Date: Mon, 29 May 2000 02:08:45 -0700 From: Alfred Perlstein <bright@wintelcom.net> To: "G.B.Naidu" <gbnaidu@sasi.com> Cc: freebsd-net@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: How do I time in kernel... Message-ID: <20000529020845.U28594@fw.wintelcom.net> In-Reply-To: <Pine.LNX.4.21.0005291300270.775-100000@pcd75.sasi.com>; from gbnaidu@sasi.com on Mon, May 29, 2000 at 01:04:45PM %2B0530 References: <Pine.LNX.4.21.0005291300270.775-100000@pcd75.sasi.com>
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* G.B.Naidu <gbnaidu@sasi.com> [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
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