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Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

9% duplication:

241,944 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
23,277 duplicated lines

3,533 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
lib (3%) --> um (6%)	341	2 file pairs	details...
include (<1%) --> um (2%)	118	5 file pairs	details...
include (<1%) --> kvm (<1%)	110	2 file pairs	details...
entry (1%) --> um (1%)	109	4 file pairs	details...
boot (<1%) --> lib (<1%)	84	2 file pairs	details...
ia32 (8%) --> kernel (<1%)	72	2 file pairs	details...
kernel (<1%) --> power (4%)	66	1 file pair	details...
boot (<1%) --> kernel (<1%)	58	2 file pairs	details...

Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 3,533 duplicates...

Size	#	Folders	Files	Lines	Code
300	x 2	crypto crypto	S serpent-avx-x86_64-asm_64.S serpent-avx2-asm_64.S	51:365 (46%) 51:365 (45%)	view
176	x 2	crypto crypto	S serpent-avx-x86_64-asm_64.S serpent-avx2-asm_64.S	370:553 (27%) 370:553 (26%)	view
111	x 2	crypto crypto	S aesni-intel_asm.S aesni-intel_asm.S	977:1095 (3%) 1185:1303 (3%)	view
110	x 2	crypto crypto	S camellia-aesni-avx-asm_64.S camellia-aesni-avx2-asm_64.S	591:705 (12%) 627:741 (11%)	view
79	x 2	crypto crypto	S cast5-avx-x86_64-asm_64.S cast6-avx-x86_64-asm_64.S	48:140 (16%) 49:140 (23%)	view
74	x 2	crypto crypto	curve25519-x86_64.c curve25519-x86_64.c	161:244 (5%) 296:379 (5%)	view
63	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	583:645 (2%) 650:712 (2%)	view
60	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	785:844 (2%) 849:908 (2%)	view
60	x 2	crypto crypto	S aesni-intel_avx-x86_64.S aesni-intel_avx-x86_64.S	1136:1206 (2%) 2086:2157 (2%)	view
58	x 2	lib um	S checksum_32.S checksum_32.S	182:241 (14%) 149:208 (29%)	view
57	x 2	crypto crypto	S sm4-aesni-avx-asm_64.S sm4-aesni-avx2-asm_64.S	71:142 (11%) 86:156 (13%)	view
56	x 2	crypto crypto	S sha1_ni_asm.S sha256_ni_asm.S	3:60 (20%) 3:60 (17%)	view
54	x 2	crypto crypto	S sha512-avx-asm.S sha512-ssse3-asm.S	367:422 (13%) 369:424 (13%)	view
54	x 2	lib um	S checksum_32.S checksum_32.S	70:123 (13%) 57:110 (27%)	view
53	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	1473:1525 (2%) 1530:1582 (2%)	view
53	x 2	crypto crypto	curve25519-x86_64.c curve25519-x86_64.c	672:731 (3%) 783:840 (3%)	view
50	x 2	crypto crypto	S sha512-avx-asm.S sha512-ssse3-asm.S	3:55 (12%) 3:55 (12%)	view
50	x 2	crypto crypto	S sha256-avx-asm.S sha256-ssse3-asm.S	97:155 (11%) 90:149 (10%)	view
47	x 2	events/intel events/intel	core.c core.c	1127:1184 (1%) 1310:1367 (1%)	view
46	x 2	crypto crypto	S sha512-avx2-asm.S sha512-ssse3-asm.S	3:48 (7%) 3:48 (11%)	view
46	x 2	crypto crypto	S sha512-avx-asm.S sha512-avx2-asm.S	3:48 (11%) 3:48 (7%)	view
45	x 2	crypto crypto	S sha256-avx2-asm.S sha256-ssse3-asm.S	3:47 (7%) 3:47 (9%)	view
44	x 2	crypto crypto	S aesni-intel_avx-x86_64.S aesni-intel_avx-x86_64.S	1066:1120 (1%) 2016:2070 (1%)	view
42	x 2	crypto crypto	poly1305-x86_64-cryptogams.pl poly1305-x86_64-cryptogams.pl	3282:3335 (1%) 3647:3700 (1%)	view
42	x 2	crypto crypto	S aesni-intel_asm.S aesni-intel_asm.S	1129:1176 (1%) 1341:1388 (1%)	view
41	x 2	events/intel events/intel	core.c core.c	1802:1842 (<1%) 1918:1958 (<1%)	view
40	x 2	crypto crypto	S aesni-intel_avx-x86_64.S aesni-intel_avx-x86_64.S	1258:1310 (1%) 2213:2265 (1%)	view
40	x 2	crypto crypto	S serpent-avx-x86_64-asm_64.S serpent-avx2-asm_64.S	560:604 (6%) 560:604 (6%)	view
40	x 2	crypto crypto	S serpent-avx-x86_64-asm_64.S serpent-avx2-asm_64.S	614:658 (6%) 614:658 (6%)	view
40	x 2	crypto crypto	S chacha-avx2-x86_64.S chacha-avx2-x86_64.S	272:318 (4%) 330:376 (4%)	view
39	x 2	events/intel events/intel	core.c core.c	1201:1239 (<1%) 1384:1422 (<1%)	view
39	x 2	events/intel events/intel	core.c core.c	655:693 (<1%) 1039:1077 (<1%)	view
39	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	1331:1369 (1%) 1374:1412 (1%)	view
36	x 2	crypto crypto	S aesni-intel_avx-x86_64.S aesni-intel_avx-x86_64.S	1490:1531 (1%) 2448:2488 (1%)	view
36	x 2	crypto crypto	poly1305-x86_64-cryptogams.pl poly1305-x86_64-cryptogams.pl	637:680 (1%) 1559:1602 (1%)	view
35	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	1921:1955 (1%) 1960:1994 (1%)	view
35	x 2	events/intel events/intel	core.c core.c	1855:1889 (<1%) 1971:2005 (<1%)	view
35	x 2	crypto crypto	S sha256-avx-asm.S sha256-ssse3-asm.S	3:37 (7%) 3:37 (7%)	view
35	x 2	crypto crypto	S sha256-avx-asm.S sha256-avx2-asm.S	3:37 (7%) 3:37 (5%)	view
34	x 2	crypto crypto	S camellia-aesni-avx-asm_64.S camellia-aesni-avx2-asm_64.S	447:481 (3%) 481:515 (3%)	view
34	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	1960:1993 (1%) 2015:2048 (1%)	view
34	x 2	include/asm/uv include/asm/uv	uv_mmrs.h uv_mmrs.h	1921:1954 (1%) 2015:2048 (1%)	view
33	x 2	crypto crypto	S sha256-avx2-asm.S sha512-avx2-asm.S	9:41 (5%) 10:42 (5%)	view
33	x 2	crypto crypto	S aes_ctrby8_avx-x86_64.S sha1_avx2_x86_64_asm.S	31:63 (6%) 24:56 (5%)	view
33	x 2	crypto crypto	S sha256-ssse3-asm.S sha512-ssse3-asm.S	9:41 (7%) 10:42 (8%)	view
33	x 2	crypto crypto	S sha256-ssse3-asm.S sha512-avx-asm.S	9:41 (7%) 10:42 (8%)	view
33	x 2	crypto crypto	S sha256-ssse3-asm.S sha512-avx2-asm.S	9:41 (7%) 10:42 (5%)	view
33	x 2	crypto crypto	S serpent-avx-x86_64-asm_64.S serpent-sse2-x86_64-asm_64.S	621:653 (5%) 700:732 (4%)	view
33	x 2	crypto crypto	S serpent-avx2-asm_64.S serpent-sse2-x86_64-asm_64.S	567:599 (5%) 636:668 (4%)	view
33	x 2	crypto crypto	S sha256-avx2-asm.S sha512-avx-asm.S	9:41 (5%) 10:42 (8%)	view

