From: Tiwei Bie <tiwei.bie@intel.com>
To: mst@redhat.com, jasowang@redhat.com
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: [PATCH 2/2] vhost/test: fix build for vhost test
Date: Wed, 28 Aug 2019 13:37:00 +0800 [thread overview]
Message-ID: <20190828053700.26022-2-tiwei.bie@intel.com> (raw)
In-Reply-To: <20190828053700.26022-1-tiwei.bie@intel.com>
Since vhost_exceeds_weight() was introduced, callers need to specify
the packet weight and byte weight in vhost_dev_init(). Note that, the
packet weight isn't counted in this patch to keep the original behavior
unchanged.
Fixes: e82b9b0727ff ("vhost: introduce vhost_exceeds_weight()")
Cc: stable@vger.kernel.org
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
---
drivers/vhost/test.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index ac4f762c4f65..7804869c6a31 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c
@@ -22,6 +22,12 @@
* Using this limit prevents one virtqueue from starving others. */
#define VHOST_TEST_WEIGHT 0x80000
+/* Max number of packets transferred before requeueing the job.
+ * Using this limit prevents one virtqueue from starving others with
+ * pkts.
+ */
+#define VHOST_TEST_PKT_WEIGHT 256
+
enum {
VHOST_TEST_VQ = 0,
VHOST_TEST_VQ_MAX = 1,
@@ -80,10 +86,8 @@ static void handle_vq(struct vhost_test *n)
}
vhost_add_used_and_signal(&n->dev, vq, head, 0);
total_len += len;
- if (unlikely(total_len >= VHOST_TEST_WEIGHT)) {
- vhost_poll_queue(&vq->poll);
+ if (unlikely(vhost_exceeds_weight(vq, 0, total_len)))
break;
- }
}
mutex_unlock(&vq->mutex);
@@ -115,7 +119,8 @@ static int vhost_test_open(struct inode *inode, struct file *f)
dev = &n->dev;
vqs[VHOST_TEST_VQ] = &n->vqs[VHOST_TEST_VQ];
n->vqs[VHOST_TEST_VQ].handle_kick = handle_vq_kick;
- vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX, UIO_MAXIOV);
+ vhost_dev_init(dev, vqs, VHOST_TEST_VQ_MAX, UIO_MAXIOV,
+ VHOST_TEST_PKT_WEIGHT, VHOST_TEST_WEIGHT);
f->private_data = n;
--
2.17.1
next prev parent reply other threads:[~2019-08-28 5:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-28 5:36 [PATCH 1/2] vhost/test: fix build for vhost test Tiwei Bie
2019-08-28 5:37 ` Tiwei Bie [this message]
2019-08-30 3:38 ` [PATCH 2/2] " Jason Wang
2019-08-30 3:37 ` [PATCH 1/2] " Jason Wang
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