34 lines
		
	
	
	
		
			992 B
			
		
	
	
	
		
			C
		
	
	
	
	
	
		
		
			
		
	
	
			34 lines
		
	
	
	
		
			992 B
			
		
	
	
	
		
			C
		
	
	
	
	
	
|   | /*
 | ||
|  |  *  Port on Texas Instruments TMS320C6x architecture | ||
|  |  * | ||
|  |  *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated | ||
|  |  *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) | ||
|  |  * | ||
|  |  *  This program is free software; you can redistribute it and/or modify | ||
|  |  *  it under the terms of the GNU General Public License version 2 as | ||
|  |  *  published by the Free Software Foundation. | ||
|  |  */ | ||
|  | #ifndef _ASM_C6X_SWITCH_TO_H
 | ||
|  | #define _ASM_C6X_SWITCH_TO_H
 | ||
|  | 
 | ||
|  | #include <linux/linkage.h>
 | ||
|  | 
 | ||
|  | #define prepare_to_switch()    do { } while (0)
 | ||
|  | 
 | ||
|  | struct task_struct; | ||
|  | struct thread_struct; | ||
|  | asmlinkage void *__switch_to(struct thread_struct *prev, | ||
|  | 			     struct thread_struct *next, | ||
|  | 			     struct task_struct *tsk); | ||
|  | 
 | ||
|  | #define switch_to(prev, next, last)				\
 | ||
|  | 	do {							\ | ||
|  | 		current->thread.wchan = (u_long) __builtin_return_address(0); \ | ||
|  | 		(last) = __switch_to(&(prev)->thread,		\ | ||
|  | 				     &(next)->thread, (prev));	\ | ||
|  | 		mb();						\ | ||
|  | 		current->thread.wchan = 0;			\ | ||
|  | 	} while (0) | ||
|  | 
 | ||
|  | #endif /* _ASM_C6X_SWITCH_TO_H */
 |