openwrt/staging/blogic.git
7 years agoperf c2c: Clarify help message of --stats option
Namhyung Kim [Tue, 7 Mar 2017 15:08:32 +0000 (00:08 +0900)]
perf c2c: Clarify help message of --stats option

As it is not strictly asking for only stdio output, but will imply using
it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170307150851.22304-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf report: Hide tip message when -q option is given
Namhyung Kim [Tue, 7 Mar 2017 15:08:29 +0000 (00:08 +0900)]
perf report: Hide tip message when -q option is given

The tip message at the end was printed regardless of the -q option.

Originally, the message suggested only '-s comm,dso' option for higher
level view when no sort option and parent option were given.

Now it shows random help message regardless of the options so the
condition can be simplified to honor the -q option.

Committer notes:

Before:

  $ perf report --stdio -q
    42.77%  ls       ls                [.] _init
    13.21%  ls       ld-2.24.so        [.] match_symbol
    12.55%  ls       libc-2.24.so      [.] __strcoll_l
    11.94%  ls       libc-2.24.so      [.] _init

  #
  # (Tip: Show current config key-value pairs: perf config --list)
  #
  $

After:

  $ perf report --stdio -q
    42.77%  ls       ls                [.] _init
    13.21%  ls       ld-2.24.so        [.] match_symbol
    12.55%  ls       libc-2.24.so      [.] __strcoll_l
    11.94%  ls       libc-2.24.so      [.] _init

  $

We still have those two extra lines tho (that git commit insists in
turning into one, or git commit --amend doesn't make me add), food for
another patch...

Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170307150851.22304-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoMerge tag 'perf-core-for-mingo-4.11-20170306' of git://git.kernel.org/pub/scm/linux...
Ingo Molnar [Tue, 7 Mar 2017 07:14:14 +0000 (08:14 +0100)]
Merge tag 'perf-core-for-mingo-4.11-20170306' of git://git./linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

New features:

- Allow sorting by symbol_size in 'perf report' and 'perf top' (Charles Baylis)

  E.g.:

  # perf report -s symbol_size,symbol

  Samples: 9K of event 'cycles:k', Event count (approx.): 2870461623
  Overhead  Symbol size  Symbol
    14.55%          326  [k] flush_tlb_mm_range
     7.20%         1045  [k] filemap_map_pages
     5.82%          124  [k] vma_interval_tree_insert
     5.18%         2430  [k] unmap_page_range
     2.57%          571  [k] vma_interval_tree_remove
     1.94%          494  [k] page_add_file_rmap
     1.82%          740  [k] page_remove_rmap
     1.66%         1017  [k] release_pages
     1.57%         1636  [k] update_blocked_averages
     1.57%           76  [k] unlock_page

- Add support for -p/--pid, -a/--all-cpus and -C/--cpu in 'perf ftrace' (Namhyung Kim)

Change in behaviour:

- Make system wide (-a) the default option if no target was specified and one
  of following conditions is met:

  - No workload specified (current behaviour)

  - A workload is specified but all requested events are system wide ones,
    like uncore ones. (Jiri Olsa)

Fixes:

- Add missing initialization to the instruction decoder used in the
  intel PT/BTS code, which was causing lots of failures in 'perf test',
  looking for a value when there was none (Adrian Hunter)

Infrastructure changes:

- Add arch code needed to adopt the kernel's refcount_t to aid in
  catching bugs when using atomic_t as a reference counter, basically
  cmpxchg related functions (Arnaldo Carvalho de Melo)

- Convert the code using atomic_t as reference counts to refcount_t
  (Elena Rashetova)

- Add feature test for sched_getcpu() to more easily check for its
  presence in the many libc implementations and accross different
  versions of such C libraries (Arnaldo Carvalho de Melo)

- Issue a HW watchdog disable hint in 'perf stat' for when some of the
  requested events can't get counted because a PMU counter is taken by that
  watchdog (Borislav Petkov).

- Add mapping for Intel's KnightsMill PMU events (Karol Wachowski)

Documentation changes:

- Clarify the term 'convergence' in:

   perf bench numa numa-mem -h --show_convergence (Jiri Olsa)

Kernel code changes:

- Ensure probe location is at function entry in kretprobes (Naveen N. Rao)

- Allow return probes with offsets and absolute addresses (Naveen N. Rao)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoperf bench numa: Add more comment for -c option
Jiri Olsa [Sun, 5 Mar 2017 16:40:11 +0000 (17:40 +0100)]
perf bench numa: Add more comment for -c option

Adding more commentary for -c/--show_convergence option, to explain how
the convergence is defined.

Before:
    -c, --show_convergence
                          show convergence details

Now:
    -c, --show_convergence
                          convergence is reached when each process \
(all its threads) is running on a single NUMA node.

Suggested--by: Jiri Hladky <jhladky@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Hladky <jhladky@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1488732011-27384-1-git-send-email-jolsa@kernel.org
[ Rephrased a bit based on a IRC conversation with Jiri ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoLinux 4.11-rc1
Linus Torvalds [Sun, 5 Mar 2017 20:59:56 +0000 (12:59 -0800)]
Linux 4.11-rc1

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 5 Mar 2017 01:31:39 +0000 (17:31 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix double-free in batman-adv, from Sven Eckelmann.

 2) Fix packet stats for fast-RX path, from Joannes Berg.

 3) Netfilter's ip_route_me_harder() doesn't handle request sockets
    properly, fix from Florian Westphal.

 4) Fix sendmsg deadlock in rxrpc, from David Howells.

 5) Add missing RCU locking to transport hashtable scan, from Xin Long.

 6) Fix potential packet loss in mlxsw driver, from Ido Schimmel.

 7) Fix race in NAPI handling between poll handlers and busy polling,
    from Eric Dumazet.

 8) TX path in vxlan and geneve need proper RCU locking, from Jakub
    Kicinski.

 9) SYN processing in DCCP and TCP need to disable BH, from Eric
    Dumazet.

10) Properly handle net_enable_timestamp() being invoked from IRQ
    context, also from Eric Dumazet.

11) Fix crash on device-tree systems in xgene driver, from Alban Bedel.

12) Do not call sk_free() on a locked socket, from Arnaldo Carvalho de
    Melo.

13) Fix use-after-free in netvsc driver, from Dexuan Cui.

14) Fix max MTU setting in bonding driver, from WANG Cong.

15) xen-netback hash table can be allocated from softirq context, so use
    GFP_ATOMIC. From Anoob Soman.

16) Fix MAC address change bug in bgmac driver, from Hari Vyas.

17) strparser needs to destroy strp_wq on module exit, from WANG Cong.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (69 commits)
  strparser: destroy workqueue on module exit
  sfc: fix IPID endianness in TSOv2
  sfc: avoid max() in array size
  rds: remove unnecessary returned value check
  rxrpc: Fix potential NULL-pointer exception
  nfp: correct DMA direction in XDP DMA sync
  nfp: don't tell FW about the reserved buffer space
  net: ethernet: bgmac: mac address change bug
  net: ethernet: bgmac: init sequence bug
  xen-netback: don't vfree() queues under spinlock
  xen-netback: keep a local pointer for vif in backend_disconnect()
  netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails
  netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups
  netfilter: nf_conntrack_sip: fix wrong memory initialisation
  can: flexcan: fix typo in comment
  can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
  can: gs_usb: fix coding style
  can: gs_usb: Don't use stack memory for USB transfers
  ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines
  ixgbe: update the rss key on h/w, when ethtool ask for it
  ...

7 years agoMerge tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 4 Mar 2017 19:36:19 +0000 (11:36 -0800)]
Merge tag 'kvm-4.11-2' of git://git./virt/kvm/kvm

Pull more KVM updates from Radim Krčmář:
 "Second batch of KVM changes for the 4.11 merge window:

  PPC:
   - correct assumption about ASDR on POWER9
   - fix MMIO emulation on POWER9

  x86:
   - add a simple test for ioperm
   - cleanup TSS (going through KVM tree as the whole undertaking was
     caused by VMX's use of TSS)
   - fix nVMX interrupt delivery
   - fix some performance counters in the guest

  ... and two cleanup patches"

* tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: Fix pending events injection
  x86/kvm/vmx: remove unused variable in segment_base()
  selftests/x86: Add a basic selftest for ioperm
  x86/asm: Tidy up TSS limit code
  kvm: convert kvm.users_count from atomic_t to refcount_t
  KVM: x86: never specify a sample period for virtualized in_tx_cp counters
  KVM: PPC: Book3S HV: Don't use ASDR for real-mode HPT faults on POWER9
  KVM: PPC: Book3S HV: Fix software walk of guest process page tables

7 years agoMerge tag 'docs-4.11-fixes' of git://git.lwn.net/linux
Linus Torvalds [Sat, 4 Mar 2017 19:32:18 +0000 (11:32 -0800)]
Merge tag 'docs-4.11-fixes' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A few fixes for the docs tree, including one for a 4.11 build
  regression"

* tag 'docs-4.11-fixes' of git://git.lwn.net/linux:
  Documentation/sphinx: fix primary_domain configuration
  docs: Fix htmldocs build failure
  doc/ko_KR/memory-barriers: Update control-dependencies section
  pcieaer doc: update the link
  Documentation: Update path to sysrq.txt

7 years agoMerge tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 4 Mar 2017 19:26:18 +0000 (11:26 -0800)]
Merge tag 'staging-4.11-rc1-part2' of git://git./linux/kernel/git/gregkh/staging

Pull staging/IIO driver fixes from Greg KH:
 "Here are a few small staging and IIO driver fixes for issues that
  showed up after the big set if changes you merged last week.

  Nothing major, just small bugs resolved in some IIO drivers, a lustre
  allocation fix, and some RaspberryPi driver fixes for reported
  problems, as well as a MAINTAINERS entry update.

