linux-kernel - Re: [RFC][PATCH 0/2] Syscalls tracing

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Date:	Sat, 07 Mar 2009 13:15:18 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Jiaying Zhang <jiayingz@...gle.com>,
	Martin Bligh <mbligh@...gle.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [RFC][PATCH 0/2] Syscalls tracing

On Sat, 2009-03-07 at 05:52 +0100, Frederic Weisbecker wrote:
> Here is a first attempt, quick one-shot, to provide a syscall tracing
> infrastructure on ftrace.
> 
> The RFC prefix is here to reflect its ugliness on various parts.
> The compromise between tracing reliabilty and speed is hard to balance.
> For example I guess the basic and horrid string mask should be dropped in favour
> of something else, which takes care of the volatile strings from the userspace.
> 
> But I hope a lot of ideas to make it better will come along this discussion.

Can't you abuse the SYSCALL_DEFINE macros? This current approach looks
like it will replicate the syscall table.



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