1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_VDSO_VSYSCALL_H
3 #define __ASM_VDSO_VSYSCALL_H
7 #include <linux/timekeeper_internal.h>
8 #include <vdso/datapage.h>
10 #define VDSO_PRECISION_MASK ~(0xFF00ULL<<48)
12 extern struct vdso_data *vdso_data;
15 * Update the vDSO data page to keep in sync with kernel timekeeping.
17 static __always_inline
18 struct vdso_data *__arm64_get_k_vdso_data(void)
22 #define __arch_get_k_vdso_data __arm64_get_k_vdso_data
24 static __always_inline
25 int __arm64_get_clock_mode(struct timekeeper *tk)
27 return tk->tkr_mono.clock->archdata.clock_mode;
29 #define __arch_get_clock_mode __arm64_get_clock_mode
31 static __always_inline
32 void __arm64_update_vsyscall(struct vdso_data *vdata, struct timekeeper *tk)
34 vdata[CS_HRES_COARSE].mask = VDSO_PRECISION_MASK;
35 vdata[CS_RAW].mask = VDSO_PRECISION_MASK;
37 #define __arch_update_vsyscall __arm64_update_vsyscall
39 /* The asm-generic header needs to be included after the definitions above */
40 #include <asm-generic/vdso/vsyscall.h>
42 #endif /* !__ASSEMBLY__ */
44 #endif /* __ASM_VDSO_VSYSCALL_H */