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

6% duplication:

54,918 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
3,385 duplicated lines

384 duplicates

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 384 duplicates...

Size	#	Folders	Files	Lines	Code
34	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	53:87 (13%) 114:148 (13%)	view
31	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	53:84 (12%) 174:205 (12%)	view
31	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	114:145 (12%) 174:205 (12%)	view
26	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	182:208 (10%) 255:281 (10%)	view
25	x 2	kconfig kconfig	nconf.c nconf.c	1104:1128 (2%) 1286:1310 (2%)	view
25	x 2	kconfig kconfig	expr.c expr.c	433:458 (2%) 497:522 (2%)	view
23	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	61:84 (9%) 255:278 (9%)	view
23	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	122:145 (9%) 255:278 (9%)	view
22	x 2	ROOT ROOT	bpf_doc.py bpf_doc.py	520:541 (4%) 573:594 (4%)	view
20	x 2	coccinelle/iterators coccinelle/iterators	cocci device_node_continue.cocci for_each_child.cocci	29:49 (23%) 26:46 (6%)	view
19	x 2	ROOT ROOT	checkpatch.pl get_maintainer.pl	1455:1479 (<1%) 1464:1488 (<1%)	view
18	x 2	coccinelle/misc coccinelle/misc	cocci boolconv.cocci boolconv.cocci	21:39 (23%) 50:68 (23%)	view
17	x 2	kconfig kconfig	gconf.c gconf.c	233:249 (1%) 283:299 (1%)	view
17	x 2	kconfig kconfig	qconf.cc qconf.cc	616:635 (1%) 681:700 (1%)	view
17	x 2	coccinelle/locks coccinelle/locks	cocci double_lock.cocci mini_lock.cocci	21:38 (20%) 24:41 (19%)	view
17	x 2	kconfig kconfig	mconf.c nconf.c	849:872 (2%) 1337:1360 (1%)	view
17	x 2	kconfig/lxdialog kconfig/lxdialog	inputbox.c yesno.c	49:72 (7%) 38:61 (26%)	view
16	x 2	ROOT ROOT	checkpatch.pl get_maintainer.pl	223:241 (<1%) 191:209 (<1%)	view
16	x 2	kconfig/lxdialog kconfig/lxdialog	checklist.c yesno.c	130:150 (7%) 41:61 (25%)	view
16	x 2	ROOT ROOT	extract_xc3028.pl extract_xc3028.pl	145:167 (1%) 911:933 (1%)	view
16	x 2	kconfig/lxdialog kconfig/lxdialog	checklist.c inputbox.c	130:150 (7%) 52:72 (7%)	view
15	x 2	kconfig kconfig	mconf.c nconf.c	520:539 (1%) 786:805 (1%)	view
15	x 2	kconfig kconfig	images.c images.c	263:277 (4%) 297:311 (4%)	view
15	x 2	coccinelle/api coccinelle/api	cocci atomic_as_refcounter.cocci atomic_as_refcounter.cocci	23:38 (13%) 66:81 (13%)	view
14	x 2	coccinelle/api coccinelle/api	cocci memdup_user.cocci memdup_user.cocci	35:48 (14%) 58:71 (14%)	view
14	x 2	coccinelle/api coccinelle/api	cocci platform_get_irq.cocci platform_get_irq.cocci	13:28 (15%) 66:81 (15%)	view
13	x 2	coccinelle/api coccinelle/null	cocci kstrdup.cocci eno.cocci	3:17 (14%) 3:17 (32%)	view
13	x 2	kconfig kconfig	nconf.c nconf.c	807:819 (1%) 862:874 (1%)	view
