arch/arc/include/asm/switch_to.h

   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
  16 extern 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
  23 struct task_struct *__switch_to(struct task_struct *p, struct task_struct *n);
  24
  25 #define switch_to(prev, next, last)     \
  26 do {                                    \
  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