[linux-2.6-block.git] / arch / x86 / include / asm / current.h

#ifndef _ASM_X86_CURRENT_H
#define _ASM_X86_CURRENT_H

#ifdef CONFIG_X86_32
#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 /* _ASM_X86_CURRENT_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_CURRENT_H
1965aae3 PA	2	#define _ASM_X86_CURRENT_H
f0766440	3
96a388de	4	#ifdef CONFIG_X86_32
f0766440 CL	5	#include <linux/compiler.h>
	6	#include <asm/percpu.h>
	7
	8	struct task_struct;
	9
	10	DECLARE_PER_CPU(struct task_struct *, current_task);
	11	static __always_inline struct task_struct *get_current(void)
	12	{
	13	return x86_read_percpu(current_task);
	14	}
	15
	16	#else /* X86_32 */
	17
	18	#ifndef __ASSEMBLY__
	19	#include <asm/pda.h>
	20
	21	struct task_struct;
	22
	23	static __always_inline struct task_struct *get_current(void)
	24	{
	25	return read_pda(pcurrent);
	26	}
	27
	28	#else /* __ASSEMBLY__ */
	29
	30	#include <asm/asm-offsets.h>
	31	#define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg
	32
	33	#endif /* __ASSEMBLY__ */
	34
	35	#endif /* X86_32 */
	36
	37	#define current get_current()
	38
1965aae3	39	#endif /* _ASM_X86_CURRENT_H */