1. 25 Sep, 2017 5 commits
    • Akemi Yagi's avatar
      perf tools: Fix syscalltbl build failure · 090657c9
      Akemi Yagi authored
      The build of kernel v4.14-rc1 for i686 fails on RHEL 6 with the error
      in tools/perf:
      
        util/syscalltbl.c:157: error: expected ';', ',' or ')' before '__maybe_unused'
        mv: cannot stat `util/.syscalltbl.o.tmp': No such file or directory
      
      Fix it by placing/moving:
      
        #include <linux/compiler.h>
      
        outside of #ifdef HAVE_SYSCALL_TABLE block.
      Signed-off-by: default avatarAkemi Yagi <toracat@elrepo.org>
      Cc: Alan Bartlett <ajb@elrepo.org>
      Link: http://lkml.kernel.org/r/oq41r8$1v9$1@blaine.gmane.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      090657c9
    • Mengting Zhang's avatar
      perf report: Fix debug messages with --call-graph option · 9789e7e9
      Mengting Zhang authored
      With --call-graph option, perf report can display call chains using
      type, min percent threshold, optional print limit and order. And the
      default call-graph parameter is 'graph,0.5,caller,function,percent'.
      
      Before this patch, 'perf report --call-graph' shows incorrect debug
      messages as below:
      
        # perf report --call-graph
        Invalid callchain mode: 0.5
        Invalid callchain order: 0.5
        Invalid callchain sort key: 0.5
        Invalid callchain config key: 0.5
        Invalid callchain mode: caller
        Invalid callchain mode: function
        Invalid callchain order: function
        Invalid callchain mode: percent
        Invalid callchain order: percent
        Invalid callchain sort key: percent
      
      That is because in function __parse_callchain_report_opt(),each field of
      the call-graph parameter is passed to parse_callchain_{mode,order,
      sort_key,value} in turn until it meets the matching value.
      
      For example, the order field "caller" is passed to
      parse_callchain_mode() firstly and obviously it doesn't match any mode
      field. Therefore parse_callchain_mode() will shows the debug message
      "Invalid callchain mode: caller", which could confuse users.
      
      The patch fixes this issue by moving the warning out of the function
      parse_callchain_{mode,order,sort_key,value}.
      Signed-off-by: default avatarMengting Zhang <zhangmengting@huawei.com>
      Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
      Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Krister Johansen <kjlx@templeofstupid.com>
      Cc: Li Bin <huawei.libin@huawei.com>
      Cc: Milian Wolff <milian.wolff@kdab.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: Yao Jin <yao.jin@linux.intel.com>
      Link: http://lkml.kernel.org/r/1506154694-39691-1-git-send-email-zhangmengting@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      9789e7e9
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Fix attr.exclude_kernel setting for default cycles:p · f1e52f14
      Arnaldo Carvalho de Melo authored
      Yet another fix for probing the max attr.precise_ip setting: it is not
      enough settting attr.exclude_kernel for !root users, as they _can_
      profile the kernel if the kernel.perf_event_paranoid sysctl is set to
      -1, so check that as well.
      
      Testing it:
      
      As non root:
      
        $ sysctl kernel.perf_event_paranoid
        kernel.perf_event_paranoid = 2
        $ perf record sleep 1
        $ perf evlist -v
        cycles:uppp: ..., exclude_kernel: 1, ... precise_ip: 3, ...
      
      Now as non-root, but with kernel.perf_event_paranoid set set to the
      most permissive value, -1:
      
        $ sysctl kernel.perf_event_paranoid
        kernel.perf_event_paranoid = -1
        $ perf record sleep 1
        $ perf evlist -v
        cycles:ppp: ..., exclude_kernel: 0, ... precise_ip: 3, ...
        $
      
      I.e. non-root, default kernel.perf_event_paranoid: :uppp modifier = not allowed to sample the kernel,
           non-root, most permissible kernel.perf_event_paranoid: :ppp = allowed to sample the kernel.
      
      In both cases, use the highest available precision: attr.precise_ip = 3.
      Reported-and-Tested-by: default avatarIngo Molnar <mingo@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Wang Nan <wangnan0@huawei.com>
      Fixes: d37a3697 ("perf evsel: Fix attr.exclude_kernel setting for default cycles:p")
      Link: http://lkml.kernel.org/n/tip-nj2qkf75xsd6pw6hhjzfqqdx@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f1e52f14
    • Ingo Molnar's avatar
      tools include: Sync kernel ABI headers with tooling headers · 549a3976
      Ingo Molnar authored
      Time for a sync with ABI/uapi headers with the upcoming v4.14 kernel.
      
      None of the ABI changes require any source code level changes to our
      existing in-kernel tooling code:
      
        - tools/arch/s390/include/uapi/asm/kvm.h:
      
            New KVM_S390_VM_TOD_EXT ABI, not used by in-kernel tooling.
      
        - tools/arch/x86/include/asm/cpufeatures.h:
          tools/arch/x86/include/asm/disabled-features.h:
      
            New PCID, SME and VGIF x86 CPU feature bits defined.
      
        - tools/include/asm-generic/hugetlb_encode.h:
          tools/include/uapi/asm-generic/mman-common.h:
          tools/include/uapi/linux/mman.h:
      
            Two new madvise() flags, plus a hugetlb system call mmap flags
            restructuring/extension changes.
      
        - tools/include/uapi/drm/drm.h:
          tools/include/uapi/drm/i915_drm.h:
      
            New drm_syncobj_create flags definitions, new drm_syncobj_wait
            and drm_syncobj_array ABIs. DRM_I915_PERF_* calls and a new
            I915_PARAM_HAS_EXEC_FENCE_ARRAY ABI for the Intel driver.
      
