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authorIngo Molnar <mingo@elte.hu>2009-03-08 11:48:51 -0400
committerIngo Molnar <mingo@elte.hu>2009-03-08 11:48:51 -0400
commitdba58e39ced7af63f2748d12bbb2b4ac83c72391 (patch)
treeee15a5e7667b51d0d0f7e8cb39064652f7c84c28 /arch/x86/include/asm/current.h
parent9de36825b321fe9fe9cf73260554251af579f4ca (diff)
parent78ff7fae04554b49d29226ed12536268c2500d1f (diff)
Merge branches 'tracing/doc', 'tracing/ftrace', 'tracing/printk' and 'tracing/textedit' into tracing/core
Diffstat (limited to 'arch/x86/include/asm/current.h')
-rw-r--r--arch/x86/include/asm/current.h24
1 files changed, 3 insertions, 21 deletions
diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h
index 0930b4f8d672..c68c361697e1 100644
--- a/arch/x86/include/asm/current.h
+++ b/arch/x86/include/asm/current.h
@@ -1,39 +1,21 @@
1#ifndef _ASM_X86_CURRENT_H 1#ifndef _ASM_X86_CURRENT_H
2#define _ASM_X86_CURRENT_H 2#define _ASM_X86_CURRENT_H
3 3
4#ifdef CONFIG_X86_32
5#include <linux/compiler.h> 4#include <linux/compiler.h>
6#include <asm/percpu.h> 5#include <asm/percpu.h>
7 6
7#ifndef __ASSEMBLY__
8struct task_struct; 8struct task_struct;
9 9
10DECLARE_PER_CPU(struct task_struct *, current_task); 10DECLARE_PER_CPU(struct task_struct *, current_task);
11static __always_inline struct task_struct *get_current(void)
12{
13 return x86_read_percpu(current_task);
14}
15
16#else /* X86_32 */
17
18#ifndef __ASSEMBLY__
19#include <asm/pda.h>
20
21struct task_struct;
22 11
23static __always_inline struct task_struct *get_current(void) 12static __always_inline struct task_struct *get_current(void)
24{ 13{
25 return read_pda(pcurrent); 14 return percpu_read(current_task);
26} 15}
27 16
28#else /* __ASSEMBLY__ */ 17#define current get_current()
29
30#include <asm/asm-offsets.h>
31#define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg
32 18
33#endif /* __ASSEMBLY__ */ 19#endif /* __ASSEMBLY__ */
34 20
35#endif /* X86_32 */
36
37#define current get_current()
38
39#endif /* _ASM_X86_CURRENT_H */ 21#endif /* _ASM_X86_CURRENT_H */