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    Subject[PATCH v6 03/21] selftests: ftrace: Add a testcase for string type with kprobe_event
    Date
    Add a testcase for string type with kprobe event.
    This tests good/bad syntax combinations and also
    the traced data is correct in several way.

    Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
    ---
    .../ftrace/test.d/kprobe/kprobe_args_string.tc | 46 ++++++++++++++++++++
    1 file changed, 46 insertions(+)
    create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc

    diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc
    new file mode 100644
    index 000000000000..5ba73035e1d9
    --- /dev/null
    +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc
    @@ -0,0 +1,46 @@
    +#!/bin/sh
    +# SPDX-License-Identifier: GPL-2.0
    +# description: Kprobe event string type argument
    +
    +[ -f kprobe_events ] || exit_unsupported # this is configurable
    +
    +echo 0 > events/enable
    +echo > kprobe_events
    +
    +case `uname -m` in
    +x86_64)
    + ARG2=%si
    + OFFS=8
    +;;
    +i[3456]86)
    + ARG2=%cx
    + OFFS=4
    +;;
    +aarch64)
    + ARG2=%x1
    + OFFS=8
    +;;
    +arm*)
    + ARG2=%r1
    + OFFS=4
    +;;
    +*)
    + echo "Please implement other architecture here"
    + exit_untested
    +esac
    +
    +: "Test get argument (1)"
    +echo "p:testprobe create_trace_kprobe arg1=+0(+0(${ARG2})):string" > kprobe_events
    +echo 1 > events/kprobes/testprobe/enable
    +! echo test >> kprobe_events
    +tail -n 1 trace | grep -qe "testprobe.* arg1=\"test\""
    +
    +echo 0 > events/kprobes/testprobe/enable
    +: "Test get argument (2)"
    +echo "p:testprobe create_trace_kprobe arg1=+0(+0(${ARG2})):string arg2=+0(+${OFFS}(${ARG2})):string" > kprobe_events
    +echo 1 > events/kprobes/testprobe/enable
    +! echo test1 test2 >> kprobe_events
    +tail -n 1 trace | grep -qe "testprobe.* arg1=\"test1\" arg2=\"test2\""
    +
    +echo 0 > events/enable
    +echo > kprobe_events
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