From: Arnd Bergmann <arnd@arndb.de>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Linux Media Mailing List <linux-media@vger.kernel.org>,
y2038@lists.linaro.org, Junghak Sung <jh1009.sung@samsung.com>
Subject: Re: Which type to use for timestamps: u64 or s64?
Date: Thu, 05 Nov 2015 09:36:24 +0100 [thread overview]
Message-ID: <10717379.s8aWAKUxAs@wuerfel> (raw)
In-Reply-To: <563B0817.2060508@xs4all.nl>
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
next prev parent reply other threads:[~2015-11-05 8:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-05 7:41 Which type to use for timestamps: u64 or s64? Hans Verkuil
2015-11-05 8:36 ` Arnd Bergmann [this message]
2015-11-05 9:05 ` [Y2038] " Hans Verkuil
2015-11-05 9:25 ` Arnd Bergmann
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