linux-kernel - Re: [PATCH 1/2] tracing/kprobes: move free_trace_probe into unregister_trace

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Message-ID: <1372167081.18733.194.camel@gandalf.local.home>
Date:	Tue, 25 Jun 2013 09:31:21 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"yrl.pp-manager.tt@...achi.com" <yrl.pp-manager.tt@...achi.com>
Subject: Re: [PATCH 1/2] tracing/kprobes: move free_trace_probe into
 unregister_trace_probe

On Tue, 2013-06-25 at 19:10 +0900, Masami Hiramatsu wrote:
> (2013/06/25 17:15), zhangwei(Jovi) wrote:
> > There have no good reason to call free_trace_probe
> > every time when unregister_trace_probe return 0.
> > 
> > Move free_trace_probe into unregister_trace_probe,
> > make code simpler.
> 
> Sorry, nack. For the symmetrical coding reason, I don't like
> involving "free" and "alloc" into "unregister"/"register"
> functions. I think those should be just another actions.

I totally agree with Masami here. Please do not add "side effects" to
the unregister function.

Thanks,

-- Steve

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