Re: [RFC V2 17/21] watchdog/dev: Add tracepoints
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- Subject: Re: [RFC V2 17/21] watchdog/dev: Add tracepoints
- From: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>
- Date: Thu, 17 Feb 2022 17:27:09 +0100
- Cc: Jonathan Corbet <corbet@xxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Marco Elver <elver@xxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxx>, Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>, Gabriele Paoloni <gpaoloni@xxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Clark Williams <williams@xxxxxxxxxx>, "linux-doc@xxxxxxxxxxxxxxx" <linux-doc@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-trace-devel@xxxxxxxxxxxxxxx" <linux-trace-devel@xxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>
- In-reply-to: <96f418b4-0ba8-01fe-ead0-2028bfc42560@sony.com>
- References: <cover.1644830251.git.bristot@kernel.org> <e67874c8b676ea8dfe38679efa25363889bb1e76.1644830251.git.bristot@kernel.org> <96f418b4-0ba8-01fe-ead0-2028bfc42560@sony.com>
- User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0
Hi Peter
On 2/16/22 17:01, Peter.Enderborg@xxxxxxxx wrote:
> On 2/14/22 11:45, Daniel Bristot de Oliveira wrote:
>> Add a set of tracepoints, enabling the observability of the watchdog
>> device interactions with user-space.
>>
>> The events are:
>> watchdog:watchdog_open
>> watchdog:watchdog_close
>> watchdog:watchdog_start
>> watchdog:watchdog_stop
>> watchdog:watchdog_set_timeout
>> watchdog:watchdog_ping
>> watchdog:watchdog_nowayout
>> watchdog:watchdog_set_keep_alive
>> watchdog:watchdog_keep_alive
>
> Some watchdogs have a bark functionality, I think it should be event for that too.
>
I understand. The problems is that I do not see the bark abstraction in the
watchdog_dev layer.
In the case I am investigating (the safety_monitor/safety_app) the bark is
outside of the "OS" view, it is an hardware action - like. shutdown.
Am I missing something? Thoughts?
-- Daniel
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