linux-kernel - Re: [PATCH] trace: Add a free on close control mechanism for buffer_size

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Date:	Thu, 26 May 2011 14:23:48 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>
Subject: Re: [PATCH] trace: Add a free on close control mechanism for
 buffer_size_kb

On Thu, 2011-05-26 at 11:00 -0700, Vaibhav Nagarnaik wrote:
> On Wed, May 25, 2011 at 8:29 PM, Steven Rostedt <rostedt@...dmis.org> wrote:

> >
> > What you should do is just check if ret is less than zero here.
> >
> >        if (ret < 0)
> >                ret = -ENOMEM;
> 
> Instead, I don't have to check/set the return value. I can just return
> "ret" to the caller.

Actually, ret could be -1, if we end up with a miss match in global vs
max buffers. But that is more of an anomaly. Maybe the solution there is
to have that return -ENOMEM as well?

-- Steve


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