From owner-freebsd-hackers Mon May 29 1:48:20 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 4562A37B8B3; Mon, 29 May 2000 01:48:15 -0700 (PDT) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id e4T98jR04260; Mon, 29 May 2000 02:08:45 -0700 (PDT) Date: Mon, 29 May 2000 02:08:45 -0700 From: Alfred Perlstein To: "G.B.Naidu" Cc: freebsd-net@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: How do I time in kernel... Message-ID: <20000529020845.U28594@fw.wintelcom.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: ; from gbnaidu@sasi.com on Mon, May 29, 2000 at 01:04:45PM +0530 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * G.B.Naidu [000529 01:13] wrote: > > Hi, > > I would like to know how to get time of the day in side kernel. When I > used gettimeofday() in side kernel, it was giving panic on 3.3 FreeBSD > release. It didnt panic on 3.1-RELEASE. So what is the problem? > > Can I use gettimeofday() inside kernel? if so why 3.3 is panicking? Ifnot > why 3.1 is not panicking? > > Next question is how can I achieve the equal functionality of > gettimeofday() call in kernel? Is there anyway? > > One more question: Is it wrong to call system call from kernel files? It depends on how you call it, look at the sendfile implementation and see how it has to call writev(), userland_writev() != kernel_writev(), you need to munge with the arguements. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message