switch_to.h 755 B

1234567891011121314151617181920212223242526
  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /* Generic task switch macro wrapper.
  3. *
  4. * It should be possible to use these on really simple architectures,
  5. * but it serves more as a starting point for new ports.
  6. *
  7. * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
  8. * Written by David Howells (dhowells@redhat.com)
  9. */
  10. #ifndef __ASM_GENERIC_SWITCH_TO_H
  11. #define __ASM_GENERIC_SWITCH_TO_H
  12. #include <linux/thread_info.h>
  13. /*
  14. * Context switching is now performed out-of-line in switch_to.S
  15. */
  16. extern struct task_struct *__switch_to(struct task_struct *,
  17. struct task_struct *);
  18. #define switch_to(prev, next, last) \
  19. do { \
  20. ((last) = __switch_to((prev), (next))); \
  21. } while (0)
  22. #endif /* __ASM_GENERIC_SWITCH_TO_H */