linux-kernel - Re: [PATCH V4 18/20] rv/monitor: Add safe watchdog monitor

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Message-ID: <2abc864e-b8af-cc3f-b10d-bd450d443656@kernel.org>
Date:   Fri, 17 Jun 2022 18:17:59 +0200
From:   Daniel Bristot de Oliveira <bristot@...nel.org>
To:     Randy Dunlap <rdunlap@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     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>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-trace-devel@...r.kernel.org
Subject: Re: [PATCH V4 18/20] rv/monitor: Add safe watchdog monitor

On 6/16/22 22:57, Randy Dunlap wrote:
> Hi--
> 
> On 6/16/22 01:45, Daniel Bristot de Oliveira wrote:
>> diff --git a/kernel/trace/rv/Kconfig b/kernel/trace/rv/Kconfig
>> index 21f03fb3101a..b14ae63e792b 100644
>> --- a/kernel/trace/rv/Kconfig
>> +++ b/kernel/trace/rv/Kconfig
>> @@ -45,6 +45,16 @@ config RV_MON_WWNR
>>  	  illustrates the usage of per-task monitor. The model is
>>  	  broken on purpose: it serves to test reactors.
>>  
>> +config RV_MON_SAFE_WTD
>> +	select DA_MON_EVENTS_IMPLICIT
>> +	bool "Safety watchdog"
>> +	help
>> +	  Enable safe_wtd, this monitor observes the interaction
>> +	  between a user-space safety monitor and a watchdog device.
>> +
>> +	  For futher information see:
>> +	    Documentation/trace/rv/safety-monitor.rst
> I'm curious about what "WTD" means.
> 
> I see lots of WDT in drivers/watchdog/Kconfig
> (where it means WatchDog Timer AFAIK).

Yep, watchdog. I will add the long description right after the first WTD appearance.

-- Daniel

> thanks.