linux_old1/include/linux/getcpu.h

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#ifndef _LINUX_GETCPU_H
#define _LINUX_GETCPU_H 1
/* Cache for getcpu() to speed it up. Results might be a short time
out of date, but will be faster.
User programs should not refer to the contents of this structure.
I repeat they should not refer to it. If they do they will break
in future kernels.
It is only a private cache for vgetcpu(). It will change in future kernels.
The user program must store this information per thread (__thread)
If you want 100% accurate information pass NULL instead. */
struct getcpu_cache {
unsigned long blob[128 / sizeof(long)];
};
#endif