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Re: [PATCH] Make ppc64-linux use VDSO gettimeofday instead of timesyscall

From: Ulrich Drepper <drepper at redhat dot com>
To: libc-alpha at sourceware dot org
Date: Fri, 26 Mar 2010 05:02:51 -0700
Subject: Re: [PATCH] Make ppc64-linux use VDSO gettimeofday instead of timesyscall
References: <E090BE07-1DA6-4648-AB1E-0E6BA0CE98C0@linux.vnet.ibm.com> <4BAA6641.1040600@redhat.com> <OF837E4866.53385250-ON862576F1.00532EB5-862576F1.0053C8CE@us.ibm.com>

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On 03/25/2010 08:15 AM, Steve Munroe wrote:
> What is your specific concern with correctness and this approach?

If the time users, one using the syscall and one using gtod see
non-monotonic times this is a disaster.  They can be in different
processes.  Or in the kernel (file timestamps).  This has happened and I
am not sure this patch doesn't create such a situation.

- -- 
â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â
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References:
- [PATCH] Make ppc64-linux use VDSO gettimeofday instead of time syscall
  - From: Carlos Eduardo Seo
- Re: [PATCH] Make ppc64-linux use VDSO gettimeofday instead of timesyscall
  - From: Ulrich Drepper
- Re: [PATCH] Make ppc64-linux use VDSO gettimeofday instead of time syscall
  - From: Steve Munroe

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