linux-kernel - Re: [linux-usb-devel] [PATCH] usbmon: add binary interface

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Message-Id: <200610121017.52655.duncan.sands@math.u-psud.fr>
Date:	Thu, 12 Oct 2006 10:17:52 +0200
From:	Duncan Sands <duncan.sands@...h.u-psud.fr>
To:	linux-usb-devel@...ts.sourceforge.net
Cc:	Pete Zaitcev <zaitcev@...hat.com>, Pavel Machek <pavel@...e.cz>,
	gregkh@...e.de, Paolo Abeni <paolo.abeni@...il.it>,
	linux-kernel@...r.kernel.org
Subject: Re: [linux-usb-devel] [PATCH] usbmon: add binary interface

On Wednesday 11 October 2006 22:43, Pete Zaitcev wrote:
> On Wed, 11 Oct 2006 19:44:43 +0000, Pavel Machek <pavel@...e.cz> wrote:
> 
> > Does it mean text interface is now deprecated? Or perhaps ioctl should
> > be added to text interface too? Or maybe we do not need binary
> > interface if we allow resizing on text interface?
> 
> I haven't reviewed Paolo's patch yet, but with that in mind:
>  - No, text is not deprecated yet. That is only possible when a simplified
>    command-line tool is written and distributed (e.g. usbmon(8)).
>  - No, I do not think an ioctl in debugfs or a text API is a good idea.
>  - Resizing on text interface magnifies sprintf contribution to CPU burn,
>    so once we have the binary one, there's only disadvantage and
>    no advantage in implementing that.

By the way, any reason why CONFIG_USB_MON doesn't select CONFIG_DEBUG_FS?
Is usbmon useful without debugfs?

Ciao,

Duncan.
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