10 Oct, 2018

2 commits

  • [ Upstream commit 5c41aaad409c097cf1ef74f2c649fed994744ef5 ]

    Building drivers/mtd/nand/raw/nandsim.c on arch/hexagon/ produces a
    printk format build warning. This is due to hexagon's ffs() being
    coded as returning long instead of int.

    Fix the printk format warning by changing all of hexagon's ffs() and
    fls() functions to return int instead of long. The variables that
    they return are already int instead of long. This return type
    matches the return type in .

    ../drivers/mtd/nand/raw/nandsim.c: In function 'init_nandsim':
    ../drivers/mtd/nand/raw/nandsim.c:760:2: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long int' [-Wformat]

    There are no ffs() or fls() allmodconfig build errors after making this
    change.

    Signed-off-by: Randy Dunlap
    Cc: Richard Kuo
    Cc: linux-hexagon@vger.kernel.org
    Cc: Geert Uytterhoeven
    Patch-mainline: linux-kernel @ 07/22/2018, 16:03
    Signed-off-by: Richard Kuo
    Signed-off-by: Sasha Levin
    Signed-off-by: Greg Kroah-Hartman

    Randy Dunlap
     
  • [ Upstream commit 200f351e27f014fcbf69b544b0b4b72aeaf45fd3 ]

    Fix build warning in arch/hexagon/kernel/dma.c by casting a void *
    to unsigned long to match the function parameter type.

    ../arch/hexagon/kernel/dma.c: In function 'arch_dma_alloc':
    ../arch/hexagon/kernel/dma.c:51:5: warning: passing argument 2 of 'gen_pool_add' makes integer from pointer without a cast [enabled by default]
    ../include/linux/genalloc.h:112:19: note: expected 'long unsigned int' but argument is of type 'void *'

    Signed-off-by: Randy Dunlap
    Cc: Yoshinori Sato
    Cc: Rich Felker
    Cc: linux-sh@vger.kernel.org
    Patch-mainline: linux-kernel @ 07/20/2018, 20:17
    [rkuo@codeaurora.org: fixed architecture name]
    Signed-off-by: Richard Kuo
    Signed-off-by: Sasha Levin
    Signed-off-by: Greg Kroah-Hartman

    Randy Dunlap
     

21 Jun, 2018

2 commits

  • [ Upstream commit 330e261c35dfb969c48f996dbbc8b334b5ee8d9d ]

    This is needed to link ipv6 as a loadable module, which in turn happens
    in allmodconfig.

    Signed-off-by: Arnd Bergmann
    Signed-off-by: Richard Kuo
    Signed-off-by: Sasha Levin
    Signed-off-by: Greg Kroah-Hartman

    Arnd Bergmann
     
  • [ Upstream commit a57ab96ef9dde231d4d46edba4d5f73720edc16a ]

    We already have memcpy_toio(), but not memset_io(), so let's
    add the obvious version to allow building an allmodconfig kernel
    without errors like

    drivers/gpu/drm/ttm/ttm_bo_util.c: In function 'ttm_bo_move_memcpy':
    drivers/gpu/drm/ttm/ttm_bo_util.c:390:3: error: implicit declaration of function 'memset_io' [-Werror=implicit-function-declaration]

    Signed-off-by: Arnd Bergmann
    Signed-off-by: Richard Kuo
    Signed-off-by: Sasha Levin
    Signed-off-by: Greg Kroah-Hartman

    Arnd Bergmann
     

02 Nov, 2017

3 commits

  • Many user space API headers have licensing information, which is either
    incomplete, badly formatted or just a shorthand for referring to the
    license under which the file is supposed to be. This makes it hard for
    compliance tools to determine the correct license.

    Update these files with an SPDX license identifier. The identifier was
    chosen based on the license information in the file.

    GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
    identifier with the added 'WITH Linux-syscall-note' exception, which is
    the officially assigned exception identifier for the kernel syscall
    exception:

    NOTE! This copyright does *not* cover user programs that use kernel
    services by normal system calls - this is merely considered normal use
    of the kernel, and does *not* fall under the heading of "derived work".

    This exception makes it possible to include GPL headers into non GPL
    code, without confusing license compliance tools.

    Headers which have either explicit dual licensing or are just licensed
    under a non GPL license are updated with the corresponding SPDX
    identifier and the GPLv2 with syscall exception identifier. The format
    is:
    ((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)

    SPDX license identifiers are a legally binding shorthand, which can be
    used instead of the full boiler plate text. The update does not remove
    existing license information as this has to be done on a case by case
    basis and the copyright holders might have to be consulted. This will
    happen in a separate step.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne. See the previous patch in this series for the
    methodology of how this patch was researched.

