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