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authorYinghai Lu <yinghai@kernel.org>2009-04-27 18:00:38 -0700
committerIngo Molnar <mingo@elte.hu>2009-04-28 12:21:17 +0200
commit85ac16d033370caf6f48d743c8dc8103700f5cc5 (patch)
tree04a73af31c07a8ad29780b777b3f9d041fa236fa /drivers
parent57b150cce8e004ddd36330490a68bfb59b7271e9 (diff)
x86/irq: change irq_desc_alloc() to take node instead of cpu
This simplifies the node awareness of the code. All our allocators only deal with a NUMA node ID locality not with CPU ids anyway - so there's no need to maintain (and transform) a CPU id all across the IRq layer. v2: keep move_irq_desc related [ Impact: cleanup, prepare IRQ code to be NUMA-aware ] 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> Cc: Jeremy Fitzhardinge <jeremy@goop.org> LKML-Reference: <49F65536.2020300@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/intr_remapping.c15
-rw-r--r--drivers/xen/events.c2
2 files changed, 7 insertions, 10 deletions
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index f5e0ea724a6f..9eff36a293e0 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -23,15 +23,12 @@ struct irq_2_iommu {
};
#ifdef CONFIG_GENERIC_HARDIRQS
-static struct irq_2_iommu *get_one_free_irq_2_iommu(int cpu)
+static struct irq_2_iommu *get_one_free_irq_2_iommu(int node)
{
struct irq_2_iommu *iommu;
- int node;
-
- node = cpu_to_node(cpu);
iommu = kzalloc_node(sizeof(*iommu), GFP_ATOMIC, node);
- printk(KERN_DEBUG "alloc irq_2_iommu on cpu %d node %d\n", cpu, node);
+ printk(KERN_DEBUG "alloc irq_2_iommu on node %d\n", node);
return iommu;
}
@@ -48,7 +45,7 @@ static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
return desc->irq_2_iommu;
}
-static struct irq_2_iommu *irq_2_iommu_alloc_cpu(unsigned int irq, int cpu)
+static struct irq_2_iommu *irq_2_iommu_alloc_node(unsigned int irq, int node)
{
struct irq_desc *desc;
struct irq_2_iommu *irq_iommu;
@@ -56,7 +53,7 @@ static struct irq_2_iommu *irq_2_iommu_alloc_cpu(unsigned int irq, int cpu)
/*
* alloc irq desc if not allocated already.
*/
- desc = irq_to_desc_alloc_cpu(irq, cpu);
+ desc = irq_to_desc_alloc_node(irq, node);
if (!desc) {
printk(KERN_INFO "can not get irq_desc for %d\n", irq);
return NULL;
@@ -65,14 +62,14 @@ static struct irq_2_iommu *irq_2_iommu_alloc_cpu(unsigned int irq, int cpu)
irq_iommu = desc->irq_2_iommu;
if (!irq_iommu)
- desc->irq_2_iommu = get_one_free_irq_2_iommu(cpu);
+ desc->irq_2_iommu = get_one_free_irq_2_iommu(node);
return desc->irq_2_iommu;
}
static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
{
- return irq_2_iommu_alloc_cpu(irq, boot_cpu_id);
+ return irq_2_iommu_alloc_node(irq, cpu_to_node(boot_cpu_id));
}
#else /* !CONFIG_SPARSE_IRQ */
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 33389880279b..be437c2bc942 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -335,7 +335,7 @@ static int find_unbound_irq(void)
if (irq == nr_irqs)
panic("No available IRQ to bind to: increase nr_irqs!\n");
- desc = irq_to_desc_alloc_cpu(irq, 0);
+ desc = irq_to_desc_alloc_node(irq, 0);
if (WARN_ON(desc == NULL))
return -1;