    Reviewed-by: Kate Stewart
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     
  • Many user space API headers are missing licensing information, which
    makes it hard for compliance tools to determine the correct license.

    By default are files without license information under the default
    license of the kernel, which is GPLV2. Marking them GPLV2 would exclude
    them from being included in non GPLV2 code, which is obviously not
    intended. The user space API headers fall under the syscall exception
    which is in the kernels COPYING file:

    NOTE! This copyright does *not* cover user programs that use kernel
    services by normal system calls - this is merely considered normal use
    of the kernel, and does *not* fall under the heading of "derived work".

    otherwise syscall usage would not be possible.

    Update the files which contain no license information with an SPDX
    license identifier. The chosen identifier is 'GPL-2.0 WITH
    Linux-syscall-note' which is the officially assigned identifier for the
    Linux syscall exception. SPDX license identifiers are a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne. See the previous patch in this series for the
    methodology of how this patch was researched.

    Reviewed-by: Kate Stewart
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     
  • Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

05 Sep, 2017

1 commit

  • Pull locking updates from Ingo Molnar:

    - Add 'cross-release' support to lockdep, which allows APIs like
    completions, where it's not the 'owner' who releases the lock, to be
    tracked. It's all activated automatically under
    CONFIG_PROVE_LOCKING=y.

    - Clean up (restructure) the x86 atomics op implementation to be more
    readable, in preparation of KASAN annotations. (Dmitry Vyukov)

    - Fix static keys (Paolo Bonzini)

    - Add killable versions of down_read() et al (Kirill Tkhai)

    - Rework and fix jump_label locking (Marc Zyngier, Paolo Bonzini)

    - Rework (and fix) tlb_flush_pending() barriers (Peter Zijlstra)

    - Remove smp_mb__before_spinlock() and convert its usages, introduce
    smp_mb__after_spinlock() (Peter Zijlstra)

    * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits)
    locking/lockdep/selftests: Fix mixed read-write ABBA tests
    sched/completion: Avoid unnecessary stack allocation for COMPLETION_INITIALIZER_ONSTACK()
    acpi/nfit: Fix COMPLETION_INITIALIZER_ONSTACK() abuse
    locking/pvqspinlock: Relax cmpxchg's to improve performance on some architectures
    smp: Avoid using two cache lines for struct call_single_data
    locking/lockdep: Untangle xhlock history save/restore from task independence
    locking/refcounts, x86/asm: Disable CONFIG_ARCH_HAS_REFCOUNT for the time being
    futex: Remove duplicated code and fix undefined behaviour
    Documentation/locking/atomic: Finish the document...
    locking/lockdep: Fix workqueue crossrelease annotation
    workqueue/lockdep: 'Fix' flush_work() annotation
    locking/lockdep/selftests: Add mixed read-write ABBA tests
    mm, locking/barriers: Clarify tlb_flush_pending() barriers
    locking/lockdep: Make CONFIG_LOCKDEP_CROSSRELEASE and CONFIG_LOCKDEP_COMPLETIONS truly non-interactive
    locking/lockdep: Explicitly initialize wq_barrier::done::map
    locking/lockdep: Rename CONFIG_LOCKDEP_COMPLETE to CONFIG_LOCKDEP_COMPLETIONS
    locking/lockdep: Reword title of LOCKDEP_CROSSRELEASE config
    locking/lockdep: Make CONFIG_LOCKDEP_CROSSRELEASE part of CONFIG_PROVE_LOCKING
    locking/refcounts, x86/asm: Implement fast refcount overflow protection
    locking/lockdep: Fix the rollback and overwrite detection logic in crossrelease
    ...

    Linus Torvalds
     

26 Aug, 2017

1 commit

  • There is code duplicated over all architecture's headers for
    futex_atomic_op_inuser. Namely op decoding, access_ok check for uaddr,
    and comparison of the result.

    Remove this duplication and leave up to the arches only the needed
    assembly which is now in arch_futex_atomic_op_inuser.

    This effectively distributes the Will Deacon's arm64 fix for undefined
    behaviour reported by UBSAN to all architectures. The fix was done in
    commit 5f16a046f8e1 (arm64: futex: Fix undefined behaviour with
    FUTEX_OP_OPARG_SHIFT usage). Look there for an example dump.

