1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_GETCPU_H 3 #define _LINUX_GETCPU_H 1 4 5 /* Cache for getcpu() to speed it up. Results might be a short time 6 out of date, but will be faster. 7 8 User programs should not refer to the contents of this structure. 9 I repeat they should not refer to it. If they do they will break 10 in future kernels. 11 12 It is only a private cache for vgetcpu(). It will change in future kernels. 13 The user program must store this information per thread (__thread) 14 If you want 100% accurate information pass NULL instead. */ 15 struct getcpu_cache { 16 unsigned long blob[128 / sizeof(long)]; 17 }; 18 19 #endif 20