__raw_cpu_read
#define __raw_cpu_read_const(pcp) __raw_cpu_read(, , pcp)
#define raw_cpu_read_1(pcp) __raw_cpu_read(1, , pcp)
#define raw_cpu_read_2(pcp) __raw_cpu_read(2, , pcp)
#define raw_cpu_read_4(pcp) __raw_cpu_read(4, , pcp)
#define this_cpu_read_1(pcp) __raw_cpu_read(1, volatile, pcp)
#define this_cpu_read_2(pcp) __raw_cpu_read(2, volatile, pcp)
#define this_cpu_read_4(pcp) __raw_cpu_read(4, volatile, pcp)
#define raw_cpu_read_8(pcp) __raw_cpu_read(8, , pcp)
#define this_cpu_read_8(pcp) __raw_cpu_read(8, volatile, pcp)