Commit 38e7c572 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

x86: Use common threadinfo allocator 



The only difference is the free_thread_info function, which frees
xstate.

Use the new arch_release_task_struct() function instead and switch
over to the core allocator.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120505150141.559556763@linutronix.de
Cc: x86@kernel.org
parent 7b8fe057

arch/x86/include/asm/boot.h

+1 −1
Original line number Diff line number Diff line
@@ -19,7 +19,7 @@ 
#ifdef CONFIG_X86_64

#define MIN_KERNEL_ALIGN_LG2	PMD_SHIFT

#else

#define MIN_KERNEL_ALIGN_LG2	(PAGE_SHIFT + THREAD_ORDER)

#define MIN_KERNEL_ALIGN_LG2	(PAGE_SHIFT + THREAD_SIZE_ORDER)

#endif

#define MIN_KERNEL_ALIGN	(_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)

arch/x86/include/asm/page_32_types.h

+2 −2
Original line number Diff line number Diff line
@@ -15,8 +15,8 @@ 
 */

#define __PAGE_OFFSET		_AC(CONFIG_PAGE_OFFSET, UL)



#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 STACKFAULT_STACK 0

#define DOUBLEFAULT_STACK 1

arch/x86/include/asm/page_64_types.h

+2 −2
Original line number Diff line number Diff line 
#ifndef _ASM_X86_PAGE_64_DEFS_H

#define _ASM_X86_PAGE_64_DEFS_H



#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

arch/x86/include/asm/thread_info.h

+1 −19
Original line number Diff line number Diff line
@@ -155,24 +155,6 @@ struct thread_info { 


#define PREEMPT_ACTIVE		0x10000000



/* thread information allocation */

#ifdef CONFIG_DEBUG_STACK_USAGE

#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)

#else

#define THREAD_FLAGS (GFP_KERNEL | __GFP_NOTRACK)

#endif



#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR



#define alloc_thread_info_node(tsk, node)				\

({									\

	struct page *page = alloc_pages_node(node, THREAD_FLAGS,	\

					     THREAD_ORDER);		\

	struct thread_info *ret = page ? page_address(page) : NULL;	\

									\

	ret;								\

})



#ifdef CONFIG_X86_32



#define STACK_WARN	(THREAD_SIZE/8)
@@ -282,7 +264,7 @@ static inline bool is_ia32_task(void) 


#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);

extern void arch_release_task_struct(struct task_struct *tsk);

#endif

#endif /* _ASM_X86_THREAD_INFO_H */

arch/x86/kernel/irq_32.c

+4 −4
Original line number Diff line number Diff line
@@ -127,8 +127,8 @@ void __cpuinit irq_ctx_init(int cpu) 
		return;



	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),

					       THREAD_FLAGS,

					       THREAD_ORDER));

					       THREADINFO_GFP,

					       THREAD_SIZE_ORDER));

	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));

	irqctx->tinfo.cpu		= cpu;

	irqctx->tinfo.preempt_count	= HARDIRQ_OFFSET;
@@ -137,8 +137,8 @@ void __cpuinit irq_ctx_init(int cpu) 
	per_cpu(hardirq_ctx, cpu) = irqctx;



	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),

					       THREAD_FLAGS,

					       THREAD_ORDER));

					       THREADINFO_GFP,

					       THREAD_SIZE_ORDER));

	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));

	irqctx->tinfo.cpu		= cpu;

	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);

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