Cc: Kajol Jain <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Li Dong <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Oliver Upton <[e-mail]>
Cc: Paran Lee <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Ravi Bangoria <[e-mail]>
Cc: Sun Haiyong <[e-mail]>
Cc: Tim Chen <[e-mail]>
Cc: Yanteng Si <[e-mail]>
Cc: Yicong Yang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-stat.c

···
 
 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;
 }

tools/perf/util/cpumap.c

···
 		cpus->nr = nr;
 		for (i = 0; i < nr; i++)
 			cpus->map[i] = aggr_cpu_id__empty();
-
-		refcount_set(&cpus->refcnt, 1);
 	}
 
 	return cpus;

tools/perf/util/cpumap.h

···
 #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 {
···
 
 /** 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. */