LXR linux/arch/c6x/include/asm/switch

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  Port on Texas Instruments TMS320C6x architecture
   4 *
   5 *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
   6 *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
   7 */
   8#ifndef _ASM_C6X_SWITCH_TO_H
   9#define _ASM_C6X_SWITCH_TO_H
  10
  11#include <linux/linkage.h>
  12
  13#define prepare_to_switch()    do { } while (0)
  14
  15struct task_struct;
  16struct thread_struct;
  17asmlinkage void *__switch_to(struct thread_struct *prev,
  18                             struct thread_struct *next,
  19                             struct task_struct *tsk);
  20
  21#define switch_to(prev, next, last)                             \
  22        do {                                                    \
  23                current->thread.wchan = (u_long) __builtin_return_address(0); \
  24                (last) = __switch_to(&(prev)->thread,           \
  25                                     &(next)->thread, (prev));  \
  26                mb();                                           \
  27                current->thread.wchan = 0;                      \
  28        } while (0)
  29
  30#endif /* _ASM_C6X_SWITCH_TO_H */
  31