Commit Graph

5155 Commits

Author SHA1 Message Date
Dave Martin
7582e22038 arm64/sve: Backend logic for setting the vector length
This patch implements the core logic for changing a task's vector
length on request from userspace.  This will be used by the ptrace
and prctl frontends that are implemented in later patches.

The SVE architecture permits, but does not require, implementations
to support vector lengths that are not a power of two.  To handle
this, logic is added to check a requested vector length against a
possibly sparse bitmap of available vector lengths at runtime, so
that the best supported value can be chosen.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-11-03 15:24:16 +00:00
Will Deacon
085b30625e perf/core: Add PERF_AUX_FLAG_COLLISION to report colliding samples
The ARM SPE architecture permits an implementation to ignore a sample
if the sample is due to be taken whilst another sample is already being
produced. In this case, it is desirable to report the collision to
userspace, as they may want to lower the sample period.

This patch adds a PERF_AUX_FLAG_COLLISION flag, so that such events can
be relayed to userspace.

Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-10-18 12:53:31 +01:00
Leon Romanovsky
78b1beb099 IB/core: Fix typo in the name of the tag-matching cap struct
The tag matching functionality is implemented by mlx5 driver
by extending XRQ, however this internal kernel information was
exposed to user space applications with *xrq* name instead of *tm*.

This patch renames *xrq* to *tm* to handle that.

Fixes: 8d50505ada ("IB/uverbs: Expose XRQ capabilities")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-09-25 11:47:23 -04:00
Linus Torvalds
71aa60f67f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix NAPI poll list corruption in enic driver, from Christian
    Lamparter.

 2) Fix route use after free, from Eric Dumazet.

 3) Fix regression in reuseaddr handling, from Josef Bacik.

 4) Assert the size of control messages in compat handling since we copy
    it in from userspace twice. From Meng Xu.

 5) SMC layer bug fixes (missing RCU locking, bad refcounting, etc.)
    from Ursula Braun.

 6) Fix races in AF_PACKET fanout handling, from Willem de Bruijn.

 7) Don't use ARRAY_SIZE on spinlock array which might have zero
    entries, from Geert Uytterhoeven.

 8) Fix miscomputation of checksum in ipv6 udp code, from Subash Abhinov
    Kasiviswanathan.

 9) Push the ipv6 header properly in ipv6 GRE tunnel driver, from Xin
    Long.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits)
  inet: fix improper empty comparison
  net: use inet6_rcv_saddr to compare sockets
  net: set tb->fast_sk_family
  net: orphan frags on stand-alone ptype in dev_queue_xmit_nit
  MAINTAINERS: update git tree locations for ieee802154 subsystem
  net: prevent dst uses after free
  net: phy: Fix truncation of large IRQ numbers in phy_attached_print()
  net/smc: no close wait in case of process shut down
  net/smc: introduce a delay
  net/smc: terminate link group if out-of-sync is received
  net/smc: longer delay for client link group removal
  net/smc: adapt send request completion notification
  net/smc: adjust net_device refcount
  net/smc: take RCU read lock for routing cache lookup
  net/smc: add receive timeout check
  net/smc: add missing dev_put
  net: stmmac: Cocci spatch "of_table"
  lan78xx: Use default values loaded from EEPROM/OTP after reset
  lan78xx: Allow EEPROM write for less than MAX_EEPROM_SIZE
  lan78xx: Fix for eeprom read/write when device auto suspend
  ...
2017-09-23 05:41:27 -10:00
Linus Torvalds
c0a3a64e72 Major additions:
- sysctl and seccomp operation to discover available actions. (tyhicks)
 - new per-filter configurable logging infrastructure and sysctl. (tyhicks)
 - SECCOMP_RET_LOG to log allowed syscalls. (tyhicks)
 - SECCOMP_RET_KILL_PROCESS as the new strictest possible action.
 - self-tests for new behaviors.
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Merge tag 'seccomp-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull seccomp updates from Kees Cook:
 "Major additions:

   - sysctl and seccomp operation to discover available actions
     (tyhicks)

   - new per-filter configurable logging infrastructure and sysctl
     (tyhicks)

   - SECCOMP_RET_LOG to log allowed syscalls (tyhicks)

   - SECCOMP_RET_KILL_PROCESS as the new strictest possible action

   - self-tests for new behaviors"

[ This is the seccomp part of the security pull request during the merge
  window that was nixed due to unrelated problems   - Linus ]

* tag 'seccomp-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  samples: Unrename SECCOMP_RET_KILL
  selftests/seccomp: Test thread vs process killing
  seccomp: Implement SECCOMP_RET_KILL_PROCESS action
  seccomp: Introduce SECCOMP_RET_KILL_PROCESS
  seccomp: Rename SECCOMP_RET_KILL to SECCOMP_RET_KILL_THREAD
  seccomp: Action to log before allowing
  seccomp: Filter flag to log all actions except SECCOMP_RET_ALLOW
  seccomp: Selftest for detection of filter flag support
  seccomp: Sysctl to configure actions that are allowed to be logged
  seccomp: Operation for checking if an action is available
  seccomp: Sysctl to display available actions
  seccomp: Provide matching filter for introspection
  selftests/seccomp: Refactor RET_ERRNO tests
  selftests/seccomp: Add simple seccomp overhead benchmark
  selftests/seccomp: Add tests for basic ptrace actions
2017-09-22 16:16:41 -10:00
Florian Fainelli
19cab88726 net: ethtool: Add back transceiver type
Commit 3f1ac7a700 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API")
deprecated the ethtool_cmd::transceiver field, which was fine in
premise, except that the PHY library was actually using it to report the
type of transceiver: internal or external.

Use the first word of the reserved field to put this __u8 transceiver
field back in. It is made read-only, and we don't expect the
ETHTOOL_xLINKSETTINGS API to be doing anything with this anyway, so this
is mostly for the legacy path where we do:

ethtool_get_settings()
-> dev->ethtool_ops->get_link_ksettings()
   -> convert_link_ksettings_to_legacy_settings()

to have no information loss compared to the legacy get_settings API.

Fixes: 3f1ac7a700 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-21 15:20:40 -07:00
Dave Airlie
134dd2e616 Merge tag 'drm-amdkfd-next-2017-09-02' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes
some trivial amdkfd cleanups

* tag 'drm-amdkfd-next-2017-09-02' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: pass queue's mqd when destroying mqd
  drm/amdkfd: remove memset before memcpy
  uapi linux/kfd_ioctl.h: only use __u32 and __u64
2017-09-18 16:29:47 +10:00
Linus Torvalds
e7cdb60fd2 Merge branch 'zstd-minimal' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull zstd support from Chris Mason:
 "Nick Terrell's patch series to add zstd support to the kernel has been
  floating around for a while. After talking with Dave Sterba, Herbert
  and Phillip, we decided to send the whole thing in as one pull
  request.

  zstd is a big win in speed over zlib and in compression ratio over
  lzo, and the compression team here at FB has gotten great results
  using it in production. Nick will continue to update the kernel side
  with new improvements from the open source zstd userland code.

  Nick has a number of benchmarks for the main zstd code in his lib/zstd
  commit:

      I ran the benchmarks on a Ubuntu 14.04 VM with 2 cores and 4 GiB
      of RAM. The VM is running on a MacBook Pro with a 3.1 GHz Intel
      Core i7 processor, 16 GB of RAM, and a SSD. I benchmarked using
      `silesia.tar` [3], which is 211,988,480 B large. Run the following
      commands for the benchmark:

        sudo modprobe zstd_compress_test
        sudo mknod zstd_compress_test c 245 0
        sudo cp silesia.tar zstd_compress_test

      The time is reported by the time of the userland `cp`.
      The MB/s is computed with

        1,536,217,008 B / time(buffer size, hash)

      which includes the time to copy from userland.
      The Adjusted MB/s is computed with

        1,536,217,088 B / (time(buffer size, hash) - time(buffer size, none)).

