[PATCH v2 08/40] drm: Add a simple prime number generator

[Lukas Wunner]

On Fri, Dec 16, 2016 at 09:43:54AM +0000, Chris Wilson wrote:
> On Fri, Dec 16, 2016 at 10:31:17AM +0100, Lukas Wunner wrote:
> > On Fri, Dec 16, 2016 at 07:46:46AM +0000, Chris Wilson wrote:
> > > Prime numbers are interesting for testing components that use multiplies
> > > and divides, such as testing struct drm_mm alignment computations.
> > > 
> > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > > ---
> > >  drivers/gpu/drm/Kconfig                 |   4 +
> > >  drivers/gpu/drm/Makefile                |   1 +
> > >  drivers/gpu/drm/lib/drm_prime_numbers.c | 175 ++++++++++++++++++++++++++++++++
> > >  drivers/gpu/drm/lib/drm_prime_numbers.h |  10 ++
> > >  4 files changed, 190 insertions(+)
> > >  create mode 100644 drivers/gpu/drm/lib/drm_prime_numbers.c
> > >  create mode 100644 drivers/gpu/drm/lib/drm_prime_numbers.h
> > 
> > Hm, why not put this in lib/ ?  Don't see anything DRM-specific here
> > at first glance and this might be useful to others.  Or others might
> > come up with improvements and they'll be more likely to discover it
> > outside of DRM.
> 
> Because that is a 3+ month cycle before I can then apply the testcases,
> and without the testscases do you want the bugfixes?

Do patches for lib/ have to go through a different tree?
Don't think so, I've seen e.g. changes to lib/ucs2_string.c
go through the EFI tree.  It seems to me lib/ is sort of
free for all.


> If I put in in drm/lib then lift it, I can use it immediately and drop
> the local copy once merged.

That is also workable of course.  Anyway, it was just a suggestion.

Thanks,

Lukas