09 May, 2014

1 commit


16 Feb, 2014

1 commit


25 Jan, 2014

1 commit

  • Pull ACPI and power management updates from Rafael Wysocki:
    "As far as the number of commits goes, the top spot belongs to ACPI
    this time with cpufreq in the second position and a handful of PM
    core, PNP and cpuidle updates. They are fixes and cleanups mostly, as
    usual, with a couple of new features in the mix.

    The most visible change is probably that we will create struct
    acpi_device objects (visible in sysfs) for all devices represented in
    the ACPI tables regardless of their status and there will be a new
    sysfs attribute under those objects allowing user space to check that
    status via _STA.

    Consequently, ACPI device eject or generally hot-removal will not
    delete those objects, unless the table containing the corresponding
    namespace nodes is unloaded, which is extremely rare. Also ACPI
    container hotplug will be handled quite a bit differently and cpufreq
    will support CPU boost ("turbo") generically and not only in the
    acpi-cpufreq driver.

    Specifics:

    - ACPI core changes to make it create a struct acpi_device object for
    every device represented in the ACPI tables during all namespace
    scans regardless of the current status of that device. In
    accordance with this, ACPI hotplug operations will not delete those
    objects, unless the underlying ACPI tables go away.

    - On top of the above, new sysfs attribute for ACPI device objects
    allowing user space to check device status by triggering the
    execution of _STA for its ACPI object. From Srinivas Pandruvada.

    - ACPI core hotplug changes reducing code duplication, integrating
    the PCI root hotplug with the core and reworking container hotplug.

    - ACPI core simplifications making it use ACPI_COMPANION() in the
    code "glueing" ACPI device objects to "physical" devices.

    - ACPICA update to upstream version 20131218. This adds support for
    the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves
    debug facilities. From Bob Moore, Lv Zheng and Betty Dall.

    - Init code change to carry out the early ACPI initialization
    earlier. That should allow us to use ACPI during the timekeeping
    initialization and possibly to simplify the EFI initialization too.
    From Chun-Yi Lee.

    - Clenups of the inclusions of ACPI headers in many places all over
    from Lv Zheng and Rashika Kheria (work in progress).

    - New helper for ACPI _DSM execution and rework of the code in
    drivers that uses _DSM to execute it via the new helper. From
    Jiang Liu.

    - New Win8 OSI blacklist entries from Takashi Iwai.

    - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun
    Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava,
    Rashika Kheria, Tang Chen, Zhang Rui.

    - intel_pstate driver updates, including proper Baytrail support,
    from Dirk Brandewie and intel_pstate documentation from Ramkumar
    Ramachandra.

    - Generic CPU boost ("turbo") support for cpufreq from Lukasz
    Majewski.

    - powernow-k6 cpufreq driver fixes from Mikulas Patocka.

    - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark
    Brown.

    - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John
    Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh
    Kumar.

    - cpuidle cleanups from Bartlomiej Zolnierkiewicz.

    - Support for hibernation APM events from Bin Shi.

    - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC
    disabled during thaw transitions from Bjørn Mork.

    - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf
    Hansson.

    - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente
    Kurusa, Rashika Kheria.

    - New tool for profiling system suspend from Todd E Brandt and a
    cpupower tool cleanup from One Thousand Gnomes"

    * tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits)
    thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412)
    cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ
    Documentation: cpufreq / boost: Update BOOST documentation
    cpufreq: exynos: Extend Exynos cpufreq driver to support boost
    cpufreq / boost: Kconfig: Support for software-managed BOOST
    acpi-cpufreq: Adjust the code to use the common boost attribute
    cpufreq: Add boost frequency support in core
    intel_pstate: Add trace point to report internal state.
    cpufreq: introduce cpufreq_generic_get() routine
    ARM: SA1100: Create dummy clk_get_rate() to avoid build failures
    cpufreq: stats: create sysfs entries when cpufreq_stats is a module
    cpufreq: stats: free table and remove sysfs entry in a single routine
    cpufreq: stats: remove hotplug notifiers
    cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly
    cpufreq: speedstep: remove unused speedstep_get_state
    platform: introduce OF style 'modalias' support for platform bus
    PM / tools: new tool for suspend/resume performance optimization
    ACPI: fix module autoloading for ACPI enumerated devices
    ACPI: add module autoloading support for ACPI enumerated devices
    ACPI: fix create_modalias() return value handling
    ...

