83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
// SPDX-FileCopyrightText: 2025 UnionTech Software Technology Co., Ltd
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//
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// SPDX-License-Identifier: LGPL-2.1
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#ifndef __URBLAT_H__
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#define __URBLAT_H__
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#define min(x, y) \
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({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void)(&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; \
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})
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#define DISK_NAME_LEN 32
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#define MAX_SLOTS 27
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#define MINORBITS 20
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#define MINORMASK ((1U << MINORBITS) - 1)
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#define MKDEV(ma, mi) (((ma) << MINORBITS) | (mi))
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struct hist_key
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{
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__u32 cmd_flags;
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__u32 dev;
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};
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struct hist
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{
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__u32 slots[MAX_SLOTS];
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};
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#define READ_ONCE(x) (*(volatile typeof(x) *)&(x))
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#define WRITE_ONCE(x, val) ((*(volatile typeof(x) *)&(x)) = val)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-function"
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static __always_inline __u64 log2(__u32 v)
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{
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__u32 shift, r;
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r = (v > 0xFFFF) << 4;
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v >>= r;
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shift = (v > 0xFF) << 3;
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v >>= shift;
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r |= shift;
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shift = (v > 0xF) << 2;
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v >>= shift;
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r |= shift;
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shift = (v > 0x3) << 1;
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v >>= shift;
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r |= shift;
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r |= (v >> 1);
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return r;
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}
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static __always_inline __u64 log2l(__u64 v)
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{
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__u32 hi = v >> 32;
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if (hi)
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{
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return log2(hi) + 32;
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}
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else
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{
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return log2(v);
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}
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}
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#pragma GCC diagnostic pop
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struct partition
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{
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char *name;
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unsigned int dev;
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};
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#endif
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