1. 11 Dec, 2014 29 commits
  2. 10 Dec, 2014 11 commits
    • Linus Torvalds's avatar
      Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d8201269
      Linus Torvalds authored
      Pull more 2038 timer work from Thomas Gleixner:
       "Two more patches for the ongoing 2038 work:
         - New accessors to clock MONOTONIC and REALTIME seconds
        This is a seperate branch as Arnd has follow up work depending on
      * 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        timekeeping: Provide y2038 safe accessor to the seconds portion of CLOCK_REALTIME
        timekeeping: Provide fast accessor to the seconds part of CLOCK_MONOTONIC
    • Linus Torvalds's avatar
      Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3eb5b893
      Linus Torvalds authored
      Pull x86 MPX support from Thomas Gleixner:
       "This enables support for x86 MPX.
        MPX is a new debug feature for bound checking in user space.  It
        requires kernel support to handle the bound tables and decode the
        bound violating instruction in the trap handler"
      * 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        asm-generic: Remove asm-generic arch_bprm_mm_init()
        mm: Make arch_unmap()/bprm_mm_init() available to all architectures
        x86: Cleanly separate use of asm-generic/mm_hooks.h
        x86 mpx: Change return type of get_reg_offset()
        fs: Do not include mpx.h in exec.c
        x86, mpx: Add documentation on Intel MPX
        x86, mpx: Cleanup unused bound tables
        x86, mpx: On-demand kernel allocation of bounds tables
        x86, mpx: Decode MPX instruction to get bound violation information
        x86, mpx: Add MPX-specific mmap interface
        x86, mpx: Introduce VM_MPX to indicate that a VMA is MPX specific
        x86, mpx: Add MPX to disabled features
        ia64: Sync struct siginfo with general version
        mips: Sync struct siginfo with general version
        mpx: Extend siginfo structure to include bound violation information
        x86, mpx: Rename cfg_reg_u and status_reg
        x86: mpx: Give bndX registers actual names
        x86: Remove arbitrary instruction size limit in instruction decoder
    • Linus Torvalds's avatar
      Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9e66645d
      Linus Torvalds authored
      Pull irq domain updates from Thomas Gleixner:
       "The real interesting irq updates:
         - Support for hierarchical irq domains:
           For complex interrupt routing scenarios where more than one
           interrupt related chip is involved we had no proper representation
           in the generic interrupt infrastructure so far.  That made people
           implement rather ugly constructs in their nested irq chip
           implementations.  The main offenders are x86 and arm/gic.
           To distangle that mess we have now hierarchical irqdomains which
           seperate the various interrupt chips and connect them via the
           hierarchical domains.  That keeps the domain specific details
           internal to the particular hierarchy level and removes the
           criss/cross referencing of chip internals.  The resulting hierarchy
           for a complex x86 system will look like this:
              vector          mapped: 74
                msi-0         mapped: 2
                dmar-ir-1     mapped: 69
                  ioapic-1    mapped: 4
                  ioapic-0    mapped: 20
                  pci-msi-2   mapped: 45
                dmar-ir-0     mapped: 3
                  ioapic-2    mapped: 1
                  pci-msi-1   mapped: 2
                htirq         mapped: 0
           Neither ioapic nor pci-msi know about the dmar interrupt remapping
           between themself and the vector domain.  If interrupt remapping is
           disabled ioapic and pci-msi become direct childs of the vector
           In hindsight we should have done that years ago, but in hindsight
           we always know better :)
         - Support for generic MSI interrupt domain handling
           We have more and more non PCI related MSI interrupts, so providing
           a generic infrastructure for this is better than having all
           affected architectures implementing their own private hacks.
         - Support for PCI-MSI interrupt domain handling, based on the generic
           MSI support.
           This part carries the pci/msi branch from Bjorn Helgaas pci tree to
           avoid a massive conflict.  The PCI/MSI parts are acked by Bjorn.
