Re: [PATCH 2/3 V2] time: allow gcc to fold constants when using

From: Thomas Gleixner
Date: Wed Apr 22 2015 - 10:44:18 EST


On Wed, 22 Apr 2015, Nicholas Mc Guire wrote:

> On Wed, 22 Apr 2015, Thomas Gleixner wrote:
>
> > On Sun, 12 Apr 2015, Nicholas Mc Guire wrote:
> > > +extern unsigned long __msecs_to_jiffies(const unsigned int m);
> > > +#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
> > > +static inline unsigned long _msecs_to_jiffies(const unsigned int m)
> > > +{
> >
> > This should move the comments explaining the logic for each variant as
> > well.
>
> should be covered by [PATCH 3/3 V2] time: update msecs_to_jiffies doc and move to kernel-doc

Well, it's covered but it makes no sense patch wise.

> > 1) Factor out the code into inline helpers w/o adding anything
> >
> > 2) Add the __builtin_constant_p() check
> >
>
> so basically 1) is refactoring only and 2) is the actual
> change keept at a minimum or what is the intent of this split ?

Right.

Thanks,

tglx

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