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
   9 struct task_struct;
  10
  11 /*
  12  * We don't use read_sysreg() as we want the compiler to cache the value where
  13  * possible.
  14  */
  15 static __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