        - tools/include/uapi/linux/bpf.h:
      
            New bpf_sock fields (::mark and ::priority), new XDP_REDIRECT
            action, new kvm_ppc_smmu_info fields (::data_keys, instr_keys)
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Milian Wolff <milian.wolff@kdab.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Taeung Song <treeze.taeung@gmail.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Cc: Yao Jin <yao.jin@linux.intel.com>
      Link: http://lkml.kernel.org/r/20170913073823.lxmi4c7ejqlfabjx@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      549a3976
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Get all of tools/{arch,include}/ in the MANIFEST · 89975bd3
      Arnaldo Carvalho de Melo authored
      Now that I'm switching the container builds from using a local volume
      pointing to the kernel repository with the perf sources, instead getting
      a detached tarball to be able to use a container cluster, some places
      broke because I forgot to put some of the required files in
      tools/perf/MANIFEST, namely some bitsperlong.h files.
      
      So, to fix it do the same as for tools/build/ and pack the whole
      tools/arch/ directory.
      
      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-wmenpjfjsobwdnfde30qqncj@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      89975bd3
  2. 13 Sep, 2017 4 commits
    • Ingo Molnar's avatar
      Merge tag 'perf-urgent-for-mingo-4.14-20170912' of... · b130a699
      Ingo Molnar authored
      Merge tag 'perf-urgent-for-mingo-4.14-20170912' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
      
      Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
      
      - Fix TUI progress bar when delta from new total from that of the
        previous update is greater than the progress "step" (screen width
        progress bar block))  (Jiri Olsa)
      
      - Make tools/lib/api make DEBUG=1 build use -D_FORTIFY_SOURCE=2 not
        to cripple debuginfo, just like tools/perf/ does (Jiri Olsa)
      
      - Avoid leaking the 'perf.data' file to workloads started from the
        'perf record' command line by using the O_CLOEXEC open flag (Jiri Olsa)
      
      - Fix building when libunwind's 'unwind.h' file is present in the
        include path, clashing with tools/perf/util/unwind.h (Milian Wolff)
      
      - Check per .perfconfig section entry flag, not just per section (Taeung Song)
      
      - Support running perf binaries with a dash in their name, needed to
        run perf as an AppImage (Milian Wolff)
      
      - Wait for the right child by using waitpid() when running workloads
        from 'perf stat', also to fix using perf as an AppImage (Milian Wolff)
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      b130a699
    • Linus Torvalds's avatar
      Merge tag 'f2fs-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs · 6d8ef53e
      Linus Torvalds authored
      Pull f2fs updates from Jaegeuk Kim:
       "In this round, we've mostly tuned f2fs to provide better user
        experience for Android. Especially, we've worked on atomic write
        feature again with SQLite community in order to support it officially.
        And we added or modified several facilities to analyze and enhance IO
        behaviors.
      
        Major changes include:
         - add app/fs io stat
         - add inode checksum feature
         - support project/journalled quota
         - enhance atomic write with new ioctl() which exposes feature set
         - enhance background gc/discard/fstrim flows with new gc_urgent mode
         - add F2FS_IOC_FS{GET,SET}XATTR
         - fix some quota flows"
      
      * tag 'f2fs-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (63 commits)
        f2fs: hurry up to issue discard after io interruption
        f2fs: fix to show correct discard_granularity in sysfs
        f2fs: detect dirty inode in evict_inode
        f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared
        f2fs: speed up gc_urgent mode with SSR
        f2fs: better to wait for fstrim completion
        f2fs: avoid race in between read xattr & write xattr
        f2fs: make get_lock_data_page to handle encrypted inode
        f2fs: use generic terms used for encrypted block management
        f2fs: introduce f2fs_encrypted_file for clean-up
        Revert "f2fs: add a new function get_ssr_cost"
        f2fs: constify super_operations
        f2fs: fix to wake up all sleeping flusher
        f2fs: avoid race in between atomic_read & atomic_inc
        f2fs: remove unneeded parameter of change_curseg
        f2fs: update i_flags correctly
        f2fs: don't check inode's checksum if it was dirtied or writebacked
        f2fs: don't need to update inode checksum for recovery
        f2fs: trigger fdatasync for non-atomic_write file
        f2fs: fix to avoid race in between aio and gc
        ...
      6d8ef53e
    • Linus Torvalds's avatar
      Merge tag 'ceph-for-4.14-rc1' of git://github.com/ceph/ceph-client · cdb897e3
      Linus Torvalds authored
      Pull ceph updates from Ilya Dryomov:
       "The highlights include:
      
         - a large series of fixes and improvements to the snapshot-handling
           code (Zheng Yan)
      
         - individual read/write OSD requests passed down to libceph are now
           limited to 16M in size to avoid hitting OSD-side limits (Zheng Yan)
      
         - encode MStatfs v2 message to allow for more accurate space usage
           reporting (Douglas Fuller)
      
         - switch to the new writeback error tracking infrastructure (Jeff
           Layton)"
      