13	x 2	coccinelle/iterators coccinelle/iterators	cocci for_each_child.cocci for_each_child.cocci	84:97 (4%) 117:130 (4%)	view
13	x 2	kconfig/lxdialog kconfig/lxdialog	checklist.c menubox.c	55:70 (6%) 105:120 (4%)	view
12	x 2	coccinelle/api coccinelle/null	cocci memdup.cocci eno.cocci	3:15 (22%) 3:15 (30%)	view
12	x 2	coccinelle/api coccinelle/api	cocci kstrdup.cocci memdup_user.cocci	3:15 (13%) 4:16 (12%)	view
12	x 2	coccinelle/free coccinelle/free	cocci clk_put.cocci iounmap.cocci	5:17 (19%) 5:17 (19%)	view
12	x 2	coccinelle/free coccinelle/free	cocci clk_put.cocci iounmap.cocci	32:43 (19%) 32:43 (19%)	view
12	x 2	kconfig kconfig	images.c images.c	102:113 (3%) 108:119 (3%)	view
12	x 2	coccinelle/api coccinelle/api	cocci memdup.cocci memdup_user.cocci	3:15 (22%) 4:16 (12%)	view
12	x 2	ROOT ROOT	markup_oops.pl markup_oops.pl	286:297 (4%) 306:317 (4%)	view
12	x 2	kconfig/lxdialog kconfig/lxdialog	checklist.c menubox.c	130:144 (5%) 193:207 (4%)	view
12	x 2	coccinelle/api coccinelle/api	cocci kstrdup.cocci memdup.cocci	3:15 (13%) 3:15 (22%)	view
12	x 2	coccinelle/api coccinelle/api	cocci platform_get_irq.cocci platform_get_irq.cocci	13:26 (13%) 39:52 (13%)	view
12	x 2	coccinelle/api coccinelle/api	cocci platform_get_irq.cocci platform_get_irq.cocci	39:52 (13%) 66:79 (13%)	view
12	x 2	coccinelle/api coccinelle/null	cocci memdup_user.cocci eno.cocci	4:16 (12%) 3:15 (30%)	view
12	x 2	ROOT ROOT	asn1_compiler.c asn1_compiler.c	1532:1546 (<1%) 1558:1572 (<1%)	view
12	x 2	kconfig/lxdialog kconfig/lxdialog	inputbox.c menubox.c	52:66 (5%) 193:207 (4%)	view
12	x 2	kconfig/lxdialog kconfig/lxdialog	menubox.c yesno.c	193:207 (4%) 41:55 (19%)	view
11	x 2	coccinelle/null coccinelle/null	cocci deref_null.cocci deref_null.cocci	29:40 (4%) 225:236 (4%)	view
11	x 2	coccinelle/free coccinelle/null	cocci kfree.cocci deref_null.cocci	98:108 (9%) 195:205 (4%)	view
11	x 2	coccinelle/free coccinelle/null	cocci kfree.cocci deref_null.cocci	98:108 (9%) 135:145 (4%)	view
11	x 2	coccinelle/iterators coccinelle/null	cocci itnull.cocci eno.cocci	10:22 (12%) 5:17 (27%)	view
11	x 2	coccinelle/api coccinelle/iterators	cocci kstrdup.cocci itnull.cocci	5:17 (12%) 10:22 (12%)	view

Duplicated Units

The list of top 8 duplicated units.

See data for all 8 unit duplicates...

Size	#	Folders	Files	Lines	Code
13	x 2	kconfig kconfig	qconf.cc gconf.c	1848:1862 1426:1440	view
11	x 2	dtc/libfdt dtc	libfdt.h dtc.h	161:173 77:89	view
8	x 2	kconfig/lxdialog kconfig/lxdialog	inputbox.c checklist.c	16:26 88:98	view
8	x 2	ROOT ROOT	checkpatch.pl get_maintainer.pl	1457:1467 1466:1476	view
8	x 2	ROOT ROOT	checkpatch.pl get_maintainer.pl	1469:1479 1478:1488	view
7	x 2	kconfig kconfig	qconf.cc qconf.cc	463:472 474:483	view
7	x 2	dtc/libfdt dtc	libfdt.h dtc.h	141:149 67:75	view
6	x 2	dtc dtc	fdtget.c fdtput.c	282:289 277:284	view