[tip:perf/core] perf tools: Unlink entries from terms list

[tip-bot for Wang Nan]

Commit-ID:  a8adfceb389a0045e06af22517fa3326797b160a
Gitweb:     http://git.kernel.org/tip/a8adfceb389a0045e06af22517fa3326797b160a
Author:     Wang Nan <wangnan0@xxxxxxxxxx>
AuthorDate: Fri, 12 Feb 2016 16:31:23 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 12 Feb 2016 16:51:15 -0300

perf tools: Unlink entries from terms list

We were just freeing them, better unlink and init its nodes to catch
bugs faster if we keep dangling references to them.

Signed-off-by: Wang Nan <wangnan0@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: He Kuang <hekuang@xxxxxxxxxx>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Zefan Li <lizefan@xxxxxxxxxx>
Cc: pi3orama@xxxxxxx
[ Spun off from another patch, use list_del_init() instead of list_del() ]
Link: http://lkml.kernel.org/r/1454680939-24963-2-git-send-email-wangnan0@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/parse-events.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 813d9b2..133c8d2 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2072,8 +2072,10 @@ void parse_events__free_terms(struct list_head *terms)
 {
 	struct parse_events_term *term, *h;
 
-	list_for_each_entry_safe(term, h, terms, list)
+	list_for_each_entry_safe(term, h, terms, list) {
+		list_del_init(&term->list);
 		free(term);
+	}
 }
 
 void parse_events_evlist_error(struct parse_events_evlist *data,