Re: [patch] voluntary-preempt-2.6.8-rc2-O2

[Matt Heler]

Ingo,

I get the following error below on with your patch applied on stock 
2.6.8-rc2 ...

  CC      kernel/softirq.o
  CC      kernel/hardirq.o
kernel/hardirq.c:51: error: conflicting types for 'generic_handle_IRQ_event'
include/linux/irq.h:78: error: previous declaration of 
'generic_handle_IRQ_event' was here
kernel/hardirq.c:51: error: conflicting types for 'generic_handle_IRQ_event'
include/linux/irq.h:78: error: previous declaration of 
'generic_handle_IRQ_event' was here
make[1]: *** [kernel/hardirq.o] Error 1
make: *** [kernel] Error 2


Matt H.


On Sunday 01 August 2004 12:30 pm, Ingo Molnar wrote:
> here's the latest version of the voluntary-preempt patch:
>
>   http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8-rc2-O2
>
> this patch is mainly a stabilization effort. I dropped the irq-threads
> code added in -M5 and rewrote it from scratch based on -L2 - it is
> simpler and should be more robust.
>
> The same /proc/irq/* configuration switches are still present, but i
> added the following additional rule: if _any_ handler of a given IRQ is
> marked as non-threaded then all handlers will be executed non-threaded
> as well.
>
> E.g. if you have the following handlers on IRQ 10:
>
>  10:      11584   IO-APIC-level  eth0, eth1, eth2
>
> and you change /proc/irq/16/eth1/threaded from 1 to 0 then the eth0 and
> eth2 handlers will be executed non-threaded as well. (This rule only
> enforces what the hardware enforces anyway, none of the previous patches
> allowed true separation of these handlers.)
>
> i also changed the IO-APIC level-triggered code to be robust when
> redirection is done. The noapic workaround should not be necessary
> anymore.
>
> the keyboard lockups are now hopefully all gone too - i've tested
> IO-APIC and non-IO-APIC setups as well and NumLock/ScrollLock works fine
> in all sorts of workloads.
>
> Let me know if you still have any problems.
>
> 	Ingo
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