linux/include/asm-x86/current.h
Christoph Lameter f0766440dd 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: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-25 08:58:35 +02:00

40 lines
693 B
C

#ifndef _X86_CURRENT_H
#define _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 /* X86_CURRENT_H */