On Wed, Oct 16, 2024 at 5:53 AM FUJITA Tomonori
[off-list ref] wrote:

Introduce a type representing a span of time. Define our own type
because `core::time::Duration` is large and could panic during
creation.

time::Ktime could be also used for time duration but timestamp and
timedelta are different so better to use a new type.

i64 is used instead of u64 to represent a span of time; some C drivers
uses negative Deltas and i64 is more compatible with Ktime using i64
too (e.g., ktime_[us|ms]_delta() APIs return i64 so we create Delta
object without type conversion.

Is there a reason that Delta wraps i64 directly instead of wrapping
the Ktime type? I'd like to see the reason in the commit message.

Alice