Current Path : /sys/mips/mips/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/mips/mips/uma_machdep.c |
/*- * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/mips/mips/uma_machdep.c 216315 2010-12-09 06:34:28Z jchandra $"); #include <sys/param.h> #include <sys/lock.h> #include <sys/mutex.h> #include <sys/systm.h> #include <vm/vm.h> #include <vm/vm_page.h> #include <vm/vm_pageout.h> #include <vm/uma.h> #include <vm/uma_int.h> #include <machine/md_var.h> #include <machine/vmparam.h> void * uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait) { static vm_pindex_t color; vm_paddr_t pa; vm_page_t m; int pflags; void *va; *flags = UMA_SLAB_PRIV; if ((wait & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT) pflags = VM_ALLOC_INTERRUPT; else pflags = VM_ALLOC_SYSTEM; for (;;) { m = pmap_alloc_direct_page(color++, pflags); if (m == NULL) { if (wait & M_NOWAIT) return (NULL); else pmap_grow_direct_page_cache(); } else break; } pa = VM_PAGE_TO_PHYS(m); va = (void *)MIPS_PHYS_TO_DIRECT(pa); if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0) bzero(va, PAGE_SIZE); return (va); } void uma_small_free(void *mem, int size, u_int8_t flags) { vm_page_t m; vm_paddr_t pa; pa = MIPS_DIRECT_TO_PHYS((vm_offset_t)mem); m = PHYS_TO_VM_PAGE(pa); m->wire_count--; vm_page_free(m); atomic_subtract_int(&cnt.v_wire_count, 1); }