lsmod information detail

ufmale · 08-24-2010, 07:44 PM

I am trying to see if a module that i loaded on Redhat succeeds.

The module is from intel called vtune_drv-x32_64-2.6.18-194.el5smp.ko.
When I run the script during the installation process, it shows that it is successful.

Code:

$ lsmod | grep vtune

..
vtune_drv             267508  0
..

Is the "0" at the end of line meaning that the module is not successfully loaded?

10110111 · 08-24-2010, 07:48 PM

If you look at first line of lsmod output, you'll see this:

Code:

$ lsmod|head -n 1
Module                  Size  Used by

So, your '0' is just a reference count. It means that currently 0 processes are using your module.
You should check if you get any new messages using dmesg command to see if there are any errors loading the module.

gazolinia · 08-25-2010, 01:52 AM

Just curious to know whether the reference count for each module in /proc/modules gets added by default or by kernel module code try_get method. I guess in general the module loaded fine, else better to add few debugging statement to init method in module ...