Commit bf6065b5 authored Jan 10, 2014 by Steven Rostedt (Red Hat) Committed by Steven Rostedt Feb 20, 2014

tracing: Pass trace_array to flag_changed callback



As options (flags) may affect instances instead of being global
the flag_changed() callbacks need to receive the trace_array descriptor
of the instance they will be modifying.

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

parent 8c1a49ae

kernel/trace/trace.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3393,7 +3393,7 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled)

		/* Give the tracer a chance to approve the change */
		if (tr->current_trace->flag_changed)
		if (tr->current_trace->flag_changed(tr->current_trace, mask, !!enabled))
		if (tr->current_trace->flag_changed(tr, mask, !!enabled))
		return -EINVAL;

		if (enabled)

kernel/trace/trace.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -358,7 +358,7 @@ struct tracer {
		int (set_flag)(struct trace_array tr,
		u32 old_flags, u32 bit, int set);
		/* Return 0 if OK with change, else return non-zero */
		int (flag_changed)(struct tracer tracer,
		int (flag_changed)(struct trace_array tr,
		u32 mask, int set);
		struct tracer *next;
		struct tracer_flags *flags;

kernel/trace/trace_irqsoff.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -572,8 +572,10 @@ static void irqsoff_function_set(int set)
		unregister_irqsoff_function(is_graph());
		}

		static int irqsoff_flag_changed(struct tracer *tracer, u32 mask, int set)
		static int irqsoff_flag_changed(struct trace_array *tr, u32 mask, int set)
		{
		struct tracer *tracer = tr->current_trace;

		if (mask & TRACE_ITER_FUNCTION)
		irqsoff_function_set(set);

kernel/trace/trace_sched_wakeup.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -179,8 +179,10 @@ static void wakeup_function_set(int set)
		unregister_wakeup_function(is_graph());
		}

		static int wakeup_flag_changed(struct tracer *tracer, u32 mask, int set)
		static int wakeup_flag_changed(struct trace_array *tr, u32 mask, int set)
		{
		struct tracer *tracer = tr->current_trace;

		if (mask & TRACE_ITER_FUNCTION)
		wakeup_function_set(set);