LXR linux/arch/arm64/include/asm/current.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_CURRENT_H
   3#define __ASM_CURRENT_H
   4
   5#include <linux/compiler.h>
   6
   7#ifndef __ASSEMBLY__
   8
   9struct task_struct;
  10
  11/*
  12 * We don't use read_sysreg() as we want the compiler to cache the value where
  13 * possible.
  14 */
  15static __always_inline struct task_struct *get_current(void)
  16{
  17        unsigned long sp_el0;
  18
  19        asm ("mrs %0, sp_el0" : "=r" (sp_el0));
  20
  21        return (struct task_struct *)sp_el0;
  22}
  23
  24#define current get_current()
  25
  26#endif /* __ASSEMBLY__ */
  27
  28#endif /* __ASM_CURRENT_H */
  29
  30