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6    out of date, but will be faster.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