Commit f0766440 authored by Christoph Lameter's avatar Christoph Lameter Committed by Thomas Gleixner
Browse files

x86: unify current.h 



Simply stitch these together. There are just two definitions that are shared
but the file is resonably small and putting these things together shows that
further unifications requires a unification of the per cpu / pda handling
between both arches.

Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent bfe4bb15

include/asm-x86/current.h

+38 −4
Original line number Diff line number Diff line 
#ifndef _X86_CURRENT_H

#define _X86_CURRENT_H



#ifdef CONFIG_X86_32

# include "current_32.h"

#else

# include "current_64.h"

#endif
 
#include <linux/compiler.h>

#include <asm/percpu.h>



struct task_struct;



DECLARE_PER_CPU(struct task_struct *, current_task);

static __always_inline struct task_struct *get_current(void)

{

	return x86_read_percpu(current_task);

}



#else /* X86_32 */



#ifndef __ASSEMBLY__

#include <asm/pda.h>



struct task_struct;



static __always_inline struct task_struct *get_current(void)

{

	return read_pda(pcurrent);

}



#else /* __ASSEMBLY__ */



#include <asm/asm-offsets.h>

#define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg



#endif /* __ASSEMBLY__ */



#endif /* X86_32 */



#define current get_current()



#endif /* X86_CURRENT_H */

include/asm-x86/current_32.h

deleted100644 → 0
+0 −17
Original line number Diff line number Diff line 
#ifndef _I386_CURRENT_H

#define _I386_CURRENT_H



#include <linux/compiler.h>

#include <asm/percpu.h>



struct task_struct;



DECLARE_PER_CPU(struct task_struct *, current_task);

static __always_inline struct task_struct *get_current(void)

{

	return x86_read_percpu(current_task);

}



#define current get_current()



#endif /* !(_I386_CURRENT_H) */

include/asm-x86/current_64.h

deleted100644 → 0
+0 −27
Original line number Diff line number Diff line 
#ifndef _X86_64_CURRENT_H

#define _X86_64_CURRENT_H



#if !defined(__ASSEMBLY__)

struct task_struct;



#include <asm/pda.h>



static inline struct task_struct *get_current(void)

{

	struct task_struct *t = read_pda(pcurrent);

	return t;

}



#define current get_current()



#else



#ifndef ASM_OFFSET_H

#include <asm/asm-offsets.h>

#endif



#define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg



#endif



#endif /* !(_X86_64_CURRENT_H) */