add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/trace/trace_irqsoff.c
..
..
@@ -228,7 +228,8 @@
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 {
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 	if (is_graph(iter->tr))
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 		graph_trace_open(iter);
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-
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+	else
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+		iter->private = NULL;
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 }
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 static void irqsoff_trace_close(struct trace_iterator *iter)