/* SPDX-License-Identifier: GPL-2.0 */#ifndef __TOOLS_LINUX_KERNEL_H#define __TOOLS_LINUX_KERNEL_H #include <stdarg.h>#include <stddef.h>#include <assert.h>#include <linux/build_bug.h>#include <linux/compiler.h>#include <endian.h>#include <byteswap.h> #ifndef UINT_MAX#define UINT_MAX	(~0U)#endif #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) #define PERF_ALIGN(x, a)	__PERF_ALIGN_MASK(x, (typeof(x))(a)-1)#define __PERF_ALIGN_MASK(x, mask)	(((x)+(mask))&~(mask)) #ifndef offsetof#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)#endif #ifndef container_of/** * container_of - cast a member of a structure out to the containing structure * @ptr:	the pointer to the member. * @type:	the type of the container struct this is embedded in. * @member:	the name of the member within the struct. * */#define container_of(ptr, type, member) ({			\	const typeof(((type *)0)->member) * __mptr = (ptr);	\	(type *)((char *)__mptr - offsetof(type, member)); })#endif #ifndef max#define max(x, y) ({				\	typeof(x) _max1 = (x);			\	typeof(y) _max2 = (y);			\	(void) (&_max1 == &_max2);		\	_max1 > _max2 ? _max1 : _max2; })#endif #ifndef min#define min(x, y) ({				\	typeof(x) _min1 = (x);			\	typeof(y) _min2 = (y);			\	(void) (&_min1 == &_min2);		\	_min1 < _min2 ? _min1 : _min2; })#endif #ifndef roundup#define roundup(x, y) (                                \{                                                      \	const typeof(y) __y = y;		       \	(((x) + (__y - 1)) / __y) * __y;	       \}                                                      \)#endif #ifndef BUG_ON#ifdef NDEBUG#define BUG_ON(cond) do { if (cond) {} } while (0)#else#define BUG_ON(cond) assert(!(cond))#endif#endif#define BUG()	BUG_ON(1) #if __BYTE_ORDER == __BIG_ENDIAN#define cpu_to_le16 bswap_16#define cpu_to_le32 bswap_32#define cpu_to_le64 bswap_64#define le16_to_cpu bswap_16#define le32_to_cpu bswap_32#define le64_to_cpu bswap_64#define cpu_to_be16#define cpu_to_be32#define cpu_to_be64#define be16_to_cpu#define be32_to_cpu#define be64_to_cpu#else#define cpu_to_le16#define cpu_to_le32#define cpu_to_le64#define le16_to_cpu#define le32_to_cpu#define le64_to_cpu#define cpu_to_be16 bswap_16#define cpu_to_be32 bswap_32#define cpu_to_be64 bswap_64#define be16_to_cpu bswap_16#define be32_to_cpu bswap_32#define be64_to_cpu bswap_64#endif int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);int scnprintf(char * buf, size_t size, const char * fmt, ...);int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) /* * This looks more complex than it should be. But we need to * get the type for the ~ right in round_down (it needs to be * as wide as the result!), and we want to evaluate the macro * arguments just once each. */#define __round_mask(x, y) ((__typeof__(x))((y)-1))#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)#define round_down(x, y) ((x) & ~__round_mask(x, y)) #define current_gfp_context(k) 0#define synchronize_rcu() #endif