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ec7fcaabb [PATCH] i386: Implement "current" with the PDA ... Browse Code »

Use the pcurrent field in the PDA to implement the "current" macro. This ends
up compiling down to a single instruction to get the current task.

Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Andi Kleen
Cc: Chuck Ebbert
Cc: Zachary Amsden
Cc: Jan Beulich
Cc: Andi Kleen
Signed-off-by: Andrew Morton

Jeremy Fitzhardinge
2006-12-07 09:14:03 +0800

current.h 278 Bytes

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#ifndef _I386_CURRENT_H
#define _I386_CURRENT_H

#include <asm/pda.h>
#include <linux/compiler.h>

struct task_struct;

static __always_inline struct task_struct *get_current(void)
{
	return read_pda(pcurrent);
}
 
#define current get_current()

#endif /* !(_I386_CURRENT_H) */