1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_VDSO_VSYSCALL_H 3 #define __ASM_VDSO_VSYSCALL_H 4 5 #ifndef __ASSEMBLY__ 6 7 #include <linux/timekeeper_internal.h> 8 #include <vdso/datapage.h> 9 10 #define VDSO_PRECISION_MASK ~(0xFF00ULL<<48) 11 12 extern struct vdso_data *vdso_data; 13 14 /* 15 * Update the vDSO data page to keep in sync with kernel timekeeping. 16 */ 17 static __always_inline __arm64_get_k_vdso_data(void)18struct vdso_data *__arm64_get_k_vdso_data(void) 19 { 20 return vdso_data; 21 } 22 #define __arch_get_k_vdso_data __arm64_get_k_vdso_data 23 24 static __always_inline __arm64_get_clock_mode(struct timekeeper * tk)25int __arm64_get_clock_mode(struct timekeeper *tk) 26 { 27 return tk->tkr_mono.clock->archdata.clock_mode; 28 } 29 #define __arch_get_clock_mode __arm64_get_clock_mode 30 31 static __always_inline __arm64_update_vsyscall(struct vdso_data * vdata,struct timekeeper * tk)32void __arm64_update_vsyscall(struct vdso_data *vdata, struct timekeeper *tk) 33 { 34 vdata[CS_HRES_COARSE].mask = VDSO_PRECISION_MASK; 35 vdata[CS_RAW].mask = VDSO_PRECISION_MASK; 36 } 37 #define __arch_update_vsyscall __arm64_update_vsyscall 38 39 /* The asm-generic header needs to be included after the definitions above */ 40 #include <asm-generic/vdso/vsyscall.h> 41 42 #endif /* !__ASSEMBLY__ */ 43 44 #endif /* __ASM_VDSO_VSYSCALL_H */ 45