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

* tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: fsl-mc: fix warning in DT ranges parser
  MAINTAINERS: Remove Noralf Trønnes as fbtft maintainer
  staging: vchiq_2835_arm: Make cache-line-size a required DT property
  staging: bcm2835/mmal-vchiq: unlock on error in buffer_from_host()
  staging/lustre/lnet: Fix allocation size for sv_cpt_data
  iio: adc: xilinx: Fix error handling
  iio: 104-quad-8: Fix off-by-one error when addressing flag register
  iio: adc: handle unknow of_device_id data

7 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sat, 4 Mar 2017 18:42:53 +0000 (10:42 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - vmalloc stack regression in CCM

 - Build problem in CRC32 on ARM

 - Memory leak in cavium

 - Missing Kconfig dependencies in atmel and mediatek

 - XTS Regression on some platforms (s390 and ppc)

 - Memory overrun in CCM test vector

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: vmx - Use skcipher for xts fallback
  crypto: vmx - Use skcipher for cbc fallback
  crypto: testmgr - Pad aes_ccm_enc_tv_template vector
  crypto: arm/crc32 - add build time test for CRC instruction support
  crypto: arm/crc32 - fix build error with outdated binutils
  crypto: ccm - move cbcmac input off the stack
  crypto: xts - Propagate NEED_FALLBACK bit
  crypto: api - Add crypto_requires_off helper
  crypto: atmel - CRYPTO_DEV_MEDIATEK should depend on HAS_DMA
  crypto: atmel - CRYPTO_DEV_ATMEL_TDES and CRYPTO_DEV_ATMEL_SHA should depend on HAS_DMA
  crypto: cavium - fix leak on curr if curr->head fails to be allocated
  crypto: cavium - Fix couple of static checker errors

7 years agoMerge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 4 Mar 2017 05:44:35 +0000 (21:44 -0800)]
Merge branch 'work.misc' of git://git./linux/kernel/git/viro/vfs

Pull misc final vfs updates from Al Viro:
 "A few unrelated patches that got beating in -next.

  Everything else will have to go into the next window ;-/"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  hfs: fix hfs_readdir()
  selftest for default_file_splice_read() infoleak
  9p: constify ->d_name handling

7 years agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 4 Mar 2017 05:36:56 +0000 (21:36 -0800)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "This is the set of stuff that didn't quite make the initial pull and a
  set of fixes for stuff which did.

  The new stuff is basically lpfc (nvme), qedi and aacraid. The fixes
  cover a lot of previously submitted stuff, the most important of which
  probably covers some of the failing irq vectors allocation and other
  fallout from having the SCSI command allocated as part of the block
  allocation functions"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (59 commits)
  scsi: qedi: Fix memory leak in tmf response processing.
  scsi: aacraid: remove redundant zero check on ret
  scsi: lpfc: use proper format string for dma_addr_t
  scsi: lpfc: use div_u64 for 64-bit division
  scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m
  scsi: cciss: correct check map error.
  scsi: qla2xxx: fix spelling mistake: "seperator" -> "separator"
  scsi: aacraid: Fixed expander hotplug for SMART family
  scsi: mpt3sas: switch to pci_alloc_irq_vectors
  scsi: qedf: fixup compilation warning about atomic_t usage
  scsi: remove scsi_execute_req_flags
  scsi: merge __scsi_execute into scsi_execute
  scsi: simplify scsi_execute_req_flags
  scsi: make the sense header argument to scsi_test_unit_ready mandatory
  scsi: sd: improve TUR handling in sd_check_events
  scsi: always zero sshdr in scsi_normalize_sense
  scsi: scsi_dh_emc: return success in clariion_std_inquiry()
  scsi: fix memory leak of sdpk on when gd fails to allocate
  scsi: sd: make sd_devt_release() static
  scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.
  ...

7 years agostrparser: destroy workqueue on module exit
WANG Cong [Fri, 3 Mar 2017 20:21:14 +0000 (12:21 -0800)]
strparser: destroy workqueue on module exit

Fixes: 43a0c6751a32 ("strparser: Stream parser for messages")
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Sat, 4 Mar 2017 04:40:06 +0000 (20:40 -0800)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are:

1) Missing check for full sock in ip_route_me_harder(), from
   Florian Westphal.

2) Incorrect sip helper structure initilization that breaks it when
   several ports are used, from Christophe Leroy.

3) Fix incorrect assumption when looking up for matching with adjacent
   intervals in the nft_set_rbtree.

4) Fix broken netlink event error reporting in nf_tables that results
   in misleading ESRCH errors propagated to userspace listeners.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sat, 4 Mar 2017 00:48:48 +0000 (16:48 -0800)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "A fix and regression test case for nvdimm namespace label
  compatibility.

  Details:

   - An "nvdimm namespace label" is metadata on an nvdimm that
     provisions dimm capacity into a "namespace" that can host a block
     device / dax-filesytem, or a device-dax character device.

     A namespace is an object that other operating environment and
     platform firmware needs to comprehend for capabilities like booting
     from an nvdimm.

     The label metadata contains a checksum that Linux was not
     calculating correctly leading to other environments rejecting the
     Linux label.

   These have received a build success notification from the kbuild
   robot, and a positive test result from Nick who reported the problem"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nfit, libnvdimm: fix interleave set cookie calculation
  tools/testing/nvdimm: make iset cookie predictable

7 years agoMerge tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Sat, 4 Mar 2017 00:44:21 +0000 (16:44 -0800)]
Merge tag 'pci-v4.11-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - fix NULL pointer dereferences in many DesignWare-based drivers due to
   refactoring error

 - fix Altera config write breakage due to my refactoring error

* tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: altera: Fix TLP_CFG_DW0 for TLP write
  PCI: dwc: Fix crashes seen due to missing assignments

7 years agoMerge branch 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Sat, 4 Mar 2017 00:20:06 +0000 (16:20 -0800)]
Merge branch 'parisc-4.11-1' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes and cleanups from Helge Deller:
 "Nothing really important in this patchset: fix resource leaks in error
  paths, coding style cleanups and code removal"

* 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Remove flush_user_dcache_range and flush_user_icache_range
  parisc: fix a printk
  parisc: ccio-dma: Handle return NULL error from ioremap_nocache
  parisc: Define access_ok() as macro
  parisc: eisa: Fix resource leaks in error paths
  parisc: eisa: Remove coding style errors

7 years agoMerge tag 'xtensa-20170303' of git://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Sat, 4 Mar 2017 00:17:55 +0000 (16:17 -0800)]
Merge tag 'xtensa-20170303' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - clean up bootable image build targets: provide separate 'Image',
   'zImage' and 'uImage' make targets that only build corresponding
   image type. Make 'all' build all images appropriate for a platform

 - allow merging vectors code into .text section as a preparation step
   for XIP support

 - fix handling external FDT when the kernel is built without
   BLK_DEV_INITRD support

* tag 'xtensa-20170303' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: allow merging vectors into .text section
  xtensa: clean up bootable image build targets
  xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD

7 years agoMerge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sat, 4 Mar 2017 00:15:48 +0000 (16:15 -0800)]
Merge tag 'armsoc-late' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC late DT updates from Arnd Bergmann:
 "These updates have been kept in a separate branch mostly because they
  rely on updates to the respective clk drivers to keep the shared
  header files in sync.

  This includes two branches for arm64 dt updates, both following up on
  earlier changes for the same platforms that are already merged:

  Samsung:
   - add USB3 support in Exynos7
   - minor PM related updates

  Amlogic:
   - new machines: WeTek Set-top-boxes
   - various devices added to DT

  There are also a couple of bugfixes that trickled in since the start
  of the merge window:

   - The moxart_defconfig was not building the intended platform
   - CPU-hotplug was broken on ux500
   - Coresight was broken on Juno (never worked)"

* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (26 commits)
  ARM: deconfig: fix the moxart defconfig
  ARM: ux500: resume the second core properly
  arm64: dts: juno: update definition for programmable replicator
  arm64: dts: exynos: Add regulators for Vbus and Vbus-Boost
  arm64: dts: exynos: Add USB 3.0 controller node for Exynos7
  arm64: dts: exynos: Use macros for pinctrl configuration on Exynos7
  pinctrl: dt-bindings: samsung: Add Exynos7 specific pinctrl macro definitions
  arm64: dts: exynos: Add initial configuration for DISP clocks for TM2/TM2e
  ARM64: dts: meson-gxbb-p200: add ADC laddered keys
  ARM64: dts: meson: meson-gx: add the SAR ADC
  ARM64: dts: meson-gxl: add the pwm_ao_b pin
  ARM64: dts: meson-gx: add the missing pwm_AO_ab node
  clk: gxbb: fix CLKID_ETH defined twice
  ARM64: dts: meson-gxl: rename Nexbox A95x for consistency
  clk: gxbb: add the SAR ADC clocks and expose them
  dt-bindings: amlogic: Add WeTek boards
  ARM64: dts: meson-gxbb: Add support for WeTek Hub and Play
  dt-bindings: vendor-prefix: Add wetek vendor prefix
  ARM64: dts: meson-gxm: Rename q200 and q201 DT files for consistency
  ARM64: dts: meson-gx: Add HDMI HPD/DDC pinctrl nodes
  ...

7 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 4 Mar 2017 00:00:59 +0000 (16:00 -0800)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull SMB3 fixes from Steve French:
 "Some small bug fixes as well as SMB2.1/SMB3 enablement for DFS (global
  namespace) which previously was only enabled for CIFS"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  smb2: Enforce sec= mount option
  CIFS: Fix sparse warnings
  CIFS: implement get_dfs_refer for SMB2+
  CIFS: use DFS pathnames in SMB2+ Create requests
  CIFS: set signing flag in SMB2+ TreeConnect if needed
  CIFS: let ses->ipc_tid hold smb2 TreeIds
  CIFS: add use_ipc flag to SMB2_ioctl()
  CIFS: add build_path_from_dentry_optional_prefix()
  CIFS: move DFS response parsing out of SMB1 code
  CIFS: Fix possible use after free in demultiplex thread

7 years agoDocumentation/sphinx: fix primary_domain configuration
John Keeping [Fri, 3 Mar 2017 12:24:05 +0000 (12:24 +0000)]
Documentation/sphinx: fix primary_domain configuration

With Sphinx 1.5.3 I get the warning:

WARNING: primary_domain 'C' not found, ignored.

It seems that domain names in Sphinx are case-sensitive and for the C
domain the name must be lower case.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
7 years agodocs: Fix htmldocs build failure
Martyn Welch [Fri, 3 Mar 2017 22:43:30 +0000 (22:43 +0000)]
docs: Fix htmldocs build failure

Build of HTML docs failing due to conversion of deviceiobook.tmpl in
8a8a602f and regulator.tmpl in 028f2533 to RST without removing from
DOCBOOKS in Makefile, resulting (in the case of deviceiobook) the
following error:

make[1]: *** No rule to make target 'Documentation/DocBook/deviceiobook.xml', needed by 'Documentation/DocBook/deviceiobook.aux.xml'.  Stop.
Makefile:1452: recipe for target 'htmldocs' failed
make: *** [htmldocs] Error 2

Update DOCBOOKS to reflect available books.

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
7 years agodoc/ko_KR/memory-barriers: Update control-dependencies section
SeongJae Park [Fri, 3 Mar 2017 06:44:02 +0000 (15:44 +0900)]
doc/ko_KR/memory-barriers: Update control-dependencies section

This commit applies upstream change, commit c8241f8553e8 ("doc: Update
control-dependencies section of memory-barriers.txt"), to Korean
translation.

Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
7 years agopcieaer doc: update the link
Cao jin [Wed, 1 Mar 2017 09:05:28 +0000 (17:05 +0800)]
pcieaer doc: update the link

The original link is empty, replace it.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
7 years agoDocumentation: Update path to sysrq.txt
Krzysztof Kozlowski [Fri, 24 Feb 2017 08:42:14 +0000 (10:42 +0200)]
Documentation: Update path to sysrq.txt

Commit 9d85025b0418 ("docs-rst: create an user's manual book") moved the
sysrq.txt leaving old paths in the kernel docs.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
7 years agotools build: Use the same CC for feature detection and actual build
Arnaldo Carvalho de Melo [Thu, 2 Mar 2017 19:00:26 +0000 (16:00 -0300)]
tools build: Use the same CC for feature detection and actual build

When build with: 'make CC=clang' we were not using that CC to do
feature detection, which resulted in features being detected with gcc
and then the actual tools being built with clang.

Most of the time these compilers are compatible enough, so no
problem was being noticed.

As soon as a system with an old enough clang, one that hasn't
the cpuid.h header is used, and a gcc with it, the "get_cpuid" feature
will be found available but then code that will use can't be compiled.

Noticed with this combination:

  / $ gcc --version | head -1
  gcc (Alpine 6.3.0) 6.3.0
  / $ clang --version | head -1
  clang version 3.8.1 (tags/RELEASE_381/final)
  / $ cat /etc/alpine-release
  3.5.0
  / $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-60q18nvlvgpyfv7e2qqgx4ou@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf bench futex: Fix build on musl + clang
Arnaldo Carvalho de Melo [Thu, 2 Mar 2017 18:44:19 +0000 (15:44 -0300)]
perf bench futex: Fix build on musl + clang

When building with clang on a musl libc system, Alpine Linux, we end up
hitting a problem where memset() is used but its prototype is not
present, add it to avoid this:

  bench/futex-wake.c:99:3: error: implicitly declaring library function 'memset' with type 'void *(void *, int, unsigned long)'
        [-Werror,-Wimplicit-function-declaration]
                  CPU_ZERO(&cpu);
                  ^
  /usr/include/sched.h:127:23: note: expanded from macro 'CPU_ZERO'
  #define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t),set)
                        ^
  /usr/include/sched.h:110:30: note: expanded from macro 'CPU_ZERO_S'
  #define CPU_ZERO_S(size,set) memset(set,0,size)
                               ^
  bench/futex-wake.c:99:3: note: include the header <string.h> or explicitly provide a declaration for 'memset'

Found while updating my test build containers to build perf with clang in more
systems.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-jh10vaz2r98zl6gm5iau8prr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf bench futex: Use __maybe_unused
Arnaldo Carvalho de Melo [Thu, 2 Mar 2017 18:31:43 +0000 (15:31 -0300)]
perf bench futex: Use __maybe_unused

Instead of attributing a variable to itself to silence the compiler, use
the attribute designed for that, avoiding this:

In file included from bench/futex-hash.c:24:
bench/futex.h:95:7: error: explicitly assigning value of variable of type 'pthread_attr_t *' to itself [-Werror,-Wself-assign]
        attr = attr;
        ~~~~ ^ ~~~~
bench/futex.h:96:13: error: explicitly assigning value of variable of type 'size_t' (aka 'unsigned long') to itself [-Werror,-Wself-assign]
        cpusetsize = cpusetsize;
        ~~~~~~~~~~ ^ ~~~~~~~~~~
bench/futex.h:97:9: error: explicitly assigning value of variable of type 'cpu_set_t *' (aka 'struct cpu_set_t *') to itself [-Werror,-Wself-assign]
        cpuset = cpuset;
        ~~~~~~ ^ ~~~~~~

That is only triggered when HAVE_PTHREAD_ATTR_SETAFFINITY_NP isn't set.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-14ws1d1elj2d5ej8g7cwdqau@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools build: Add test for sched_getcpu()
Arnaldo Carvalho de Melo [Thu, 2 Mar 2017 15:55:49 +0000 (12:55 -0300)]
tools build: Add test for sched_getcpu()

Instead of trying to go on adding more ifdef conditions, do a feature
test and define HAVE_SCHED_GETCPU_SUPPORT instead, then use it to
provide the prototype. No need to change the stub, as it is already a
__weak symbol.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-yge89er9g90sc0v6k0a0r5tr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf tools: Force uncore events to system wide monitoring
Jiri Olsa [Mon, 27 Feb 2017 09:48:18 +0000 (10:48 +0100)]
perf tools: Force uncore events to system wide monitoring

Make system wide (-a) the default option if no target was specified and
one of following conditions is met:

  - there's no workload specified (current behaviour)
  - there is workload specified but all requested
    events are system wide ones

Mixed events core/uncore with workload:

  $ perf stat -e 'uncore_cbox_0/clockticks/,cycles' sleep 1

   Performance counter stats for 'sleep 1':

     <not supported>      uncore_cbox_0/clockticks/
             980,489      cycles

         1.000897406 seconds time elapsed

Uncore event with workload:

  $ perf stat -e 'uncore_cbox_0/clockticks/' sleep 1

   Performance counter stats for 'system wide':

  281,473,897,192,670      uncore_cbox_0/clockticks/

         1.000833784 seconds time elapsed

Committer note:

When testing I realized the default case for !root, i.e. no events
passed via -e, was broke by v2 of this patch, reported and after a
patch provided by Jiri it is back working:

  [acme@jouet linux]$ perf stat usleep 1

   Performance counter stats for 'usleep 1':

         0.401335      task-clock:u (msec)     #   0.297 CPUs utilized
                0      context-switches:u      #   0.000 K/sec
                0      cpu-migrations:u        #   0.000 K/sec
               48      page-faults:u           #   0.120 M/sec
          458,146      cycles:u                #   1.142 GHz
          245,113      instructions:u          #   0.54  insn per cycle
           47,991      branches:u              # 119.578 M/sec
            4,022      branch-misses:u         #   8.38% of all branches

      0.001350029 seconds time elapsed

  [acme@jouet linux]$

Suggested-and-Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170227094818.GA12764@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotrace/kprobes: Add back warning about offset in return probes
Steven Rostedt (VMware) [Mon, 27 Feb 2017 16:52:04 +0000 (11:52 -0500)]
trace/kprobes: Add back warning about offset in return probes

Let's not remove the warning about offsets and return probes when the
offset is invalid.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20170227115204.00f92846@gandalf.local.home
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf intel-PT/BTS: Add missing initialization
Adrian Hunter [Tue, 28 Feb 2017 10:02:36 +0000 (12:02 +0200)]
perf intel-PT/BTS: Add missing initialization

  $ perf test decoder
  57: x86 instruction decoder - new instructions : FAILED!
  $

  Failed to decode 'rel' value (0xfffffffc vs expected 0): 0f 1b 80 78 56 34 12  bndstx %bnd0,0x12345678(%rax)
  Failed to decode 'rel' value (0xfffffffc vs expected 0): 0f 1b 85 78 56 34 12  bndstx %bnd0,0x12345678(%rbp)
  Failed to decode 'rel' value (0xfffffffc vs expected 0): 0f 1b 84 01 78 56 34 12  bndstx %bnd0,0x12345678(%rcx,%rax,1)
  Failed to decode 'rel' value (0xfffffffc vs expected 0): 0f 1b 84 05 78 56 34 12  bndstx %bnd0,0x12345678(%rbp,%rax,1)
  Failed to decode 'rel' value (0xfffffffc vs expected 0): 0f 1b 84 08 78 56 34 12  bndstx %bnd0,0x12345678(%rax,%rcx,1)

There is missing initialization.  It only affects the test because it is
checking 'rel' even in cases where there is no value.

Fix it.

Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/08c6ad07-7994-3e56-b20e-d75727ca7765@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf probe: Generalize probe event file open routine
Naveen N. Rao [Thu, 23 Feb 2017 11:37:23 +0000 (17:07 +0530)]
perf probe: Generalize probe event file open routine

Generalize probe event file open routine into a generic function for opening
trace files.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/b580465c7a4dcd5d3b40fdf8568e6be45d0a6333.1487849577.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotrace/kprobes: Allow return probes with offsets and absolute addresses
Naveen N. Rao [Wed, 22 Feb 2017 13:53:39 +0000 (19:23 +0530)]
trace/kprobes: Allow return probes with offsets and absolute addresses

Since the kernel includes many non-global functions with same names, we
will need to use offsets from other symbols (typically _text/_stext) or
absolute addresses to place return probes on specific functions. Also,
the core register_kretprobe() API never forbid use of offsets or
absolute addresses with kretprobes.

Allow its use with the trace infrastructure. To distinguish kernels that
support this, update ftrace README to explicitly call this out.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/183e7ce2921a08c9c755ee9a5da3134febc6695b.1487770934.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agokretprobes: Ensure probe location is at function entry
Naveen N. Rao [Wed, 22 Feb 2017 13:53:37 +0000 (19:23 +0530)]
kretprobes: Ensure probe location is at function entry

kretprobes can be registered by specifying an absolute address or by
specifying offset to a symbol. However, we need to ensure this falls at
function entry so as to be able to determine the return address.

Validate the same during kretprobe registration. By default, there
should not be any offset from a function entry, as determined through a
kallsyms_lookup(). Introduce arch_function_offset_within_entry() as a
way for architectures to override this.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/f1583bc4839a3862cfc2acefcc56f9c8837fa2ba.1487770934.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf ftrace: Use pager for displaying result
Namhyung Kim [Fri, 24 Feb 2017 01:12:51 +0000 (10:12 +0900)]
perf ftrace: Use pager for displaying result

It's convenient to use the pager when seeing many lines of result.

Note that setup_pager() should be called after perf_evlist__prepare_workload()
since they can interfere each other regarding shared stdio streams.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf ftrace: Add support for -a and -C option
Namhyung Kim [Fri, 24 Feb 2017 01:12:50 +0000 (10:12 +0900)]
perf ftrace: Add support for -a and -C option

The -a/--all-cpus and -C/--cpu option is for controlling tracing cpus.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf cpumap: Introduce cpu_map__snprint_mask()
Namhyung Kim [Fri, 24 Feb 2017 01:12:49 +0000 (10:12 +0900)]
perf cpumap: Introduce cpu_map__snprint_mask()

The cpu_map__snprint_mask() generates a string representation of a
cpumask bitmap.  For cpu 0 to 11, it'll return "fff".

