artulab.com Git - openbsd/commit

author	semarie <semarie@openbsd.org>
	Fri, 29 Jul 2022 17:47:11 +0000 (17:47 +0000)
committer	semarie <semarie@openbsd.org>
	Fri, 29 Jul 2022 17:47:11 +0000 (17:47 +0000)
commit	02de433d8c4801712cfa33b1092e7f2c411d534e
tree	57269609abb54dd3b61179e8b87f987d2ac66f69	tree \| snapshot
parent	f942c791086abf2997c7e1a44c092ad6ca50947a	commit \| diff

Replace the swap extent(9) usage by a blist data structure.

It makes uvm_swap_free() faster: extents have a cost of O(n*n) which doesn't
really scale with gigabytes of swap.

Based on initial work from mpi@
The blist implementation comes from DragonFlyBSD.

The diff adds also a ddb(4) 'show swap' command to show the blist and help
debugging, and fix some off-by-one in size printed during hibernate.

ok mpi@

19 files changed:

regress/sys/uvm/blist/Makefile	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-1.in	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-1.out	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-2.in	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-2.out	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-3.in	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-3.out	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-4.in	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-4.out	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-5.in	[new file with mode: 0644]	blob
regress/sys/uvm/blist/test-5.out	[new file with mode: 0644]	blob
share/man/man4/ddb.4		diff \| blob \| history
sys/conf/files		diff \| blob \| history
sys/ddb/db_command.c		diff \| blob \| history
sys/ddb/db_interface.h		diff \| blob \| history
sys/kern/subr_blist.c	[new file with mode: 0644]	blob
sys/kern/subr_hibernate.c		diff \| blob \| history
sys/sys/blist.h	[new file with mode: 0644]	blob
sys/uvm/uvm_swap.c		diff \| blob \| history

OpenBSD src

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by Ahmet Artu Yildirim