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