Committer notes:

Fix compiler warning on some toolchains:

    19 fedora:24-x-ARC-uClibc: FAIL

    CC       /tmp/build/perf/util/cpumap.o
  util/cpumap.c: In function 'hex_char':
  util/cpumap.c:679:2: error: comparison is always true due to limited range of data type [-Werror=type-limits]
    if (0 <= val && val <= 9)
    ^
  cc1: all warnings being treated as errors

Applying patch from Namhyung that makes function receive an 'unsigned
char', that is what the callers are passing to this function.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf ftrace: Add support for --pid option
Namhyung Kim [Fri, 24 Feb 2017 01:12:48 +0000 (10:12 +0900)]
perf ftrace: Add support for --pid option

The -p (--pid) option enables to trace existing process by its pid.

Committer notes:

Testing it:

Using the function_graph tracer on a process that is just waiting for user
input and thus will make 'perf ftrace' sit there waiting for that, then press
any key on that mutt session and see what happens:

  # perf ftrace -t function_graph -p `pidof mutt` | head -40
  2)   1.038 us    |  switch_mm_irqs_off();
  ------------------------------------------
  2)    <idle>-0    =>   mutt-3595
  ------------------------------------------

  2)               |              finish_task_switch() {
  2)               |                smp_irq_work_interrupt() {
  2)               |                  irq_enter() {
  2)   0.180 us    |                    rcu_irq_enter();
  2)   1.248 us    |                  }
  2)               |                  __wake_up() {
  2)   0.126 us    |                    _raw_spin_lock_irqsave();
  2)               |                    __wake_up_common() {
  2)               |                      pollwake() {
  2)               |                        default_wake_function() {
  2)               |                          try_to_wake_up() {
  2)   0.662 us    |                            _raw_spin_lock_irqsave();
  2)               |                            select_task_rq_fair() {
  2)   1.719 us    |                              effective_load.isra.41();
  2)   1.343 us    |                              effective_load.isra.41();
  2)               |                              select_idle_sibling() {
  2)   0.331 us    |                                idle_cpu();
  2)   1.458 us    |                              }
  2)   8.350 us    |                            }
  2)   0.200 us    |                            _raw_spin_lock();
  2)               |                            ttwu_do_activate() {
  2)               |                              activate_task() {
  2)   0.136 us    |                                update_rq_clock.part.77();
  2)               |                                enqueue_task_fair() {
  2)               |                                  enqueue_entity() {
  2)   0.146 us    |                                    update_curr();
  2)   0.330 us    |                                    account_entity_enqueue();
  2)   0.280 us    |                                    update_cfs_shares();
  2)   0.321 us    |                                    place_entity();
  2)   0.206 us    |                                    __enqueue_entity();
  2)   6.926 us    |                                  }
  2)               |                                  enqueue_entity() {
  2)   0.105 us    |                                    update_curr();
  2)   0.175 us    |                                    account_entity_enqueue();
  2)   0.531 us    |                                    update_cfs_shares();
 #

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf tools: Allow sorting by symbol size
Charles Baylis [Fri, 24 Feb 2017 13:32:56 +0000 (13:32 +0000)]
perf tools: Allow sorting by symbol size

Add new sort key 'symbol_size' to allow user to sort by symbol size, or
(more usefully) display the symbol size using --fields=...,symbol_size.

Committer note:

Testing it together with the recently added -q, to remove the headers,
and using the '+' sign with -s, to add the symbol_size sort order to
the default, which is '-s/--sort comm,dso,symbol':

  # perf report -q -s +symbol_size | head -10
  10.39%  swapper       [kernel.vmlinux] [k] intel_idle               270
   3.45%  swapper       [kernel.vmlinux] [k] update_blocked_averages 1546
   2.61%  swapper       [kernel.vmlinux] [k] update_load_avg         1292
   2.36%  swapper       [kernel.vmlinux] [k] update_cfs_shares        240
   1.83%  swapper       [kernel.vmlinux] [k] __hrtimer_run_queues     606
   1.74%  swapper       [kernel.vmlinux] [k] update_cfs_rq_load_avg. 1187
   1.66%  swapper       [kernel.vmlinux] [k] apic_timer_interrupt     152
   1.60%  CPU 0/KVM     [kvm]            [k] kvm_set_msr_common      3046
   1.60%  gnome-shell   libglib-2.0.so.0 [.] g_slist_find              37
   1.46%  gnome-termina libglib-2.0.so.0 [.] g_hash_table_lookup      370
  #

Signed-off-by: Charles Baylis <charles.baylis@linaro.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1487943176-13840-1-git-send-email-charles.baylis@linaro.org
[ Use symbol__size(), remove needless %lld + (long long) casting ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf evlist: Clarify a bit the use of perf_mmap->refcnt
Arnaldo Carvalho de Melo [Thu, 23 Feb 2017 16:24:34 +0000 (13:24 -0300)]
perf evlist: Clarify a bit the use of perf_mmap->refcnt

This is an odd refcount use case, so add some more comments to help
understand that when it hits zero it really means that the mmap()ed area
(on a perf_event_open() returned fd) has been munmap()ed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170223162344.GD3595@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:35:03 +0000 (17:35 +0200)]
perf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-10-git-send-email-elena.reshetova@intel.com
[ Did missing tests/thread-map.c conversion ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf thread: convert thread.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:35:02 +0000 (17:35 +0200)]
perf thread: convert thread.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-9-git-send-email-elena.reshetova@intel.com
[ Did missing conversion in __machine__remove_thread() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf evlist: Convert perf_map.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:35:01 +0000 (17:35 +0200)]
perf evlist: Convert perf_map.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-8-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf map: Convert map_groups.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:35:00 +0000 (17:35 +0200)]
perf map: Convert map_groups.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-7-git-send-email-elena.reshetova@intel.com
[ Did the missing conversion of tests/thread-mg-share.c too ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf map: Convert map.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:34:59 +0000 (17:34 +0200)]
perf map: Convert map.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-6-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf dso: Convert dso.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:34:58 +0000 (17:34 +0200)]
perf dso: Convert dso.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-5-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf comm: Convert comm_str.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:34:57 +0000 (17:34 +0200)]
perf comm: Convert comm_str.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-4-git-send-email-elena.reshetova@intel.com
[ Reinstated comm_str__get() function, needed when reusing entries in the rbtree ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf cpumap: Convert cpu_map.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:34:56 +0000 (17:34 +0200)]
perf cpumap: Convert cpu_map.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-3-git-send-email-elena.reshetova@intel.com
[ fixed mixed conversion to refcount in tests/cpumap.c ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf cgroup: Convert cgroup_sel.refcnt from atomic_t to refcount_t
Elena Reshetova [Tue, 21 Feb 2017 15:34:55 +0000 (17:34 +0200)]
perf cgroup: Convert cgroup_sel.refcnt from atomic_t to refcount_t

The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.

This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Kook <keescook@chromium.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: alsa-devel@alsa-project.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Windsor <dwindsor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans Liljestrand <ishkamiel@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1487691303-31858-2-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools include: Adopt kernel's refcount.h
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 20:00:53 +0000 (17:00 -0300)]
tools include: Adopt kernel's refcount.h

To aid in catching bugs when using atomics as a reference count.

This is a trimmed down version with just what is used by tools/ at
this point.

After this, the patches submitted by Elena for tools/ doing the
conversion from atomic_ to recount_ methods can be applied and tested.

To activate it, buint perf with:

  make DEBUG=1 -C tools/perf

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-dqtxsumns9ov0l9r5x398f19@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools include: Add UINT_MAX def to kernel.h
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 20:42:40 +0000 (17:42 -0300)]
tools include: Add UINT_MAX def to kernel.h

The kernel has it and some files we got from there would require us
including the userland header for that, so add it conditionally.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-gmwyal7c9vzzttlyk6u59rzn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools include: Provide gcc based cmpxchg fallback for !x86
Arnaldo Carvalho de Melo [Thu, 23 Feb 2017 18:33:02 +0000 (15:33 -0300)]
tools include: Provide gcc based cmpxchg fallback for !x86

We've been using an atomic_t implementation subset based on the gcc
builtin functions for a while, now, with refcount.h we need cmpxchg(),
use gcc's __sync_val_compare_and_swap() for that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-b9zovyxgpa0c4vi3nm0kjo97@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools include: Introduce atomic_cmpxchg_{relaxed,release}()
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 19:57:53 +0000 (16:57 -0300)]
tools include: Introduce atomic_cmpxchg_{relaxed,release}()

Will be used by refcnt.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-jszriruqfqpez1bkivwfj6qb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools arch x86: Introduce atomic_cmpxchg()
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 19:55:43 +0000 (16:55 -0300)]
tools arch x86: Introduce atomic_cmpxchg()

Will be used by atomic_cmpxchg_relaxed(), in turn used by refcount.h.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kdmovd3l4gw5b1w31ypr6ddv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools arch x86: Include asm/cmpxchg.h
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 19:54:53 +0000 (16:54 -0300)]
tools arch x86: Include asm/cmpxchg.h

Will be included from atomic.h and used in refcount.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-pzrydfee75mhq64kazxmf9it@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agotools include: Adopt __compiletime_error
Arnaldo Carvalho de Melo [Wed, 22 Feb 2017 19:48:24 +0000 (16:48 -0300)]
tools include: Adopt __compiletime_error

From the kernel, get the gcc one and provide the fallback so that we can
continue build with other compilers, such as with clang.

Will be used by tools/arch/x86/include/asm/cmpxchg.h.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-pecgz6efai4a9euuk4rxuotr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf stat: Issue a HW watchdog disable hint
Borislav Petkov [Tue, 7 Feb 2017 00:40:05 +0000 (01:40 +0100)]
perf stat: Issue a HW watchdog disable hint

When using perf stat on an AMD F15h system with the default hw events
attributes, some of the events don't get counted:

 Performance counter stats for 'sleep 1':

          0.749208      task-clock (msec)         #    0.001 CPUs utilized
                 1      context-switches          #    0.001 M/sec
                 0      cpu-migrations            #    0.000 K/sec
                54      page-faults               #    0.072 M/sec
         1,122,815      cycles                    #    1.499 GHz
           286,740      stalled-cycles-frontend   #   25.54% frontend cycles idle
     <not counted>      stalled-cycles-backend                                        (0.00%)
     ^^^^^^^^^^^^
     <not counted>      instructions                                                  (0.00%)
     ^^^^^^^^^^^^
     <not counted>      branches                                                      (0.00%)
     <not counted>      branch-misses                                                 (0.00%)

       1.001550070 seconds time elapsed

The reason is that we have the HW watchdog consuming one PMU counter and
when perf tries to schedule 6 events on 6 counters and some of those
counters are constrained to only a specific subset of PMCs by the
hardware, the event scheduling fails.

So issue a hint to disable the HW watchdog around a perf stat session.

Committer note:

Testing it...

