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lib/vhost: Add submit_inflight_desc() to cpu usage statistic

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submit_inflight_desc() actually do some meaningful work, so when it really process tasks, the poller should return BUSY status.

Signed-off-by: YafeiWangAlice <yafei.wang@samsung.com>
Change-Id: I2103cea6d28e8b355dad4ddd603d917f10e44c08
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13486
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
王亚飞/Yafei WANG 2022-06-29 14:27:11 +08:00 committed by Tomasz Zawadzki
parent bf93cbdfc5
commit 6fcd7a79e9
2 changed files with 19 additions and 13 deletions
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18
lib/vhost/vhost_blk.c
View File

@ -799,7 +799,7 @@ process_packed_inflight_blk_task(struct spdk_vhost_virtqueue *vq,
}
}
static void
static int
submit_inflight_desc(struct spdk_vhost_blk_session *bvsession,
struct spdk_vhost_virtqueue *vq)
{
@ -807,12 +807,12 @@ submit_inflight_desc(struct spdk_vhost_blk_session *bvsession,
spdk_vhost_resubmit_info *resubmit;
spdk_vhost_resubmit_desc *resubmit_list;
uint16_t req_idx;
int i;
int i, resubmit_cnt;
resubmit = vq->vring_inflight.resubmit_inflight;
if (spdk_likely(resubmit == NULL || resubmit->resubmit_list == NULL ||
resubmit->resubmit_num == 0)) {
return;
return 0;
}
resubmit_list = resubmit->resubmit_list;
@ -836,7 +836,9 @@ submit_inflight_desc(struct spdk_vhost_blk_session *bvsession,
process_blk_task(vq, req_idx);
}
}
resubmit_cnt = resubmit->resubmit_num;
resubmit->resubmit_num = 0;
return resubmit_cnt;
}
static int
@ -845,12 +847,13 @@ process_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_virtqueue
struct spdk_vhost_session *vsession = &bvsession->vsession;
uint16_t reqs[SPDK_VHOST_VQ_MAX_SUBMISSIONS];
uint16_t reqs_cnt, i;
int resubmit_cnt = 0;
submit_inflight_desc(bvsession, vq);
resubmit_cnt = submit_inflight_desc(bvsession, vq);
reqs_cnt = vhost_vq_avail_ring_get(vq, reqs, SPDK_COUNTOF(reqs));
if (!reqs_cnt) {
return 0;
return resubmit_cnt;
}
for (i = 0; i < reqs_cnt; i++) {
@ -877,8 +880,9 @@ process_packed_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_vi
{
uint16_t i = 0;
uint16_t count = 0;
int resubmit_cnt = 0;
submit_inflight_desc(bvsession, vq);
resubmit_cnt = submit_inflight_desc(bvsession, vq);
while (i++ < SPDK_VHOST_VQ_MAX_SUBMISSIONS &&
vhost_vq_packed_ring_is_avail(vq)) {
@ -888,7 +892,7 @@ process_packed_vq(struct spdk_vhost_blk_session *bvsession, struct spdk_vhost_vi
process_packed_blk_task(vq, vq->last_avail_idx);
}
return count;
return count > 0 ? count : resubmit_cnt;
}
static int

14
lib/vhost/vhost_scsi.c
View File

@ -711,7 +711,7 @@ process_scsi_task(struct spdk_vhost_session *vsession,
}
}
static void
static int
submit_inflight_desc(struct spdk_vhost_scsi_session *svsession,
struct spdk_vhost_virtqueue *vq)
{
@ -719,12 +719,12 @@ submit_inflight_desc(struct spdk_vhost_scsi_session *svsession,
spdk_vhost_resubmit_info *resubmit;
spdk_vhost_resubmit_desc *resubmit_list;
uint16_t req_idx;
int i;
int i, resubmit_cnt;
resubmit = vq->vring_inflight.resubmit_inflight;
if (spdk_likely(resubmit == NULL || resubmit->resubmit_list == NULL ||
resubmit->resubmit_num == 0)) {
return;
return 0;
}
resubmit_list = resubmit->resubmit_list;
@ -744,8 +744,9 @@ submit_inflight_desc(struct spdk_vhost_scsi_session *svsession,
process_scsi_task(vsession, vq, req_idx);
}
resubmit_cnt = resubmit->resubmit_num;
resubmit->resubmit_num = 0;
return resubmit_cnt;
}
static int
@ -754,8 +755,9 @@ process_vq(struct spdk_vhost_scsi_session *svsession, struct spdk_vhost_virtqueu
struct spdk_vhost_session *vsession = &svsession->vsession;
uint16_t reqs[32];
uint16_t reqs_cnt, i;
int resubmit_cnt;
submit_inflight_desc(svsession, vq);
resubmit_cnt = submit_inflight_desc(svsession, vq);
reqs_cnt = vhost_vq_avail_ring_get(vq, reqs, SPDK_COUNTOF(reqs));
assert(reqs_cnt <= 32);
@ -776,7 +778,7 @@ process_vq(struct spdk_vhost_scsi_session *svsession, struct spdk_vhost_virtqueu
process_scsi_task(vsession, vq, reqs[i]);
}
return reqs_cnt;
return reqs_cnt > 0 ? reqs_cnt : resubmit_cnt;
}
static int