projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1965aae3 PA |
2 | #ifndef _ASM_X86_CURRENT_H |
| 3 | #define _ASM_X86_CURRENT_H | |
| f0766440 | 4 | |
| 30094208 | 5 | #include <linux/build_bug.h> |
| f0766440 | 6 | #include <linux/compiler.h> |
| f0766440 | 7 | |
| c6f5e0ac | 8 | #ifndef __ASSEMBLY__ |
| e57ef2ed TG |
9 | |
| 10 | #include <linux/cache.h> | |
| 11 | #include <asm/percpu.h> | |
| 12 | ||
| f0766440 CL |
13 | struct task_struct; |
| 14 | ||
| e57ef2ed TG |
15 | struct pcpu_hot { |
| 16 | union { | |
| 17 | struct { | |
| 18 | struct task_struct *current_task; | |
| 64701838 | 19 | int preempt_count; |
| 7443b296 | 20 | int cpu_number; |
| 5d821386 TG |
21 | #ifdef CONFIG_CALL_DEPTH_TRACKING |
| 22 | u64 call_depth; | |
| 23 | #endif | |
| c063a217 | 24 | unsigned long top_of_stack; |
| d7b6d709 | 25 | void *hardirq_stack_ptr; |
| 7fcecafe | 26 | u16 softirq_pending; |
| d7b6d709 TG |
27 | #ifdef CONFIG_X86_64 |
| 28 | bool hardirq_stack_inuse; | |
| 29 | #else | |
| 30 | void *softirq_stack_ptr; | |
| 31 | #endif | |
| e57ef2ed TG |
32 | }; |
| 33 | u8 pad[64]; | |
| 34 | }; | |
| 35 | }; | |
| 36 | static_assert(sizeof(struct pcpu_hot) == 64); | |
| 37 | ||
| 38 | DECLARE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot); | |
| f0766440 CL |
39 | |
| 40 | static __always_inline struct task_struct *get_current(void) | |
| 41 | { | |
| e57ef2ed | 42 | return this_cpu_read_stable(pcpu_hot.current_task); |
| f0766440 CL |
43 | } |
| 44 | ||
| c6f5e0ac | 45 | #define current get_current() |
| f0766440 CL |
46 | |
| 47 | #endif /* __ASSEMBLY__ */ | |
| 48 | ||
| 1965aae3 | 49 | #endif /* _ASM_X86_CURRENT_H */ |