ac1b6b774a
Now the request can be pushed to a high priority queue (instead of ocf_queue_push_req_front) and to a low priority queue (instead of ocf_queue_push_req_back). Both functions were merged into one function (ocf_queue_push_req) and instead of the allow_sync parameter there is now a flags parameter that can be an OR combination of OCF_QUEUE_ALLOW_SYNC and OCF_QUEUE_PRIO_HIGH Signed-off-by: Ian Levine <ian.levine@huawei.com> Signed-off-by: Robert Baldyga <robert.baldyga@huawei.com>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
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* Copyright(c) 2012-2021 Intel Corporation
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* Copyright(c) 2024 Huawei Technologies
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef OCF_QUEUE_PRIV_H_
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#define OCF_QUEUE_PRIV_H_
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#include "ocf_env.h"
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#include "ocf_request.h"
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/* ocf_queue_push_req flags */
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#define OCF_QUEUE_ALLOW_SYNC 0x01 /* Request can run immediately in caller context */
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#define OCF_QUEUE_PRIO_HIGH 0x02 /* Push to the high priority queue */
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struct ocf_queue {
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ocf_cache_t cache;
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void *priv;
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struct list_head io_list_high;
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struct list_head io_list_low;
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/* per-queue free running global metadata lock index */
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unsigned lock_idx;
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/* per-queue free running lru list index */
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unsigned lru_idx;
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struct ocf_seq_cutoff *seq_cutoff;
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struct list_head list;
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const struct ocf_queue_ops *ops;
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/* Tracing reference counter */
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env_atomic64 trace_ref_cntr;
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/* Tracing stop request */
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env_atomic trace_stop;
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env_atomic io_no;
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env_atomic ref_count;
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env_spinlock io_list_lock;
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} __attribute__((__aligned__(64)));
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static inline void ocf_queue_kick(ocf_queue_t queue, bool allow_sync)
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{
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if (allow_sync && queue->ops->kick_sync)
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queue->ops->kick_sync(queue);
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else
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queue->ops->kick(queue);
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}
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/**
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* @brief Push OCF request to the OCF thread worker queue
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*
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* @param req OCF request
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* @param flags See ocf_queue_push_req flags above
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*/
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void ocf_queue_push_req(struct ocf_request *req, uint flags);
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/**
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* @brief Set interface and push from request to the OCF thread worker queue
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*
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* @param req OCF request
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* @param req_cb IO engine handler callback
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* @param flags See ocf_queue_push_req flags above
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*/
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void ocf_queue_push_req_cb(struct ocf_request *req,
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ocf_req_cb req_cb, uint flags);
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#endif
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