        I have two more branches on top of this.  The full conversion of x86
        to hierarchical domains and a partial conversion of arm/gic"
      * 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
        genirq: Move irq_chip_write_msi_msg() helper to core
        PCI/MSI: Allow an msi_controller to be associated to an irq domain
        PCI/MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain
        PCI/MSI: Enhance core to support hierarchy irqdomain
        PCI/MSI: Move cached entry functions to irq core
        genirq: Provide default callbacks for msi_domain_ops
        genirq: Introduce msi_domain_alloc/free_irqs()
        asm-generic: Add msi.h
        genirq: Add generic msi irq domain support
        genirq: Introduce callback irq_chip.irq_write_msi_msg
        genirq: Work around __irq_set_handler vs stacked domains ordering issues
        irqdomain: Introduce helper function irq_domain_add_hierarchy()
        irqdomain: Implement a method to automatically call parent domains alloc/free
        genirq: Introduce helper irq_domain_set_info() to reduce duplicated code
        genirq: Split out flow handler typedefs into seperate header file
        genirq: Add IRQ_SET_MASK_OK_DONE to support stacked irqchip
        genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip
        genirq: Add more helper functions to support stacked irq_chip
        genirq: Introduce helper functions to support stacked irq_chip
        irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF
    • Linus Torvalds's avatar
      Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · ecb50f0a
      Linus Torvalds authored
      Pull irq core updates from Thomas Gleixner:
       "This is the first (boring) part of irq updates:
         - support for big endian I/O accessors in the generic irq chip
         - cleanup of brcmstb/bcm7120 drivers so they can be reused for non
           ARM SoCs
         - the usual pile of fixes and updates for the various ARM irq chips"
      * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
        irqchip: dw-apb-ictl: Add PM support
        irqchip: dw-apb-ictl: Enable IRQ_GC_MASK_CACHE_PER_TYPE
        irqchip: dw-apb-ictl: Always use use {readl|writel}_relaxed
        ARM: orion: convert the irq_reg_{readl,writel} calls to the new API
        irqchip: atmel-aic: Add missing entry for rm9200 irq fixups
        irqchip: atmel-aic: Rename at91sam9_aic_irq_fixup for naming consistency
        irqchip: atmel-aic: Add specific irq fixup function for sam9g45 and sam9rl
        irqchip: atmel-aic: Add irq fixups for at91sam926x SoCs
        irqchip: atmel-aic: Add irq fixup for RTT block
        irqchip: brcmstb-l2: Convert driver to use irq_reg_{readl,writel}
        irqchip: bcm7120-l2: Convert driver to use irq_reg_{readl,writel}
        irqchip: bcm7120-l2: Decouple driver from brcmstb-l2
        irqchip: bcm7120-l2: Extend driver to support 64+ bit controllers
        irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions
        irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask
        irqchip: bcm7120-l2: Make sure all register accesses use base+offset
        irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency
        irqchip: bcm7120-l2: Eliminate bad IRQ check
        irqchip: brcmstb-l2: Eliminate dependency on ARM code
        genirq: Generic chip: Add big endian I/O accessors
    • Linus Torvalds's avatar
      Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · a157508c
      Linus Torvalds authored
      Pull timer core updates from Thomas Gleixner:
       "The time(r) departement provides:
         - more infrastructure work on the year 2038 issue
         - a few fixes in the Armada SoC timers
         - the usual pile of fixlets and improvements"
      * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        clocksource: armada-370-xp: Use the reference clock on A375 SoC
        watchdog: orion: Use the reference clock on Armada 375 SoC
        clocksource: armada-370-xp: Add missing clock enable
        time: Fix sign bug in NTP mult overflow warning
        time: Remove timekeeping_inject_sleeptime()
        rtc: Update suspend/resume timing to use 64bit time
        rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement
        time: Fixup comments to reflect usage of timespec64
        time: Expose get_monotonic_coarse64() for in-kernel uses
        time: Expose getrawmonotonic64 for in-kernel uses
        time: Provide y2038 safe mktime() replacement
        time: Provide y2038 safe timekeeping_inject_sleeptime() replacement
        time: Provide y2038 safe do_settimeofday() replacement
        time: Complete NTP adjustment threshold judging conditions
        time: Avoid possible NTP adjustment mult overflow.
        time: Rename udelay_test.c to test_udelay.c
        clocksource: sirf: Remove hard-coded clock rate
    • Linus Torvalds's avatar
      Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 86c6a2fd
      Linus Torvalds authored
      Pull scheduler updates from Ingo Molnar:
       "The main changes in this cycle are:
         - 'Nested Sleep Debugging', activated when CONFIG_DEBUG_ATOMIC_SLEEP=y.
           This instruments might_sleep() checks to catch places that nest
           blocking primitives - such as mutex usage in a wait loop.  Such
           bugs can result in hard to debug races/hangs.
           Another category of invalid nesting that this facility will detect
           is the calling of blocking functions from within schedule() ->
           sched_submit_work() -> blk_schedule_flush_plug().
           There's some potential for false positives (if secondary blocking
           primitives themselves are not ready yet for this facility), but the
           kernel will warn once about such bugs per bootup, so the warning
           isn't much of a nuisance.
           This feature comes with a number of fixes, for problems uncovered
           with it, so no messages are expected normally.
         - Another round of sched/numa optimizations and refinements, for
         - Another round of sched/dl fixes and refinements.
