1. 07 Apr, 2017 4 commits
    • Omar Sandoval's avatar
      blk-mq-sched: fix crash in switch error path · 54d5329d
      Omar Sandoval authored
      In elevator_switch(), if blk_mq_init_sched() fails, we attempt to fall
      back to the original scheduler. However, at this point, we've already
      torn down the original scheduler's tags, so this causes a crash. Doing
      the fallback like the legacy elevator path is much harder for mq, so fix
      it by just falling back to none, instead.
      Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      54d5329d
    • Omar Sandoval's avatar
      blk-mq-sched: set up scheduler tags when bringing up new queues · 93252632
      Omar Sandoval authored
      If a new hardware queue is added at runtime, we don't allocate scheduler
      tags for it, leading to a crash. This hooks up the scheduler framework
      to blk_mq_{init,exit}_hctx() to make sure everything gets properly
      initialized/freed.
      Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      93252632
    • Omar Sandoval's avatar
      blk-mq-sched: refactor scheduler initialization · 6917ff0b
      Omar Sandoval authored
      Preparation cleanup for the next couple of fixes, push
      blk_mq_sched_setup() and e->ops.mq.init_sched() into a helper.
      Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      6917ff0b
    • Omar Sandoval's avatar
      blk-mq: use the right hctx when getting a driver tag fails · 81380ca1
      Omar Sandoval authored
      While dispatching requests, if we fail to get a driver tag, we mark the
      hardware queue as waiting for a tag and put the requests on a
      hctx->dispatch list to be run later when a driver tag is freed. However,
      blk_mq_dispatch_rq_list() may dispatch requests from multiple hardware
      queues if using a single-queue scheduler with a multiqueue device. If
      blk_mq_get_driver_tag() fails, it doesn't update the hardware queue we
      are processing. This means we end up using the hardware queue of the
      previous request, which may or may not be the same as that of the
      current request. If it isn't, the wrong hardware queue will end up
      waiting for a tag, and the requests will be on the wrong dispatch list,
      leading to a hang.
      
      The fix is twofold:
      
      1. Make sure we save which hardware queue we were trying to get a
         request for in blk_mq_get_driver_tag() regardless of whether it
         succeeds or not.
      2. Make blk_mq_dispatch_rq_list() take a request_queue instead of a
         blk_mq_hw_queue to make it clear that it must handle multiple
         hardware queues, since I've already messed this up on a couple of
         occasions.
      
      This didn't appear in testing with nvme and mq-deadline because nvme has
      more driver tags than the default number of scheduler tags. However,
      with the blk_mq_update_nr_hw_queues() fix, it showed up with nbd.
      Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      81380ca1
  2. 04 Apr, 2017 1 commit
  3. 02 Apr, 2017 5 commits
  4. 30 Mar, 2017 2 commits
  5. 29 Mar, 2017 12 commits
  6. 28 Mar, 2017 9 commits
  7. 27 Mar, 2017 3 commits
    • Linus Torvalds's avatar
      Merge tag 'edac_for_4.11_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · ad0376eb
      Linus Torvalds authored
      Pull EDAC updates from Borislav Petkov:
       "A new EDAC driver for the Pondicherry2 memory controller IP found in
        the Intel Apollo Lake platform and the Denverton microserver.
      
        Plus small fixlets.
      
        Normally I had this queued for 4.12 but Tony requested for the
        pnd2_edac driver to possibly land in 4.11 therefore I'm sending it to
        you now.
      
        It is a driver for new hardware which people don't have yet so it
        shouldn't cause any regressions.
      
        The couple of patches ontop of it show that Qiuxu actually did test it
        on the hardware he has access to :)"
      
      * tag 'edac_for_4.11_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
        EDAC, pnd2_edac: Fix reported DIMM number
        EDAC, pnd2_edac: Fix !EDAC_DEBUG build
        EDAC: Select DEBUG_FS
        EDAC, pnd2_edac: Add new EDAC driver for Intel SoC platforms
        EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
        EDAC, xgene: Fix wrongly spelled "procesing"
      ad0376eb
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 85f91d5c
      Linus Torvalds authored
      Pull more pin control fixes from Linus Walleij:
       "Here is a bunch of pin control fixes again
      
        A bit more than I'd like for this subsystem at this point, but what
        can I do. They are all driver fixes for hardware issues, as like "we
        forgot", "we didn't think of the fact that this could happen", "oops
        that one goes there" etc
      
