Eric Lee / smarc-fsl-linux-kernel

17 Oct, 2007

1 commit

  • dcca2bde4   During VM oom condition, kill all threads in process group ... Browse Code »

    We have had complaints where a threaded application is left in a bad state
    after one of it's threads is killed when we hit a VM: out_of_memory
    condition.

    Killing just one of the process threads can leave the application in a bad
    state, whereas killing the entire process group would allow for the
    application to restart, or be otherwise handled, and makes it very obvious
    that something has gone wrong.

    This change allows the entire process group to be taken down, rather
    than just the one thread.

    Signed-off-by: Will Schmidt
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Haavard Skinnemoen
    Cc: Mikael Starvik
    Cc: David Howells
    Cc: Andi Kleen
    Cc: "Luck, Tony"
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Cc: Ralf Baechle
    Cc: Kyle McMartin
    Cc: Matthew Wilcox
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Kazumoto Kojima
    Cc: Richard Curnow
    Cc: William Lee Irwin III
    Cc: "David S. Miller"
    Cc: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Will Schmidt
     

20 Jul, 2007

1 commit

  • 83c54070e   mm: fault feedback #2 ... Browse Code »

    This patch completes Linus's wish that the fault return codes be made into
    bit flags, which I agree makes everything nicer. This requires requires
    all handle_mm_fault callers to be modified (possibly the modifications
    should go further and do things like fault accounting in handle_mm_fault --
    however that would be for another patch).

    [akpm@linux-foundation.org: fix alpha build]
    [akpm@linux-foundation.org: fix s390 build]
    [akpm@linux-foundation.org: fix sparc build]
    [akpm@linux-foundation.org: fix sparc64 build]
    [akpm@linux-foundation.org: fix ia64 build]
    Signed-off-by: Nick Piggin
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Bryan Wu
    Cc: Mikael Starvik
    Cc: David Howells
    Cc: Yoshinori Sato
    Cc: "Luck, Tony"
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Cc: Greg Ungerer
    Cc: Matthew Wilcox
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Kazumoto Kojima
    Cc: Richard Curnow
    Cc: William Lee Irwin III
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Cc: Miles Bader
    Cc: Chris Zankel
    Acked-by: Kyle McMartin
    Acked-by: Haavard Skinnemoen
    Acked-by: Ralf Baechle
    Acked-by: Andi Kleen
    Signed-off-by: Andrew Morton
    [ Still apparently needs some ARM and PPC loving - Linus ]
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

12 Feb, 2007

1 commit

08 Dec, 2006

1 commit

  • 6edaf68a8   [PATCH] mm: arch do_page_fault() vs in_atomic() ... Browse Code »

    In light of the recent pagefault and filemap_copy_from_user work I've gone
    through all the arch pagefault handlers to make sure the inc_preempt_count()
    'feature' works as expected.

    Several sections of code (including the new filemap_copy_from_user) rely on
    the fact that faults do not take locks under increased preempt count.

    arch/x86_64 - good
    arch/powerpc - good
    arch/cris - fixed
    arch/i386 - good
    arch/parisc - fixed
    arch/sh - good
    arch/sparc - good
    arch/s390 - good
    arch/m68k - fixed
    arch/ppc - good
    arch/alpha - fixed
    arch/mips - good
    arch/sparc64 - good
    arch/ia64 - good
    arch/arm - fixed
    arch/um - good
    arch/avr32 - good
    arch/h8300 - NA
    arch/m32r - good
    arch/v850 - good
    arch/frv - fixed
    arch/m68knommu - NA
    arch/arm26 - fixed
    arch/sh64 - fixed
    arch/xtensa - good

    Signed-off-by: Peter Zijlstra
    Acked-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Peter Zijlstra
     

01 Oct, 2006

1 commit

22 Mar, 2006

1 commit

  • 7835e98b2   [PATCH] remove set_page_count() outside mm/ ... Browse Code »

    set_page_count usage outside mm/ is limited to setting the refcount to 1.
    Remove set_page_count from outside mm/, and replace those users with
    init_page_count() and set_page_refcounted().

    This allows more debug checking, and tighter control on how code is allowed
    to play around with page->_count.

    Signed-off-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

07 Nov, 2005

1 commit

30 Oct, 2005

1 commit

  • 872fec16d   [PATCH] mm: init_mm without ptlock ... Browse Code »

    First step in pushing down the page_table_lock. init_mm.page_table_lock has
    been used throughout the architectures (usually for ioremap): not to serialize
    kernel address space allocation (that's usually vmlist_lock), but because
    pud_alloc,pmd_alloc,pte_alloc_kernel expect caller holds it.

    Reverse that: don't lock or unlock init_mm.page_table_lock in any of the
    architectures; instead rely on pud_alloc,pmd_alloc,pte_alloc_kernel to take
    and drop it when allocating a new one, to check lest a racing task already
    did. Similarly no page_table_lock in vmalloc's map_vm_area.

    Some temporary ugliness in __pud_alloc and __pmd_alloc: since they also handle
    user mms, which are converted only by a later patch, for now they have to lock
    differently according to whether or not it's init_mm.

    If sources get muddled, there's a danger that an arch source taking
    init_mm.page_table_lock will be mixed with common source also taking it (or
    neither take it). So break the rules and make another change, which should
    break the build for such a mismatch: remove the redundant mm arg from
    pte_alloc_kernel (ppc64 scrapped its distinct ioremap_mm in 2.6.13).

    Exceptions: arm26 used pte_alloc_kernel on user mm, now pte_alloc_map; ia64
    used pte_alloc_map on init_mm, now pte_alloc_kernel; parisc had bad args to
    pmd_alloc and pte_alloc_kernel in unused USE_HPPA_IOREMAP code; ppc64
    map_io_page forgot to unlock on failure; ppc mmu_mapin_ram and ppc64 im_free
    took page_table_lock for no good reason.

    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hugh Dickins
     

04 Aug, 2005

1 commit

28 Jul, 2005

1 commit

  • 4f18cfbf0   [PATCH] CRIS update: mm ... Browse Code »

    Memory management patches.

    * SMP support.
    * Non-executable stack (on v32).
    * 4-level page tables.
    * Added simple Thread Local Storage support.

    Signed-off-by: Mikael Starvik
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mikael Starvik
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds