Linux / Include
File Size

The distribution of size of files (measured in lines of code).

Intro
  • File size measurements show the distribution of size of files.
  • Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
  • It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
File Size Overall
  • There are 5,652 files with 698,731 lines of code.
    • 77 very long files (137,042 lines of code)
    • 164 long files (113,870 lines of code)
    • 615 medium size files (189,819 lines of codeclsfd_ftr_w_mp_ins)
    • 842 small files (119,205 lines of code)
    • 3,954 very small files (138,795 lines of code)
19% | 16% | 27% | 17% | 19%
Legend:
1001+
501-1000
201-500
101-200
1-100


explore: zoomable circles | sunburst | 3D view
File Size per Extension
1001+
501-1000
201-500
101-200
1-100
h19% | 16% | 27% | 17% | 19%
File Size per Logical Decomposition
primary
1001+
501-1000
201-500
101-200
1-100
linux23% | 15% | 27% | 15% | 18%
net32% | 13% | 26% | 15% | 13%
uapi13% | 21% | 22% | 17% | 24%
trace35% | 8% | 28% | 14% | 12%
dt-bindings8% | 13% | 31% | 23% | 22%
rdma33% | 14% | 25% | 13% | 12%
video29% | 16% | 30% | 16% | 8%
acpi32% | 22% | 28% | 7% | 9%
drm12% | 10% | 29% | 21% | 25%
sound6% | 18% | 33% | 17% | 23%
soc0% | 55% | 8% | 20% | 16%
asm-generic0% | 34% | 10% | 11% | 43%
scsi0% | 29% | 38% | 18% | 12%
math-emu0% | 51% | 18% | 24% | 5%
kunit0% | 84% | 0% | 12% | 3%
media0% | 4% | 38% | 25% | 30%
xen0% | 0% | 29% | 34% | 36%
pcmcia0% | 0% | 60% | 26% | 12%
crypto0% | 0% | 11% | 32% | 55%
ras0% | 0% | 100% | 0% | 0%
clocksource0% | 0% | 57% | 0% | 42%
kvm0% | 0% | 46% | 20% | 32%
misc0% | 0% | 0% | 39% | 60%
keys0% | 0% | 0% | 0% | 100%
vdso0% | 0% | 0% | 0% | 100%
memory0% | 0% | 0% | 0% | 100%
Longest Files (Top 50)
File# lines# units
mlx5_ifc.h
in linux/mlx5
 8260 -
registers.h
in linux/mfd/arizona
 6184 -
registers.h
in linux/mfd/wm8994
 3834 -
netdevice.h
in linux
 3161 173
palmas.h
in linux/mfd
 2981 6
registers.h
in linux/mfd/madera
 2964 -
ib_verbs.h
in rdma
 2959 97
cros_ec_commands.h
in linux/platform_data
 2901 -
pci_ids.h
in linux
 2756 -
skbuff.h
in linux
 2740 260
2718 27
ieee80211.h
in linux
 2554 59
fs.h
in linux
 2409 167
ext4.h
in trace/events
 2309 -
mm.h
in linux
 2191 216
hci.h
in net/bluetooth
 2134 1
atomic-arch-fallback.h
in linux/atomic
 1953 -
sock.h
in net
 1903 155
sunrpc.h
in trace/events
 1880 -
nl80211.h
in uapi/linux
 1860 -
bpf.h
in linux
 1832 86
rpcrdma.h
in trace/events
 1816 -
1790 18
radeon.h
in video
 1787 -
btrfs.h
in trace/events
 1787 -
atomic-instrumented.h
in linux/atomic
 1761 -
cec-funcs.h
in uapi/linux
 1694 150
security.h
in linux
 1691 247
pci.h
in linux
 1672 109
tcp.h
in net
 1658 126
f2fs.h
in trace/events
 1650 -
xfrm.h
in net
 1618 91
1598 7
videodev2.h
in uapi/linux
 1592 1
greybus_protocols.h
in linux/greybus
 1578 -
actbl2.h
in acpi
 1528 -
kvm.h
in uapi/linux
 1522 -
nfs_xdr.h
in linux
 1520 1
hci_core.h
in net/bluetooth
 1502 32
libata.h
in linux
 1491 58
v4l2-controls.h
in uapi/linux
 1482 -
kvm_host.h
in linux
 1443 73
nvme.h
in linux
 1386 2
bpf.h
in uapi/linux
 1374 -
sched.h
in linux
 1373 69
iscsi_common.h
in linux/qed
 1351 -
device.h
in linux/mlx4
 1322 13
rxrpc.h
in trace/events
 1321 -
ip_vs.h
in net
 1308 65
exynos5433.h
in dt-bindings/clock
 1298 -
Files With Most Units (Top 50)
File# lines# units
skbuff.h
in linux
 2740 260
security.h
in linux
 1691 247
mm.h
in linux
 2191 216
netdevice.h
in linux
 3161 173
fs.h
in linux
 2409 167
sock.h
in net
 1903 155
cec-funcs.h
in uapi/linux
 1694 150
tcp.h
in net
 1658 126
memcontrol.h
in linux
 1157 118
pci.h
in linux
 1672 109
acpi.h
in linux
 1125 107
pgtable.h
in linux
 1091 104
of.h
in linux
 1076 102
ib_verbs.h
in rdma
 2959 97
audit.h
in linux
 622 95
xfrm.h
in net
 1618 91
io.h
in asm-generic
 893 86
bpf.h
in linux
 1832 86
netlink.h
in net
 792 79
blkdev.h
in linux
 960 79
dbx500-prcmu.h
in linux/mfd
 432 78
hugetlb.h
in linux
 831 76
kvm_host.h
in linux
 1443 73
pm_runtime.h
in linux
 256 71
1023 70
sched.h
in linux
 1373 69
pagemap.h
in linux
 713 67
fscrypt.h
in linux
 542 67
iommu.h
in linux
 733 66
irq.h
in linux
 800 66
cpumask.h
in linux
 516 66
ip_vs.h
in net
 1308 65
ntb.h
in linux
 599 64
vmstat.h
in linux
 509 63
dmaengine.h
in linux
 937 61
cgroup.h
in linux
 481 61
ipv6.h
in net
 934 60
perf_event.h
in linux
 1003 60
tick.h
in linux
 263 59
ieee80211.h
in linux
 2554 59
libata.h
in linux
 1491 58
phy.h
in linux
 973 56
swapops.h
in linux
 287 55
ftrace.h
in linux
 638 55
kasan.h
in linux
 379 55
ata.h
in linux
 845 54
v4l2-tpg.h
in media/tpg
 529 54
pm_opp.h
in linux
 399 53
441 53
suspend.h
in linux
 310 51
Files With Long Lines (Top 50)

