d5b2c65a39
This feature is replaced with LRU list shuffling. Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
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* Copyright(c) 2012-2022 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __METADATA_STRUCTS_H__
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#define __METADATA_STRUCTS_H__
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#include "metadata_common.h"
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#include "../ocf_space.h"
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#include "../cleaning/cleaning.h"
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#include "../ocf_request.h"
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/**
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* @file metadata_priv.h
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* @brief Metadata private structures
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*/
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/**
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* @brief Metadata shutdown status
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*/
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enum ocf_metadata_shutdown_status {
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ocf_metadata_clean_shutdown = 1, /*!< OCF shutdown graceful*/
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ocf_metadata_dirty_shutdown = 0, /*!< Dirty OCF shutdown*/
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ocf_metadata_detached = 2, /*!< Cache device detached */
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};
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/**
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* @brief Query cores completion callback
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*
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* @param priv - Caller private data
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* @param error - Operation error status
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* @param num_cores - Number of cores in metadata
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*/
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typedef void (*ocf_metadata_query_cores_end_t)(void *priv, int error,
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unsigned int num_cores);
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#define OCF_METADATA_GLOBAL_LOCK_IDX_BITS 2
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#define OCF_NUM_GLOBAL_META_LOCKS (1 << (OCF_METADATA_GLOBAL_LOCK_IDX_BITS))
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struct ocf_metadata_global_lock {
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env_rwsem sem;
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} __attribute__((aligned(64)));
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struct ocf_metadata_lock
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{
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struct ocf_metadata_global_lock global[OCF_NUM_GLOBAL_META_LOCKS];
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/*!< global metadata lock (GML) */
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env_rwlock lru[OCF_NUM_LRU_LISTS]; /*!< Fast locks for lru list */
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env_spinlock partition[OCF_USER_IO_CLASS_MAX]; /* partition lock */
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env_rwsem *hash; /*!< Hash bucket locks */
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env_rwsem *collision_pages; /*!< Collision table page locks */
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ocf_cache_t cache; /*!< Parent cache object */
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uint32_t num_hash_entries; /*!< Hash bucket count */
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uint32_t num_collision_pages; /*!< Collision table page count */
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};
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/**
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* @brief Metadata control structure
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*/
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struct ocf_metadata {
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void *priv;
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/*!< Private data of metadata service interface */
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ocf_cache_line_size_t line_size;
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/*!< Cache line size */
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bool is_volatile;
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/*!< true if metadata used in volatile mode (RAM only) */
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struct ocf_metadata_lock lock;
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};
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#endif /* __METADATA_STRUCTS_H__ */
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