5e3c6a312a
Convert ARM/ARM64 to the generic VDSO clock mode storage. This needs to happen in one go as they share the clocksource driver. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lkml.kernel.org/r/20200207124403.363235229@linutronix.de
38 lines
935 B
C
38 lines
935 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_VDSO_VSYSCALL_H
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#define __ASM_VDSO_VSYSCALL_H
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#ifndef __ASSEMBLY__
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#include <linux/timekeeper_internal.h>
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#include <vdso/datapage.h>
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#define VDSO_PRECISION_MASK ~(0xFF00ULL<<48)
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extern struct vdso_data *vdso_data;
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/*
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* Update the vDSO data page to keep in sync with kernel timekeeping.
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*/
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static __always_inline
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struct vdso_data *__arm64_get_k_vdso_data(void)
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{
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return vdso_data;
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}
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#define __arch_get_k_vdso_data __arm64_get_k_vdso_data
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static __always_inline
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void __arm64_update_vsyscall(struct vdso_data *vdata, struct timekeeper *tk)
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{
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vdata[CS_HRES_COARSE].mask = VDSO_PRECISION_MASK;
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vdata[CS_RAW].mask = VDSO_PRECISION_MASK;
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}
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#define __arch_update_vsyscall __arm64_update_vsyscall
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/* The asm-generic header needs to be included after the definitions above */
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#include <asm-generic/vdso/vsyscall.h>
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#endif /* !__ASSEMBLY__ */
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#endif /* __ASM_VDSO_VSYSCALL_H */
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