Eric Lee / smarc-fsl-linux-kernel

25 Mar, 2019

1 commit

  • 0d5f20c42   batman-adv: Drop license boilerplate ... Browse Code »

    All files got a SPDX-License-Identifier with commit 7db7d9f369a4
    ("batman-adv: Add SPDX license identifier above copyright header"). All the
    required information about the license conditions can be found in
    LICENSES/.

    Signed-off-by: Sven Eckelmann
    Signed-off-by: Simon Wunderlich

    Sven Eckelmann
     

04 Jan, 2019

1 commit

12 Nov, 2018

1 commit

  • 95d8f85c9   batman-adv: Improve includes for trace functionality ... Browse Code »

    The batadv_dbg trace event uses different functionality and datastructures
    which are not directly associated with the trace infrastructure. It should
    not be expected that the trace headers indirectly provide them and instead
    include the required headers directly.

    Signed-off-by: Sven Eckelmann
    Signed-off-by: Simon Wunderlich

    Sven Eckelmann
     

15 Sep, 2018

1 commit

  • d331a7399   batman-adv: Provide debug messages as trace events ... Browse Code »

    A private debug logging infrastructure is currently provided via
    $debug_fs/batman_adv/*/log when CONFIG_BATMAN_ADV_DEBUG is enabled. This is
    not well integrated in the rest of the tracing infrastructure of the
    kernel.

    Other components (like mac80211 or ath10k) allow to gather the debug
    messages using generic trace events which are better integrated. This makes
    it possible to interact with them using the existing userspace tools.

    The tracepoint batadv:batadv_dbg will now be available when
    CONFIG_BATMAN_ADV_DEBUG and CONFIG_BATMAN_ADV_TRACING is activated. The log
    level mask is still used for filtering as usual.

    A full system trace for offline parsing can be created (and read) using:

    $ batctl ll all
    $ trace-cmd record -e batadv:batadv_dbg
    $ trace-cmd report

    The same can also be done without recording to a file

    $ batctl ll all
    $ trace-cmd stream -e batadv:batadv_dbg

    The trace infrastructure is especially helpful when tracing processes:

    $ batctl ll all
    $ ./tools/perf/perf trace --event "batadv:*" batctl p 10.204.32.1
    0.000 batadv:batadv_dbg:batman_adv bat0 Parsing outgoing ARP REQUEST
    0.045 batadv:batadv_dbg:batman_adv bat0 ARP MSG = [src: a2:64:14:53:f8:22-10.204.32.185 dst: 00:00:00:00:00:00-10.204.32.1]
    0.067 batadv:batadv_dbg:batman_adv bat0 Entry updated: 10.204.32.185 a2:64:14:53:f8:22 (vid: -1)
    0.099 batadv:batadv_dbg:batman_adv bat0 batadv_dat_select_candidates(): IP=10.204.32.1 hash(IP)=48902
    0.757 batadv:batadv_dbg:batman_adv bat0 dat_select_candidates() 0: selected fe:2c:91:68:29:2b addr=48977 dist=65460
    1.178 batadv:batadv_dbg:batman_adv bat0 dat_select_candidates() 1: selected fe:81:ab:c5:e3:03 addr=49181 dist=65256
    1.809 batadv:batadv_dbg:batman_adv bat0 dat_select_candidates() 2: selected 66:25:a7:48:37:fb addr=49328 dist=65109
    1.828 batadv:batadv_dbg:batman_adv bat0 DHT_SEND for 10.204.32.1

    Signed-off-by: Sven Eckelmann
    Signed-off-by: Simon Wunderlich

    Sven Eckelmann