Messages in this thread Patch in this message | | | Date | Fri, 17 Dec 2004 20:13:31 +0900 (JST) | Subject | [PATCH 2.6.10-rc3-mm1] m32r: include/asm-m32r/thread_info.h minor updates (1/2) | From | Hirokazu Takata <> |
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[PATCH 2.6.10-rc3-mm1] m32r: include/asm-m32r/thread_info.h minor updates (1/2) - Use THREAD_SIZE for __ASSEMBLY__ portion. - Update comments. - Fix a typo: user-thead --> user-thread.
NOTE: Now there are two THREAD_SIZE definitions in the following patch, one is in C part and the other is in __ASSEMBLY__ part. I'm going to consolidate these THREAD_SIZE definitions. So, I have to change PAGE_SIZE definition of include/asm-m32r/page.h to be includable into asm portion...
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> ---
include/asm-m32r/thread_info.h | 26 +++++++++++++++----------- 1 files changed, 15 insertions(+), 11 deletions(-)
diff -ruNp a/include/asm-m32r/thread_info.h b/include/asm-m32r/thread_info.h --- a/include/asm-m32r/thread_info.h 2004-12-16 12:52:41.000000000 +0900 +++ b/include/asm-m32r/thread_info.h 2004-12-16 13:39:33.000000000 +0900 @@ -1,12 +1,13 @@ -/* thread_info.h: i386 low-level thread information +#ifndef _ASM_M32R_THREAD_INFO_H +#define _ASM_M32R_THREAD_INFO_H + +/* thread_info.h: m32r low-level thread information * * Copyright (C) 2002 David Howells (dhowells@redhat.com) * - Incorporating suggestions made by Linus Torvalds and Dave Miller + * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> */ -#ifndef _ASM_THREAD_INFO_H -#define _ASM_THREAD_INFO_H - #ifdef __KERNEL__ #ifndef __ASSEMBLY__ @@ -30,7 +31,7 @@ struct thread_info { __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: - 0-0xBFFFFFFF for user-thead + 0-0xBFFFFFFF for user-thread 0-0xFFFFFFFF for kernel-thread */ struct restart_block restart_block; @@ -77,22 +78,23 @@ struct thread_info { #define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) +#define THREAD_SIZE (2*PAGE_SIZE) + /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { struct thread_info *ti; __asm__ __volatile__ ( - "ldi %0, #0xffffe000; \n\t" - "and %0, sp; \n\t" - : "=r" (ti) + "ldi %0, #%1 \n\t" + "and %0, sp \n\t" + : "=r" (ti) : "i" (~(THREAD_SIZE - 1)) ); return ti; } /* thread information allocation */ -#define THREAD_SIZE (2*PAGE_SIZE) #define alloc_thread_info(task) \ ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) #define free_thread_info(ti) free_pages((unsigned long) (ti), 1) @@ -116,10 +118,12 @@ static inline unsigned int get_thread_fa #else /* !__ASSEMBLY__ */ +#define THREAD_SIZE 8192 + /* how to get the thread information struct from ASM */ #define GET_THREAD_INFO(reg) GET_THREAD_INFO reg .macro GET_THREAD_INFO reg - ldi \reg, #0xffffe000 + ldi \reg, #-THREAD_SIZE and \reg, sp .endm @@ -162,4 +170,4 @@ static inline unsigned int get_thread_fa #endif /* __KERNEL__ */ -#endif /* _ASM_THREAD_INFO_H */ +#endif /* _ASM_M32R_THREAD_INFO_H */ -- Hirokazu Takata <takata@linux-m32r.org> Linux/M32R Project: http://www.linux-m32r.org/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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