    And as suggested by Thomas, check for negative oparg too, because it was
    also reported to cause undefined behaviour report.

    Note that s390 removed access_ok check in d12a29703 ("s390/uaccess:
    remove pointless access_ok() checks") as access_ok there returns true.
    We introduce it back to the helper for the sake of simplicity (it gets
    optimized away anyway).

    Signed-off-by: Jiri Slaby
    Signed-off-by: Thomas Gleixner
    Acked-by: Russell King
    Acked-by: Michael Ellerman (powerpc)
    Acked-by: Heiko Carstens [s390]
    Acked-by: Chris Metcalf [for tile]
    Reviewed-by: Darren Hart (VMware)
    Reviewed-by: Will Deacon [core/arm64]
    Cc: linux-mips@linux-mips.org
    Cc: Rich Felker
    Cc: linux-ia64@vger.kernel.org
    Cc: linux-sh@vger.kernel.org
    Cc: peterz@infradead.org
    Cc: Benjamin Herrenschmidt
    Cc: Max Filippov
    Cc: Paul Mackerras
    Cc: sparclinux@vger.kernel.org
    Cc: Jonas Bonn
    Cc: linux-s390@vger.kernel.org
    Cc: linux-arch@vger.kernel.org
    Cc: Yoshinori Sato
    Cc: linux-hexagon@vger.kernel.org
    Cc: Helge Deller
    Cc: "James E.J. Bottomley"
    Cc: Catalin Marinas
    Cc: Matt Turner
    Cc: linux-snps-arc@lists.infradead.org
    Cc: Fenghua Yu
    Cc: Arnd Bergmann
    Cc: linux-xtensa@linux-xtensa.org
    Cc: Stefan Kristiansson
    Cc: openrisc@lists.librecores.org
    Cc: Ivan Kokshaysky
    Cc: Stafford Horne
    Cc: linux-arm-kernel@lists.infradead.org
    Cc: Richard Henderson
    Cc: Chris Zankel
    Cc: Michal Simek
    Cc: Tony Luck
    Cc: linux-parisc@vger.kernel.org
    Cc: Vineet Gupta
    Cc: Ralf Baechle
    Cc: Richard Kuo
    Cc: linux-alpha@vger.kernel.org
    Cc: Martin Schwidefsky
    Cc: linuxppc-dev@lists.ozlabs.org
    Cc: "David S. Miller"
    Link: http://lkml.kernel.org/r/20170824073105.3901-1-jslaby@suse.cz

    Jiri Slaby
     

17 Aug, 2017

1 commit

  • There is no agreed-upon definition of spin_unlock_wait()'s semantics,
    and it appears that all callers could do just as well with a lock/unlock
    pair. This commit therefore removes the underlying arch-specific
    arch_spin_unlock_wait() for all architectures providing them.

    Signed-off-by: Paul E. McKenney
    Cc:
    Cc: Peter Zijlstra
    Cc: Alan Stern
    Cc: Andrea Parri
    Cc: Linus Torvalds
    Acked-by: Will Deacon
    Acked-by: Boqun Feng

    Paul E. McKenney
     

10 Aug, 2017

1 commit

  • Those architectures that have a special atomic_set implementation also
    need a special atomic_set_release(), because for the very same reason
    WRITE_ONCE() is broken for them, smp_store_release() is too.

    The vast majority is architectures that have spinlock hash based atomic
    implementation except hexagon which seems to have a hardware 'feature'.

    The spinlock based atomics should be SC, that is, none of them appear to
    place extra barriers in atomic_cmpxchg() or any of the other SC atomic
    primitives and therefore seem to rely on their spinlock implementation
    being SC (I did not fully validate all that).

    Therefore, the normal atomic_set() is SC and can be used at
    atomic_set_release().

    Signed-off-by: Peter Zijlstra (Intel)
    Acked-by: Chris Metcalf [for tile]
    Cc: Boqun Feng
    Cc: Linus Torvalds
    Cc: Paul McKenney
    Cc: Peter Zijlstra
    Cc: Thomas Gleixner
    Cc: Will Deacon
    Cc: davem@davemloft.net
    Cc: james.hogan@imgtec.com
    Cc: jejb@parisc-linux.org
    Cc: rkuo@codeaurora.org
    Cc: vgupta@synopsys.com
    Link: http://lkml.kernel.org/r/20170609110506.yod47flaav3wgoj5@hirez.programming.kicks-ass.net
    Signed-off-by: Ingo Molnar

    Peter Zijlstra
     

10 Jul, 2017

1 commit

  • Since commit fcc8487d477a ("uapi: export all headers under uapi
    directories"), all (and only) headers under uapi directories are
    exported, but asm-generic wrappers are still exceptions.

