Re: [4.14] Failing selftest timer/adjtick

Joerg Vehlow
2021-02-11T10:37:33Z

Hi,

On 2/10/2021 7:59 PM, Naresh Kamboju wrote:
> I have tested adjtick on arm64 juno-r2 device and it got pass
> and here is the test output on Linux version 4.14.221-rc1.
Interesting. Is this vanilla 4.14.221 or are there some o-e patches applied?
I just tried again on qemu arm with 4.14.222 from kernel.org stable tree
and still have failures like the one below every time I try. The failing
test step differs, but it always fails.

Each iteration takes about 15 seconds
Estimating tick (act: 9000 usec, -100000 ppm): 9000 usec, -100000 ppm
[OK]
Estimating tick (act: 9250 usec, -75000 ppm): 9250 usec, -75001 ppm    [OK]
Estimating tick (act: 9500 usec, -50000 ppm): 9501 usec, -49995 ppm    [OK]
Estimating tick (act: 9750 usec, -25000 ppm): 9750 usec, -25003 ppm    [OK]
Estimating tick (act: 10000 usec, 0 ppm): 9996 usec, -463 ppm [FAILED]
Bail out!
Pass 0 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0
1..0

Joerg