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    Subject[PATCH 0/5] tracing/core: various fixes
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    Hi Ingo, Steven,

    I've gathered various tracing fixes that were posted recently.

    Note: the commit b11c53e12f94a46b50bccc7a1a953d7ca1d54a31
    (ftrace: Add task_comm support for trace_event)
    looks good to me. This v3 solves the two following unhandled
    dependencies in v1:

    ENABLE_EVENT_TRACING -> CONTEXT_SWITCH_TRACER
    EVENT_TRACING -> CONTEXT_SWITCH_TRACER

    The latter is tricky because CONTEXT_SWITCH_TRACER depends
    on CONFIG_FTRACE (the tracers menu) from which EVENT_TRACING
    is excluded. A build error can then occur if something selects
    CONFIG_TRACING elsewhere.

    The fix written by Zhaolei follows the {ENABLE_}EVENT_TRACING
    view: we now have CONTEXT_SWITCH_TRACER and ENABLE_CONTEXT_SWITCH_TRACER.

    The former is used by EVENT_TRACING to record cmdlines.
    The latter selects CONTEXT_SWITCH_TRACER plus CONFIG_TRACING.
    To sum up, ENABLE_CONTEXT_SWITCH_TRACER acts only as a "relay".

    It looks good to me, tell me and Zhaolei if you have doubts
    about it.

    Thanks.

    The following changes since commit 5537937696c55530447c20aa27daccb8d0d29b33:
    Ming Lei (1):
    ftrace: fix check for return value of register_module_notifier in event_trace_init

    are available in the git repository at:

    git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
    tracing/core

    Lai Jiangshan (1):
    tracing: add trace_event_read_lock()

    Li Zefan (1):
    tracing/events: change the type of __str_loc_item to unsigned short

    Pekka Enberg (1):
    kmemtrace: fix kernel parameter documentation

    Zhaolei (2):
    ftrace: Add task_comm support for trace_event
    ftrace: clean up of using ftrace_event_enable_disable()

    Documentation/kernel-parameters.txt | 10 --------
    include/trace/ftrace.h | 2 +-
    kernel/trace/Kconfig | 9 +++++-
    kernel/trace/trace.c | 8 ++++++
    kernel/trace/trace_events.c | 42 +++++++++++++---------------------
    kernel/trace/trace_output.c | 25 +++++++++++++++-----
    kernel/trace/trace_output.h | 2 +
    7 files changed, 52 insertions(+), 46 deletions(-)


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