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    Subject[PATCH v2 26/32] selftests/ftrace: Add trace_pipe testcase
    Date
    Add a simple testcase for trace_pipe which can consume
    ringbuffer.

    Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
    ---
    .../selftests/ftrace/test.d/00basic/trace_pipe.tc | 15 +++++++++++++++
    1 file changed, 15 insertions(+)
    create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc

    diff --git a/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc b/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc
    new file mode 100644
    index 000000000000..a7dd6fda487a
    --- /dev/null
    +++ b/tools/testing/selftests/ftrace/test.d/00basic/trace_pipe.tc
    @@ -0,0 +1,15 @@
    +#!/bin/sh
    +# SPDX-License-Identifier: GPL-2.0
    +# description: trace_pipe and trace_marker
    +
    +[ ! -f trace_marker ] && exit_unsupported
    +
    +echo "test input 1" > trace_marker
    +
    +: "trace interface never consume the ring buffer"
    +grep -q "test input 1" trace
    +grep -q "test input 1" trace
    +
    +: "trace interface never consume the ring buffer"
    +head -n 1 trace_pipe | grep -q "test input 1"
    +! grep -q "test input 1" trace
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