[igt-dev] [PATCH i-g-t] lib: Silence Valgrind warning in synce_fence_status

Tvrtko Ursulin
2019-06-27T12:55:21Z

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Let Valgrind know the ioctl initializes the passed in info block to reduce
the noise while debugging.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
lib/sw_sync.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/lib/sw_sync.c b/lib/sw_sync.c
index f208603312c2..73f3f7015d9d 100644
--- a/lib/sw_sync.c
+++ b/lib/sw_sync.c
@@ -41,6 +41,15 @@
#include "drmtest.h"
#include "ioctl_wrappers.h"

+#ifdef HAVE_VALGRIND
+#include <valgrind/valgrind.h>
+#include <valgrind/memcheck.h>
+
+#define VG(x) x
+#else
+#define VG(x) do {} while (0)
+#endif
+
/**
* SECTION:sw_sync
* @short_description: Software sync (fencing) support library
@@ -218,6 +227,8 @@ int sync_fence_status(int fence)
if (file_info.num_fences != 1)
return -EINVAL;

+ VG(VALGRIND_MAKE_MEM_DEFINED(&fence_info, sizeof(fence_info)));
+
return fence_info.status;
}

--
2.20.1