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perf map: Use zalloc for map_groups 

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>
alistair/sunxi64-5.4-dsi
John Keeping 2019-08-15 11:01:44 +01:00 committed by Arnaldo Carvalho de Melo
parent ef4b1a539f
commit ab6cd0e527
1 changed files with 1 additions and 1 deletions
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tools/perf/util/map.c
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@ -636,7 +636,7 @@ bool map_groups__empty(struct map_groups *mg)
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);