linux-kernel - Re: [PATCH tracing/kprobes v3 4/7] tracing/kprobes: Avoid field name confliction

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Date:	Mon, 12 Oct 2009 15:13:51 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Hellwig <hch@...radead.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	"Frank Ch. Eigler" <fche@...hat.com>
Subject: Re: [PATCH tracing/kprobes v3 4/7] tracing/kprobes: Avoid field	name
 confliction

Frederic Weisbecker wrote:
> The conflict issue might not be obvious for a user desperately trying to set
> a kprobe. Even for other failcases, it might not be obvious (blacklisted
> symbols, syntax errors...)
>
> May be should you improve the error granularity and print a KERN_DEBUG
> message?

Agreed, and kprobes error handling should be improved too (in the most cases,
it just returns -EINVAL).

Thank you.

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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