2 * Copyright 2012 Tilera Corporation. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
15 #ifndef __TILE_VDSO_H__
16 #define __TILE_VDSO_H__
18 #include <linux/seqlock.h>
19 #include <linux/types.h>
22 * Note about the vdso_data structure:
24 * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
25 * structure is supposed to be known only to the function in the vdso
26 * itself and may change without notice.
30 seqcount_t tz_seq; /* Timezone seqlock */
31 seqcount_t tb_seq; /* Timebase seqlock */
32 __u64 xtime_tod_stamp; /* TOD clock for xtime */
33 __u64 xtime_clock_sec; /* Kernel time second */
34 __u64 xtime_clock_nsec; /* Kernel time nanosecond */
35 __u64 wtom_clock_sec; /* Wall to monotonic clock second */
36 __u64 wtom_clock_nsec; /* Wall to monotonic clock nanosecond */
37 __u32 mult; /* Cycle to nanosecond multiplier */
38 __u32 shift; /* Cycle to nanosecond divisor (power of two) */
39 __u32 tz_minuteswest; /* Minutes west of Greenwich */
40 __u32 tz_dsttime; /* Type of dst correction */
43 extern struct vdso_data *vdso_data;
45 /* __vdso_rt_sigreturn is defined with the addresses in the vdso page. */
46 extern void __vdso_rt_sigreturn(void);
48 extern int setup_vdso_pages(void);
50 #endif /* __TILE_VDSO_H__ */