  # perf stat -d usleep 1

   Performance counter stats for 'usleep 1':

          1.180203      task-clock (msec)         #    0.490 CPUs utilized
                 1      context-switches          #    0.847 K/sec
                 0      cpu-migrations            #    0.000 K/sec
                54      page-faults               #    0.046 M/sec
           184,754      cycles                    #    0.157 GHz
           714,553      instructions              #    3.87  insn per cycle
           154,661      branches                  #  131.046 M/sec
             7,247      branch-misses             #    4.69% of all branches
           219,984      L1-dcache-loads           #  186.395 M/sec
            17,600      L1-dcache-load-misses     #    8.00% of all L1-dcache hits    (90.16%)
     <not counted>      LLC-loads                                                     (0.00%)
     <not counted>      LLC-load-misses                                               (0.00%)

       0.002406823 seconds time elapsed

  Some events weren't counted. Try disabling the NMI watchdog:
echo 0 > /proc/sys/kernel/nmi_watchdog
perf stat ...
echo 1 > /proc/sys/kernel/nmi_watchdog
  #

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <rric@kernel.org>
Cc: Vince Weaver <vince@deater.net>
Link: http://lkml.kernel.org/r/20170211183218.ijnvb5f7ciyuunx4@pd.tnic
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoperf vendor events: Add mapping for KnightsMill PMU events
Karol Wachowski [Mon, 20 Feb 2017 11:50:40 +0000 (12:50 +0100)]
perf vendor events: Add mapping for KnightsMill PMU events

Reuse events from KnightsLanding for KnightsMill

Signed-off-by: Karol Wachowski <karol.wachowski@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peter.zijlstra@intel.com>
Cc: Piotr Luc <piotr.luc@intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: http://lkml.kernel.org/r/1487591440-25172-1-git-send-email-karol.wachowski@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Fri, 3 Mar 2017 20:14:13 +0000 (12:14 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse update from Miklos Szeredi:
 "A bugfix and cleanups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: release: private_data cannot be NULL
  fuse: cleanup fuse_file refcounting
  fuse: add missing FR_FORCE

7 years agoMerge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
Linus Torvalds [Fri, 3 Mar 2017 19:55:57 +0000 (11:55 -0800)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs updates from Miklos Szeredi:
 "Because copy up can take a long time, serialized copy ups could be a
  big performance bottleneck. This update allows concurrent copy up of
  regular files eliminating this potential problem.

  There are also minor fixes"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: drop CAP_SYS_RESOURCE from saved mounter's credentials
  ovl: properly implement sync_filesystem()
  ovl: concurrent copy up of regular files
  ovl: introduce copy up waitqueue
  ovl: copy up regular file using O_TMPFILE
  ovl: rearrange code in ovl_copy_up_locked()
  ovl: check if upperdir fs supports O_TMPFILE

7 years agoMerge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Fri, 3 Mar 2017 19:38:56 +0000 (11:38 -0800)]
Merge branch 'rebased-statx' of git://git./linux/kernel/git/viro/vfs

Pull vfs 'statx()' update from Al Viro.

This adds the new extended stat() interface that internally subsumes our
previous stat interfaces, and allows user mode to specify in more detail
what kind of information it wants.

It also allows for some explicit synchronization information to be
passed to the filesystem, which can be relevant for network filesystems:
is the cached value ok, or do you need open/close consistency, or what?

From David Howells.

Andreas Dilger points out that the first version of the extended statx
interface was posted June 29, 2010:

    https://www.spinics.net/lists/linux-fsdevel/msg33831.html

* 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  statx: Add a system call to make enhanced file info available

7 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 3 Mar 2017 18:53:35 +0000 (10:53 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block layer fixes from Jens Axboe:
 "A collection of fixes for this merge window, either fixes for existing
  issues, or parts that were waiting for acks to come in. This pull
  request contains:

   - Allocation of nvme queues on the right node from Shaohua.

     This was ready long before the merge window, but waiting on an ack
     from Bjorn on the PCI bit. Now that we have that, the three patches
     can go in.

   - Two fixes for blk-mq-sched with nvmeof, which uses hctx specific
     request allocations. This caused an oops. One part from Sagi, one
     part from Omar.

   - A loop partition scan deadlock fix from Omar, fixing a regression
     in this merge window.

   - A three-patch series from Keith, closing up a hole on clearing out
     requests on shutdown/resume.

   - A stable fix for nbd from Josef, fixing a leak of sockets.

   - Two fixes for a regression in this window from Jan, fixing a
     problem with one of his earlier patches dealing with queue vs bdi
     life times.

   - A fix for a regression with virtio-blk, causing an IO stall if
     scheduling is used. From me.

   - A fix for an io context lock ordering problem. From me"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Move bdi_unregister() to del_gendisk()
  blk-mq: ensure that bd->last is always set correctly
  block: don't call ioc_exit_icq() with the queue lock held for blk-mq
  block: Initialize bd_bdi on inode initialization
  loop: fix LO_FLAGS_PARTSCAN hang
  nvme: Complete all stuck requests
  blk-mq: Provide freeze queue timeout
  blk-mq: Export blk_mq_freeze_queue_wait
  nbd: stop leaking sockets
  blk-mq: move update of tags->rqs to __blk_mq_alloc_request()
  blk-mq: kill blk_mq_set_alloc_data()
  blk-mq: make blk_mq_alloc_request_hctx() allocate a scheduler request
  blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset
  nvme: allocate nvme_queue in correct node
  PCI: add an API to get node from vector
  blk-mq: allocate blk_mq_tags and requests in correct node

7 years agoMerge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 3 Mar 2017 18:16:38 +0000 (10:16 -0800)]
Merge branch 'WIP.sched-core-for-linus' of git://git./linux/kernel/git/tip/tip

Pull sched.h split-up from Ingo Molnar:
 "The point of these changes is to significantly reduce the
  <linux/sched.h> header footprint, to speed up the kernel build and to
  have a cleaner header structure.

  After these changes the new <linux/sched.h>'s typical preprocessed
  size goes down from a previous ~0.68 MB (~22K lines) to ~0.45 MB (~15K
  lines), which is around 40% faster to build on typical configs.

  Not much changed from the last version (-v2) posted three weeks ago: I
  eliminated quirks, backmerged fixes plus I rebased it to an upstream
  SHA1 from yesterday that includes most changes queued up in -next plus
  all sched.h changes that were pending from Andrew.

  I've re-tested the series both on x86 and on cross-arch defconfigs,
  and did a bisectability test at a number of random points.

  I tried to test as many build configurations as possible, but some
  build breakage is probably still left - but it should be mostly
  limited to architectures that have no cross-compiler binaries
  available on kernel.org, and non-default configurations"

* 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (146 commits)
  sched/headers: Clean up <linux/sched.h>
  sched/headers: Remove #ifdefs from <linux/sched.h>
  sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>
  sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
  sched/headers, x86/apic: Remove the <linux/pm.h> header inclusion from <asm/apic.h>
  sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h>
  sched/headers: Remove <linux/magic.h> from <linux/sched/task_stack.h>
  sched/headers: Remove <linux/sched.h> from <linux/sched/init.h>
  sched/core: Remove unused prefetch_stack()
  sched/headers: Remove <linux/rculist.h> from <linux/sched.h>
  sched/headers: Remove the 'init_pid_ns' prototype from <linux/sched.h>
  sched/headers: Remove <linux/signal.h> from <linux/sched.h>
  sched/headers: Remove <linux/rwsem.h> from <linux/sched.h>
  sched/headers: Remove the runqueue_is_locked() prototype
  sched/headers: Remove <linux/sched.h> from <linux/sched/hotplug.h>
  sched/headers: Remove <linux/sched.h> from <linux/sched/debug.h>
  sched/headers: Remove <linux/sched.h> from <linux/sched/nohz.h>
  sched/headers: Remove <linux/sched.h> from <linux/sched/stat.h>
  sched/headers: Remove the <linux/gfp.h> include from <linux/sched.h>
  sched/headers: Remove <linux/rtmutex.h> from <linux/sched.h>
  ...

7 years agoMerge tag 'linux-kselftest-4.11-rc1-urgent_fix' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Fri, 3 Mar 2017 18:13:12 +0000 (10:13 -0800)]
Merge tag 'linux-kselftest-4.11-rc1-urgent_fix' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:
 "This update consists of an urgent fix for individual test build
  failures introduced in the 4.11-rc1 update"

* tag 'linux-kselftest-4.11-rc1-urgent_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: lib.mk Fix individual test builds

7 years agoMerge branch 'sfx-fixes'
David S. Miller [Fri, 3 Mar 2017 18:06:39 +0000 (10:06 -0800)]
Merge branch 'sfx-fixes'

Edward Cree says:

====================
sfc: couple of fixes

First patch addresses a construct that causes sparse to error out.
With that fixed, sparse makes some warnings on ef10.c, second patch
 fixes one of them.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosfc: fix IPID endianness in TSOv2
Edward Cree [Fri, 3 Mar 2017 15:22:27 +0000 (15:22 +0000)]
sfc: fix IPID endianness in TSOv2

The value we read from the header is in network byte order, whereas
 EFX_POPULATE_QWORD_* takes values in host byte order (which it then
 converts to little-endian, as MCDI is little-endian).

Fixes: e9117e5099ea ("sfc: Firmware-Assisted TSO version 2")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosfc: avoid max() in array size
Edward Cree [Fri, 3 Mar 2017 15:22:09 +0000 (15:22 +0000)]
sfc: avoid max() in array size

It confuses sparse, which thinks the size isn't constant.  Let's achieve
 the same thing with a BUILD_BUG_ON, since we know which one should be
 bigger and don't expect them ever to change.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'linux-can-fixes-for-4.11-20170303' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Fri, 3 Mar 2017 17:58:17 +0000 (09:58 -0800)]
Merge tag 'linux-can-fixes-for-4.11-20170303' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2017-03-03

this is a pull request for the upcoming v4.11 release.

There are two patches by Ethan Zonca for the gs_usb driver, the first one fixes
the memory used for USB transfers, the second one the coding style.

The last two patches are by me, one fixing a memory leak in the usb_8dev driver
the other a typo in the flexcan driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agords: remove unnecessary returned value check
Zhu Yanjun [Fri, 3 Mar 2017 05:44:26 +0000 (00:44 -0500)]
rds: remove unnecessary returned value check

The function rds_trans_register always returns 0. As such, it is not
necessary to check the returned value.

Cc: Joe Jin <joe.jin@oracle.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agorxrpc: Fix potential NULL-pointer exception
David Howells [Thu, 2 Mar 2017 23:48:52 +0000 (23:48 +0000)]
rxrpc: Fix potential NULL-pointer exception

Fix a potential NULL-pointer exception in rxrpc_do_sendmsg().  The call
state check that I added should have gone into the else-body of the
if-statement where we actually have a call to check.

