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    Subject[PATCH v5 33/34] selftests/ftrace: Add a test case for repeating register/unregister fprobe
    Date
    From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

    This test case repeats define and undefine the fprobe dynamic event to
    ensure that the fprobe does not cause any issue with such operations.

    Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
    ---
    .../test.d/dynevent/add_remove_fprobe_repeat.tc | 19 +++++++++++++++++++
    1 file changed, 19 insertions(+)
    create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc

    diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc
    new file mode 100644
    index 000000000000..b4ad09237e2a
    --- /dev/null
    +++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe_repeat.tc
    @@ -0,0 +1,19 @@
    +#!/bin/sh
    +# SPDX-License-Identifier: GPL-2.0
    +# description: Generic dynamic event - Repeating add/remove fprobe events
    +# requires: dynamic_events "f[:[<group>/][<event>]] <func-name>[%return] [<args>]":README
    +
    +echo 0 > events/enable
    +echo > dynamic_events
    +
    +PLACE=$FUNCTION_FORK
    +REPEAT_TIMES=64
    +
    +for i in `seq 1 $REPEAT_TIMES`; do
    + echo "f:myevent $PLACE" >> dynamic_events
    + grep -q myevent dynamic_events
    + test -d events/fprobes/myevent
    + echo > dynamic_events
    +done
    +
    +clear_trace

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