On Tue, Mar 01, 2011 at 12:01:48PM -0800, Carl thus spake:
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?
There was a documentation bug that was put in regarding the ucom device, and
it was to update the device name in the documentation.
http://www.freebsd.org/cgi/query-pr.cgi?pr=155074
I don't know if a PR is still required, but this may be worth a look first.
Carl / K0802647
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Jason Helfman
System Administrator
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