include/linux/getcpu.h

   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   6    out of date, but will be faster.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