| /* |
| * 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__ */ |
