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Date: Tue, 29 Jan 2013 23:16:00 +0100
From: Marius Strobl <marius@alchemy.franken.de>
To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Fast gettimeofday(2) and static linking
Message-ID: <20130129221600.GG85306@alchemy.franken.de>
References: <20130125123554.GQ2522@kib.kiev.ua>
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On Mon, Jan 28, 2013 at 05:55:24PM +0200, Konstantin Belousov wrote:
> On Mon, Jan 28, 2013 at 04:45:17PM +0100, Marius Strobl wrote:
> > On Fri, Jan 25, 2013 at 02:35:54PM +0200, Konstantin Belousov wrote:
> > > Bruce Evans reported that statically linked binaries on HEAD an stable/9
> > > use the syscall for gettimeofday(2) and clock_gettime(2). Apparently, this
> > > is due to my use of the weak reference to the __vdso* symbols in the
> > > libc implementations.
> > > 
> > > Patch below reworks the __vdso* attributes to only make the symbols
> > > weak, but keep the references strong. Since I have to add a stub for
> > > each architecture, I would like to ask non-x86 machines owners to test
> > > the patch.
> > > 
> > 
> > Hi Konstantin,
> > 
> > what's the appropriate way to test this?
> 
> Please rebuild the world with the patch and check that gettimeofday(2) still
> works on your architecture, both for the static and dynamic binaries.
> I think that just booting multiuser is enough.

Okay, looks good on sparc64 (tested with a dynamically as well as a
statically built time(1)).

Marius