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[PATCH] 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>
---
 .../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
 

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[PATCH] selftests: ftrace: Use md5sum to take less time of checking logs Masami Hiramatsu <mhiramat@kernel.org> - 2017-06-27 12:30 +0200
  Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Shuah Khan <shuah@kernel.org> - 2017-06-28 16:10 +0200
  Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Steven Rostedt <rostedt@goodmis.org> - 2017-06-28 16:20 +0200
    Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Shuah Khan <shuah@kernel.org> - 2017-06-28 16:40 +0200
      Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Steven Rostedt <rostedt@goodmis.org> - 2017-06-28 17:00 +0200
        Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Shuah Khan <shuah@kernel.org> - 2017-06-28 17:40 +0200
          Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Shuah Khan <shuah@kernel.org> - 2017-06-29 22:30 +0200
            Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Steven Rostedt <rostedt@goodmis.org> - 2017-06-30 17:00 +0200
              Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Shuah Khan <shuah@kernel.org> - 2017-06-30 19:00 +0200
                Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Masami Hiramatsu <mhiramat@kernel.org> - 2017-07-03 06:20 +0200
  Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Denys Vlasenko <vda.linux@googlemail.com> - 2017-06-30 21:00 +0200
    Re: [PATCH] selftests: ftrace: Use md5sum to take less time of  checking logs Steven Rostedt <rostedt@goodmis.org> - 2017-06-30 21:10 +0200

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