    Linus Torvalds
     

16 Jan, 2014

1 commit


17 Dec, 2013

1 commit

  • Move debugfs.* to api/fs/. We have a common tools/lib/api/ place where
    the Makefile lives and then we place the headers in subdirs.

    For example, all the fs-related stuff goes to tools/lib/api/fs/ from
    which we get libapikfs.a (acme got almost the naming he wanted :-)) and
    we link it into the tools which need it - in this case perf and
    tools/vm/page-types.

    acme:

    "Looking at the implementation, I think some tools can even link
    directly to the .o files, avoiding the .a file altogether.

    But that is just an optimization/finer granularity tools/lib/
    cherrypicking that toolers can make use of."

    Fixup documentation cleaning target while at it.

    Signed-off-by: Borislav Petkov
    Acked-by: Ingo Molnar
    Cc: Adrian Hunter
    Cc: Andi Kleen
    Cc: Arjan van de Ven
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Pekka Enberg
    Cc: Peter Zijlstra
    Cc: Robert Richter
    Cc: Stanislav Fomichev
    Cc: Stephane Eranian
    Cc: Steven Rostedt
    Link: http://lkml.kernel.org/r/1386605664-24041-2-git-send-email-bp@alien8.de
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov
     

07 Nov, 2013

1 commit

  • Increasingly, Linux is running on thermally constrained devices. The simple
    thermal relationship between processor and fan has become past for modern
    computers.

    As hardware vendors cope with the thermal constraints on their products,
    more sensors are added, new cooling capabilities are introduced. The
    complexity of the thermal relationship can grow exponentially among cooling
    devices, zones, sensors, and trip points. They can also change dynamically.

    To expose such relationship to the userspace, Linux generic thermal layer
    introduced sysfs entry at /sys/class/thermal with a matrix of symbolic
    links, trip point bindings, and device instances. To traverse such
    matrix by hand is not a trivial task. Testing is also difficult in that
    thermal conditions are often exception cases that hard to reach in
    normal operations.

    TMON is conceived as a tool to help visualize, tune, and test the
    complex thermal subsystem.

    Signed-off-by: Jacob Pan
    Signed-off-by: Zhang Rui

    Jacob Pan
     

02 May, 2013

1 commit

  • Pull networking updates from David Miller:
    "Highlights (1721 non-merge commits, this has to be a record of some
    sort):

    1) Add 'random' mode to team driver, from Jiri Pirko and Eric
    Dumazet.

    2) Make it so that any driver that supports configuration of multiple
    MAC addresses can provide the forwarding database add and del
    calls by providing a default implementation and hooking that up if
    the driver doesn't have an explicit set of handlers. From Vlad
    Yasevich.

    3) Support GSO segmentation over tunnels and other encapsulating
    devices such as VXLAN, from Pravin B Shelar.

    4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton.

    5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita
    Dukkipati.

    6) In the PHY layer, allow supporting wake-on-lan in situations where
    the PHY registers have to be written for it to be configured.

    Use it to support wake-on-lan in mv643xx_eth.

    From Michael Stapelberg.

    7) Significantly improve firewire IPV6 support, from YOSHIFUJI
    Hideaki.

    8) Allow multiple packets to be sent in a single transmission using
    network coding in batman-adv, from Martin Hundebøll.

    9) Add support for T5 cxgb4 chips, from Santosh Rastapur.

