[PATCH 0/2] tracing: Add a way to have custom events in the tracefs directory

[Steven Rostedt]

We would like to have in production a way to record sched wakeups and
sched switch, and be able to save the information in a small file
with as much available as possible. Currently the wake up and sched switch
events are 36 and 64 bytes each (plus a 4 byte ring buffer event header).

By having a custom module tap into the sched switch and waking trace points
we can bring those events down to 16 and 14 bytes respectively.

Steven Rostedt (Google) (2):
      tracing: Allow custom events to be added to the tracefs directory
      tracing: Add sample code for custom trace events

----
 kernel/trace/trace_events.c               |   2 +
 samples/Kconfig                           |   8 +-
 samples/Makefile                          |   1 +
 samples/trace_events/Makefile             |   2 +
 samples/trace_events/trace_custom_sched.c | 280 ++++++++++++++++++++++++++++++
 5 files changed, 292 insertions(+), 1 deletion(-)
 create mode 100644 samples/trace_events/trace_custom_sched.c