      * tag 'ceph-for-4.14-rc1' of git://github.com/ceph/ceph-client: (35 commits)
        ceph: stop on-going cached readdir if mds revokes FILE_SHARED cap
        ceph: wait on writeback after writing snapshot data
        ceph: fix capsnap dirty pages accounting
        ceph: ignore wbc->range_{start,end} when write back snapshot data
        ceph: fix "range cyclic" mode writepages
        ceph: cleanup local variables in ceph_writepages_start()
        ceph: optimize pagevec iterating in ceph_writepages_start()
        ceph: make writepage_nounlock() invalidate page that beyonds EOF
        ceph: properly get capsnap's size in get_oldest_context()
        ceph: remove stale check in ceph_invalidatepage()
        ceph: queue cap snap only when snap realm's context changes
        ceph: handle race between vmtruncate and queuing cap snap
        ceph: fix message order check in handle_cap_export()
        ceph: fix NULL pointer dereference in ceph_flush_snaps()
        ceph: adjust 36 checks for NULL pointers
        ceph: delete an unnecessary return statement in update_dentry_lease()
        ceph: ENOMEM pr_err in __get_or_create_frag() is redundant
        ceph: check negative offsets in ceph_llseek()
        ceph: more accurate statfs
        ceph: properly set snap follows for cap reconnect
        ...
      cdb897e3
    • Richard Wareing's avatar
      xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present · b31ff3cd
      Richard Wareing authored
      If using a kernel with CONFIG_XFS_RT=y and we set the RHINHERIT flag on
      a directory in a filesystem that does not have a realtime device and
      create a new file in that directory, it gets marked as a real time file.
      When data is written and a fsync is issued, the filesystem attempts to
      flush a non-existent rt device during the fsync process.
      
      This results in a crash dereferencing a null buftarg pointer in
      xfs_blkdev_issue_flush():
      
        BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
        IP: xfs_blkdev_issue_flush+0xd/0x20
        .....
        Call Trace:
          xfs_file_fsync+0x188/0x1c0
          vfs_fsync_range+0x3b/0xa0
          do_fsync+0x3d/0x70
          SyS_fsync+0x10/0x20
          do_syscall_64+0x4d/0xb0
          entry_SYSCALL64_slow_path+0x25/0x25
      
      Setting RT inode flags does not require special privileges so any
      unprivileged user can cause this oops to occur.  To reproduce, confirm
      kernel is compiled with CONFIG_XFS_RT=y and run:
      
        # mkfs.xfs -f /dev/pmem0
        # mount /dev/pmem0 /mnt/test
        # mkdir /mnt/test/foo
        # xfs_io -c 'chattr +t' /mnt/test/foo
        # xfs_io -f -c 'pwrite 0 5m' -c fsync /mnt/test/foo/bar
      
      Or just run xfstests with MKFS_OPTIONS="-d rtinherit=1" and wait.
      
      Kernels built with CONFIG_XFS_RT=n are not exposed to this bug.
      
      Fixes: f538d4da ("[XFS] write barrier support")
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarRichard Wareing <rwareing@fb.com>
      Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b31ff3cd
  3. 12 Sep, 2017 27 commits
    • Linus Torvalds's avatar
      Merge tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping · 52269718
      Linus Torvalds authored
      Pull dma-mapping updates from Christoph Hellwig:
      
       - removal of the old dma_alloc_noncoherent interface
      
       - remove unused flags to dma_declare_coherent_memory
      
       - restrict OF DMA configuration to specific physical busses
      
       - use the iommu mailing list for dma-mapping questions and patches
      
      * tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping:
        dma-coherent: fix dma_declare_coherent_memory() logic error
        ARM: imx: mx31moboard: Remove unused 'dma' variable
        dma-coherent: remove an unused variable
        MAINTAINERS: use the iommu list for the dma-mapping subsystem
        dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
        dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag
        of: restrict DMA configuration
        dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent
        i825xx: switch to switch to dma_alloc_attrs
        au1000_eth: switch to dma_alloc_attrs
        sgiseeq: switch to dma_alloc_attrs
        dma-mapping: reduce dma_mapping_error inline bloat
      52269718
    • Linus Torvalds's avatar
      Merge tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid · ae71948f
      Linus Torvalds authored
      Pull uuid updates from Christoph Hellwig:
       "Just a single conversion to the new UUID API for this merge window"
      
      * tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid:
        efi: switch to use new generic UUID API
      ae71948f
    • Linus Torvalds's avatar
      Merge tag 'selinux-pr-20170831' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux · 7f85565a
      Linus Torvalds authored
      Pull selinux updates from Paul Moore:
       "A relatively quiet period for SELinux, 11 patches with only two/three
        having any substantive changes.
      
        These noteworthy changes include another tweak to the NNP/nosuid
        handling, per-file labeling for cgroups, and an object class fix for
        AF_UNIX/SOCK_RAW sockets; the rest of the changes are minor tweaks or
        administrative updates (Stephen's email update explains the file
        explosion in the diffstat).
      
        Everything passes the selinux-testsuite"
      
      [ Also a couple of small patches from the security tree from Tetsuo
        Handa for Tomoyo and LSM cleanup. The separation of security policy
        updates wasn't all that clean - Linus ]
      
      * tag 'selinux-pr-20170831' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
        selinux: constify nf_hook_ops
        selinux: allow per-file labeling for cgroupfs
        lsm_audit: update my email address
        selinux: update my email address
        MAINTAINERS: update the NetLabel and Labeled Networking information
        selinux: use GFP_NOWAIT in the AVC kmem_caches
        selinux: Generalize support for NNP/nosuid SELinux domain transitions
        selinux: genheaders should fail if too many permissions are defined
        selinux: update the selinux info in MAINTAINERS
        credits: update Paul Moore's info
        selinux: Assign proper class to PF_UNIX/SOCK_RAW sockets
        tomoyo: Update URLs in Documentation/admin-guide/LSM/tomoyo.rst
        LSM: Remove security_task_create() hook.
      7f85565a
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 680352bd
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
       "Two fixes: dead code removal, plus a SME memory encryption fix on
        32-bit kernels that crashed Xen guests"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/cpu: Remove unused and undefined __generic_processor_info() declaration
        x86/mm: Make the SME mask a u64
      680352bd
    • Linus Torvalds's avatar
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 040b9d7c
      Linus Torvalds authored
      Pull scheduler fixes from Ingo Molnar:
       "Three fixes:
      
