Commit 6a1ec6a6 authored by Liu Xiaodong's avatar Liu Xiaodong Committed by Tomasz Zawadzki
Browse files

vhost: extract session_vq_io_stats_update 



Change-Id: Id0349d571c974e963fbbf080bd6e2fe113b13622
Signed-off-by: default avatarLiu Xiaodong <xiaodong.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4769


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent 3e2c9092

lib/vhost/vhost.c

+20 −14
Original line number Diff line number Diff line
@@ -305,28 +305,18 @@ vhost_vq_used_signal(struct spdk_vhost_session *vsession, 
	}

}





static void

check_session_io_stats(struct spdk_vhost_session *vsession, uint64_t now)

session_vq_io_stats_update(struct spdk_vhost_session *vsession,

			   struct spdk_vhost_virtqueue *virtqueue, uint64_t now)

{

	struct spdk_vhost_virtqueue *virtqueue;

	uint32_t irq_delay_base = vsession->coalescing_delay_time_base;

	uint32_t io_threshold = vsession->coalescing_io_rate_threshold;

	int32_t irq_delay;

	uint32_t req_cnt;

	uint16_t q_idx;



	if (now < vsession->next_stats_check_time) {

		return;

	}



	vsession->next_stats_check_time = now + vsession->stats_check_interval;

	for (q_idx = 0; q_idx < vsession->max_queues; q_idx++) {

		virtqueue = &vsession->virtqueue[q_idx];



	req_cnt = virtqueue->req_cnt + virtqueue->used_req_cnt;

	if (req_cnt <= io_threshold) {

			continue;

		return;

	}



	irq_delay = (irq_delay_base * (req_cnt - io_threshold)) / io_threshold;
@@ -335,6 +325,22 @@ check_session_io_stats(struct spdk_vhost_session *vsession, uint64_t now) 
	virtqueue->req_cnt = 0;

	virtqueue->next_event_time = now;

}



static void

check_session_io_stats(struct spdk_vhost_session *vsession, uint64_t now)

{

	struct spdk_vhost_virtqueue *virtqueue;

	uint16_t q_idx;



	if (now < vsession->next_stats_check_time) {

		return;

	}



	vsession->next_stats_check_time = now + vsession->stats_check_interval;

	for (q_idx = 0; q_idx < vsession->max_queues; q_idx++) {

		virtqueue = &vsession->virtqueue[q_idx];

		session_vq_io_stats_update(vsession, virtqueue, now);

	}

}



static inline bool