Keep the FC6 kernel at 2.6.20 or move it to 2.6.21?

[Dave Jones]

On Mon, Apr 30, 2007 at 12:04:28PM +0200, dragoran wrote:

 > > Most of the scary stuff (new libata pata drivers etc), we'd keep off,
 > > so things shouldn't be too bad.  The timer changes for tickless are
 > > probably the only remaining scary thing. For that we have a few choices.
 > > - Leave NO_HZ off.
 > >   Feature parity with FC6, though the code has still changed, and
 > >   may still find regressions. Probably the safest option.
 > > - Turn NO_HZ on.
 > >   Early preview of F7 features, saves power yadayada, may find new
 > >   bugs. (Gets us that nice fuzzy 'f6 bugs are f7 bugs' bonus though)
 > >   
 > what kind of bugs would this trigger? crashes? or "only" some weird 
 > timer/clock issues?

all sorts of things rely on timers, so it could manifest itself in
any number of ways.

 > if this is done does this also mean that we can backport x86_64 tickless 
 > for F7 when its ready?

Given its still not upstream, it'll likely be a while before it lands in FC6.
It'll get backported to F7 first after GA, but first it needs to land
in Linus' tree.

	Dave

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