[v6,0/3] Remove redundant trace-cmd plugin handling logic

Message

Tzvetomir Stoyanov (VMware) Oct. 7, 2019, 11:49 a.m. UTC

Currently there are no trace-cmd related plugins, all of them
are designed to be used with libtraceeevnt. As both libtraceevent
and trace-cmd have logic for managing plugins, the one in trace-cmd
is redundant. Those redundant code is removed and replaced with calls
to libtraceeevnt plugin APIs. When trace-cmd has to load any plugins,
it uses libtraceeevnt to do the job.

A new libtraceevent API is introduced, which can be used to define
custom plugin directories. It is used by trace-cmd to load development
plugins, if any. 

An initial infrastructure for trace-cmd specific plugins is added - 
new lib/trace-cmd/plugins directory and an initial set of APIs
for working with trace-cmd plugins.

[
  v6 changes:
   - Introduced new libtraceevent API for adding custom plugin directories.

  v5 changes:
   - Removed accepted patches from the patch set.
   - Moved logic which loads traceevent development
     plugins from libtraceevent to trace-cmd application.
]

Tzvetomir Stoyanov (VMware) (3):
  trace-cmd: Introduced new traceevent API, for adding new plugins
    directories.
  trace-cmd: Load libtraceevent plugins from build folder, if exists.
  trace-cmd: Add initial infrastructure for trace-cmd specific plugins.

 .gitignore                         |   1 +
 Makefile                           |  40 +++-
 include/trace-cmd/trace-cmd.h      |  42 ++++
 include/traceevent/event-parse.h   |   7 +
 lib/trace-cmd/Makefile             |   1 +
 lib/trace-cmd/plugins/Makefile     |  58 ++++++
 lib/trace-cmd/trace-input.c        |   7 +-
 lib/trace-cmd/trace-plugin.c       | 313 +++++++++++++++++++++++++++++
 lib/trace-cmd/trace-util.c         |  42 ++++
 lib/traceevent/event-parse-local.h |   5 +-
 lib/traceevent/event-parse.c       |   1 +
 lib/traceevent/event-plugin.c      |  70 +++++++
 tracecmd/trace-check-events.c      |   7 +-
 tracecmd/trace-list.c              |  14 +-
 14 files changed, 575 insertions(+), 33 deletions(-)
 create mode 100644 lib/trace-cmd/plugins/Makefile
 create mode 100644 lib/trace-cmd/trace-plugin.c