Found by CoverityScan CID#1414316 ("Dereference after null check").

Fixes: 540b1c48c37a ("rxrpc: Fix deadlock between call creation and sendmsg/recvmsg")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'nfp-fixes'
David S. Miller [Fri, 3 Mar 2017 17:46:54 +0000 (09:46 -0800)]
Merge branch 'nfp-fixes'

Jakub Kicinski says:

====================
nfp: RX and XDP buffer fixes

Two trivial fixes for code introduced with XDP support.  First
one corrects the buffer size we populate a register with.  The
register is designed to be used for scatter transfers which
the driver (and most FWs) don't support so it's not critical.
The other one for DMA direction is mostly cosmetic, DMA API
doesn't seem to care today about the precise direction in sync
calls.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonfp: correct DMA direction in XDP DMA sync
Jakub Kicinski [Thu, 2 Mar 2017 23:26:21 +0000 (15:26 -0800)]
nfp: correct DMA direction in XDP DMA sync

dma_sync_single_for_*() takes the direction in which the buffer
was mapped, not the direction of the sync.  We should sync XDP
buffers bidirectionally.

Fixes: ecd63a0217d5 ("nfp: add XDP support in the driver")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonfp: don't tell FW about the reserved buffer space
Jakub Kicinski [Thu, 2 Mar 2017 23:26:20 +0000 (15:26 -0800)]
nfp: don't tell FW about the reserved buffer space

Since commit c0f031bc8866 ("nfp_net: use alloc_frag() and build_skb()")
we are allocating buffers which have to hold both the data and skb to
be created in place by build_skb().

FW should only be told about the buffer space it can DMA to, that
is without the build_skb() headroom and tailroom.  Note: firmware
applications should validate the buffers against both MTU and
free list buffer size so oversized packets would not pass through
the NIC anyway.

Fixes: c0f031bc8866 ("nfp: use alloc_frag() and build_skb()")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'bgmac-fixes'
David S. Miller [Fri, 3 Mar 2017 17:44:28 +0000 (09:44 -0800)]
Merge branch 'bgmac-fixes'

Jon Mason says:

====================
net: ethernet: bgmac: bug fixes

Changes in v5:
* Rebased to the latest code and fixed up a compile error due to the
  mac_addr struct going away (found by David Miller)

Changes in v4:
* Added the udelays from the previous code (per David Miller)

Changes in v3:
* Reworked the init sequence patch to only remove the device reset if
  the device is actually in reset.  Given that this code doesn't bear
  much resemblance to the original code, I'm changing the author of the
  patch.  This was tested on NS2 SVK.

Changes in v2:
* Reworked the first match to make it more obvious what portions of the
  register were being preserved (Per Rafal Mileki)
* Style change to reorder the function variables in patch 2 (per Sergei
  Shtylyov)

Bug fixes for bgmac driver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: bgmac: mac address change bug
Hari Vyas [Thu, 2 Mar 2017 22:59:57 +0000 (17:59 -0500)]
net: ethernet: bgmac: mac address change bug

ndo_set_mac_address() passes struct sockaddr * as 2nd parameter to
bgmac_set_mac_address() but code assumed u8 *.  This caused two bytes
chopping and the wrong mac address was configured.

Signed-off-by: Hari Vyas <hariv@broadcom.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Fixes: 4e209001b86 ("bgmac: write mac address to hardware in ndo_set_mac_address")
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: bgmac: init sequence bug
Jon Mason [Thu, 2 Mar 2017 22:59:56 +0000 (17:59 -0500)]
net: ethernet: bgmac: init sequence bug

Fix a bug in the 'bgmac' driver init sequence that blind writes for init
sequence where it should preserve most bits other than the ones it is
deliberately manipulating.

The code now checks to see if the adapter needs to be brought out of
reset (where as before it was doing an IDM write to bring it out of
reset regardless of whether it was in reset or not).  Also, removed
unnecessary usleeps (as there is already a read present to flush the
IDM writes).

Signed-off-by: Zac Schroff <zschroff@broadcom.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Fixes: f6a95a24957 ("net: ethernet: bgmac: Add platform device support")
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'xen-netback-fixes'
David S. Miller [Fri, 3 Mar 2017 17:36:15 +0000 (09:36 -0800)]
Merge branch 'xen-netback-fixes'

Paul Durrant says:

====================
xen-netback: update memory leak fix to avoid BUG

Commit 9a6cdf52b85e "xen-netback: fix memory leaks on XenBus disconnect"
added missing code to fix a memory leak by calling vfree() in the
appropriate place.
Unfortunately subsequent commit f16f1df65f1c "xen-netback: protect
resource cleaning on XenBus disconnect" then wrapped this call to vfree()
in a spin lock, leading to a BUG due to incorrect context.

Patch #1 makes the existing code more readable
Patch #2 fixes the problem
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxen-netback: don't vfree() queues under spinlock
Paul Durrant [Thu, 2 Mar 2017 12:54:26 +0000 (12:54 +0000)]
xen-netback: don't vfree() queues under spinlock

This leads to a BUG of the following form:

[  174.512861] switch: port 2(vif3.0) entered disabled state
[  174.522735] BUG: sleeping function called from invalid context at
/home/build/linux-linus/mm/vmalloc.c:1441
[  174.523451] in_atomic(): 1, irqs_disabled(): 0, pid: 28, name: xenwatch
[  174.524131] CPU: 1 PID: 28 Comm: xenwatch Tainted: G        W
4.10.0upstream-11073-g4977ab6-dirty #1
[  174.524819] Hardware name: MSI MS-7680/H61M-P23 (MS-7680), BIOS V17.0
03/14/2011
[  174.525517] Call Trace:
[  174.526217]  show_stack+0x23/0x60
[  174.526899]  dump_stack+0x5b/0x88
[  174.527562]  ___might_sleep+0xde/0x130
[  174.528208]  __might_sleep+0x35/0xa0
[  174.528840]  ? _raw_spin_unlock_irqrestore+0x13/0x20
[  174.529463]  ? __wake_up+0x40/0x50
[  174.530089]  remove_vm_area+0x20/0x90
[  174.530724]  __vunmap+0x1d/0xc0
[  174.531346]  ? delete_object_full+0x13/0x20
[  174.531973]  vfree+0x40/0x80
[  174.532594]  set_backend_state+0x18a/0xa90
[  174.533221]  ? dwc_scan_descriptors+0x24d/0x430
[  174.533850]  ? kfree+0x5b/0xc0
[  174.534476]  ? xenbus_read+0x3d/0x50
[  174.535101]  ? xenbus_read+0x3d/0x50
[  174.535718]  ? xenbus_gather+0x31/0x90
[  174.536332]  ? ___might_sleep+0xf6/0x130
[  174.536945]  frontend_changed+0x6b/0xd0
[  174.537565]  xenbus_otherend_changed+0x7d/0x80
[  174.538185]  frontend_changed+0x12/0x20
[  174.538803]  xenwatch_thread+0x74/0x110
[  174.539417]  ? woken_wake_function+0x20/0x20
[  174.540049]  kthread+0xe5/0x120
[  174.540663]  ? xenbus_printf+0x50/0x50
[  174.541278]  ? __kthread_init_worker+0x40/0x40
[  174.541898]  ret_from_fork+0x21/0x2c
[  174.548635] switch: port 2(vif3.0) entered disabled state

This patch defers the vfree() until after the spinlock is released.

Reported-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxen-netback: keep a local pointer for vif in backend_disconnect()
Paul Durrant [Thu, 2 Mar 2017 12:54:25 +0000 (12:54 +0000)]
xen-netback: keep a local pointer for vif in backend_disconnect()

This patch replaces use of 'be->vif' with 'vif' and hence generally
makes the function look tidier. No semantic change.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Fri, 3 Mar 2017 17:29:49 +0000 (09:29 -0800)]
Merge branch '10GbE' of git://git./linux/kernel/git/jkirsher/net-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2017-03-02

This series contains fixes to ixgbe only.

Paolo fixes the driver so that you can actually update the RSS key value
via ethtool.

Alex fixes an issue on architectures that have a cache line size larger
than 64 Bytes, where the amount of headroom for the frame starts
shrinking.  To take this into account, Alex adds one small check so that
we compare the max_frame to the amount of actual data we can store, so
we will automatically enable 3K receive buffers as soon as the maximum
frame size we can handle drops below the standard Ethernet MTU.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails
Pablo Neira Ayuso [Wed, 1 Mar 2017 11:52:31 +0000 (12:52 +0100)]
netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails

The underlying nlmsg_multicast() already sets sk->sk_err for us to
notify socket overruns, so we should not do anything with this return
value. So we just call nfnetlink_set_err() if:

1) We fail to allocate the netlink message.

or

2) We don't have enough space in the netlink message to place attributes,
   which means that we likely need to allocate a larger message.

Before this patch, the internal ESRCH netlink error code was propagated
to userspace, which is quite misleading. Netlink semantics mandate that
listeners just hit ENOBUFS if the socket buffer overruns.

Reported-by: Alexander Alemayhu <alexander@alemayhu.com>
Tested-by: Alexander Alemayhu <alexander@alemayhu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agonetfilter: nft_set_rbtree: incorrect assumption on lower interval lookups
Pablo Neira Ayuso [Wed, 1 Mar 2017 17:15:11 +0000 (18:15 +0100)]
netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups

In case of adjacent ranges, we may indeed see either the high part of
the range in first place or the low part of it. Remove this incorrect
assumption, let's make sure we annotate the low part of the interval in
case of we have adjacent interva intervals so we hit a matching in
lookups.

Reported-by: Simon Hanisch <hanisch@wh2.tu-dresden.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agonetfilter: nf_conntrack_sip: fix wrong memory initialisation
Christophe Leroy [Wed, 1 Mar 2017 14:33:26 +0000 (15:33 +0100)]
netfilter: nf_conntrack_sip: fix wrong memory initialisation

In commit 82de0be6862cd ("netfilter: Add helper array
register/unregister functions"),
struct nf_conntrack_helper sip[MAX_PORTS][4] was changed to
sip[MAX_PORTS * 4], so the memory init should have been changed to
memset(&sip[4 * i], 0, 4 * sizeof(sip[i]));

But as the sip[] table is allocated in the BSS, it is already set to 0

Fixes: 82de0be6862cd ("netfilter: Add helper array register/unregister functions")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agocan: flexcan: fix typo in comment
Marc Kleine-Budde [Thu, 2 Mar 2017 14:42:49 +0000 (15:42 +0100)]
can: flexcan: fix typo in comment

This patch fixes the typo "Disble" -> "Disable".

