linux-kernel - [PATCH 3/3] ptr_ring: support testing different batching sizes

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Date:   Fri, 7 Apr 2017 08:50:02 +0300
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jason Wang <jasowang@...hat.com>, brouer@...hat.com,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH 3/3] ptr_ring: support testing different batching sizes

Use the param flag for that.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 tools/virtio/ringtest/ptr_ring.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/virtio/ringtest/ptr_ring.c b/tools/virtio/ringtest/ptr_ring.c
index 635b07b..7b22f1b 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 */
-- 
MST