include/linux/cache.h

   1 #ifndef __LINUX_CACHE_H
   2 #define __LINUX_CACHE_H
   3
   4 #include <asm/cache.h>
   5
   6 #ifndef L1_CACHE_ALIGN
   7 #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
   8 #endif
   9
  10 #ifndef SMP_CACHE_BYTES
  11 #define SMP_CACHE_BYTES L1_CACHE_BYTES
  12 #endif
  13
  14 #ifndef ____cacheline_aligned
  15 #define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
  16 #endif
  17
  18 #ifndef __cacheline_aligned
  19 #ifdef MODULE
  20 #define __cacheline_aligned ____cacheline_aligned
  21 #else
  22 #define __cacheline_aligned                                     \
  23   __attribute__((__aligned__(SMP_CACHE_BYTES),                  \
  24                  __section__(".data.cacheline_aligned")))
  25 #endif
  26 #endif /* __cacheline_aligned */
  27
  28 #endif /* __LINUX_CACHE_H */