[mirror_ubuntu-focal-kernel.git] / arch / arm64 / include / asm / current.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CURRENT_H
#define __ASM_CURRENT_H

#include <linux/compiler.h>

#ifndef __ASSEMBLY__

struct task_struct;

/*
 * We don't use read_sysreg() as we want the compiler to cache the value where
 * possible.
 */
static __always_inline struct task_struct *get_current(void)
{
	unsigned long sp_el0;

	asm ("mrs %0, sp_el0" : "=r" (sp_el0));

	return (struct task_struct *)sp_el0;
}

#define current get_current()

#endif /* __ASSEMBLY__ */

#endif /* __ASM_CURRENT_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
c02433dd MR	2	#ifndef __ASM_CURRENT_H
	3	#define __ASM_CURRENT_H
	4
	5	#include <linux/compiler.h>
	6
c02433dd MR	7	#ifndef __ASSEMBLY__
	8
	9	struct task_struct;
	10
9d84fb27 MR	11	/*
	12	* We don't use read_sysreg() as we want the compiler to cache the value where
	13	* possible.
	14	*/
c02433dd MR	15	static __always_inline struct task_struct *get_current(void)
c02433dd MR	16	{
9d84fb27 MR	17	unsigned long sp_el0;
	18
	19	asm ("mrs %0, sp_el0" : "=r" (sp_el0));
	20
	21	return (struct task_struct *)sp_el0;
c02433dd MR	22	}
	23
	24	#define current get_current()
	25
	26	#endif /* __ASSEMBLY__ */
	27
	28	#endif /* __ASM_CURRENT_H */
	29