Ian Rogers 08efcb4a63 libtraceevent: Increase libtraceevent logging when verbose
libtraceevent has added more levels of debug printout and with changes
like:

  https://lore.kernel.org/linux-trace-devel/[email protected]

previously generated output like "registering plugin" is no longer
displayed.

This change makes it so that if perf's verbose debug output is enabled
then the debug and info libtraceevent messages can be displayed.

The code is conditionally enabled based on the libtraceevent version as
discussed in the RFC:

  https://lore.kernel.org/lkml/[email protected]/

v2. Is a rebase and handles the case of building without
    LIBTRACEEVENT_DYNAMIC.

Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Steven Rostedt (VMware) <[email protected]>
Cc: Tzvetomir Stoyanov (VMware) <[email protected]>
Cc: [email protected]
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2021-09-28 16:09:16 -03:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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