    10) Generalize the VXLAN forwarding tables so that there is more
    flexibility in configurating various aspects of the endpoints.
    From David Stevens.

    11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver,
    from Dmitry Kravkov.

    12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo
    Neira Ayuso.

    13) Start adding networking selftests.

    14) In situations of overload on the same AF_PACKET fanout socket, or
    per-cpu packet receive queue, minimize drop by distributing the
    load to other cpus/fanouts. From Willem de Bruijn and Eric
    Dumazet.

    15) Add support for new payload offset BPF instruction, from Daniel
    Borkmann.

    16) Convert several drivers over to mdoule_platform_driver(), from
    Sachin Kamat.

    17) Provide a minimal BPF JIT image disassembler userspace tool, from
    Daniel Borkmann.

    18) Rewrite F-RTO implementation in TCP to match the final
    specification of it in RFC4138 and RFC5682. From Yuchung Cheng.

    19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear
    you like netlink, so I implemented netlink dumping of netlink
    sockets.") From Andrey Vagin.

    20) Remove ugly passing of rtnetlink attributes into rtnl_doit
    functions, from Thomas Graf.

    21) Allow userspace to be able to see if a configuration change occurs
    in the middle of an address or device list dump, from Nicolas
    Dichtel.

    22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes
    Frederic Sowa.

    23) Increase accuracy of packet length used by packet scheduler, from
    Jason Wang.

    24) Beginning set of changes to make ipv4/ipv6 fragment handling more
    scalable and less susceptible to overload and locking contention,
    from Jesper Dangaard Brouer.

    25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*()
    instead. From Hong Zhiguo.

    26) Optimize route usage in IPVS by avoiding reference counting where
    possible, from Julian Anastasov.

    27) Convert IPVS schedulers to RCU, also from Julian Anastasov.

    28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger
    Eitzenberger.

    29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG,
    nfnetlink_log, and nfnetlink_queue. From Gao feng.

    30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa.

    31) Support several new r8169 chips, from Hayes Wang.

    32) Support tokenized interface identifiers in ipv6, from Daniel
    Borkmann.

    33) Use usbnet_link_change() helper in USB net driver, from Ming Lei.

    34) Add 802.1ad vlan offload support, from Patrick McHardy.

    35) Support mmap() based netlink communication, also from Patrick
    McHardy.

    36) Support HW timestamping in mlx4 driver, from Amir Vadai.

    37) Rationalize AF_PACKET packet timestamping when transmitting, from
    Willem de Bruijn and Daniel Borkmann.

    38) Bring parity to what's provided by /proc/net/packet socket dumping
    and the info provided by netlink socket dumping of AF_PACKET
    sockets. From Nicolas Dichtel.

    39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin
    Poirier"

    * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
    filter: fix va_list build error
    af_unix: fix a fatal race with bit fields
    bnx2x: Prevent memory leak when cnic is absent
    bnx2x: correct reading of speed capabilities
    net: sctp: attribute printl with __printf for gcc fmt checks
    netlink: kconfig: move mmap i/o into netlink kconfig
    netpoll: convert mutex into a semaphore
    netlink: Fix skb ref counting.
    net_sched: act_ipt forward compat with xtables
    mlx4_en: fix a build error on 32bit arches
    Revert "bnx2x: allow nvram test to run when device is down"
    bridge: avoid OOPS if root port not found
    drivers: net: cpsw: fix kernel warn on cpsw irq enable
    sh_eth: use random MAC address if no valid one supplied
    3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA)
    tg3: fix to append hardware time stamping flags
    unix/stream: fix peeking with an offset larger than data in queue
    unix/dgram: fix peeking with an offset larger than data in queue
    unix/dgram: peek beyond 0-sized skbs
    openvswitch: Remove unneeded ovs_netdev_get_ifindex()
    ...

