From: John Keeping john@metanate.com
commit ab6cd0e5276e24403751e0b3b8ed807738a8571f upstream.
In the next commit we will add new fields to map_groups and we need these to be null if no value is assigned. The simplest way to achieve this is to request zeroed memory from the allocator.
Signed-off-by: John Keeping john@metanate.com Reviewed-by: Jiri Olsa jolsa@kernel.org Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Konstantin Khlebnikov khlebnikov@yandex-team.ru Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: john keeping john@metanate.com Link: http://lkml.kernel.org/r/20190815100146.28842-1-john@metanate.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Cc: Andres Freund andres@anarazel.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- tools/perf/util/map.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -637,7 +637,7 @@ bool map_groups__empty(struct map_groups
struct map_groups *map_groups__new(struct machine *machine) { - struct map_groups *mg = malloc(sizeof(*mg)); + struct map_groups *mg = zalloc(sizeof(*mg));
if (mg != NULL) map_groups__init(mg, machine);