__my_cpu_offset
#define __my_cpu_offset __my_cpu_offset()
register unsigned long __my_cpu_offset __asm__("$r21");
__my_cpu_offset = off;
__asm__ __volatile__("":"+r"(__my_cpu_offset)); \
__my_cpu_offset; \
#ifndef __my_cpu_offset
#define my_cpu_offset __my_cpu_offset
#define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset)