Eric Lee / smarc-fsl-linux-kernel

20 Jul, 2007

13 commits

  • dd00cc486   some kmalloc/memset ->kzalloc (tree wide) ... Browse Code »

    Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

    Here is a short excerpt of the semantic patch performing
    this transformation:

    @@
    type T2;
    expression x;
    identifier f,fld;
    expression E;
    expression E1,E2;
    expression e1,e2,e3,y;
    statement S;
    @@

    x =
    - kmalloc
    + kzalloc
    (E1,E2)
    ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
    - memset((T2)x,0,E1);

    @@
    expression E1,E2,E3;
    @@

    - kzalloc(E1 * E2,E3)
    + kcalloc(E1,E2,E3)

    [akpm@linux-foundation.org: get kcalloc args the right way around]
    Signed-off-by: Yoann Padioleau
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Acked-by: Russell King
    Cc: Bryan Wu
    Acked-by: Jiri Slaby
    Cc: Dave Airlie
    Acked-by: Roland Dreier
    Cc: Jiri Kosina
    Acked-by: Dmitry Torokhov
    Cc: Benjamin Herrenschmidt
    Acked-by: Mauro Carvalho Chehab
    Acked-by: Pierre Ossman
    Cc: Jeff Garzik
    Cc: "David S. Miller"
    Acked-by: Greg KH
    Cc: James Bottomley
    Cc: "Antonino A. Daplas"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yoann Padioleau
     
  • f0a594c1c   update checkpatch.pl to version 0.08 ... Browse Code »

    This version brings a number of new checks, and a number of bug
    fixes. Of note:

    - warnings for multiple assignments per line
    - warnings for multiple declarations per line
    - checks for single statement blocks with braces

    This patch includes an update for feature-removal-schedule.txt to
    better target checks.

    Andy Whitcroft (12):
    Version: 0.08
    only apply printk checks where there is a string literal
    allow suppression of errors for when no patch is found
    warn about multiple assignments
    warn on declaration of multiple variables
    check for kfree() with needless null check
    check for single statement braced blocks
    check for aggregate initialisation on the next line
    handle the => operator
    check for spaces between function name and open parenthesis
    move to explicit Check: entries in feature-removal-schedule.txt
    handle pointer attributes

    Signed-off-by: Andy Whitcroft
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andy Whitcroft
     
  • 4b8a8b812   Typo: fro -> from ... Browse Code »

    Signed-off-by: Rolf Eike Beer
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rolf Eike Beer
     
  • bb90110dc   coredump masking: documentation for /proc/pid/coredump_filter ... Browse Code »

    This patch adds the documentation for /proc//coredump_filter.

    Signed-off-by: Hidehiro Kawai
    Cc: Alan Cox
    Cc: David Howells
    Cc: Hugh Dickins
    Cc: Nick Piggin
    Cc: "Randy.Dunlap"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kawai, Hidehiro
     
  • 86fd6dfc0   docbook: don't reference file without kernel-doc ... Browse Code »

    Remove include/linux/rmap.h from kernel-api.tmpl since it no longer
    contains kernel-doc. Fixes this warning:

    Warning(linux-2.6.22//include/linux/rmap.h): no structured comments found

    Signed-off-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy Dunlap
     
  • 2ac534bc1   kernel-doc: add tools doc in Makefile ... Browse Code »

    Add kernel-doc tools info in Makefile.

    Signed-off-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy Dunlap
     
  • bdf4c48af   audit: rework execve audit ... Browse Code »

    The purpose of audit_bprm() is to log the argv array to a userspace daemon at
    the end of the execve system call. Since user-space hasn't had time to run,
    this array is still in pristine state on the process' stack; so no need to
    copy it, we can just grab it from there.

    In order to minimize the damage to audit_log_*() copy each string into a
    temporary kernel buffer first.

    Currently the audit code requires that the full argument vector fits in a
    single packet. So currently it does clip the argv size to a (sysctl) limit,
    but only when execve auditing is enabled.

    If the audit protocol gets extended to allow for multiple packets this check
    can be removed.

    Signed-off-by: Peter Zijlstra
    Signed-off-by: Ollie Wild
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Peter Zijlstra
     
  • 9e367d859   jprobes: remove JPROBE_ENTRY() ... Browse Code »

    AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything
    useful - so remove it ..

