Doug / smarc-fsl-linux-kernel

06 Oct, 2012

2 commits

  • 046d662f4   coredump: make core dump functionality optional ... Browse Code »

    Adds an expert Kconfig option, CONFIG_COREDUMP, which allows disabling of
    core dump. This saves approximately 2.6k in the compiled kernel, and
    complements CONFIG_ELF_CORE, which now depends on it.

    CONFIG_COREDUMP also disables coredump-related sysctls, except for
    suid_dumpable and related functions, which are necessary for ptrace.

    [akpm@linux-foundation.org: fix binfmt_aout.c build]
    Signed-off-by: Alex Kelly
    Reviewed-by: Josh Triplett
    Acked-by: Serge Hallyn
    Acked-by: Kees Cook
    Cc: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alex Kelly
     
  • 754b7b63d   sections: disable const sections for PA-RISC v2 ... Browse Code »

    The PA-RISC tool chain seems to have some problem with correct
    read/write attributes on sections. This causes problems when the const
    sections are fixed up for other architecture to only contain truly
    read-only data.

    Disable const sections for PA-RISC

    This can cause a bit of noise with modpost.

    Signed-off-by: Andi Kleen
    Cc: "James E.J. Bottomley"
    Cc: Helge Deller
    Acked-by: Sam Ravnborg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andi Kleen
     

03 Oct, 2012

1 commit

  • 437589a74   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace ... Browse Code »

    Pull user namespace changes from Eric Biederman:
    "This is a mostly modest set of changes to enable basic user namespace
    support. This allows the code to code to compile with user namespaces
    enabled and removes the assumption there is only the initial user
    namespace. Everything is converted except for the most complex of the
    filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,
    nfs, ocfs2 and xfs as those patches need a bit more review.

    The strategy is to push kuid_t and kgid_t values are far down into
    subsystems and filesystems as reasonable. Leaving the make_kuid and
    from_kuid operations to happen at the edge of userspace, as the values
    come off the disk, and as the values come in from the network.
    Letting compile type incompatible compile errors (present when user
    namespaces are enabled) guide me to find the issues.

    The most tricky areas have been the places where we had an implicit
    union of uid and gid values and were storing them in an unsigned int.
    Those places were converted into explicit unions. I made certain to
    handle those places with simple trivial patches.

    Out of that work I discovered we have generic interfaces for storing
    quota by projid. I had never heard of the project identifiers before.
    Adding full user namespace support for project identifiers accounts
    for most of the code size growth in my git tree.

    Ultimately there will be work to relax privlige checks from
    "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing
    root in a user names to do those things that today we only forbid to
    non-root users because it will confuse suid root applications.

    While I was pushing kuid_t and kgid_t changes deep into the audit code
    I made a few other cleanups. I capitalized on the fact we process
    netlink messages in the context of the message sender. I removed
    usage of NETLINK_CRED, and started directly using current->tty.

    Some of these patches have also made it into maintainer trees, with no
    problems from identical code from different trees showing up in
    linux-next.

    After reading through all of this code I feel like I might be able to
    win a game of kernel trivial pursuit."

    Fix up some fairly trivial conflicts in netfilter uid/git logging code.

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)
    userns: Convert the ufs filesystem to use kuid/kgid where appropriate
    userns: Convert the udf filesystem to use kuid/kgid where appropriate
    userns: Convert ubifs to use kuid/kgid
    userns: Convert squashfs to use kuid/kgid where appropriate
    userns: Convert reiserfs to use kuid and kgid where appropriate
    userns: Convert jfs to use kuid/kgid where appropriate
    userns: Convert jffs2 to use kuid and kgid where appropriate
    userns: Convert hpfs to use kuid and kgid where appropriate
    userns: Convert btrfs to use kuid/kgid where appropriate
    userns: Convert bfs to use kuid/kgid where appropriate
    userns: Convert affs to use kuid/kgid wherwe appropriate
    userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids
    userns: On ia64 deal with current_uid and current_gid being kuid and kgid
    userns: On ppc convert current_uid from a kuid before printing.
    userns: Convert s390 getting uid and gid system calls to use kuid and kgid
    userns: Convert s390 hypfs to use kuid and kgid where appropriate
    userns: Convert binder ipc to use kuids
    userns: Teach security_path_chown to take kuids and kgids
    userns: Add user namespace support to IMA
    userns: Convert EVM to deal with kuids and kgids in it's hmac computation
    ...

    Linus Torvalds
     

02 Oct, 2012

4 commits

  • 06d2fe153   Merge tag 'driver-core-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core ... Browse Code »

    Pull driver core merge from Greg Kroah-Hartman:
    "Here is the big driver core update for 3.7-rc1.

    A number of firmware_class.c updates (as you saw a month or so ago),
    and some hyper-v updates and some printk fixes as well. All patches
    that are outside of the drivers/base area have been acked by the
    respective maintainers, and have all been in the linux-next tree for a
    while.

