Messages in this thread | | | Date | Mon, 30 Mar 2015 17:36:33 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH] ftracetest: Cope properly with stack tracer not being enabled |
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On Mon, 30 Mar 2015 16:21:40 +1100 Michael Ellerman <mpe@ellerman.id.au> 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 <mpe@ellerman.id.au> > ---
Acked-by: Steven Rostedt <rostedt@goodmis.org>
-- Steve
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