Doug / smarc-fsl-linux-kernel

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
     

20 May, 2011

1 commit

13 Apr, 2011

1 commit

07 Jan, 2011

2 commits

14 Sep, 2010

1 commit

13 Mar, 2010

3 commits

  • baed7fc9b   Add generic sys_ipc wrapper ... Browse Code »

    Add a generic implementation of the ipc demultiplexer syscall. Except for
    s390 and sparc64 all implementations of the sys_ipc are nearly identical.

    There are slight differences in the types of the parameters, where mips
    and powerpc as the only 64-bit architectures with sys_ipc use unsigned
    long for the "third" argument as it gets casted to a pointer later, while
    it traditionally is an "int" like most other paramters. frv goes even
    further and uses unsigned long for all parameters execept for "ptr" which
    is a pointer type everywhere. The change from int to unsigned long for
    "third" and back to "int" for the others on frv should be fine due to the
    in-register calling conventions for syscalls (we already had a similar
    issue with the generic sys_ptrace), but I'd prefer to have the arch
    maintainers looks over this in details.

    Except for that h8300, m68k and m68knommu lack an impplementation of the
    semtimedop sub call which this patch adds, and various architectures have
    gets used - at least on i386 it seems superflous as the compat code on
    x86-64 and ia64 doesn't even bother to implement it.

    [akpm@linux-foundation.org: add sys_ipc to sys_ni.c]
    Signed-off-by: Christoph Hellwig
    Cc: Ralf Baechle
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mundt
    Cc: Jeff Dike
    Cc: Hirokazu Takata
    Cc: Thomas Gleixner
    Cc: Ingo Molnar
    Reviewed-by: H. Peter Anvin
    Cc: Al Viro
    Cc: Arnd Bergmann
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: "Luck, Tony"
    Cc: James Morris
    Cc: Andreas Schwab
    Acked-by: Jesper Nilsson
    Acked-by: Russell King
    Acked-by: David Howells
    Acked-by: Kyle McMartin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     
  • a4679373c   Add generic sys_old_mmap() ... Browse Code »

    Add a generic implementation of the old mmap() syscall, which expects its
    argument in a memory block and switch all architectures over to use it.

    Signed-off-by: Christoph Hellwig
    Cc: Ralf Baechle
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mundt
    Cc: Jeff Dike
    Cc: Hirokazu Takata
    Cc: Thomas Gleixner
    Cc: Ingo Molnar
    Reviewed-by: H. Peter Anvin
    Cc: Al Viro
    Cc: Arnd Bergmann
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: "Luck, Tony"
    Cc: James Morris
    Cc: Andreas Schwab
    Acked-by: Jesper Nilsson
    Acked-by: Russell King
    Acked-by: Greg Ungerer
    Acked-by: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     
  • 5d0e52830   Add generic sys_old_select() ... Browse Code »

    Add a generic implementation of the old select() syscall, which expects
    its argument in a memory block and switch all architectures over to use
    it.

    Signed-off-by: Christoph Hellwig
    Cc: Ralf Baechle
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mundt
    Cc: Jeff Dike
    Cc: Hirokazu Takata
    Cc: Thomas Gleixner
    Cc: Ingo Molnar
    Reviewed-by: H. Peter Anvin
    Cc: Al Viro
    Cc: Arnd Bergmann
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: "Luck, Tony"
    Cc: James Morris
    Acked-by: Andreas Schwab
    Acked-by: Russell King
    Acked-by: Greg Ungerer
    Acked-by: David Howells
    Cc: Andreas Schwab
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

28 Feb, 2010

1 commit

  • 9674cdc74   m68k: Add NPTL support ... Browse Code »

    This patch adds several syscalls, that provide necessary
    functionality to support NPTL on m68k/ColdFire.
    The syscalls are get_thread_area, set_thread_area, atomic_cmpxchg_32 and
    atomic_barrier.
    The cmpxchg syscall is required for ColdFire as it doesn't support 'cas'
    instruction.

    Also a ptrace call PTRACE_GET_THREAD_AREA is added to allow debugger to
    inspect the TLS storage.

    Signed-off-by: Maxim Kuvyrkov
    Signed-off-by: Geert Uytterhoeven

    Maxim Kuvyrkov
     

21 Sep, 2009

1 commit

  • cdd6c482c   perf: Do the big rename: Performance Counters -> Performance Events ... Browse Code »

    Bye-bye Performance Counters, welcome Performance Events!

    In the past few months the perfcounters subsystem has grown out its
    initial role of counting hardware events, and has become (and is
    becoming) a much broader generic event enumeration, reporting, logging,
    monitoring, analysis facility.

    Naming its core object 'perf_counter' and naming the subsystem
    'perfcounters' has become more and more of a misnomer. With pending
    code like hw-breakpoints support the 'counter' name is less and
    less appropriate.

    All in one, we've decided to rename the subsystem to 'performance
    events' and to propagate this rename through all fields, variables
    and API names. (in an ABI compatible fashion)

    The word 'event' is also a bit shorter than 'counter' - which makes
    it slightly more convenient to write/handle as well.

    Thanks goes to Stephane Eranian who first observed this misnomer and
    suggested a rename.

