linux-kernel - Re: [PATCH 3/3] rcu/trace: Add name of the source for gp

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Date:   Thu, 18 Jun 2020 22:07:18 -0400
From:   Joel Fernandes <joel@...lfernandes.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ingo Molnar <mingo@...hat.com>,
        Josh Triplett <josh@...htriplett.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        "Paul E. McKenney" <paulmck@...nel.org>, rcu@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>,
        "Uladzislau Rezki (Sony)" <urezki@...il.com>
Subject: Re: [PATCH 3/3] rcu/trace: Add name of the source for gp_seq to
 prevent confusion

On Thu, Jun 18, 2020 at 09:36:41PM -0400, Joel Fernandes (Google) wrote:
[...]
> @@ -2019,7 +2019,7 @@ static int __noreturn rcu_gp_kthread(void *unused)
>  			cond_resched_tasks_rcu_qs();
>  			WRITE_ONCE(rcu_state.gp_activity, jiffies);
>  			WARN_ON(signal_pending(current));
> -			trace_rcu_grace_period(rcu_state.name, rcu_state.gp_seq,
> +			trace_rcu_grace_period(rcu_state.name, TPS("rsp"), rcu_state.gp_seq,
>  					       TPS("reqwaitsig"));
>  		}
>  
> @@ -2263,7 +2263,7 @@ int rcutree_dying_cpu(unsigned int cpu)
>  		return 0;
>  
>  	blkd = !!(rnp->qsmask & rdp->grpmask);
> -	trace_rcu_grace_period(rcu_state.name, READ_ONCE(rnp->gp_seq),
> +	trace_rcu_grace_period(rcu_state.name, TPS("rsp"), READ_ONCE(rnp->gp_seq),

This should be: TPS("rnp")  :-(

Happy to fix it up and resend if you'd like. Thanks!