f22da1cde7
Change license to BSD-3-Clause Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* Copyright(c) 2012-2021 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __OCF_DEF_PRIV_H__
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#define __OCF_DEF_PRIV_H__
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#include "ocf/ocf.h"
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#include "ocf_env.h"
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#define BYTES_TO_SECTORS(x) ((x) >> ENV_SECTOR_SHIFT)
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#define SECTORS_TO_BYTES(x) ((x) << ENV_SECTOR_SHIFT)
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#define BYTES_TO_PAGES(x) ((((uint64_t)x) + (PAGE_SIZE - 1)) / PAGE_SIZE)
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#define PAGES_TO_BYTES(x) (((uint64_t)x) * PAGE_SIZE)
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#define OCF_DIV_ROUND_UP(x, y) \
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({ \
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__typeof__ (x) __x = (x); \
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__typeof__ (y) __y = (y); \
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(__x + __y - 1) / __y; \
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})
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#define OCF_MAX(x,y) \
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({ \
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__typeof__ (x) __x = (x); \
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__typeof__ (y) __y = (y); \
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__x > __y ? __x : __y; \
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})
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#define OCF_MIN(x,y) \
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({ \
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__typeof__ (x) __x = (x); \
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__typeof__ (y) __y = (y); \
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__x < __y ? __x : __y; \
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})
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#define METADATA_VERSION() ((OCF_VERSION_MAIN << 16) + \
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(OCF_VERSION_MAJOR << 8) + OCF_VERSION_MINOR)
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/* call conditional reschedule every 'iterations' calls */
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#define OCF_COND_RESCHED(cnt, iterations) \
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if (unlikely(++(cnt) == (iterations))) { \
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env_cond_resched(); \
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(cnt) = 0; \
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}
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/* call conditional reschedule with default interval */
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#define OCF_COND_RESCHED_DEFAULT(cnt) OCF_COND_RESCHED(cnt, 1000000)
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static inline unsigned long long
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ocf_rotate_right(unsigned long long bits, unsigned shift, unsigned width)
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{
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return ((bits >> shift) | (bits << (width - shift))) &
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((1ULL << width) - 1);
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}
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#endif
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