    User-space tooling and ABI compatibility is not affected - this patch
    should be function-invariant. (Also, defconfigs were not touched to
    keep the size down.)

    This patch has been generated via the following script:

    FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

    sed -i \
    -e 's/PERF_EVENT_/PERF_RECORD_/g' \
    -e 's/PERF_COUNTER/PERF_EVENT/g' \
    -e 's/perf_counter/perf_event/g' \
    -e 's/nb_counters/nb_events/g' \
    -e 's/swcounter/swevent/g' \
    -e 's/tpcounter_event/tp_event/g' \
    $FILES

    for N in $(find . -name perf_counter.[ch]); do
    M=$(echo $N | sed 's/perf_counter/perf_event/g')
    mv $N $M
    done

    FILES=$(find . -name perf_event.*)

    sed -i \
    -e 's/COUNTER_MASK/REG_MASK/g' \
    -e 's/COUNTER/EVENT/g' \
    -e 's/\/event_id/g' \
    -e 's/counter/event/g' \
    -e 's/Counter/Event/g' \
    $FILES

    ... to keep it as correct as possible. This script can also be
    used by anyone who has pending perfcounters patches - it converts
    a Linux kernel tree over to the new naming. We tried to time this
    change to the point in time where the amount of pending patches
    is the smallest: the end of the merge window.

    Namespace clashes were fixed up in a preparatory patch - and some
    stylistic fallout will be fixed up in a subsequent patch.

    ( NOTE: 'counters' are still the proper terminology when we deal
    with hardware registers - and these sed scripts are a bit
    over-eager in renaming them. I've undone some of that, but
    in case there's something left where 'counter' would be
    better than 'event' we can undo that on an individual basis
    instead of touching an otherwise nicely automated patch. )

    Suggested-by: Stephane Eranian
    Acked-by: Peter Zijlstra
    Acked-by: Paul Mackerras
    Reviewed-by: Arjan van de Ven
    Cc: Mike Galbraith
    Cc: Arnaldo Carvalho de Melo
    Cc: Frederic Weisbecker
    Cc: Steven Rostedt
    Cc: Benjamin Herrenschmidt
    Cc: David Howells
    Cc: Kyle McMartin
    Cc: Martin Schwidefsky
    Cc: "David S. Miller"
    Cc: Thomas Gleixner
    Cc: "H. Peter Anvin"
    Cc:
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Ingo Molnar
     

27 Aug, 2009

1 commit

23 Apr, 2009

1 commit

17 Mar, 2009

1 commit

16 Jan, 2009

1 commit

  • 49148020b   m68k,m68knommu: merge header files ... Browse Code »

    Merge header files for m68k and m68knommu to the single location:

    arch/m68k/include/asm

    The majority of this patch was the result of the
    script that is included in the changelog below.

    The script was originally written by Arnd Bergman and
    exten by me to cover a few more files.

    When the header files differed the script uses the following:

    The original m68k file is named _mm.h [mm for memory manager]
    The m68knommu file is named _no.h [no for no memory manager]

    The files uses the following include guard:

    This include gaurd works as the m68knommu toolchain set
    the __uClinux__ symbol - so this should work in userspace too.

    Merging the header files for m68k and m68knommu exposes the
    (unexpected?) ABI differences thus it is easier to actually
    identify these and thus to fix them.

    The commit has been build tested with both a m68k and
    a m68knommu toolchain - with success.

    The commit has also been tested with "make headers_check"
    and this patch fixes make headers_check for m68knommu.

    The script used:
    TARGET=arch/m68k/include/asm
    SOURCE=arch/m68knommu/include/asm

    INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \
    linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \
    oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \
    shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \
    termbits.h termios.h tlb.h types.h user.h"

    EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \
    ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \
    sections.h topology.h"

    NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \
    elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \
    m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \
    m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \
    m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \
    mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \
    mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \
    nettel.h quicc_simple.h smp.h"

    FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \
    cacheflush.h checksum.h current.h delay.h div64.h \
    dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \
    irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \
    module.h page.h page_offset.h param.h pci.h pgalloc.h \
    pgtable.h processor.h ptrace.h scatterlist.h segment.h \
    setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \
    thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \
    unaligned.h unistd.h"

    mergefile() {
    BASE=${1%.h}
    git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h
    git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h

    cat << EOF > ${TARGET}/$1
    EOF

    git add ${TARGET}/$1
    }

    set -e

    mkdir -p ${TARGET}

    git mv include/asm-m68k/* ${TARGET}
    rmdir include/asm-m68k

    git rm ${SOURCE}/Kbuild
    for F in $INCLUDE $EQUAL; do
    git rm ${SOURCE}/$F
    done

    for F in $NOMUUFILES; do
    git mv ${SOURCE}/$F ${TARGET}/$F
    done

    for F in $FILES ; do
    mergefile $F
    done

    rmdir arch/m68knommu/include/asm
    rmdir arch/m68knommu/include

    Cc: Arnd Bergmann
    Cc: Geert Uytterhoeven
    Signed-off-by: Sam Ravnborg
    Signed-off-by: Greg Ungerer

    Sam Ravnborg