Eric Lee / smarc-fsl-linux-kernel

13 Jan, 2012

1 commit

06 Dec, 2011

1 commit

22 Nov, 2011

1 commit

01 Nov, 2011

1 commit

28 Sep, 2011

1 commit

  • 395cf9691   doc: fix broken references ... Browse Code »

    There are numerous broken references to Documentation files (in other
    Documentation files, in comments, etc.). These broken references are
    caused by typo's in the references, and by renames or removals of the
    Documentation files. Some broken references are simply odd.

    Fix these broken references, sometimes by dropping the irrelevant text
    they were part of.

    Signed-off-by: Paul Bolle
    Signed-off-by: Jiri Kosina

    Paul Bolle
     

30 Aug, 2011

1 commit

  • d4d7b2a11   remove remaining references to nfsservctl ... Browse Code »

    These were missed in commit f5b940997397 "All Arch: remove linkage
    for sys_nfsservctl system call" due to them having no sys_ prefix
    (presumably).

    Cc: NeilBrown
    Cc: linuxppc-dev@lists.ozlabs.org
    Cc: linux-parisc@vger.kernel.org
    Signed-off-by: Stephen Rothwell
    Acked-by: James Bottomley
    Signed-off-by: Linus Torvalds

    Stephen Rothwell
     

05 Aug, 2011

1 commit

01 Aug, 2011

1 commit

27 Jul, 2011

1 commit

  • 60063497a   atomic: use <linux/atomic.h> ... Browse Code »

    This allows us to move duplicated code in
    (atomic_inc_not_zero() for now) to

    Signed-off-by: Arun Sharma
    Reviewed-by: Eric Dumazet
    Cc: Ingo Molnar
    Cc: David Miller
    Cc: Eric Dumazet
    Acked-by: Mike Frysinger
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arun Sharma
     

24 Jul, 2011

1 commit

  • 66574cc05   modules: make arch's use default loader hooks ... Browse Code »

    This patch removes all the module loader hook implementations in the
    architecture specific code where the functionality is the same as that
    now provided by the recently added default hooks.

    Signed-off-by: Jonas Bonn
    Acked-by: Mike Frysinger
    Acked-by: Geert Uytterhoeven
    Tested-by: Michal Simek
    Signed-off-by: Rusty Russell

    Jonas Bonn
     

29 May, 2011

1 commit

  • 7b21fddd0   ns: Wire up the setns system call ... Browse Code »

    32bit and 64bit on x86 are tested and working. The rest I have looked
    at closely and I can't find any problems.

    setns is an easy system call to wire up. It just takes two ints so I
    don't expect any weird architecture porting problems.

    While doing this I have noticed that we have some architectures that are
    very slow to get new system calls. cris seems to be the slowest where
    the last system calls wired up were preadv and pwritev. avr32 is weird
    in that recvmmsg was wired up but never declared in unistd.h. frv is
    behind with perf_event_open being the last syscall wired up. On h8300
    the last system call wired up was epoll_wait. On m32r the last system
    call wired up was fallocate. mn10300 has recvmmsg as the last system
    call wired up. The rest seem to at least have syncfs wired up which was
    new in the 2.6.39.

    v2: Most of the architecture support added by Daniel Lezcano
    v3: ported to v2.6.36-rc4 by: Eric W. Biederman
    v4: Moved wiring up of the system call to another patch
    v5: ported to v2.6.39-rc6
    v6: rebased onto parisc-next and net-next to avoid syscall conflicts.
    v7: ported to Linus's latest post 2.6.39 tree.

    >  arch/blackfin/include/asm/unistd.h     |    3 ++-
    >  arch/blackfin/mach-common/entry.S      |    1 +
    Acked-by: Mike Frysinger

    Oh - ia64 wiring looks good.
    Acked-by: Tony Luck

    Signed-off-by: Eric W. Biederman
    Signed-off-by: Linus Torvalds

    Eric W. Biederman
     

25 May, 2011

1 commit

23 May, 2011

1 commit

22 May, 2011

1 commit

20 May, 2011

1 commit

  • a2d063ac2   extable, core_kernel_data(): Make sure all archs define _sdata ... Browse Code »
    43

    A new utility function (core_kernel_data()) is used to determine if a
    passed in address is part of core kernel data or not. It may or may not
    return true for RO data, but this utility must work for RW data.

    Thus both _sdata and _edata must be defined and continuous,
    without .init sections that may later be freed and replaced by
    volatile memory (memory that can be freed).

    This utility function is used to determine if data is safe from
    ever being freed. Thus it should return true for all RW global
    data that is not in a module or has been allocated, or false
    otherwise.

    Also change core_kernel_data() back to the more precise _sdata condition
    and document the function.

