From b69c49b78457f681ecfb3147bd968434ee6559c1 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Fri, 25 Jul 2008 01:45:40 -0700 Subject: [PATCH] clean up duplicated alloc/free_thread_info We duplicate alloc/free_thread_info defines on many platforms (the majority uses __get_free_pages/free_pages). This patch defines common defines and removes these duplicated defines. __HAVE_ARCH_THREAD_INFO_ALLOCATOR is introduced for platforms that do something different. Signed-off-by: FUJITA Tomonori Acked-by: Russell King Cc: Pekka Enberg Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-alpha/thread_info.h | 4 +--- include/asm-arm/thread_info.h | 13 ------------- include/asm-avr32/thread_info.h | 4 ---- include/asm-blackfin/thread_info.h | 5 +---- include/asm-cris/thread_info.h | 2 ++ include/asm-frv/thread_info.h | 2 ++ include/asm-h8300/thread_info.h | 5 +---- include/asm-ia64/thread_info.h | 2 ++ include/asm-m32r/thread_info.h | 2 ++ include/asm-m68k/thread_info.h | 8 +------- include/asm-m68knommu/thread_info.h | 4 ---- include/asm-mips/thread_info.h | 2 ++ include/asm-mn10300/thread_info.h | 2 ++ include/asm-parisc/thread_info.h | 10 +++------- include/asm-powerpc/thread_info.h | 14 +++----------- include/asm-s390/thread_info.h | 5 +---- include/asm-sh/thread_info.h | 2 ++ include/asm-sparc/thread_info_32.h | 2 ++ include/asm-sparc/thread_info_64.h | 2 ++ include/asm-um/thread_info.h | 16 +--------------- include/asm-x86/thread_info.h | 2 ++ include/asm-xtensa/thread_info.h | 5 +---- kernel/fork.c | 17 +++++++++++++++++ 23 files changed, 50 insertions(+), 80 deletions(-) diff --git a/include/asm-alpha/thread_info.h b/include/asm-alpha/thread_info.h index fb318519629..15fda434442 100644 --- a/include/asm-alpha/thread_info.h +++ b/include/asm-alpha/thread_info.h @@ -50,10 +50,8 @@ register struct thread_info *__current_thread_info __asm__("$8"); #define current_thread_info() __current_thread_info /* Thread information allocation. */ +#define THREAD_SIZE_ORDER 1 #define THREAD_SIZE (2*PAGE_SIZE) -#define alloc_thread_info(tsk) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) #endif /* __ASSEMBLY__ */ diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h index f5a66478631..d4be2d64616 100644 --- a/include/asm-arm/thread_info.h +++ b/include/asm-arm/thread_info.h @@ -97,19 +97,6 @@ static inline struct thread_info *current_thread_info(void) return (struct thread_info *)(sp & ~(THREAD_SIZE - 1)); } -/* thread information allocation */ -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, \ - THREAD_SIZE_ORDER)) -#else -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER)) -#endif - -#define free_thread_info(info) \ - free_pages((unsigned long)info, THREAD_SIZE_ORDER); - #define thread_saved_pc(tsk) \ ((unsigned long)(pc_pointer(task_thread_info(tsk)->cpu_context.pc))) #define thread_saved_fp(tsk) \ diff --git a/include/asm-avr32/thread_info.h b/include/asm-avr32/thread_info.h index df68631b7b2..294b25f9323 100644 --- a/include/asm-avr32/thread_info.h +++ b/include/asm-avr32/thread_info.h @@ -61,10 +61,6 @@ static inline struct thread_info *current_thread_info(void) return (struct thread_info *)addr; } -/* thread information allocation */ -#define alloc_thread_info(ti) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER)) -#define free_thread_info(ti) free_pages((unsigned long)(ti), 1) #define get_thread_info(ti) get_task_struct((ti)->task) #define put_thread_info(ti) put_task_struct((ti)->task) diff --git a/include/asm-blackfin/thread_info.h b/include/asm-blackfin/thread_info.h index bc2fe5accf2..642769329d1 100644 --- a/include/asm-blackfin/thread_info.h +++ b/include/asm-blackfin/thread_info.h @@ -42,6 +42,7 @@ /* * Size of kernel stack for each process. This must be a power of 2... */ +#define THREAD_SIZE_ORDER 1 #define THREAD_SIZE 8192 /* 2 pages */ #ifndef __ASSEMBLY__ @@ -94,10 +95,6 @@ static inline struct thread_info *current_thread_info(void) return (struct thread_info *)((long)ti & ~((long)THREAD_SIZE-1)); } -/* thread information allocation */ -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL, 1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) #endif /* __ASSEMBLY__ */ /* diff --git a/include/asm-cris/thread_info.h b/include/asm-cris/thread_info.h index 784668ab0fa..7efe1000f99 100644 --- a/include/asm-cris/thread_info.h +++ b/include/asm-cris/thread_info.h @@ -11,6 +11,8 @@ #ifdef __KERNEL__ +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + #ifndef __ASSEMBLY__ #include #include diff --git a/include/asm-frv/thread_info.h b/include/asm-frv/thread_info.h index 348b8f1df17..b7ac6bf2844 100644 --- a/include/asm-frv/thread_info.h +++ b/include/asm-frv/thread_info.h @@ -82,6 +82,8 @@ register struct thread_info *__current_thread_info asm("gr15"); #define current_thread_info() ({ __current_thread_info; }) +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) \ diff --git a/include/asm-h8300/thread_info.h b/include/asm-h8300/thread_info.h index 27bb95e2944..aafd4d322ec 100644 --- a/include/asm-h8300/thread_info.h +++ b/include/asm-h8300/thread_info.h @@ -49,6 +49,7 @@ struct thread_info { /* * Size of kernel stack for each process. This must be a power of 2... */ +#define THREAD_SIZE_ORDER 1 #define THREAD_SIZE 8192 /* 2 pages */ @@ -65,10 +66,6 @@ static inline struct thread_info *current_thread_info(void) return ti; } -/* thread information allocation */ -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL, 1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) #endif /* __ASSEMBLY__ */ /* diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index 2422ac61658..7c60fcdd2ef 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -54,6 +54,8 @@ struct thread_info { }, \ } +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + #ifndef ASM_OFFSETS_C /* how to get the thread information struct from C */ #define current_thread_info() ((struct thread_info *) ((char *) current + IA64_TASK_SIZE)) diff --git a/include/asm-m32r/thread_info.h b/include/asm-m32r/thread_info.h index 1effcd0f5e6..8589d462df2 100644 --- a/include/asm-m32r/thread_info.h +++ b/include/asm-m32r/thread_info.h @@ -94,6 +94,8 @@ static inline struct thread_info *current_thread_info(void) return ti; } +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) \ diff --git a/include/asm-m68k/thread_info.h b/include/asm-m68k/thread_info.h index d635a375248..abc002798a2 100644 --- a/include/asm-m68k/thread_info.h +++ b/include/asm-m68k/thread_info.h @@ -25,13 +25,7 @@ struct thread_info { } /* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */ -#if PAGE_SHIFT == 13 /* 8k machines */ -#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,0)) -#define free_thread_info(ti) free_pages((unsigned long)(ti),0) -#else /* otherwise assume 4k pages */ -#define alloc_thread_info(tsk) ((struct thread_info *)__get_free_pages(GFP_KERNEL,1)) -#define free_thread_info(ti) free_pages((unsigned long)(ti),1) -#endif /* PAGE_SHIFT == 13 */ +#define THREAD_SIZE_ORDER (13 - PAGE_SHIFT) #define init_thread_info (init_task.thread.info) #define init_stack (init_thread_union.stack) diff --git a/include/asm-m68knommu/thread_info.h b/include/asm-m68knommu/thread_info.h index 95996d978be..0c9bc095f3f 100644 --- a/include/asm-m68knommu/thread_info.h +++ b/include/asm-m68knommu/thread_info.h @@ -71,10 +71,6 @@ static inline struct thread_info *current_thread_info(void) return