      The memory reported is the amount of memory the compressor
      requests.

        | Method   | Size (B) | Time (s) | Ratio | MB/s    | Adj MB/s | Mem (MB) |
        |----------|----------|----------|-------|---------|----------|----------|
        | none     | 11988480 |    0.100 |     1 | 2119.88 |        - |        - |
        | zstd -1  | 73645762 |    1.044 | 2.878 |  203.05 |   224.56 |     1.23 |
        | zstd -3  | 66988878 |    1.761 | 3.165 |  120.38 |   127.63 |     2.47 |
        | zstd -5  | 65001259 |    2.563 | 3.261 |   82.71 |    86.07 |     2.86 |
        | zstd -10 | 60165346 |   13.242 | 3.523 |   16.01 |    16.13 |    13.22 |
        | zstd -15 | 58009756 |   47.601 | 3.654 |    4.45 |     4.46 |    21.61 |
        | zstd -19 | 54014593 |  102.835 | 3.925 |    2.06 |     2.06 |    60.15 |
        | zlib -1  | 77260026 |    2.895 | 2.744 |   73.23 |    75.85 |     0.27 |
        | zlib -3  | 72972206 |    4.116 | 2.905 |   51.50 |    52.79 |     0.27 |
        | zlib -6  | 68190360 |    9.633 | 3.109 |   22.01 |    22.24 |     0.27 |
        | zlib -9  | 67613382 |   22.554 | 3.135 |    9.40 |     9.44 |     0.27 |

      I benchmarked zstd decompression using the same method on the same
      machine. The benchmark file is located in the upstream zstd repo
      under `contrib/linux-kernel/zstd_decompress_test.c` [4]. The
      memory reported is the amount of memory required to decompress
      data compressed with the given compression level. If you know the
      maximum size of your input, you can reduce the memory usage of
      decompression irrespective of the compression level.

        | Method   | Time (s) | MB/s    | Adjusted MB/s | Memory (MB) |
        |----------|----------|---------|---------------|-------------|
        | none     |    0.025 | 8479.54 |             - |           - |
        | zstd -1  |    0.358 |  592.15 |        636.60 |        0.84 |
        | zstd -3  |    0.396 |  535.32 |        571.40 |        1.46 |
        | zstd -5  |    0.396 |  535.32 |        571.40 |        1.46 |
        | zstd -10 |    0.374 |  566.81 |        607.42 |        2.51 |
        | zstd -15 |    0.379 |  559.34 |        598.84 |        4.61 |
        | zstd -19 |    0.412 |  514.54 |        547.77 |        8.80 |
        | zlib -1  |    0.940 |  225.52 |        231.68 |        0.04 |
        | zlib -3  |    0.883 |  240.08 |        247.07 |        0.04 |
        | zlib -6  |    0.844 |  251.17 |        258.84 |        0.04 |
        | zlib -9  |    0.837 |  253.27 |        287.64 |        0.04 |

  I ran a long series of tests and benchmarks on the btrfs side and the
  gains are very similar to the core benchmarks Nick ran"

* 'zstd-minimal' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  squashfs: Add zstd support
  btrfs: Add zstd support
  lib: Add zstd modules
  lib: Add xxhash module
2017-09-14 17:30:49 -07:00
Linus Torvalds
dd198ce714 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace updates from Eric Biederman:
 "Life has been busy and I have not gotten half as much done this round
  as I would have liked. I delayed it so that a minor conflict
  resolution with the mips tree could spend a little time in linux-next
  before I sent this pull request.

  This includes two long delayed user namespace changes from Kirill
  Tkhai. It also includes a very useful change from Serge Hallyn that
  allows the security capability attribute to be used inside of user
  namespaces. The practical effect of this is people can now untar
  tarballs and install rpms in user namespaces. It had been suggested to
  generalize this and encode some of the namespace information
  information in the xattr name. Upon close inspection that makes the
  things that should be hard easy and the things that should be easy
  more expensive.

  Then there is my bugfix/cleanup for signal injection that removes the
  magic encoding of the siginfo union member from the kernel internal
  si_code. The mips folks reported the case where I had used FPE_FIXME
  me is impossible so I have remove FPE_FIXME from mips, while at the
  same time including a return statement in that case to keep gcc from
  complaining about unitialized variables.

  I almost finished the work to get make copy_siginfo_to_user a trivial
  copy to user. The code is available at:

     git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git neuter-copy_siginfo_to_user-v3

  But I did not have time/energy to get the code posted and reviewed
  before the merge window opened.

  I was able to see that the security excuse for just copying fields
  that we know are initialized doesn't work in practice there are buggy
  initializations that don't initialize the proper fields in siginfo. So
  we still sometimes copy unitialized data to userspace"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  Introduce v3 namespaced file capabilities
  mips/signal: In force_fcr31_sig return in the impossible case
  signal: Remove kernel interal si_code magic
  fcntl: Don't use ambiguous SIG_POLL si_codes
  prctl: Allow local CAP_SYS_ADMIN changing exe_file
  security: Use user_namespace::level to avoid redundant iterations in cap_capable()
  userns,pidns: Verify the userns for new pid namespaces
  signal/testing: Don't look for __SI_FAULT in userspace
  signal/mips: Document a conflict with SI_USER with SIGFPE
  signal/sparc: Document a conflict with SI_USER with SIGFPE
  signal/ia64: Document a conflict with SI_USER with SIGFPE
  signal/alpha: Document a conflict with SI_USER for SIGTRAP
2017-09-11 18:34:47 -07:00
Linus Torvalds
ae46654bcf ARM: SoC driver updates for v4.14
This branch contains platform-related driver updates for ARM and ARM64.
 
 Among them:
 
  - Reset driver updates:
   + New API for dealing with arrays of resets
   + Make unimplemented {de,}assert return success on shared resets
   + MSDKv1 driver
   + Removal of obsolete Gemini reset driver
   + Misc updates for sunxi and Uniphier
 
  - SoC drivers:
   + Platform SoC driver registration on Tegra
   + Shuffle of Qualcomm drivers into a submenu
   + Allwinner A64 support for SRAM
   + Renesas R-Car R3 support
   + Power domains for Rockchip RK3366
 
  - Misc updates and smaller fixes for TEE and memory driver subsystems
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This branch contains platform-related driver updates for ARM and ARM64.

  Among them:

   - Reset driver updates:
     + New API for dealing with arrays of resets
     + Make unimplemented {de,}assert return success on shared resets
     + MSDKv1 driver
     + Removal of obsolete Gemini reset driver
     + Misc updates for sunxi and Uniphier

   - SoC drivers:
     + Platform SoC driver registration on Tegra
     + Shuffle of Qualcomm drivers into a submenu
     + Allwinner A64 support for SRAM
     + Renesas R-Car R3 support
     + Power domains for Rockchip RK3366

   - Misc updates and smaller fixes for TEE and memory driver
     subsystems"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
  soc/tegra: fuse: Add missing semi-colon
  soc/tegra: Restrict SoC device registration to Tegra
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
  soc/tegra: Register SoC device
  firmware: tegra: set drvdata earlier
  memory: Convert to using %pOF instead of full_name
  soc: Convert to using %pOF instead of full_name
  bus: Convert to using %pOF instead of full_name
  firmware: Convert to using %pOF instead of full_name
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
  soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
  soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
  dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
  reset: uniphier: add analog amplifiers reset control
  reset: uniphier: add video input subsystem reset control
  ...
2017-09-10 20:40:00 -07:00
Linus Torvalds
126e76ffbf Merge branch 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block
Pull followup block layer updates from Jens Axboe:
 "I ended up splitting the main pull request for this series into two,
  mainly because of clashes between NVMe fixes that went into 4.13 after
  the for-4.14 branches were split off. This pull request is mostly
  NVMe, but not exclusively. In detail, it contains:

   - Two pull request for NVMe changes from Christoph. Nothing new on
     the feature front, basically just fixes all over the map for the
     core bits, transport, rdma, etc.

   - Series from Bart, cleaning up various bits in the BFQ scheduler.

   - Series of bcache fixes, which has been lingering for a release or
     two. Coly sent this in, but patches from various people in this
     area.

   - Set of patches for BFQ from Paolo himself, updating both
     documentation and fixing some corner cases in performance.

   - Series from Omar, attempting to now get the 4k loop support
     correct. Our confidence level is higher this time.

   - Series from Shaohua for loop as well, improving O_DIRECT
     performance and fixing a use-after-free"

* 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block: (74 commits)
  bcache: initialize dirty stripes in flash_dev_run()
  loop: set physical block size to logical block size
  bcache: fix bch_hprint crash and improve output
  bcache: Update continue_at() documentation
  bcache: silence static checker warning
  bcache: fix for gc and write-back race
  bcache: increase the number of open buckets
  bcache: Correct return value for sysfs attach errors
  bcache: correct cache_dirty_target in __update_writeback_rate()
  bcache: gc does not work when triggering by manual command
  bcache: Don't reinvent the wheel but use existing llist API
  bcache: do not subtract sectors_to_gc for bypassed IO
  bcache: fix sequential large write IO bypass
  bcache: Fix leak of bdev reference
  block/loop: remove unused field
  block/loop: fix use after free
  bfq: Use icq_to_bic() consistently
  bfq: Suppress compiler warnings about comparisons
  bfq: Check kstrtoul() return value
  bfq: Declare local functions static
  ...
2017-09-09 12:49:01 -07:00
Linus Torvalds
fbd01410e8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "The iwlwifi firmware compat fix is in here as well as some other
  stuff:

  1) Fix request socket leak introduced by BPF deadlock fix, from Eric
     Dumazet.

  2) Fix VLAN handling with TXQs in mac80211, from Johannes Berg.

  3) Missing __qdisc_drop conversions in prio and qfq schedulers, from
     Gao Feng.

  4) Use after free in netlink nlk groups handling, from Xin Long.

  5) Handle MTU update properly in ipv6 gre tunnels, from Xin Long.

  6) Fix leak of ipv6 fib tables on netns teardown, from Sabrina Dubroca
     with follow-on fix from Eric Dumazet.