    To complete de-coupling the uapi from kernel headers, move generic-y
    of exported headers to uapi/asm/Kbuild.

    With this change, "make headers_install" will just need to parse
    uapi/asm/Kbuild to build up exported headers.

    Also, move "generic-y += kprobes.h" up in order to keep the entries
    sorted.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     

07 Jul, 2017

3 commits

  • Merge misc updates from Andrew Morton:

    - a few hotfixes

    - various misc updates

    - ocfs2 updates

    - most of MM

    * emailed patches from Andrew Morton : (108 commits)
    mm, memory_hotplug: move movable_node to the hotplug proper
    mm, memory_hotplug: drop CONFIG_MOVABLE_NODE
    mm, memory_hotplug: drop artificial restriction on online/offline
    mm: memcontrol: account slab stats per lruvec
    mm: memcontrol: per-lruvec stats infrastructure
    mm: memcontrol: use generic mod_memcg_page_state for kmem pages
    mm: memcontrol: use the node-native slab memory counters
    mm: vmstat: move slab statistics from zone to node counters
    mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()
    mm/zswap.c: improve a size determination in zswap_frontswap_init()
    mm/zswap.c: delete an error message for a failed memory allocation in zswap_pool_create()
    mm/swapfile.c: sort swap entries before free
    mm/oom_kill: count global and memory cgroup oom kills
    mm: per-cgroup memory reclaim stats
    mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects
    mm: kmemleak: factor object reference updating out of scan_block()
    mm: kmemleak: slightly reduce the size of some structures on 64-bit architectures
    mm, mempolicy: don't check cpuset seqlock where it doesn't matter
    mm, cpuset: always use seqlock when changing task's nodemask
    mm, mempolicy: simplify rebinding mempolicies when updating cpusets
    ...

    Linus Torvalds
     
  • Pull dma-mapping infrastructure from Christoph Hellwig:
    "This is the first pull request for the new dma-mapping subsystem

    In this new subsystem we'll try to properly maintain all the generic
    code related to dma-mapping, and will further consolidate arch code
    into common helpers.

    This pull request contains:

    - removal of the DMA_ERROR_CODE macro, replacing it with calls to
    ->mapping_error so that the dma_map_ops instances are more self
    contained and can be shared across architectures (me)

    - removal of the ->set_dma_mask method, which duplicates the
    ->dma_capable one in terms of functionality, but requires more
    duplicate code.

    - various updates for the coherent dma pool and related arm code
    (Vladimir)

    - various smaller cleanups (me)"

    * tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping: (56 commits)
    ARM: dma-mapping: Remove traces of NOMMU code
    ARM: NOMMU: Set ARM_DMA_MEM_BUFFERABLE for M-class cpus
    ARM: NOMMU: Introduce dma operations for noMMU
    drivers: dma-mapping: allow dma_common_mmap() for NOMMU
    drivers: dma-coherent: Introduce default DMA pool
    drivers: dma-coherent: Account dma_pfn_offset when used with device tree
    dma: Take into account dma_pfn_offset
    dma-mapping: replace dmam_alloc_noncoherent with dmam_alloc_attrs
    dma-mapping: remove dmam_free_noncoherent
    crypto: qat - avoid an uninitialized variable warning
    au1100fb: remove a bogus dma_free_nonconsistent call
    MAINTAINERS: add entry for dma mapping helpers
    powerpc: merge __dma_set_mask into dma_set_mask
    dma-mapping: remove the set_dma_mask method
    powerpc/cell: use the dma_supported method for ops switching
    powerpc/cell: clean up fixed mapping dma_ops initialization
    tile: remove dma_supported and mapping_error methods
    xen-swiotlb: remove xen_swiotlb_set_dma_mask
    arm: implement ->dma_supported instead of ->set_dma_mask
    mips/loongson64: implement ->dma_supported instead of ->set_dma_mask
    ...

    Linus Torvalds
     
  • lruvecs are at the intersection of the NUMA node and memcg, which is the
    scope for most paging activity.

    Introduce a convenient accounting infrastructure that maintains
    statistics per node, per memcg, and the lruvec itself.

