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From: Luiz Capitulino <lcapitulino@redhat.com>
To: linux-rt-users@vger.kernel.org
Cc: williams@redhat.com, jkacur@redhat.com
Subject: [PATCH 4/4] cyclictest: initialize 'stop' early
Date: Wed, 24 Feb 2016 15:49:41 -0500	[thread overview]
Message-ID: <1456346981-24032-5-git-send-email-lcapitulino@redhat.com> (raw)
In-Reply-To: <1456346981-24032-1-git-send-email-lcapitulino@redhat.com>

For some modes like MODE_CLOCK_NANOSLEEP, the clock
is already ticking when 'stop' is initialized. This
shouldn't matter, as this memset() should very fast
(I'd guess a few dozens or hundrends nanoseconds at
most?), but I also think there's no reason to do it
this late. So, initialize it along with everything
else.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 src/cyclictest/cyclictest.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c
index 34053c5..22c5403 100644
--- a/src/cyclictest/cyclictest.c
+++ b/src/cyclictest/cyclictest.c
@@ -793,6 +793,8 @@ void *timerthread(void *param)
 		tspec.it_interval = interval;
 	}
 
+	memset(&stop, 0, sizeof(stop));
+
 	memset(&schedp, 0, sizeof(schedp));
 	schedp.sched_priority = par->prio;
 	if (setscheduler(0, par->policy, &schedp))
@@ -832,10 +834,10 @@ void *timerthread(void *param)
 	tsnorm(&next);
 
 	if (duration) {
-		memset(&stop, 0, sizeof(stop)); /* grrr */
 		stop = now;
 		stop.tv_sec += duration;
 	}
+
 	if (par->mode == MODE_CYCLIC) {
 		if (par->timermode == TIMER_ABSTIME)
 			tspec.it_value = next;
-- 
2.1.0


      parent reply	other threads:[~2016-02-24 20:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-24 20:49 [PATCH 0/4] rt-tests: minor fixes Luiz Capitulino
2016-02-24 20:49 ` [PATCH 1/4] pip_stress: drop unused variable Luiz Capitulino
2016-03-16 22:00   ` John Kacur
2016-03-17 13:22     ` Luiz Capitulino
2016-02-24 20:49 ` [PATCH 2/4] rt-migrate-test: fix return code Luiz Capitulino
2016-03-16 22:14   ` John Kacur
2016-03-17 13:25     ` Luiz Capitulino
2016-02-24 20:49 ` [PATCH 3/4] don't use exit(-1) for failures Luiz Capitulino
2016-03-16 22:19   ` John Kacur
2016-02-24 20:49 ` Luiz Capitulino [this message]

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