1#ifndef _LINUX_KERNEL_H
2#define _LINUX_KERNEL_H
3
4/*
5 * 'kernel.h' contains some often-used function prototypes etc
6 */
7#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
8#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
9
10
11
12#define SI_LOAD_SHIFT	16
13struct sysinfo {
14	long uptime;			/* Seconds since boot */
15	unsigned long loads[3];		/* 1, 5, and 15 minute load averages */
16	unsigned long totalram;		/* Total usable main memory size */
17	unsigned long freeram;		/* Available memory size */
18	unsigned long sharedram;	/* Amount of shared memory */
19	unsigned long bufferram;	/* Memory used by buffers */
20	unsigned long totalswap;	/* Total swap space size */
21	unsigned long freeswap;		/* swap space still available */
22	unsigned short procs;		/* Number of current processes */
23	unsigned short pad;		/* explicit padding for m68k */
24	unsigned long totalhigh;	/* Total high memory size */
25	unsigned long freehigh;		/* Available high memory size */
26	unsigned int mem_unit;		/* Memory unit size in bytes */
27	char _f[20-2*sizeof(long)-sizeof(int)];	/* Padding: libc5 uses this.. */
28};
29
30/* Force a compilation error if condition is true */
31#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition))
32
33/* Force a compilation error if condition is constant and true */
34#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
35
36/* Force a compilation error if a constant expression is not a power of 2 */
37#define BUILD_BUG_ON_NOT_POWER_OF_2(n)			\
38	BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
39
40/* Force a compilation error if condition is true, but also produce a
41   result (of value 0 and type size_t), so the expression can be used
42   e.g. in a structure initializer (or where-ever else comma expressions
43   aren't permitted). */
44#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
45#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
46
47/* Trap pasters of __FUNCTION__ at compile-time */
48#define __FUNCTION__ (__func__)
49
50/* This helps us to avoid #ifdef CONFIG_NUMA */
51#ifdef CONFIG_NUMA
52#define NUMA_BUILD 1
53#else
54#define NUMA_BUILD 0
55#endif
56
57/* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */
58#ifdef CONFIG_FTRACE_MCOUNT_RECORD
59# define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
60#endif
61
62#endif
63