    Then convert over accounting sites for statistics that are already
    tracked in both nodes and memcgs and can be easily switched.

    [hannes@cmpxchg.org: fix crash in the new cgroup stat keeping code]
    Link: http://lkml.kernel.org/r/20170531171450.GA10481@cmpxchg.org
    [hannes@cmpxchg.org: don't track uncharged pages at all
    Link: http://lkml.kernel.org/r/20170605175254.GA8547@cmpxchg.org
    [hannes@cmpxchg.org: add missing free_percpu()]
    Link: http://lkml.kernel.org/r/20170605175354.GB8547@cmpxchg.org
    [linux@roeck-us.net: hexagon: fix build error caused by include file order]
    Link: http://lkml.kernel.org/r/20170617153721.GA4382@roeck-us.net
    Link: http://lkml.kernel.org/r/20170530181724.27197-6-hannes@cmpxchg.org
    Signed-off-by: Johannes Weiner
    Signed-off-by: Guenter Roeck
    Acked-by: Vladimir Davydov
    Cc: Josef Bacik
    Cc: Michal Hocko
    Cc: Rik van Riel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     

04 Jul, 2017

1 commit

  • Pull timer updates from Thomas Gleixner:
    "A rather large update for timers/timekeeping:

    - compat syscall consolidation (Al Viro)

    - Posix timer consolidation (Christoph Helwig / Thomas Gleixner)

    - Cleanup of the device tree based initialization for clockevents and
    clocksources (Daniel Lezcano)

    - Consolidation of the FTTMR010 clocksource/event driver (Linus
    Walleij)

    - The usual set of small fixes and updates all over the place"

    * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (93 commits)
    timers: Make the cpu base lock raw
    clocksource/drivers/mips-gic-timer: Fix an error code in 'gic_clocksource_of_init()'
    clocksource/drivers/fsl_ftm_timer: Unmap region obtained by of_iomap
    clocksource/drivers/tcb_clksrc: Make IO endian agnostic
    clocksource/drivers/sun4i: Switch to the timer-of common init
    clocksource/drivers/timer-of: Fix invalid iomap check
    Revert "ktime: Simplify ktime_compare implementation"
    clocksource/drivers: Fix uninitialized variable use in timer_of_init
    kselftests: timers: Add test for frequency step
    kselftests: timers: Fix inconsistency-check to not ignore first timestamp
    time: Add warning about imminent deprecation of CONFIG_GENERIC_TIME_VSYSCALL_OLD
    time: Clean up CLOCK_MONOTONIC_RAW time handling
    posix-cpu-timers: Make timespec to nsec conversion safe
    itimer: Make timeval to nsec conversion range limited
    timers: Fix parameter description of try_to_del_timer_sync()
    ktime: Simplify ktime_compare implementation
    clocksource/drivers/fttmr010: Factor out clock read code
    clocksource/drivers/fttmr010: Implement delay timer
    clocksource/drivers: Add timer-of common init routine
    clocksource/drivers/tcb_clksrc: Save timer context on suspend/resume
    ...

    Linus Torvalds
     

29 Jun, 2017

1 commit

  • The only user of thread_saved_pc() in non-arch-specific code was removed
    in commit 8243d5597793 ("sched/core: Remove pointless printout in
    sched_show_task()"). Remove the implementations as well.

    Some architectures use thread_saved_pc() in their arch-specific code.
    Leave their thread_saved_pc() intact.

    Signed-off-by: Tobias Klauser
    Acked-by: Geert Uytterhoeven
    Cc: Ingo Molnar
    Signed-off-by: Linus Torvalds

    Tobias Klauser
     

28 Jun, 2017

3 commits


21 Jun, 2017

1 commit


11 Jun, 2017

1 commit

  • Commit ac4691fac8ad ("hexagon: switch to RAW_COPY_USER") replaced
    __copy_to_user_hexagon() with raw_copy_to_user(), but did not catch
    all callers, resulting in the following build error.

    arch/hexagon/mm/uaccess.c: In function '__clear_user_hexagon':
    arch/hexagon/mm/uaccess.c:40:3: error:
    implicit declaration of function '__copy_to_user_hexagon'

    Fixes: ac4691fac8ad ("hexagon: switch to RAW_COPY_USER")
    Cc: Al Viro
    Acked-by: Al Viro
    Acked-by: Richard Kuo
    Signed-off-by: Guenter Roeck

    Guenter Roeck
     

04 Jun, 2017

1 commit

  • By moving the kernel side __SI_* defintions right next to the userspace
    ones we can kill the non-uapi versions of include
    include/asm-generic/siginfo.h and untangle the unholy mess of includes.

