arch/arm64/include/asm/current.h

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