[PATCH 21/22] perf cpumap: Trim the cpu_aggr_map

[Ian Rogers]

cpu_aggr_map__new removes duplicates, when this happens shrink the
array.

Signed-off-by: Ian Rogers <irogers at google.com>
---
 tools/perf/util/cpumap.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 8a72ee996722..985c87f1f1ca 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -185,7 +185,12 @@ struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus,
 			c->nr++;
 		}
 	}
-
+	/* Trim. */
+	if (c->nr != cpus->nr) {
+		c = realloc(c, sizeof(struct cpu_aggr_map) + sizeof(struct aggr_cpu_id) * c->nr);
+		if (!c)
+			return NULL;
+	}
 	/* ensure we process id in increasing order */
 	qsort(c->map, c->nr, sizeof(struct aggr_cpu_id), aggr_cpu_id__cmp);
 
-- 
2.34.1.400.ga245620fadb-goog