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lib/vhost: Fix vhost user cpu usage statistic issue

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Currently, when you run vhost user target, no matter if the reactor is
busy or not, spdk_top always shows 100% busy. Fix this by real load
status.

Signed-off-by: Rui Chang <rui.chang@arm.com>
Change-Id: I610a8c2f4e74f46bd56955d31284372c775507ed
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12647
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
This commit is contained in:
Rui Chang 2022-05-11 18:40:11 +08:00 committed by Tomasz Zawadzki
parent b0262063d3
commit 3ed4c29a11
2 changed files with 25 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
lib/vhost/vhost_blk.c
View File

@ -861,7 +861,7 @@ submit_inflight_desc(struct spdk_vhost_blk_session *bvsession,
resubmit->resubmit_num = 0;
}
static void
static int
process_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_virtqueue *vq)
{
struct spdk_vhost_session *vsession = &bvsession->vsession;
@ -872,7 +872,7 @@ process_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_virtqueue
reqs_cnt = vhost_vq_avail_ring_get(vq, reqs, SPDK_COUNTOF(reqs));
if (!reqs_cnt) {
return;
return 0;
}
for (i = 0; i < reqs_cnt; i++) {
@ -890,12 +890,15 @@ process_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_virtqueue
process_blk_task(vq, reqs[i]);
}
return reqs_cnt;
}
static void
static int
process_packed_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_virtqueue *vq)
{
uint16_t i = 0;
uint16_t count = 0;
submit_inflight_desc(bvsession, vq);
@ -903,9 +906,11 @@ process_packed_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_vi
vhost_vq_packed_ring_is_avail(vq)) {
SPDK_DEBUGLOG(vhost_blk, "====== Starting processing request idx %"PRIu16"======\n",
vq->last_avail_idx);
count++;
process_packed_blk_task(vq, vq->last_avail_idx);
}
return count;
}
static int
@ -914,17 +919,18 @@ _vdev_vq_worker(struct spdk_vhost_virtqueue *vq)
struct spdk_vhost_session *vsession = vq->vsession;
struct spdk_vhost_blk_session *bvsession = to_blk_session(vsession);
bool packed_ring;
int rc = 0;
packed_ring = vq->packed.packed_ring;
if (packed_ring) {
process_packed_vq(bvsession, vq);
rc = process_packed_vq(bvsession, vq);
} else {
process_vq(bvsession, vq);
rc = process_vq(bvsession, vq);
}
vhost_session_vq_used_signal(vq);
return SPDK_POLLER_BUSY;
return rc;
}
@ -942,12 +948,13 @@ vdev_worker(void *arg)
struct spdk_vhost_blk_session *bvsession = arg;
struct spdk_vhost_session *vsession = &bvsession->vsession;
uint16_t q_idx;
int rc = 0;
for (q_idx = 0; q_idx < vsession->max_queues; q_idx++) {
_vdev_vq_worker(&vsession->virtqueue[q_idx]);
rc += _vdev_vq_worker(&vsession->virtqueue[q_idx]);
}
return SPDK_POLLER_BUSY;
return rc > 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
}
static void

14
lib/vhost/vhost_scsi.c
View File

@ -775,7 +775,7 @@ submit_inflight_desc(struct spdk_vhost_scsi_session *svsession,
resubmit->resubmit_num = 0;
}
static void
static int
process_vq(struct spdk_vhost_scsi_session *svsession, struct spdk_vhost_virtqueue *vq)
{
struct spdk_vhost_session *vsession = &svsession->vsession;
@ -802,6 +802,8 @@ process_vq(struct spdk_vhost_scsi_session *svsession, struct spdk_vhost_virtqueu
process_scsi_task(vsession, vq, reqs[i]);
}
return reqs_cnt;
}
static int
@ -809,6 +811,7 @@ vdev_mgmt_worker(void *arg)
{
struct spdk_vhost_scsi_session *svsession = arg;
struct spdk_vhost_session *vsession = &svsession->vsession;
int rc = 0;
process_removed_devs(svsession);
@ -817,11 +820,11 @@ vdev_mgmt_worker(void *arg)
}
if (vsession->virtqueue[VIRTIO_SCSI_CONTROLQ].vring.desc) {
process_vq(svsession, &vsession->virtqueue[VIRTIO_SCSI_CONTROLQ]);
rc = process_vq(svsession, &vsession->virtqueue[VIRTIO_SCSI_CONTROLQ]);
vhost_vq_used_signal(vsession, &vsession->virtqueue[VIRTIO_SCSI_CONTROLQ]);
}
return SPDK_POLLER_BUSY;
return rc > 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
}
static int
@ -830,14 +833,15 @@ vdev_worker(void *arg)
struct spdk_vhost_scsi_session *svsession = arg;
struct spdk_vhost_session *vsession = &svsession->vsession;
uint32_t q_idx;
int rc = 0;
for (q_idx = VIRTIO_SCSI_REQUESTQ; q_idx < vsession->max_queues; q_idx++) {
process_vq(svsession, &vsession->virtqueue[q_idx]);
rc = process_vq(svsession, &vsession->virtqueue[q_idx]);
}
vhost_session_used_signal(vsession);
return SPDK_POLLER_BUSY;
return rc > 0 ? SPDK_POLLER_BUSY : SPDK_POLLER_IDLE;
}
static struct spdk_vhost_scsi_dev *