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| author | Namhyung Kim <namhyung@kernel.org> | 2016-02-16 14:08:23 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-02-19 22:14:36 (GMT) |
| commit | f2bb4c5af4fe16d8b1e4ae371e1ceaa817380a88 (patch) | |
| tree | 4e81ae51fa21afc247e0c4ab375f790c3149c36a /tools/perf/util/callchain.c | |
| parent | 2d713b809d89a3d10c6a85162bf7cce0468e45d9 (diff) | |
| download | linux-f2bb4c5af4fe16d8b1e4ae371e1ceaa817380a88.tar.xz | |
perf callchain: Check return value of split_add_child()
Now create_child() and add_child() return errors so check and pass it
to the caller.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1455631723-17345-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/callchain.c')
| -rw-r--r-- | tools/perf/util/callchain.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index dab2c1f..5259379 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -508,7 +508,7 @@ static enum match_result match_chain(struct callchain_cursor_node *node, * give a part of its callchain to the created child. * Then create another child to host the given callchain of new branch */ -static void +static int split_add_child(struct callchain_node *parent, struct callchain_cursor *cursor, struct callchain_list *to_split, @@ -520,6 +520,8 @@ split_add_child(struct callchain_node *parent, /* split */ new = create_child(parent, true); + if (new == NULL) + return -1; /* split the callchain and move a part to the new child */ old_tail = parent->val.prev; @@ -554,7 +556,7 @@ split_add_child(struct callchain_node *parent, node = callchain_cursor_current(cursor); new = add_child(parent, cursor, period); if (new == NULL) - return; + return -1; /* * This is second child since we moved parent's children @@ -576,6 +578,7 @@ split_add_child(struct callchain_node *parent, parent->hit = period; parent->count = 1; } + return 0; } static enum match_result @@ -670,7 +673,10 @@ append_chain(struct callchain_node *root, /* we match only a part of the node. Split it and add the new chain */ if (matches < root->val_nr) { - split_add_child(root, cursor, cnode, start, matches, period); + if (split_add_child(root, cursor, cnode, start, matches, + period) < 0) + return MATCH_ERROR; + return MATCH_EQ; } |