         - fix a suspend/resume cpusets bug
      
         - fix a !CONFIG_NUMA_BALANCING bug
      
         - fix a kerneldoc warning"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/fair: Fix nuisance kernel-doc warning
        sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs
        sched/fair: Fix wake_affine_llc() balancing rules
      040b9d7c
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e6328a7a
      Linus Torvalds authored
      Pull perf tooling updates from Ingo Molnar:
       "Perf tooling updates and fixes"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf annotate browser: Help for cycling thru hottest instructions with TAB/shift+TAB
        perf stat: Only auto-merge events that are PMU aliases
        perf test: Add test case for PERF_SAMPLE_PHYS_ADDR
        perf script: Support physical address
        perf mem: Support physical address
        perf sort: Add sort option for physical address
        perf tools: Support new sample type for physical address
        perf vendor events powerpc: Remove duplicate events
        perf intel-pt: Fix syntax in documentation of config option
        perf test powerpc: Fix 'Object code reading' test
        perf trace: Support syscall name globbing
        perf syscalltbl: Support glob matching on syscall names
        perf report: Calculate the average cycles of iterations
      e6328a7a
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 33f82bda
      Linus Torvalds authored
      Pull irq fixes from Ingo Molnar:
       "A sparse irq race/locking fix, and a MSI irq domains population fix"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Make sparse_irq_lock protect what it should protect
        genirq/msi: Fix populating multiple interrupts
      33f82bda
    • Chao Yu's avatar
      f2fs: hurry up to issue discard after io interruption · e6c6de18
      Chao Yu authored
      Once we encounter I/O interruption during issuing discards, we will delay
      long time before next round, but if system status is I/O idle during the
      time, it may loses opportunity to issue discards. So this patch changes
      to hurry up to issue discard after io interruption.
      
      Besides, this patch also fixes to issue discards accurately with assigned
      rate.
      Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      e6c6de18
    • Chao Yu's avatar
      f2fs: fix to show correct discard_granularity in sysfs · 80647e5f
      Chao Yu authored
      Fix below incorrect display when reading discard_granularity sysfs node.
      
      $ cat /sys/fs/f2fs/<device>/discard_granularity
      $ 16
      $ echo 32 > /sys/fs/f2fs/<device>/discard_granularity
      $ cat /sys/fs/f2fs/<device>/discard_granularity
      $ 16
      Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      80647e5f
    • Chao Yu's avatar
      f2fs: detect dirty inode in evict_inode · ca7d802a
      Chao Yu authored
      Add a bugon in f2fs_evict_inode to detect inconsistent status between
      inode cache and related node page cache.
      Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      ca7d802a
    • Milian Wolff's avatar
      perf stat: Wait for the correct child · dfc9eec7
      Milian Wolff authored
      When packaging the perf userland application into an AppImage, the
      wait() call in perf stat returned too early. It turned out that some
      other child process exited, but not the one perf stat launched:
      
        $ sudo strace -e fork,execve,clone,wait4 -f ./perf-x86_64.AppImage stat sleep 1
        execve("./perf-git.3a73b7f9-x86_64.AppImage", ["./perf-git.3a73b7f9-x86_64.AppIm"..., "stat", "sleep", "1"], 0x7ffec1bbf050 /* 18 vars */) = 0
        clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f6a6e7efe50) = 3912
        strace: Process 3912 attached
        [pid  3912] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f6a6e7efe50) = 3914
        strace: Process 3914 attached
        [pid  3912] +++ exited with 0 +++
        [pid  3911] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
        [pid  3914] clone(strace: Process 3915 attached
        child_stack=0x7f6a6d9fefb0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f6a6d9ff9d0, tls=0x7f6a6d9ff700, child_tidptr=0x7f6a6d9ff9d0) = 3915
        [pid  3911] execve("/tmp/.mount_perf-g6VYMpl/AppRun", ["./perf-git.3a73b7f9-x86_64.AppIm"..., "stat", "sleep", "1"], 0x14aab70 /* 21 vars */) = 0
        [pid  3911] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f4ae113c4d0) = 3916
        strace: Process 3916 attached
        [pid  3911] wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 3912
        [pid  3916] execve("/usr/libexec/perf-core/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/tmp/./sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/home/milian/.bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/usr/lib/icecream/libexec/icecc/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/ssd2/milian/projects/compiled/other/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/home/milian/.bin/kf5/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/ssd2/milian/projects/compiled/kf5/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/home/milian/projects/compiled/other/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/home/milian/projects/compiled/kf5/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/usr/local/sbin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/usr/local/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory)
        [pid  3916] execve("/usr/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */
         Performance counter stats for 'sleep 1':
      
             <not counted>	task-clock
             <not counted>	context-switches
             <not counted>	cpu-migrations
             <not counted>	page-faults
             <not counted>	cycles
             <not counted>	instructions
             <not counted>      branches
             <not counted>      branch-misses
      
               0.000047194 seconds time elapsed
      
        [pid  3916] --- SIGTERM {si_signo=SIGTERM, si_code=SI_USER, si_pid=3911, si_uid=0} ---
        [pid  3916] +++ killed by SIGTERM +++
        [pid  3911] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=3916, si_uid=0, si_status=SIGTERM, si_utime=0, si_stime=0} ---
        [pid  3915] --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=3914, si_uid=0} ---
        [pid  3911] +++ exited with 0 +++
        [pid  3915] --- SIGHUP {si_signo=SIGHUP, si_code=SI_USER, si_pid=3914, si_uid=0} ---
        [pid  3915] +++ exited with 0 +++
        +++ exited with 0 +++
      
      This patch uses waitpid instead to ensure the call waits for the
      debuggee application launched by 'perf stat'. This fixes 'perf stat'
      when launched from an AppImage:
      
