* irqbalance+O(1)-sched
@ 2002-05-07 15:03 J.A. Magallon
2002-05-07 15:08 ` irqbalance+O(1)-sched William Lee Irwin III
2002-05-07 15:13 ` irqbalance+O(1)-sched William Lee Irwin III
0 siblings, 2 replies; 3+ messages in thread
From: J.A. Magallon @ 2002-05-07 15:03 UTC (permalink / raw)
To: Lista Linux-Kernel; +Cc: Robert Love, Ingo Molnar
Hi all...
I am trying to mix the irqbalance patch on top of the O1-scheduler
to use it on a dual P4 box.
Everything mix easy but this piece of code in irqbalance:
int idle_cpu(int cpu)
{
return cpu_curr(cpu) == idle_task(cpu);
}
2.4.18 defines it as
sched.c:#define idle_task(cpu) (init_tasks[cpu_number_map(cpu)])
...
sched.c:#define idle_task(cpu) (&init_task)
but O1 kills it.
Any syggestion on hwo to implement idle_cpu() on top of O1 ?
Thanks
--
J.A. Magallon # Let the source be with you...
mailto:jamagallon@able.es
Mandrake Linux release 8.3 (Cooker) for i586
Linux werewolf 2.4.19-pre8-jam1 #1 SMP mar may 7 01:51:45 CEST 2002 i686
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: irqbalance+O(1)-sched
2002-05-07 15:03 irqbalance+O(1)-sched J.A. Magallon
@ 2002-05-07 15:08 ` William Lee Irwin III
2002-05-07 15:13 ` irqbalance+O(1)-sched William Lee Irwin III
1 sibling, 0 replies; 3+ messages in thread
From: William Lee Irwin III @ 2002-05-07 15:08 UTC (permalink / raw)
To: J.A. Magallon; +Cc: Lista Linux-Kernel, Robert Love, Ingo Molnar
On Tue, May 07, 2002 at 05:03:57PM +0200, J.A. Magallon wrote:
> Everything mix easy but this piece of code in irqbalance:
> int idle_cpu(int cpu)
> {
> return cpu_curr(cpu) == idle_task(cpu);
> }
> 2.4.18 defines it as
> sched.c:#define idle_task(cpu) (init_tasks[cpu_number_map(cpu)])
> ...
> sched.c:#define idle_task(cpu) (&init_task)
> but O1 kills it.
> Any syggestion on hwo to implement idle_cpu() on top of O1 ?
int idle_cpu(int cpu)
{
return cpu_curr(cpu) == cpu_rq(cpu)->idle;
}
Cheers,
Bill
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: irqbalance+O(1)-sched
2002-05-07 15:03 irqbalance+O(1)-sched J.A. Magallon
2002-05-07 15:08 ` irqbalance+O(1)-sched William Lee Irwin III
@ 2002-05-07 15:13 ` William Lee Irwin III
1 sibling, 0 replies; 3+ messages in thread
From: William Lee Irwin III @ 2002-05-07 15:13 UTC (permalink / raw)
To: J.A. Magallon; +Cc: Lista Linux-Kernel, Robert Love, Ingo Molnar
On Tue, May 07, 2002 at 05:03:57PM +0200, J.A. Magallon wrote:
> I am trying to mix the irqbalance patch on top of the O1-scheduler
> to use it on a dual P4 box.
> Everything mix easy but this piece of code in irqbalance:
> int idle_cpu(int cpu)
> {
> return cpu_curr(cpu) == idle_task(cpu);
> }
> 2.4.18 defines it as
> sched.c:#define idle_task(cpu) (init_tasks[cpu_number_map(cpu)])
> ...
> sched.c:#define idle_task(cpu) (&init_task)
> but O1 kills it.
> Any syggestion on hwo to implement idle_cpu() on top of O1 ?
Another quick one might be
#define idle_task(cpu) (cpu_rq(cpu)->idle)
which leaves idle_cpu() unchanged.
Cheers,
Bill
^ permalink raw reply [flat|nested] 3+ messages in thread
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