GNU Linux-libre 4.19.281-gnu1
[releases.git] / arch / xtensa / include / asm / switch_to.h
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 2001 - 2005 Tensilica Inc.
7  */
8
9 #ifndef _XTENSA_SWITCH_TO_H
10 #define _XTENSA_SWITCH_TO_H
11
12 /* * switch_to(n) should switch tasks to task nr n, first
13  * checking that n isn't the current task, in which case it does nothing.
14  */
15 extern void *_switch_to(void *last, void *next);
16
17 #define switch_to(prev,next,last)               \
18 do {                                            \
19         (last) = _switch_to(prev, next);        \
20 } while(0)
21
22 #endif /* _XTENSA_SWITCH_TO_H */