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    SubjectRe: [BUGFIX PATCH v3 2/4] selftests/ftrace: Fix ftrace test cases to check unsupported
    On Mon, 25 Nov 2019 15:57:09 +0900
    Masami Hiramatsu <mhiramat@kernel.org> wrote:

    > Since dynamic function tracer can be disabled, set_ftrace_filter
    > can be disappeared. Test cases which depends on it, must check
    > whether the set_ftrace_filter exists or not before testing
    > and if not, return as unsupported.
    >
    > Also, if the function tracer itself is disabled, we can not
    > set "function" to current_tracer. Test cases must check it
    > before testing, and return as unsupported.
    >
    > Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>

    Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

    -- Steve

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