Michael Ellerman a05ffdce71 ftracetest: Cope properly with stack tracer not being enabled ... If the stack tracer (CONFIG_STACK_TRACER) is disabled, the fgraph-filter-stack test blows chunks: [8] ftrace - function graph filters with stack tracer [FAIL] + reset_tracer + echo nop ./ftracetest: 19: /home/michael/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc: cannot create /proc/sys/kernel/stack_tracer_enabled: Directory nonexistent Fix it by checking if the proc file exists before echoing to it. With the patch applied it fails correctly with: [8] ftrace - function graph filters with stack tracer [UNSUPPORTED] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>		2015-03-31 10:15:36 -06:00
..
fault-injection	fault-injection: fix failcmd.sh warning	2012-07-31 18:42:38 -07:00
ktest	ktest: Place quotes around item variable	2015-02-03 15:45:13 -05:00
selftests	ftracetest: Cope properly with stack tracer not being enabled	2015-03-31 10:15:36 -06:00