  7) Need RCU and preemption disabled during generic XDP data patch,
     from John Fastabend"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
  bpf: make error reporting in bpf_warn_invalid_xdp_action more clear
  Revert "mdio_bus: Remove unneeded gpiod NULL check"
  bpf: devmap, use cond_resched instead of cpu_relax
  bpf: add support for sockmap detach programs
  net: rcu lock and preempt disable missing around generic xdp
  bpf: don't select potentially stale ri->map from buggy xdp progs
  net: tulip: Constify tulip_tbl
  net: ethernet: ti: netcp_core: no need in netif_napi_del
  davicom: Display proper debug level up to 6
  net: phy: sfp: rename dt properties to match the binding
  dt-binding: net: sfp binding documentation
  dt-bindings: add SFF vendor prefix
  dt-bindings: net: don't confuse with generic PHY property
  ip6_tunnel: fix setting hop_limit value for ipv6 tunnel
  ip_tunnel: fix setting ttl and tos value in collect_md mode
  ipv6: fix typo in fib6_net_exit()
  tcp: fix a request socket leak
  sctp: fix missing wake ups in some situations
  netfilter: xt_hashlimit: fix build error caused by 64bit division
  netfilter: xt_hashlimit: alloc hashtable with right size
  ...
2017-09-09 11:05:20 -07:00
Linus Torvalds
fbf4432ff7 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:

 - most of the rest of MM

 - a small number of misc things

 - lib/ updates

 - checkpatch

 - autofs updates

 - ipc/ updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (126 commits)
  ipc: optimize semget/shmget/msgget for lots of keys
  ipc/sem: play nicer with large nsops allocations
  ipc/sem: drop sem_checkid helper
  ipc: convert kern_ipc_perm.refcount from atomic_t to refcount_t
  ipc: convert sem_undo_list.refcnt from atomic_t to refcount_t
  ipc: convert ipc_namespace.count from atomic_t to refcount_t
  kcov: support compat processes
  sh: defconfig: cleanup from old Kconfig options
  mn10300: defconfig: cleanup from old Kconfig options
  m32r: defconfig: cleanup from old Kconfig options
  drivers/pps: use surrounding "if PPS" to remove numerous dependency checks
  drivers/pps: aesthetic tweaks to PPS-related content
  cpumask: make cpumask_next() out-of-line
  kmod: move #ifdef CONFIG_MODULES wrapper to Makefile
  kmod: split off umh headers into its own file
  MAINTAINERS: clarify kmod is just a kernel module loader
  kmod: split out umh code into its own file
  test_kmod: flip INT checks to be consistent
  test_kmod: remove paranoid UINT_MAX check on uint range processing
  vfat: deduplicate hex2bin()
  ...
2017-09-09 10:30:07 -07:00
Daniel Borkmann
9beb8bedb0 bpf: make error reporting in bpf_warn_invalid_xdp_action more clear
Differ between illegal XDP action code and just driver
unsupported one to provide better feedback when we throw
a one-time warning here. Reason is that with 814abfabef
("xdp: add bpf_redirect helper function") not all drivers
support the new XDP return code yet and thus they will
fall into their 'default' case when checking for return
codes after program return, which then triggers a
bpf_warn_invalid_xdp_action() stating that the return
code is illegal, but from XDP perspective it's not.

I decided not to place something like a XDP_ACT_MAX define
into uapi i) given we don't have this either for all other
program types, ii) future action codes could have further
encoding there, which would render such define unsuitable
and we wouldn't be able to rip it out again, and iii) we
rarely add new action codes.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-08 21:13:09 -07:00
Robert P. J. Day
a2d8180301 drivers/pps: aesthetic tweaks to PPS-related content
Collection of aesthetic adjustments to various PPS-related files,
directories and Documentation, some quite minor just for the sake of
consistency, including:

 * Updated example of pps device tree node (courtesy Rodolfo G.)
 * "PPS-API" -> "PPS API"
 * "pps_source_info_s" -> "pps_source_info"
 * "ktimer driver" -> "pps-ktimer driver"
 * "ppstest /dev/pps0" -> "ppstest /dev/pps1" to match example
 * Add missing PPS-related entries to MAINTAINERS file
 * Other trivialities

Link: http://lkml.kernel.org/r/alpine.LFD.2.20.1708261048220.8106@localhost.localdomain
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-08 18:26:51 -07:00
Tomohiro Kusumi
1f28c5d055 autofs: remove unused AUTOFS_IOC_EXPIRE_DIRECT/INDIRECT
These are not used by either kernel or userspace, although
AUTOFS_IOC_EXPIRE_DIRECT once seems to have been used by userspace in
around 2006-2008, which was technically just an alias of the existing
ioctl AUTOFS_IOC_EXPIRE_MULTI.

ioctls for autofs are already complicated enough that they could be
removed unless these are staying here to be able to compile userspace code
of certain period of time from a decade ago.

Edit: raven@themaw.net
Yes, this is indeed very old and anything that still uses must
be updated becuase it will be using broken functionality.
End edit: raven@themaw.net

Link: http://lkml.kernel.org/r/150285067347.4670.11494624644273072003.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-08 18:26:50 -07:00
Ian Kent
3dd8f7c3b7 autofs: make dev ioctl version and ismountpoint user accessible
Some of the autofs miscellaneous device ioctls need to be accessable to
user space applications without CAP_SYS_ADMIN to get information about
autofs mounts.

Link: http://lkml.kernel.org/r/150216642517.11652.2338933266137331637.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Colin Walters <walters@redhat.com>
Cc: Ondrej Holy <oholy@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-08 18:26:50 -07:00
Linus Torvalds
0d519f2d1e pci-v4.14-changes
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Merge tag 'pci-v4.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - add enhanced Downstream Port Containment support, which prints more
   details about Root Port Programmed I/O errors (Dongdong Liu)

 - add Layerscape ls1088a and ls2088a support (Hou Zhiqiang)

 - add MediaTek MT2712 and MT7622 support (Ryder Lee)

 - add MediaTek MT2712 and MT7622 MSI support (Honghui Zhang)

 - add Qualcom IPQ8074 support (Varadarajan Narayanan)

 - add R-Car r8a7743/5 device tree support (Biju Das)

 - add Rockchip per-lane PHY support for better power management (Shawn
   Lin)

 - fix IRQ mapping for hot-added devices by replacing the
   pci_fixup_irqs() boot-time design with a host bridge hook called at
   probe-time (Lorenzo Pieralisi, Matthew Minter)

 - fix race when enabling two devices that results in upstream bridge
   not being enabled correctly (Srinath Mannam)

 - fix pciehp power fault infinite loop (Keith Busch)

 - fix SHPC bridge MSI hotplug events by enabling bus mastering
   (Aleksandr Bezzubikov)

 - fix a VFIO issue by correcting PCIe capability sizes (Alex
   Williamson)

 - fix an INTD issue on Xilinx and possibly other drivers by unifying
   INTx IRQ domain support (Paul Burton)

 - avoid IOMMU stalls by marking AMD Stoney GPU ATS as broken (Joerg
   Roedel)

 - allow APM X-Gene device assignment to guests by adding an ACS quirk
   (Feng Kan)

 - fix driver crashes by disabling Extended Tags on Broadcom HT2100
   (Extended Tags support is required for PCIe Receivers but not
   Requesters, and we now enable them by default when Requesters support
   them) (Sinan Kaya)

 - fix MSIs for devices that use phantom RIDs for DMA by assuming MSIs
   use the real Requester ID (not a phantom RID) (Robin Murphy)

 - prevent assignment of Intel VMD children to guests (which may be
   supported eventually, but isn't yet) by not associating an IOMMU with
   them (Jon Derrick)

 - fix Intel VMD suspend/resume by releasing IRQs on suspend (Scott
   Bauer)

 - fix a Function-Level Reset issue with Intel 750 NVMe by waiting
   longer (up to 60sec instead of 1sec) for device to become ready
   (Sinan Kaya)

 - fix a Function-Level Reset issue on iProc Stingray by working around
   hardware defects in the CRS implementation (Oza Pawandeep)

 - fix an issue with Intel NVMe P3700 after an iProc reset by adding a
   delay during shutdown (Oza Pawandeep)

 - fix a Microsoft Hyper-V lockdep issue by polling instead of blocking
   in compose_msi_msg() (Stephen Hemminger)

 - fix a wireless LAN driver timeout by clearing DesignWare MSI
   interrupt status after it is handled, not before (Faiz Abbas)

 - fix DesignWare ATU enable checking (Jisheng Zhang)

 - reduce Layerscape dependencies on the bootloader by doing more
   initialization in the driver (Hou Zhiqiang)

 - improve Intel VMD performance allowing allocation of more IRQ vectors
   than present CPUs (Keith Busch)

 - improve endpoint framework support for initial DMA mask, different
   BAR sizes, configurable page sizes, MSI, test driver, etc (Kishon
   Vijay Abraham I, Stan Drozd)

 - rework CRS support to add periodic messages while we poll during
   enumeration and after Function-Level Reset and prepare for possible
   other uses of CRS (Sinan Kaya)

 - clean up Root Port AER handling by removing unnecessary code and
   moving error handler methods to struct pcie_port_service_driver
   (Christoph Hellwig)

 - clean up error handling paths in various drivers (Bjorn Andersson,
   Fabio Estevam, Gustavo A. R. Silva, Harunobu Kurokawa, Jeffy Chen,
   Lorenzo Pieralisi, Sergei Shtylyov)

