1. 20 Jul, 2015 9 commits
    • Masami Hiramatsu's avatar
      perf buildid: Use SBUILD_ID_SIZE macro · d77fac7f
      Masami Hiramatsu authored
      Introduce SBUILD_ID_SIZE macro and use it instead of using BUILD_ID_SIZE
      * 2 + 1.
      Signed-off-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20150715091428.8915.75265.stgit@localhost.localdomainSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      d77fac7f
    • Masami Hiramatsu's avatar
      perf probe: Move ftrace probe-event operations to probe-file.c · 92f6c72e
      Masami Hiramatsu authored
      Move ftrace probe-event operations to probe-file.c from probe-event.c.
      Signed-off-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20150715091407.8915.14316.stgit@localhost.localdomain
      [ Fixed up strlist__new() calls wrt 4a77e218 ("perf strlist: Make dupstr be the...") ]
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      92f6c72e
    • Masami Hiramatsu's avatar
      perf probe: Simplify __add_probe_trace_events code · a3c9de62
      Masami Hiramatsu authored
      Simplify the __add_probe_trace_events() code by taking out the
      probe_trace_event__set_name() and updating show_perf_probe_event()
      Signed-off-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20150715091400.8915.85501.stgit@localhost.localdomainSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a3c9de62
    • Wang Nan's avatar
      perf record: Allow filtering perf's pid via --exclude-perf · 4ba1faa1
      Wang Nan authored
      This patch allows 'perf record' to exclude events issued by perf itself
      by '--exclude-perf' option.
      
      Before this patch, when doing something like:
      
       # perf record -a -e syscalls:sys_enter_write <cmd>
      
      One could easily get result like this:
      
       # /tmp/perf report --stdio
       ...
        # Overhead  Command  Shared Object       Symbol
        # ........  .......  ..................  ....................
        #
            99.99%  perf     libpthread-2.18.so  [.] __write_nocancel
            0.01%   ls       libc-2.18.so        [.] write
            0.01%   sshd     libc-2.18.so        [.] write
       ...
      
      Where most events are generated by perf itself.
      
      A shell trick can be done to filter perf itself out:
      
       # cat << EOF > ./tmp
       > #!/bin/sh
       > exec perf record -e ... --filter="common_pid != \$\$" -a sleep 10
       > EOF
       # chmod a+x ./tmp
       # ./tmp
      
      However, doing so is user unfriendly.
      
      This patch extracts evsel iteration framework introduced by patch 'perf
      record: Apply filter to all events in a glob matching' into
      foreach_evsel_in_last_glob(), and makes exclude_perf() function append
      new filter expression to each evsel selected by a '-e' selector.
      
      To avoid losing filters if user pass '--filter' after '--exclude-perf',
      this patch uses perf_evsel__append_filter() in both case, instead of
      perf_evsel__set_filter() which removes old filter. As a side effect, now
      it is possible to use multiple '--filter' option for one selector. They
      are combinded with '&&'.
      Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1436513770-8896-2-git-send-email-wangnan0@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4ba1faa1
    • Wang Nan's avatar
      perf record: Apply filter to all events in a glob matching · 15bfd2cc
      Wang Nan authored
      There is an old problem in perf's filter applying which first posted at
      Sep. 2014 at https://lkml.org/lkml/2014/9/9/944 that, if passing
      multiple events in a glob matching expression in cmdline then add
      '--filter' after them, the filter will be applied on only the last one.
      
      For example:
      
       # dd if=/dev/zero of=/dev/null &
       [1] 464
       # perf record -a -e 'syscalls:sys_*_read' --filter 'common_pid != 464' sleep 0.1
       [ perf record: Woken up 1 times to write data ]
       [ perf record: Captured and wrote 0.239 MB perf.data (2094 samples) ]
       # perf report --stdio | tee
       ...
       # Samples: 2K of event 'syscalls:sys_enter_read'
       # Event count (approx.): 2092
       ...
       # Samples: 2  of event 'syscalls:sys_exit_read'
       # Event count (approx.): 2
       ...
      
      In this example, filter only applied on 'syscalls:sys_exit_read', and
      there's no way to set filter for ''syscalls:sys_enter_read'.
      
      This patch adds a 'cmdline_group_boundary' for 'struct evsel', and
      apply filter on all events between two boundary marks.
      