    [ tglx: Removed uapi/asm/siginfo.h from m32r, microblaze, mn10300 and score ]

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Thomas Gleixner
    Cc: linux-arch@vger.kernel.org
    Cc: Fenghua Yu
    Cc: Tony Luck
    Cc: linux-ia64@vger.kernel.org
    Cc: Arnd Bergmann
    Cc: sparclinux@vger.kernel.org
    Cc: "David S. Miller"
    Link: http://lkml.kernel.org/r/20170603190102.28866-6-hch@lst.de

    Christoph Hellwig
     

10 May, 2017

1 commit

  • Regularly, when a new header is created in include/uapi/, the developer
    forgets to add it in the corresponding Kbuild file. This error is usually
    detected after the release is out.

    In fact, all headers under uapi directories should be exported, thus it's
    useless to have an exhaustive list.

    After this patch, the following files, which were not exported, are now
    exported (with make headers_install_all):
    asm-arc/kvm_para.h
    asm-arc/ucontext.h
    asm-blackfin/shmparam.h
    asm-blackfin/ucontext.h
    asm-c6x/shmparam.h
    asm-c6x/ucontext.h
    asm-cris/kvm_para.h
    asm-h8300/shmparam.h
    asm-h8300/ucontext.h
    asm-hexagon/shmparam.h
    asm-m32r/kvm_para.h
    asm-m68k/kvm_para.h
    asm-m68k/shmparam.h
    asm-metag/kvm_para.h
    asm-metag/shmparam.h
    asm-metag/ucontext.h
    asm-mips/hwcap.h
    asm-mips/reg.h
    asm-mips/ucontext.h
    asm-nios2/kvm_para.h
    asm-nios2/ucontext.h
    asm-openrisc/shmparam.h
    asm-parisc/kvm_para.h
    asm-powerpc/perf_regs.h
    asm-sh/kvm_para.h
    asm-sh/ucontext.h
    asm-tile/shmparam.h
    asm-unicore32/shmparam.h
    asm-unicore32/ucontext.h
    asm-x86/hwcap2.h
    asm-xtensa/kvm_para.h
    drm/armada_drm.h
    drm/etnaviv_drm.h
    drm/vgem_drm.h
    linux/aspeed-lpc-ctrl.h
    linux/auto_dev-ioctl.h
    linux/bcache.h
    linux/btrfs_tree.h
    linux/can/vxcan.h
    linux/cifs/cifs_mount.h
    linux/coresight-stm.h
    linux/cryptouser.h
    linux/fsmap.h
    linux/genwqe/genwqe_card.h
    linux/hash_info.h
    linux/kcm.h
    linux/kcov.h
    linux/kfd_ioctl.h
    linux/lightnvm.h
    linux/module.h
    linux/nbd-netlink.h
    linux/nilfs2_api.h
    linux/nilfs2_ondisk.h
    linux/nsfs.h
    linux/pr.h
    linux/qrtr.h
    linux/rpmsg.h
    linux/sched/types.h
    linux/sed-opal.h
    linux/smc.h
    linux/smc_diag.h
    linux/stm.h
    linux/switchtec_ioctl.h
    linux/vfio_ccw.h
    linux/wil6210_uapi.h
    rdma/bnxt_re-abi.h

    Note that I have removed from this list the files which are generated in every
    exported directories (like .install or .install.cmd).

    Thanks to Julien Floret for the tip to get all
    subdirs with a pure makefile command.

    For the record, note that exported files for asm directories are a mix of
    files listed by:
    - include/uapi/asm-generic/Kbuild.asm;
    - arch//include/uapi/asm/Kbuild;
    - arch//include/asm/Kbuild.

