From ec7fcaabbfb3c5bd5189f857b6ac7bb9745ef291 Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Thu, 7 Dec 2006 02:14:03 +0100
Subject: [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>
---
 arch/i386/kernel/asm-offsets.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/i386/kernel/asm-offsets.c')

diff --git a/arch/i386/kernel/asm-offsets.c b/arch/i386/kernel/asm-offsets.c
index 85f1b038e9c3..0666eb0ed7bc 100644
--- a/arch/i386/kernel/asm-offsets.c
+++ b/arch/i386/kernel/asm-offsets.c
@@ -15,6 +15,7 @@
 #include <asm/processor.h>
 #include <asm/thread_info.h>
 #include <asm/elf.h>
+#include <asm/pda.h>
 
 #define DEFINE(sym, val) \
         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -99,4 +100,5 @@ void foo(void)
 
 	BLANK();
  	OFFSET(PDA_cpu, i386_pda, cpu_number);
+	OFFSET(PDA_pcurrent, i386_pda, pcurrent);
 }
-- 
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