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Message-ID: <20100901190859.GA20316@random.random> Date: Wed, 1 Sep 2010 21:08:59 +0200 From: Andrea Arcangeli <aarcange@...hat.com> To: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org Cc: Marcelo Tosatti <mtosatti@...hat.com>, Adam Litke <agl@...ibm.com>, Avi Kivity <avi@...hat.com>, Izik Eidus <ieidus@...hat.com>, Hugh Dickins <hugh.dickins@...cali.co.uk>, Nick Piggin <npiggin@...e.de>, Rik van Riel <riel@...hat.com>, Mel Gorman <mel@....ul.ie>, Dave Hansen <dave@...ux.vnet.ibm.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Ingo Molnar <mingo@...e.hu>, Mike Travis <travis@....com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Christoph Lameter <cl@...ux-foundation.org>, Chris Wright <chrisw@...s-sol.org>, bpicco@...hat.com, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Balbir Singh <balbir@...ux.vnet.ibm.com>, "Michael S. Tsirkin" <mst@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Johannes Weiner <hannes@...xchg.org>, Daisuke Nishimura <nishimura@....nes.nec.co.jp>, Chris Mason <chris.mason@...cle.com>, Borislav Petkov <bp@...en8.de> Subject: Transparent Hugepage Support #30 http://www.linux-kvm.org/wiki/images/9/9e/2010-forum-thp.pdf http://git.kernel.org/?p=linux/kernel/git/andrea/aa.git;a=shortlog first: git clone git://git.kernel.org/pub/scm/linux/kernel/git/andrea/aa.git or first: git clone --reference linux-2.6 git://git.kernel.org/pub/scm/linux/kernel/git/andrea/aa.git later: git fetch; git checkout -f origin/master The tree is rebased and git pull won't work. http://www.kernel.org/pub/linux/kernel/people/andrea/patches/v2.6/2.6.36-rc3/transparent_hugepage-30/ http://www.kernel.org/pub/linux/kernel/people/andrea/patches/v2.6/2.6.36-rc3/transparent_hugepage-30.gz Diff #29 -> #30: b/compaction-migration-warning | 25 +++ Avoid MIGRATION config warning when COMPACTION is selected but numa and memhotplug aren't. do_swap_page-VM_FAULT_WRITE | 21 -- kvm-huge-spte-wrprotect | 48 ------ kvm-mmu-notifier-huge-spte | 29 --- root_anon_vma-anon_vma_lock | 208 --------------------------- root_anon_vma-avoid-ksm-hang | 30 --- root_anon_vma-bugchecks | 37 ---- root_anon_vma-in_vma | 27 --- root_anon_vma-ksm_refcount | 169 --------------------- root_anon_vma-lock_root | 127 ---------------- root_anon_vma-memory-compaction | 36 ---- root_anon_vma-mm_take_all_locks | 81 ---------- root_anon_vma-oldest_root | 81 ---------- root_anon_vma-refcount | 29 --- root_anon_vma-swapin | 91 ----------- root_anon_vma-use-root | 66 -------- root_anon_vma-vma_lock_anon_vma | 94 ------------ merged upstream. b/memcg_compound | 166 ++++++++++----------- b/memcg_compound_tail | 31 +--- b/memcg_consume_stock | 31 ++-- memcg_check_room | 88 ----------- memcg_oom | 34 ---- These had heavy rejects, the last two patches and other bits got removed. memcg code is rewritten so fast it's hard to justify to keep up with it. It's simpler and less time consuming to fix it just once than over and over again. Likely memcg in this release isn't too stable with THP on (it'll definitely work fine if you disable THP at compile time or at boot time with the kernel parameter). Especially all get_css/put_css will have to be re-audited after these new changes. For now it builds just fine and the basics to support THP and to show the direction are in. Nevertheless I welcome patches to fix this up. btw, memcg developers could already support THP inside memcg even if THP is not included yet without any sort of problem, so it's also partly up to them to want to support THP in memcg, but it's also perfectly ok to catch up with memcg externally, but it'd be also nice to know when memcg reaches a milestone and so when it's time to re-audit it all for THP. Full diffstat: Documentation/vm/transhuge.txt | 283 ++++ arch/alpha/include/asm/mman.h | 2 arch/mips/include/asm/mman.h | 2 arch/parisc/include/asm/mman.h | 2 arch/powerpc/mm/gup.c | 12 arch/x86/include/asm/kvm_host.h | 1 arch/x86/include/asm/paravirt.h | 23 arch/x86/include/asm/paravirt_types.h | 6 arch/x86/include/asm/pgtable-2level.h | 9 arch/x86/include/asm/pgtable-3level.h | 23 arch/x86/include/asm/pgtable.h | 149 ++ arch/x86/include/asm/pgtable_64.h | 28 arch/x86/include/asm/pgtable_types.h | 3 arch/x86/kernel/paravirt.c | 3 arch/x86/kernel/vm86_32.c | 1 arch/x86/kvm/mmu.c | 60 arch/x86/kvm/paging_tmpl.h | 4 arch/x86/mm/gup.c | 28 arch/x86/mm/pgtable.c | 66 + arch/xtensa/include/asm/mman.h | 2 fs/Kconfig | 2 fs/exec.c | 44 fs/proc/meminfo.c | 14 fs/proc/page.c | 14 include/asm-generic/mman-common.h | 2 include/asm-generic/pgtable.h | 130 + include/linux/compaction.h | 13 include/linux/gfp.h | 14 include/linux/huge_mm.h | 151 ++ include/linux/khugepaged.h | 66 + include/linux/ksm.h | 20 include/linux/kvm_host.h | 4 include/linux/memory_hotplug.h | 14 include/linux/mm.h | 114 + include/linux/mm_inline.h | 19 include/linux/mm_types.h | 3 include/linux/mmu_notifier.h | 66 + include/linux/mmzone.h | 1 include/linux/page-flags.h | 36 include/linux/sched.h | 1 include/linux/swap.h | 2 include/linux/vmstat.h | 4 kernel/fork.c | 12 kernel/futex.c | 55 mm/Kconfig | 40 mm/Makefile | 1 mm/compaction.c | 48 mm/huge_memory.c | 2212 ++++++++++++++++++++++++++++++++++ mm/hugetlb.c | 69 - mm/ksm.c | 53 mm/madvise.c | 8 mm/memcontrol.c | 138 +- mm/memory-failure.c | 2 mm/memory.c | 235 +++ mm/memory_hotplug.c | 14 mm/mempolicy.c | 14 mm/migrate.c | 12 mm/mincore.c | 7 mm/mmap.c | 5 mm/mmu_notifier.c | 20 mm/mprotect.c | 20 mm/mremap.c | 8 mm/oom_kill.c | 1 mm/page_alloc.c | 58 mm/pagewalk.c | 1 mm/rmap.c | 115 - mm/sparse.c | 4 mm/swap.c | 117 + mm/swap_state.c | 6 mm/swapfile.c | 2 mm/vmscan.c | 98 - mm/vmstat.c | 31 virt/kvm/iommu.c | 2 virt/kvm/kvm_main.c | 56 74 files changed, 4468 insertions(+), 437 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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