Hi,
On Mon, Jul 06, 2015 at 07:04:07PM +0530, Afzal Mohammed wrote:
> On Mon, Jul 06, 2015 at 01:44:30PM +0200, Peter Zijlstra wrote:
> > On Mon, Jul 06, 2015 at 08:14:37AM +0530, Afzal Mohammed wrote:
> > > The hunk being removed here
> > > would not make a difference to it as this is on scaled weight > u32.
> > > And pre-"9dbdb15553239" doesn't seem to have logical equivalent of hunk
> > > removed here either.
> >
> > -ENOPARSE.
>
> Reading 9dbdb15553239 ("sched/fair: Rework sched_fair time
> accounting") again, realized that I am wrong on this, that was
> referring to the below statement removed in that commit,
>
> if (likely(weight > (1UL << SCHED_LOAD_RESOLUTION)))
> tmp = (u64)delta_exec * scale_load_down(weight);
>
> earlier came to a reasoning that as scale_load_down(weight) was not
> separately typecasted, value above u32 would be discarded, that non
> parsable statement meant that weight > u32 was not considered. Since
> cast has precedence over multiply, that statement of mine was wrong.
I take that back, consider as though I have not mentioned anything
above :)
Regards
Afzal
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