1. 16 Nov, 2016 1 commit
    • Nicolas Pitre's avatar
      Kconfig: Introduce the "imply" keyword · 237e3ad0
      Nicolas Pitre authored
      The "imply" keyword is a weak version of "select" where the target
      config symbol can still be turned off, avoiding those pitfalls that come
      with the "select" keyword.
      This is useful e.g. with multiple drivers that want to indicate their
      ability to hook into a secondary subsystem while allowing the user to
      configure that subsystem out without also having to unset these drivers.
      Currently, the same effect can almost be achieved with:
      config DRIVER_A
      config DRIVER_B
      config DRIVER_C
      config DRIVER_D
      config SUBSYSTEM_X
      	default DRIVER_A || DRIVER_B || DRIVER_C || DRIVER_D || [...]
      This is unwieldy to maintain especially with a large number of drivers.
      Furthermore, there is no easy way to restrict the choice for SUBSYSTEM_X
      to y or n, excluding m, when some drivers are built-in. The "select"
      keyword allows for excluding m, but it excludes n as well. Hence
      this "imply" keyword.  The above becomes:
      config DRIVER_A
      	imply SUBSYSTEM_X
      config DRIVER_B
      	imply SUBSYSTEM_X
      config SUBSYSTEM_X
      This is much cleaner, and way more flexible than "select". SUBSYSTEM_X
      can still be configured out, and it can be set as a module when none of
      the drivers are configured in or all of them are modular.
      Signed-off-by: default avatarNicolas Pitre <nico@linaro.org>
      Acked-by: default avatarRichard Cochran <richardcochran@gmail.com>
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Acked-by: default avatarJohn Stultz <john.stultz@linaro.org>
      Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
      Cc: Paul Bolle <pebolle@tiscali.nl>
      Cc: linux-kbuild@vger.kernel.org
      Cc: netdev@vger.kernel.org
      Cc: Michal Marek <mmarek@suse.com>
      Cc: Edward Cree <ecree@solarflare.com>
      Link: http://lkml.kernel.org/r/1478841010-28605-2-git-send-email-nicolas.pitre@linaro.orgSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
  2. 26 Oct, 2016 2 commits
    • Douglas Anderson's avatar
      timers: Fix documentation for schedule_timeout() and similar · 4b7e9cf9
      Douglas Anderson authored
      The documentation for schedule_timeout(), schedule_hrtimeout(), and
      schedule_hrtimeout_range() all claim that the routines couldn't possibly
      return early if the task state was TASK_UNINTERRUPTIBLE. This is simply
      not true since wake_up_process() will cause those routines to exit early.
      We cannot make schedule_[hr]timeout() loop until the timeout expires if the
      task state is uninterruptible because we have users which rely on the
      existing and designed behaviour.
      Make the documentation match the (correct) implementation.
      schedule_hrtimeout() returns -EINTR even when a uninterruptible task was
      woken up. This might look strange, but making the return code depend on the
      state is too much of an effort as it would affect all the call sites. There
      is no value in doing so, but we spell it out clearly in the documentation.
      Suggested-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
      Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
      Cc: huangtao@rock-chips.com
      Cc: heiko@sntech.de
      Cc: broonie@kernel.org
      Cc: briannorris@chromium.org
      Cc: Andreas Mohr <andi@lisas.de>
      Cc: linux-rockchip@lists.infradead.org
      Cc: tony.xie@rock-chips.com
      Cc: John Stultz <john.stultz@linaro.org>
      Cc: linux@roeck-us.net
      Cc: tskd08@gmail.com
      Link: http://lkml.kernel.org/r/1477065531-30342-2-git-send-email-dianders@chromium.orgSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    • Douglas Anderson's avatar
      timers: Fix usleep_range() in the context of wake_up_process() · 6c5e9059
      Douglas Anderson authored
      Users of usleep_range() expect that it will _never_ return in less time
      than the minimum passed parameter. However, nothing in the code ensures
      this, when the sleeping task is woken by wake_up_process() or any other
      mechanism which can wake a task from uninterruptible state.
      Neither usleep_range() nor schedule_hrtimeout_range*() have any protection
      against wakeups. schedule_hrtimeout_range*() is designed this way despite
      the fact that the API documentation does not mention it.
      msleep() already has code to handle this case since it will loop as long
      as there was still time left.  usleep_range() has no such loop, add it.
      Presumably this problem was not detected before because usleep_range() is
      only used in a few places and the function is mostly used in contexts which
      are not exposed to wakeups of any form.
      An effort was made to look for users relying on the old behavior by
      looking for usleep_range() in the same file as wake_up_process().
      No problems were found by this search, though it is conceivable that
      someone could have put the sleep and wakeup in two different files.
      An effort was made to ask several upstream maintainers if they were aware
      of people relying on wake_up_process() to wake up usleep_range(). No
      maintainers were aware of that but they were aware of many people relying
      on usleep_range() never returning before the minimum.
