[LTP] [PATCH 2/2] syscalls: shift to time() if __NR_time not support

Li Wang
2020-11-24T07:57:47Z

Hi Xu,

Yang Xu <xuyang2018.jy@cn.fujitsu.com> wrote:

> I have seen this patchset, Can we use a function to check whether kernel
>

Yes, we can, I was even thinking to define a global MACRO can check
any syscall not only __NR_time.
(maybe we can achieve it for other tests)
But for this kind of case, I'd not suggest using that MACRO/function
to check __NR_time, because the test will perform twice at the moment
for the __NR_time syscall if it supporting(first time for support checking,
second time for real invoking).

Considering this is a time comparing test, that makes our seconds
more inaccurate to compare.

supports time syscall (like time_supported_by_kernel()) in setup
> and then we use time() - !return value in verify funtion?
>

Though we check the syscall in setup(), shouldn't we also export a variable
to record the result we checked? That does not make things be simple too.

--
Regards,
Li Wang
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