Can not free irq 0

Hi...

On Sun, Aug 28, 2011 at 03:59, Parmenides [off-list ref] wrote:

quoted

are you really sure? in my system (laptop with core duo cpu) it is
increased by around 1000-2000 every 2 seconds and AFAIK it is using
HPET.

Yes. How can I see the timer is i8253 or HPET? I just found 'timer' in
terms of the output of 'cat /proc/interrupts'.

try dumping the output of
"/sys/devices/system/clocksource/clocksource*/current_clocksource"

quoted

So maybe IMO free_irq() is causing your cpu referencing null
instruction...that might be due to free_irq is not checking whether it
is safe to delete a handler....

After enabling the RTC support, I have recompiled the kernel and try
to use the irq 8. But, it seems that the 'irq_request()' can not
register my hangler.

isn't that 8 occupied by rtc? and it might be occupied
exclusively....a.k.a you can put more handler there

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com