There are 63 files with lines longer than 120 characters. In total, there are 208 long lines.

File# lines# units# long lines
efi.h
in linux
 972 22 45
i915_drm.h
in uapi/drm
 1003 - 27
zstd_lib.h
in linux
 499 - 17
nouveau_drm.h
in uapi/drm
 142 - 7
tegra_drm.h
in uapi/drm
 250 - 6
etnaviv_drm.h
in uapi/drm
 189 - 6
vc4_drm.h
in uapi/drm
 221 - 5
radeon_drm.h
in uapi/drm
 790 - 5
panfrost_drm.h
in uapi/drm
 124 - 5
amdgpu_drm.h
in uapi/drm
 677 - 5
pm_opp.h
in linux
 399 53 5
emu10k1.h
in sound
 1208 1 4
vmscan.h
in trace/events
 389 - 3
wait_bit.h
in linux
 184 1 3
465 - 2
msm_drm.h
in uapi/drm
 194 - 2
savage_drm.h
in uapi/drm
 140 - 2
actypes.h
in acpi
 663 - 2
sock.h
in trace/events
 215 - 2
net.h
in trace/events
 245 - 2
filelock.h
in trace/events
 197 - 2
ocelot.h
in soc/mscc
 809 2 2
audit.h
in linux
 622 95 2
uprobes.h
in linux
 168 10 2
security.h
in linux
 1691 247 2
75 14 2
module.h
in linux
 568 39 2
syscalls.h
in linux
 1122 9 2
gus.h
in sound
 468 9 2
info.h
in sound
 170 18 2
v3d_drm.h
in uapi/drm
 253 - 1
zorro_ids.h
in uapi/linux
 428 - 1
soundcard.h
in uapi/linux
 754 - 1
md_p.h
in uapi/linux/raid
 249 1 1
firewire.h
in uapi/sound
 144 - 1
asound.h
in uapi/sound
 948 - 1
tcp.h
in trace/events
 272 - 1
devlink.h
in trace/events
 173 2 1
mptcp.h
in trace/events
 142 - 1
79 - 1
btrfs.h
in trace/events
 1787 - 1
fib.h
in trace/events
 83 - 1
kmem.h
in trace/events
 298 1 1
fib6.h
in trace/events
 73 - 1
thp.h
in trace/events
 38 - 1
oom.h
in trace/events
 148 - 1
migrate.h
in trace/events
 79 - 1
mce.h
in trace/events
 63 - 1
sched.h
in trace/events
 464 1 1
irq_matrix.h
in trace/events
 140 - 1