ptr_ring: support testing different batching sizes

Use the param flag for that.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/virtio/ringtest/ptr_ring.c b/tools/virtio/ringtest/ptr_ring.c
index 635b07b4fdd3..7b22f1b20652 100644
--- a/tools/virtio/ringtest/ptr_ring.c
+++ b/tools/virtio/ringtest/ptr_ring.c
@@ -97,6 +97,9 @@ void alloc_ring(void)
 {
         int ret = ptr_ring_init(&array, ring_size, 0);
         assert(!ret);
+        /* Hacky way to poke at ring internals. Useful for testing though. */
+        if (param)
+                array.batch = param;
 }
 
 /* guest side */