linux-kernel - Re: [ANNOUNCE] v4.11.12-rt13

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Date:   Fri, 06 Oct 2017 19:38:08 +0200
From:   Mike Galbraith <efault@....de>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Anna-Maria Gleixner <anna-maria@...utronix.de>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v4.11.12-rt13

On Fri, 2017-10-06 at 15:33 +0200, Mike Galbraith wrote:
> 
> I'll run full ltp again, make sure there are no new failure deltas.

Haven't done that yet, but I have checked all of the reported failures.

time-hrtimer:-Use-softirq-based-wakeups-for-non-RT-threads.patch fixes
clock_settime_8-1.run-test, hrtimer:-Update-offset-for-soft-bases.patch 
fixes the rest.

However...

homer:..debug/tracing # /usr/local/ltp/conformance/interfaces/clock_settime/clock_settime_8-1.run-test
Test PASSED
homer:..debug/tracing # chrt -f 1 /usr/local/ltp/conformance/interfaces/clock_settime/clock_settime_8-1.run-test
Ended too late.  1507308976 >> 1507308974
Test FAILED

That's a bit troubling.  No earlier kernel, rt or not, cares about
policy.  Either now getting a NAK is less than wonderful, but
SCHED_FIFO gets a NAK while SCHED_OTHER walks away with an ACK?

	-Mike