Eric Lee / smarc-fsl-linux-kernel

27 Aug, 2011

1 commit

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
     

19 Mar, 2011

2 commits

28 Oct, 2010

3 commits

07 Oct, 2010

1 commit

  • df9ee2927   Fix IRQ flag handling naming ... Browse Code »

    Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration,
    it maps:

    local_irq_enable() -> raw_local_irq_enable()
    local_irq_disable() -> raw_local_irq_disable()
    local_irq_save() -> raw_local_irq_save()
    ...

    and under the other configuration, it maps:

    raw_local_irq_enable() -> local_irq_enable()
    raw_local_irq_disable() -> local_irq_disable()
    raw_local_irq_save() -> local_irq_save()
    ...

    This is quite confusing. There should be one set of names expected of the
    arch, and this should be wrapped to give another set of names that are expected
    by users of this facility.

    Change this to have the arch provide:

    flags = arch_local_save_flags()
    flags = arch_local_irq_save()
    arch_local_irq_restore(flags)
    arch_local_irq_disable()
    arch_local_irq_enable()
    arch_irqs_disabled_flags(flags)
    arch_irqs_disabled()
    arch_safe_halt()

    Then linux/irqflags.h wraps these to provide:

    raw_local_save_flags(flags)
    raw_local_irq_save(flags)
    raw_local_irq_restore(flags)
    raw_local_irq_disable()
    raw_local_irq_enable()
    raw_irqs_disabled_flags(flags)
    raw_irqs_disabled()
    raw_safe_halt()

    with type checking on the flags 'arguments', and then wraps those to provide:

    local_save_flags(flags)
    local_irq_save(flags)
    local_irq_restore(flags)
    local_irq_disable()
    local_irq_enable()
    irqs_disabled_flags(flags)
    irqs_disabled()
    safe_halt()

    with tracing included if enabled.

    The arch functions can now all be inline functions rather than some of them
    having to be macros.

    Signed-off-by: David Howells [X86, FRV, MN10300]
    Signed-off-by: Chris Metcalf [Tile]
    Signed-off-by: Michal Simek [Microblaze]
    Tested-by: Catalin Marinas [ARM]
    Acked-by: Thomas Gleixner
    Acked-by: Haavard Skinnemoen [AVR]
    Acked-by: Tony Luck [IA-64]
    Acked-by: Hirokazu Takata [M32R]
    Acked-by: Greg Ungerer [M68K/M68KNOMMU]
    Acked-by: Ralf Baechle [MIPS]
    Acked-by: Kyle McMartin [PA-RISC]
    Acked-by: Paul Mackerras [PowerPC]
    Acked-by: Martin Schwidefsky [S390]
    Acked-by: Chen Liqin [Score]
    Acked-by: Matt Fleming [SH]
    Acked-by: David S. Miller [Sparc]
    Acked-by: Chris Zankel [Xtensa]
    Reviewed-by: Richard Henderson [Alpha]
    Reviewed-by: Yoshinori Sato [H8300]
    Cc: starvik@axis.com [CRIS]
    Cc: jesper.nilsson@axis.com [CRIS]
    Cc: linux-cris-kernel@axis.com

    David Howells
     

13 Mar, 2010

1 commit

  • 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
     

12 Jan, 2010

1 commit

11 Dec, 2009

1 commit

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
     

01 Jul, 2009

1 commit

12 Jun, 2009

1 commit

16 Apr, 2009

1 commit

10 Apr, 2009

1 commit

14 Jan, 2009

1 commit

11 Dec, 2008

1 commit

  • 24646bd22   MN10300: Fix the preemption resume_kernel() routine ... Browse Code »

    Fix the preemption resume_kernel() routine by inverting the test to see
    whether interrupts are off (IM7 is all enabled, not all disabled).

    Furthermore, interrupts should be disabled on entry to resume_kernel() so that
    they're correctly set for jumping to restore_all() and doing the need
    reschedule test.

    Signed-off-by: Akira Takeuchi
    Signed-off-by: David Howells
    Signed-off-by: Linus Torvalds

    Akira Takeuchi
     

02 Aug, 2008

1 commit

09 Feb, 2008

1 commit

  • b920de1b7   mn10300: add the MN10300/AM33 architecture to the kernel ... Browse Code »

    Add architecture support for the MN10300/AM33 CPUs produced by MEI to the
    kernel.

    This patch also adds board support for the ASB2303 with the ASB2308 daughter
    board, and the ASB2305. The only processor supported is the MN103E010, which
    is an AM33v2 core plus on-chip devices.

    [akpm@linux-foundation.org: nuke cvs control strings]
    Signed-off-by: Masakazu Urade
    Signed-off-by: Koichi Yasutake
    Signed-off-by: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells