Subject: Re: printf in drivers?
To: None <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 06/22/1999 06:59:31
On Tue, 22 Jun 1999 09:55:36 -0400 (EDT)
> I have a simple question. I'm brand new to trying to make any kernel
> source changes. I'm looking at /usr/src/sys/dev/sun/ms.c which appears to
> be the mouse driver for my sparc. I have a wheel mouse attached to the
> machine (via a PS/2 <=> SUN converter box) and I'm interested in having
> the driver print the raw data to the screen as it comes in. That way I
> can see what codes come from the mouse (if any, don't know if the
> converter box lets it through) when the mouse wheel is moved. Then I can
> figure out how to handle the wheel. Can I just use printf in a driver
> like that? Or is there a problem with printf not knowing where stdout is?
> Is there a better way of getting info like that?
You can certainly printf() in a driver like that. The kernel printf
doens't really have any notion of stdout :-) It just all goes to the
-- Jason R. Thorpe <firstname.lastname@example.org>