 - clean up SR-IOV resource handling by disabling VF decoding before
   updating the corresponding resource structs (Gavin Shan)

 - clean up DesignWare-based drivers by unifying quirks to update Class
   Code and Interrupt Pin and related handling of write-protected
   registers (Hou Zhiqiang)

 - clean up by adding empty generic pcibios_align_resource() and
   pcibios_fixup_bus() and removing empty arch-specific implementations
   (Palmer Dabbelt)

 - request exclusive reset control for several drivers to allow cleanup
   elsewhere (Philipp Zabel)

 - constify various structures (Arvind Yadav, Bhumika Goyal)

 - convert from full_name() to %pOF (Rob Herring)

 - remove unused variables from iProc, HiSi, Altera, Keystone (Shawn
   Lin)

* tag 'pci-v4.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (170 commits)
  PCI: xgene: Clean up whitespace
  PCI: xgene: Define XGENE_PCI_EXP_CAP and use generic PCI_EXP_RTCTL offset
  PCI: xgene: Fix platform_get_irq() error handling
  PCI: xilinx-nwl: Fix platform_get_irq() error handling
  PCI: rockchip: Fix platform_get_irq() error handling
  PCI: altera: Fix platform_get_irq() error handling
  PCI: spear13xx: Fix platform_get_irq() error handling
  PCI: artpec6: Fix platform_get_irq() error handling
  PCI: armada8k: Fix platform_get_irq() error handling
  PCI: dra7xx: Fix platform_get_irq() error handling
  PCI: exynos: Fix platform_get_irq() error handling
  PCI: iproc: Clean up whitespace
  PCI: iproc: Rename PCI_EXP_CAP to IPROC_PCI_EXP_CAP
  PCI: iproc: Add 500ms delay during device shutdown
  PCI: Fix typos and whitespace errors
  PCI: Remove unused "res" variable from pci_resource_io()
  PCI: Correct kernel-doc of pci_vpd_srdt_size(), pci_vpd_srdt_tag()
  PCI/AER: Reformat AER register definitions
  iommu/vt-d: Prevent VMD child devices from being remapping targets
  x86/PCI: Use is_vmd() rather than relying on the domain number
  ...
2017-09-08 15:47:43 -07:00
Linus Torvalds
0756b7fbb6 First batch of KVM changes for 4.14
Common:
  - improve heuristic for boosting preempted spinlocks by ignoring VCPUs
    in user mode
 
 ARM:
  - fix for decoding external abort types from guests
 
  - added support for migrating the active priority of interrupts when
    running a GICv2 guest on a GICv3 host
 
  - minor cleanup
 
 PPC:
  - expose storage keys to userspace
 
  - merge powerpc/topic/ppc-kvm branch that contains
    find_linux_pte_or_hugepte and POWER9 thread management cleanup
 
  - merge kvm-ppc-fixes with a fix that missed 4.13 because of vacations
 
  - fixes
 
 s390:
  - merge of topic branch tlb-flushing from the s390 tree to get the
    no-dat base features
 
  - merge of kvm/master to avoid conflicts with additional sthyi fixes
 
  - wire up the no-dat enhancements in KVM
 
  - multiple epoch facility (z14 feature)
 
  - Configuration z/Architecture Mode
 
  - more sthyi fixes
 
  - gdb server range checking fix
 
  - small code cleanups
 
 x86:
  - emulate Hyper-V TSC frequency MSRs
 
  - add nested INVPCID
 
  - emulate EPTP switching VMFUNC
 
  - support Virtual GIF
 
  - support 5 level page tables
 
  - speedup nested VM exits by packing byte operations
 
  - speedup MMIO by using hardware provided physical address
 
  - a lot of fixes and cleanups, especially nested
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Merge tag 'kvm-4.14-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Radim Krčmář:
 "First batch of KVM changes for 4.14

  Common:
   - improve heuristic for boosting preempted spinlocks by ignoring
     VCPUs in user mode

  ARM:
   - fix for decoding external abort types from guests

   - added support for migrating the active priority of interrupts when
     running a GICv2 guest on a GICv3 host

   - minor cleanup

  PPC:
   - expose storage keys to userspace

   - merge kvm-ppc-fixes with a fix that missed 4.13 because of
     vacations

   - fixes

  s390:
   - merge of kvm/master to avoid conflicts with additional sthyi fixes

   - wire up the no-dat enhancements in KVM

   - multiple epoch facility (z14 feature)

   - Configuration z/Architecture Mode

   - more sthyi fixes

   - gdb server range checking fix

   - small code cleanups

  x86:
   - emulate Hyper-V TSC frequency MSRs

   - add nested INVPCID

   - emulate EPTP switching VMFUNC

   - support Virtual GIF

   - support 5 level page tables

   - speedup nested VM exits by packing byte operations

   - speedup MMIO by using hardware provided physical address

   - a lot of fixes and cleanups, especially nested"

* tag 'kvm-4.14-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (67 commits)
  KVM: arm/arm64: Support uaccess of GICC_APRn
  KVM: arm/arm64: Extract GICv3 max APRn index calculation
  KVM: arm/arm64: vITS: Drop its_ite->lpi field
  KVM: arm/arm64: vgic: constify seq_operations and file_operations
  KVM: arm/arm64: Fix guest external abort matching
  KVM: PPC: Book3S HV: Fix memory leak in kvm_vm_ioctl_get_htab_fd
  KVM: s390: vsie: cleanup mcck reinjection
  KVM: s390: use WARN_ON_ONCE only for checking
  KVM: s390: guestdbg: fix range check
  KVM: PPC: Book3S HV: Report storage key support to userspace
  KVM: PPC: Book3S HV: Fix case where HDEC is treated as 32-bit on POWER9
  KVM: PPC: Book3S HV: Fix invalid use of register expression
  KVM: PPC: Book3S HV: Fix H_REGISTER_VPA VPA size validation
  KVM: PPC: Book3S HV: Fix setting of storage key in H_ENTER
  KVM: PPC: e500mc: Fix a NULL dereference
  KVM: PPC: e500: Fix some NULL dereferences on error
  KVM: PPC: Book3S HV: Protect updates to spapr_tce_tables list
  KVM: s390: we are always in czam mode
  KVM: s390: expose no-DAT to guest and migration support
  KVM: s390: sthyi: remove invalid guest write access
  ...
2017-09-08 15:18:36 -07:00
Radim Krčmář
5f54c8b2d4 Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
This fix was intended for 4.13, but didn't get in because both
maintainers were on vacation.

Paul Mackerras:
 "It adds mutual exclusion between list_add_rcu and list_del_rcu calls
  on the kvm->arch.spapr_tce_tables list.  Without this, userspace could
  potentially trigger corruption of the list and cause a host crash or
  worse."
2017-09-08 14:40:43 +02:00
Linus Torvalds
460352c2f1 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF, reiserfs, quota, fsnotify cleanups from Jan Kara:
 "Several UDF, reiserfs, quota and fsnotify cleanups.

  Note that there is also a patch updating MAINTAINERS entry for
  notification subsystem to point to me as a maintainer since current
  entries are stale"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fsnotify: make dnotify_fsnotify_ops const
  isofs: Delete an unnecessary variable initialisation in isofs_read_inode()
  isofs: Adjust four checks for null pointers
  isofs: Delete an error message for a failed memory allocation in isofs_read_inode()
  quota_v2: Delete an error message for a failed memory allocation in v2_read_file_info()
  fs-udf: Delete an error message for a failed memory allocation in two functions
  fs-udf: Improve six size determinations
  fs-udf: Adjust two checks for null pointers
  reiserfs: fix spelling mistake: "tranasction" -> "transaction"
  MAINTAINERS: Update entries for notification subsystem
  uapi/linux/quota.h: Do not include linux/errno.h
2017-09-07 14:53:17 -07:00
Linus Torvalds
c0da4fa0d1 media updates for v4.14-rc1
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Merge tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "Brazil's Independence Day pull request :-)

  This is one of the biggest media pull requests, with 625 patches
  affecting almost all parts of media (RC, DVB, V4L2, CEC, docs).

  This contains:

   - A lot of new drivers:
     * DVB frontends: mxl5xx, stv0910, stv6111;
     * camera flash: as3645a led driver;
     * HDMI receiver: adv748X;
     * camera sensor: Omnivision 6650 5M driver (ov6650);
     * HDMI CEC: ao-cec meson driver;
     * V4L2: Qualcom camss driver;
     * Remote controller: gpio-ir-tx, pwm-ir-tx and zx-irdec drivers.

   - The DDbridge DVB driver got a massive update, with makes it in sync
     with modern hardware from that vendor;

   - There's an important milestone on this series: the DVB
     documentation was written in 2003, but only started to be updated
     in 2007. It also used to contain several gaps from the time it was
     kept out of tree, mentioning error codes and device nodes that
     never existed upstream. On this series, it received a massive
     update: all non-deprecated digital TV APIs are now in sync with the
     current implementation;

   - Some DVB APIs that aren't used by any upstream driver got removed;

   - Other parts of the media documentation algo got updated, fixing
     some bugs on its PDF output and making it compatible with Sphinx
     version 1.6.

