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

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