Eric Lee / smarc-fsl-linux-kernel

06 Jan, 2009

1 commit

  • c61c25eb0   parisc: fix kernel crash (protection id trap) when compiling ruby1.9 ... Browse Code »

    On Wed, Dec 17, 2008 at 11:46:05PM +0100, Helge Deller wrote:
    >

    Honestly, I can't decide whether to apply this. It really should never
    happen in the kernel, since the kernel can guarantee it won't get the
    access rights failure (highest privilege level, and can set %sr and
    %protid to whatever it wants.)

    It really genuinely is a bug that probably should panic the kernel. The
    only precedent I can easily see is x86 fixing up a bad iret with a
    general protection fault, which is more or less analogous to code 27
    here.

    On the other hand, taking the exception on a userspace access really
    isn't all that critical, and there's fundamentally little reason for the
    kernel not to SIGSEGV the process, and continue...

    Argh.

    (btw, I've instrumented my do_sys_poll with a pile of assertions that
    %cr8 << 1 == %sr3 == current->mm.context... let's see if where we're
    getting corrupted is deterministic, though, I would guess that it won't
    be.)

    Signed-off-by: Kyle McMartin

    Kyle McMartin
     

25 Jul, 2008

2 commits

  • 9109fb7b3   mm: drop unneeded pgdat argument from free_area_init_node() ... Browse Code »

    free_area_init_node() gets passed in the node id as well as the node
    descriptor. This is redundant as the function can trivially get the node
    descriptor itself by means of NODE_DATA() and the node's id.

    I checked all the users and NODE_DATA() seems to be usable everywhere
    from where this function is called.

    Signed-off-by: Johannes Weiner
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     
  • b61bfa3c4   mm: move bootmem descriptors definition to a single place ... Browse Code »

    There are a lot of places that define either a single bootmem descriptor or an
    array of them. Use only one central array with MAX_NUMNODES items instead.

    Signed-off-by: Johannes Weiner
    Acked-by: Ralf Baechle
    Cc: Ingo Molnar
    Cc: Richard Henderson
    Cc: Russell King
    Cc: Tony Luck
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Kyle McMartin
    Cc: Paul Mackerras
    Cc: Paul Mundt
    Cc: David S. Miller
    Cc: Yinghai Lu
    Cc: Christoph Lameter
    Cc: Mel Gorman
    Cc: Andy Whitcroft
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     

26 Jun, 2008

1 commit

13 Jun, 2008

1 commit

16 May, 2008

1 commit

  • 713c0515a   Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
    arch/parisc/kernel/perf_asm.S: build fix
    parisc: remove -traditional from assembler flags
    parisc: use conditional macro for 64-bit wide ops
    parisc: Remove ioctl.h content picked up from .
    arch/parisc/kernel/unaligned.c: use time_* macros
    parisc: remove redundant display of free swap space in show_mem()
    drivers/parisc: replace remaining __FUNCTION__ occurrences
    parisc: replace remaining __FUNCTION__ occurrences
    parisc: new termios definitions
    parisc: fix trivial section name warnings

    Linus Torvalds
     

15 May, 2008

1 commit

  • b64af9b54   parisc: remove redundant display of free swap space in show_mem() ... Browse Code »

    show_mem() has no need to print the amount of free swap space manually because
    show_free_areas() does this already and is called by the former.

    The two outputs only differ in text formatting:

    printk("Free swap = %lukB\n", ...);
    printk("Free swap: %6ldkB\n", ...);

    Signed-off-by: Johannes Weiner
    Cc: Kyle McMartin
    Cc: Matthew Wilcox
    Cc: Grant Grundler
    Signed-off-by: Andrew Morton
    Signed-off-by: Kyle McMartin

    Johannes Weiner
     

13 May, 2008

1 commit

  • 4413a0f63   parisc: fix DISCONTIGMEM compile breakage ... Browse Code »

    PA-RISC to aid debugging prints out the zonelists setup by the system. A
    bad call to node_zonelist() breaks at compile-time. This patch fixes it.

