3.2.21. /proc/modules

3.2.21. /proc/modules

This file displays a list of all modules loaded into the kernel. Its contents vary based on the configuration and use of your system, but it should be organized in a similar manner to this sample /proc/modules file output:


This example has been reformatted into a readable format. Most of this information can also be viewed via the /sbin/lsmod command.

nfs      170109  0 -          Live 0x129b0000 
lockd    51593   1 nfs,       Live 0x128b0000 
nls_utf8 1729    0 -          Live 0x12830000 
vfat     12097   0 -          Live 0x12823000 
fat      38881   1 vfat,      Live 0x1287b000 
autofs4  20293   2 -          Live 0x1284f000 
sunrpc   140453  3 nfs,lockd, Live 0x12954000 
3c59x    33257   0 -          Live 0x12871000 
uhci_hcd 28377   0 -          Live 0x12869000 
md5      3777    1 -          Live 0x1282c000 
ipv6     211845 16 -          Live 0x128de000 
ext3     92585   2 -          Live 0x12886000 
jbd      65625   1 ext3,      Live 0x12857000 
dm_mod   46677   3 -          Live 0x12833000

The first column contains the name of the module.

The second column refers to the memory size of the module, in bytes.

The third column lists how many instances of the module are currently loaded. A value of zero represents an unloaded module.

The fourth column states if the module depends upon another module to be present in order to function, and lists those other modules.

The fifth column lists what load state the module is in: Live, Loading, or Unloading are the only possible values.

The sixth column lists the current kernel memory offset for the loaded module. This information can be useful for debugging purposes, or for profiling tools such as oprofile.

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