[LAU] OpenMoko FreeRunner and Real Time Kernel

[Ken Restivo]

On Mon, Jul 14, 2008 at 11:48:18PM +0100, Rui Nuno Capela wrote:
> Florian Schmidt wrote:
> > Hi Ken,
> > 
> > On Monday 14 July 2008, Ken Restivo wrote:
> >> 	Linux version 2.6.21-rt1-1 (root at asus) (gcc version 4.1.2 20061115
> >                              ^^^^^The version string shows it though :)
> > 
> >> (prerelease) (Debian 4.1.1-21)) #1 SMP PREEMPT Thu May 3 00:41:41 PDT 2007
> >>
> >>
> >> No "RT" there, but I definitely know it is an RT kernel, because I patched
> >> it myself.
> > 
> 
> i'm afraid you're betting on the wrong horse :)
> 
> you could have patched it alright (no doubt about that) and also set 
> EXTRAVERSION with the "-rt1-1" suffix, but, unless you've set 
> CONFIG_PREEMPT_RT=y you're not running a full-preeept RT kernel, that's 
> for sure.
> 
> afaict, when one talks about a RT linux kernel, he/she's meaning that 
> CONFIG_PREEMPT_RT=y and then, trust me, the "RT" will appear in the 
> `uname -a` line output.
> 

On my laptop, CONFIG_PREEMPT_RT is set, but no "RT" appears in the uname -a line.

It's definitely a RT kernel. I've been running it for a year now.

-ken