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 13 struct 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
