1 2 #define DEFINE_PER_CPU(type, val) type val 3 4 #define __get_cpu_var(var) var 5 #define this_cpu_ptr(var) var 6 #define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); }) 7 #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu)) 8