     As the number of hacks required to build PDF output reduced, I hope
     we'll have less troubles as newer versions of our documentation
     toolchain are released (famous last words);

   - As usual, lots of driver cleanups and improvements"

* tag 'media/v4.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (624 commits)
  media: leds: as3645a: add V4L2_FLASH_LED_CLASS dependency
  media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftovers
  media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay"
  media: staging: atomisp: sh_css_calloc shall return a pointer to the allocated space
  media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls"
  media: add qcom_camss.rst to v4l-drivers rst file
  media: dvb headers: make checkpatch happier
  media: dvb uapi: move frontend legacy API to another part of the book
  media: pixfmt-srggb12p.rst: better format the table for PDF output
  media: docs-rst: media: Don't use \small for V4L2_PIX_FMT_SRGGB10 documentation
  media: index.rst: don't write "Contents:" on PDF output
  media: pixfmt*.rst: replace a two dots by a comma
  media: vidioc-g-fmt.rst: adjust table format
  media: vivid.rst: add a blank line to correct ReST format
  media: v4l2 uapi book: get rid of driver programming's chapter
  media: format.rst: use the right markup for important notes
  media: docs-rst: cardlists: change their format to flat-tables
  media: em28xx-cardlist.rst: update to reflect last changes
  media: v4l2-event.rst: adjust table to fit on PDF output
  media: docs: don't show ToC for each part on PDF output
  ...
2017-09-07 12:53:14 -07:00
Linus Torvalds
d969443064 sound updates for 4.14-rc1
We have touched quite a lot of files but with fewer changes at this
 cycle; as you can see, most of changes are trivial fixes, especially
 constification patches.  Among the massive attacks by constification
 gangs, we had a few core changes (mostly for ASoC core), as well the
 fixes and the updates by major vendors.  Some highlights are below:
 
 ALSA core:
 - Fix possible races in control API user-TLV codes
 - Small cleanup of PCM core
 
 ASoC:
 - Continued work for componentization; still half-baked, but we're
   certainly progressing
 - Use of devres for jack detection GPIOs, rather as a cleanup
 - Jack detection support for Qualcomm MSM8916
 - Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
   systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
   WM8523
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Merge tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "We have touched quite a lot of files but with fewer changes at this
  cycle; as you can see, most of changes are trivial fixes, especially
  constification patches.

  Among the massive attacks by constification gangs, we had a few core
  changes (mostly for ASoC core), as well the fixes and the updates by
  major vendors.

  Some highlights:

  ALSA core:

   - Fix possible races in control API user-TLV codes

   - Small cleanup of PCM core

  ASoC:

   - Continued work for componentization; still half-baked, but we're
     certainly progressing

   - Use of devres for jack detection GPIOs, rather as a cleanup

   - Jack detection support for Qualcomm MSM8916

   - Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
     systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
     WM8523"

* tag 'sound-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (512 commits)
  ALSA: hda/ca0132 - Fix memory leak at error path
  ALSA: hda: Fix forget to free resource in error handling code path in hda_codec_driver_probe
  ASoC: cs43130: Fix unused compiler warnings for PM runtime
  ASoC: cs43130: Fix possible Oops with invalid dev_id
  ASoC: cs43130: fix spelling mistake: "irq_occurrance" -> "irq_occurrence"
  ALSA: atmel: Remove leftovers of AVR32 removal
  ALSA: atmel: convert AC97c driver to GPIO descriptor API
  ALSA: hda/realtek - Enable jack detection function for Intel ALC700
  ALSA: hda: Fix regression of hdmi eld control created based on invalid pcm
  ASoC: Intel: Skylake: Add IPC to configure the copier secondary pins
  ASoC: add missing compile rule for max98371
  ASoC: add missing compile rule for sirf-audio-codec
  ASoC: add missing compile rule for max98371
  ASoC: cs43130: Add devicetree bindings for CS43130
  ASoC: cs43130: Add support for CS43130 codec
  ASoC: make clock direction configurable in asoc-simple
  ALSA: ctxfi: Remove null check before kfree
  ASoC: max98927: Changed device property read function
  ASoC: max98927: Modified DAPM widget and map to enable/disable VI sense path
  ASoC: max98927: Added PM suspend and resume function
  ...
2017-09-07 12:44:53 -07:00
Linus Torvalds
3645e6d0dc Merge tag 'md/4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Pull MD updates from Shaohua Li:
 "This update mainly fixes bugs:

   - Make raid5 ppl support several ppl from Pawel

   - Several raid5-cache bug fixes from Song

   - Bitmap fixes from Neil and Me

   - One raid1/10 regression fix since 4.12 from Me

   - Other small fixes and cleanup"

* tag 'md/4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  md/bitmap: disable bitmap_resize for file-backed bitmaps.
  raid5-ppl: Recovery support for multiple partial parity logs
  md: Runtime support for multiple ppls
  md/raid0: attach correct cgroup info in bio
  lib/raid6: align AVX512 constants to 512 bits, not bytes
  raid5: remove raid5_build_block
  md/r5cache: call mddev_lock/unlock() in r5c_journal_mode_show
  md: replace seq_release_private with seq_release
  md: notify about new spare disk in the container
  md/raid1/10: reset bio allocated from mempool
  md/raid5: release/flush io in raid5_do_work()
  md/bitmap: copy correct data for bitmap super
2017-09-07 12:41:48 -07:00
Linus Torvalds
a0725ab0c7 Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block
Pull block layer updates from Jens Axboe:
 "This is the first pull request for 4.14, containing most of the code
  changes. It's a quiet series this round, which I think we needed after
  the churn of the last few series. This contains:

   - Fix for a registration race in loop, from Anton Volkov.

   - Overflow complaint fix from Arnd for DAC960.

   - Series of drbd changes from the usual suspects.

   - Conversion of the stec/skd driver to blk-mq. From Bart.

   - A few BFQ improvements/fixes from Paolo.

   - CFQ improvement from Ritesh, allowing idling for group idle.

   - A few fixes found by Dan's smatch, courtesy of Dan.

   - A warning fixup for a race between changing the IO scheduler and
     device remova. From David Jeffery.

   - A few nbd fixes from Josef.

   - Support for cgroup info in blktrace, from Shaohua.

   - Also from Shaohua, new features in the null_blk driver to allow it
     to actually hold data, among other things.

   - Various corner cases and error handling fixes from Weiping Zhang.

   - Improvements to the IO stats tracking for blk-mq from me. Can
     drastically improve performance for fast devices and/or big
     machines.

   - Series from Christoph removing bi_bdev as being needed for IO
     submission, in preparation for nvme multipathing code.

   - Series from Bart, including various cleanups and fixes for switch
     fall through case complaints"

* 'for-4.14/block' of git://git.kernel.dk/linux-block: (162 commits)
  kernfs: checking for IS_ERR() instead of NULL
  drbd: remove BIOSET_NEED_RESCUER flag from drbd_{md_,}io_bio_set
  drbd: Fix allyesconfig build, fix recent commit
  drbd: switch from kmalloc() to kmalloc_array()
  drbd: abort drbd_start_resync if there is no connection
  drbd: move global variables to drbd namespace and make some static
  drbd: rename "usermode_helper" to "drbd_usermode_helper"
  drbd: fix race between handshake and admin disconnect/down
  drbd: fix potential deadlock when trying to detach during handshake
  drbd: A single dot should be put into a sequence.
  drbd: fix rmmod cleanup, remove _all_ debugfs entries
  drbd: Use setup_timer() instead of init_timer() to simplify the code.
  drbd: fix potential get_ldev/put_ldev refcount imbalance during attach
  drbd: new disk-option disable-write-same
  drbd: Fix resource role for newly created resources in events2
  drbd: mark symbols static where possible
  drbd: Send P_NEG_ACK upon write error in protocol != C
  drbd: add explicit plugging when submitting batches
  drbd: change list_for_each_safe to while(list_first_entry_or_null)
  drbd: introduce drbd_recv_header_maybe_unplug
  ...
2017-09-07 11:59:42 -07:00
Bjorn Helgaas
33db87de6a Merge branch 'pci/misc' into next
* pci/misc:
  PCI: Fix PCIe capability sizes
  PCI: Convert to using %pOF instead of full_name()
  PCI: Constify endpoint pci_epf_type device_type
  PCI: Constify bin_attribute structures
  PCI: Constify hotplug pci_device_id structures
  PCI: Constify hotplug attribute_group structures
  PCI: Constify label attribute_group structures
  PCI: Constify sysfs attribute_group structures
2017-09-07 13:24:16 -05:00
Bjorn Helgaas
18f20670e0 Merge branch 'pci/dpc' into next
* pci/dpc:
  PCI/DPC: Add local struct device pointers
  PCI/DPC: Add eDPC support
2017-09-07 13:24:13 -05:00
Linus Torvalds
d34fc1adf0 Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:

