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Commit 5a614ec8 authored by Namhyung Kim's avatar Namhyung Kim Committed by Shuah Khan
Browse files

kselftests/ftrace: Detect tracefs mount point 



Currently ftracetest assumes tracing directory is located under
$DEBUGFS/tracing.  But it's possible to mount tracefs directly without
debugfs.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarShuah Khan <shuahkh@osg.samsung.com>
parent f55532a0

tools/testing/selftests/ftrace/ftracetest

+7 −2
Original line number Diff line number Diff line
@@ -88,7 +88,12 @@ parse_opts() { # opts 


# Parameters

DEBUGFS_DIR=`grep debugfs /proc/mounts | cut -f2 -d' ' | head -1`

if [ -z "$DEBUGFS_DIR" ]; then

    TRACING_DIR=`grep tracefs /proc/mounts | cut -f2 -d' ' | head -1`

else

    TRACING_DIR=$DEBUGFS_DIR/tracing

fi



TOP_DIR=`absdir $0`

TEST_DIR=$TOP_DIR/test.d

TEST_CASES=`find_testcases $TEST_DIR`
@@ -102,7 +107,7 @@ parse_opts $* 
[ $DEBUG -ne 0 ] && set -x



# Verify parameters

if [ -z "$DEBUGFS_DIR" -o ! -d "$TRACING_DIR" ]; then

if [ -z "$TRACING_DIR" -o ! -d "$TRACING_DIR" ]; then

  errexit "No ftrace directory found"

fi