    Signed-off-by: Greg Kroah-Hartman "

    * tag 'driver-core-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
    memory: tegra{20,30}-mc: Fix reading incorrect register in mc_readl()
    device.h: Add missing inline to #ifndef CONFIG_PRINTK dev_vprintk_emit
    memory: emif: Add ifdef CONFIG_DEBUG_FS guard for emif_debugfs_[init|exit]
    Documentation: Fixes some translation error in Documentation/zh_CN/gpio.txt
    Documentation: Remove 3 byte redundant code at the head of the Documentation/zh_CN/arm/booting
    Documentation: Chinese translation of Documentation/video4linux/omap3isp.txt
    device and dynamic_debug: Use dev_vprintk_emit and dev_printk_emit
    dev: Add dev_vprintk_emit and dev_printk_emit
    netdev_printk/netif_printk: Remove a superfluous logging colon
    netdev_printk/dynamic_netdev_dbg: Directly call printk_emit
    dev_dbg/dynamic_debug: Update to use printk_emit, optimize stack
    driver-core: Shut up dev_dbg_reatelimited() without DEBUG
    tools/hv: Parse /etc/os-release
    tools/hv: Check for read/write errors
    tools/hv: Fix exit() error code
    tools/hv: Fix file handle leak
    Tools: hv: Implement the KVP verb - KVP_OP_GET_IP_INFO
    Tools: hv: Rename the function kvp_get_ip_address()
    Tools: hv: Implement the KVP verb - KVP_OP_SET_IP_INFO
    Tools: hv: Add an example script to configure an interface
    ...

    Linus Torvalds
     
  • 81f56e537   Merge tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 ... Browse Code »

    Pull arm64 support from Catalin Marinas:
    "Linux support for the 64-bit ARM architecture (AArch64)

    Features currently supported:
    - 39-bit address space for user and kernel (each)
    - 4KB and 64KB page configurations
    - Compat (32-bit) user applications (ARMv7, EABI only)
    - Flattened Device Tree (mandated for all AArch64 platforms)
    - ARM generic timers"

    * tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: (35 commits)
    arm64: ptrace: remove obsolete ptrace request numbers from user headers
    arm64: Do not set the SMP/nAMP processor bit
    arm64: MAINTAINERS update
    arm64: Build infrastructure
    arm64: Miscellaneous header files
    arm64: Generic timers support
    arm64: Loadable modules
    arm64: Miscellaneous library functions
    arm64: Performance counters support
    arm64: Add support for /proc/sys/debug/exception-trace
    arm64: Debugging support
    arm64: Floating point and SIMD
    arm64: 32-bit (compat) applications support
    arm64: User access library functions
    arm64: Signal handling support
    arm64: VDSO support
    arm64: System calls handling
    arm64: ELF definitions
    arm64: SMP support
    arm64: DMA mapping API
    ...

    Linus Torvalds
     
  • 3b29b03a4   Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Browse Code »

    Pull x86/EFI changes from Ingo Molnar:
    "EFI loader robustness enhancements plus smaller fixes"

    * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    efi: Fix the ACPI BGRT driver for images located in EFI boot services memory
    efi: Add a function to look up existing IO memory mappings
    efi: Defer freeing boot services memory until after ACPI init
    x86, EFI: Calculate the EFI framebuffer size instead of trusting the firmware
    efifb: Skip DMI checks if the bootloader knows what it's doing
    efi: initialize efi.runtime_version to make query_variable_info/update_capsule workable
    efi: Build EFI stub with EFI-appropriate options
    X86: Improve GOP detection in the EFI boot stub

    Linus Torvalds
     
  • 0b981cb94   Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Browse Code »

    Pull scheduler changes from Ingo Molnar:
    "Continued quest to clean up and enhance the cputime code by Frederic
    Weisbecker, in preparation for future tickless kernel features.

    Other than that, smallish changes."

    Fix up trivial conflicts due to additions next to each other in arch/{x86/}Kconfig

    * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
    cputime: Make finegrained irqtime accounting generally available
    cputime: Gather time/stats accounting config options into a single menu
    ia64: Reuse system and user vtime accounting functions on task switch
    ia64: Consolidate user vtime accounting
    vtime: Consolidate system/idle context detection
    cputime: Use a proper subsystem naming for vtime related APIs
    sched: cpu_power: enable ARCH_POWER
    sched/nohz: Clean up select_nohz_load_balancer()
    sched: Fix load avg vs. cpu-hotplug
    sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW
    sched: Fix nohz_idle_balance()
    sched: Remove useless code in yield_to()
    sched: Add time unit suffix to sched sysctl knobs
    sched/debug: Limit sd->*_idx range on sysctl
    sched: Remove AFFINE_WAKEUPS feature flag
    s390: Remove leftover account_tick_vtime() header
    cputime: Consolidate vtime handling on context switch
    sched: Move cputime code to its own file
    cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING
    tile: Remove SD_PREFER_LOCAL leftover
    ...

