Re: 2.6.18 perfmon new code base + libpfm + pfmon

[Stephane Eranian <eranian@hpl.hp.com>]

Andrew,

On Wed, Sep 27, 2006 at 04:31:00PM -0700, Andrew Morton wrote:
> > 
> > Here is the summary of the various point raised by your review and the current
> > status. I am hoping to close all points by next release.
> > 
> > ...
> > 
> > [akpm]: use fget_light() in some place instead of fget()
> > 	- not sure understand when to use one versus the other
> >
> 
> They are always interchangeable.  fget_light() is simply an optimised,
> messier-to-use version.

What are exactly the assumptions of fget_light()?

> 
> >
> > ..
> >
> > [akpm]: carta_random32() should be in another header file
> > 	- yes, I know. Should I create a specific header file? I don't think random.h
> > 	  is meant for this.
> 
> I suppose so.  Or just stick the declaration into kernel.h.
> 
> I had a patch go past the other day which had a hand-rolled
> fast-but-not-very-good pseudo random number generator in it.  I couldn't
> remember where I'd seen one, and now I can't remember what patch it was
> that needed it.  Sigh.
> 
> Anyway, a standalone patch which adds that function into lib/whatever.c
> would be nice.

I will post a standalone patch for carta random. I can provide a standalone header
file in include/linux/carta_random.h. 

-- 
-Stephane