 - various misc bits

 - DAX updates

 - OCFS2

 - most of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (119 commits)
  mm,fork: introduce MADV_WIPEONFORK
  x86,mpx: make mpx depend on x86-64 to free up VMA flag
  mm: add /proc/pid/smaps_rollup
  mm: hugetlb: clear target sub-page last when clearing huge page
  mm: oom: let oom_reap_task and exit_mmap run concurrently
  swap: choose swap device according to numa node
  mm: replace TIF_MEMDIE checks by tsk_is_oom_victim
  mm, oom: do not rely on TIF_MEMDIE for memory reserves access
  z3fold: use per-cpu unbuddied lists
  mm, swap: don't use VMA based swap readahead if HDD is used as swap
  mm, swap: add sysfs interface for VMA based swap readahead
  mm, swap: VMA based swap readahead
  mm, swap: fix swap readahead marking
  mm, swap: add swap readahead hit statistics
  mm/vmalloc.c: don't reinvent the wheel but use existing llist API
  mm/vmstat.c: fix wrong comment
  selftests/memfd: add memfd_create hugetlbfs selftest
  mm/shmem: add hugetlbfs support to memfd_create()
  mm, devm_memremap_pages: use multi-order radix for ZONE_DEVICE lookups
  mm/vmalloc.c: halve the number of comparisons performed in pcpu_get_vm_areas()
  ...
2017-09-06 20:49:49 -07:00
Rik van Riel
d2cd9ede6e mm,fork: introduce MADV_WIPEONFORK
Introduce MADV_WIPEONFORK semantics, which result in a VMA being empty
in the child process after fork.  This differs from MADV_DONTFORK in one
important way.

If a child process accesses memory that was MADV_WIPEONFORK, it will get
zeroes.  The address ranges are still valid, they are just empty.

If a child process accesses memory that was MADV_DONTFORK, it will get a
segmentation fault, since those address ranges are no longer valid in
the child after fork.

Since MADV_DONTFORK also seems to be used to allow very large programs
to fork in systems with strict memory overcommit restrictions, changing
the semantics of MADV_DONTFORK might break existing programs.

MADV_WIPEONFORK only works on private, anonymous VMAs.

The use case is libraries that store or cache information, and want to
know that they need to regenerate it in the child process after fork.

Examples of this would be:
 - systemd/pulseaudio API checks (fail after fork) (replacing a getpid
   check, which is too slow without a PID cache)
 - PKCS#11 API reinitialization check (mandated by specification)
 - glibc's upcoming PRNG (reseed after fork)
 - OpenSSL PRNG (reseed after fork)

The security benefits of a forking server having a re-inialized PRNG in
every child process are pretty obvious.  However, due to libraries
having all kinds of internal state, and programs getting compiled with
many different versions of each library, it is unreasonable to expect
calling programs to re-initialize everything manually after fork.

A further complication is the proliferation of clone flags, programs
bypassing glibc's functions to call clone directly, and programs calling
unshare, causing the glibc pthread_atfork hook to not get called.

It would be better to have the kernel take care of this automatically.

The patch also adds MADV_KEEPONFORK, to undo the effects of a prior
MADV_WIPEONFORK.

This is similar to the OpenBSD minherit syscall with MAP_INHERIT_ZERO:

    https://man.openbsd.org/minherit.2

[akpm@linux-foundation.org: numerically order arch/parisc/include/uapi/asm/mman.h #defines]
Link: http://lkml.kernel.org/r/20170811212829.29186-3-riel@redhat.com
Signed-off-by: Rik van Riel <riel@redhat.com>
Reported-by: Florian Weimer <fweimer@redhat.com>
Reported-by: Colm MacCártaigh <colm@allcosts.net>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Cc: <linux-api@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:30 -07:00
Mike Kravetz
749df87bd7 mm/shmem: add hugetlbfs support to memfd_create()
This patch came out of discussions in this e-mail thread:
  http://lkml.kernel.org/r/1499357846-7481-1-git-send-email-mike.kravetz%40oracle.com

The Oracle JVM team is developing a new garbage collection model.  This
new model requires multiple mappings of the same anonymous memory.  One
straight forward way to accomplish this is with memfd_create.  They can
use the returned fd to create multiple mappings of the same memory.

The JVM today has an option to use (static hugetlb) huge pages.  If this
option is specified, they would like to use the same garbage collection
model requiring multiple mappings to the same memory.  Using hugetlbfs,
it is possible to explicitly mount a filesystem and specify file paths
in order to get an fd that can be used for multiple mappings.  However,
this introduces additional system admin work and coordination.

Ideally they would like to get a hugetlbfs fd without requiring explicit
mounting of a filesystem.  Today, mmap and shmget can make use of
hugetlbfs without explicitly mounting a filesystem.  The patch adds this
functionality to memfd_create.

Add a new flag MFD_HUGETLB to memfd_create() that will specify the file
to be created resides in the hugetlbfs filesystem.  This is the generic
hugetlbfs filesystem not associated with any specific mount point.  As
with other system calls that request hugetlbfs backed pages, there is
the ability to encode huge page size in the flag arguments.

hugetlbfs does not support sealing operations, therefore specifying
MFD_ALLOW_SEALING with MFD_HUGETLB will result in EINVAL.

Of course, the memfd_man page would need updating if this type of
functionality moves forward.

Link: http://lkml.kernel.org/r/1502149672-7759-2-git-send-email-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Andrea Arcangeli
a36985d31a userfaultfd: provide pid in userfault msg - add feat union
No ABI change, but this will make it more explicit to software that ptid
is only available if requested by passing UFFD_FEATURE_THREAD_ID to
UFFDIO_API.  The fact it's a union will also self document it shouldn't
be taken for granted there's a tpid there.

Link: http://lkml.kernel.org/r/20170802165145.22628-7-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Alexey Perevalov <a.perevalov@samsung.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Alexey Perevalov
9d4ac93482 userfaultfd: provide pid in userfault msg
It could be useful for calculating downtime during postcopy live
migration per vCPU.  Side observer or application itself will be
informed about proper task's sleep during userfaultfd processing.

Process's thread id is being provided when user requeste it by setting
UFFD_FEATURE_THREAD_ID bit into uffdio_api.features.

Link: http://lkml.kernel.org/r/20170802165145.22628-6-aarcange@redhat.com
Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Prakash Sangappa
2d6d6f5a09 mm: userfaultfd: add feature to request for a signal delivery
In some cases, userfaultfd mechanism should just deliver a SIGBUS signal
to the faulting process, instead of the page-fault event.  Dealing with
page-fault event using a monitor thread can be an overhead in these
cases.  For example applications like the database could use the
signaling mechanism for robustness purpose.

Database uses hugetlbfs for performance reason.  Files on hugetlbfs
filesystem are created and huge pages allocated using fallocate() API.
Pages are deallocated/freed using fallocate() hole punching support.
These files are mmapped and accessed by many processes as shared memory.
The database keeps track of which offsets in the hugetlbfs file have
pages allocated.

Any access to mapped address over holes in the file, which can occur due
to bugs in the application, is considered invalid and expect the process
to simply receive a SIGBUS.  However, currently when a hole in the file
is accessed via the mapped address, kernel/mm attempts to automatically
allocate a page at page fault time, resulting in implicitly filling the
hole in the file.  This may not be the desired behavior for applications
like the database that want to explicitly manage page allocations of
hugetlbfs files.

Using userfaultfd mechanism with this support to get a signal, database
application can prevent pages from being allocated implicitly when
processes access mapped address over holes in the file.

This patch adds UFFD_FEATURE_SIGBUS feature to userfaultfd mechnism to
request for a SIGBUS signal.

See following for previous discussion about the database requirement
leading to this proposal as suggested by Andrea.

http://www.spinics.net/lists/linux-mm/msg129224.html

Link: http://lkml.kernel.org/r/1501552446-748335-2-git-send-email-prakash.sangappa@oracle.com
Signed-off-by: Prakash Sangappa <prakash.sangappa@oracle.com>
Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Mike Kravetz
4da243ac1c mm: shm: use new hugetlb size encoding definitions
Use the common definitions from hugetlb_encode.h header file for
encoding hugetlb size definitions in shmget system call flags.

In addition, move these definitions from the internal (kernel) to user
(uapi) header file.

Link: http://lkml.kernel.org/r/1501527386-10736-4-git-send-email-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:28 -07:00
Mike Kravetz
aafd4562df mm: arch: consolidate mmap hugetlb size encodings
A non-default huge page size can be encoded in the flags argument of the
mmap system call.  The definitions for these encodings are in arch
specific header files.  However, all architectures use the same values.

Consolidate all the definitions in the primary user header file
(uapi/linux/mman.h).  Include definitions for all known huge page sizes.
Use the generic encoding definitions in hugetlb_encode.h as the basis
for these definitions.

Link: http://lkml.kernel.org/r/1501527386-10736-3-git-send-email-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:28 -07:00
Mike Kravetz
e652f69459 mm: hugetlb: define system call hugetlb size encodings in single file
Patch series "Consolidate system call hugetlb page size encodings".

These patches are the result of discussions in
https://lkml.org/lkml/2017/3/8/548.  The following changes are made in the
patch set:

1) Put all the log2 encoded huge page size definitions in a common
   header file.  The idea is have a set of definitions that can be use as
   the basis for system call specific definitions such as MAP_HUGE_* and
   SHM_HUGE_*.

