linux-kernel - Re: [PATCH 1/6] UML - Deal with host time going backwards

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Message-ID: <20080605194732.GB13348@c2.user-mode-linux.org>
Date:	Thu, 5 Jun 2008 15:47:32 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Nix <nix@...eri.org.uk>
Cc:	dhazelton@...er.net, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [PATCH 1/6] UML - Deal with host time going backwards

On Thu, Jun 05, 2008 at 07:14:30PM +0100, Nix wrote:
> It comes with glibc, and even ls uses it (for clock_gettime(), to
> determine what format to use for date display).
> 
> I'd say using it is about as safe as can be.

Without adding -lrt to the link line here (F7), I get

arch/um/os-Linux/built-in.o: In function `nsecs':
/home/jdike/linux/2.6/linux-2.6.22/arch/um/os-Linux/time.c:84: undefined reference to `clock_gettime'
collect2: ld returned 1 exit status

A little odd for a system call...

> Does this really only apply on top of 2.6.22? Which of the bewildering
> blizzard of time-fixup patches we've been exchanging do I need? :)

I have it on top of 2.6.26-rc2-mm1, plus all the other patches I've
sent to Andrew.  The patch which started this discussion is the one
you really need though, since this backs it out.

    	   		Jeff

-- 
Work email - jdike at linux dot intel dot com
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