include/ust/core.h

   1 #ifndef UST_CORE_H
   2 #define UST_CORE_H
   3
   4 #if defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT)
   5
   6 /*
   7  * Calculate the offset needed to align the type.
   8  * size_of_type must be non-zero.
   9  */
  10 static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type)
  11 {
  12         size_t alignment = min(sizeof(void *), size_of_type);
  13         return (alignment - align_drift) & (alignment - 1);
  14 }
  15 /* Default arch alignment */
  16 #define LTT_ALIGN
  17
  18 static inline int ltt_get_alignment(void)
  19 {
  20         return sizeof(void *);
  21 }
  22
  23 #else
  24
  25 static inline unsigned int ltt_align(size_t align_drift,
  26                  size_t size_of_type)
  27 {
  28         return 0;
  29 }
  30
  31 #define LTT_ALIGN __attribute__((packed))
  32
  33 static inline int ltt_get_alignment(void)
  34 {
  35         return 0;
  36 }
  37 #endif /* defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT) */
  38
  39 #endif /* UST_CORE_H */