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6     out of date, but will be faster.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