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

[Joe Perches]

On Wed, 2015-04-22 at 14:00 +0200, 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.
[]
> It'd be nice to have this as two patches:
> 
> 1) Factor out the code into inline helpers w/o adding anything

It also might be nice to use a single static inline
with #ifdef blocks inside that inline rather than
have 3 separate static inline msecs_to_jiffies.

> 2) Add the __builtin_constant_p() check

And please add the usecs_to_jiffies variants in a
similar patch set.



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