        $ ./perf-x86_64.AppImage stat sleep 1
      
         Performance counter stats for 'sleep 1':
      
                0.357235      task-clock (msec)         #    0.000 CPUs utilized
                       1      context-switches          #    0.003 M/sec
                       0      cpu-migrations            #    0.000 K/sec
                      50      page-faults               #    0.140 M/sec
                 1269602      cycles                    #    3.554 GHz
                  654278      instructions              #    0.52  insn per cycle
                  129963      branches                  #  363.803 M/sec
                    7082      branch-misses             #    5.45% of all branches
      
             1.000633420 seconds time elapsed
      Signed-off-by: default avatarMilian Wolff <milian.wolff@kdab.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20170912152523.4497-1-milian.wolff@kdab.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      dfc9eec7
    • Milian Wolff's avatar
      perf tools: Support running perf binaries with a dash in their name · 3192f1ed
      Milian Wolff authored
      Previously the part behind "perf-" was interpreted as an internal perf
      command. If the suffix could not be handled, the execution was stopped.
      This makes it impossible to launch perf binaries that got renamed to
      have the `perf-` prefix. This is e.g. the case for appimages (e.g.
      "perf-x86_64.AppImage"), but would also apply to all other scenarios
      where users symlink or rename perf themselves:
      
      Status quo with the broken behavior:
      
        $ ln -s ./perf ./perf-custom-suffix
        $ ./perf-custom-suffix list
        cannot handle custom-suffix internally$
      
      Also note the missing newline at the end of the error message.
      
      With this patch applied, the above works properly:
      
        $ ./perf-custom-suffix list
      
        List of pre-defined events (to be used in -e):
        ...
      Signed-off-by: default avatarMilian Wolff <milian.wolff@kdab.com>
      Acked-by: default avatarDavid Ahern <dsahern@gmail.com>
      Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Yao Jin <yao.jin@linux.intel.com>
      Link: http://lkml.kernel.org/r/20170911111422.31903-1-milian.wolff@kdab.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      3192f1ed
    • Taeung Song's avatar
      perf config: Check not only section->from_system_config but also item's · cba225d6
      Taeung Song authored
      Currently section->from_system_config is being checked multiple times.
      item->from_system_config should be checked instead, when iterating thru
      the items in a section. Fix it.
      Signed-off-by: default avatarTaeung Song <treeze.taeung@gmail.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1504754325-9724-1-git-send-email-treeze.taeung@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      cba225d6
    • Jiri Olsa's avatar
      perf ui progress: Fix progress update · a82bfd04
      Jiri Olsa authored
      We currently update the 'next' variable only with a single step value.
      But it's possible the 'adv' update is bigger than single 'step' value.
      This would leave 'next' value under counted and force unnecessary
      ui_progress__ops->update calls.
      
      Calculate the amount of steps we need for 'adv' update and increase the
      'next' with that amounts of steps.
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20170908120510.22515-3-jolsa@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a82bfd04
    • Jiri Olsa's avatar
      perf ui progress: Make sure we always define step value · 4d286c89
      Jiri Olsa authored
      Unlikely, but we could have ui_progress__init being called with total <
      16, which would set the next and step variables to 0. That would force
      unnecessary ui_progress__ops->update calls because 'next' would never
      raise.
      
      Forcing the next and step values to be always > 0.
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20170908120510.22515-2-jolsa@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4d286c89
    • Jiri Olsa's avatar
      perf tools: Open perf.data with O_CLOEXEC flag · cd6379eb
      Jiri Olsa authored
      Do not carry the perf.data file descriptor into the workload process and
      close it when perf executes the workload.
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20170908084621.31595-2-jolsa@kernel.org
      [ Add definitions for O_CLOEXEC for older systems ]
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      cd6379eb
    • Jiri Olsa's avatar
      tools lib api: Fix make DEBUG=1 build · 58b79186
      Jiri Olsa authored
      Do not use -D_FORTIFY_SOURCE=2 for DEBUG build as it seems to mess up
      with debuginfo, which results in bad gdb experience.
      
      We already do that for tools/perf/.
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20170908084621.31595-1-jolsa@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      58b79186
    • Milian Wolff's avatar
      perf tests: Fix compile when libunwind's unwind.h is available · df90cc41
      Milian Wolff authored
      When cross compiling perf and I want to link against a self-compiled
      libunwind, I usually make the custom path where the libunwind headers
      exist visible by adding the libunwind prefix to the include path when
      compiling perf, i.e.:
      
      ~~~~~
      $ ls $HOME/projects/compiled/other/include/
      libunwind-coredump.h  libunwind.h         libunwind-x86_64.h
      libunwind-common.h  libunwind-dynamic.h   libunwind-ptrace.h
      unwind.h
      $ make EXTRA_CFLAGS="-I$HOME/projects/compiled/other/include/
      ~~~~~~
      
      Note the `unwind.h` header from libunwind which leads to compile
      errors when compiling tests/dwarf-unwind.c, since it shadows perf's
      util/unwind.h:
      
      ~~~~~
      tests/dwarf-unwind.c:41:32: error: ‘struct unwind_entry’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
       static int unwind_entry(struct unwind_entry *entry, void *arg)
                                      ^~~~~~~~~~~~
      tests/dwarf-unwind.c: In function ‘unwind_entry’:
      tests/dwarf-unwind.c:44:22: error: dereferencing pointer to incomplete type ‘struct unwind_entry’
        char *symbol = entry->sym ? entry->sym->name : NULL;
                            ^~
      tests/dwarf-unwind.c: In function ‘unwind_thread’:
      tests/dwarf-unwind.c:92:8: error: implicit declaration of function ‘unwind__get_entries’; did you mean ‘unwind_entry’? [-Werror=implicit-function-declaration]
        err = unwind__get_entries(unwind_entry, &cnt, thread,
              ^~~~~~~~~~~~~~~~~~~
              unwind_entry
      tests/dwarf-unwind.c:92:8: error: nested extern declaration of ‘unwind__get_entries’ [-Werror=nested-externs]
      ~~~~~~
      
