[PATCH 2/8] perf tools: Add error path into hist_entry__init

Jiri Olsa
2019-03-05T15:25:49Z

Adding error path into hist_entry__init to unify error
handling, so every new member does not need to free
everything else.

Link: http://lkml.kernel.org/n/tip-v0ssws4hsr0tozb7lm0k5f70@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/hist.c | 39 +++++++++++++++++++--------------------
1 file changed, 19 insertions(+), 20 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 669f961316f0..74e307d17c49 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -396,11 +396,8 @@ static int hist_entry__init(struct hist_entry *he,
* adding new entries. So we need to save a copy.
*/
he->branch_info = malloc(sizeof(*he->branch_info));
- if (he->branch_info == NULL) {
- map__zput(he->ms.map);
- free(he->stat_acc);
- return -ENOMEM;
- }
+ if (he->branch_info == NULL)
+ goto err;

memcpy(he->branch_info, template->branch_info,
sizeof(*he->branch_info));
@@ -419,21 +416,8 @@ static int hist_entry__init(struct hist_entry *he,

if (he->raw_data) {
he->raw_data = memdup(he->raw_data, he->raw_size);
-
- if (he->raw_data == NULL) {
- map__put(he->ms.map);
- if (he->branch_info) {
- map__put(he->branch_info->from.map);
- map__put(he->branch_info->to.map);
- free(he->branch_info);
- }
- if (he->mem_info) {
- map__put(he->mem_info->iaddr.map);
- map__put(he->mem_info->daddr.map);
- }
- free(he->stat_acc);
- return -ENOMEM;
- }
+ if (he->raw_data == NULL)
+ goto err_infos;
}
INIT_LIST_HEAD(&he->pairs.node);
thread__get(he->thread);
@@ -444,6 +428,21 @@ static int hist_entry__init(struct hist_entry *he,
he->leaf = true;

return 0;
+
+err_infos:
+ if (he->branch_info) {
+ map__put(he->branch_info->from.map);
+ map__put(he->branch_info->to.map);
+ free(he->branch_info);
+ }
+ if (he->mem_info) {
+ map__put(he->mem_info->iaddr.map);
+ map__put(he->mem_info->daddr.map);
+ }
+err:
+ map__zput(he->ms.map);
+ free(he->stat_acc);
+ return -ENOMEM;
}

static void *hist_entry__zalloc(size_t size)
--
2.17.2