On Mon, 30 Mar 2015 16:21:40 +1100 Michael Ellerman <[email protected]> wrote:
> 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 <[email protected]> > --- Acked-by: Steven Rostedt <[email protected]> -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
