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x86: process_64.c declare __switch_to() and sys_arch_prctl before they get used

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Impact: cleanup

In asm/system.h moved out __switch_to from CONFIG_X86_32 as it is common for
both 32 and 64 bit.

In asm/pctl.h defined sys_arch_prctl
Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jaswinder Singh 2008-12-15 22:23:54 +05:30 committed by Ingo Molnar
parent d6be89ad66
commit aab02f0ae2
2 changed files with 5 additions and 2 deletions
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3
arch/x86/include/asm/prctl.h
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@ -6,5 +6,8 @@
#define ARCH_GET_FS 0x1003
#define ARCH_GET_GS 0x1004
#ifdef CONFIG_X86_64
extern long sys_arch_prctl(int, unsigned long);
#endif /* CONFIG_X86_64 */
#endif /* _ASM_X86_PRCTL_H */

4
arch/x86/include/asm/system.h
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@ -17,12 +17,12 @@
# define AT_VECTOR_SIZE_ARCH 1
#endif
#ifdef CONFIG_X86_32
struct task_struct; /* one of the stranger aspects of C forward declarations */
struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
#ifdef CONFIG_X86_32
/*
* Saving eflags is important. It switches not only IOPL between tasks,
* it also protects other tasks from NT leaking through sysenter etc.