LXR linux/arch/arc/include/asm/switch

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   4 */
   5
   6#ifndef _ASM_ARC_SWITCH_TO_H
   7#define _ASM_ARC_SWITCH_TO_H
   8
   9#ifndef __ASSEMBLY__
  10
  11#include <linux/sched.h>
  12#include <asm/dsp-impl.h>
  13#include <asm/fpu.h>
  14
  15#ifdef CONFIG_ARC_PLAT_EZNPS
  16extern void dp_save_restore(struct task_struct *p, struct task_struct *n);
  17#define ARC_EZNPS_DP_PREV(p, n)      dp_save_restore(p, n)
  18#else
  19#define ARC_EZNPS_DP_PREV(p, n)
  20
  21#endif /* !CONFIG_ARC_PLAT_EZNPS */
  22
  23struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n);
  24
  25#define switch_to(prev, next, last)     \
  26do {                                    \
  27        ARC_EZNPS_DP_PREV(prev, next);  \
  28        dsp_save_restore(prev, next);   \
  29        fpu_save_restore(prev, next);   \
  30        last = __switch_to(prev, next);\
  31        mb();                           \
  32} while (0)
  33
  34#endif
  35
  36#endif
  37