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agocan: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
Marc Kleine-Budde [Thu, 2 Mar 2017 11:03:40 +0000 (12:03 +0100)]
can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer

The priv->cmd_msg_buffer is allocated in the probe function, but never
kfree()ed. This patch converts the kzalloc() to resource-managed
kzalloc.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agocan: gs_usb: fix coding style
Ethan Zonca [Fri, 24 Feb 2017 16:00:34 +0000 (11:00 -0500)]
can: gs_usb: fix coding style

This patch fixes five minor style issues, spaces are between bitwise OR
operators.

Signed-off-by: Ethan Zonca <e@ethanzonca.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agocan: gs_usb: Don't use stack memory for USB transfers
Ethan Zonca [Fri, 24 Feb 2017 16:27:36 +0000 (11:27 -0500)]
can: gs_usb: Don't use stack memory for USB transfers

Fixes: 05ca5270005c can: gs_usb: add ethtool set_phys_id callback to locate physical device
The gs_usb driver is performing USB transfers using buffers allocated on
the stack. This causes the driver to not function with vmapped stacks.
Instead, allocate memory for the transfer buffers.

Signed-off-by: Ethan Zonca <e@ethanzonca.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v4.8
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agosmb2: Enforce sec= mount option
Sachin Prabhu [Wed, 18 Jan 2017 10:05:57 +0000 (15:35 +0530)]
smb2: Enforce sec= mount option

If the security type specified using a mount option is not supported,
the SMB2 session setup code changes the security type to RawNTLMSSP. We
should instead fail the mount and return an error.

The patch changes the code for SMB2 to make it similar to the code used
for SMB1. Like in SMB1, we now use the global security flags to select
the security method to be used when no security method is specified and
to return an error when the requested auth method is not available.

For SMB2, we also use ntlmv2 as a synonym for nltmssp.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
7 years agoCIFS: Fix sparse warnings
Steve French [Thu, 2 Mar 2017 21:42:48 +0000 (15:42 -0600)]
CIFS: Fix sparse warnings

Fix two minor sparse compile check warnings

Signed-off-by: Steve French <steve.french@primarydata.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
7 years agoixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines
Alexander Duyck [Fri, 3 Feb 2017 17:19:40 +0000 (09:19 -0800)]
ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines

On architectures that have a cache line size larger than 64 Bytes we start
running into issues where the amount of headroom for the frame starts
shrinking.

The size of skb_shared_info on a system with a 64B L1 cache line size is
320.  This increases to 384 with a 128B cache line, and 512 with a 256B
cache line.

In addition the NET_SKB_PAD value increases as well consistent with the
cache line size.  As a result when we get to a 256B cache line as seen on
the s390 we end up 768 bytes used by padding and shared info leaving us
with only 1280 bytes to use for data storage.  On architectures such as
this we should default to using 3K Rx buffers out of a 8K page instead of
trying to do 1.5K buffers out of a 4K page.

To take all of this into account I have added one small check so that we
compare the max_frame to the amount of actual data we can store.  This was
already occurring for igb, but I had overlooked it for ixgbe as it doesn't
have strict limits for 82599 once we enable jumbo frames.  By adding this
check we will automatically enable 3K Rx buffers as soon as the maximum
frame size we can handle drops below the standard Ethernet MTU.

I also went through and fixed one small typo that I found where I had left
an IGB in a variable name due to a copy/paste error.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agostatx: Add a system call to make enhanced file info available
David Howells [Tue, 31 Jan 2017 16:46:22 +0000 (16:46 +0000)]
statx: Add a system call to make enhanced file info available

Add a system call to make extended file information available, including
file creation and some attribute flags where available through the
underlying filesystem.

The getattr inode operation is altered to take two additional arguments: a
u32 request_mask and an unsigned int flags that indicate the
synchronisation mode.  This change is propagated to the vfs_getattr*()
function.

Functions like vfs_stat() are now inline wrappers around new functions
vfs_statx() and vfs_statx_fd() to reduce stack usage.

========
OVERVIEW
========

The idea was initially proposed as a set of xattrs that could be retrieved
with getxattr(), but the general preference proved to be for a new syscall
with an extended stat structure.

A number of requests were gathered for features to be included.  The
following have been included:

 (1) Make the fields a consistent size on all arches and make them large.

 (2) Spare space, request flags and information flags are provided for
     future expansion.

 (3) Better support for the y2038 problem [Arnd Bergmann] (tv_sec is an
     __s64).

 (4) Creation time: The SMB protocol carries the creation time, which could
     be exported by Samba, which will in turn help CIFS make use of
     FS-Cache as that can be used for coherency data (stx_btime).

     This is also specified in NFSv4 as a recommended attribute and could
     be exported by NFSD [Steve French].

 (5) Lightweight stat: Ask for just those details of interest, and allow a
     netfs (such as NFS) to approximate anything not of interest, possibly
     without going to the server [Trond Myklebust, Ulrich Drepper, Andreas
     Dilger] (AT_STATX_DONT_SYNC).

 (6) Heavyweight stat: Force a netfs to go to the server, even if it thinks
     its cached attributes are up to date [Trond Myklebust]
     (AT_STATX_FORCE_SYNC).

And the following have been left out for future extension:

 (7) Data version number: Could be used by userspace NFS servers [Aneesh
     Kumar].

     Can also be used to modify fill_post_wcc() in NFSD which retrieves
     i_version directly, but has just called vfs_getattr().  It could get
     it from the kstat struct if it used vfs_xgetattr() instead.

     (There's disagreement on the exact semantics of a single field, since
     not all filesystems do this the same way).

 (8) BSD stat compatibility: Including more fields from the BSD stat such
     as creation time (st_btime) and inode generation number (st_gen)
     [Jeremy Allison, Bernd Schubert].

 (9) Inode generation number: Useful for FUSE and userspace NFS servers
     [Bernd Schubert].

     (This was asked for but later deemed unnecessary with the
     open-by-handle capability available and caused disagreement as to
     whether it's a security hole or not).

(10) Extra coherency data may be useful in making backups [Andreas Dilger].

     (No particular data were offered, but things like last backup
     timestamp, the data version number and the DOS archive bit would come
     into this category).

(11) Allow the filesystem to indicate what it can/cannot provide: A
     filesystem can now say it doesn't support a standard stat feature if
     that isn't available, so if, for instance, inode numbers or UIDs don't
     exist or are fabricated locally...

     (This requires a separate system call - I have an fsinfo() call idea
     for this).

(12) Store a 16-byte volume ID in the superblock that can be returned in
     struct xstat [Steve French].

     (Deferred to fsinfo).

(13) Include granularity fields in the time data to indicate the
     granularity of each of the times (NFSv4 time_delta) [Steve French].

     (Deferred to fsinfo).

(14) FS_IOC_GETFLAGS value.  These could be translated to BSD's st_flags.
     Note that the Linux IOC flags are a mess and filesystems such as Ext4
     define flags that aren't in linux/fs.h, so translation in the kernel
     may be a necessity (or, possibly, we provide the filesystem type too).

     (Some attributes are made available in stx_attributes, but the general
     feeling was that the IOC flags were to ext[234]-specific and shouldn't
     be exposed through statx this way).

(15) Mask of features available on file (eg: ACLs, seclabel) [Brad Boyer,
     Michael Kerrisk].

     (Deferred, probably to fsinfo.  Finding out if there's an ACL or
     seclabal might require extra filesystem operations).

(16) Femtosecond-resolution timestamps [Dave Chinner].

     (A __reserved field has been left in the statx_timestamp struct for
     this - if there proves to be a need).

(17) A set multiple attributes syscall to go with this.

===============
NEW SYSTEM CALL
===============

The new system call is:

int ret = statx(int dfd,
const char *filename,
unsigned int flags,
unsigned int mask,
struct statx *buffer);

The dfd, filename and flags parameters indicate the file to query, in a
similar way to fstatat().  There is no equivalent of lstat() as that can be
emulated with statx() by passing AT_SYMLINK_NOFOLLOW in flags.  There is
also no equivalent of fstat() as that can be emulated by passing a NULL
filename to statx() with the fd of interest in dfd.

Whether or not statx() synchronises the attributes with the backing store
can be controlled by OR'ing a value into the flags argument (this typically
only affects network filesystems):

 (1) AT_STATX_SYNC_AS_STAT tells statx() to behave as stat() does in this
     respect.

 (2) AT_STATX_FORCE_SYNC will require a network filesystem to synchronise
     its attributes with the server - which might require data writeback to
     occur to get the timestamps correct.

 (3) AT_STATX_DONT_SYNC will suppress synchronisation with the server in a
     network filesystem.  The resulting values should be considered
     approximate.

mask is a bitmask indicating the fields in struct statx that are of
interest to the caller.  The user should set this to STATX_BASIC_STATS to
get the basic set returned by stat().  It should be noted that asking for
more information may entail extra I/O operations.

buffer points to the destination for the data.  This must be 256 bytes in
size.

======================
MAIN ATTRIBUTES RECORD
======================

The following structures are defined in which to return the main attribute
set:

struct statx_timestamp {
__s64 tv_sec;
__s32 tv_nsec;
__s32 __reserved;
};

struct statx {
__u32 stx_mask;
__u32 stx_blksize;
__u64 stx_attributes;
__u32 stx_nlink;
__u32 stx_uid;
__u32 stx_gid;
__u16 stx_mode;
__u16 __spare0[1];
__u64 stx_ino;
__u64 stx_size;
__u64 stx_blocks;
__u64 __spare1[1];
struct statx_timestamp stx_atime;
struct statx_timestamp stx_btime;
struct statx_timestamp stx_ctime;
struct statx_timestamp stx_mtime;
__u32 stx_rdev_major;
__u32 stx_rdev_minor;
__u32 stx_dev_major;
__u32 stx_dev_minor;
__u64 __spare2[14];
};

The defined bits in request_mask and stx_mask are:

STATX_TYPE Want/got stx_mode & S_IFMT
STATX_MODE Want/got stx_mode & ~S_IFMT
STATX_NLINK Want/got stx_nlink
STATX_UID Want/got stx_uid
STATX_GID Want/got stx_gid
STATX_ATIME Want/got stx_atime{,_ns}
STATX_MTIME Want/got stx_mtime{,_ns}
STATX_CTIME Want/got stx_ctime{,_ns}
STATX_INO Want/got stx_ino
STATX_SIZE Want/got stx_size
STATX_BLOCKS Want/got stx_blocks
STATX_BASIC_STATS [The stuff in the normal stat struct]
STATX_BTIME Want/got stx_btime{,_ns}
STATX_ALL [All currently available stuff]

stx_btime is the file creation time, stx_mask is a bitmask indicating the
data provided and __spares*[] are where as-yet undefined fields can be
placed.

