| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Based on arm/arm64/include/asm/current.h |
| * |
| * Copyright (C) 2016 ARM |
| * Copyright (C) 2017 SiFive |
| */ |
| |
| |
| #ifndef __ASM_CURRENT_H |
| #define __ASM_CURRENT_H |
| |
| #include <linux/bug.h> |
| #include <linux/compiler.h> |
| |
| #ifndef __ASSEMBLY__ |
| |
| struct task_struct; |
| |
| /* |
| * This only works because "struct thread_info" is at offset 0 from "struct |
| * task_struct". This constraint seems to be necessary on other architectures |
| * as well, but __switch_to enforces it. We can't check TASK_TI here because |
| * <asm/asm-offsets.h> includes this, and I can't get the definition of "struct |
| * task_struct" here due to some header ordering problems. |
| */ |
| static __always_inline struct task_struct *get_current(void) |
| { |
| register struct task_struct *tp __asm__("tp"); |
| return tp; |
| } |
| |
| #define current get_current() |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif /* __ASM_CURRENT_H */ |