Re: [PATCH v2] platform: x86: Support Turbo Boost Max 3.0 for non HWP systems

From: Tim Chen
Date: Thu Jan 19 2017 - 14:47:16 EST


On Thu, 2017-01-19 at 12:38 +0200, Andy Shevchenko wrote:
> On Wed, 2017-01-18 at 14:40 -0800, Tim Chen wrote:
> >
> > On Wed, 2017-01-18 at 10:29 -0800, Srinivas Pandruvada wrote:
> > >
> > > Â
> > > +
> > > +static int itmt_legacy_cpu_online(unsigned int cpu)
> > > +{
> > > + static u32 max_highest_perf = 0, min_highest_perf =
> > > U32_MAX;
> > Should the max_highest_perf and min_highest_perf be defined and
> > initialized
> > outside this function? ÂOtherwise the max and min value will be lost
> > and reset
> > each time a new cpu comes online.
> >
> > We will always find max_highest_perf == min_highest_perf.
> Perhaps you missed static keyword there. Their behaviour is the same as
> for global variables, i.e. the initial value assigned only at the
> beginning.
>

Yes I did miss the static modifier. Sorry for the noise.

Tim