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2 * Copyright (C) 2004-2006 Atmel Corporation
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 #ifndef __ASM_AVR32_SWITCH_TO_H
9 #define __ASM_AVR32_SWITCH_TO_H
12 * Help PathFinder and other Nexus-compliant debuggers keep track of
13 * the current PID by emitting an Ownership Trace Message each time we
16 #ifdef CONFIG_OWNERSHIP_TRACE
18 #define ocd_switch(prev, next) \
20 ocd_write(PID, prev->pid); \
21 ocd_write(PID, next->pid); \
24 #define ocd_switch(prev, next)
28 * switch_to(prev, next, last) should switch from task `prev' to task
29 * `next'. `prev' will never be the same as `next'.
31 * We just delegate everything to the __switch_to assembly function,
32 * which is implemented in arch/avr32/kernel/switch_to.S
34 * mb() tells GCC not to cache `current' across this call.
38 extern struct task_struct
*__switch_to(struct task_struct
*,
40 struct cpu_context
*);
41 #define switch_to(prev, next, last) \
43 ocd_switch(prev, next); \
44 last = __switch_to(prev, &prev->thread.cpu_context + 1, \
45 &next->thread.cpu_context); \
49 #endif /* __ASM_AVR32_SWITCH_TO_H */