vsyscall.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_VDSO_VSYSCALL_H
 3#define __ASM_VDSO_VSYSCALL_H
 4
 5#ifndef __ASSEMBLER__
 6
 7#include <vdso/datapage.h>
 8
 9#define VDSO_PRECISION_MASK	~(0xFF00ULL<<48)
10
11
12/*
13 * Update the vDSO data page to keep in sync with kernel timekeeping.
14 */
15static __always_inline
16void __arch_update_vdso_clock(struct vdso_clock *vc)
17{
18	vc->mask	= VDSO_PRECISION_MASK;
19}
20#define __arch_update_vdso_clock __arch_update_vdso_clock
21
22/* The asm-generic header needs to be included after the definitions above */
23#include <asm-generic/vdso/vsyscall.h>
24
25#endif /* !__ASSEMBLER__ */
26
27#endif /* __ASM_VDSO_VSYSCALL_H */