        Plus various smaller fixes and cleanups"
      * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
        sched: Add missing rcu protection to wake_up_all_idle_cpus
        sched/deadline: Introduce start_hrtick_dl() for !CONFIG_SCHED_HRTICK
        sched/numa: Init numa balancing fields of init_task
        sched/deadline: Remove unnecessary definitions in cpudeadline.h
        sched/cpupri: Remove unnecessary definitions in cpupri.h
        sched/deadline: Fix rq->dl.pushable_tasks bug in push_dl_task()
        sched/fair: Fix stale overloaded status in the busiest group finding logic
        sched: Move p->nr_cpus_allowed check to select_task_rq()
        sched/completion: Document when to use wait_for_completion_io_*()
        sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC
        sched/fair: Kill task_struct::numa_entry and numa_group::task_list
        sched: Refactor task_struct to use numa_faults instead of numa_* pointers
        sched/deadline: Don't check CONFIG_SMP in switched_from_dl()
        sched/deadline: Reschedule from switched_from_dl() after a successful pull
        sched/deadline: Push task away if the deadline is equal to curr during wakeup
        sched/deadline: Add deadline rq status print
        sched/deadline: Fix artificial overrun introduced by yield_task_dl()
        sched/rt: Clean up check_preempt_equal_prio()
        sched/core: Use dl_bw_of() under rcu_read_lock_sched()
        sched: Check if we got a shallowest_idle_cpu before searching for least_loaded_cpu
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bee2782f
      Linus Torvalds authored
      Pull leftover perf fixes from Ingo Molnar:
       "Two perf fixes left over from the previous cycle"
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf session: Do not fail on processing out of order event
        x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and sync_regs
    • Linus Torvalds's avatar
      Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 5706ffd0
      Linus Torvalds authored
      Pull perf events update from Ingo Molnar:
       "On the kernel side there's few changes, the one that stands out is
        PEBS machine state sampling support on x86, by Stephane Eranian.
        On the tooling side:
        User visible tooling changes:
         - Don't open the DWARF info multiple times, keeping instead a dwfl
           handle in struct dso, greatly speeding up 'perf report' on powerpc.
           (Sukadev Bhattiprolu)
         - Introduce PARSE_OPT_DISABLED option flag and use it to avoid
           showing undersired options in tools that provides frontends to
           'perf record', like sched, kvm, etc (Namhyung Kim)
         - Fallback to kallsyms when using the minimal 'ELF' loader (Arnaldo
           Carvalho de Melo)
         - Fix annotation with kcore (Adrian Hunter)
         - Support source line numbers in annotate using a hotkey (Andi Kleen)
         - Callchain improvements including:
           * Enable printing the srcline in the history
           * Make get_srcline fall back to sym+offset (Andi Kleen)
         - TUI hist_entry browser fixes, including showing missing overhead
           value for first level callchain.  Detected comparing the output of
           --stdio/--gui (that matched) with --tui, that had this problem.
           (Namhyung Kim)
         - Support handling complete branch stacks as histograms (Andi Kleen)
        Tooling infrastructure changes:
         - Prep work for supporting per-pkg and snapshot counters in 'perf
           stat' (Jiri Olsa)
         - 'perf stat' refactorings, moving stuff from it to evsel.c to use in
           per-pkg/snapshot format changes (Jiri Olsa)
         - Add per-pkg format file parsing (Matt Fleming)
         - Clean up libelf feature support code (Namhyung Kim)
         - Add gzip decompression support for kernel modules (Namhyung Kim)
         - More prep patches for Intel PT, including a a thread stack and more
           stuff made available via the database export mechanism (Adrian
         - More Intel PT work, including a facility to export sample data
           (comms, threads, symbol names, etc) in a database friendly way,
           with an script to use this to create a postgresql database.
           (Adrian Hunter)
         - Make sure that thread->mg->machine points to the machine where the
           thread exists (it was being set only for the kmaps kernel modules
           case, do it as well for the mmaps) and use it to shorten function
           signatures (Arnaldo Carvalho de Melo)
        ... and lots of other fixes and smaller improvements"
      * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
        perf report: In branch stack mode use address history sorting
        perf report: Add --branch-history option
        perf callchain: Support handling complete branch stacks as histograms
        perf stat: Add support for snapshot counters
        perf stat: Add support for per-pkg counters
        perf tools: Remove perf_evsel__read interface
        perf stat: Use read_counter in read_counter_aggr
        perf stat: Make read_counter work over the thread dimension
        perf stat: Use perf_evsel__read_cb in read_counter
        perf tools: Add snapshot format file parsing
        perf tools: Add per-pkg format file parsing
        perf evsel: Introduce perf_evsel__read_cb function
        perf evsel: Introduce perf_counts_values__scale function
        perf evsel: Introduce perf_evsel__compute_deltas function
        perf tools: Allow to force redirect pr_debug to stderr.
