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Date: Tue, 24 May 2011 18:25:28 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call
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Cc: linux-mips@linux-mips.org, linux-sh@vger.kernel.org,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Oleg Nesterov <oleg@redhat.com>, David Howells <dhowells@redhat.com>,
	Paul Mackerras <paulus@samba.org>,
	Eric Paris <eparis@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	sparclinux@vger.kernel.org, Jiri Slaby <jslaby@suse.cz>,
	linux-s390@vger.kernel.org,
	Russell King <linux@arm.linux.org.uk>, x86@kernel.org,
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	Linus Torvalds <torvalds@linux-foundation.org>,
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	Martin Schwidefsky <schwidefsky@de.ibm.com>, kees.cook@canonical.com,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	Michal Marek <mmarek@suse.cz>, Michal Simek <monstr@monstr.eu>,
	Will Drewry <wad@chromium.org>, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org, Ralf Baechle <ralf@linux-mips.org>,
	Paul Mundt <lethal@linux-sh.org>, Tejun Heo <tj@kernel.org>,
	linux390@de.ibm.com, Andrew Morton <akpm@linux-foundation.org>,
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On Tue, 24 May 2011, Peter Zijlstra wrote:

> On Tue, 2011-05-24 at 10:59 -0500, Will Drewry wrote:
> >  include/linux/ftrace_event.h  |    4 +-
> >  include/linux/perf_event.h    |   10 +++++---
> >  kernel/perf_event.c           |   49 +++++++++++++++++++++++++++++++++++++---
> >  kernel/seccomp.c              |    8 ++++++
> >  kernel/trace/trace_syscalls.c |   27 +++++++++++++++++-----
> >  5 files changed, 82 insertions(+), 16 deletions(-) 
> 
> I strongly oppose to the perf core being mixed with any sekurity voodoo
> (or any other active role for that matter).

Amen. We have enough crap to cleanup in perf/ftrace already, so we
really do not need security magic added to it.

Thanks,

	tglx