kernel-ark/include/asm-i386/current.h
Jeremy Fitzhardinge ec7fcaabbf [PATCH] i386: Implement "current" with the PDA
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 <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
2006-12-07 02:14:03 +01:00

17 lines
278 B
C

#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) */