linux-kernel - Re: [PATCH 6/8] connector/cn_proc: Protect send

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Message-ID: <20200520110314.GI317569@hirez.programming.kicks-ass.net>
Date:   Wed, 20 May 2020 13:03:14 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mike Galbraith <umgwanakikbuti@...il.com>,
        Evgeniy Polyakov <zbr@...emap.net>, netdev@...r.kernel.org
Subject: Re: [PATCH 6/8] connector/cn_proc: Protect send_msg() with a local
 lock

On Tue, May 19, 2020 at 10:19:10PM +0200, Sebastian Andrzej Siewior wrote:
> @@ -40,10 +41,11 @@ static struct cb_id cn_proc_event_id = { CN_IDX_PROC, CN_VAL_PROC };
>  
>  /* proc_event_counts is used as the sequence number of the netlink message */
>  static DEFINE_PER_CPU(__u32, proc_event_counts) = { 0 };
> +static DEFINE_LOCAL_LOCK(send_msg_lock);

Put it in a struct ?