Re: [PATCH 0/4] nolibc: add support for the s390 platform

From: Paul E. McKenney
Date: Tue Jan 10 2023 - 11:32:52 EST


On Tue, Jan 10, 2023 at 05:12:49PM +0100, Willy Tarreau wrote:
> On Tue, Jan 10, 2023 at 06:53:34AM -0800, Paul E. McKenney wrote:
> > Here is one of them, based on both the fixes and Sven's s390 support.
> > Please let me know if you need any other combination.
>
> Thanks, here's the problem:
>
> > 0 getpid = 1 [OK]
> > 1 getppid = 0 [OK]
> > 3 gettid = 1 [OK]
> > 5 getpgid_self = 0 [OK]
> > 6 getpgid_bad = -1 ESRCH [OK]
> > 7 kill_0[ 1.940442] tsc: Refined TSC clocksource calibration: 2399.981 MHz
> > [ 1.942334] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x229825a5278, max_idle_ns: 440795306804 ns
> > = 0 [OK]
> > 8 kill_CONT = 0 [ 1.944987] clocksource: Switched to clocksource tsc
> > [OK]
> > 9 kill_BADPID = -1 ESRCH [OK]
> (...)
>
> It's clear that "grep -c ^[0-9].*OK" will not count all of them (2 are
> indeed missing).
>
> We could probably start with "quiet" but that would be against the
> principle of using this to troubleshoot issues. I think we just stick
> to the current search of "FAIL" and that as long as a success is
> reported and the number of successes is within the expected range
> that could be OK. At least I guess :-/

Huh. Would it make sense to delay the start of the nolibc testing by a
few seconds in order to avoid this sort of thing? Or would that cause
other problems?

Thanx, Paul