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      1 /*	$NetBSD: kcpuset.h,v 1.11 2014/05/19 20:39:23 rmind Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008, 2011 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas and Mindaugas Rasiukevicius.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef	_SYS_KCPUSET_H_
     33 #define	_SYS_KCPUSET_H_
     34 
     35 struct kcpuset;
     36 typedef struct kcpuset	kcpuset_t;
     37 
     38 #ifdef _KERNEL
     39 
     40 #include <sys/sched.h>
     41 
     42 void		kcpuset_sysinit(void);
     43 
     44 void		kcpuset_create(kcpuset_t **, bool);
     45 void		kcpuset_clone(kcpuset_t **, const kcpuset_t *);
     46 void		kcpuset_destroy(kcpuset_t *);
     47 void		kcpuset_copy(kcpuset_t *, const kcpuset_t *);
     48 
     49 void		kcpuset_use(kcpuset_t *);
     50 void		kcpuset_unuse(kcpuset_t *, kcpuset_t **);
     51 
     52 int		kcpuset_copyin(const cpuset_t *, kcpuset_t *, size_t);
     53 int		kcpuset_copyout(kcpuset_t *, cpuset_t *, size_t);
     54 
     55 void		kcpuset_zero(kcpuset_t *);
     56 void		kcpuset_fill(kcpuset_t *);
     57 void		kcpuset_set(kcpuset_t *, cpuid_t);
     58 void		kcpuset_clear(kcpuset_t *, cpuid_t);
     59 
     60 bool		kcpuset_isset(const kcpuset_t *, cpuid_t);
     61 bool		kcpuset_isotherset(const kcpuset_t *, cpuid_t);
     62 bool		kcpuset_iszero(const kcpuset_t *);
     63 bool		kcpuset_intersecting_p(const kcpuset_t *, const kcpuset_t *);
     64 bool		kcpuset_match(const kcpuset_t *, const kcpuset_t *);
     65 void		kcpuset_intersect(kcpuset_t *, const kcpuset_t *);
     66 void		kcpuset_merge(kcpuset_t *, const kcpuset_t *);
     67 void		kcpuset_remove(kcpuset_t *, const kcpuset_t *);
     68 int		kcpuset_countset(const kcpuset_t *);
     69 
     70 cpuid_t		kcpuset_ffs(const kcpuset_t *);
     71 cpuid_t		kcpuset_ffs_intersecting(const kcpuset_t *, const kcpuset_t *);
     72 
     73 void		kcpuset_atomic_set(kcpuset_t *, cpuid_t);
     74 void		kcpuset_atomic_clear(kcpuset_t *, cpuid_t);
     75 
     76 void		kcpuset_atomicly_zero(kcpuset_t *);
     77 void		kcpuset_atomicly_intersect(kcpuset_t *, const kcpuset_t *);
     78 void		kcpuset_atomicly_merge(kcpuset_t *, const kcpuset_t *);
     79 void		kcpuset_atomicly_remove(kcpuset_t *, const kcpuset_t *);
     80 
     81 void		kcpuset_export_u32(const kcpuset_t *, uint32_t *, size_t);
     82 
     83 #endif
     84 
     85 #endif /* _SYS_KCPUSET_H_ */
     86