Date: Mon, 9 Nov 1998 04:22:11 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: grog@lemis.com (Greg Lehey) Cc: tlambert@primenet.com, Reinier.Bezuidenhout@KryptoKom.DE, freebsd-hackers@FreeBSD.ORG Subject: Re: Malloc in the kernel Message-ID: <199811090422.VAA12381@usr07.primenet.com> In-Reply-To: <19981105134634.N784@freebie.lemis.com> from "Greg Lehey" at Nov 5, 98 01:46:34 pm
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> >> If I want to malloc really large space in the kernel, say from > >> 2k up to 1M or maybe more .... wat parameter should 'n > >> give to malloc ?? [ ... ] > > It depends on what you intend to use the memory for. > > > > Ideally, you would be prepared to take a page fault, and would > > allocate pageable memory backed by swap so that you didn't > > exhaust the physical memory in the system. > > > > In general, the kernel is better at deciding what memory it needs > > when it needs it than a kernel code author. You either trust > > the locality of reference model upon which VM systems are based, > > or you don't. > > Assuming that fits his needs, what's the answer? vm_pager_allocate(OBJT_SWAP, 0, OFF_TO_IDX(size), VM_PROT_DEFAULT, 0); Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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