diff options
Diffstat (limited to 'arch/x86/include/asm/current.h')
| -rw-r--r-- | arch/x86/include/asm/current.h | 24 |
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__ | ||
| 8 | struct task_struct; | 8 | struct task_struct; |
| 9 | 9 | ||
| 10 | DECLARE_PER_CPU(struct task_struct *, current_task); | 10 | DECLARE_PER_CPU(struct task_struct *, current_task); |
| 11 | static __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 | |||
| 21 | struct task_struct; | ||
| 22 | 11 | ||
| 23 | static __always_inline struct task_struct *get_current(void) | 12 | static __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 */ |
