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