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Date:   Sat, 2 Dec 2017 09:27:46 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>, dipankar@...ibm.com,
        akpm@...ux-foundation.org,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Josh Triplett <josh@...htriplett.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        David Howells <dhowells@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Frédéric Weisbecker <fweisbec@...il.com>,
        oleg@...hat.com
Subject: Re: [PATCH tip/core/rcu 2/6] srcu: Change printk() %p to %pK

On Sat, Dec 2, 2017 at 3:41 AM, Paul E. McKenney
<paulmck@...ux.vnet.ibm.com> wrote:
> This commit changes the %p printk() in rcutorture to %pK.  This could
> be considered irrelevant, given that any user able to start rcutorture
> could inflict far heavier damage on the system, but it doesn't hurt to
> change it and doing so avoids script-generated noise.
>
> Reported-by: Tobin C. Harding <me@...in.cc>
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

Reviewed-by: Lai Jiangshan <jiangshanlai@...il.com>

> ---
>  kernel/rcu/srcutree.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
> index d5cea81378cc..81f2eb78c504 100644
> --- a/kernel/rcu/srcutree.c
> +++ b/kernel/rcu/srcutree.c
> @@ -386,7 +386,7 @@ void cleanup_srcu_struct(struct srcu_struct *sp)
>                 flush_delayed_work(&per_cpu_ptr(sp->sda, cpu)->work);
>         if (WARN_ON(rcu_seq_state(READ_ONCE(sp->srcu_gp_seq)) != SRCU_STATE_IDLE) ||
>             WARN_ON(srcu_readers_active(sp))) {
> -               pr_info("cleanup_srcu_struct: Active srcu_struct %p state: %d\n", sp, rcu_seq_state(READ_ONCE(sp->srcu_gp_seq)));
> +               pr_info("cleanup_srcu_struct: Active srcu_struct %pK state: %d\n", sp, rcu_seq_state(READ_ONCE(sp->srcu_gp_seq)));
>                 return; /* Caller forgot to stop doing call_srcu()? */
>         }
>         free_percpu(sp->sda);
> --
> 2.5.2
>

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