linux-kernel - Re: [PATCH net-next v3 3/8] rust: time: Change output of Ktime's sub operation to Delta

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Message-ID: <CAH5fLgjKH_mQcAjwtAWAxnFYXvL6z24=Zcp-ou188-c=eQwPBw@mail.gmail.com>
Date: Wed, 16 Oct 2024 10:25:11 +0200
From: Alice Ryhl <aliceryhl@...gle.com>
To: FUJITA Tomonori <fujita.tomonori@...il.com>
Cc: netdev@...r.kernel.org, rust-for-linux@...r.kernel.org, andrew@...n.ch, 
	hkallweit1@...il.com, tmgross@...ch.edu, ojeda@...nel.org, 
	alex.gaynor@...il.com, gary@...yguo.net, bjorn3_gh@...tonmail.com, 
	benno.lossin@...ton.me, a.hindborg@...sung.com, anna-maria@...utronix.de, 
	frederic@...nel.org, tglx@...utronix.de, arnd@...db.de, jstultz@...gle.com, 
	sboyd@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 3/8] rust: time: Change output of Ktime's sub
 operation to Delta

On Wed, Oct 16, 2024 at 5:53 AM FUJITA Tomonori
<fujita.tomonori@...il.com> wrote:
>
> Change the output type of Ktime's subtraction operation from Ktime to
> Delta. Currently, the output is Ktime:
>
> Ktime = Ktime - Ktime
>
> It means that Ktime is used to represent timedelta. Delta is
> introduced so use it. A typical example is calculating the elapsed
> time:
>
> Delta = current Ktime - past Ktime;
>
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@...il.com>

So this means that you are repurposing Ktime as a replacement for
Instant rather than making both a Delta and Instant type? Okay. That
seems reasonable enough.

Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>

Alice