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Commit 50512ab5 authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt
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tracing: Convert tracer->enabled to counter 



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: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 6b450d25

kernel/trace/trace.c

+3 −3
Original line number Diff line number Diff line
@@ -3916,7 +3916,7 @@ static void tracing_set_nop(struct trace_array *tr) 
	if (tr->current_trace == &nop_trace)

		return;

	

	tr->current_trace->enabled = false;

	tr->current_trace->enabled--;



	if (tr->current_trace->reset)

		tr->current_trace->reset(tr);
@@ -3962,7 +3962,7 @@ static int tracing_set_tracer(struct trace_array *tr, const char *buf) 


	trace_branch_disable();



	tr->current_trace->enabled = false;

	tr->current_trace->enabled--;



	if (tr->current_trace->reset)

		tr->current_trace->reset(tr);
@@ -4006,7 +4006,7 @@ static int tracing_set_tracer(struct trace_array *tr, const char *buf) 
	}



	tr->current_trace = t;

	tr->current_trace->enabled = true;

	tr->current_trace->enabled++;

	trace_branch_enable(tr);

 out:

	mutex_unlock(&trace_types_lock);

kernel/trace/trace.h

+1 −1
Original line number Diff line number Diff line
@@ -362,8 +362,8 @@ struct tracer { 
						u32 mask, int set);

	struct tracer		*next;

	struct tracer_flags	*flags;

	int			enabled;

	bool			print_max;

	bool			enabled;

	bool			allow_instances;

#ifdef CONFIG_TRACER_MAX_TRACE

	bool			use_max_tr;