The information displayed by lsmod is identical to that available from:

A.
/proc/modules.

B.
/proc/depmod.

C.
/proc/ls.

D.
/proc/lsmod.

Explanation:
Lsmod shows information about all loaded modules. The format is name, size, use count, list of referring modules. The information displayed is identical to that
available from /proc/modules.
cat /proc/modules
Module Size Used by
i915 81349 2
md5 4033 1
ipv6 232705 10
parport_pc 24705 1
lp 12077 0
parport 37129 2 parport_pc,lp
autofs4 23237 0
sunrpc 157093 1
dm_mod 54741 2
button 6481 0
battery 8901 0
ac 4805 0

raid1 19905 1
uhci_hcd 31065 0
ehci_hcd 30917 0
snd_intel8x0 33769 0
snd_ac97_codec 63889 1 snd_intel8x0
snd_pcm_oss 49017 0
snd_mixer_oss 17985 1 snd_pcm_oss
snd_pcm 96841 2 snd_intel8x0,snd_pcm_oss
snd_timer 29893 1 snd_pcm
snd_page_alloc 9673 2 snd_intel8x0,snd_pcm
snd_mpu401_uart 8769 1 snd_intel8x0
snd_rawmidi 26597 1 snd_mpu401_uart
snd_seq_device 8137 1 snd_rawmidi
snd 54949 9
snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_u art,snd_rawmidi,snd_seq
soundcore 9889 1 snd
8139too 25921 0
mii 4673 1 8139too
floppy 58481 0
ext3 116809 6
jbd 71257 1 ext3