X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/c0fea4742e91338fffdcf79f86a7c1d5e2b97eb1..8ad349bb6ed4a0be06e34c92be0d98b92e078db4:/bsd/dev/unix_startup.c diff --git a/bsd/dev/unix_startup.c b/bsd/dev/unix_startup.c index 018ea1583..86cfdd664 100644 --- a/bsd/dev/unix_startup.c +++ b/bsd/dev/unix_startup.c @@ -1,23 +1,31 @@ /* - * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved. + * + * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the + * License may not be used to create, or enable the creation or + * redistribution of, unlawful or unlicensed copies of an Apple operating + * system, or to circumvent, violate, or enable the circumvention or + * violation of, any terms of an Apple operating system software license + * agreement. * - * @APPLE_LICENSE_HEADER_START@ + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this + * file. * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ */ /* * Copyright (c) 1992,7 NeXT Computer, Inc. @@ -37,8 +45,6 @@ #include #include #include -#include -#include #include extern vm_map_t mb_map; @@ -49,28 +55,20 @@ extern u_long tcp_recvspace; void bsd_bufferinit(void); extern void md_prepare_for_shutdown(int, int, char *); -int bsd_mbuf_cluster_reserve(void); - /* * Declare these as initialized data so we can patch them. */ #ifdef NBUF -int max_nbuf_headers = NBUF; +int nbuf = NBUF; int niobuf = NBUF / 2; -int nbuf_hashelements = NBUF; -int nbuf = NBUF; + #else -int max_nbuf_headers = 0; +int nbuf = 0; int niobuf = 0; -int nbuf_hashelements = 0; -int nbuf = 0; -#endif -SYSCTL_INT (_kern, OID_AUTO, nbuf, CTLFLAG_RD, &nbuf, 0, ""); -SYSCTL_INT (_kern, OID_AUTO, maxnbuf, CTLFLAG_RW, &max_nbuf_headers, 0, ""); +#endif -__private_extern__ int customnbuf = 0; int srv = 0; /* Flag indicates a server boot when set */ int ncl = 0; @@ -87,30 +85,21 @@ bsd_startupearly(void) vm_size_t size; kern_return_t ret; - /* clip the number of buf headers upto 16k */ - if (max_nbuf_headers == 0) - max_nbuf_headers = atop(sane_size / 50); /* Get 2% of ram, but no more than we can map */ - if ((customnbuf == 0) && (max_nbuf_headers > 16384)) - max_nbuf_headers = 16384; - if (max_nbuf_headers < 256) - max_nbuf_headers = 256; - - /* clip the number of hash elements to 200000 */ - if ( (customnbuf == 0 ) && nbuf_hashelements == 0) { - nbuf_hashelements = atop(sane_size / 50); - if (nbuf_hashelements > 200000) - nbuf_hashelements = 200000; - } else - nbuf_hashelements = max_nbuf_headers; + if (nbuf == 0) + nbuf = atop(sane_size / 100); /* Get 1% of ram, but no more than we can map */ + if (nbuf > 8192) + nbuf = 8192; + if (nbuf < 256) + nbuf = 256; if (niobuf == 0) - niobuf = max_nbuf_headers; + niobuf = nbuf; if (niobuf > 4096) niobuf = 4096; if (niobuf < 128) niobuf = 128; - size = (max_nbuf_headers + niobuf) * sizeof(struct buf); + size = (nbuf + niobuf) * sizeof(struct buf); size = round_page(size); ret = kmem_suballoc(kernel_map, @@ -135,11 +124,13 @@ bsd_startupearly(void) buf = (struct buf *) firstaddr; bzero(buf, size); - { + if (sane_size > (64 * 1024 * 1024) || ncl) { int scale; - nmbclusters = bsd_mbuf_cluster_reserve() / MCLBYTES; - + if ((nmbclusters = ncl) == 0) { + if ((nmbclusters = ((sane_size / 16)/MCLBYTES)) > 32768) + nmbclusters = 32768; + } if ((scale = nmbclusters / NMBCLUSTERS) > 1) { tcp_sendspace *= scale; tcp_recvspace *= scale; @@ -150,17 +141,6 @@ bsd_startupearly(void) tcp_recvspace = 32 * 1024; } } - - /* - * Size vnodes based on memory - * Number vnodes is (memsize/64k) + 1024 - * This is the calculation that is used by launchd in tiger - * we are clipping the max based on 16G - * ie ((16*1024*1024*1024)/(64 *1024)) + 1024 = 263168; - */ - desiredvnodes = (sane_size/65536) + 1024; - if (desiredvnodes > 263168) - desiredvnodes = 263168; } void @@ -187,24 +167,3 @@ bsd_bufferinit(void) */ bufinit(); } - -/* - * this has been broken out into a separate routine that - * can be called from the x86 early vm initialization to - * determine how much lo memory to reserve on systems with - * DMA hardware that can't fully address all of the physical - * memory that is present. - */ -int -bsd_mbuf_cluster_reserve(void) -{ - if (sane_size > (64 * 1024 * 1024) || ncl) { - - if ((nmbclusters = ncl) == 0) { - if ((nmbclusters = ((sane_size / 16)/MCLBYTES)) > 32768) - nmbclusters = 32768; - } - } - - return (nmbclusters * MCLBYTES); -}