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SubjectRe: [PATCH] tracing/selftests: Add tests to test histogram sym and sym-offset modifiers
On Wed, 7 Jul 2021 12:14:51 -0400
Steven Rostedt <rostedt@goodmis.org> wrote:

> From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
>
> Add a test to the tracing selftests that will catch if the .sym or
> .sym-offset modifiers break in the future.
>
> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Looks good to me.

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>

Thank you!

> ---
> .../ftrace/test.d/trigger/trigger-hist.tc | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
> index 2950bfbc6fce..adae72665500 100644
> --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
> +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
> @@ -39,6 +39,24 @@ grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
>
> reset_trigger
>
> +echo "Test histogram with sym modifier"
> +
> +echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
> +for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
> +grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
> + fail "sym modifier on kmalloc call_site did not work"
> +
> +reset_trigger
> +
> +echo "Test histogram with sym-offset modifier"
> +
> +echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
> +for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
> +grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \
> + fail "sym-offset modifier on kmalloc call_site did not work"
> +
> +reset_trigger
> +
> echo "Test histogram with sort key"
>
> echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger
> --
> 2.31.1
>


--
Masami Hiramatsu <mhiramat@kernel.org>

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