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Linux/arch/arm64/include/asm/current.h

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  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 
 29 

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