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Commit aab02f0a authored by Jaswinder Singh's avatar Jaswinder Singh Committed by Ingo Molnar
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x86: process_64.c declare __switch_to() and sys_arch_prctl before they get used 



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: default avatarJaswinder Singh <jaswinder@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d6be89ad

arch/x86/include/asm/prctl.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -6,5 +6,8 @@ 
#define ARCH_GET_FS 0x1003

#define ARCH_GET_FS 0x1003

#define ARCH_GET_GS 0x1004

#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 */
 
#endif /* _ASM_X86_PRCTL_H */

arch/x86/include/asm/system.h

+2 −2
Original line number Original line Diff line number Diff line
@@ -17,12 +17,12 @@ 
# define AT_VECTOR_SIZE_ARCH 1

# define AT_VECTOR_SIZE_ARCH 1

#endif

#endif





#ifdef CONFIG_X86_32



struct task_struct; /* one of the stranger aspects of C forward declarations */

struct task_struct; /* one of the stranger aspects of C forward declarations */

struct task_struct *__switch_to(struct task_struct *prev,

struct task_struct *__switch_to(struct task_struct *prev,

				struct task_struct *next);

				struct task_struct *next);





#ifdef CONFIG_X86_32



/*

/*

 * Saving eflags is important. It switches not only IOPL between tasks,

 * Saving eflags is important. It switches not only IOPL between tasks,

 * it also protects other tasks from NT leaking through sysenter etc.

 * it also protects other tasks from NT leaking through sysenter etc.