lttng-disable-event(1)
======================
:revdate: 28 November 2016


NAME
----
lttng-disable-event - Disable LTTng event rules


SYNOPSIS
--------
[verse]
*lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *disable-event*
      (option:--kernel [option:--probe | option:--function | option:--syscall] |
       option:--userspace | option:--jul | option:--log4j | option:--python)
      [option:--session='SESSION'] [option:--channel='CHANNEL']
      (option:--all-events | 'EVENT'[,'EVENT']...)

DESCRIPTION
-----------
The `lttng disable-event` command disables one or more event rules
previously enabled by the man:lttng-enable-event(1) command.

Event rules are always assigned to a channel when they are created. If
the option:--channel option is omitted, the default channel named
`channel0` is used.

If the option:--session option is omitted, the chosen channel is picked
from the current tracing session.

If the option:--all-events option is used, all the existing event rules
of the chosen domain are disabled. Otherwise, at least one event rule
to disable named 'EVENT' must be specified.

With the option:--kernel option, the event source type can be specified
using one of the option:--tracepoint, option:--probe,
option:--function, or option:--syscall options. See
man:lttng-enable-event(1) for more details about event source
types.

Events can be disabled while tracing is active
(use man:lttng-start(1) to make a tracing session active).


include::common-cmd-options-head.txt[]


Domain
~~~~~~
One of:

option:-j, option:--jul::
    Disable event rules in the `java.util.logging` (JUL) domain.

option:-k, option:--kernel::
    Disable event rules in the Linux kernel domain.

option:-l, option:--log4j::
    Disable event rules in the Apache log4j domain.

option:-p, option:--python::
    Disable event rules in the Python domain.

option:-u, option:--userspace::
    Disable event rules in the user space domain.


Target
~~~~~~
option:-c 'CHANNEL', option:--channel='CHANNEL'::
    Disable event rules in the channel named 'CHANNEL' instead
    of the default channel name `channel0`.

option:-s 'SESSION', option:--session='SESSION'::
    Disable event rules in the tracing session named 'SESSION'
    instead of the current tracing session.


Event source type
~~~~~~~~~~~~~~~~~
One of:

option:--function::
    Linux kernel kretprobe. Only available with the option:--kernel
    domain option.

option:--probe::
    Linux kernel kprobe. Only available with the option:--kernel
    domain option.

option:--syscall::
    Linux kernel system call. Only available with the option:--kernel
    domain option.

option:--tracepoint::
    Linux kernel or application tracepoint. Only available
    with the option:--kernel domain option (default Linux kernel
    domain event source type).


Disabling
~~~~~~~~~
option:-a, option:--all-events::
    Disable all enabled event rules in the chosen tracing session,
    tracing domain, and channel.

include::common-cmd-help-options.txt[]


include::common-cmd-footer.txt[]


SEE ALSO
--------
man:lttng-enable-event(1),
man:lttng(1)
