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120 lines
3.1 KiB
120 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __TOOLS_LINUX_KERNEL_H |
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#define __TOOLS_LINUX_KERNEL_H |
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#include <stdarg.h> |
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#include <stddef.h> |
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#include <assert.h> |
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#include <linux/build_bug.h> |
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#include <linux/compiler.h> |
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#include <endian.h> |
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#include <byteswap.h> |
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#ifndef UINT_MAX |
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#define UINT_MAX (~0U) |
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#endif |
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) |
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#define PERF_ALIGN(x, a) __PERF_ALIGN_MASK(x, (typeof(x))(a)-1) |
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#define __PERF_ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) |
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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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/** |
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* container_of - cast a member of a structure out to the containing structure |
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* @ptr: the pointer to the member. |
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* @type: the type of the container struct this is embedded in. |
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* @member: the name of the member within the struct. |
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* |
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*/ |
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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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#ifndef BUG_ON |
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#ifdef NDEBUG |
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#define BUG_ON(cond) do { if (cond) {} } while (0) |
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#else |
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#define BUG_ON(cond) assert(!(cond)) |
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#endif |
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#endif |
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#define BUG() BUG_ON(1) |
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#if __BYTE_ORDER == __BIG_ENDIAN |
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#define cpu_to_le16 bswap_16 |
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#define cpu_to_le32 bswap_32 |
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#define cpu_to_le64 bswap_64 |
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#define le16_to_cpu bswap_16 |
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#define le32_to_cpu bswap_32 |
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#define le64_to_cpu bswap_64 |
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#define cpu_to_be16 |
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#define cpu_to_be32 |
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#define cpu_to_be64 |
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#define be16_to_cpu |
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#define be32_to_cpu |
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#define be64_to_cpu |
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#else |
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#define cpu_to_le16 |
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#define cpu_to_le32 |
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#define cpu_to_le64 |
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#define le16_to_cpu |
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#define le32_to_cpu |
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#define le64_to_cpu |
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#define cpu_to_be16 bswap_16 |
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#define cpu_to_be32 bswap_32 |
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#define cpu_to_be64 bswap_64 |
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#define be16_to_cpu bswap_16 |
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#define be32_to_cpu bswap_32 |
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#define be64_to_cpu bswap_64 |
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#endif |
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int vscnprintf(char *buf, size_t size, const char *fmt, va_list args); |
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int scnprintf(char * buf, size_t size, const char * fmt, ...); |
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int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); |
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) |
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/* |
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* This looks more complex than it should be. But we need to |
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* get the type for the ~ right in round_down (it needs to be |
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* as wide as the result!), and we want to evaluate the macro |
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* arguments just once each. |
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*/ |
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#define __round_mask(x, y) ((__typeof__(x))((y)-1)) |
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#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) |
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#define round_down(x, y) ((x) & ~__round_mask(x, y)) |
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#define current_gfp_context(k) 0 |
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#define synchronize_rcu() |
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#endif
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