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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2023 Red Hat
*/
#ifndef LINUX_COMPILER_H
#define LINUX_COMPILER_H
#include <linux/compiler_attributes.h>
/*
* CPU Branch-prediction hints, courtesy of GCC. Defining these as inline functions instead of
* macros spoils their magic, sadly.
*/
#define likely(expr) __builtin_expect(!!(expr), 1)
#define unlikely(expr) __builtin_expect(!!(expr), 0)
/*
* Count the elements in a static array while attempting to catch some type errors. (See
* http://stackoverflow.com/a/1598827 for an explanation.)
*/
#define ARRAY_SIZE(x) ((sizeof(x) / sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x])))))
/* Defined in linux/container_of.h */
#define container_of(ptr, type, member) \
__extension__({ \
__typeof__(((type *) 0)->member) * __mptr = (ptr); \
(type *) ((char *) __mptr - offsetof(type, member)); \
})
#endif /* LINUX_COMPILER_H */
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