      Fix this compile error by specificing an explicit include of perf's
      unwind.h in the util folder.
      Signed-off-by: default avatarMilian Wolff <milian.wolff@kdab.com>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Yao Jin <yao.jin@linux.intel.com>
      Link: http://lkml.kernel.org/r/20170906150209.12579-1-milian.wolff@kdab.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      df90cc41
    • Arnaldo Carvalho de Melo's avatar
      tools include linux: Guard against redefinition of some macros · 259d4077
      Arnaldo Carvalho de Melo authored
      When cross building to android r15c (and older versions) on Fedora 26
      we notice these:
      
      /opt/android-ndk-r15c/platforms/android-24/arch-arm/usr/include/sys/cdefs.h:332:0: note: this is the location of the previous definition
      
      For __aligned, __packed and __noreturn, so guard those with ifdefs to
      avoid drowning useful warnings in these.
      
      Cc: Adrian Hunter <adrian.hunter@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-d7w3fa9c22dtmrwbedos6ie1@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      259d4077
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm · 8fac2f96
      Linus Torvalds authored
      Pull ARM updates from Russell King:
       "Low priority fixes and updates for ARM:
      
         - add some missing includes
      
         - efficiency improvements in system call entry code when tracing is
           enabled
      
         - ensure ARMv6+ is always built as EABI
      
         - export save_stack_trace_tsk()
      
         - fix fatal signal handling during mm fault
      
         - build translation table base address register from scratch
      
         - appropriately align the .data section to a word boundary where we
           rely on that data being word aligned"
      
      * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: 8691/1: Export save_stack_trace_tsk()
        ARM: 8692/1: mm: abort uaccess retries upon fatal signal
        ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup
        ARM: align .data section
        ARM: always enable AEABI for ARMv6+
        ARM: avoid saving and restoring registers unnecessarily
        ARM: move PC value into r9
        ARM: obtain thread info structure later
        ARM: use aliases for registers in entry-common
        ARM: 8689/1: scu: add missing errno include
        ARM: 8688/1: pm: add missing types include
      8fac2f96
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 260d1658
      Linus Torvalds authored
      Pull more s390 updates from Martin Schwidefsky:
       "The second patch set for the 4.14 merge window:
      
         - Convert the dasd device driver to the blk-mq interface.
      
         - Provide three zcrypt interfaces for vfio_ap. These will be required
           for KVM guest access to the crypto cards attached via the AP bus.
      
         - A couple of memory management bug fixes."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/dasd: blk-mq conversion
        s390/mm: use a single lock for the fields in mm_context_t
        s390/mm: fix race on mm->context.flush_mm
        s390/mm: fix local TLB flushing vs. detach of an mm address space
        s390/zcrypt: externalize AP queue interrupt control
        s390/zcrypt: externalize AP config info query
        s390/zcrypt: externalize test AP queue
        s390/mm: use VM_BUG_ON in crst_table_[upgrade|downgrade]
      260d1658
    • Linus Torvalds's avatar
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux · c971aa36
      Linus Torvalds authored
      Pull thermal updates from Zhang Rui:
      
       - fix resources release in error paths when registering thermal zone.
         (Christophe Jaillet)
      
       - introduce a new thermal driver for on-chip PVT (Process, Voltage and
         Temperature) monitoring unit implemented on UniPhier SoCs. This
         driver supports temperature monitoring and alert function. (Kunihiko
         Hayashi)
      
       - Add support for mt2712 chip in the mtk_thermal driver. (Louis Yu)
      
       - Add support for RK3328 SOC in rockchip_thermal driver. (Rocky Hao)
      
       - cleanup a couple of platform thermal drivers to constify
         thermal_zone_of_device_ops structures. (Julia Lawall)
      
       - a couple of fixes in int340x and intel_pch_thermal thermal driver.
         (Arvind Yadav, Sumeet Pawnikar, Brian Bian, Ed Swierk, Zhang Rui)
      
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (27 commits)
        Thermal: int3406_thermal: fix thermal sysfs I/F
        thermal: mediatek: minor mtk_thermal.c cleanups
        thermal: mediatek: extend calibration data for mt2712 chip
        thermal: mediatek: add Mediatek thermal driver for mt2712
        dt-bindings: thermal: Add binding document for Mediatek thermal controller
        thermal: intel_pch_thermal: Fix enable check on Broadwell-DE
        thermal: rockchip: Support the RK3328 SOC in thermal driver
        dt-bindings: rockchip-thermal: Support the RK3328 SoC compatible
        thermal: bcm2835: constify thermal_zone_of_device_ops structures
        thermal: exynos: constify thermal_zone_of_device_ops structures
        thermal: zx2967: constify thermal_zone_of_device_ops structures
        thermal: rcar_gen3_thermal: constify thermal_zone_of_device_ops structures
        thermal: qoriq: constify thermal_zone_of_device_ops structures
        thermal: hisilicon: constify thermal_zone_of_device_ops structures
        thermal: core: Fix resources release in error paths in thermal_zone_device_register()
        thermal: core: Use the new 'thermal_zone_destroy_device_groups()' helper function
        thermal: core: Add some new helper functions to free resources
        thermal: int3400_thermal: process "thermal table changed" event
        thermal: uniphier: add UniPhier thermal driver
        dt-bindings: thermal: add binding documentation for UniPhier thermal monitor
        ...
      c971aa36
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 8e7757d8
      Linus Torvalds authored
      Pull NFS client updates from Trond Myklebust:
       "Hightlights include:
      
