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Message-ID: <20081227051943.GE3295@localhost.localdomain>
Date: Sat, 27 Dec 2008 14:19:45 +0900
From: Akinobu Mita <akinobu.mita@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 4/4] x86: use generic thread_info allocator
Use generic thread_info allocator for x86.
Because thread_info allocator for x86 and generic one are same now.
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
---
arch/x86/include/asm/page_32.h | 6 +++---
arch/x86/include/asm/page_64.h | 4 ++--
arch/x86/include/asm/thread_info.h | 13 -------------
arch/x86/kernel/process.c | 5 -----
4 files changed, 5 insertions(+), 23 deletions(-)
Index: 2.6/arch/x86/include/asm/thread_info.h
===================================================================
--- 2.6.orig/arch/x86/include/asm/thread_info.h
+++ 2.6/arch/x86/include/asm/thread_info.h
@@ -147,18 +147,6 @@ struct thread_info {
#define PREEMPT_ACTIVE 0x10000000
-/* thread information allocation */
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO)
-#else
-#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))
-
#ifdef CONFIG_X86_32
#define STACK_WARN (THREAD_SIZE/8)
@@ -257,7 +245,6 @@ static inline void set_restore_sigmask(v
#ifndef __ASSEMBLY__
extern void arch_task_cache_init(void);
-extern void free_thread_info(struct thread_info *ti);
extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
#define arch_task_cache_init arch_task_cache_init
Index: 2.6/arch/x86/kernel/process.c
===================================================================
--- 2.6.orig/arch/x86/kernel/process.c
+++ 2.6/arch/x86/kernel/process.c
@@ -38,11 +38,6 @@ void free_thread_xstate(struct task_stru
}
}
-void free_thread_info(struct thread_info *ti)
-{
- free_pages((unsigned long)ti, get_order(THREAD_SIZE));
-}
-
static struct kmem_cache *task_struct_cachep;
struct task_struct *alloc_task_struct(void)
Index: 2.6/arch/x86/include/asm/page_32.h
===================================================================
--- 2.6.orig/arch/x86/include/asm/page_32.h
+++ 2.6/arch/x86/include/asm/page_32.h
@@ -14,11 +14,11 @@
#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
#ifdef CONFIG_4KSTACKS
-#define THREAD_ORDER 0
+#define THREAD_SIZE_ORDER 0
#else
-#define THREAD_ORDER 1
+#define THREAD_SIZE_ORDER 1
#endif
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
#define STACKFAULT_STACK 0
#define DOUBLEFAULT_STACK 1
Index: 2.6/arch/x86/include/asm/page_64.h
===================================================================
--- 2.6.orig/arch/x86/include/asm/page_64.h
+++ 2.6/arch/x86/include/asm/page_64.h
@@ -3,8 +3,8 @@
#define PAGETABLE_LEVELS 4
-#define THREAD_ORDER 1
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SIZE_ORDER 1
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
#define CURRENT_MASK (~(THREAD_SIZE - 1))
#define EXCEPTION_STACK_ORDER 0
--
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