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H A D | ftrace.c | diff 84b2bc7fa005b99a06979673225dc2bb7de3fd91 Wed Jun 25 09:35:14 CDT 2014 Steven Rostedt (Red Hat) <rostedt@goodmis.org> ftrace/x86: Add call to ftrace_graph_is_dead() in function graph code
ftrace_stop() is going away as it disables parts of function tracing that affects users that should not be affected. But ftrace_graph_stop() is built on ftrace_stop(). Here's another example of killing all of function tracing because something went wrong with function graph tracing.
Instead of disabling all users of function tracing on function graph error, disable only function graph tracing. To do this, the arch code must call ftrace_graph_is_dead() before it implements function graph.
Link: http://lkml.kernel.org/r/53C54D18.3020602@zytor.com
Acked-by: H. Peter Anvin <hpa@linux.intel.com> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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