Re: [Y2038] Which type to use for timestamps: u64 or s64?

On Thursday 05 November 2015 08:41:11 Hans Verkuil wrote:

Hi Arnd,

We're redesigning the timestamp handling in the video4linux subsystem moving away from struct timeval to a single timestamp in ns (what ktime_get_ns() gives us). But I was wondering: ktime_get_ns() gives a s64, so should we use s64 as well as the timestamp type we'll eventually be returning to the user, or should we use u64?

The current patch series we made uses a u64, but I am now beginning to doubt that decision.

I would lean towards u64, but I don't think it really matters either way, especially since all the drivers should be using monotonic timestamps now.

Arnd