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      1 /*	$NetBSD: percpu.h,v 1.5 2020/02/07 11:55:22 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2007,2008 YAMAMOTO Takashi,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _SYS_PERCPU_H_
     30 #define	_SYS_PERCPU_H_
     31 
     32 #include <sys/percpu_types.h>
     33 
     34 void	percpu_init(void);
     35 void	percpu_init_cpu(struct cpu_info *);
     36 percpu_t *percpu_alloc(size_t);
     37 void	percpu_free(percpu_t *, size_t);
     38 void	*percpu_getref(percpu_t *);
     39 void	percpu_putref(percpu_t *);
     40 
     41 typedef void (*percpu_callback_t)(void *, void *, struct cpu_info *);
     42 void	percpu_foreach(percpu_t *, percpu_callback_t, void *);
     43 void	percpu_foreach_xcall(percpu_t *, u_int, percpu_callback_t, void *);
     44 
     45 percpu_t *percpu_create(size_t, percpu_callback_t, percpu_callback_t, void *);
     46 
     47 /* low-level api; don't use unless necessary */
     48 void	percpu_traverse_enter(void);
     49 void	percpu_traverse_exit(void);
     50 void	*percpu_getptr_remote(percpu_t *, struct cpu_info *);
     51 
     52 #endif /* _SYS_PERCPU_H_ */
     53