linux-kernel - Re: [PATCH 2/3] cpufreq: merge arm_big

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Date:   Thu, 17 Oct 2019 15:00:22 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] cpufreq: merge arm_big_little and vexpress-spc

On 17-10-19, 10:26, Sudeep Holla wrote:
> On Thu, Oct 17, 2019 at 08:09:36AM +0530, Viresh Kumar wrote:
> > On 16-10-19, 12:03, Sudeep Holla wrote:
> > > arm_big_little cpufreq driver was designed as a generic big little
> > > driver that could be used by any platform and make use of bL switcher.
> > > Over years alternate solutions have be designed and merged to deal with
> > > bL/HMP systems like EAS.
> > >
> > > Also since no other driver made use of generic arm_big_little cpufreq
> > > driver except Vexpress SPC, we can merge them together as vexpress-spc
> > > driver used only on Vexpress TC2(CA15_CA7) platform.
> > >
> > > Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> > > ---
> > >  MAINTAINERS                            |   5 +-
> > >  drivers/cpufreq/Kconfig.arm            |  12 +-
> > >  drivers/cpufreq/Makefile               |   2 -
> > >  drivers/cpufreq/arm_big_little.c       | 658 ------------------------
> > >  drivers/cpufreq/arm_big_little.h       |  43 --
> > >  drivers/cpufreq/vexpress-spc-cpufreq.c | 661 ++++++++++++++++++++++++-
> > >  6 files changed, 652 insertions(+), 729 deletions(-)
> > >  delete mode 100644 drivers/cpufreq/arm_big_little.c
> > >  delete mode 100644 drivers/cpufreq/arm_big_little.h
> >
> > The delta produced here is enormous probably because you copy/pasted things. I
> > am wondering if using git mv to rename arm_big_little.c and then move spc bits
> > into it will make this delta smaller to review ?
> >
> 
> Yes, I did a quick try but slightly different order. As I need the final
> driver to be vexpress-spc-cpufreq.c, I am thinking of first merging
> vexpress-spc-cpufreq.c into arm_big_little.c and then renaming it back
> later. Does that sound good ?

Maybe git can produce short diff even if you do this in a single patch. But two
would be fine if that makes me review lesss stuff :)

> 
> drivers/cpufreq/arm_big_little.c       | 78 ++++++++++++++++++++------
> drivers/cpufreq/arm_big_little.h       | 43 --------------
> drivers/cpufreq/vexpress-spc-cpufreq.c | 71 -----------------------
> 6 files changed, 68 insertions(+), 145 deletions(-)
> delete mode 100644 drivers/cpufreq/arm_big_little.h
> delete mode 100644 drivers/cpufreq/vexpress-spc-cpufreq.c
> 
> If we first rename arm_big_little.c, then we need change the final name
> otherwise we end up with same delta as the new name file will be merged
> into vexpress-spc-cpufreq.c



-- 
viresh