    Linus Torvalds
     

30 Sep, 2012

2 commits

  • 2223af389   efi: Fix the ACPI BGRT driver for images located in EFI boot services memory ... Browse Code »

    The ACPI BGRT driver accesses the BIOS logo image when it initializes.
    However, ACPI 5.0 (which introduces the BGRT) recommends putting the
    logo image in EFI boot services memory, so that the OS can reclaim that
    memory. Production systems follow this recommendation, breaking the
    ACPI BGRT driver.

    Move the bulk of the BGRT code to run during a new EFI late
    initialization phase, which occurs after switching EFI to virtual mode,
    and after initializing ACPI, but before freeing boot services memory.
    Copy the BIOS logo image to kernel memory at that point, and make it
    accessible to the BGRT driver. Rework the existing ACPI BGRT driver to
    act as a simple wrapper exposing that image (and the properties from the
    BGRT) via sysfs.

    Signed-off-by: Josh Triplett
    Link: http://lkml.kernel.org/r/93ce9f823f1c1f3bb88bdd662cce08eee7a17f5d.1348876882.git.josh@joshtriplett.org
    Signed-off-by: H. Peter Anvin

    Josh Triplett
     
  • 785107923   efi: Defer freeing boot services memory until after ACPI init ... Browse Code »

    Some new ACPI 5.0 tables reference resources stored in boot services
    memory, so keep that memory around until we have ACPI and can extract
    data from it.

    Signed-off-by: Josh Triplett
    Link: http://lkml.kernel.org/r/baaa6d44bdc4eb0c58e5d1b4ccd2c729f854ac55.1348876882.git.josh@joshtriplett.org
    Signed-off-by: H. Peter Anvin

    Josh Triplett
     

26 Sep, 2012

2 commits

  • 1fd2b4425   rcu: Userspace RCU extended QS selftest ... Browse Code »

    Provide a config option that enables the userspace
    RCU extended quiescent state on every CPUs by default.

    This is for testing purpose.

    Signed-off-by: Frederic Weisbecker
    Cc: Alessio Igor Bogani
    Cc: Andrew Morton
    Cc: Avi Kivity
    Cc: Chris Metcalf
    Cc: Christoph Lameter
    Cc: Geoff Levand
    Cc: Gilad Ben Yossef
    Cc: Hakan Akkan
    Cc: H. Peter Anvin
    Cc: Ingo Molnar
    Cc: Josh Triplett
    Cc: Kevin Hilman
    Cc: Max Krasnyansky
    Cc: Peter Zijlstra
    Cc: Stephen Hemminger
    Cc: Steven Rostedt
    Cc: Sven-Thorsten Dietrich
    Cc: Thomas Gleixner
    Signed-off-by: Paul E. McKenney
    Reviewed-by: Josh Triplett

    Frederic Weisbecker
     
  • 2b1d5024e   rcu: Settle config for userspace extended quiescent state ... Browse Code »

    Create a new config option under the RCU menu that put
    CPUs under RCU extended quiescent state (as in dynticks
    idle mode) when they run in userspace. This require
    some contribution from architectures to hook into kernel
    and userspace boundaries.

    Signed-off-by: Frederic Weisbecker
    Cc: Alessio Igor Bogani
    Cc: Andrew Morton
    Cc: Avi Kivity
    Cc: Chris Metcalf
    Cc: Christoph Lameter
    Cc: Geoff Levand
    Cc: Gilad Ben Yossef
    Cc: Hakan Akkan
    Cc: H. Peter Anvin
    Cc: Ingo Molnar
    Cc: Josh Triplett
    Cc: Kevin Hilman
    Cc: Max Krasnyansky
    Cc: Peter Zijlstra
    Cc: Stephen Hemminger
    Cc: Steven Rostedt
    Cc: Sven-Thorsten Dietrich
    Cc: Thomas Gleixner
    Signed-off-by: Paul E. McKenney
    Reviewed-by: Josh Triplett

    Frederic Weisbecker
     

25 Sep, 2012

2 commits

  • fdf9c3565   cputime: Make finegrained irqtime accounting generally available ... Browse Code »

    There is no known reason for this option to be unavailable on other
    archs than x86. They just need to call enable_sched_clock_irqtime()
    if they have a sufficiently finegrained clock to make it working.

    Move it to the general option and let the user choose between
    it and pure tick based or virtual cputime accounting.

    Note that virtual cputime accounting already performs a finegrained
    irqtime accounting. CONFIG_IRQ_TIME_ACCOUNTING is a kind of middle ground
    between tick and virtual based accounting. So CONFIG_IRQ_TIME_ACCOUNTING
    and CONFIG_VIRT_CPU_ACCOUNTING are mutually exclusive choices.

    Signed-off-by: Frederic Weisbecker
    Cc: Tony Luck
    Cc: Fenghua Yu
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: Peter Zijlstra

    Frederic Weisbecker
     
  • 391dc69c6   cputime: Gather time/stats accounting config options into a single menu ... Browse Code »

    This debloats a bit the general config menu and make these
    config options easier to find.

    Signed-off-by: Frederic Weisbecker
    Cc: Tony Luck
    Cc: Fenghua Yu
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: Peter Zijlstra

    Frederic Weisbecker
     

21 Sep, 2012

27 commits