[PATCH v5 3/9] perf srcline: Introduce inline_node__clear_frames()

[Ian Rogers <irogers@google.com>]

Introduce inline_node__clear_frames() to clean up partial allocations.
This is a prerequisite for error handling in libdw inline unwinding.

Signed-off-by: Ian Rogers <irogers@google.com>
---
v5:
 - Split from original Patch 3/6 into its own commit.
---
 tools/perf/util/srcline.c | 9 ++++++++-
 tools/perf/util/srcline.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index db164d258163..62884428fb5a 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -429,10 +429,13 @@ struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr,
 	return addr2inlines(dso_name, addr, dso, sym);
 }
 
-void inline_node__delete(struct inline_node *node)
+void inline_node__clear_frames(struct inline_node *node)
 {
 	struct inline_list *ilist, *tmp;
 
+	if (node == NULL)
+		return;
+
 	list_for_each_entry_safe(ilist, tmp, &node->val, list) {
 		list_del_init(&ilist->list);
 		zfree_srcline(&ilist->srcline);
@@ -441,7 +444,11 @@ void inline_node__delete(struct inline_node *node)
 			symbol__delete(ilist->symbol);
 		free(ilist);
 	}
+}
 
+void inline_node__delete(struct inline_node *node)
+{
+	inline_node__clear_frames(node);
 	free(node);
 }
 
diff --git a/tools/perf/util/srcline.h b/tools/perf/util/srcline.h
index 7c37b3bf9ce7..1018cbc886d6 100644
--- a/tools/perf/util/srcline.h
+++ b/tools/perf/util/srcline.h
@@ -47,6 +47,7 @@ struct inline_node *dso__parse_addr_inlines(struct dso *dso, u64 addr,
 					    struct symbol *sym);
 /* free resources associated to the inline node list */
 void inline_node__delete(struct inline_node *node);
+void inline_node__clear_frames(struct inline_node *node);
 
 /* insert the inline node list into the DSO, which will take ownership */
 void inlines__tree_insert(struct rb_root_cached *tree,
-- 
2.54.0.545.g6539524ca2-goog