        perf tools: Fix segfault due to invalid kernel dso access
        perf callchain: Make get_srcline fall back to sym+offset
        perf symbols: Move bfd_demangle stubbing to its only user
        perf callchain: Enable printing the srcline in the history
        perf tools: Collapse first level callchain entry if it has sibling
    • Linus Torvalds's avatar
      Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · c3011060
      Linus Torvalds authored
      Pull RCU updates from Ingo Molnar:
       "These are the main changes in this cycle:
          - Streamline RCU's use of per-CPU variables, shifting from "cpu"
            arguments to functions to "this_"-style per-CPU variable
          - signal-handling RCU updates.
          - real-time updates.
          - torture-test updates.
          - miscellaneous fixes.
          - documentation updates"
      * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
        rcu: Fix FIXME in rcu_tasks_kthread()
        rcu: More info about potential deadlocks with rcu_read_unlock()
        rcu: Optimize cond_resched_rcu_qs()
        rcu: Add sparse check for RCU_INIT_POINTER()
        documentation: memory-barriers.txt: Correct example for reorderings
        documentation: Add atomic_long_t to atomic_ops.txt
        documentation: Additional restriction for control dependencies
        documentation: Document RCU self test boot params
        rcutorture: Fix rcu_torture_cbflood() memory leak
        rcutorture: Remove obsolete kversion param in kvm.sh
        rcutorture: Remove stale test configurations
        rcutorture: Enable RCU self test in configs
        rcutorture: Add early boot self tests
        torture: Run Linux-kernel binary out of results directory
        cpu: Avoid puts_pending overflow
        rcu: Remove "cpu" argument to rcu_cleanup_after_idle()
        rcu: Remove "cpu" argument to rcu_prepare_for_idle()
        rcu: Remove "cpu" argument to rcu_needs_cpu()
        rcu: Remove "cpu" argument to rcu_note_context_switch()
        rcu: Remove "cpu" argument to rcu_preempt_check_callbacks()
    • Linus Torvalds's avatar
      Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9c37f959
      Linus Torvalds authored
      Pull locking tree changes from Ingo Molnar:
       "Two changes: a documentation update and a ticket locks live lock fix"
      * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/ticketlock: Fix spin_unlock_wait() livelock
        locking/lglocks: Add documentation of current lglocks implementation
    • Linus Torvalds's avatar
      Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic · a0e44677
      Linus Torvalds authored
      Pull asm-generic asm/io.h rewrite from Arnd Bergmann:
       "While there normally is no reason to have a pull request for
        asm-generic but have all changes get merged through whichever tree
        needs them, I do have a series for 3.19.
        There are two sets of patches that change significant portions of
        asm/io.h, and this branch contains both in order to resolve the
         - Will Deacon has done a set of patches to ensure that all
           architectures define {read,write}{b,w,l,q}_relaxed() functions or
           get them by including asm-generic/io.h.
           These functions are commonly used on ARM specific drivers to avoid
           expensive L2 cache synchronization implied by the normal
           {read,write}{b,w,l,q}, but we need to define them on all
           architectures in order to share the drivers across architectures
           and to enable CONFIG_COMPILE_TEST configurations for them
         - Thierry Reding has done an unrelated set of patches that extends
           the asm-generic/io.h file to the degree necessary to make it useful
           on ARM64 and potentially other architectures"
      * tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (29 commits)
        ARM64: use GENERIC_PCI_IOMAP
        sparc: io: remove duplicate relaxed accessors on sparc32
        ARM: sa11x0: Use void __iomem * in MMIO accessors
        arm64: Use include/asm-generic/io.h
        ARM: Use include/asm-generic/io.h
        asm-generic/io.h: Implement generic {read,write}s*()
        asm-generic/io.h: Reconcile I/O accessor overrides
        /dev/mem: Use more consistent data types
        Change xlate_dev_{kmem,mem}_ptr() prototypes
        ARM: ixp4xx: Properly override I/O accessors
        ARM: ixp4xx: Fix build with IXP4XX_INDIRECT_PCI
        ARM: ebsa110: Properly override I/O accessors
        ARC: Remove redundant PCI_IOBASE declaration
        documentation: memory-barriers: clarify relaxed io accessor semantics
        x86: io: implement dummy relaxed accessor macros for writes
        tile: io: implement dummy relaxed accessor macros for writes
        sparc: io: implement dummy relaxed accessor macros for writes
        powerpc: io: implement dummy relaxed accessor macros for writes
        parisc: io: implement dummy relaxed accessor macros for writes
        mn10300: io: implement dummy relaxed accessor macros for writes