        Stable bugfixes:
         - Fix mirror allocation in the writeback code to avoid a use after
           free
         - Fix the O_DSYNC writes to use the correct byte range
         - Fix 2 use after free issues in the I/O code
      
        Features:
         - Writeback fixes to split up the inode->i_lock in order to reduce
           contention
         - RPC client receive fixes to reduce the amount of time the
           xprt->transport_lock is held when receiving data from a socket into
           am XDR buffer.
         - Ditto fixes to reduce contention between call side users of the
           rdma rb_lock, and its use in rpcrdma_reply_handler.
         - Re-arrange rdma stats to reduce false cacheline sharing.
         - Various rdma cleanups and optimisations.
         - Refactor the NFSv4.1 exchange id code and clean up the code.
         - Const-ify all instances of struct rpc_xprt_ops
      
        Bugfixes:
         - Fix the NFSv2 'sec=' mount option.
         - NFSv4.1: don't use machine credentials for CLOSE when using
           'sec=sys'
         - Fix the NFSv3 GRANT callback when the port changes on the server.
         - Fix livelock issues with COMMIT
         - NFSv4: Use correct inode in _nfs4_opendata_to_nfs4_state() when
           doing and NFSv4.1 open by filehandle"
      
      * tag 'nfs-for-4.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (69 commits)
        NFS: Count the bytes of skipped subrequests in nfs_lock_and_join_requests()
        NFS: Don't hold the group lock when calling nfs_release_request()
        NFS: Remove pnfs_generic_transfer_commit_list()
        NFS: nfs_lock_and_join_requests and nfs_scan_commit_list can deadlock
        NFS: Fix 2 use after free issues in the I/O code
        NFS: Sync the correct byte range during synchronous writes
        lockd: Delete an error message for a failed memory allocation in reclaimer()
        NFS: remove jiffies field from access cache
        NFS: flush data when locking a file to ensure cache coherence for mmap.
        SUNRPC: remove some dead code.
        NFS: don't expect errors from mempool_alloc().
        xprtrdma: Use xprt_pin_rqst in rpcrdma_reply_handler
        xprtrdma: Re-arrange struct rx_stats
        NFS: Fix NFSv2 security settings
        NFSv4.1: don't use machine credentials for CLOSE when using 'sec=sys'
        SUNRPC: ECONNREFUSED should cause a rebind.
        NFS: Remove unused parameter gfp_flags from nfs_pageio_init()
        NFSv4: Fix up mirror allocation
        SUNRPC: Add a separate spinlock to protect the RPC request receive list
        SUNRPC: Cleanup xs_tcp_read_common()
        ...
      8e7757d8
    • Daeho Jeong's avatar
      f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared · 0abd8e70
      Daeho Jeong authored
      On a senario like writing out the first dirty page of the inode
      as the inline data, we only cleared dirty flags of the pages, but
      didn't clear the dirty tags of those pages in the radix tree.
      
      If we don't clear the dirty tags of the pages in the radix tree, the
      inodes which contain the pages will be marked with I_DIRTY_PAGES again
      and again, and writepages() for the inodes will be invoked in every
      writeback period. As a result, nothing will be done in every
      writepages() for the inodes and it will just consume CPU time
      meaninglessly.
      Signed-off-by: default avatarDaeho Jeong <daeho.jeong@samsung.com>
      Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      0abd8e70
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace · dd198ce7
      Linus Torvalds authored
      Pull namespace updates from Eric Biederman:
       "Life has been busy and I have not gotten half as much done this round
        as I would have liked. I delayed it so that a minor conflict
        resolution with the mips tree could spend a little time in linux-next
        before I sent this pull request.
      
        This includes two long delayed user namespace changes from Kirill
        Tkhai. It also includes a very useful change from Serge Hallyn that
        allows the security capability attribute to be used inside of user
        namespaces. The practical effect of this is people can now untar
        tarballs and install rpms in user namespaces. It had been suggested to
        generalize this and encode some of the namespace information
        information in the xattr name. Upon close inspection that makes the
        things that should be hard easy and the things that should be easy
        more expensive.
      
        Then there is my bugfix/cleanup for signal injection that removes the
        magic encoding of the siginfo union member from the kernel internal
        si_code. The mips folks reported the case where I had used FPE_FIXME
        me is impossible so I have remove FPE_FIXME from mips, while at the
        same time including a return statement in that case to keep gcc from
        complaining about unitialized variables.
      
        I almost finished the work to get make copy_siginfo_to_user a trivial
        copy to user. The code is available at:
      
           git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git neuter-copy_siginfo_to_user-v3
      
        But I did not have time/energy to get the code posted and reviewed
        before the merge window opened.
      
        I was able to see that the security excuse for just copying fields
        that we know are initialized doesn't work in practice there are buggy
        initializations that don't initialize the proper fields in siginfo. So
        we still sometimes copy unitialized data to userspace"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
        Introduce v3 namespaced file capabilities
        mips/signal: In force_fcr31_sig return in the impossible case
        signal: Remove kernel interal si_code magic
        fcntl: Don't use ambiguous SIG_POLL si_codes
        prctl: Allow local CAP_SYS_ADMIN changing exe_file
        security: Use user_namespace::level to avoid redundant iterations in cap_capable()
        userns,pidns: Verify the userns for new pid namespaces
        signal/testing: Don't look for __SI_FAULT in userspace
        signal/mips: Document a conflict with SI_USER with SIGFPE
        signal/sparc: Document a conflict with SI_USER with SIGFPE
        signal/ia64: Document a conflict with SI_USER with SIGFPE
        signal/alpha: Document a conflict with SI_USER for SIGTRAP
      dd198ce7
    • Jaegeuk Kim's avatar
      f2fs: speed up gc_urgent mode with SSR · b3a97a2a
      Jaegeuk Kim authored
      This patch activates SSR in gc_urgent mode.
      Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      b3a97a2a
    • Jaegeuk Kim's avatar
      f2fs: better to wait for fstrim completion · 1eb1ef4a
      Jaegeuk Kim authored
      In android, we'd better wait for fstrim completion instead of issuing the
      discard commands asynchronous.
      Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
      Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
      1eb1ef4a
  4. 11 Sep, 2017 4 commits
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 89fd915c
      Linus Torvalds authored
      Pull libnvdimm from Dan Williams:
       "A rework of media error handling in the BTT driver and other updates.
        It has appeared in a few -next releases and collected some late-
        breaking build-error and warning fixups as a result.
      
