tracing: Decrement trace_array when bootconfig creates an instance
The trace_array_get_by_name() creates a ftrace instance and trace_array_put() is used to remove the reference. Even though the trace_array_get_by_name() creates the instance, it also adds a reference count to it, that prevents user space from removing it. As the bootconfig just creates the instance on boot up, it should still be used where it can be deleted by user space after boot. A trace_array_put() is required to let that happen. Also, change the documentation on trace_array_get_by_name() to make this not be so confusing. Link: https://lore.kernel.org/r/20200124205927.76128804@rorschach.local.home Fixes: 4f712a4d ("tracing/boot: Add instance node support") Acked-by:Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
parent
eba12ab7
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