Commit f26808ba authored Apr 08, 2018 by yuan linyu Committed by Steven Rostedt (VMware) Jul 03, 2018

tracing: Optimize trace_buffer_iter() logic

Simplify and optimize the logic in trace_buffer_iter() to use a conditional
operation instead of an if conditional.

Link: http://lkml.kernel.org/r/20180408113631.3947-1-cugyly@163.com



Signed-off-by: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

parent f9065872

kernel/trace/trace.h

+1 −3

Original line number	Diff line number	Diff line
		@@ -583,9 +583,7 @@ static __always_inline void trace_clear_recursion(int bit)
		static inline struct ring_buffer_iter *
		trace_buffer_iter(struct trace_iterator *iter, int cpu)
		{
		if (iter->buffer_iter && iter->buffer_iter[cpu])
		return iter->buffer_iter[cpu];
		return NULL;
		return iter->buffer_iter ? iter->buffer_iter[cpu] : NULL;
		}

		int tracer_init(struct tracer t, struct trace_array tr);

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