selftests/ftrace: Stop tracing while reading the trace file by default
Stop tracing while reading the trace file by default, to prevent the test results while checking it and to avoid taking a long time to check the result. If there is any testcase which wants to test the tracing while reading the trace file, please override this setting inside the test case. This also recovers the pause-on-trace when clean it up. Link: https://lkml.kernel.org/r/163529053143.690749.15365238954175942026.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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tools/testing/selftests/ftrace
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@ -428,7 +428,7 @@ for t in $TEST_CASES; do
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exit 1
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fi
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done
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(cd $TRACING_DIR; initialize_ftrace) # for cleanup
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(cd $TRACING_DIR; finish_ftrace) # for cleanup
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prlog ""
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prlog "# of passed: " `echo $PASSED_CASES | wc -w`
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@ -124,10 +124,22 @@ initialize_ftrace() { # Reset ftrace to initial-state
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[ -f uprobe_events ] && echo > uprobe_events
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[ -f synthetic_events ] && echo > synthetic_events
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[ -f snapshot ] && echo 0 > snapshot
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# Stop tracing while reading the trace file by default, to prevent
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# the test results while checking it and to avoid taking a long time
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# to check the result.
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[ -f options/pause-on-trace ] && echo 1 > options/pause-on-trace
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clear_trace
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enable_tracing
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}
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finish_ftrace() {
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initialize_ftrace
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# And recover it to default.
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[ -f options/pause-on-trace ] && echo 0 > options/pause-on-trace
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}
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check_requires() { # Check required files and tracers
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for i in "$@" ; do
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r=${i%:README}
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