      After applying this patch:
      
       # perf record -a -e 'syscalls:sys_*_read' --filter 'common_pid != 464' sleep 0.1
       [ perf record: Woken up 1 times to write data ]
       [ perf record: Captured and wrote 0.031 MB perf.data (3 samples) ]
       # perf report --stdio | tee
       ...
       # Samples: 1  of event 'syscalls:sys_enter_read'
       # Event count (approx.): 1
       ...
       # Samples: 2  of event 'syscalls:sys_exit_read'
       # Event count (approx.): 2
       ...
      Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
      Reported-by: default avatarBrendan Gregg <brendan.d.gregg@gmail.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Zefan Li <lizefan@huawei.com>
      Cc: pi3orama@163.com
      Link: http://lkml.kernel.org/r/1436513770-8896-1-git-send-email-wangnan0@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      15bfd2cc
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Support 'strace' syscall event groups · 005438a8
      Arnaldo Carvalho de Melo authored
      I.e.:
      
        $ cat ~/share/perf-core/strace/groups/file
        access
        chmod
        creat
        execve
        faccessat
        getcwd
        lstat
        mkdir
        open
        openat
        quotactl
        readlink
        rename
        rmdir
        stat
        statfs
        symlink
        unlink
        $
      
      Then, on a quiet desktop, try running this and then moving your mouse to
      see the deluge of mouse related activity:
      
        # perf probe 'vfs_getname=getname_flags:72 pathname=filename:string'
        Added new event:
          probe:vfs_getname    (on getname_flags:72 with pathname=filename:string)
      
        You can now use it in all perf tools, such as:
      
      	perf record -e probe:vfs_getname -aR sleep 1
        #
        # trace --ev probe:vfs_getname --filter-pids 2232 -e file
         0.042 (0.042 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
         0.042 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/xterm")
         0.100 (0.100 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
         0.142 (0.018 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
         0.142 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/index.theme")
         0.192 (0.069 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
         0.230 (0.017 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
         0.230 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/usr/share/icons/Adwaita/cursors/xterm")
         0.253 (0.041 ms): mousetweaks/2235  ... [continued]: open()) = 14
         0.459 (0.008 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
         0.459 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/left_side")
         0.468 (0.017 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
      
      Need to combine that raw_syscalls:sys_enter(open) + probe:vfs_getname +
      raw_syscalls:sys_exit(open) sequence...
      
      Now, if you're bored, please write some more syscall groups, like the ones
      in 'strace' and send it our way :-)
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Milian Wolff <mail@milianw.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-a42xklu59lcbxp7bbnic74a8@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      005438a8
    • Arnaldo Carvalho de Melo's avatar
      perf strlist: Make parse_list() private · 8816d38d
      Arnaldo Carvalho de Melo authored
      It is not used anywhere, expose it when/if needed.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-f6in51stj17avhk4rv11gjgg@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      8816d38d
    • Arnaldo Carvalho de Melo's avatar
      perf strlist: Allow substitutions from file contents in a given directory · 8ff9daf3
      Arnaldo Carvalho de Melo authored
      So, if we have an strlist equal to:
      
         "file,close"
      
      And we call it as:
      
         struct strlist_config *config = { .dirname = "~/strace/groups", };
         struct strlist *slist = strlist__new("file, close", &config);
      
      And we have:
        $ cat ~/strace/groups/file
        access
        open
        openat
        statfs
      
      Then the resulting strlist will have these contents:
      
        [ "access", "open", "openat", "statfs", "close" ]
      
      This will be used to implement strace syscall groups in 'perf trace',
      but can be used in some other tool, thus being implemented in 'strlist'.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-wi6l6qtomqlywwr6005jvs05@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      8ff9daf3
    • Arnaldo Carvalho de Melo's avatar
      perf strlist: Make dupstr be the default and part of an extensible config parm · 4a77e218
      Arnaldo Carvalho de Melo authored
      So that we can pass more info to strlist__new() without having to change
      its function signature, just adding entries to the strlist_config struct
      with sensible defaults for when those fields are not specified.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-5uaaler4931i0s9sedxjquhq@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4a77e218
  2. 16 Jul, 2015 1 commit
  3. 14 Jul, 2015 1 commit
  4. 06 Jul, 2015 18 commits
  5. 05 Jul, 2015 6 commits
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Copy rbtree.h from the kernel · 4407f967
      Arnaldo Carvalho de Melo authored
      We were using the include/linux/rbtree.h directly from the kernel,
      which broke the build as soon as it started using rcupdate.h, to
      avoid dragging the rcu header files into tools/, for which there is
      no use so far, grab a copy of rbtree.h.
      
      This is the minimal fix, later patches will copy as well lib/rbtree.c
      and move rbtree.h into tools/include/, etc.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-dfmuj0j63w4by7vhlh4hhn74@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4407f967
    • Arnaldo Carvalho de Melo's avatar
      tools: Adopt {READ,WRITE_ONCE} from the kernel · 728abda6
      Arnaldo Carvalho de Melo authored
      We need it to build rbtree.c after this cset:
      
        commit d72da4a4
        Author: Peter Zijlstra <peterz@infradead.org>
        Date:   Wed May 27 11:09:36 2015 +0930
      
          rbtree: Make lockless searches non-fatal
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-qlnzhezv5ddwst0w9fydju0y@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      728abda6
    • Linus Torvalds's avatar
      Linux 4.2-rc1 · d770e558
      Linus Torvalds authored
      d770e558
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.2-2' of... · a585d2b7
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull late x86 platform driver updates from Darren Hart:
       "The following came in a bit later and I wanted them to bake in next a
        few more days before submitting, thus the second pull.
      
