b020632e40
Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for CLOCK_REALTIME/CLOCK_MONOTONIC. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
40 lines
999 B
C
40 lines
999 B
C
#ifndef __S390_VDSO_H__
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#define __S390_VDSO_H__
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#ifdef __KERNEL__
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/* Default link addresses for the vDSOs */
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#define VDSO32_LBASE 0
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#define VDSO64_LBASE 0
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#define VDSO_VERSION_STRING LINUX_2.6.26
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#ifndef __ASSEMBLY__
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/*
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* Note about this structure:
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*
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* NEVER USE THIS IN USERSPACE CODE DIRECTLY. The layout of this
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* structure is supposed to be known only to the function in the vdso
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* itself and may change without notice.
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*/
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struct vdso_data {
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__u64 tb_update_count; /* Timebase atomicity ctr 0x00 */
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__u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
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__u64 xtime_clock_sec; /* Kernel time 0x10 */
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__u64 xtime_clock_nsec; /* 0x18 */
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__u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */
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__u64 wtom_clock_nsec; /* 0x28 */
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__u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
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__u32 tz_dsttime; /* Type of dst correction 0x34 */
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};
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extern struct vdso_data *vdso_data;
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* __S390_VDSO_H__ */
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