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Date: Wed, 4 Jan 2017 09:16:31 -0500
From: Steven Rostedt <rostedt@goodmis.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Enrico Mioso <mrkiko.rs@gmail.com>, linux-kernel@vger.kernel.org,
        Josh Triplett <josh@joshtriplett.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: Re: INFO: rcu_sched self-detected stall on CPU
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On Wed, 4 Jan 2017 05:46:08 -0800
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:

> I suggest enabling tracing for timers with a goal of working out why
> the rcu_sched task is not being awakened regularly -- during a grace
> period, it should be awakened every three jiffies or so (depending on
> the value of HZ).

Perhaps enable events for rcu, sched and irqs as well?

-- Steve