diff options
Diffstat (limited to 'include/asm-sparc/current.h')
| -rw-r--r-- | include/asm-sparc/current.h | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/include/asm-sparc/current.h b/include/asm-sparc/current.h index 8fe7c82a5e21..8a1d9d6643b0 100644 --- a/include/asm-sparc/current.h +++ b/include/asm-sparc/current.h | |||
| @@ -1,31 +1,34 @@ | |||
| 1 | /* | 1 | /* include/asm-sparc/current.h |
| 2 | * include/asm-sparc/current.h | ||
| 3 | * | 2 | * |
| 4 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation | 3 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 5 | * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) | 4 | * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) |
| 5 | * Copyright (C) 2007 David S. Miller (davem@davemloft.net) | ||
| 6 | * | 6 | * |
| 7 | * Derived from "include/asm-s390/current.h" by | 7 | * Derived from "include/asm-s390/current.h" by |
| 8 | * Martin Schwidefsky (schwidefsky@de.ibm.com) | 8 | * Martin Schwidefsky (schwidefsky@de.ibm.com) |
| 9 | * Derived from "include/asm-i386/current.h" | 9 | * Derived from "include/asm-i386/current.h" |
| 10 | */ | 10 | */ |
| 11 | #ifndef _ASM_CURRENT_H | 11 | #ifndef _SPARC_CURRENT_H |
| 12 | #define _ASM_CURRENT_H | 12 | #define _SPARC_CURRENT_H |
| 13 | |||
| 14 | /* | ||
| 15 | * At the sparc64 DaveM keeps current_thread_info in %g4. | ||
| 16 | * We might want to consider doing the same to shave a few cycles. | ||
| 17 | */ | ||
| 18 | 13 | ||
| 19 | #include <linux/thread_info.h> | 14 | #include <linux/thread_info.h> |
| 20 | 15 | ||
| 21 | struct task_struct; | 16 | #ifdef CONFIG_SPARC64 |
| 17 | register struct task_struct *current asm("g4"); | ||
| 18 | #endif | ||
| 22 | 19 | ||
| 23 | /* Two stage process (inline + #define) for type-checking. */ | 20 | #ifdef CONFIG_SPARC32 |
| 24 | /* We also obfuscate get_current() to check if anyone used that by mistake. */ | 21 | /* We might want to consider using %g4 like sparc64 to shave a few cycles. |
| 22 | * | ||
| 23 | * Two stage process (inline + #define) for type-checking. | ||
| 24 | * We also obfuscate get_current() to check if anyone used that by mistake. | ||
| 25 | */ | ||
| 26 | struct task_struct; | ||
| 25 | static inline struct task_struct *__get_current(void) | 27 | static inline struct task_struct *__get_current(void) |
| 26 | { | 28 | { |
| 27 | return current_thread_info()->task; | 29 | return current_thread_info()->task; |
| 28 | } | 30 | } |
| 29 | #define current __get_current() | 31 | #define current __get_current() |
| 32 | #endif | ||
| 30 | 33 | ||
| 31 | #endif /* !(_ASM_CURRENT_H) */ | 34 | #endif /* !(_SPARC_CURRENT_H) */ |
