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

2% duplication:

81,861 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,956 duplicated lines

140 duplicates

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 140 duplicates...

Size	#	Folders	Files	Lines	Code
21	x 2	ROOT ROOT	mmap.c nommu.c	1634:1664 (1%) 1300:1330 (2%)	view
15	x 2	ROOT ROOT	rmap.c rmap.c	1423:1446 (1%) 1723:1750 (1%)	view
15	x 2	ROOT ROOT	highmem.c highmem.c	615:643 (4%) 652:673 (4%)	view
14	x 2	ROOT ROOT	memcontrol.c memcontrol.c	3588:3601 (<1%) 3780:3793 (<1%)	view
13	x 2	ROOT ROOT	userfaultfd.c userfaultfd.c	413:428 (2%) 637:652 (2%)	view
13	x 2	ROOT ROOT	memblock.c memblock.c	1031:1046 (1%) 1135:1150 (1%)	view
13	x 2	ROOT ROOT	page_table_check.c page_table_check.c	87:103 (8%) 122:138 (8%)	view
13	x 2	ROOT ROOT	mmap.c mmap.c	2148:2163 (<1%) 2188:2205 (<1%)	view
13	x 2	ROOT ROOT	rmap.c rmap.c	1557:1582 (1%) 1877:1902 (1%)	view
13	x 2	ROOT ROOT	rmap.c rmap.c	1492:1532 (1%) 1788:1828 (1%)	view
12	x 2	ROOT ROOT	memory.c memory.c	632:643 (<1%) 675:686 (<1%)	view
11	x 2	ROOT ROOT	vmstat.c vmstat.c	576:603 (<1%) 644:671 (<1%)	view
11	x 2	damon damon	dbgfs.c dbgfs.c	748:763 (1%) 838:853 (1%)	view
11	x 2	ROOT ROOT	swapfile.c swapfile.c	954:966 (<1%) 971:983 (<1%)	view
10	x 2	ROOT ROOT	ksm.c ksm.c	1594:1629 (<1%) 1827:1862 (<1%)	view
10	x 2	ROOT ROOT	madvise.c madvise.c	407:417 (1%) 493:503 (1%)	view
10	x 2	ROOT ROOT	page-writeback.c page-writeback.c	1754:1763 (<1%) 1783:1792 (<1%)	view
10	x 2	ROOT ROOT	readahead.c readahead.c	674:687 (3%) 697:709 (3%)	view
9	x 2	ROOT ROOT	memcontrol.c memcontrol.c	4182:4191 (<1%) 4269:4278 (<1%)	view
9	x 2	ROOT ROOT	frontswap.c frontswap.c	251:260 (4%) 300:309 (4%)	view
9	x 2	ROOT ROOT	shmem.c truncate.c	979:990 (<1%) 406:416 (2%)	view
9	x 2	ROOT ROOT	mremap.c mremap.c	304:320 (1%) 351:367 (1%)	view
9	x 2	ROOT ROOT	compaction.c compaction.c	2645:2657 (<1%) 2673:2687 (<1%)	view
9	x 2	ROOT ROOT	vmstat.c vmstat.c	2133:2143 (<1%) 2183:2195 (<1%)	view
9	x 2	kasan kasan	init.c init.c	191:199 (3%) 253:261 (3%)	view
9	x 2	ROOT ROOT	z3fold.c zbud.c	1428:1438 (<1%) 446:456 (3%)	view
9	x 2	ROOT ROOT	userfaultfd.c userfaultfd.c	86:96 (2%) 196:205 (2%)	view
9	x 2	ROOT ROOT	rmap.c rmap.c	1457:1471 (<1%) 1761:1775 (<1%)	view
8	x 2	ROOT ROOT	page_isolation.c page_isolation.c	190:199 (6%) 214:223 (6%)	view
8	x 2	ROOT ROOT	gup.c gup.c	1584:1591 (<1%) 1736:1743 (<1%)	view
8	x 2	ROOT ROOT	zsmalloc.c zsmalloc.c	1244:1252 (<1%) 1302:1310 (<1%)	view
8	x 2	ROOT ROOT	khugepaged.c khugepaged.c	1728:1736 (<1%) 1771:1778 (<1%)	view
8	x 2	ROOT ROOT	bootmem_info.c bootmem_info.c	41:52 (13%) 76:86 (13%)	view
8	x 2	ROOT ROOT	rmap.c rmap.c	489:498 (<1%) 533:542 (<1%)	view
8	x 2	ROOT ROOT	vmalloc.c vmalloc.c	3818:3825 (<1%) 3868:3875 (<1%)	view
8	x 2	damon damon	paddr.c vaddr.c	251:261 (4%) 734:745 (1%)	view
8	x 2	ROOT ROOT	percpu.c percpu.c	372:381 (<1%) 427:436 (<1%)	view
8	x 2	ROOT ROOT	z3fold.c z3fold.c	891:899 (<1%) 936:944 (<1%)	view
8	x 2	ROOT ROOT	gup.c gup.c	1465:1473 (<1%) 1527:1535 (<1%)	view
8	x 2	ROOT ROOT	mmu_notifier.c mmu_notifier.c	366:375 (1%) 386:395 (1%)	view
8	x 2	ROOT ROOT	shmem.c truncate.c	965:975 (<1%) 392:402 (2%)	view
8	x 2	damon damon	dbgfs.c dbgfs.c	132:142 (1%) 460:470 (1%)	view
7	x 2	damon damon	dbgfs.c dbgfs.c	462:470 (1%) 588:596 (1%)	view
7	x 2	ROOT ROOT	ksm.c ksm.c	2839:2847 (<1%) 3110:3118 (<1%)	view
7	x 2	damon damon	core-test.h vaddr-test.h	169:179 (4%) 98:108 (4%)	view
7	x 2	damon damon	dbgfs.c dbgfs.c	144:151 (1%) 478:485 (1%)	view
7	x 2	damon damon	dbgfs.c dbgfs.c	134:142 (1%) 588:596 (1%)	view
7	x 2	ROOT ROOT	rmap.c rmap.c	499:514 (<1%) 558:566 (<1%)	view
7	x 2	ROOT ROOT	page_idle.c page_idle.c	119:127 (5%) 164:172 (5%)	view
7	x 2	ROOT ROOT	memblock.c memblock.c	599:606 (<1%) 732:739 (<1%)	view

Duplicated Units

The list of top 8 duplicated units.

See data for all 8 unit duplicates...

Size	#	Folders	Files	Lines	Code
11	x 2	damon damon	paddr.c vaddr.c	250:262 733:746	view
9	x 2	ROOT ROOT	mincore.c madvise.c	157:172 566:581	view
6	x 2	ROOT ROOT	mmap.c nommu.c	3707:3715 1801:1809	view
6	x 2	ROOT ROOT	mmap.c nommu.c	3728:3736 1822:1830	view
6	x 2	ROOT ROOT	zbud.c z3fold.c	527:533 1700:1706	view
6	x 2	ROOT ROOT	page_alloc.c page_alloc.c	2350:2356 2372:2378	view
6	x 2	ROOT ROOT	gup.c gup.c	2075:2081 2083:2089	view
6	x 2	ROOT ROOT	gup.c gup.c	2434:2440 2442:2448	view