      Reported-by: default avatarTao Huang <huangtao@rock-chips.com>
      Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
      Cc: heiko@sntech.de
      Cc: broonie@kernel.org
      Cc: briannorris@chromium.org
      Cc: Andreas Mohr <andi@lisas.de>
      Cc: linux-rockchip@lists.infradead.org
      Cc: tony.xie@rock-chips.com
      Cc: John Stultz <john.stultz@linaro.org>
      Cc: djkurtz@chromium.org
      Cc: linux@roeck-us.net
      Cc: tskd08@gmail.com
      Link: http://lkml.kernel.org/r/1477065531-30342-1-git-send-email-dianders@chromium.orgSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
  3. 24 Oct, 2016 1 commit
  4. 23 Oct, 2016 5 commits
    • Linus Torvalds's avatar
      Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs · 5ff93abc
      Linus Torvalds authored
      Pull UBI[FS] fixes from Richard Weinberger:
       "This contains fixes for issues in both UBI and UBIFS:
         - Fallout from the merge window, refactoring UBI code introduced some
         - Fixes for an UBIFS readdir bug which can cause getdents() to busy
           loop for ever and a bug in the UBIFS xattr code"
      * tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs:
        ubifs: Abort readdir upon error
        UBI: Fix crash in try_recover_peb()
        ubi: fix swapped arguments to call to ubi_alloc_aeb
        ubifs: Fix xattr_names length in exit paths
        ubifs: Rename ubifs_rename2
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · c761923c
      Linus Torvalds authored
      Pull ext4 fixes from Ted Ts'o:
       "A few bug fixes and add some missing KERN_CONT annotations"
      * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
        ext4: add missing KERN_CONT to a few more debugging uses
        fscrypto: lock inode while setting encryption policy
        ext4: correct endianness conversion in __xattr_check_inode()
        fscrypto: make XTS tweak initialization endian-independent
        ext4: do not advertise encryption support when disabled
        jbd2: fix incorrect unlock on j_list_lock
        ext4: super.c: Update logging style using KERN_CONT
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · a55da8a0
      Linus Torvalds authored
      Pull SCSI target fixes from Nicholas Bellinger:
       "Here are the outstanding target-pending fixes for v4.9-rc2.
        This includes:
         - Fix v4.1.y+ reference leak regression with concurrent TMR
           ABORT_TASK + session shutdown. (Vaibhav Tandon)
         - Enable tcm_fc w/ SCF_USE_CPUID to avoid host exchange timeouts
         - target/user error sense handling fixes. (Andy + MNC + HCH)
         - Fix iscsi-target NOP_OUT error path iscsi_cmd descriptor leak
         - Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni +
           Nixon Vincent)
         - Revert a v4.8 residual overflow change, that breaks sg_inq with
           small allocation lengths.
        There are a number of folks stress testing the v4.1.y regression fix
        in their environments, and more folks doing iser-target I/O stress
        testing atop recent v4.x.y code.
        There is also one v4.2.y+ RCU conversion regression related to
        explicit NodeACL configfs changes, that is still being tracked down"
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        target/tcm_fc: use CPU affinity for responses
        target/tcm_fc: Update debugging statements to match libfc usage
        target/tcm_fc: return detailed error in ft_sess_create()
        target/tcm_fc: print command pointer in debug message
        target: fix potential race window in target_sess_cmd_list_waiting()
        Revert "target: Fix residual overflow handling in target_complete_cmd_with_length"
        target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
        target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
        target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
        iscsi-target: fix iscsi cmd leak
        iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"
        target/user: Fix comments to not refer to data ring
        target/user: Return an error if cmd data size is too large
        target/user: Use sense_reason_t in tcmu_queue_cmd_ring
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.9-rc2' of... · e6995f22
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      Pull hwmon fixes from Guenter Roeck:
       "Couple of hwmon fixes:
        Fix a potential ERR_PTR dereference in max31790 driver, and handle
        temperature readings below 0 in adm9240 driver"
      * tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (max31790) potential ERR_PTR dereference
        hwmon: (adm9240) handle temperature readings below 0
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi · 5766e9d2
      Linus Torvalds authored
      Pull IPMI updates from Corey Minyard:
       "A small bug fix and a new driver for acting as an IPMI device.
        I was on vacation during the merge window (a long vacation) but this
        is a bug fix that should go in and a new driver that shouldn't hurt
        This has been in linux-next for a month or so"
      * tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
        ipmi: fix crash on reading version from proc after unregisted bmc
        ipmi/bt-bmc: remove redundant return value check of platform_get_resource()
        ipmi/bt-bmc: add a dependency on ARCH_ASPEED
        ipmi: Fix ioremap error handling in bt-bmc
        ipmi: add an Aspeed BT IPMI BMC driver
  5. 22 Oct, 2016 9 commits
    • Linus Torvalds's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0c2b6dc4
      Linus Torvalds authored
      Pull timer updates from Thomas Gleixner:
       "This updates contains:
         - A revert which addresses a boot failure on ARM Sun5i platforms
         - A new clocksource driver, which has been delayed beyond rc1 due to
           an interrupt driver issue which was unearthed by this driver. The
           debugging of that issue and the discussion about the proper
           solution made this driver miss the merge window. There is no point
           in delaying it for a full cycle as it completes the basic mainline
           support for the new JCore platform and does not create any risk
           outside of that platform"
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
        clocksource: Add J-Core timer/clocksource driver
        of: Add J-Core timer bindings
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3e9679a3
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
       "Three fixes, a hw-enablement and a cross-arch fix/enablement change:
         - SGI/UV fix for older platforms
         - x32 signal handling fix
         - older x86 platform bootup APIC fix
         - AVX512-4VNNIW (Neural Network Instructions) and AVX512-4FMAPS
           (Multiply Accumulation Single precision instructions) enablement.