    Signed-off-by: Steven Rostedt
    Acked-by: Ralf Baechle
    Acked-by: Hirokazu Takata
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Matt Turner
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Cc: linux-m68k@lists.linux-m68k.org
    Cc: Kyle McMartin
    Cc: Helge Deller
    Cc: JamesE.J.Bottomley
    Link: http://lkml.kernel.org/r/1305855298.1465.19.camel@gandalf.stny.rr.com
    Signed-off-by: Ingo Molnar
    ----
    arch/alpha/kernel/vmlinux.lds.S | 1 +
    arch/m32r/kernel/vmlinux.lds.S | 1 +
    arch/m68k/kernel/vmlinux-std.lds | 2 ++
    arch/m68k/kernel/vmlinux-sun3.lds | 1 +
    arch/mips/kernel/vmlinux.lds.S | 1 +
    arch/parisc/kernel/vmlinux.lds.S | 3 +++
    kernel/extable.c | 12 +++++++++++-
    7 files changed, 20 insertions(+), 1 deletion(-)

    Steven Rostedt
     

16 Apr, 2011

7 commits

  • 2e7bad5f3   [PARISC] wire up syncfs syscall ... Browse Code »

    Cc: stable@kernel.org
    Signed-off-by: James Bottomley

    James Bottomley
     
  • a71aae4ce   [PARISC] wire up the fhandle syscalls ... Browse Code »

    Cc: stable@kernel.org
    Signed-off-by: James Bottomley

    James Bottomley
     
  • c3f957a22   [PARISC] wire up clock_adjtime syscall ... Browse Code »

    Cc: stable@kernel.org
    Signed-off-by: James Bottomley

    James Bottomley
     
  • 1824074b0   [PARISC] wire up fanotify syscalls ... Browse Code »

    Cc: stable@kernel.org
    Signed-off-by: James Bottomley

    James Bottomley
     
  • b7d458184   [PARISC] prevent speculative re-read on cache flush ... Browse Code »

    According to Appendix F, the TLB is the primary arbiter of speculation.
    Thus, if a page has a TLB entry, it may be speculatively read into the
    cache. On linux, this can cause us incoherencies because if we're about
    to do a disk read, we call get_user_pages() to do the flush/invalidate
    in user space, but we still potentially have the user TLB entries, and
    the cache could speculate the lines back into userspace (thus causing
    stale data to be used). This is fixed by purging the TLB entries before
    we flush through the tmpalias space. Now, the only way the line could
    be re-speculated is if the user actually tries to touch it (which is not
    allowed).

    Signed-off-by: James Bottomley

    James Bottomley
     
  • d7dd2ff11   [PARISC] only make executable areas executable ... Browse Code »

    Currently parisc has the whole kernel marked as RWX, meaning any
    kernel page at all is eligible to be executed. This can cause a
    theoretical problem on systems with combined I/D TLB because the act
    of referencing a page causes a TLB insertion with an executable bit.
    This TLB entry may be used by the CPU as the basis for speculating the
    page into the I-Cache. If this speculated page is subsequently used
    for a user process, there is the possibility we will get a stale
    I-cache line picked up as the binary executes.

    As a point of good practise, only mark actual kernel text pages as
    executable. The same has to be done for init_text pages, but they're
    converted to data pages (and the I-Cache flushed) when the init memory
    is released.

    Signed-off-by: James Bottomley

    James Bottomley
     
  • b54cd0d50   [PARISC] fix pacache .size with new binutils ... Browse Code »

    Fix style of flush_user_dcache_range_asm procedure declaration in
    arch/parisc/kernel/pacache.s to be consistent with other assembly
    procedures.

    Signed-off-by: Meelis Roos
    Signed-off-by: James Bottomley

    Meelis Roos
     

14 Apr, 2011

1 commit

  • 184748cc5   sched: Provide scheduler_ipi() callback in response to smp_send_reschedule() ... Browse Code »

    For future rework of try_to_wake_up() we'd like to push part of that
    function onto the CPU the task is actually going to run on.

    In order to do so we need a generic callback from the existing scheduler IPI.

    This patch introduces such a generic callback: scheduler_ipi() and
    implements it as a NOP.

    BenH notes: PowerPC might use this IPI on offline CPUs under rare conditions!

    Acked-by: Russell King
    Acked-by: Martin Schwidefsky
    Acked-by: Chris Metcalf
    Acked-by: Jesper Nilsson
    Acked-by: Benjamin Herrenschmidt
    Signed-off-by: Ralf Baechle
    Reviewed-by: Frank Rowand
    Cc: Mike Galbraith
    Cc: Nick Piggin
    Cc: Linus Torvalds
    Cc: Andrew Morton
    Signed-off-by: Ingo Molnar
    Signed-off-by: Peter Zijlstra
    Link: http://lkml.kernel.org/r/20110405152728.744338123@chello.nl

    Peter Zijlstra
     

31 Mar, 2011

1 commit

29 Mar, 2011

3 commits

25 Mar, 2011

1 commit

  • 0415b00d1   percpu: Always align percpu output section to PAGE_SIZE ... Browse Code »

    Percpu allocator honors alignment request upto PAGE_SIZE and both the
    percpu addresses in the percpu address space and the translated kernel
    addresses should be aligned accordingly. The calculation of the
    former depends on the alignment of percpu output section in the kernel
    image.

