current.h 680 B

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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. #ifndef _ASM_POWERPC_CURRENT_H
  3. #define _ASM_POWERPC_CURRENT_H
  4. #ifdef __KERNEL__
  5. /*
  6. */
  7. struct task_struct;
  8. #ifdef __powerpc64__
  9. #include <linux/stddef.h>
  10. #include <asm/paca.h>
  11. static inline struct task_struct *get_current(void)
  12. {
  13. struct task_struct *task;
  14. /* get_current can be cached by the compiler, so no volatile */
  15. asm ("ld %0,%1(13)"
  16. : "=r" (task)
  17. : "i" (offsetof(struct paca_struct, __current)));
  18. return task;
  19. }
  20. #define current get_current()
  21. #else
  22. /*
  23. * We keep `current' in r2 for speed.
  24. */
  25. register struct task_struct *current asm ("r2");
  26. #endif
  27. #endif /* __KERNEL__ */
  28. #endif /* _ASM_POWERPC_CURRENT_H */