linux-kernel - Re: [PATCH V6 02/16] rv: Add runtime reactors interface

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Message-ID: <Ytlmu9xYkXXwIhip@geo.homenetwork>
Date:   Thu, 21 Jul 2022 22:46:19 +0800
From:   Tao Zhou <tao.zhou@...ux.dev>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Marco Elver <elver@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Gabriele Paoloni <gpaoloni@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Clark Williams <williams@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-trace-devel@...r.kernel.org, Tao Zhou <tao.zhou@...ux.dev>
Subject: Re: [PATCH V6 02/16] rv: Add runtime reactors interface

On Tue, Jul 19, 2022 at 07:27:07PM +0200, Daniel Bristot de Oliveira wrote:

> diff --git a/include/linux/rv.h b/include/linux/rv.h
> index b6bcdb4888e6..4f5b70eee557 100644
> --- a/include/linux/rv.h
> +++ b/include/linux/rv.h
> @@ -7,6 +7,12 @@
>  #ifndef _LINUX_RV_H
>  #define _LINUX_RV_H
>  
> +struct rv_reactor {
> +	char			*name;
> +	char			*description;
> +	void			(*react)(char *msg);
> +};

Like the definition of name and description in structure rv_monitor,
use `const char *` for name and description.

> +#ifdef CONFIG_RV_REACTORS
> +struct rv_reactor_def {
> +	struct list_head	list;
> +	struct rv_reactor	*reactor;
> +	/* protected by the monitor interface lock */
> +	int			counter;

Not see the `counter` be used(inc/dec).

> +};
> +#endif