/* * Based on arm/arm64/include/asm/current.h * * Copyright (C) 2016 ARM * Copyright (C) 2017 SiFive * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #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 */