         - move thread_info back into x86 specific code, to make life easier
           for other architectures trying to make use of
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/boot/smp: Don't try to poke disabled/non-existent APIC
        sched/core, x86: Make struct thread_info arch specific again
        x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()
        x86/platform/UV: Fix support for EFI_OLD_MEMMAP after BIOS callback updates
        x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features
        x86/vmware: Skip timer_irq_works() check on VMware
    • Linus Torvalds's avatar
      Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 86c5bf71
      Linus Torvalds authored
      Pull vmap stack fixes from Ingo Molnar:
       "This is fallout from CONFIG_HAVE_ARCH_VMAP_STACK=y on x86: stack
        accesses that used to be just somewhat questionable are now totally
        These changes try to do it without breaking the ABI: the fields are
        left there, they are just reporting zero, or reporting narrower
        information (the maps file change)"
      * 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        mm: Change vm_is_stack_for_task() to vm_is_stack_for_current()
        fs/proc: Stop trying to report thread stacks
        fs/proc: Stop reporting eip and esp in /proc/PID/stat
        mm/numa: Remove duplicated include from mprotect.c
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bfb7bfef
      Linus Torvalds authored
      Pull irq fixes from Ingo Molnar:
       "Mostly irqchip driver fixes, plus a symbol export"
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        kernel/irq: Export irq_set_parent()
        irqchip/gic: Add missing \n to CPU IF adjustment message
        irqchip/jcore: Don't show Kconfig menu item for driver
        irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
        irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
        irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
    • Linus Torvalds's avatar
      Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 90e01058
      Linus Torvalds authored
      Pull EFI fixes from Ingo Molnar:
       "Add Ard Biesheuvel as EFI co-maintainer, plus fix an ARM build bug
        with older toolchains"
      * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        efi/arm: Fix absolute relocation detection for older toolchains
        MAINTAINERS: Add myself as EFI maintainer
    • Ville Syrjälä's avatar
      x86/boot/smp: Don't try to poke disabled/non-existent APIC · ff856051
      Ville Syrjälä authored
      Apparently trying to poke a disabled or non-existent APIC
      leads to a box that doesn't even boot. Let's not do that.
      No real clue if this is the right fix, but at least my
      P3 machine boots again.
      Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: Eric Biederman <ebiederm@xmission.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Josh Poimboeuf <jpoimboe@redhat.com>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: Len Brown <len.brown@intel.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: dyoung@redhat.com
      Cc: kexec@lists.infradead.org
      Cc: stable@vger.kernel.org
      Fixes: 2a51fe08 ("arch/x86: Handle non enumerated CPU after physical hotplug")
      Link: http://lkml.kernel.org/r/1477102684-5092-1-git-send-email-ville.syrjala@linux.intel.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · dcd4693c
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "Fixes marked for stable:
         - Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
         - cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
        Fixes for code merged this cycle:
         - Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
         - Drop dump_numa_memory_topology() (Michael Ellerman)
         - Fix numa topology console print (Aneesh Kumar K.V)
         - Ignore the pkey system calls for now (Stephen Rothwell)"
      * tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc: Ignore the pkey system calls for now
        powerpc: Fix numa topology console print
        powerpc/mm: Drop dump_numa_memory_topology()
        cxl: Prevent adapter reset if an active context exists
        powerpc/boot: Fix boot on systems with uncompressed kernel image
        powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · a23b27ae
      Linus Torvalds authored
      Pull KVM fixes from Radim Krčmář:
         - avoid livelock when walking guest page tables
         - fix HYP mode static keys without CC_HAVE_ASM_GOTO
         - fix a build error without TRACEPOINTS_ENABLED
         - reject a malformed userspace configuration
         - suppress a warning without CONFIG_CPU_FREQ
         - initialize whole irq_eoi array"
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        arm/arm64: KVM: Map the BSS at HYP
        arm64: KVM: Take S1 walks into account when determining S2 write faults
        KVM: s390: reject invalid modes for runtime instrumentation
        kvm: x86: memset whole irq_eoi
        kvm/x86: Fix unused variable warning in kvm_timer_init()
        KVM: MIPS: Add missing uaccess.h include
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 02593ac6
      Linus Torvalds authored
      Pull NFS client bugfixes from Anna Schumaker:
       "Just two bugfixes this time:
        Stable bugfix:
         - Fix last_write_offset incorrectly set to page boundary
        Other bugfix:
         - Fix missing-braces warning"
      * tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        nfs4: fix missing-braces warning
        pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary
  6. 21 Oct, 2016 21 commits
  7. 20 Oct, 2016 1 commit