Subject: Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver

From: Segher Boessenkool <[email-masked]>
Date: Sat, 19 May 2007 01:49:59 +0200

> I find it extremely silly to implement it as edge anyway. The EE line 
> is
> level triggered, and having a mix of edge and level on the same
> exception without a clean way to retrigger the DEC one other than
> waiting one tick is just causing trouble.

It isn't edge triggered, it just automatically clears the
decrementer exception condition at its source when taken
(on certain implementations -- others leave it to software
to clear it).

Segher