1. 24 Apr, 2014 23 commits
  2. 20 Apr, 2014 5 commits
  3. 19 Apr, 2014 12 commits
    • Adrien BAK's avatar
      perf tools: Improve error reporting · ffa91880
      Adrien BAK authored
      In the current version, when using perf record, if something goes
      wrong in tools/perf/builtin-record.c:375
        session = perf_session__new(file, false, NULL);
      
      The error message:
      "Not enough memory for reading per file header"
      
      is issued. This error message seems to be outdated and is not very
      helpful. This patch proposes to replace this error message by
      "Perf session creation failed"
      
      I believe this issue has been brought to lkml:
      https://lkml.org/lkml/2014/2/24/458
      although this patch only tackles a (small) part of the issue.
      
      Additionnaly, this patch improves error reporting in
      tools/perf/util/data.c open_file_write.
      
      Currently, if the call to open fails, the user is unaware of it.
      This patch logs the error, before returning the error code to
      the caller.
      Reported-by: default avatarWill Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarAdrien BAK <adrien.bak@metascale.org>
      Link: http://lkml.kernel.org/r/1397786443.3093.4.camel@beast
      [ Reorganize the changelog into paragraphs ]
      [ Added empty line after fd declaration in open_file_write ]
      Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
      ffa91880
    • Vladimir Nikulichev's avatar
      perf tools: Adjust symbols in VDSO · 922d0e4d
      Vladimir Nikulichev authored
      pert-report doesn't resolve function names in VDSO:
      
      $ perf report --stdio -g flat,0.0,15,callee --sort pid
      ...
                  8.76%
                     0x7fff6b1fe861
                     __gettimeofday
                     ACE_OS::gettimeofday()
      ...
      
      In this case symbol values should be adjusted the same way as for executables,
      relocatable objects and prelinked libraries.
      
      After fix:
      
      $ perf report --stdio -g flat,0.0,15,callee --sort pid
      ...
                  8.76%
                     __vdso_gettimeofday
                     __gettimeofday
                     ACE_OS::gettimeofday()
      Signed-off-by: default avatarVladimir Nikulichev <nvs@tbricks.com>
      Tested-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Reviewed-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvsSigned-off-by: default avatarJiri Olsa <jolsa@redhat.com>
      922d0e4d
    • Alexander Yarygin's avatar
      perf kvm: Fix 'Min time' counting in report command · acb61fc8
      Alexander Yarygin authored
      Every event in the perf-kvm has a 'stats' structure, which contains
      max/min/average/etc times of handling this event.
      The problem is that the 'perf-kvm stat report' command always shows
      that 'min time' is 0us for every event. Example:
      
       # perf kvm stat report
      
       Analyze events for all VCPUs:
      
          VM-EXIT    Samples  Samples%     Time%   Min Time   Max Time Avg time
        [..]
        0xB2 MSCH         12     0.07%     0.00%        0us        8us 7.31us ( +-   2.11% )
        0xB2 CHSC         12     0.07%     0.00%        0us       18us 9.39us ( +-   9.49% )
        0xB2 STPX          8     0.05%     0.00%        0us        2us 1.88us ( +-   7.18% )
        0xB2 STSI          7     0.04%     0.00%        0us       44us 16.49us ( +-  38.20% )
        [..]
      
      This happens because the 'stats' structure is not initialized and
      stats->min equals to 0. Lets initialize the structure for every
      event after its allocation using init_stats() function. This initializes
      stats->min to -1 and makes 'Min time' statistics counting work:
      
       # perf kvm stat report
      
       Analyze events for all VCPUs:
      
          VM-EXIT    Samples  Samples%     Time%   Min Time   Max Time Avg time
        [..]
        0xB2 MSCH         12     0.07%     0.00%        6us        8us 7.31us ( +-   2.11% )
        0xB2 CHSC         12     0.07%     0.00%        7us       18us 9.39us ( +-   9.49% )
        0xB2 STPX          8     0.05%     0.00%        1us        2us 1.88us ( +-   7.18% )
        0xB2 STSI          7     0.04%     0.00%        1us       44us 16.49us ( +-  38.20% )
        [..]
      Signed-off-by: default avatarAlexander Yarygin <yarygin@linux.vnet.ibm.com>
      Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Link: http://lkml.kernel.org/r/1397053319-2130-3-git-send-email-borntraeger@de.ibm.com
      [ Fixing the perf examples changelog output ]
      Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
      acb61fc8
    • Eric Dumazet's avatar
      coredump: fix va_list corruption · 404ca80e
      Eric Dumazet authored
      A va_list needs to be copied in case it needs to be used twice.
      
