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selftests: ftrace: Use md5sum to take less time of checking logs

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Use md5sum so that it takes less time of checking
trace logs update. Since busybox tail/cat takes too
long time to read the trace log, this uses md5sum
to check whether trace log is updated or not.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Masami Hiramatsu 2017-06-27 19:28:32 +09:00 committed by Shuah Khan
parent d644437a1d
commit d87b29179a
1 changed files with 3 additions and 3 deletions
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6
tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc
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@ -103,11 +103,11 @@ if [ $on != "0" ]; then
fail "Tracing is not off"
fi
line1=`cat trace | tail -1`
csum1=`md5sum trace`
sleep $SLEEP_TIME
line2=`cat trace | tail -1`
csum2=`md5sum trace`
if [ "$line1" != "$line2" ]; then
if [ "$csum1" != "$csum2" ]; then
fail "Tracing file is still changing"
fi