Re: [PATCH bpf] selftests/bpf: Relax time_tai test for equal timestamps in tai_forward

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On Tue Dec 12 2023, YiFei Zhu wrote:
>> > diff --git a/tools/testing/selftests/bpf/prog_tests/time_tai.c b/tools/testing/selftests/bpf/prog_tests/time_tai.c
>> > index a31119823666..f45af1b0ef2c 100644
>> > --- a/tools/testing/selftests/bpf/prog_tests/time_tai.c
>> > +++ b/tools/testing/selftests/bpf/prog_tests/time_tai.c
>> > @@ -56,7 +56,7 @@ void test_time_tai(void)
>> >       ASSERT_NEQ(ts2, 0, "tai_ts2");
>> >
>> >       /* TAI is moving forward only */
>> > -     ASSERT_GT(ts2, ts1, "tai_forward");
>> > +     ASSERT_GE(ts2, ts1, "tai_forward");
>>
>> Can we guard the new change with arm64 specific macro?
>
> Problem with this is that I'm not sure what other architectures could
> be affected. AFAICT from the test, what it cares about is that time is
> moving forwards rather than going backwards, so I thought GE is good
> enough for what it's testing for.

Yes, exactly. The time must not go backwards. Checking for GE is
fine. Thanks for fixing this.

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