2) Remove MAP_HUGE_* definitions in arch specific files.  All these
   definitions are the same.  Consolidate all definitions in the primary
   user header file (uapi/linux/mman.h).

3) Remove SHM_HUGE_* definitions intended for user space from kernel
   header file, and add to user (uapi/linux/shm.h) header file.  Add
   definitions for all known huge page size encodings as in mmap.

This patch (of 3):

If hugetlb pages are requested in mmap or shmget system calls, a huge
page size other than default can be requested.  This is accomplished by
encoding the log2 of the huge page size in the upper bits of the flag
argument.  asm-generic and arch specific headers all define the same
values for these encodings.

Put common definitions in a single header file.  The primary uapi header
files for mmap and shm will use these definitions as a basis for
definitions specific to those system calls.

Link: http://lkml.kernel.org/r/1501527386-10736-2-git-send-email-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:28 -07:00
Linus Torvalds
aae3dbb477 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) Support ipv6 checksum offload in sunvnet driver, from Shannon
    Nelson.

 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
    Dumazet.

 3) Allow generic XDP to work on virtual devices, from John Fastabend.

 4) Add bpf device maps and XDP_REDIRECT, which can be used to build
    arbitrary switching frameworks using XDP. From John Fastabend.

 5) Remove UFO offloads from the tree, gave us little other than bugs.

 6) Remove the IPSEC flow cache, from Florian Westphal.

 7) Support ipv6 route offload in mlxsw driver.

 8) Support VF representors in bnxt_en, from Sathya Perla.

 9) Add support for forward error correction modes to ethtool, from
    Vidya Sagar Ravipati.

10) Add time filter for packet scheduler action dumping, from Jamal Hadi
    Salim.

11) Extend the zerocopy sendmsg() used by virtio and tap to regular
    sockets via MSG_ZEROCOPY. From Willem de Bruijn.

12) Significantly rework value tracking in the BPF verifier, from Edward
    Cree.

13) Add new jump instructions to eBPF, from Daniel Borkmann.

14) Rework rtnetlink plumbing so that operations can be run without
    taking the RTNL semaphore. From Florian Westphal.

15) Support XDP in tap driver, from Jason Wang.

16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.

17) Add Huawei hinic ethernet driver.

18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
    Delalande.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
  i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
  i40e: avoid NVM acquire deadlock during NVM update
  drivers: net: xgene: Remove return statement from void function
  drivers: net: xgene: Configure tx/rx delay for ACPI
  drivers: net: xgene: Read tx/rx delay for ACPI
  rocker: fix kcalloc parameter order
  rds: Fix non-atomic operation on shared flag variable
  net: sched: don't use GFP_KERNEL under spin lock
  vhost_net: correctly check tx avail during rx busy polling
  net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
  rxrpc: Make service connection lookup always check for retry
  net: stmmac: Delete dead code for MDIO registration
  gianfar: Fix Tx flow control deactivation
  cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
  cxgb4: Fix pause frame count in t4_get_port_stats
  cxgb4: fix memory leak
  tun: rename generic_xdp to skb_xdp
  tun: reserve extra headroom only when XDP is set
  net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
  net: dsa: bcm_sf2: Advertise number of egress queues
  ...
2017-09-06 14:45:08 -07:00
Linus Torvalds
c7f396f12f dlm for 4.14
This set includes a bunch of minor code cleanups that
 have accumulated, probably from code analyzers people
 like to run.  There is one nice fix that avoids some
 socket leaks by switching to use sock_create_lite().
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Merge tag 'dlm-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set includes a bunch of minor code cleanups that have
  accumulated, probably from code analyzers people like to run. There is
  one nice fix that avoids some socket leaks by switching to use
  sock_create_lite()"

* tag 'dlm-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: use sock_create_lite inside tcp_accept_from_sock
  uapi linux/dlm_netlink.h: include linux/dlmconstants.h
  dlm: avoid double-free on error path in dlm_device_{register,unregister}
  dlm: constify kset_uevent_ops structure
  dlm: print log message when cluster name is not set
  dlm: Delete an unnecessary variable initialisation in dlm_ls_start()
  dlm: Improve a size determination in two functions
  dlm: Use kcalloc() in two functions
  dlm: Use kmalloc_array() in make_member_array()
  dlm: Delete an error message for a failed memory allocation in dlm_recover_waiters_pre()
  dlm: Improve a size determination in dlm_recover_waiters_pre()
  dlm: Use kcalloc() in dlm_scan_waiters()
  dlm: Improve a size determination in table_seq_start()
  dlm: Add spaces for better code readability
  dlm: Replace six seq_puts() calls by seq_putc()
  dlm: Make dismatch error message more clear
  dlm: Fix kernel memory disclosure
2017-09-06 13:39:23 -07:00
Linus Torvalds
5791577963 Updates for 4.14:
- Write unmount record for a ro mount to avoid unnecessary log replay
 - Clean up orphaned inodes when mounting fs readonly
 - Resubmit inode log items when buffer writeback fails to avoid umount hang
 - Fix log recovery corruption problems when log headers wrap around the end
 - Avoid infinite loop searching for free inodes when inode counters are wrong
 - Evict inodes involved with log redo so that we don't leak them later
 - Fix a potential race between reclaim and inode cluster freeing
 - Refactor the inode joining code w.r.t. transaction rolling & deferred ops
 - Fix a bug where the log doesn't properly deal with dirty buffers that
   are about to become ordered buffers
 - Fix the extent swap code to deal with making dirty buffers ordered properly
 - Consolidate page fault handlers
 - Refactor the incore extent manipulation functions to use the iext
   abstractions instead of directly modifying with extent data
 - Disable crashy chattr +/-x until we fix it
 - Don't allow us to set S_DAX for v2 inodes
 - Various cleanups
 - Clarify some documentation
 - Fix a problem where fsync and a log commit race to send the disk a
   flush command, resulting in a small window where power fail data loss
   could occur
 - Simplify some rmap operations in the fcollapse code
 - Fix some use-after-free problems in async writeback
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Merge tag 'xfs-4.14-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS updates from Darrick Wong:
 "Here are the changes for xfs for 4.14. Most of these are cleanups and
  fixes for bad behavior, as we're mostly focusing on improving
  reliablity this cycle (read: there's potentially a lot of stuff on the
  horizon for 4.15 so better to spend a few weeks killing other bugs
  now).

  Summary:

   - Write unmount record for a ro mount to avoid unnecessary log replay

   - Clean up orphaned inodes when mounting fs readonly

   - Resubmit inode log items when buffer writeback fails to avoid
     umount hang

   - Fix log recovery corruption problems when log headers wrap around
     the end

   - Avoid infinite loop searching for free inodes when inode counters
     are wrong

   - Evict inodes involved with log redo so that we don't leak them
     later

   - Fix a potential race between reclaim and inode cluster freeing

   - Refactor the inode joining code w.r.t. transaction rolling &
     deferred ops

   - Fix a bug where the log doesn't properly deal with dirty buffers
     that are about to become ordered buffers

   - Fix the extent swap code to deal with making dirty buffers ordered
     properly

   - Consolidate page fault handlers

   - Refactor the incore extent manipulation functions to use the iext
     abstractions instead of directly modifying with extent data

   - Disable crashy chattr +/-x until we fix it

   - Don't allow us to set S_DAX for v2 inodes

   - Various cleanups

   - Clarify some documentation

   - Fix a problem where fsync and a log commit race to send the disk a
     flush command, resulting in a small window where power fail data
     loss could occur

   - Simplify some rmap operations in the fcollapse code

   - Fix some use-after-free problems in async writeback"

* tag 'xfs-4.14-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (44 commits)
  xfs: use kmem_free to free return value of kmem_zalloc
  xfs: open code end_buffer_async_write in xfs_finish_page_writeback
  xfs: don't set v3 xflags for v2 inodes
  xfs: fix compiler warnings
  fsmap: fix documentation of FMR_OF_LAST
  xfs: simplify the rmap code in xfs_bmse_merge
  xfs: remove unused flags arg from xfs_file_iomap_begin_delay
  xfs: fix incorrect log_flushed on fsync
  xfs: disable per-inode DAX flag
  xfs: replace xfs_qm_get_rtblks with a direct call to xfs_bmap_count_leaves
  xfs: rewrite xfs_bmap_count_leaves using xfs_iext_get_extent
  xfs: use xfs_iext_*_extent helpers in xfs_bmap_split_extent_at
  xfs: use xfs_iext_*_extent helpers in xfs_bmap_shift_extents
  xfs: move some code around inside xfs_bmap_shift_extents
  xfs: use xfs_iext_get_extent in xfs_bmap_first_unused
  xfs: switch xfs_bmap_local_to_extents to use xfs_iext_insert
  xfs: add a xfs_iext_update_extent helper
  xfs: consolidate the various page fault handlers
  iomap: return VM_FAULT_* codes from iomap_page_mkwrite
  xfs: relog dirty buffers during swapext bmbt owner change
  ...
2017-09-06 12:19:23 -07:00
Linus Torvalds
bafb0762cb Char/Misc drivers for 4.14-rc1
Here is the big char/misc driver update for 4.14-rc1.
 
