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Date:      Tue, 01 Mar 2011 12:01:48 -0800
From:      Carl <k0802647@telus.net>
To:        John Baldwin <jhb@freebsd.org>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: listing all modules compiled into a kernel instance
Message-ID:  <4D6D50AC.701@telus.net>
In-Reply-To: <201103010800.35666.jhb@freebsd.org>
References:  <4D6C78D3.5090803@telus.net> <198718A4-4A82-4FDB-A8F6-400F132A649E@gsoft.com.au> <201103010800.35666.jhb@freebsd.org>

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On 2011-03-01 3:20 AM, Maxim Khitrov wrote:
> kldstat provides information about components that were loaded
> dynamically. If your kernel was built with INCLUDE_CONFIG_FILE option
> (enabled by default in GENERIC), then you can see the static
> components using:
>
> config -x /boot/kernel/kernel

As has been shown though, "kldstat -v" actually does show static 
components, at least those declared with DRIVER_MODULE(), and "config 
-x" does not improve on the situation at all because components like 
ucom were not cited in the configuration file. IMHO, there needs to be a 
reliable way to query an existing kernel that yields a _complete_ list 
of which components are actually included.

On 2011-03-01 5:00 AM, John Baldwin wrote:
>> Maybe ucom doesn't appear because it doesn't have a DRIVER_MODULE()
>> declaration (because it isn't a driver).
>
> Yes, that would explain it.

I can explicitly include ucom in a kernel by adding "device ucom" in the 
configuration file, in which case it would call DRIVER_MODULE(), right? 
That would then make it appear in the "kldstat -v" list? So why is it a 
driver when it's done explicitly, but not a driver when done implicitly? 
That makes no sense to me since the functionality doesn't change. IMHO, 
this is a bug that needs to be fixed, not just for ucom but any 
implicitly included driver.

Who should submit a bug report?

Carl                                                   / K0802647



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