linux-kernel - Re: [PATCH v3 12/13] rv: Add deadline monitors

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Message-ID: <874ipfbay7.fsf@yellow.woof>
Date: Thu, 25 Dec 2025 08:35:12 +0700
From: Nam Cao <namcao@...utronix.de>
To: Gabriele Monaco <gmonaco@...hat.com>, linux-kernel@...r.kernel.org,
 Steven Rostedt <rostedt@...dmis.org>, Gabriele Monaco
 <gmonaco@...hat.com>, Jonathan Corbet <corbet@....net>, Masami Hiramatsu
 <mhiramat@...nel.org>, linux-trace-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org
Cc: Tomas Glozar <tglozar@...hat.com>, Juri Lelli <jlelli@...hat.com>, Clark
 Williams <williams@...hat.com>, John Kacur <jkacur@...hat.com>
Subject: Re: [PATCH v3 12/13] rv: Add deadline monitors

Gabriele Monaco <gmonaco@...hat.com> writes:
> Add the deadline monitors collection to validate the deadline scheduler,
> both for deadline tasks and servers.
>
> The currently implemented monitors are:
> * throttle:
>     validate dl entities are throttled when they use up their runtime
> * nomiss:
>     validate dl entities run to completion before their deadiline
>
> Signed-off-by: Gabriele Monaco <gmonaco@...hat.com>

There are some helper functions that I am a bit uncomfortable with
(e.g. pi_of, is_dl_boosted, dl_is_implicit, ...) because they are
relying on implementation details of deadline scheduler which can be
changed. So ideally this patch should have an Ack from the scheduler people.

I can't comment on the model, since I don't know scheduler. But from RV
perspective:
Reviewed-by: Nam Cao <namcao@...utronix.de>