        Summary:
      
         - Media error handling support in the Block Translation Table (BTT)
           driver is reworked to address sleeping-while-atomic locking and
           memory-allocation-context conflicts.
      
         - The dax_device lookup overhead for xfs and ext4 is moved out of the
           iomap hot-path to a mount-time lookup.
      
         - A new 'ecc_unit_size' sysfs attribute is added to advertise the
           read-modify-write boundary property of a persistent memory range.
      
         - Preparatory fix-ups for arm and powerpc pmem support are included
           along with other miscellaneous fixes"
      
      * tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (26 commits)
        libnvdimm, btt: fix format string warnings
        libnvdimm, btt: clean up warning and error messages
        ext4: fix null pointer dereference on sbi
        libnvdimm, nfit: move the check on nd_reserved2 to the endpoint
        dax: fix FS_DAX=n BLOCK=y compilation
        libnvdimm: fix integer overflow static analysis warning
        libnvdimm, nd_blk: remove mmio_flush_range()
        libnvdimm, btt: rework error clearing
        libnvdimm: fix potential deadlock while clearing errors
        libnvdimm, btt: cache sector_size in arena_info
        libnvdimm, btt: ensure that flags were also unchanged during a map_read
        libnvdimm, btt: refactor map entry operations with macros
        libnvdimm, btt: fix a missed NVDIMM_IO_ATOMIC case in the write path
        libnvdimm, nfit: export an 'ecc_unit_size' sysfs attribute
        ext4: perform dax_device lookup at mount
        ext2: perform dax_device lookup at mount
        xfs: perform dax_device lookup at mount
        dax: introduce a fs_dax_get_by_bdev() helper
        libnvdimm, btt: check memory allocation failure
        libnvdimm, label: fix index block size calculation
        ...
      89fd915c
    • Linus Torvalds's avatar
      Merge tag 'pwm/for-4.14-rc1' of... · 66c9457d
      Linus Torvalds authored
      Merge tag 'pwm/for-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
      
      Pull pwm updates from Thierry Reding:
       "The changes for this release include a new driver for the PWM
        controller found on SoCs of the ZTX ZX family. Support for an old
        SH-Mobile SoC has been dropped and the Rockchip and MediaTek drivers
        gain support for more generations.
      
        Other than that there are a bunch of coding style fixes, minor bug
        fixes and cleanup as well as documentation patches"
      
      * tag 'pwm/for-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (32 commits)
        pwm: pwm-samsung: fix suspend/resume support
        pwm: samsung: Remove redundant checks from pwm_samsung_config()
        pwm: mediatek: Disable clock on PWM configuration failure
        dt-bindings: pwm: Add MT2712/MT7622 information
        pwm: mediatek: Fix clock control issue
        pwm: mediatek: Fix PWM source clock selection
        pwm: mediatek: Fix Kconfig description
        pwm: tegra: Explicitly request exclusive reset control
        pwm: hibvt: Explicitly request exclusive reset control
        pwm: tiehrpwm: Set driver data before runtime PM enable
        pwm: tiehrpwm: Miscellaneous coding style fixups
        pwm: tiecap: Set driver data before runtime PM enable
        pwm: tiecap: Miscellaneous coding style fixups
        dt-bindings: pwm: tiecap: Add TI 66AK2G SoC specific compatible
        pwm: tiehrpwm: fix clock imbalance in probe error path
        pwm: tiehrpwm: Fix runtime PM imbalance at unbind
        pwm: Kconfig: Enable pwm-tiecap to be built for Keystone
        pwm: Add ZTE ZX PWM device driver
        dt-bindings: pwm: Add bindings doc for ZTE ZX PWM controller
        pwm: bcm2835: Support for polarity setting via DT
        ...
      66c9457d
    • Linus Torvalds's avatar
      Merge branch 'bt-fix' (bluetooth fixes from Marcel) · 669bf77a
      Linus Torvalds authored
      Pull bluetooth fix from Marcel Holtmann:
       "All of our mgmt-tester, l2cap-test and rfcomm-tester unit tests are
        passing with this patch"
      
      * emailed patch from Marcel Holtmann <marcel@holtmann.org>:
        Bluetooth: Properly check L2CAP config option output buffer length
      669bf77a
    • Dou Liyang's avatar
      x86/cpu: Remove unused and undefined __generic_processor_info() declaration · e2329b42
      Dou Liyang authored
      The following revert:
      
        2b85b3d2 ("x86/acpi: Restore the order of CPU IDs")
      
      ... got rid of __generic_processor_info(), but forgot to remove its
      declaration in mpspec.h.
      
      Remove the declaration and update the comments as well.
      Signed-off-by: default avatarDou Liyang <douly.fnst@cn.fujitsu.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: lenb@kernel.org
      Link: http://lkml.kernel.org/r/1505101403-29100-1-git-send-email-douly.fnst@cn.fujitsu.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      e2329b42