        A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
        dell-laptop, a couple minor fixes, and some updated documentation in
        the dell-laptop comments.
      
        intel_pmc_ipc:
         - Add Intel Apollo Lake PMC IPC driver
      
        tc1100-wmi:
         - Delete an unnecessary check before the function call "kfree"
      
        dell-laptop:
         - Fix allocating & freeing SMI buffer page
         - Show info about WiGig and UWB in debugfs
         - Update information about wireless control"
      
      * tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
        tc1100-wmi: Delete an unnecessary check before the function call "kfree"
        dell-laptop: Fix allocating & freeing SMI buffer page
        dell-laptop: Show info about WiGig and UWB in debugfs
        dell-laptop: Update information about wireless control
      a585d2b7
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 1dc51b82
      Linus Torvalds authored
      Pull more vfs updates from Al Viro:
       "Assorted VFS fixes and related cleanups (IMO the most interesting in
        that part are f_path-related things and Eric's descriptor-related
        stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
        fs-cache series, DAX patches, Jan's file_remove_suid() work"
      
      [ I'd say this is much more than "fixes and related cleanups".  The
        file_table locking rule change by Eric Dumazet is a rather big and
        fundamental update even if the patch isn't huge.   - Linus ]
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
        9p: cope with bogus responses from server in p9_client_{read,write}
        p9_client_write(): avoid double p9_free_req()
        9p: forgetting to cancel request on interrupted zero-copy RPC
        dax: bdev_direct_access() may sleep
        block: Add support for DAX reads/writes to block devices
        dax: Use copy_from_iter_nocache
        dax: Add block size note to documentation
        fs/file.c: __fget() and dup2() atomicity rules
        fs/file.c: don't acquire files->file_lock in fd_install()
        fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
        vfs: avoid creation of inode number 0 in get_next_ino
        namei: make set_root_rcu() return void
        make simple_positive() public
        ufs: use dir_pages instead of ufs_dir_pages()
        pagemap.h: move dir_pages() over there
        remove the pointless include of lglock.h
        fs: cleanup slight list_entry abuse
        xfs: Correctly lock inode when removing suid and file capabilities
        fs: Call security_ops->inode_killpriv on truncate
        fs: Provide function telling whether file_remove_privs() will do anything
        ...
      1dc51b82
    • Linus Torvalds's avatar
      bluetooth: fix list handling · 9b284cbd
      Linus Torvalds authored
      Commit 835a6a2f ("Bluetooth: Stop sabotaging list poisoning")
      thought that the code was sabotaging the list poisoning when NULL'ing
      out the list pointers and removed it.
      
      But what was going on was that the bluetooth code was using NULL
      pointers for the list as a way to mark it empty, and that commit just
      broke it (and replaced the test with NULL with a "list_empty()" test on
      a uninitialized list instead, breaking things even further).
      
      So fix it all up to use the regular and real list_empty() handling
      (which does not use NULL, but a pointer to itself), also making sure to
      initialize the list properly (the previous NULL case was initialized
      implicitly by the session being allocated with kzalloc())
      
      This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
      An.
      
      [ I would normally expect to get this through the bt tree, but I'm going
        to release -rc1, so I'm just committing this directly   - Linus ]
      Reported-and-tested-by: default avatarJörg Otte <jrg.otte@gmail.com>
      Cc: Alexey Dobriyan <adobriyan@gmail.com>
      Original-by: default avatarTedd Ho-Jeong An <tedd.an@intel.com>
      Original-by: Marcel Holtmann <marcel@holtmann.org>:
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9b284cbd
  6. 04 Jul, 2015 5 commits
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 5c755fe1
      Linus Torvalds authored
      Pull SCSI target updates from Nicholas Bellinger:
       "It's been a busy development cycle for target-core in a number of
        different areas.
      
        The fabric API usage for se_node_acl allocation is now within
        target-core code, dropping the external API callers for all fabric
        drivers tree-wide.
      
        There is a new conversion to RCU hlists for se_node_acl and
        se_portal_group LUN mappings, that turns fast-past LUN lookup into a
        completely lockless code-path.  It also removes the original
        hard-coded limitation of 256 LUNs per fabric endpoint.
      
        The configfs attributes for backends can now be shared between core
        and driver code, allowing existing drivers to use common code while
        still allowing flexibility for new backend provided attributes.
      
