Is there anybody use rt-preempt patch on freescale ppc successfully?

[huangxiaoguang at datangmobile.cn]

Hello,all
 
I applied linux 2.6.21 and Ingo's patch 2.6.21-rt1 on ppc8260, It can't be complied successfully 
when I used ARCH=ppc, and the patch can work when using ARCH=powerpc. 
 
When using powerpc, the maximum latency of interrupt and preemption are all increased, about 5ms,
regardless patch was applied or not.
 
Does the rt patch not fit ppc, or I used it incorrect?
 
Thanks.
 
 
 
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20070605/37d7bd63/attachment.htm