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Currently, when function_graph is started, it looks at the option funcgraph-args, and if it is set, it will enable tracing of the arguments. But if tracing is already running, and the user enables funcgraph-args, it will have no effect. Instead, it should enable argument tracing when it is enabled, even if it means disabling the function graph tracing for a short time in order to do the transition. Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Guo Ren <guoren@kernel.org> Cc: Donglin Peng <dolinux.peng@gmail.com> Cc: Zheng Yejian <zhengyejian@huaweicloud.com> Link: https://lore.kernel.org/20250227185822.978998710@goodmis.org Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>