    Linus Torvalds
     

21 Mar, 2013

2 commits

  • This is a minimal stand-alone user space helper, that allows for debugging or
    verification of emitted BPF JIT images. This is in particular useful for
    emitted opcode debugging, since minor bugs in the JIT compiler can be fatal.
    The disassembler is architecture generic and uses libopcodes and libbfd.

    How to get to the disassembly, example:

    1) `echo 2 > /proc/sys/net/core/bpf_jit_enable`
    2) Load a BPF filter (e.g. `tcpdump -p -n -s 0 -i eth1 host 192.168.20.0/24`)
    3) Run e.g. `bpf_jit_disasm -o` to disassemble the most recent JIT code output

    `bpf_jit_disasm -o` will display the related opcodes to a particular instruction
    as well. Example for x86_64:

    $ ./bpf_jit_disasm
    94 bytes emitted from JIT compiler (pass:3, flen:9)
    ffffffffa0356000 + :
    0: push %rbp
    1: mov %rsp,%rbp
    4: sub $0x60,%rsp
    8: mov %rbx,-0x8(%rbp)
    c: mov 0x68(%rdi),%r9d
    10: sub 0x6c(%rdi),%r9d
    14: mov 0xe0(%rdi),%r8
    1b: mov $0xc,%esi
    20: callq 0xffffffffe0d01b71
    25: cmp $0x86dd,%eax
    2a: jne 0x000000000000003d
    2c: mov $0x14,%esi
    31: callq 0xffffffffe0d01b8d
    36: cmp $0x6,%eax
    [...]
    5c: leaveq
    5d: retq

    $ ./bpf_jit_disasm -o
    94 bytes emitted from JIT compiler (pass:3, flen:9)
    ffffffffa0356000 + :
    0: push %rbp
    55
    1: mov %rsp,%rbp
    48 89 e5
    4: sub $0x60,%rsp
    48 83 ec 60
    8: mov %rbx,-0x8(%rbp)
    48 89 5d f8
    c: mov 0x68(%rdi),%r9d
    44 8b 4f 68
    10: sub 0x6c(%rdi),%r9d
    44 2b 4f 6c
    [...]
    5c: leaveq
    c9
    5d: retq
    c3

    Signed-off-by: Daniel Borkmann
    Signed-off-by: David S. Miller

    Daniel Borkmann
     
  • …/acme/linux into perf/core

    Conflicts:
    tools/Makefile

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

    . Honor parallel jobs, fix from Borislav Petkov

    . Introduce tools/lib/lk library, initially just removing duplication
    among tools/perf and tools/vm. from Borislav Petkov

    . Fix build on non-glibc systems due to libio.h absence, from Cody P Schafer.

    . Remove some perf_session and tracing dead code, from David Ahern.

    . Introduce perf stat --repeat forever, from Frederik Deweerdt.

    . Add perf test entries for checking --cpu in record and stat, from Jiri Olsa.

    . Add perf test entries for checking breakpoint overflow signal handler issues,
    from Jiri Olsa.

    . Add perf test entry for for checking number of EXIT events, from Namhyung Kim.

    . Simplify some perf_evlist methods and to allow 'stat' to share code with
    'record' and 'trace'.

    . Remove dead code in related to libtraceevent integration, from Namhyung Kim.

    . Event group view for 'annotate' in --stdio, --tui and --gtk, from Namhyung Kim.

    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    [ resolved the trivial merge conflict with upstream ]
    Signed-off-by: Ingo Molnar <mingo@kernel.org>

    Ingo Molnar
     

16 Mar, 2013

1 commit

  • This introduces the tools/lib/lk library, that will gradually have the
    routines that now are used in tools/perf/ and other tools and that can
    be shared.

    Start by carving out debugfs routines for general use.

