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Re: [PATCH] Use uname not sysctl to get the kernel revision

From: "H. Peter Anvin" <hpa at zytor dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Ulrich Drepper <drepper at redhat dot com>, Roland McGrath <roland at redhat dot com>, "Eric W. Biederman" <ebiederm at xmission dot com>, Arjan van de Ven <arjan at infradead dot org>, "Randy.Dunlap" <rdunlap at xenotime dot net>, akpm at osdl dot org, linux-kernel at vger dot kernel dot org, libc-alpha at sourceware dot org
Date: Wed, 12 Jul 2006 13:09:09 -0700
Subject: Re: [PATCH] Use uname not sysctl to get the kernel revision
References: <20060712184412.2BD57180061@magilla.sf.frob.com> <44B54EA4.5060506@redhat.com> <20060712195349.GW3823@sunsite.mff.cuni.cz>

Jakub Jelinek wrote:

On Wed, Jul 12, 2006 at 12:33:56PM -0700, Ulrich Drepper wrote:
Roland McGrath wrote:
We could also put the uname info (modulo nodename) into the vDSO.
Or even better: real topology information.
AND rather than OR would be even better.  So glibc could find kernel
version, etc. and topology in the vDSO cheaply.

Wouldn't it make more sense for this to be in ELF tags, rather than the vdso? Another alternative, I guess, would be to put a pointer in the ELF tags, which may point into the vdso.

-hpa

Follow-Ups:
- Re: [PATCH] Use uname not sysctl to get the kernel revision
  - From: Eric W. Biederman

References:
- Re: [PATCH] Use uname not sysctl to get the kernel revision
  - From: Roland McGrath
- Re: [PATCH] Use uname not sysctl to get the kernel revision
  - From: Ulrich Drepper
- Re: [PATCH] Use uname not sysctl to get the kernel revision
  - From: Jakub Jelinek

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