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SubjectRe: [PATCH] selftests/ftrace: event_triggers: wait longer for test_event_enable
On Sat, 5 Nov 2022 17:52:41 +0900
Masami Hiramatsu (Google) <mhiramat@kernel.org> wrote:

> Hi Yipeng,
>
> On Fri, 4 Nov 2022 10:09:31 +0800
> Yipeng Zou <zouyipeng@huawei.com> wrote:
>
> > In some platform, the schedule event may came slowly, delay 100ms can't
> > cover it.
> >
> > I was notice that on my board which running in low cpu_freq,and this
> > selftests allways gose fail.
>
> This looks good to me, since this can just extend the waiting time to 1 sec.
> (and most of the platforms have no effect)
>
> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
>

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Shuah,

Care to take this through your tree?

Thanks,

-- Steve


> Thank you!
>
> >
> > So maybe we can check more times here to wait longer.
> >
> > Fixes: 43bb45da82f9 ("selftests: ftrace: Add a selftest to test event enable/disable func trigger")
> > Signed-off-by: Yipeng Zou <zouyipeng@huawei.com>
> > ---
> > .../ftrace/test.d/ftrace/func_event_triggers.tc | 15 +++++++++++----
> > 1 file changed, 11 insertions(+), 4 deletions(-)
> >
> > diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
> > index 8d26d5505808..3eea2abf68f9 100644
> > --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
> > +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc
> > @@ -38,11 +38,18 @@ cnt_trace() {
> >
> > test_event_enabled() {
> > val=$1
> > + check_times=10 # wait for 10 * SLEEP_TIME at most
> >
> > - e=`cat $EVENT_ENABLE`
> > - if [ "$e" != $val ]; then
> > - fail "Expected $val but found $e"
> > - fi
> > + while [ $check_times -ne 0 ]; do
> > + e=`cat $EVENT_ENABLE`
> > + if [ "$e" == $val ]; then
> > + return 0
> > + fi
> > + sleep $SLEEP_TIME
> > + check_times=$((check_times - 1))
> > + done
> > +
> > + fail "Expected $val but found $e"
> > }
> >
> > run_enable_disable() {
> > --
> > 2.17.1
> >
>
>

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