    Signed-off-by: Borislav Petkov
    Cc: Ingo Molnar
    Cc: Steven Rostedt
    Link: http://lkml.kernel.org/r/1361374353-30385-5-git-send-email-bp@alien8.de
    [ committer note: Add tools/lib/lk/ to perf's MANIFEST so that its tarballs continue to build ]
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov
     

21 Feb, 2013

1 commit

  • Pull cgroup changes from Tejun Heo:
    "Nothing too drastic.

    - Removal of synchronize_rcu() from userland visible paths.

    - Various fixes and cleanups from Li.

    - cgroup_rightmost_descendant() added which will be used by cpuset
    changes (it will be a separate pull request)."

    * 'for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
    cgroup: fail if monitored file and event_control are in different cgroup
    cgroup: fix cgroup_rmdir() vs close(eventfd) race
    cpuset: fix cpuset_print_task_mems_allowed() vs rename() race
    cgroup: fix exit() vs rmdir() race
    cgroup: remove bogus comments in cgroup_diput()
    cgroup: remove synchronize_rcu() from cgroup_diput()
    cgroup: remove duplicate RCU free on struct cgroup
    sched: remove redundant NULL cgroup check in task_group_path()
    sched: split out css_online/css_offline from tg creation/destruction
    cgroup: initialize cgrp->dentry before css_alloc()
    cgroup: remove a NULL check in cgroup_exit()
    cgroup: fix bogus kernel warnings when cgroup_create() failed
    cgroup: remove synchronize_rcu() from rebind_subsystems()
    cgroup: remove synchronize_rcu() from cgroup_attach_{task|proc}()
    cgroup: use new hashtable implementation
    cgroups: fix cgroup_event_listener error handling
    cgroups: move cgroup_event_listener.c to tools/cgroup
    cgroup: implement cgroup_rightmost_descendant()
    cgroup: remove unused dummy cgroup_fork_callbacks()

    Linus Torvalds
     

30 Jan, 2013

1 commit


08 Jan, 2013

1 commit


20 Nov, 2012

1 commit

  • Define a Makefile function that can be called with $(call ...) to wrap
    the subdir make invocations in tools/Makefile.

    This will allow us in the next patch to insert bits in there to honour
    O= flags when called from the top-level Makefile.

    Signed-off-by: David Howells
    Cc: Borislav Petkov
    Cc: Ingo Molnar
    Cc: Linus Torvalds
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Thomas Gleixner
    Link: http://lkml.kernel.org/r/1378.1352379110@warthog.procyon.org.uk
    Signed-off-by: Arnaldo Carvalho de Melo

    David Howells
     

12 Apr, 2012

3 commits

  • Now you can do

    $ make tools/

    from the toplevel kernel directory and have the respective tool built.

    If you want to build and install it, do

    $ make tools/_install

    $ make tools/_clean

    should clean the respective tool directories.

    If you want to clean all in tools, simply do

    $ make tools/clean

    Also, if you want to get what the possible targets are, simply calling

    $ make tools/

    should give you the short help.

    $ make tools/install

    installs all tools, of course. Doh.

    Signed-off-by: Borislav Petkov
    Cc: Ingo Molnar
    Cc: Michal Marek
    Cc: Sam Ravnborg
    Link: http://lkml.kernel.org/r/1334162178-17152-6-git-send-email-bp@amd64.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov
     
  • ... and make it the default one so that calling 'make' without arguments
    in the tools/ directory gives you the possible targets to build along
    with a short description of what they are.

    Signed-off-by: Borislav Petkov
    Cc: Ingo Molnar
    Cc: Michal Marek
    Cc: Sam Ravnborg
    Link: http://lkml.kernel.org/r/1334162178-17152-5-git-send-email-bp@amd64.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov
     
  • Add a Makefile with all the targets under tools/.

    Signed-off-by: Borislav Petkov
    Cc: Ingo Molnar
    Cc: Michal Marek
    Cc: Sam Ravnborg
    Link: http://lkml.kernel.org/r/1334162178-17152-4-git-send-email-bp@amd64.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov