LXR linux/tools/perf/util/include/linux/kernel.h

   1#ifndef PERF_LINUX_KERNEL_H_
   2#define PERF_LINUX_KERNEL_H_
   3
   4#ifndef offsetof
   5#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
   6#endif
   7
   8#ifndef container_of
   9/**
  10 * container_of - cast a member of a structure out to the containing structure
  11 * @ptr:        the pointer to the member.
  12 * @type:       the type of the container struct this is embedded in.
  13 * @member:     the name of the member within the struct.
  14 *
  15 */
  16#define container_of(ptr, type, member) ({                      \
  17        const typeof(((type *)0)->member) * __mptr = (ptr);     \
  18        (type *)((char *)__mptr - offsetof(type, member)); })
  19#endif
  20
  21#ifndef max
  22#define max(x, y) ({                            \
  23        typeof(x) _max1 = (x);                  \
  24        typeof(y) _max2 = (y);                  \
  25        (void) (&_max1 == &_max2);              \
  26        _max1 > _max2 ? _max1 : _max2; })
  27#endif
  28
  29#endif
  30