Time fields are structures with separate seconds and nanoseconds fields
plus a reserved field in case we want to add even finer resolution.  Note
that times will be negative if before 1970; in such a case, the nanosecond
fields will also be negative if not zero.

The bits defined in the stx_attributes field convey information about a
file, how it is accessed, where it is and what it does.  The following
attributes map to FS_*_FL flags and are the same numerical value:

STATX_ATTR_COMPRESSED File is compressed by the fs
STATX_ATTR_IMMUTABLE File is marked immutable
STATX_ATTR_APPEND File is append-only
STATX_ATTR_NODUMP File is not to be dumped
STATX_ATTR_ENCRYPTED File requires key to decrypt in fs

Within the kernel, the supported flags are listed by:

KSTAT_ATTR_FS_IOC_FLAGS

[Are any other IOC flags of sufficient general interest to be exposed
through this interface?]

New flags include:

STATX_ATTR_AUTOMOUNT Object is an automount trigger

These are for the use of GUI tools that might want to mark files specially,
depending on what they are.

Fields in struct statx come in a number of classes:

 (0) stx_dev_*, stx_blksize.

     These are local system information and are always available.

 (1) stx_mode, stx_nlinks, stx_uid, stx_gid, stx_[amc]time, stx_ino,
     stx_size, stx_blocks.

     These will be returned whether the caller asks for them or not.  The
     corresponding bits in stx_mask will be set to indicate whether they
     actually have valid values.

     If the caller didn't ask for them, then they may be approximated.  For
     example, NFS won't waste any time updating them from the server,
     unless as a byproduct of updating something requested.

     If the values don't actually exist for the underlying object (such as
     UID or GID on a DOS file), then the bit won't be set in the stx_mask,
     even if the caller asked for the value.  In such a case, the returned
     value will be a fabrication.

     Note that there are instances where the type might not be valid, for
     instance Windows reparse points.

 (2) stx_rdev_*.

     This will be set only if stx_mode indicates we're looking at a
     blockdev or a chardev, otherwise will be 0.

 (3) stx_btime.

     Similar to (1), except this will be set to 0 if it doesn't exist.

=======
TESTING
=======

The following test program can be used to test the statx system call:

samples/statx/test-statx.c

Just compile and run, passing it paths to the files you want to examine.
The file is built automatically if CONFIG_SAMPLES is enabled.

Here's some example output.  Firstly, an NFS directory that crosses to
another FSID.  Note that the AUTOMOUNT attribute is set because transiting
this directory will cause d_automount to be invoked by the VFS.

[root@andromeda ~]# /tmp/test-statx -A /warthog/data
statx(/warthog/data) = 0
results=7ff
  Size: 4096            Blocks: 8          IO Block: 1048576  directory
Device: 00:26           Inode: 1703937     Links: 125
Access: (3777/drwxrwxrwx)  Uid:     0   Gid:  4041
Access: 2016-11-24 09:02:12.219699527+0000
Modify: 2016-11-17 10:44:36.225653653+0000
Change: 2016-11-17 10:44:36.225653653+0000
Attributes: 0000000000001000 (-------- -------- -------- -------- -------- -------- ---m---- --------)

Secondly, the result of automounting on that directory.

[root@andromeda ~]# /tmp/test-statx /warthog/data
statx(/warthog/data) = 0
results=7ff
  Size: 4096            Blocks: 8          IO Block: 1048576  directory
Device: 00:27           Inode: 2           Links: 125
Access: (3777/drwxrwxrwx)  Uid:     0   Gid:  4041
Access: 2016-11-24 09:02:12.219699527+0000
Modify: 2016-11-17 10:44:36.225653653+0000
Change: 2016-11-17 10:44:36.225653653+0000

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
7 years agoMerge tag 'pm-turbostat-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 3 Mar 2017 01:41:27 +0000 (17:41 -0800)]
Merge tag 'pm-turbostat-4.11-rc1' of git://git./linux/kernel/git/rafael/linux-pm

Pull turbostat utility updates from Rafael Wysocki:
 "Power management turbostat utility updates.

  These update turbostat significantly and in particular:

   - default output is now verbose, --debug is no longer required to get
     all counters. As a result, some options have been added to specify
     exactly what output is wanted.

   - added --quiet to skip system configuration output

   - added --list, --show and --hide parameters

   - added --cpu parameter

   - enhanced Baytrail SoC support

   - added Gemini Lake SoC support

   - added sysfs C-state columns

  Also the symbol definitions in arch/x86/include/asm/intel-family.h and
  arch/x86/include/asm/msr-index.h are updated and the intel_idle and
  intel_pstate drivers are modified to use the updated symbols.

  Credits to Len Brown for all of these changes"

* tag 'pm-turbostat-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (44 commits)
  tools/power turbostat: version 17.02.24
  tools/power turbostat: bugfix: --add u32 was printed as u64
  tools/power turbostat: show error on exec
  tools/power turbostat: dump p-state software config
  tools/power turbostat: show package number, even without --debug
  tools/power turbostat: support "--hide C1" etc.
  tools/power turbostat: move --Package and --processor into the --cpu option
  tools/power turbostat: turbostat.8 update
  tools/power turbostat: update --list feature
  tools/power turbostat: use wide columns to display large numbers
  tools/power turbostat: Add --list option to show available header names
  tools/power turbostat: fix zero IRQ count shown in one-shot command mode
  tools/power turbostat: add --cpu parameter
  tools/power turbostat: print sysfs C-state stats
  tools/power turbostat: extend --add option to accept /sys path
  tools/power turbostat: skip unused counters on BDX
  tools/power turbostat: fix decoding for GLM, DNV, SKX turbo-ratio limits
  tools/power turbostat: skip unused counters on SKX
  tools/power turbostat: Denverton: use HW CC1 counter, skip C3, C7
  tools/power turbostat: initial Gemini Lake SOC support
  ...

7 years agoMerge tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 3 Mar 2017 01:38:30 +0000 (17:38 -0800)]
Merge tag 'acpi-extra-4.11-rc1' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "This fixes an apparent, but actually artificial, resource conflict
  between the ACPI NVS memory region and the ACPI BERT (Boot Error
  Record Table) address range (Huang Ying)"

* tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: APEI: Fix BERT resources conflict with ACPI NVS area

7 years agoMerge tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 3 Mar 2017 01:33:52 +0000 (17:33 -0800)]
Merge tag 'pm-extra-4.11-rc1' of git://git./linux/kernel/git/rafael/linux-pm

Pull more power management updates deom Rafael Wysocki:
 "These fix two bugs introduced by recent power management updates (in
  the cpuidle menu governor and intel_pstate) and a few other issues,
  clean up things and remove unused code.

  Specifics:

   - Fix for a cpuidle menu governor problem that started to take an
     unnecessary spinlock after one of the recent updates and that did
     not play well with the RT patch (Rafael Wysocki).

   - Fix for the new intel_pstate operation mode switching feature added
     recently that did not reinitialize P-state limits properly when
     switching operation modes (Rafael Wysocki).

   - Removal of unused global notifiers from the PM QoS framework
     (Viresh Kumar).

   - Generic power domains framework update to make it handle
     asynchronous invocations of PM callbacks in the "noirq" phases of
     system suspend/hibernation correctly (Ulf Hansson).

   - Two hibernation core cleanups (Rafael Wysocki).

   - intel_idle cleanup related to the sysfs interface (Len Brown).

   - Off-by-one bug fix in the OPP (Operating Performance Points)
     framework (Andrzej Hajda).

   - OPP framework's documentation fix (Viresh Kumar).

   - cpufreq qoriq driver cleanup (Tang Yuantian).

   - Fixes for typos in comments in the device runtime PM framework
     (Christophe Jaillet)"

* tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / OPP: Documentation: Fix opp-microvolt in examples
  intel_idle: stop exposing platform acronyms in sysfs
  cpufreq: intel_pstate: Fix limits issue with operation mode switching
  PM / hibernate: Define pr_fmt() and use pr_*() instead of printk()
  PM / hibernate: Untangle power_down()
  cpuidle: menu: Avoid taking spinlock for accessing QoS values
  PM / QoS: Remove global notifiers
  PM / runtime: Fix some typos
  cpufreq: qoriq: clean up unused code
  PM / OPP: fix off-by-one bug in dev_pm_opp_get_max_volt_latency loop
  PM / Domains: Power off masters immediately in the power off sequence
  PM / Domains: Rename is_async to one_dev_on for genpd_power_off()
  PM / Domains: Move genpd_power_off() above genpd_power_on()

7 years agoixgbe: update the rss key on h/w, when ethtool ask for it
Paolo Abeni [Thu, 15 Dec 2016 14:20:34 +0000 (15:20 +0100)]
ixgbe: update the rss key on h/w, when ethtool ask for it

Currently ixgbe_set_rxfh() updates the rss_key copy in the driver
memory, but does not push the new value into the h/w. This commit
add a new helper for the latter operation and call it in
ixgbe_set_rxfh(), so that the h/w rss key value can be really
updated via ethtool.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
7 years agosched/headers: Clean up <linux/sched.h>
Ingo Molnar [Mon, 6 Feb 2017 21:06:35 +0000 (22:06 +0100)]
sched/headers: Clean up <linux/sched.h>

Now that <linux/sched.h> dependencies have been sorted out,
do various trivial cleanups:

 - remove unnecessary structure predeclarations
 - fix various typos
 - update comments where necessary
 - remove pointless comments
 - use consistent types
 - tabulate consistently
 - use a consistent comment style
 - clean up the header section a bit
 - use a consistent style of a single field per line
 - remove line-breaks where they make the code look worse
 - etc ...

No change in functionality.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agosched/headers: Remove #ifdefs from <linux/sched.h>
Ingo Molnar [Mon, 6 Feb 2017 10:44:12 +0000 (11:44 +0100)]
sched/headers: Remove #ifdefs from <linux/sched.h>

We can remove two pairs of #ifdefs by defining structures in a smarter way.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agosched/headers: Remove the <linux/topology.h> include from <linux/sched.h>
Ingo Molnar [Mon, 6 Feb 2017 09:01:09 +0000 (10:01 +0100)]
sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>

It's used only by a single (rarely used) inline function (task_node(p)),
which we can move to <linux/sched/topology.h>.

( Add <linux/nodemask.h>, because we rely on that. )

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agosched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>
Ingo Molnar [Mon, 6 Feb 2017 08:59:47 +0000 (09:59 +0100)]
sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h>

In our quest to simplify <linux/sched.h>'s header dependencies, remove
the <linux/wait.h> inclusion from <linux/hrtimer.h> - which does
not appear to be necessary, as hrtimer.h does not use waitqueues.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>