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 @@ -/* - * include/asm-sparc/current.h +/* include/asm-sparc/current.h * * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com) + * Copyright (C) 2007 David S. Miller (davem@davemloft.net) * * Derived from "include/asm-s390/current.h" by * Martin Schwidefsky (schwidefsky@de.ibm.com) * Derived from "include/asm-i386/current.h" - */ -#ifndef _ASM_CURRENT_H -#define _ASM_CURRENT_H - -/* - * At the sparc64 DaveM keeps current_thread_info in %g4. - * We might want to consider doing the same to shave a few cycles. - */ +*/ +#ifndef _SPARC_CURRENT_H +#define _SPARC_CURRENT_H #include <linux/thread_info.h> -struct task_struct; +#ifdef CONFIG_SPARC64 +register struct task_struct *current asm("g4"); +#endif -/* Two stage process (inline + #define) for type-checking. */ -/* We also obfuscate get_current() to check if anyone used that by mistake. */ +#ifdef CONFIG_SPARC32 +/* We might want to consider using %g4 like sparc64 to shave a few cycles. + * + * Two stage process (inline + #define) for type-checking. + * We also obfuscate get_current() to check if anyone used that by mistake. + */ +struct task_struct; static inline struct task_struct *__get_current(void) { return current_thread_info()->task; } #define current __get_current() +#endif -#endif /* !(_ASM_CURRENT_H) */ +#endif /* !(_SPARC_CURRENT_H) */ |