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vhost: eliminate loop log print when no available requests

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Change-Id: I3cd72317392b15bad888391b7bc7e1bc5e69385c
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Changpeng Liu 2017-04-28 10:44:52 +08:00 committed by Jim Harris
parent 2621c7bdc4
commit fa511620c4
1 changed files with 5 additions and 0 deletions
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5
lib/vhost/vhost.c
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@ -54,6 +54,7 @@
#include "spdk/conf.h"
#include "spdk/event.h"
#include "spdk/scsi_spec.h"
#include "spdk/likely.h"
#include "spdk/vhost.h"
#include "task.h"
@ -120,6 +121,10 @@ vq_avail_ring_get(struct vhost_virtqueue *vq, uint16_t *reqs, uint16_t reqs_len)
uint16_t count = RTE_MIN((avail_idx - last_idx) & size_mask, reqs_len);
uint16_t i;
if (spdk_likely(count == 0)) {
return 0;
}
vq->last_avail_idx += count;
for (i = 0; i < count; i++) {
reqs[i] = vq->avail->ring[(last_idx + i) & size_mask];