Duplicated Units

The list of top 22 duplicated units.

See data for all 22 unit duplicates...

Size	#	Folders	Files	Lines	Code
18	x 2	include/asm include/asm	bitops.h bitops.h	283:311 324:352	view
16	x 2	boot include/asm	string.c div64.h	201:218 43:60	view
14	x 2	kernel/cpu kernel/cpu	amd.c hygon.c	290:305 33:48	view
12	x 2	net net	bpf_jit_comp.c bpf_jit_comp32.c	71:83 1172:1184	view
12	x 2	include/asm include/asm	archrandom.h archrandom.h	20:32 34:46	view
10	x 2	boot/compressed lib	sev.c insn-eval.c	33:46 62:75	view
9	x 2	um kernel/fpu	signal.c regset.c	24:36 184:197	view
8	x 2	crypto crypto	crc32-pclmul_glue.c crc32c-intel_glue.c	92:101 83:92	view
8	x 3	crypto crypto crypto	des3_ede_glue.c camellia_glue.c blowfish_glue.c	344:359 1358:1374 297:312	view
8	x 2	crypto crypto	sha1_ssse3_glue.c sha256_ssse3_glue.c	152:161 196:205	view
8	x 2	include/asm include/asm	checksum_64.h checksum_32.h	23:31 99:107	view
8	x 2	kernel kernel/cpu	kvm.c vmware.c	953:962 317:326	view
7	x 2	include/asm um/asm	checksum_64.h checksum_64.h	169:176 8:15	view
7	x 2	include/asm include/asm	archrandom.h archrandom.h	48:55 57:64	view
7	x 3	platform/olpc platform/olpc platform/olpc	olpc-xo15-sci.c olpc-xo15-sci.c olpc-xo1-sci.c	76:84 86:94 53:61	view
6	x 2	crypto crypto	crc32-pclmul_glue.c crc32c-intel_glue.c	103:111 94:102	view
6	x 2	crypto crypto	sha512_ssse3_glue.c sha256_ssse3_glue.c	271:278 272:279	view
6	x 2	boot boot	boot.h boot.h	176:182 183:189	view
6	x 2	boot boot/compressed	tty.c misc.c	28:36 102:110	view
6	x 2	entry/vsyscall um	vsyscall_64.c mem_32.c	328:336 42:50	view
6	x 2	include/asm include/asm	bitops.h bitops.h	233:239 261:267	view
6	x 3	include/asm include/asm include/asm	atomic64_64.h atomic64_64.h atomic.h	200:206 218:224 212:218	view