    I've left a do-nothing version so that out-of-tree jprobes code will still
    compile without modifications.

    Signed-off-by: Michael Ellerman
    Cc: Prasanna S Panchamukhi
    Acked-by: Ananth N Mavinakayanahalli
    Cc: Anil S Keshavamurthy
    Cc: David S. Miller
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael Ellerman
     
  • a0a998350   gpio calls don't need i/o barriers ... Browse Code »

    Clarify that drivers using the GPIO operations don't need to issue io
    barrier instructions themselves. Previously this wasn't clear, and at
    least one platform assumed otherwise (and would thus break various
    otherwise-portable drivers which don't issue barriers).

    Signed-off-by: David Brownell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Brownell
     
  • b10d91174   PM: introduce hibernation and suspend notifiers ... Browse Code »

    Make it possible to register hibernation and suspend notifiers, so that
    subsystems can perform hibernation-related or suspend-related operations that
    should not be carried out by device drivers' .suspend() and .resume()
    routines.

    [akpm@linux-foundation.org: build fixes]
    [akpm@linux-foundation.org: cleanups]
    Signed-off-by: Rafael J. Wysocki
    Acked-by: Pavel Machek
    Cc: Nigel Cunningham
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rafael J. Wysocki
     
  • d0217ac04   mm: fault feedback #1 ... Browse Code »

    Change ->fault prototype. We now return an int, which contains
    VM_FAULT_xxx code in the low byte, and FAULT_RET_xxx code in the next byte.
    FAULT_RET_ code tells the VM whether a page was found, whether it has been
    locked, and potentially other things. This is not quite the way he wanted
    it yet, but that's changed in the next patch (which requires changes to
    arch code).

    This means we no longer set VM_CAN_INVALIDATE in the vma in order to say
    that a page is locked which requires filemap_nopage to go away (because we
    can no longer remain backward compatible without that flag), but we were
    going to do that anyway.

    struct fault_data is renamed to struct vm_fault as Linus asked. address
    is now a void __user * that we should firmly encourage drivers not to use
    without really good reason.

    The page is now returned via a page pointer in the vm_fault struct.

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

    Nick Piggin
     
  • ed2f2f9b3   Document ->page_mkwrite() locking ... Browse Code »

    There seems to be very little documentation about this callback in general.
    The locking in particular is a bit tricky, so it's worth having this in
    writing.

    Signed-off-by: Mark Fasheh
    Cc: Nick Piggin
    Cc: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mark Fasheh
     
  • 54cb8821d   mm: merge populate and nopage into fault (fixes nonlinear) ... Browse Code »

    Nonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes
    the virtual address -> file offset differently from linear mappings.

    ->populate is a layering violation because the filesystem/pagecache code
    should need to know anything about the virtual memory mapping. The hitch here
    is that the ->nopage handler didn't pass down enough information (ie. pgoff).
    But it is more logical to pass pgoff rather than have the ->nopage function
    calculate it itself anyway (because that's a similar layering violation).

    Having the populate handler install the pte itself is likewise a nasty thing
    to be doing.

    This patch introduces a new fault handler that replaces ->nopage and
    ->populate and (later) ->nopfn. Most of the old mechanism is still in place
    so there is a lot of duplication and nice cleanups that can be removed if
    everyone switches over.

    The rationale for doing this in the first place is that nonlinear mappings are
    subject to the pagefault vs invalidate/truncate race too, and it seemed stupid
    to duplicate the synchronisation logic rather than just consolidate the two.

    After this patch, MAP_NONBLOCK no longer sets up ptes for pages present in
    pagecache. Seems like a fringe functionality anyway.

    NOPAGE_REFAULT is removed. This should be implemented with ->fault, and no
    users have hit mainline yet.

    [akpm@linux-foundation.org: cleanup]
    [randy.dunlap@oracle.com: doc. fixes for readahead]
    [akpm@linux-foundation.org: build fix]
    Signed-off-by: Nick Piggin
    Signed-off-by: Randy Dunlap
    Cc: Mark Fasheh
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

19 Jul, 2007

27 commits