For all ya BFS (brain fuck scheduler) lovers out there

[arne anka]

> every reboot?

i'd say yes.
since debugfs is in memory it will be lost when shutting down.
as pointed out already (by paul iirc), you need to insert the mount into  
fstab (and remember, there's a sensible mountpoint already below /sys/  
somewhere, check this thread) and do the echoing in a strupt script  
(rc.local springs to mind, since it is there for exactly this kind of  
things).