    Signed-off-by: Mel Gorman
    Cc: Christoph Lameter
    Cc: Lee Schermerhorn
    Cc: Kyle McMartin
    Cc: Grant Grundler
    Cc: James Bottomley
    Cc: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mel Gorman
     

28 Apr, 2008

2 commits

  • dd1a239f6   mm: have zonelist contains structs with both a zone pointer and zone_idx ... Browse Code »

    Filtering zonelists requires very frequent use of zone_idx(). This is costly
    as it involves a lookup of another structure and a substraction operation. As
    the zone_idx is often required, it should be quickly accessible. The node idx
    could also be stored here if it was found that accessing zone->node is
    significant which may be the case on workloads where nodemasks are heavily
    used.

    This patch introduces a struct zoneref to store a zone pointer and a zone
    index. The zonelist then consists of an array of these struct zonerefs which
    are looked up as necessary. Helpers are given for accessing the zone index as
    well as the node index.

    [kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]
    [hugh@veritas.com: mm-have-zonelist: fix memcg ooms]
    [hugh@veritas.com: just return do_try_to_free_pages]
    [hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]
    Signed-off-by: Mel Gorman
    Acked-by: Christoph Lameter
    Acked-by: David Rientjes
    Signed-off-by: Lee Schermerhorn
    Cc: KAMEZAWA Hiroyuki
    Cc: Mel Gorman
    Cc: Christoph Lameter
    Cc: Nick Piggin
    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mel Gorman
     
  • 54a6eb5c4   mm: use two zonelist that are filtered by GFP mask ... Browse Code »

    Currently a node has two sets of zonelists, one for each zone type in the
    system and a second set for GFP_THISNODE allocations. Based on the zones
    allowed by a gfp mask, one of these zonelists is selected. All of these
    zonelists consume memory and occupy cache lines.

    This patch replaces the multiple zonelists per-node with two zonelists. The
    first contains all populated zones in the system, ordered by distance, for
    fallback allocations when the target/preferred node has no free pages. The
    second contains all populated zones in the node suitable for GFP_THISNODE
    allocations.

    An iterator macro is introduced called for_each_zone_zonelist() that interates
    through each zone allowed by the GFP flags in the selected zonelist.

    Signed-off-by: Mel Gorman
    Acked-by: Christoph Lameter
    Signed-off-by: Lee Schermerhorn
    Cc: KAMEZAWA Hiroyuki
    Cc: Mel Gorman
    Cc: Christoph Lameter
    Cc: Hugh Dickins
    Cc: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mel Gorman
     

08 Feb, 2008

1 commit

  • 72a7fe396   Introduce flags for reserve_bootmem() ... Browse Code »

    This patchset adds a flags variable to reserve_bootmem() and uses the
    BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions
    between crashkernel area and already used memory.

    This patch:

    Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE.
    If that flag is set, the function returns with -EBUSY if the memory already
    has been reserved in the past. This is to avoid conflicts.

    Because that code runs before SMP initialisation, there's no race condition
    inside reserve_bootmem_core().

    [akpm@linux-foundation.org: coding-style fixes]
    [akpm@linux-foundation.org: fix powerpc build]
    Signed-off-by: Bernhard Walle
    Cc:
    Cc: "Eric W. Biederman"
    Cc: Vivek Goyal
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Bernhard Walle
     

21 Oct, 2007

1 commit

  • cfa76f024   Merge branch 'master' of hera.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6 ... Browse Code »

