perf-counter: initialize perf counter shash before use

Private variable perf_counters needs to be initialized before
use. Otherwise,  perf_counter_init() call will cause crashes.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>

diff --git a/lib/perf-counter.c b/lib/perf-counter.c
index 8c859cc..62e2d76 100644 (file)
--- a/lib/perf-counter.c
+++ b/lib/perf-counter.c
@@ -31,7 +31,7 @@
 #include "shash.h"
 #include "util.h"
 
-static struct shash perf_counters;
+static struct shash perf_counters = SHASH_INITIALIZER(&perf_counters);
 static int fd__ = 0;
 
 uint64_t