On Fri, Sep 10, 2004 at 12:23:28AM -0700, Chris Wedgwood wrote:
> On Fri, Sep 10, 2004 at 09:21:21AM +0200, Arjan van de Ven wrote:
> 
> > it used to be 8K unified for user context and softirq context and
> > hardirq context. Basically that got "split up" into 4k for user and
> > 4k each for the irq contexts.
> 
> you didn't answer my second question and that's not really an answer
> of why 4K is the 'right' value

because in 2.4 user context already only had 4Kb.  That makes it a basically
unchanged value.
(yes 2.4 had a 8k total but aobut 1.6k went to the task struct, and
somewhere about 2 and 3 Kb are used by irqs leaving a bit under 4Kb for user
context)