| Christoph Lameter | f076644 | 2008-05-09 19:09:48 -0700 | [diff] [blame] | 1 | #ifndef _X86_CURRENT_H |
| 2 | #define _X86_CURRENT_H |
| 3 | |
| Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 4 | #ifdef CONFIG_X86_32 |
| Christoph Lameter | f076644 | 2008-05-09 19:09:48 -0700 | [diff] [blame] | 5 | #include <linux/compiler.h> |
| 6 | #include <asm/percpu.h> |
| 7 | |
| 8 | struct task_struct; |
| 9 | |
| 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 | |
| 23 | static __always_inline struct task_struct *get_current(void) |
| 24 | { |
| 25 | return read_pda(pcurrent); |
| 26 | } |
| 27 | |
| 28 | #else /* __ASSEMBLY__ */ |
| 29 | |
| 30 | #include <asm/asm-offsets.h> |
| 31 | #define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg |
| 32 | |
| 33 | #endif /* __ASSEMBLY__ */ |
| 34 | |
| 35 | #endif /* X86_32 */ |
| 36 | |
| 37 | #define current get_current() |
| 38 | |
| 39 | #endif /* X86_CURRENT_H */ |