      Thanks to Hugh for debugging this issue, leading to various panics.
      
      Tested:
      
        lpq84:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern
      
      'produce_core' is simply : main() { *(int *)0 = 1;}
      
        lpq84:~# ./produce_core
        Segmentation fault (core dumped)
        lpq84:~# dmesg | tail -1
        [  614.352947] Core dump to |/foobar12345 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 (null) pipe failed
      
      Notice the last argument was replaced by a NULL (we were lucky enough to
      not crash, but do not try this on your production machine !)
      
      After fix :
      
        lpq83:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern
        lpq83:~# ./produce_core
        Segmentation fault
        lpq83:~# dmesg | tail -1
        [  740.800441] Core dump to |/foobar12345 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 pipe failed
      
      Fixes: 5fe9d8ca ("coredump: cn_vprintf() has no reason to call vsnprintf() twice")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Diagnosed-by: default avatarHugh Dickins <hughd@google.com>
      Acked-by: default avatarOleg Nesterov <oleg@redhat.com>
      Cc: Neil Horman <nhorman@tuxdriver.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: stable@vger.kernel.org # 3.11+
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      404ca80e
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 6d459690
      Linus Torvalds authored
      Pull x86 fix from Ingo Molnar:
       "This fixes the preemption-count imbalance crash reported by Owen
        Kibel"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/mce: Fix CMCI preemption bugs
      6d459690
    • Linus Torvalds's avatar
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 8f98f6f5
      Linus Torvalds authored
      Pull scheduler fixes from Ingo Molnar:
       "Two fixes:
      
         - a SCHED_DEADLINE task selection fix
         - a sched/numa related lockdep splat fix"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched: Check for stop task appearance when balancing happens
        sched/numa: Fix task_numa_free() lockdep splat
      8f98f6f5
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 8de3f7a7
      Linus Torvalds authored
      Pull perf fixes from Ingo Molnar:
       "Two kernel side fixes:
      
         - an Intel uncore PMU driver potential crash fix
         - a kprobes/perf-call-graph interaction fix"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU
        kprobes/x86: Fix page-fault handling logic
      8de3f7a7
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · b9312420
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Unfortunately this contains no easter eggs, its a bit larger than I'd
        like, but I included a patch that just moves code from one file to
        another and I'd like to avoid merge conflicts with that later, so it
        makes it seem worse than it is,
      
        Otherwise:
         - radeon: fixes to use new microcode to stabilise some cards, use
           some common displayport code, some runtime pm fixes, pll regression
           fixes
         - i915: fix for some context oopses, a warn in a used path, backlight
           fixes
         - nouveau: regression fix
         - omap: a bunch of fixes"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (51 commits)
        drm: bochs: drop unused struct fields
        drm: bochs: add power management support
        drm: cirrus: add power management support
        drm: Split out drm_probe_helper.c from drm_crtc_helper.c
        drm/plane-helper: Don't fake-implement primary plane disabling
        drm/ast: fix value check in cbr_scan2
        drm/nouveau/bios: fix a bit shift error introduced by 457e77b2
        drm/radeon/ci: make sure mc ucode is loaded before checking the size
        drm/radeon/si: make sure mc ucode is loaded before checking the size
        drm/radeon: improve PLL params if we don't match exactly v2
        drm/radeon: memory leak on bo reservation failure. v2
        drm/radeon: fix VCE fence command
        drm/radeon: re-enable mclk dpm on R7 260X asics
        drm/radeon: add support for newer mc ucode on CI (v2)
        drm/radeon: add support for newer mc ucode on SI (v2)
        drm/radeon: apply more strict limits for PLL params v2
        drm/radeon: update CI DPM powertune settings
        drm/radeon: fix runpm handling on APUs (v4)
        drm/radeon: disable mclk dpm on R7 260X
        drm/tegra: Remove gratuitous pad field
        ...
      b9312420
    • Dave Airlie's avatar
      Merge branch 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux into drm-next · a42892ed
      Dave Airlie authored
      Some i2c fixes over DisplayPort.
      