    The linker script macros PERCPU_VADDR() and PERCPU() are used to
    define this output section and the latter takes @align parameter.
    Several architectures are using @align smaller than PAGE_SIZE breaking
    percpu memory alignment.

    This patch removes @align parameter from PERCPU(), renames it to
    PERCPU_SECTION() and makes it always align to PAGE_SIZE. While at it,
    add PCPU_SETUP_BUG_ON() checks such that alignment problems are
    reliably detected and remove percpu alignment comment recently added
    in workqueue.c as the condition would trigger BUG way before reaching
    there.

    For um, this patch raises the alignment of percpu area. As the area
    is in .init, there shouldn't be any noticeable difference.

    This problem was discovered by David Howells while debugging boot
    failure on mn10300.

    Signed-off-by: Tejun Heo
    Acked-by: Mike Frysinger
    Cc: uclinux-dist-devel@blackfin.uclinux.org
    Cc: David Howells
    Cc: Jeff Dike
    Cc: user-mode-linux-devel@lists.sourceforge.net

    Tejun Heo
     

22 Mar, 2011

1 commit

16 Mar, 2011

1 commit

  • 79d8a8f73   Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu ... Browse Code »

    * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
    percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support
    percpu: Generic support for this_cpu_cmpxchg_double()
    alpha: use L1_CACHE_BYTES for cacheline size in the linker script
    percpu: align percpu readmostly subsection to cacheline

    Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the
    percpu alignment having changed ("x86: Reduce back the alignment of the
    per-CPU data section")

    Linus Torvalds
     

11 Feb, 2011

4 commits

10 Feb, 2011

1 commit

31 Jan, 2011

1 commit

  • bb1dfc1cf   parisc: Switch do_timer() to xtime_update() ... Browse Code »

    xtime_update() takes the xtime_lock itself.

    Signed-off-by: Torben Hohn
    Cc: hch@infradead.org
    Cc: Peter Zijlstra
    Cc: johnstul@us.ibm.com
    Cc: Helge Deller
    Cc: "James E.J. Bottomley"
    Cc: Kyle McMartin
    Cc: yong.zhang0@gmail.com
    LKML-Reference:
    Signed-off-by: Thomas Gleixner

    Torben Hohn
     

26 Jan, 2011

1 commit

  • ac751efa6   console: rename acquire/release_console_sem() to console_lock/unlock() ... Browse Code »

    The -rt patches change the console_semaphore to console_mutex. As a
    result, a quite large chunk of the patches changes all
    acquire/release_console_sem() to acquire/release_console_mutex()

    This commit makes things use more neutral function names which dont make
    implications about the underlying lock.

    The only real change is the return value of console_trylock which is
    inverted from try_acquire_console_sem()

    This patch also paves the way to switching console_sem from a semaphore to
    a mutex.

    [akpm@linux-foundation.org: coding-style fixes]
    [akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]
    Signed-off-by: Torben Hohn
    Cc: Thomas Gleixner
    Cc: Greg KH
    Cc: Ingo Molnar
    Cc: Geert Uytterhoeven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Torben Hohn
     

25 Jan, 2011

1 commit

  • 19df0c2fe   percpu: align percpu readmostly subsection to cacheline ... Browse Code »

    Currently percpu readmostly subsection may share cachelines with other
    percpu subsections which may result in unnecessary cacheline bounce
    and performance degradation.

    This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
    linker macros, makes each arch linker scripts specify its cacheline
    size and use it to align percpu subsections.

    This is based on Shaohua's x86 only patch.

    Signed-off-by: Tejun Heo
    Cc: Shaohua Li

    Tejun Heo
     

15 Jan, 2011

2 commits

  • 8b4ae3342   eliminate special FLUSH flag from page table ... Browse Code »

    This was used to flush a region even if the page table entry had been
    cleared. In theory this was never necessary, but now we've switched to
    alias based flushing, the whole set of code associated with it can be dumped.

    Signed-off-by: James Bottomley
    Signed-off-by: James Bottomley

    James Bottomley
     
  • f311847c2   parisc: flush pages through tmpalias space ... Browse Code »
    88

    The kernel has an 8M tmpailas space (originally designed for copying
    and clearing pages but now only used for clearing). The idea is
    to place zeros into the cache above a physical page rather than into
    the physical page and flush the cache, because often the zeros end up
    being replaced quickly anyway.

    We can also use the tmpalias space for flushing a page. The difference
    here is that we have to do tmpalias processing in the non access data and
    instruction traps. The principle is the same: as long as we know the physical
    address and have a virtual address congruent to the real one, the flush will
    be effective.

    In order to use the tmpalias space, the icache miss path has to be enhanced to
    check for the alias region to make the fic instruction effective.

    Signed-off-by: James Bottomley

    James Bottomley