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 <[email protected]>
Cc: Chuck Ebbert <[email protected]>
Cc: Zachary Amsden <[email protected]>
Cc: Jan Beulich <[email protected]>
Cc: Andi Kleen <[email protected]>
---
include/asm-i386/current.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff -r 3752f3a5974a include/asm-i386/current.h
--- a/include/asm-i386/current.h Mon Sep 25 01:48:09 2006 -0700
+++ b/include/asm-i386/current.h Mon Sep 25 01:48:09 2006 -0700
@@ -1,13 +1,14 @@
#ifndef _I386_CURRENT_H
#define _I386_CURRENT_H
-#include <linux/thread_info.h>
+#include <asm/pda.h>
+#include <linux/compiler.h>
struct task_struct;
-static __always_inline struct task_struct * get_current(void)
+static __always_inline struct task_struct *get_current(void)
{
- return current_thread_info()->task;
+ return read_pda(pcurrent);
}
#define current get_current()
--
-
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