      * 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux:
        drm/radeon: Improve vramlimit module param documentation
        drm/radeon: fix audio pin counts for DCE6+ (v2)
        drm/radeon/dp: switch to the common i2c over aux code
        drm/dp/i2c: Update comments about common i2c over dp assumptions (v3)
        drm/dp/i2c: send bare addresses to properly reset i2c connections (v4)
        drm/radeon/dp: handle zero sized i2c over aux transactions (v2)
        drm/i915: support address only i2c-over-aux transactions
        drm/tegra: dp: Support address-only I2C-over-AUX transactions
      a42892ed
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · ebfc45ee
      Linus Torvalds authored
      Pull more networking fixes from David Miller:
      
       1) Fix mlx4_en_netpoll implementation, it needs to schedule a NAPI
          context, not synchronize it.  From Chris Mason.
      
       2) Ipv4 flow input interface should never be zero, it should be
          LOOPBACK_IFINDEX instead.  From Cong Wang and Julian Anastasov.
      
       3) Properly configure MAC to PHY connection in mvneta devices, from
          Thomas Petazzoni.
      
       4) sys_recv should use SYSCALL_DEFINE.  From Jan Glauber.
      
       5) Tunnel driver ioctls do not use the correct namespace, fix from
          Nicolas Dichtel.
      
       6) Fix memory leak on seccomp filter attach, from Kees Cook.
      
       7) Fix lockdep warning for nested vlans, from Ding Tianhong.
      
       8) Crashes can happen in SCTP due to how the auth_enable value is
          managed, fix from Vlad Yasevich.
      
       9) Wireless fixes from John W Linville and co.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (45 commits)
        net: sctp: cache auth_enable per endpoint
        tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled
        vlan: Fix lockdep warning when vlan dev handle notification
        seccomp: fix memory leak on filter attach
        isdn: icn: buffer overflow in icn_command()
        ip6_tunnel: use the right netns in ioctl handler
        sit: use the right netns in ioctl handler
        ip_tunnel: use the right netns in ioctl handler
        net: use SYSCALL_DEFINEx for sys_recv
        net: mdio-gpio: Add support for separate MDI and MDO gpio pins
        net: mdio-gpio: Add support for active low gpio pins
        net: mdio-gpio: Use devm_ functions where possible
        ipv4, route: pass 0 instead of LOOPBACK_IFINDEX to fib_validate_source()
        ipv4, fib: pass LOOPBACK_IFINDEX instead of 0 to flowi4_iif
        mlx4_en: don't use napi_synchronize inside mlx4_en_netpoll
        net: mvneta: properly configure the MAC <-> PHY connection in all situations
        net: phy: add minimal support for QSGMII PHY
        sfc:On MCDI timeout, issue an FLR (and mark MCDI to fail-fast)
        mwifiex: fix hung task on command timeout
        mwifiex: process event before command response
        ...
      ebfc45ee
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 6e66d5da
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "A set of 5 small cifs fixes"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        cif: fix dead code
        cifs: fix error handling cifs_user_readv
        fs: cifs: remove unused variable.
        Return correct error on query of xattr on file with empty xattrs
        cifs: Wait for writebacks to complete before attempting write.
      6e66d5da
    • Linus Torvalds's avatar
      Merge tag 'char-misc-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 25bfe4f5
      Linus Torvalds authored
      Pull char/misc driver fixes from Greg KH:
       "Here are a few driver fixes for char/misc drivers that resolve
        reported issues.
      
        All have been in linux-next successfully for a few days"
      
      * tag 'char-misc-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts
        Tools: hv: Handle the case when the target file exists correctly
        vme_tsi148: Utilize to_pci_dev() macro
        vme_tsi148: Fix PCI address mapping assumption
        vme_tsi148: Fix typo in tsi148_slave_get()
        w1: avoid recursive device_add
        w1: fix netlink refcnt leak on error path
        misc: Grammar s/addition/additional/
        drivers: mcb: fix memory leak in chameleon_parse_cells() error path
        mei: ignore client writing state during cb completion
        mei: me: do not load the driver if the FW doesn't support MEI interface
        GenWQE: Increase driver version number
        GenWQE: Fix multithreading problems
        GenWQE: Ensure rc is not returning an uninitialized value
        GenWQE: Add wmb before DDCB is started
        GenWQE: Enable access to VPD flash area
      25bfe4f5