Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Based on arm/arm64/include/asm/current.h
4 *
5 * Copyright (C) 2016 ARM
6 * Copyright (C) 2017 SiFive
7 */
8
9
10#ifndef __ASM_CURRENT_H
11#define __ASM_CURRENT_H
12
13#include <linux/bug.h>
14#include <linux/compiler.h>
15
16#ifndef __ASSEMBLY__
17
18struct task_struct;
19
20/*
21 * This only works because "struct thread_info" is at offset 0 from "struct
22 * task_struct". This constraint seems to be necessary on other architectures
23 * as well, but __switch_to enforces it. We can't check TASK_TI here because
24 * <asm/asm-offsets.h> includes this, and I can't get the definition of "struct
25 * task_struct" here due to some header ordering problems.
26 */
27static __always_inline struct task_struct *get_current(void)
28{
29 register struct task_struct *tp __asm__("tp");
30 return tp;
31}
32
33#define current get_current()
34
35#endif /* __ASSEMBLY__ */
36
37#endif /* __ASM_CURRENT_H */