    Signed-off-by: Nicolas Dichtel
    Acked-by: Daniel Vetter
    Acked-by: Russell King
    Acked-by: Mark Salter
    Acked-by: Michael Ellerman (powerpc)
    Signed-off-by: Masahiro Yamada

    Nicolas Dichtel
     

02 May, 2017

1 commit

  • Pull timer updates from Thomas Gleixner:
    "The timer departement delivers:

    - more year 2038 rework

    - a massive rework of the arm achitected timer

    - preparatory patches to allow NTP correction of clock event devices
    to avoid early expiry

    - the usual pile of fixes and enhancements all over the place"

    * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
    timer/sysclt: Restrict timer migration sysctl values to 0 and 1
    arm64/arch_timer: Mark errata handlers as __maybe_unused
    Clocksource/mips-gic: Remove redundant non devicetree init
    MIPS/Malta: Probe gic-timer via devicetree
    clocksource: Use GENMASK_ULL in definition of CLOCKSOURCE_MASK
    acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver
    clocksource: arm_arch_timer: add GTDT support for memory-mapped timer
    acpi/arm64: Add memory-mapped timer support in GTDT driver
    clocksource: arm_arch_timer: simplify ACPI support code.
    acpi/arm64: Add GTDT table parse driver
    clocksource: arm_arch_timer: split MMIO timer probing.
    clocksource: arm_arch_timer: add structs to describe MMIO timer
    clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call
    clocksource: arm_arch_timer: refactor arch_timer_needs_probing
    clocksource: arm_arch_timer: split dt-only rate handling
    x86/uv/time: Set ->min_delta_ticks and ->max_delta_ticks
    unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks
    um/time: Set ->min_delta_ticks and ->max_delta_ticks
    tile/time: Set ->min_delta_ticks and ->max_delta_ticks
    score/time: Set ->min_delta_ticks and ->max_delta_ticks
    ...

    Linus Torvalds
     

27 Apr, 2017

2 commits


25 Apr, 2017

1 commit


15 Apr, 2017

1 commit

  • In preparation for making the clockevents core NTP correction aware,
    all clockevent device drivers must set ->min_delta_ticks and
    ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
    clockevent device's rate is going to change dynamically and thus, the
    ratio of ns to ticks ceases to stay invariant.

    Make the hexagon arch's clockevent driver initialize these fields
    properly.

    This patch alone doesn't introduce any change in functionality as the
    clockevents core still looks exclusively at the (untouched) ->min_delta_ns
    and ->max_delta_ns. As soon as this has changed, a followup patch will
    purge the initialization of ->min_delta_ns and ->max_delta_ns from this
    driver.

    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: Daniel Lezcano
    Cc: Richard Cochran
    Cc: Prarit Bhargava
    Cc: Stephen Boyd
    Cc: Richard Kuo
    Cc: linux-hexagon@vger.kernel.org
    Acked-by: Richard Kuo
    Signed-off-by: Nicolai Stange
    Signed-off-by: John Stultz

    Nicolai Stange
     

02 Apr, 2017

1 commit


28 Mar, 2017

1 commit


10 Mar, 2017

1 commit

  • If an architecture uses 4level-fixup.h we don't need to do anything as
    it includes 5level-fixup.h.

    If an architecture uses pgtable-nop*d.h, define __ARCH_USE_5LEVEL_HACK
    before inclusion of the header. It makes asm-generic code to use
    5level-fixup.h.

    If an architecture has 4-level paging or folds levels on its own,
    include 5level-fixup.h directly.

    Signed-off-by: Kirill A. Shutemov
    Acked-by: Michal Hocko
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

06 Mar, 2017

2 commits


03 Mar, 2017

1 commit

  • Move the following task->mm helper APIs into a new header file,
    , to further reduce the size and complexity
    of .

    Here are how the APIs are used in various kernel files:

    # mm_alloc():
    arch/arm/mach-rpc/ecard.c
    fs/exec.c
    include/linux/sched/mm.h
    kernel/fork.c

    # __mmdrop():
    arch/arc/include/asm/mmu_context.h
    include/linux/sched/mm.h
    kernel/fork.c

    # mmdrop():
    arch/arm/mach-rpc/ecard.c
    arch/m68k/sun3/mmu_emu.c
    arch/x86/mm/tlb.c
    drivers/gpu/drm/amd/amdkfd/kfd_process.c
    drivers/gpu/drm/i915/i915_gem_userptr.c
    drivers/infiniband/hw/hfi1/file_ops.c
    drivers/vfio/vfio_iommu_spapr_tce.c
    fs/exec.c
    fs/proc/base.c
    fs/proc/task_mmu.c
    fs/proc/task_nommu.c
    fs/userfaultfd.c
    include/linux/mmu_notifier.h
    include/linux/sched/mm.h
    kernel/fork.c
    kernel/futex.c
    kernel/sched/core.c
    mm/khugepaged.c
    mm/ksm.c
    mm/mmu_context.c
    mm/mmu_notifier.c
    mm/oom_kill.c
    virt/kvm/kvm_main.c