        The highlights include:
      
         - Merge sbc_verify_dif_* into common code (sagi)
         - Remove iscsi-target support for obsolete IFMarker/OFMarker
           (Christophe Vu-Brugier)
         - Add bidi support in target/user backend (ilias + vangelis + agover)
         - Move se_node_acl allocation into target-core code (hch)
         - Add crc_t10dif_update common helper (akinobu + mkp)
         - Handle target-core odd SGL mapping for data transfer memory
           (akinobu)
         - Move transport ID handling into target-core (hch)
         - Move task tag into struct se_cmd + support 64-bit tags (bart)
         - Convert se_node_acl->device_list[] to RCU hlist (nab + hch +
           paulmck)
         - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch +
           paulmck)
         - Simplify target backend driver registration (hch)
         - Consolidate + simplify target backend attribute implementations
           (hch + nab)
         - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch)
         - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab)
         - Drop unnecessary core_tpg_register TFO parameter (nab)
         - Use 64-bit LUNs tree-wide (hannes)
         - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)"
      
      * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits)
        target: Bump core version to v5.0
        target: remove target_core_configfs.h
        target: remove unused TARGET_CORE_CONFIG_ROOT define
        target: consolidate version defines
        target: implement WRITE_SAME with UNMAP bit using ->execute_unmap
        target: simplify UNMAP handling
        target: replace se_cmd->execute_rw with a protocol_data field
        target/user: Fix inconsistent kmap_atomic/kunmap_atomic
        target: Send UA when changing LUN inventory
        target: Send UA upon LUN RESET tmr completion
        target: Send UA on ALUA target port group change
        target: Convert se_lun->lun_deve_lock to normal spinlock
        target: use 'se_dev_entry' when allocating UAs
        target: Remove 'ua_nacl' pointer from se_ua structure
        target_core_alua: Correct UA handling when switching states
        xen-scsiback: Fix compile warning for 64-bit LUN
        target: Remove TARGET_MAX_LUNS_PER_TRANSPORT
        target: use 64-bit LUNs
        target: Drop duplicate + unused se_dev_check_wce
        target: Drop unnecessary core_tpg_register TFO parameter
        ...
      5c755fe1
    • Linus Torvalds's avatar
      Merge tag 'ntb-4.2' of git://github.com/jonmason/ntb · 6d7c8e1b
      Linus Torvalds authored
      Pull NTB updates from Jon Mason:
       "This includes a pretty significant reworking of the NTB core code, but
        has already produced some significant performance improvements.
      
        An abstraction layer was added to allow the hardware and clients to be
        easily added.  This required rewriting the NTB transport layer for
        this abstraction layer.  This modification will allow future "high
        performance" NTB clients.
      
        In addition to this change, a number of performance modifications were
        added.  These changes include NUMA enablement, using CPU memcpy
        instead of asyncdma, and modification of NTB layer MTU size"
      
      * tag 'ntb-4.2' of git://github.com/jonmason/ntb: (22 commits)
        NTB: Add split BAR output for debugfs stats
        NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
        NTB: Print driver name and version in module init
        NTB: Increase transport MTU to 64k from 16k
        NTB: Rename Intel code names to platform names
        NTB: Default to CPU memcpy for performance
        NTB: Improve performance with write combining
        NTB: Use NUMA memory in Intel driver
        NTB: Use NUMA memory and DMA chan in transport
        NTB: Rate limit ntb_qp_link_work
        NTB: Add tool test client
        NTB: Add ping pong test client
        NTB: Add parameters for Intel SNB B2B addresses
        NTB: Reset transport QP link stats on down
        NTB: Do not advance transport RX on link down
        NTB: Differentiate transport link down messages
        NTB: Check the device ID to set errata flags
        NTB: Enable link for Intel root port mode in probe
        NTB: Read peer info from local SPAD in transport
        NTB: Split ntb_hw_intel and ntb_transport drivers
        ...
      6d7c8e1b
    • Al Viro's avatar
      9p: cope with bogus responses from server in p9_client_{read,write} · 0f1db7de
      Al Viro authored
      if server claims to have written/read more than we'd told it to,
      warn and cap the claimed byte count to avoid advancing more than
      we are ready to.
      0f1db7de
    • Al Viro's avatar
      p9_client_write(): avoid double p9_free_req() · 67e808fb
      Al Viro authored
      Braino in "9p: switch p9_client_write() to passing it struct iov_iter *";
      if response is impossible to parse and we discard the request, get the
      out of the loop right there.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      67e808fb
    • Al Viro's avatar
      9p: forgetting to cancel request on interrupted zero-copy RPC · a84b69cb
      Al Viro authored
      If we'd already sent a request and decide to abort it, we *must*
      issue TFLUSH properly and not just blindly reuse the tag, or
      we'll get seriously screwed when response eventually arrives
      and we confuse it for response to later request that had reused
      the same tag.
      
      Cc: stable@vger.kernel.org # v3.2 and later
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      a84b69cb