From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sun, 19 Oct 2008 19:51:37 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Adeos-main] [PATCH] x86: Don't instrument vdso functions
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: adeos-main <adeos-main@gna.org>, Philippe Gerum <rpm@xenomai.org>

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Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>> The mcount instrumentation is currently leaking into vdso functions.
>> Patch below fixes this (bits taken from 2.6.27).
>=20
> What are these vdso functions? Functions called from user-space?

They belong to a virtual lib that is automatically mapped into every
process. They provide the same functionality like vsyscalls, but with a
different way to address them (VDSO is more flexible, vsyscalls are legac=
y).

Jan


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