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SubjectRe: [PATCH] selftests/ftrace: Correctly enable event in instance-event.tc
On Mon, 26 Jun 2023 08:11:44 +0800
Zheng Yejian <zhengyejian1@huawei.com> wrote:

> Function instance_set() expects to enable event 'sched_switch', so we
> should set 1 to its 'enable' file.
>
> Testcase passed after this patch:
> # ./ftracetest test.d/instances/instance-event.tc
> === Ftrace unit tests ===
> [1] Test creation and deletion of trace instances while setting an event
> [PASS]
>
> # of passed: 1
> # of failed: 0
> # of unresolved: 0
> # of untested: 0
> # of unsupported: 0
> # of xfailed: 0
> # of undefined(test bug): 0
>

Good catch!

Fixes: 91e6f1ce8657 ("ftracetest: Add instance created, delete, read and enable event test")

It seems this tests internally broken but the result is same because this disabled
error checking ('set +e').


> Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
> ---
> .../testing/selftests/ftrace/test.d/instances/instance-event.tc | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
> index 0eb47fbb3f44..42422e425107 100644
> --- a/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
> +++ b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc
> @@ -39,7 +39,7 @@ instance_read() {
>
> instance_set() {
> while :; do
> - echo 1 > foo/events/sched/sched_switch
> + echo 1 > foo/events/sched/sched_switch/enable
> done 2> /dev/null
> }
>
> --
> 2.25.1
>


--
Masami Hiramatsu (Google) <mhiramat@kernel.org>

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