projects/linux·blob master · refs

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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_CURRENT_H
3#define __ASM_CURRENT_H
4
5#include <linux/compiler.h>
6
7#ifndef __ASSEMBLER__
8
9struct task_struct;
10
11/*
12 * We don't use read_sysreg() as we want the compiler to cache the value where
13 * possible.
14 */
15static __always_inline struct task_struct *get_current(void)
16{
17 unsigned long sp_el0;
18
19 asm ("mrs %0, sp_el0" : "=r" (sp_el0));
20
21 return (struct task_struct *)sp_el0;
22}
23
24#define current get_current()
25
26#endif /* __ASSEMBLER__ */
27
28#endif /* __ASM_CURRENT_H */
29