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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* Copyright 2012 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef __TILE_VDSO_H__
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#define __TILE_VDSO_H__
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#include <linux/seqlock.h>
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#include <linux/types.h>
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/*
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* Note about the vdso_data structure:
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*
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* NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
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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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seqcount_t tz_seq; /* Timezone seqlock */
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seqcount_t tb_seq; /* Timebase seqlock */
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__u64 cycle_last; /* TOD clock for xtime */
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__u64 mask; /* Cycle mask */
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__u32 mult; /* Cycle to nanosecond multiplier */
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__u32 shift; /* Cycle to nanosecond divisor (power of two) */
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__u64 wall_time_sec;
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__u64 wall_time_snsec;
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__u64 monotonic_time_sec;
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__u64 monotonic_time_snsec;
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__u64 wall_time_coarse_sec;
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__u64 wall_time_coarse_nsec;
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__u64 monotonic_time_coarse_sec;
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__u64 monotonic_time_coarse_nsec;
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__u32 tz_minuteswest; /* Minutes west of Greenwich */
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__u32 tz_dsttime; /* Type of dst correction */
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};
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extern struct vdso_data *vdso_data;
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/* __vdso_rt_sigreturn is defined with the addresses in the vdso page. */
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extern void __vdso_rt_sigreturn(void);
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extern int setup_vdso_pages(void);
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#endif /* __TILE_VDSO_H__ */
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