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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.

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Duplication Overall

5% duplication:

60,496 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
3,529 duplicated lines

247 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
boot (1%) --> purgatory (8%)	52	1 file pair	details...

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Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 247 duplicates...

Size	#	Folders	Files	Lines	Code
110	x 2	kernel/vdso32 kernel/vdso64	S vdso32.lds.S vdso64.lds.S	12:136 (88%) 12:136 (85%)	view
78	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	525:606 (10%) 620:701 (10%)	view
23	x 2	kernel kernel	ptrace.c ptrace.c	1313:1338 (2%) 1525:1550 (2%)	view
22	x 2	kernel kernel	ptrace.c ptrace.c	1289:1313 (2%) 1493:1517 (2%)	view
20	x 2	boot/compressed purgatory	S vmlinux.lds.S purgatory.lds.S	13:32 (20%) 10:29 (41%)	view
18	x 2	include/uapi/asm include/uapi/asm	dasd.h dasd.h	30:47 (13%) 100:117 (13%)	view
16	x 2	mm mm	gmap.c gmap.c	2364:2380 (1%) 2399:2415 (1%)	view
16	x 2	kvm kvm	trace.h trace.h	287:304 (4%) 312:329 (4%)	view
16	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	310:330 (2%) 337:357 (2%)	view
16	x 2	kernel kernel	perf_cpum_cf_events.c perf_cpum_cf_events.c	328:343 (2%) 348:363 (2%)	view
15	x 2	kvm kvm	priv.c priv.c	255:272 (1%) 302:319 (1%)	view
15	x 2	pci pci	pci_mmio.c pci_mmio.c	160:176 (6%) 299:315 (6%)	view
14	x 2	mm mm	pgtable.c pgtable.c	908:925 (1%) 970:987 (1%)	view
14	x 2	kernel kernel	debug.c debug.c	1112:1128 (1%) 1147:1164 (1%)	view
14	x 2	kernel kernel	debug.c debug.c	1034:1049 (1%) 1067:1082 (1%)	view
14	x 2	crypto crypto	S crc32be-vx.S crc32le-vx.S	76:89 (7%) 86:99 (5%)	view
14	x 2	crypto crypto	prng.c prng.c	518:535 (2%) 601:618 (2%)	view
14	x 2	mm mm	gmap.c gmap.c	127:143 (<1%) 152:168 (<1%)	view
13	x 2	kvm kvm	gaccess.c gaccess.c	43:55 (1%) 58:70 (1%)	view
13	x 2	include/asm include/asm	cmpxchg.h cmpxchg.h	98:110 (8%) 119:131 (8%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	757:772 (1%) 783:798 (1%)	view
12	x 2	pci pci	pci_mmio.c pci_mmio.c	120:142 (5%) 262:284 (5%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	544:555 (1%) 677:688 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	757:772 (1%) 840:855 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	525:536 (1%) 658:669 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	337:352 (1%) 364:379 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	563:574 (1%) 620:631 (1%)	view
12	x 2	include/asm lib	string.h string.c	106:118 (12%) 288:300 (7%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	310:325 (1%) 364:379 (1%)	view
12	x 2	include/asm include/asm	cpacf.h cpacf.h	249:262 (5%) 281:294 (5%)	view
12	x 2	kvm kvm	priv.c priv.c	392:404 (1%) 1101:1114 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	544:555 (1%) 582:593 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	582:593 (1%) 639:650 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	525:536 (1%) 563:574 (1%)	view
12	x 2	kernel kernel	audit.c compat_audit.c	48:59 (25%) 34:45 (41%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	783:798 (1%) 840:855 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	620:631 (1%) 658:669 (1%)	view
12	x 2	crypto crypto	S chacha-s390.S chacha-s390.S	639:650 (1%) 677:688 (1%)	view
11	x 2	kernel kernel	crash_dump.c crash_dump.c	147:158 (2%) 190:201 (2%)	view
11	x 2	kernel/vdso32 kernel/vdso64	S note.S note.S	1:13 (100%) 1:13 (100%)	view
11	x 2	kvm kvm	trace.h trace.h	152:164 (3%) 419:431 (3%)	view
11	x 2	include/asm include/asm	percpu.h percpu.h	95:105 (11%) 114:124 (11%)	view
11	x 2	crypto crypto	S crc32be-vx.S crc32le-vx.S	24:36 (5%) 25:37 (4%)	view
11	x 2	mm mm	mmap.c mmap.c	80:93 (10%) 119:134 (10%)	view
11	x 2	include/asm include/asm	cpacf.h cpacf.h	335:347 (5%) 363:375 (5%)	view
11	x 2	kernel kernel	uprobes.c uprobes.c	175:185 (3%) 211:221 (3%)	view
11	x 2	kernel kernel	ebcdic.c ebcdic.c	68:87 (5%) 217:236 (5%)	view
11	x 2	crypto crypto	S crc32be-vx.S crc32le-vx.S	178:188 (5%) 240:250 (4%)	view
10	x 2	kernel kernel	compat_signal.c signal.c	140:150 (4%) 186:196 (3%)	view
10	x 2	include/asm include/asm	cpacf.h cpacf.h	310:321 (4%) 363:374 (4%)	view

Duplicated Units

The list of top 10 duplicated units.

See data for all 10 unit duplicates...

Size	#	Folders	Files	Lines	Code
31	x 2	lib lib	uaccess.c uaccess.c	92:124 165:197	view
28	x 2	lib lib	uaccess.c uaccess.c	61:90 134:163	view
11	x 2	crypto crypto	paes_s390.c aes_s390.c	623:636 554:567	view
9	x 2	include/asm include/asm	pgtable.h pgtable.h	555:565 567:577	view
8	x 2	include/asm include/asm	atomic_ops.h atomic_ops.h	157:165 179:187	view
7	x 2	kvm kvm	kvm-s390.h kvm-s390.h	111:120 163:172	view
6	x 2	crypto crypto	paes_s390.c paes_s390.c	159:167 274:282	view
6	x 2	include/asm include/asm	archrandom.h archrandom.h	37:43 45:51	view
6	x 2	kernel kernel	ptrace.c ptrace.c	965:971 986:992	view
6	x 2	kernel kernel	crash_dump.c crash_dump.c	692:699 704:711	view