On Tue, 27 Jun 2017 19:28:32 +0900 Masami Hiramatsu <mhira...@kernel.org> wrote:
> 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. How much faster is md5sum? I can see this causing issues in other environments. -- Steve > > Signed-off-by: Masami Hiramatsu <mhira...@kernel.org> > --- > .../test.d/ftrace/func_traceonoff_triggers.tc | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git > a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc > b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc > index 9cf3852..7a9ab4f 100644 > --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc > +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc > @@ -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 >
