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authorRusty Russell <rusty@rustcorp.com.au>2013-03-20 15:44:26 +1030
committerRusty Russell <rusty@rustcorp.com.au>2013-03-20 15:44:53 +1030
commite538ebaf78455ff87dec2c34d4f9c128844e3f3f (patch)
tree1f464016f21f575cdb6ece7940a6ef868438133f /tools/virtio/linux
parent282edb36499042a92b71f052f51754ae7ed936e4 (diff)
tools/virtio: make vringh_test use inbuf/outbuf.
As expected, the simplified accessors are faster. for i in `seq 50`; do /usr/bin/time -f 'Wall time:%e' ./vringh_test --indirect --eventidx --parallel --fast-vringh; done 2>&1 | stats --trim-outliers: Before: Using CPUS 0 and 3 Guest: notified 0, pinged 39062-39063(39063) Host: notified 39062-39063(39063), pinged 0 Wall time:1.760000-2.220000(1.789167) After: Using CPUS 0 and 3 Guest: notified 0, pinged 39037-39063(39062) Host: notified 39037-39063(39062), pinged 0 Wall time:1.640000-1.810000(1.676875) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'tools/virtio/linux')
-rw-r--r--tools/virtio/linux/virtio.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index 5fa612ad932c..6df181a6bcc6 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -63,6 +63,16 @@ int virtqueue_add_sgs(struct virtqueue *vq,
void *data,
gfp_t gfp);
+int virtqueue_add_outbuf(struct virtqueue *vq,
+ struct scatterlist sg[], unsigned int num,
+ void *data,
+ gfp_t gfp);
+
+int virtqueue_add_inbuf(struct virtqueue *vq,
+ struct scatterlist sg[], unsigned int num,
+ void *data,
+ gfp_t gfp);
+
void virtqueue_kick(struct virtqueue *vq);
void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);