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ftracetest: Add functions file that holds helper functions

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Created the file tools/testing/ftrace/test.d/functions that will
hold helper functions.

Current helper functions include:

 Add clear_trace() helper to reset the trace file

   Used as a descriptive name to show that "echo > trace" is clearing
   the trace file.

 Add disable/enable_tracing() helper calls

   Add calls that disable and enable tracing respectively by echoing
   0 or 1 into tracing_on.

 Add helper reset_tracer() function

    Add a helper function reset_tracer() that will clear the current_tracer
    (echo nop > current_tracer).

Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-11-03 15:36:35 -05:00 committed by Steven Rostedt
parent 52100d7f1c
commit ee3988c77e
2 changed files with 19 additions and 0 deletions
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3
tools/testing/selftests/ftrace/ftracetest
View File

@ -235,6 +235,9 @@ run_test() { # testfile
fi
}
# load in the helper functions
. $TEST_DIR/functions
# Main loop
for t in $TEST_CASES; do
run_test $t

16
tools/testing/selftests/ftrace/test.d/functions Normal file
View File

@ -0,0 +1,16 @@
clear_trace() { # reset trace output
echo > trace
}
disable_tracing() { # stop trace recording
echo 0 > tracing_on
}
enable_tracing() { # start trace recording
echo 1 > tracing_on
}
reset_tracer() { # reset the current tracer
echo nop > current_tracer
}