    # mmdrop_async_fn():
    include/linux/sched/mm.h

    # mmdrop_async():
    include/linux/sched/mm.h
    kernel/fork.c

    # mmget_not_zero():
    fs/userfaultfd.c
    include/linux/sched/mm.h
    mm/oom_kill.c

    # mmput():
    arch/arc/include/asm/mmu_context.h
    arch/arc/kernel/troubleshoot.c
    arch/frv/mm/mmu-context.c
    arch/powerpc/platforms/cell/spufs/context.c
    arch/sparc/include/asm/mmu_context_32.h
    drivers/android/binder.c
    drivers/gpu/drm/etnaviv/etnaviv_gem.c
    drivers/gpu/drm/i915/i915_gem_userptr.c
    drivers/infiniband/core/umem.c
    drivers/infiniband/core/umem_odp.c
    drivers/infiniband/core/uverbs_main.c
    drivers/infiniband/hw/mlx4/main.c
    drivers/infiniband/hw/mlx5/main.c
    drivers/infiniband/hw/usnic/usnic_uiom.c
    drivers/iommu/amd_iommu_v2.c
    drivers/iommu/intel-svm.c
    drivers/lguest/lguest_user.c
    drivers/misc/cxl/fault.c
    drivers/misc/mic/scif/scif_rma.c
    drivers/oprofile/buffer_sync.c
    drivers/vfio/vfio_iommu_type1.c
    drivers/vhost/vhost.c
    drivers/xen/gntdev.c
    fs/exec.c
    fs/proc/array.c
    fs/proc/base.c
    fs/proc/task_mmu.c
    fs/proc/task_nommu.c
    fs/userfaultfd.c
    include/linux/sched/mm.h
    kernel/cpuset.c
    kernel/events/core.c
    kernel/events/uprobes.c
    kernel/exit.c
    kernel/fork.c
    kernel/ptrace.c
    kernel/sys.c
    kernel/trace/trace_output.c
    kernel/tsacct.c
    mm/memcontrol.c
    mm/memory.c
    mm/mempolicy.c
    mm/migrate.c
    mm/mmu_notifier.c
    mm/nommu.c
    mm/oom_kill.c
    mm/process_vm_access.c
    mm/rmap.c
    mm/swapfile.c
    mm/util.c
    virt/kvm/async_pf.c

    # mmput_async():
    include/linux/sched/mm.h
    kernel/fork.c
    mm/oom_kill.c

    # get_task_mm():
    arch/arc/kernel/troubleshoot.c
    arch/powerpc/platforms/cell/spufs/context.c
    drivers/android/binder.c
    drivers/gpu/drm/etnaviv/etnaviv_gem.c
    drivers/infiniband/core/umem.c
    drivers/infiniband/core/umem_odp.c
    drivers/infiniband/hw/mlx4/main.c
    drivers/infiniband/hw/mlx5/main.c
    drivers/infiniband/hw/usnic/usnic_uiom.c
    drivers/iommu/amd_iommu_v2.c
    drivers/iommu/intel-svm.c
    drivers/lguest/lguest_user.c
    drivers/misc/cxl/fault.c
    drivers/misc/mic/scif/scif_rma.c
    drivers/oprofile/buffer_sync.c
    drivers/vfio/vfio_iommu_type1.c
    drivers/vhost/vhost.c
    drivers/xen/gntdev.c
    fs/proc/array.c
    fs/proc/base.c
    fs/proc/task_mmu.c
    include/linux/sched/mm.h
    kernel/cpuset.c
    kernel/events/core.c
    kernel/exit.c
    kernel/fork.c
    kernel/ptrace.c
    kernel/sys.c
    kernel/trace/trace_output.c
    kernel/tsacct.c
    mm/memcontrol.c
    mm/memory.c
    mm/mempolicy.c
    mm/migrate.c
    mm/mmu_notifier.c
    mm/nommu.c
    mm/util.c

    # mm_access():
    fs/proc/base.c
    include/linux/sched/mm.h
    kernel/fork.c
    mm/process_vm_access.c

    # mm_release():
    arch/arc/include/asm/mmu_context.h
    fs/exec.c
    include/linux/sched/mm.h
    include/uapi/linux/sched.h
    kernel/exit.c
    kernel/fork.c

    Acked-by: Linus Torvalds
    Cc: Mike Galbraith
    Cc: Peter Zijlstra
    Cc: Thomas Gleixner
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Ingo Molnar

    Ingo Molnar
     

02 Mar, 2017

5 commits