[LTP] [PATCH V7 05/19] syscalls/sched_rr_get_interval: Add support for time64 tests

Viresh Kumar
2020-07-03T07:26:09Z

On 03-07-20, 13:52, Yang Xu wrote:
> Hi Viresh
>
> > On 02-07-20, 15:06, Cyril Hrubis wrote:
> > > Btw, we may as well add a check that the value is consistent with
> > > /proc/sys/kernel/sched_rr_timeslice_ms.
>
> I guess cyril may want to add a check using TST_ASSERT_INT api like this
>
> TST_ASSERT_INT("/proc/sys/kernel/sched_rr_timeslice_ms", tst_ts_to_ms(tp));
>
> It is strange.
> On my machine, the two values are all 100. AFAIK, it has a bug (set in milliseconds but the result is shown in jiffies.) on old kernel whenCONFIG_HZ is not 1000. what kernel version do you test?

I am running an old kernel (4.4) and with 250 CONFIG_HZ.

> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=975e155ed8732cb81f55c021c441ae662dd040b5

I sent it to get included in stable kernels now.

https://lore.kernel.org/lkml/ffdfb849a11b9cd66e0aded2161869e36aec7fc0.1593757471.git.viresh.kumar@linaro.org/

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viresh