current.h

 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