Re: [PATCH RFC v3 6/7] gpu: nova-core: add basic timer device

[Daniel Brooks <db48x@db48x.net>]

Alexandre Courbot <acourbot@nvidia.com> writes:

> +impl Add<Duration> for Timestamp {
> +    type Output = Self;
> +
> +    fn add(mut self, rhs: Duration) -> Self::Output {
> +        let mut nanos = rhs.as_nanos();
> +        while nanos > u64::MAX as u128 {
> +            self.0 = self.0.wrapping_add(nanos as u64);
> +            nanos -= u64::MAX as u128;
> +        }
> +
> +        Timestamp(self.0.wrapping_add(nanos as u64))
> +    }
> +}

Perhaps I missed something, but couldn’t you simplify this method like
this:

    fn add(mut self, rhs: Duration) -> Self::Output {
        let stamp = self.0 as u128;
        Timestamp(stamp.wrapping_add(rhs.as_nanos()) as u64)
    }

db48x