linux-kernel - [patch -mm 0/9 v2] oom killer rewrite

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Date:	Mon, 15 Feb 2010 14:19:57 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Rik van Riel <riel@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Nick Piggin <npiggin@...e.de>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Lubos Lunak <l.lunak@...e.cz>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [patch -mm 0/9 v2] oom killer rewrite

This patchset is a rewrite of the out of memory killer to address several
issues that have been raised recently.  The most notable change is a
complete rewrite of the badness heuristic that determines which task is
killed; the goal was to make it as simple and predictable as possible
while still addressing issues that plague the VM.

Changes from version 1:

 - updated to mmotm-2010-02-11-21-55

 - when iterating the tasklist for mempolicy-constrained oom conditions,
   the node of the cpu that a MPOL_F_LOCAL task is running on is now
   intersected with the page allocator's nodemask to determine whether it
   should be a candidate for oom kill.

 - added: [patch 4/9] oom: remove compulsory panic_on_oom mode

 - /proc/pid/oom_score_adj was added to prevent ABI breakage for
   applications using /proc/pid/oom_adj.  /proc/pid/oom_adj may still be
   used with the old range but it is then scaled to oom_score_adj units
   for a rough linear approximation.  There is no loss in functionality
   from the old interface.

 - added: [patch 6/9] oom: deprecate oom_adj tunable

This patchset is based on mmotm-2010-02-11-21-55 because of the following
dependencies:

	[patch 5/9] oom: badness heuristic rewrite:
		mm-count-swap-usage.patch

	[patch 7/9] oom: replace sysctls with quick mode:
		sysctl-clean-up-vm-related-variable-delcarations.patch

To apply to mainline, download 2.6.33-rc8 and apply

	mm-clean-up-mm_counter.patch
	mm-avoid-false-sharing-of-mm_counter.patch
	mm-avoid-false_sharing-of-mm_counter-checkpatch-fixes.patch
	mm-count-swap-usage.patch
	mm-count-swap-usage-checkpatch-fixes.patch
	mm-introduce-dump_page-and-print-symbolic-flag-names.patch
	sysctl-clean-up-vm-related-variable-declarations.patch
	sysctl-clean-up-vm-related-variable-declarations-fix.patch

from http://userweb.kernel.org/~akpm/mmotm/broken-out.tar.gz first.
---
 Documentation/feature-removal-schedule.txt |   30 +
 Documentation/filesystems/proc.txt         |  100 +++---
 Documentation/sysctl/vm.txt                |   71 +---
 fs/proc/base.c                             |  106 ++++++
 include/linux/mempolicy.h                  |   13 
 include/linux/oom.h                        |   24 +
 include/linux/sched.h                      |    3 
 kernel/fork.c                              |    1 
 kernel/sysctl.c                            |   15 
 mm/mempolicy.c                             |   39 ++
 mm/oom_kill.c                              |  479 ++++++++++++++---------------
 mm/page_alloc.c                            |    3 
 12 files changed, 553 insertions(+), 331 deletions(-)
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