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/linux-6.6.21/tools/testing/selftests/ftrace/
Dftracetest161 TRACING_DIR=`grep tracefs /proc/mounts | cut -f2 -d' ' | head -1`
162 if [ -z "$TRACING_DIR" ]; then
169 TRACING_DIR="/sys/kernel/tracing"
170 UMOUNT_DIR=${TRACING_DIR}
175 TRACING_DIR="/sys/kernel/debug/tracing"
176 UMOUNT_DIR=${TRACING_DIR}
182 TRACING_DIR="$DEBUGFS_DIR/tracing"
185 if [ ! -d "$TRACING_DIR" ]; then
210 if [ -z "$TRACING_DIR" -o ! -d "$TRACING_DIR" ]; then
415 (cd $TRACING_DIR; read PID _ < /proc/self/stat; set -e; set -x;
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