112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
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#ifndef PERF_LINUX_KERNEL_H_
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#define PERF_LINUX_KERNEL_H_
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
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#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
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#define __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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#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
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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 BUG_ON
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#define BUG_ON(cond) assert(!(cond))
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#endif
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/*
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* Both need more care to handle endianness
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* (Don't use bitmap_copy_le() for now)
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*/
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#define cpu_to_le64(x) (x)
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#define cpu_to_le32(x) (x)
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static inline int
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vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
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{
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int i;
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ssize_t ssize = size;
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i = vsnprintf(buf, size, fmt, args);
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return (i >= ssize) ? (ssize - 1) : i;
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}
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static inline int scnprintf(char * buf, size_t size, const char * fmt, ...)
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{
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va_list args;
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ssize_t ssize = size;
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int i;
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va_start(args, fmt);
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i = vsnprintf(buf, size, fmt, args);
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va_end(args);
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return (i >= ssize) ? (ssize - 1) : i;
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}
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static inline unsigned long
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simple_strtoul(const char *nptr, char **endptr, int base)
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{
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return strtoul(nptr, endptr, base);
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}
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int eprintf(int level,
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const char *fmt, ...) __attribute__((format(printf, 2, 3)));
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#ifndef pr_fmt
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#define pr_fmt(fmt) fmt
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#endif
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#define pr_err(fmt, ...) \
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eprintf(0, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_warning(fmt, ...) \
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eprintf(0, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_info(fmt, ...) \
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eprintf(0, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_debug(fmt, ...) \
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eprintf(1, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_debugN(n, fmt, ...) \
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eprintf(n, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_debug2(fmt, ...) pr_debugN(2, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_debug3(fmt, ...) pr_debugN(3, pr_fmt(fmt), ##__VA_ARGS__)
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#define pr_debug4(fmt, ...) pr_debugN(4, pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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