c4e20cad00
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright 2012 Konstantin Belousov <kib@FreeBSD.ORG>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_VDSO_H
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#define _SYS_VDSO_H
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#include <sys/types.h>
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#include <machine/vdso.h>
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struct vdso_timehands {
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uint32_t th_algo;
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uint32_t th_gen;
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uint64_t th_scale;
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uint32_t th_offset_count;
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uint32_t th_counter_mask;
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struct bintime th_offset;
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struct bintime th_boottime;
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VDSO_TIMEHANDS_MD
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};
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struct vdso_timekeep {
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uint32_t tk_ver;
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uint32_t tk_enabled;
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uint32_t tk_current;
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struct vdso_timehands tk_th[];
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};
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#define VDSO_TK_CURRENT_BUSY 0xffffffff
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#define VDSO_TK_VER_1 0x1
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#define VDSO_TK_VER_CURR VDSO_TK_VER_1
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#define VDSO_TH_ALGO_1 0x1
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#define VDSO_TH_ALGO_2 0x2
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#define VDSO_TH_ALGO_3 0x3
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#define VDSO_TH_ALGO_4 0x4
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#ifndef _KERNEL
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struct timespec;
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struct timeval;
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struct timezone;
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int __vdso_clock_gettime(clockid_t clock_id, struct timespec *ts);
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int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
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int __vdso_gettc(const struct vdso_timehands *vdso_th, u_int *tc);
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int __vdso_gettimekeep(struct vdso_timekeep **tk);
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#endif
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#ifdef _KERNEL
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struct timecounter;
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struct vdso_sv_tk {
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int sv_timekeep_off;
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int sv_timekeep_curr;
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uint32_t sv_timekeep_gen;
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};
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void timekeep_push_vdso(void);
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uint32_t tc_fill_vdso_timehands(struct vdso_timehands *vdso_th);
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/*
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* The cpu_fill_vdso_timehands() function should fill MD-part of the
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* struct vdso_timehands, which is both machine- and
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* timecounter-depended. The return value should be 1 if fast
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* userspace timecounter is enabled by hardware, and 0 otherwise. The
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* global sysctl enable override is handled by machine-independed code
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* after cpu_fill_vdso_timehands() call is made.
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*/
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uint32_t cpu_fill_vdso_timehands(struct vdso_timehands *vdso_th,
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struct timecounter *tc);
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struct vdso_sv_tk *alloc_sv_tk(void);
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#define VDSO_TH_NUM 4
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#ifdef COMPAT_FREEBSD32
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struct bintime32 {
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uint32_t sec;
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uint32_t frac[2];
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};
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struct vdso_timehands32 {
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uint32_t th_algo;
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uint32_t th_gen;
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uint32_t th_scale[2];
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uint32_t th_offset_count;
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uint32_t th_counter_mask;
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struct bintime32 th_offset;
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struct bintime32 th_boottime;
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VDSO_TIMEHANDS_MD32
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};
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struct vdso_timekeep32 {
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uint32_t tk_ver;
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uint32_t tk_enabled;
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uint32_t tk_current;
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struct vdso_timehands32 tk_th[];
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};
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uint32_t tc_fill_vdso_timehands32(struct vdso_timehands32 *vdso_th32);
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uint32_t cpu_fill_vdso_timehands32(struct vdso_timehands32 *vdso_th32,
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struct timecounter *tc);
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struct vdso_sv_tk *alloc_sv_tk_compat32(void);
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#endif
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#endif
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#endif
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