6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* $NetBSD: pcu.h,v 1.9 2012/04/18 13:42:11 yamt Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Mindaugas Rasiukevicius.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_PCU_H_
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#define _SYS_PCU_H_
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#if !defined(_KERNEL) && !defined(_KMEMUSER)
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#error "not supposed to be exposed to userland"
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#endif
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#ifndef _KERNEL
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#include <stdbool.h>
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#endif
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/*
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* Default: no PCU for MD.
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*/
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#ifndef PCU_UNIT_COUNT
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#define PCU_UNIT_COUNT 0
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#endif
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#if PCU_UNIT_COUNT > 0
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/*
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* pcu_state_save(lwp)
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* save the current CPU's state into the given LWP's MD storage.
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*
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* pcu_state_load(lwp, used)
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* load PCU state from the given LWP's MD storage to the current CPU.
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* the 'used' argument is true if it isn't the first time the LWP uses
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* the PCU.
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*
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* pcu_state_release(lwp)
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* tell MD code detect the next use of the PCU on the LWP, and call
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* pcu_load().
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*/
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typedef struct {
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u_int pcu_id;
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void (*pcu_state_save)(lwp_t *);
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void (*pcu_state_load)(lwp_t *, bool);
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void (*pcu_state_release)(lwp_t *);
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} pcu_ops_t;
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void pcu_switchpoint(lwp_t *);
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void pcu_discard_all(lwp_t *);
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void pcu_save_all(lwp_t *);
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void pcu_load(const pcu_ops_t *);
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void pcu_save(const pcu_ops_t *);
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void pcu_discard(const pcu_ops_t *);
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bool pcu_used_p(const pcu_ops_t *);
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#else
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#define pcu_switchpoint(l)
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#define pcu_discard_all(l)
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#define pcu_save_all(l)
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#endif
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#endif
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