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https://github.com/netdata/libbpf.git
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fad5d91381
This replicates kernel upstream setup and brings READ_ONCE() and WRITE_ONCE() macros anywhere where linux/kernel.h is included, which is assumption libbpf code makes. Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
47 lines
1012 B
C
47 lines
1012 B
C
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
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#ifndef __LINUX_KERNEL_H
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#define __LINUX_KERNEL_H
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#include <linux/compiler.h>
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#endif
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#ifndef container_of
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#define container_of(ptr, type, member) ({ \
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const typeof(((type *)0)->member) * __mptr = (ptr); \
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(type *)((char *)__mptr - offsetof(type, member)); })
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#endif
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#ifndef max
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#define max(x, y) ({ \
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typeof(x) _max1 = (x); \
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typeof(y) _max2 = (y); \
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(void) (&_max1 == &_max2); \
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_max1 > _max2 ? _max1 : _max2; })
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#endif
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#ifndef min
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#define min(x, y) ({ \
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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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#endif
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#ifndef roundup
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#define roundup(x, y) ( \
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{ \
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const typeof(y) __y = y; \
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(((x) + (__y - 1)) / __y) * __y; \
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} \
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)
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#endif
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#endif
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