tracing: Convert tracer->enabled to counter
authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>
Tue, 14 Jan 2014 13:52:35 +0000 (08:52 -0500)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 20 Feb 2014 17:13:17 +0000 (12:13 -0500)
As tracers will soon be used by instances, the tracer enabled field
needs to be converted to a counter instead of a boolean.
This counter is protected by the trace_types_lock mutex.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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