         - Kconfig fixup for the TI IOdelay pinctrl-single add-on
      
         - fix up a typo in the meson i2c ao groups
      
         - switch a remapping back to use devm_ioremap() as
           devm_ioremap_resource() does not allow for sharing memory regions
      
         - do not clear the Qualcomm irq status bit in irq_unmask(), as this
           can lead to missing interrupts while the irq handler is executing
      
         - add irq_request/release_resources() on the ST driver
      
         - add a bunch of mysteriously missing pingroups for high numbered
           pins in the Qualcomm ipq4019 driver"
      
      * tag 'pinctrl-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: qcom: ipq4019: add missing pingroups for pins > 70
        pinctrl: st: add irq_request/release_resources callbacks
        pinctrl: qcom: Don't clear status bit on irq_unmask
        pinctrl: samsung: Fix memory mapping code
        pinctrl: meson-gxbb: Fix typo in i2c ao groups
        pinctrl: ti: The IODelay driver is a DRA7xxx feature so depend on that SoC
      85f91d5c
    • Linus Torvalds's avatar
      Merge tag 'm68k-for-v4.11-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · d3e68cef
      Linus Torvalds authored
      Pull m68k updates from Geert Uytterhoeven:
      
        - build warning fix
      
        - defconfig updates
      
        - wire up new statx syscall
      
      * tag 'm68k-for-v4.11-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
        m68k: Wire up statx
        m68k/defconfig: Update defconfigs for v4.11-rc1
        m68k/bitops: Correct signature of test_bit()
      d3e68cef
  8. 26 Mar, 2017 4 commits
    • Linus Torvalds's avatar
      Linux 4.11-rc4 · c02ed2e7
      Linus Torvalds authored
      c02ed2e7
    • Linus Torvalds's avatar
      Merge tag 'char-misc-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 0dc82fa5
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "A smattering of different small fixes for some random driver
        subsystems. Nothing all that major, just resolutions for reported
        issues and bugs.
      
        All have been in linux-next with no reported issues"
      
      * tag 'char-misc-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
        extcon: int3496: Set the id pin to direction-input if necessary
        extcon: int3496: Use gpiod_get instead of gpiod_get_index
        extcon: int3496: Add dependency on X86 as it's Intel specific
        extcon: int3496: Add GPIO ACPI mapping table
        extcon: int3496: Rename GPIO pins in accordance with binding
        vmw_vmci: handle the return value from pci_alloc_irq_vectors correctly
        ppdev: fix registering same device name
        parport: fix attempt to write duplicate procfiles
        auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matches
        Drivers: hv: vmbus: Don't leak memory when a channel is rescinded
        Drivers: hv: vmbus: Don't leak channel ids
        Drivers: hv: util: don't forget to init host_ts.lock
        Drivers: hv: util: move waiting for release to hv_utils_transport itself
        vmbus: remove hv_event_tasklet_disable/enable
        vmbus: use rcu for per-cpu channel list
        mei: don't wait for os version message reply
        mei: fix deadlock on mei reset
        intel_th: pci: Add Gemini Lake support
        intel_th: pci: Add Denverton SOC support
        intel_th: Don't leak module refcount on failure to activate
        ...
      0dc82fa5
    • Linus Torvalds's avatar
      Merge tag 'driver-core-4.11-rc4' of... · 9e54ef9d
      Linus Torvalds authored
      Merge tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fix from Greg KH:
       "Here is a single kernfs fix for 4.11-rc4 that resolves a reported
        issue.
      
        It has been in linux-next with no reported issues"
      
      * tag 'driver-core-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        kernfs: Check KERNFS_HAS_RELEASE before calling kernfs_release_file()
      9e54ef9d
    • Linus Torvalds's avatar
      Merge tag 'tty-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · f1638fc6
      Linus Torvalds authored
      Pull tty/serial driver fixes from Greg KH:
       "Here are some tty and serial driver fixes for 4.11-rc4.
      
        One of these fix a long-standing issue in the ldisc code that was
        found by Dmitry Vyukov with his great fuzzing work. The other fixes
        resolve other reported issues, and there is one revert of a patch in
        4.11-rc1 that wasn't correct.
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'tty-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
        tty: fix data race in tty_ldisc_ref_wait()
        tty: don't panic on OOM in tty_set_ldisc()
        Revert "tty: serial: pl011: add ttyAMA for matching pl011 console"
        tty: acpi/spcr: QDF2400 E44 checks for wrong OEM revision
        serial: 8250_dw: Fix breakage when HAVE_CLK=n
        serial: 8250_dw: Honor clk_round_rate errors in dw8250_set_termios
      f1638fc6