From: "Paul E. McKenney" <paulmck@linux.ibm.com>
To: Andrea Parri <andrea.parri@amarulasolutions.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Morten Rasmussen <morten.rasmussen@arm.com>,
joelaf@google.com, Vincent Guittot <vincent.guittot@linaro.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: Question about sched_setaffinity()
Date: Sat, 11 May 2019 17:39:15 -0700 [thread overview]
Message-ID: <20190512003915.GD3923@linux.ibm.com> (raw)
In-Reply-To: <20190511214520.GA3251@andrea>
On Sat, May 11, 2019 at 11:45:20PM +0200, Andrea Parri wrote:
> > > The below trace explain the issue. Some Paul person did it, see below.
> > > It's broken per construction :-)
> >
> > *facepalm* Hence the very strange ->cpus_allowed mask. I really
> > should have figured that one out.
> >
> > The fix is straightforward. I just added "rcutorture.shuffle_interval=0"
> > to the TRIVIAL.boot file, which stops rcutorture from shuffling its
> > kthreads around.
>
> I added the option to the file and I didn't reproduce the issue.
Thank you! May I add your Tested-by?
Thanx, Paul
> > Please accept my apologies for the hassle, and thank you for tracking
> > this down!!!
>
> Peter (echoing Paul): Thank you for pointing that shuffler out!
>
> Andrea
>
next prev parent reply other threads:[~2019-05-12 0:40 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-27 18:02 Question about sched_setaffinity() Paul E. McKenney
2019-04-30 10:03 ` Peter Zijlstra
2019-04-30 10:51 ` Paul E. McKenney
2019-04-30 11:55 ` Peter Zijlstra
2019-05-01 19:12 ` Paul E. McKenney
2019-05-01 19:16 ` Steven Rostedt
2019-05-01 20:27 ` Paul E. McKenney
2019-05-07 22:16 ` Paul E. McKenney
2019-05-09 17:36 ` Paul E. McKenney
2019-05-09 19:36 ` Paul E. McKenney
2019-05-10 12:08 ` Peter Zijlstra
2019-05-10 23:07 ` Paul E. McKenney
2019-05-11 21:45 ` Andrea Parri
2019-05-12 0:39 ` Paul E. McKenney [this message]
2019-05-12 1:05 ` Andrea Parri
2019-05-13 12:20 ` Paul E. McKenney
2019-05-13 15:37 ` Joel Fernandes
2019-05-13 15:53 ` Paul E. McKenney
2019-05-13 8:10 ` Peter Zijlstra
2019-05-13 12:19 ` Paul E. McKenney
2019-05-09 21:40 ` Andrea Parri
2019-05-09 21:56 ` Andrea Parri
2019-05-09 22:17 ` Paul E. McKenney
2019-05-10 6:32 ` Andrea Parri
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