 Lots of different stuff in here, it's been an active development cycle
 for some reason.  Highlights are:
   - updated binder driver, this brings binder up to date with what
     shipped in the Android O release, plus some more changes that
     happened since then that are in the Android development trees.
   - coresight updates and fixes
   - mux driver file renames to be a bit "nicer"
   - intel_th driver updates
   - normal set of hyper-v updates and changes
   - small fpga subsystem and driver updates
   - lots of const code changes all over the driver trees
   - extcon driver updates
   - fmc driver subsystem upadates
   - w1 subsystem minor reworks and new features and drivers added
   - spmi driver updates
 
 Plus a smattering of other minor driver updates and fixes.
 
 All of these have been in linux-next with no reported issues for a
 while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver update for 4.14-rc1.

  Lots of different stuff in here, it's been an active development cycle
  for some reason. Highlights are:

   - updated binder driver, this brings binder up to date with what
     shipped in the Android O release, plus some more changes that
     happened since then that are in the Android development trees.

   - coresight updates and fixes

   - mux driver file renames to be a bit "nicer"

   - intel_th driver updates

   - normal set of hyper-v updates and changes

   - small fpga subsystem and driver updates

   - lots of const code changes all over the driver trees

   - extcon driver updates

   - fmc driver subsystem upadates

   - w1 subsystem minor reworks and new features and drivers added

   - spmi driver updates

  Plus a smattering of other minor driver updates and fixes.

  All of these have been in linux-next with no reported issues for a
  while"

* tag 'char-misc-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (244 commits)
  ANDROID: binder: don't queue async transactions to thread.
  ANDROID: binder: don't enqueue death notifications to thread todo.
  ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
  ANDROID: binder: Add BINDER_GET_NODE_DEBUG_INFO ioctl
  ANDROID: binder: push new transactions to waiting threads.
  ANDROID: binder: remove proc waitqueue
  android: binder: Add page usage in binder stats
  android: binder: fixup crash introduced by moving buffer hdr
  drivers: w1: add hwmon temp support for w1_therm
  drivers: w1: refactor w1_slave_show to make the temp reading functionality separate
  drivers: w1: add hwmon support structures
  eeprom: idt_89hpesx: Support both ACPI and OF probing
  mcb: Fix an error handling path in 'chameleon_parse_cells()'
  MCB: add support for SC31 to mcb-lpc
  mux: make device_type const
  char: virtio: constify attribute_group structures.
  Documentation/ABI: document the nvmem sysfs files
  lkdtm: fix spelling mistake: "incremeted" -> "incremented"
  perf: cs-etm: Fix ETMv4 CONFIGR entry in perf.data file
  nvmem: include linux/err.h from header
  ...
2017-09-05 11:08:17 -07:00
Linus Torvalds
e63a94f12b TTY/Serial updates for 4.14-rc1
Here is the big tty/serial driver update for 4.14-rc1.
 
 Well, not all that big, just a number of small serial driver fixes, and
 a new serial driver.  Also in here are some much needed goldfish tty
 driver (emulator) fixes to try to get that codebase under control.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here is the big tty/serial driver update for 4.14-rc1.

  Well, not all that big, just a number of small serial driver fixes,
  and a new serial driver. Also in here are some much needed goldfish
  tty driver (emulator) fixes to try to get that codebase under control.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (94 commits)
  tty: goldfish: Implement support for kernel 'earlycon' parameter
  tty: goldfish: Use streaming DMA for r/w operations on Ranchu platforms
  tty: goldfish: Refactor constants to better reflect their nature
  serial: 8250_port: Remove useless NULL checks
  earlycon: initialise baud field of earlycon device structure
  tty: hvcs: make ktermios const
  pty: show associative slave of ptmx in fdinfo
  tty: n_gsm: Add compat_ioctl
  tty: hvcs: constify vio_device_id
  tty: hvc_vio: constify vio_device_id
  tty: mips_ejtag_fdc: constify mips_cdmm_device_id
  Introduce 8250_men_mcb
  mcb: introduce mcb_get_resource()
  serial: imx: Avoid post-PIO cleanup if TX DMA is started
  tty: serial: imx: disable irq after suspend
  serial: 8250_uniphier: add suspend/resume support
  serial: 8250_uniphier: use CHAR register for canary to detect power-off
  serial: 8250_uniphier: fix serial port index in private data
  serial: 8250: of: Add new port type for MediaTek BTIF controller on MT7622/23 SoC
  dt-bindings: serial: 8250: Add MediaTek BTIF controller bindings
  ...
2017-09-05 10:30:48 -07:00
Linus Torvalds
1a3b85ea36 USB/PHY driver updates for 4.14-rc1
Here is the large USB and PHY driver update for 4.14-rc1.
 
 Not all that exciting, a few new PHY drivers, the usual mess of gadget
 driver updates and fixes, and of course, xhci updates to try to tame
 that beast.
 
 A number of usb-serial updates and other small fixes all over the USB
 driver tree are in here as well.  Full details are in the shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY driver updates from Greg KH:
 "Here is the large USB and PHY driver update for 4.14-rc1.

  Not all that exciting, a few new PHY drivers, the usual mess of gadget
  driver updates and fixes, and of course, xhci updates to try to tame
  that beast.

  A number of usb-serial updates and other small fixes all over the USB
  driver tree are in here as well. Full details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (171 commits)
  usbip: vhci-hcd: make vhci_hc_driver const
  usb: phy: Avoid unchecked dereference warning
  usb: imx21-hcd: make imx21_hc_driver const
  usb: host: make ehci_fsl_overrides const and __initconst
  dt-bindings: mt8173-mtu3: add generic compatible and rename file
  dt-bindings: mt8173-xhci: add generic compatible and rename file
  usb: xhci-mtk: add generic compatible string
  usbip: auto retry for concurrent attach
  USB: serial: option: simplify 3 D-Link device entries
  USB: serial: option: add support for D-Link DWM-157 C1
  usb: core: usbport: fix "BUG: key not in .data" when lockdep is enabled
  usb: chipidea: usb2: check memory allocation failure
  usb: Add device quirk for Logitech HD Pro Webcam C920-C
  usb: misc: lvstest: add entry to place port in compliance mode
  usb: xhci: Support enabling of compliance mode for xhci 1.1
  usb:xhci:Fix regression when ATI chipsets detected
  usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard
  usb: gadget: make snd_pcm_hardware const
  usb: common: use of_property_read_bool()
  USB: core: constify vm_operations_struct
  ...
2017-09-05 10:26:01 -07:00
Mauro Carvalho Chehab
e4faa09b0d media: dvb headers: make checkpatch happier
Adjust dvb ca.h, dmx.h and frontend.h in order to make
checkpatch happier. Now, it only complains about the typedefs,
and those are there just to provide backward userspace
compatibility.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 07:10:24 -04:00
Mauro Carvalho Chehab
7e6854a9bf media: ca.h: document ca_msg and the corresponding ioctls
Usually, CA messages are sent/received via reading/writing at
the CA device node. However, two drivers (dst_ca and firedtv-ci)
also implement it via ioctls.

Apparently, on both cases, the net result is the same.

Anyway, let's document it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:23:28 -04:00
Mauro Carvalho Chehab
bd9049edc6 media: ca docs: document CA_SET_DESCR ioctl and structs
The av7110 driver uses CA_SET_DESCR to store the descrambler
control words at the CA descrambler slots.

Document it.

Thanks-to: Honza Petrouš <jpetrous@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:23:07 -04:00
Mauro Carvalho Chehab
56d51b65bc media: net.h: add kernel-doc and use it at Documentation/
As we did with frontend.h, ca.h and dmx.h, move the struct
definition to net.h.

That should help to keep it updated, as more stuff gets
added there.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:22:42 -04:00
Mauro Carvalho Chehab
5176d6eefd media: frontend.h: Avoid the term DVB when doesn't refer to a delivery system
The DVB term can either refer to the subsystem or to a delivery
system. Avoid it in the first case at the kernel-doc markups.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:22:13 -04:00
Mauro Carvalho Chehab
fed7c4fe8b media: ca.h: document most CA data types
For most of the stuff there, documenting is easy, as the
header file contains information.

Yet, I was unable to document two data structs:
	ca_msg and ca_descr

As those two structs are used by a few drivers, keep them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:10:33 -04:00
Mauro Carvalho Chehab
833ff5e7fe media: ca.h: get rid of CA_SET_PID
This ioctl seems to be some attempt to support a feature
at the bt8xx dst_ca driver. Yet, as said there, it
"needs more work". Right now, the code there is just
a boilerplate.

At the end of the day, no driver uses this ioctl, nor it is
documented anywhere (except for "needs more work").

So, get rid of it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:06:56 -04:00
Mauro Carvalho Chehab
bb98e6d280 media: dmx.h: add kernel-doc markups and use it at Documentation/
The demux documentation is pretty poor nowadays: most of the
structs and enums aren't documented at all.

Add proper kernel-doc markups for them and use it.

Now, the demux API data structures are fully documented :-)

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-09-05 06:05:40 -04:00