|  | #ifndef _ASM_POWERPC_CURRENT_H | 
|  | #define _ASM_POWERPC_CURRENT_H | 
|  | #ifdef __KERNEL__ | 
|  |  | 
|  | /* | 
|  | * This program is free software; you can redistribute it and/or | 
|  | * modify it under the terms of the GNU General Public License | 
|  | * as published by the Free Software Foundation; either version | 
|  | * 2 of the License, or (at your option) any later version. | 
|  | */ | 
|  |  | 
|  | struct task_struct; | 
|  |  | 
|  | #ifdef __powerpc64__ | 
|  | #include <asm/paca.h> | 
|  |  | 
|  | #define current		(get_paca()->__current) | 
|  |  | 
|  | #else | 
|  |  | 
|  | /* | 
|  | * We keep `current' in r2 for speed. | 
|  | */ | 
|  | register struct task_struct *current asm ("r2"); | 
|  |  | 
|  | #endif | 
|  |  | 
|  | #endif /* __KERNEL__ */ | 
|  | #endif /* _ASM_POWERPC_CURRENT_H */ |