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x86/irq: remove leftover code from NUMA_MIGRATE_IRQ_DESC

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The original feature of migrating irq_desc dynamic was too fragile
and was causing problems: it caused crashes on systems with lots of
cards with MSI-X when user-space irq-balancer was enabled.

We now have new patches that create irq_desc according to device
numa node. This patch removes the leftover bits of the dynamic balancer.

[ Impact: remove dead code ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <49F654AF.8000808@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
2009-04-27 17:58:23 -07:00
committed by Ingo Molnar
parent 9ec4fa271f
commit fcef5911c7
8 changed files with 9 additions and 93 deletions
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9
kernel/irq/handle.c
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@@ -458,11 +458,8 @@ unsigned int __do_IRQ(unsigned int irq)
/*
* No locking required for CPU-local interrupts:
*/
if (desc->chip->ack) {
if (desc->chip->ack)
desc->chip->ack(irq);
/* get new one */
desc = irq_remap_to_desc(irq, desc);
}
if (likely(!(desc->status & IRQ_DISABLED))) {
action_ret = handle_IRQ_event(irq, desc->action);
if (!noirqdebug)
@@ -473,10 +470,8 @@ unsigned int __do_IRQ(unsigned int irq)
}
spin_lock(&desc->lock);
if (desc->chip->ack) {
if (desc->chip->ack)
desc->chip->ack(irq);
desc = irq_remap_to_desc(irq, desc);
}
/*
* REPLAY is when Linux resends an IRQ that was dropped earlier
* WAITING is used by probe to mark irqs that are being tested