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yaml
---
r: 23563
b: refs/heads/master
c: c777ac5
h: refs/heads/master
i:
  23561: b0a4de9
  23559: f9f701b
v: v3
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Andrew Morton authored and Linus Torvalds committed Mar 25, 2006
1 parent 0e2daf5 commit a414601
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Showing 4 changed files with 56 additions and 50 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4cae59d2e85c1ee2ab1ee284db1945c5394cd965
refs/heads/master: c777ac5594f772ac760e02c3ac71d067616b579d
49 changes: 2 additions & 47 deletions trunk/include/linux/irq.h
Original file line number Diff line number Diff line change
Expand Up @@ -114,53 +114,8 @@ static inline void set_native_irq_info(int irq, cpumask_t mask)
#if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
extern cpumask_t pending_irq_cpumask[NR_IRQS];

static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
{
irq_desc_t *desc = irq_desc + irq;
unsigned long flags;

spin_lock_irqsave(&desc->lock, flags);
desc->move_irq = 1;
pending_irq_cpumask[irq] = mask;
spin_unlock_irqrestore(&desc->lock, flags);
}

static inline void
move_native_irq(int irq)
{
cpumask_t tmp;
irq_desc_t *desc = irq_descp(irq);

if (likely (!desc->move_irq))
return;

desc->move_irq = 0;

if (likely(cpus_empty(pending_irq_cpumask[irq])))
return;

if (!desc->handler->set_affinity)
return;

/* note - we hold the desc->lock */
cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map);

/*
* If there was a valid mask to work with, please
* do the disable, re-program, enable sequence.
* This is *not* particularly important for level triggered
* but in a edge trigger case, we might be setting rte
* when an active trigger is comming in. This could
* cause some ioapics to mal-function.
* Being paranoid i guess!
*/
if (unlikely(!cpus_empty(tmp))) {
desc->handler->disable(irq);
desc->handler->set_affinity(irq,tmp);
desc->handler->enable(irq);
}
cpus_clear(pending_irq_cpumask[irq]);
}
void set_pending_irq(unsigned int irq, cpumask_t mask);
void move_native_irq(int irq);

#ifdef CONFIG_PCI_MSI
/*
Expand Down
3 changes: 1 addition & 2 deletions trunk/kernel/irq/Makefile
Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@

obj-y := handle.o manage.o spurious.o
obj-y := handle.o manage.o spurious.o migration.o
obj-$(CONFIG_GENERIC_IRQ_PROBE) += autoprobe.o
obj-$(CONFIG_PROC_FS) += proc.o

52 changes: 52 additions & 0 deletions trunk/kernel/irq/migration.c
Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
#include <linux/irq.h>

#if defined(CONFIG_GENERIC_PENDING_IRQ)

void set_pending_irq(unsigned int irq, cpumask_t mask)
{
irq_desc_t *desc = irq_desc + irq;
unsigned long flags;

spin_lock_irqsave(&desc->lock, flags);
desc->move_irq = 1;
pending_irq_cpumask[irq] = mask;
spin_unlock_irqrestore(&desc->lock, flags);
}

void move_native_irq(int irq)
{
cpumask_t tmp;
irq_desc_t *desc = irq_descp(irq);

if (likely (!desc->move_irq))
return;

desc->move_irq = 0;

if (likely(cpus_empty(pending_irq_cpumask[irq])))
return;

if (!desc->handler->set_affinity)
return;

/* note - we hold the desc->lock */
cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map);

/*
* If there was a valid mask to work with, please
* do the disable, re-program, enable sequence.
* This is *not* particularly important for level triggered
* but in a edge trigger case, we might be setting rte
* when an active trigger is comming in. This could
* cause some ioapics to mal-function.
* Being paranoid i guess!
*/
if (unlikely(!cpus_empty(tmp))) {
desc->handler->disable(irq);
desc->handler->set_affinity(irq,tmp);
desc->handler->enable(irq);
}
cpus_clear(pending_irq_cpumask[irq]);
}

#endif

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