ti; } -/* thread information allocation */ -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_SIZE_ORDER) #endif /* __ASSEMBLY__ */ #define PREEMPT_ACTIVE 0x4000000 diff --git a/include/asm-mips/thread_info.h b/include/asm-mips/thread_info.h index b2772df1a1b..bb3060699df 100644 --- a/include/asm-mips/thread_info.h +++ b/include/asm-mips/thread_info.h @@ -82,6 +82,8 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #define THREAD_MASK (THREAD_SIZE - 1UL) +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) \ ({ \ diff --git a/include/asm-mn10300/thread_info.h b/include/asm-mn10300/thread_info.h index e397e719278..78a3881f3c1 100644 --- a/include/asm-mn10300/thread_info.h +++ b/include/asm-mn10300/thread_info.h @@ -112,6 +112,8 @@ static inline unsigned long current_stack_pointer(void) return sp; } +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL) diff --git a/include/asm-parisc/thread_info.h b/include/asm-parisc/thread_info.h index 2d9c7500867..9f812741c35 100644 --- a/include/asm-parisc/thread_info.h +++ b/include/asm-parisc/thread_info.h @@ -34,15 +34,11 @@ struct thread_info { /* thread information allocation */ -#define THREAD_ORDER 2 +#define THREAD_SIZE_ORDER 2 /* Be sure to hunt all references to this down when you change the size of * the kernel stack */ -#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) -#define THREAD_SHIFT (PAGE_SHIFT + THREAD_ORDER) - -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL, THREAD_ORDER)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER) +#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) +#define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) /* how to get the thread information struct from C */ #define current_thread_info() ((struct thread_info *)mfctl(30)) diff --git a/include/asm-powerpc/thread_info.h b/include/asm-powerpc/thread_info.h index b705c2a7651..a9db562df69 100644 --- a/include/asm-powerpc/thread_info.h +++ b/include/asm-powerpc/thread_info.h @@ -66,20 +66,12 @@ struct thread_info { #if THREAD_SHIFT >= PAGE_SHIFT -#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT) - -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL | \ - __GFP_ZERO, THREAD_ORDER)) -#else -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL, THREAD_ORDER)) -#endif -#define free_thread_info(ti) free_pages((unsigned long)ti, THREAD_ORDER) +#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) #else /* THREAD_SHIFT < PAGE_SHIFT */ +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + extern struct thread_info *alloc_thread_info(struct task_struct *tsk); extern void free_thread_info(struct thread_info *ti); diff --git a/include/asm-s390/thread_info.h b/include/asm-s390/thread_info.h index 99bbed99a3b..91a8f93ad35 100644 --- a/include/asm-s390/thread_info.h +++ b/include/asm-s390/thread_info.h @@ -78,10 +78,7 @@ static inline struct thread_info *current_thread_info(void) return (struct thread_info *)((*(unsigned long *) __LC_KERNEL_STACK)-THREAD_SIZE); } -/* thread information allocation */ -#define alloc_thread_info(tsk) ((struct thread_info *) \ - __get_free_pages(GFP_KERNEL,THREAD_ORDER)) -#define free_thread_info(ti) free_pages((unsigned long) (ti),THREAD_ORDER) +#define THREAD_SIZE_ORDER THREAD_ORDER #endif diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h index c50e5d35fe8..5131e390752 100644 --- a/include/asm-sh/thread_info.h +++ b/include/asm-sh/thread_info.h @@ -92,6 +92,8 @@ static inline struct thread_info *current_thread_info(void) return ti; } +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + /* thread information allocation */ #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(ti) kzalloc(THREAD_SIZE, GFP_KERNEL) diff --git a/include/asm-sparc/thread_info_32.h b/include/asm-sparc/thread_info_32.h index 91b9f5888c8..2cf9db04405 100644 --- a/include/asm-sparc/thread_info_32.h +++ b/include/asm-sparc/thread_info_32.h @@ -86,6 +86,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define THREAD_INFO_ORDER 1 #endif +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info, void) #define alloc_thread_info(tsk) BTFIXUP_CALL(alloc_thread_info)() diff --git a/include/asm-sparc/thread_info_64.h b/include/asm-sparc/thread_info_64.h index c6d2e6c7f84..960969d5ad0 100644 --- a/include/asm-sparc/thread_info_64.h +++ b/include/asm-sparc/thread_info_64.h @@ -155,6 +155,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define __THREAD_INFO_ORDER 0 #endif /* PAGE_SHIFT == 13 */ +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + #ifdef CONFIG_DEBUG_STACK_USAGE #define alloc_thread_info(tsk) \ ({ \ diff --git a/include/asm-um/thread_info.h b/include/asm-um/thread_info.h index 356b83e2c22..e07e72846c7 100644 --- a/include/asm-um/thread_info.h +++ b/include/asm-um/thread_info.h @@ -53,21 +53,7 @@ static inline struct thread_info *current_thread_info(void) return ti; } -#ifdef CONFIG_DEBUG_STACK_USAGE - -#define alloc_thread_info(tsk) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, \ - CONFIG_KERNEL_STACK_ORDER)) -#else - -/* thread information allocation */ -#define alloc_thread_info(tsk) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL, \ - CONFIG_KERNEL_STACK_ORDER)) -#endif - -#define free_thread_info(ti) \ - free_pages((unsigned long)(ti),CONFIG_KERNEL_STACK_ORDER) +#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER #endif diff --git a/include/asm-x86/thread_info.h b/include/asm-x86/thread_info.h index 3f2de105098..da0a675adf9 100644 --- a/include/asm-x86/thread_info.h +++ b/include/asm-x86/thread_info.h @@ -152,6 +152,8 @@ struct thread_info { #define THREAD_FLAGS GFP_KERNEL #endif +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + #define alloc_thread_info(tsk) \ ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER)) diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h index a2c640682ed..7e4131dd546 100644 --- a/include/asm-xtensa/thread_info.h +++ b/include/asm-xtensa/thread_info.h @@ -111,10 +111,6 @@ static inline struct thread_info *current_thread_info(void) return ti; } -/* thread information allocation */ -#define alloc_thread_info(tsk) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) -#define free_thread_info(ti) free_pages((unsigned long) (ti), 1) - #else /* !__ASSEMBLY__ */ /* how to get the thread information struct from ASM */ @@ -160,6 +156,7 @@ static inline struct thread_info *current_thread_info(void) #define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */ #define THREAD_SIZE 8192 //(2*PAGE_SIZE) +#define THREAD_SIZE_ORDER 1 #endif /* __KERNEL__ */ #endif /* _XTENSA_THREAD_INFO */ diff --git a/kernel/fork.c b/kernel/fork.c index 552c8d8e77a..5a5d6fef341 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -93,6 +93,23 @@ int nr_processes(void) static struct kmem_cache *task_struct_cachep; #endif +#ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR +static inline struct thread_info *alloc_thread_info(struct task_struct *tsk) +{ +#ifdef CONFIG_DEBUG_STACK_USAGE + gfp_t mask = GFP_KERNEL | __GFP_ZERO; +#else + gfp_t mask = GFP_KERNEL; +#endif + return (struct thread_info *)__get_free_pages(mask, THREAD_SIZE_ORDER); +} + +static inline void free_thread_info(struct thread_info *ti) +{ + free_pages((unsigned long)ti, THREAD_SIZE_ORDER); +} +#endif + /* SLAB cache for signal_struct structures (tsk->signal) */ static struct kmem_cache *signal_cachep; -- 2.20.1