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

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Message-ID: <1507351853.12111.5.camel@gmx.de>
Date:   Sat, 07 Oct 2017 06:50:53 +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 19:38 +0200, Mike Galbraith wrote:
> 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...

testcases/open_posix_testsuite/conformance/interfaces/clock_settime/8-1.c:
 * Steps:
 * - get time T0
 * - in child:  set clock_nanosleep() to sleep for SLEEPSEC seconds
 * - in parent:  sleep SMALLTIME (< SLEEPSEC)
 * - in parent:  set time back to T0
 * - in child:  ensure time when clock_nanosleep() expires is within
 *   ACCEPTABLEDELTA of T0+(SLEEPSEC-SMALLTIME)
...
#define SLEEPSEC 5
#define SMALLTIME 2
#define ACCEPTABLEDELTA 1

homer:..debug/tracing # time chrt -o 0 /usr/local/ltp/conformance/interfaces/clock_settime/clock_settime_8-1.run-test
Test PASSED

real    0m5.002s
user    0m0.000s
sys     0m0.001s
homer:..debug/tracing # time chrt -f 1 /usr/local/ltp/conformance/interfaces/clock_settime/clock_settime_8-1.run-test
Ended too late.  1507351636 >> 1507351634
Test FAILED

real    0m7.002s
user    0m0.000s
sys     0m0.002s