45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
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/* 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/hrtimer.h>
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#include <linux/timekeeper_internal.h>
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#include <vdso/datapage.h>
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#include <asm/vgtod.h>
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#include <asm/vvar.h>
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int vclocks_used __read_mostly;
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DEFINE_VVAR(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 *__x86_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 __x86_get_k_vdso_data
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static __always_inline
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int __x86_get_clock_mode(struct timekeeper *tk)
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{
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int vclock_mode = tk->tkr_mono.clock->archdata.vclock_mode;
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/* Mark the new vclock used. */
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BUILD_BUG_ON(VCLOCK_MAX >= 32);
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WRITE_ONCE(vclocks_used, READ_ONCE(vclocks_used) | (1 << vclock_mode));
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return vclock_mode;
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}
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#define __arch_get_clock_mode __x86_get_clock_mode
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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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