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

15% duplication:

30,596 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
4,661 duplicated lines

498 duplicates

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 498 duplicates...

Size	#	Folders	Files	Lines	Code
87	x 2	include/asm include/asm	xor.h xor.h	264:350 (10%) 695:781 (10%)	view
55	x 2	include/asm include/asm	xor.h xor.h	167:221 (6%) 569:623 (6%)	view
43	x 2	lib lib	S divide.S ev6-divide.S	47:94 (22%) 57:104 (18%)	view
39	x 2	lib lib	S divide.S ev6-divide.S	6:46 (20%) 6:46 (16%)	view
36	x 2	boot boot	bootp.c main.c	31:107 (42%) 25:101 (36%)	view
29	x 2	include/asm include/asm	xor.h xor.h	113:141 (3%) 491:519 (3%)	view
28	x 2	include/asm include/asm	core_apecs.h core_apecs.h	232:259 (13%) 301:328 (13%)	view
25	x 2	lib lib	S ev6-stxncpy.S stxncpy.S	5:29 (7%) 5:29 (8%)	view
23	x 2	lib lib	S udiv-qrnnd.S udiv-qrnnd.S	54:76 (15%) 62:84 (15%)	view
23	x 2	lib lib	S udiv-qrnnd.S udiv-qrnnd.S	104:126 (15%) 112:134 (15%)	view
23	x 2	include/asm include/asm	xor.h xor.h	89:111 (2%) 467:489 (2%)	view
22	x 2	kernel kernel	core_titan.c core_tsunami.c	165:191 (5%) 142:168 (8%)	view
22	x 2	kernel kernel	core_tsunami.c core_wildfire.c	142:168 (8%) 408:434 (5%)	view
22	x 2	kernel kernel	core_irongate.c core_polaris.c	129:155 (10%) 111:137 (25%)	view
22	x 2	kernel kernel	core_irongate.c core_titan.c	129:155 (10%) 165:191 (5%)	view
22	x 2	kernel kernel	core_polaris.c core_wildfire.c	111:137 (25%) 408:434 (5%)	view
22	x 2	kernel kernel	core_titan.c core_wildfire.c	165:191 (5%) 408:434 (5%)	view
22	x 2	kernel kernel	core_irongate.c core_wildfire.c	129:155 (10%) 408:434 (5%)	view
22	x 2	kernel kernel	core_polaris.c core_tsunami.c	111:137 (25%) 142:168 (8%)	view
22	x 2	kernel kernel	core_irongate.c core_tsunami.c	129:155 (10%) 142:168 (8%)	view
22	x 2	kernel kernel	core_polaris.c core_titan.c	111:137 (25%) 165:191 (5%)	view
21	x 2	lib lib	S strcat.S strncat.S	25:49 (47%) 30:54 (30%)	view
20	x 2	include/asm include/asm	xor.h xor.h	34:53 (2%) 394:413 (2%)	view
20	x 2	kernel kernel	pci-noop.c pci.c	31:62 (33%) 390:425 (8%)	view
19	x 2	lib lib	S ev6-memset.S ev6-memset.S	339:361 (3%) 527:549 (3%)	view
19	x 2	kernel kernel	traps.c traps.c	551:569 (2%) 914:932 (2%)	view
19	x 2	lib lib	S ev6-stxcpy.S ev6-stxncpy.S	22:44 (7%) 30:52 (5%)	view
19	x 2	lib lib	S ev6-memset.S ev6-memset.S	161:183 (3%) 339:361 (3%)	view
19	x 2	kernel kernel	traps.c traps.c	503:521 (2%) 858:876 (2%)	view
19	x 2	lib lib	S copy_user.S ev6-copy_user.S	13:35 (16%) 24:45 (9%)	view
19	x 2	kernel kernel	traps.c traps.c	527:545 (2%) 886:904 (2%)	view
19	x 2	lib lib	S ev6-memset.S ev6-memset.S	161:183 (3%) 527:549 (3%)	view
18	x 2	kernel kernel	core_titan.c core_wildfire.c	114:138 (4%) 357:381 (4%)	view
18	x 2	lib lib	S ev67-strlen.S ev67-strrchr.S	4:21 (39%) 4:22 (19%)	view
18	x 2	lib lib	S copy_page.S ev6-copy_page.S	21:42 (41%) 175:196 (10%)	view
18	x 2	kernel kernel	core_tsunami.c core_wildfire.c	91:115 (7%) 357:381 (4%)	view
18	x 2	kernel kernel	core_titan.c core_tsunami.c	114:138 (4%) 91:115 (7%)	view
17	x 2	kernel kernel	core_irongate.c core_polaris.c	104:127 (8%) 85:109 (19%)	view
17	x 2	kernel kernel	core_marvel.c core_tsunami.c	571:588 (3%) 148:165 (6%)	view
17	x 2	kernel kernel	core_tsunami.c core_wildfire.c	117:140 (6%) 383:406 (4%)	view
17	x 2	kernel kernel	core_marvel.c core_titan.c	571:588 (3%) 171:188 (4%)	view
17	x 2	kernel kernel	core_irongate.c core_titan.c	104:127 (8%) 140:163 (4%)	view
17	x 2	kernel kernel	core_polaris.c core_titan.c	85:109 (19%) 140:163 (4%)	view
17	x 2	kernel kernel	core_irongate.c core_tsunami.c	104:127 (8%) 117:140 (6%)	view
17	x 2	lib lib	S ev6-stxcpy.S stxcpy.S	5:21 (6%) 5:21 (7%)	view
17	x 2	kernel kernel	core_titan.c core_wildfire.c	140:163 (4%) 383:406 (4%)	view
17	x 2	kernel kernel	core_marvel.c core_wildfire.c	571:588 (3%) 414:431 (4%)	view
17	x 2	kernel kernel	core_polaris.c core_wildfire.c	85:109 (19%) 383:406 (4%)	view
17	x 2	kernel kernel	core_polaris.c core_tsunami.c	85:109 (19%) 117:140 (6%)	view
17	x 2	kernel kernel	core_irongate.c core_marvel.c	135:152 (8%) 571:588 (3%)	view

Duplicated Units

The list of top 11 duplicated units.

See data for all 11 unit duplicates...

Size	#	Folders	Files	Lines	Code
18	x 2	include/asm include/asm	spinlock.h spinlock.h	97:117 119:139	view
17	x 2	include/asm include/asm	spinlock.h spinlock.h	57:75 77:95	view
15	x 2	include/asm include/asm	local.h local.h	21:36 38:53	view
12	x 2	lib lib	csum_partial_copy.c checksum.c	55:76 18:39	view
7	x 2	include/asm kernel	io.h io.c	319:326 26:33	view
7	x 2	include/asm kernel	io.h io.c	362:369 35:42	view
7	x 2	include/asm kernel	io.h io.c	409:416 155:162	view
7	x 2	include/asm kernel	io.h io.c	418:425 164:171	view
7	x 2	include/asm kernel	io.h io.c	461:468 173:180	view
7	x 2	include/asm kernel	io.h io.c	470:477 182:189	view
7	x 2	kernel kernel	bugs.c bugs.c	19:26 28:35	view