Re: [PATCH] cpuset: Replace all instances of time_t with time64_t

[Zefan Li]

On 2015/11/26 3:01, Tejun Heo wrote:
> On Wed, Nov 25, 2015 at 04:16:55PM +0100, Arnd Bergmann wrote:
> > The following patch replaces all instances of time_t with time64_t i.e.
> > change the type used for representing time from 32-bit to 64-bit. All
> > 32-bit kernels to date use a signed 32-bit time_t type, which can only
> > represent time until January 2038. Since embedded systems running 32-bit
> > Linux are going to survive beyond that date, we have to change all
> > current uses, in a backwards compatible way.
> >
> > The patch also changes the function get_seconds() that returns a 32-bit
> > integer to ktime_get_seconds() that returns seconds as 64-bit integer.
> >
> > The patch changes the type of ticks from time_t to u32. We keep ticks as
> > 32-bits as the function uses 32-bit arithmetic which would prove less
> > expensive than 64-bit arithmetic and the function is expected to be
> > called atleast once every 32 seconds.
> >
> > Signed-off-by: Heena Sirwani <heenasirwani@xxxxxxxxx>
> > Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
>
> Applied to cgroup/for-4.5.

Acked

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