    * 'master' of hera.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (29 commits)
    [PARISC] fix uninitialized variable warning in asm/rtc.h
    [PARISC] Port checkstack.pl to parisc
    [PARISC] Make palo target work when $obj != $src
    [PARISC] Zap unused variable warnings in pci.c
    [PARISC] Fix tests in palo target
    [PARISC] Fix palo target
    [PARISC] Restore palo target
    [PARISC] Attempt to clean up parisc/Makefile
    [PARISC] Fix infinite loop in /proc/iomem
    [PARISC] Quiet sysfs_create_link __must_check warnings in pdc_stable
    [PARISC] Squelch pci_enable_device __must_check warning in superio
    [PARISC] Kill off broken irqstack code
    [PARISC] Remove hardcoded uses of PAGE_SIZE
    [PARISC] Clean up pointless ASM_PAGE_SIZE_DIV use
    [PARISC] Kill off the last vestiges of ASM_PAGE_SIZE
    [PARISC] Kill off ASM_PAGE_SIZE use
    [PARISC] Beautify parisc vmlinux.lds.S
    [PARISC] Clean up a resource_size_t warning in sba_iommu
    [PARISC] Kill incorrect cast warning in unwinder
    [PARISC] Kill zone_to_nid printk warning
    ...

    Fixed trivial conflict in include/asm-parisc/tlbflush.h manually

    Linus Torvalds
     

20 Oct, 2007

1 commit

  • 19c5870c0   Use helpers to obtain task pid in printks (arch code) ... Browse Code »

    One of the easiest things to isolate is the pid printed in kernel log.
    There was a patch, that made this for arch-independent code, this one makes
    so for arch/xxx files.

    It took some time to cross-compile it, but hopefully these are all the
    printks in arch code.

    Signed-off-by: Alexey Dobriyan
    Signed-off-by: Pavel Emelyanov
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

18 Oct, 2007

1 commit

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
     

23 May, 2007

1 commit

27 Feb, 2007

1 commit

  • b0138a6cb   Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6 ... Browse Code »

    * master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits)
    [PARISC] Use symbolic last syscall in __NR_Linux_syscalls
    [PARISC] Add missing statfs64 and fstatfs64 syscalls
    Revert "[PARISC] Optimize TLB flush on SMP systems"
    [PARISC] Compat signal fixes for 64-bit parisc
    [PARISC] Reorder syscalls to match unistd.h
    Revert "[PATCH] make kernel/signal.c:kill_proc_info() static"
    [PARISC] fix sys_rt_sigqueueinfo
    [PARISC] fix section mismatch warnings in harmony sound driver
    [PARISC] do not export get_register/set_register
    [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code
    [PARISC] convert to use CONFIG_64BIT instead of __LP64__
    [PARISC] use CONFIG_64BIT instead of __LP64__
    [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro
    [PARISC] more ENTRY(), ENDPROC(), END() conversions
    [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc
    [PARISC] Fixes /proc/cpuinfo cache output on B160L
    [PARISC] implement standard ENTRY(), END() and ENDPROC()
    [PARISC] kill ENTRY_SYS_CPUS
    [PARISC] clean up debugging printks in smp.c
    [PARISC] factor syscall_restart code out of do_signal
    ...

    Fix conflict in include/linux/sched.h due to kill_proc_info() being made
    publicly available to PARISC again.

    Linus Torvalds
     

17 Feb, 2007

3 commits

13 Feb, 2007

2 commits

12 Feb, 2007

1 commit

09 Dec, 2006

1 commit

08 Dec, 2006

6 commits

04 Oct, 2006

2 commits

26 Sep, 2006

2 commits

  • 89fa30242   [PATCH] NUMA: Add zone_to_nid function ... Browse Code »

    There are many places where we need to determine the node of a zone.
    Currently we use a difficult to read sequence of pointer dereferencing.
    Put that into an inline function and use throughout VM. Maybe we can find
    a way to optimize the lookup in the future.

    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     
  • f06a96844   [PATCH] reduce MAX_NR_ZONES: fix MAX_NR_ZONES array initializations ... Browse Code »

    Fix array initialization in lots of arches

    The number of zones may now be reduced from 4 to 2 for many arches. Fix the
    array initialization for the zones array for all architectures so that it is
    not initializing a fixed number of elements.

    Signed-off-by: Christoph Lameter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

02 Jul, 2006

1 commit

01 Jul, 2006

1 commit

22 Apr, 2006

3 commits