mirror of https://gitee.com/openkylin/linux.git
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
|
/*
|
||
|
|
* Adapted from arm64 version.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2012 ARM Limited
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* 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. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#ifndef __ASM_VDSO_DATAPAGE_H
|
||
|
|
#define __ASM_VDSO_DATAPAGE_H
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <asm/page.h>
|
||
|
|
|
||
|
|
/* Try to be cache-friendly on systems that don't implement the
|
||
|
|
* generic timer: fit the unconditionally updated fields in the first
|
||
|
|
* 32 bytes.
|
||
|
|
*/
|
||
|
|
struct vdso_data {
|
||
|
|
u32 seq_count; /* sequence count - odd during updates */
|
||
|
|
u16 tk_is_cntvct; /* fall back to syscall if false */
|
||
|
|
u16 cs_shift; /* clocksource shift */
|
||
|
|
u32 xtime_coarse_sec; /* coarse time */
|
||
|
|
u32 xtime_coarse_nsec;
|
||
|
|
|
||
|
|
u32 wtm_clock_sec; /* wall to monotonic offset */
|
||
|
|
u32 wtm_clock_nsec;
|
||
|
|
u32 xtime_clock_sec; /* CLOCK_REALTIME - seconds */
|
||
|
|
u32 cs_mult; /* clocksource multiplier */
|
||
|
|
|
||
|
|
u64 cs_cycle_last; /* last cycle value */
|
||
|
|
u64 cs_mask; /* clocksource mask */
|
||
|
|
|
||
|
|
u64 xtime_clock_snsec; /* CLOCK_REALTIME sub-ns base */
|
||
|
|
u32 tz_minuteswest; /* timezone info for gettimeofday(2) */
|
||
|
|
u32 tz_dsttime;
|
||
|
|
};
|
||
|
|
|
||
|
|
union vdso_data_store {
|
||
|
|
struct vdso_data data;
|
||
|
|
u8 page[PAGE_SIZE];
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* !__ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
#endif /* __ASM_VDSO_DATAPAGE_H */
|