perf hist: Only allocate callchain_node if processing callchains

[safe/jmp/linux-2.6] / tools / perf / util / sort.h

diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 439ec5f..5bf2b74 100644 (file)
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -49,12 +49,12 @@ struct hist_entry {
        u64                     ip;
        char                    level;
        struct symbol     *parent;
-       struct callchain_node   callchain;
        union {
                unsigned long     position;
                struct hist_entry *pair;
                struct rb_root    sorted_chain;
        };
+       struct callchain_node   callchain[0];
 };
 
 enum sort_type {