[PATCH 3/4] selftests: ftrace: Add -l/--logdir option

[Namhyung Kim]

In my virtual machine setup, running ftracetest failed on creating
LOG_DIR on a read-only filesystem.  It'd be convenient to provide an
option to specify a different directory as log directory.

Acked-by: Masami Hiramatsu <mhira...@kernel.org>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Shuah Khan <shua...@osg.samsung.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
 tools/testing/selftests/ftrace/ftracetest | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/ftrace/ftracetest 
b/tools/testing/selftests/ftrace/ftracetest
index 52e3c4df28d6..a8631d978725 100755
--- a/tools/testing/selftests/ftrace/ftracetest
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -16,6 +16,7 @@ echo "                -k|--keep  Keep passed test logs"
 echo "         -v|--verbose Increase verbosity of test messages"
 echo "         -vv        Alias of -v -v (Show all results in stdout)"
 echo "         -d|--debug Debug mode (trace all shell commands)"
+echo "         -l|--logdir <dir> Save logs on the <dir>"
 exit $1
 }
 
@@ -64,6 +65,10 @@ parse_opts() { # opts
       DEBUG=1
       shift 1
     ;;
+    --logdir|-l)
+      LOG_DIR=$2
+      shift 2
+    ;;
     *.tc)
       if [ -f "$1" ]; then
         OPT_TEST_CASES="$OPT_TEST_CASES `abspath $1`"
-- 
2.12.2