2 * Copyright (c) 2010 by The DragonFly Project and Samuel J. Greear.
5 * This code is derived from software contributed to The DragonFly Project
6 * by Samuel J. Greear <sjg@thesjg.com>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/types.h>
37 #include <sys/kernel.h>
38 #include <sys/objcache.h>
39 #include <sys/systm.h>
42 #include <vm/vm_extern.h>
43 #include <vm/vm_kern.h>
44 #include <vm/vm_page.h>
45 #include <cpu/lwbuf.h>
46 #include <machine/param.h>
48 static void lwbuf_init(void *);
49 SYSINIT(sock_lwb, SI_BOOT2_MACHDEP, SI_ORDER_ANY, lwbuf_init, NULL);
51 static struct objcache *lwbuf_cache;
53 MALLOC_DEFINE(M_LWBUF, "lwbuf", "Lightweight buffers");
54 struct objcache_malloc_args lwbuf_malloc_args = { sizeof(struct lwbuf), M_LWBUF };
58 lwbuf_cache_ctor(void *obj, void *pdata, int ocflags)
60 struct lwbuf *lwb = (struct lwbuf *)obj;
71 lwbuf_cache = objcache_create("lwbuf", 0, 0,
72 lwbuf_cache_ctor, NULL, NULL,
73 objcache_malloc_alloc, objcache_malloc_free,
78 lwbuf_alloc(vm_page_t m)
82 if ((lwb = objcache_get(lwbuf_cache, M_WAITOK)) == NULL)
86 lwb->kva = PHYS_TO_DMAP(VM_PAGE_TO_PHYS(lwb->m));
92 lwbuf_free(struct lwbuf *lwb)
96 objcache_put(lwbuf_cache, lwb);