Re: [PATCH] 2.4 preemption bug in bh_kmap_irq

[Marc-Christian Petersen <m.c.p@wolk-project.de>]

On Monday 14 April 2003 19:27, Joe Korty wrote:

Hi Joe,

> The below patch compiles and boots ide=nodma on my preempt 2.4 kernel
> on the one motherboard that had the problem.  Before this patch, the
> kernel would not even boot for that motherboard.  I also applied and
> test booted a pure 2.4.21-pre5 kernel with this patch.
> The patch implements my preference for simplicity, so you may want to
> take some other approach if maximal performance is what you want.
yep, and here is the problem ^^^^^^^^. Your patch seems ok but is horribly 
slow. I've tried it first the day you submitted the patch. It's even alot 
slower than w/o Preempt or CONFIG_PREEMPT to no.

My Celeron 1,3GHz with 512 MB RAM felt like good old 486SX/25 while doing,
for example, a kernel compilation :(

ciao, Marc