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Groups > linux.kernel > #1238776 > unrolled thread
| Started by | Feng Wu <feng.wu@intel.com> |
|---|---|
| First post | 2015-10-03 10:40 +0200 |
| Last post | 2015-10-03 11:20 +0200 |
| Articles | 2 — 2 participants |
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[PATCH] genirq: Move irq_set_vcpu_affinity out of "#ifdef CONFIG_SMP" Feng Wu <feng.wu@intel.com> - 2015-10-03 10:40 +0200
Re: [PATCH] genirq: Move irq_set_vcpu_affinity out of "#ifdef CONFIG_SMP" Jiang Liu <jiang.liu@linux.intel.com> - 2015-10-03 11:20 +0200
| From | Feng Wu <feng.wu@intel.com> |
|---|---|
| Date | 2015-10-03 10:40 +0200 |
| Subject | [PATCH] genirq: Move irq_set_vcpu_affinity out of "#ifdef CONFIG_SMP" |
| Message-ID | <qfqwh-4YI-9@gated-at.bofh.it> |
irq_set_vcpu_affinity() is needed when CONFIG_SMP=n, so move the
definition out of "#ifdef CONFIG_SMP"
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Feng Wu <feng.wu@intel.com>
---
kernel/irq/manage.c | 62 ++++++++++++++++++++++++++---------------------------
1 file changed, 31 insertions(+), 31 deletions(-)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1c58655..90b378d 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -258,37 +258,6 @@ int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
}
EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
-/**
- * irq_set_vcpu_affinity - Set vcpu affinity for the interrupt
- * @irq: interrupt number to set affinity
- * @vcpu_info: vCPU specific data
- *
- * This function uses the vCPU specific data to set the vCPU
- * affinity for an irq. The vCPU specific data is passed from
- * outside, such as KVM. One example code path is as below:
- * KVM -> IOMMU -> irq_set_vcpu_affinity().
- */
-int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info)
-{
- unsigned long flags;
- struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
- struct irq_data *data;
- struct irq_chip *chip;
- int ret = -ENOSYS;
-
- if (!desc)
- return -EINVAL;
-
- data = irq_desc_get_irq_data(desc);
- chip = irq_data_get_irq_chip(data);
- if (chip && chip->irq_set_vcpu_affinity)
- ret = chip->irq_set_vcpu_affinity(data, vcpu_info);
- irq_put_desc_unlock(desc, flags);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(irq_set_vcpu_affinity);
-
static void irq_affinity_notify(struct work_struct *work)
{
struct irq_affinity_notify *notify =
@@ -424,6 +393,37 @@ setup_affinity(struct irq_desc *desc, struct cpumask *mask)
}
#endif
+/**
+ * irq_set_vcpu_affinity - Set vcpu affinity for the interrupt
+ * @irq: interrupt number to set affinity
+ * @vcpu_info: vCPU specific data
+ *
+ * This function uses the vCPU specific data to set the vCPU
+ * affinity for an irq. The vCPU specific data is passed from
+ * outside, such as KVM. One example code path is as below:
+ * KVM -> IOMMU -> irq_set_vcpu_affinity().
+ */
+int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info)
+{
+ unsigned long flags;
+ struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
+ struct irq_data *data;
+ struct irq_chip *chip;
+ int ret = -ENOSYS;
+
+ if (!desc)
+ return -EINVAL;
+
+ data = irq_desc_get_irq_data(desc);
+ chip = irq_data_get_irq_chip(data);
+ if (chip && chip->irq_set_vcpu_affinity)
+ ret = chip->irq_set_vcpu_affinity(data, vcpu_info);
+ irq_put_desc_unlock(desc, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(irq_set_vcpu_affinity);
+
void __disable_irq(struct irq_desc *desc)
{
if (!desc->depth++)
--
2.1.0
--
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| From | Jiang Liu <jiang.liu@linux.intel.com> |
|---|---|
| Date | 2015-10-03 11:20 +0200 |
| Subject | Re: [PATCH] genirq: Move irq_set_vcpu_affinity out of "#ifdef CONFIG_SMP" |
| Message-ID | <qfr8Z-5WV-9@gated-at.bofh.it> |
| In reply to | #1238776 |
On 2015/10/3 16:20, Feng Wu wrote:
> irq_set_vcpu_affinity() is needed when CONFIG_SMP=n, so move the
> definition out of "#ifdef CONFIG_SMP"
>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com>
> ---
> kernel/irq/manage.c | 62 ++++++++++++++++++++++++++---------------------------
> 1 file changed, 31 insertions(+), 31 deletions(-)
>
> diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
> index 1c58655..90b378d 100644
> --- a/kernel/irq/manage.c
> +++ b/kernel/irq/manage.c
> @@ -258,37 +258,6 @@ int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
> }
> EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
>
> -/**
> - * irq_set_vcpu_affinity - Set vcpu affinity for the interrupt
> - * @irq: interrupt number to set affinity
> - * @vcpu_info: vCPU specific data
> - *
> - * This function uses the vCPU specific data to set the vCPU
> - * affinity for an irq. The vCPU specific data is passed from
> - * outside, such as KVM. One example code path is as below:
> - * KVM -> IOMMU -> irq_set_vcpu_affinity().
> - */
> -int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info)
> -{
> - unsigned long flags;
> - struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
> - struct irq_data *data;
> - struct irq_chip *chip;
> - int ret = -ENOSYS;
> -
> - if (!desc)
> - return -EINVAL;
> -
> - data = irq_desc_get_irq_data(desc);
> - chip = irq_data_get_irq_chip(data);
> - if (chip && chip->irq_set_vcpu_affinity)
> - ret = chip->irq_set_vcpu_affinity(data, vcpu_info);
> - irq_put_desc_unlock(desc, flags);
> -
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(irq_set_vcpu_affinity);
> -
> static void irq_affinity_notify(struct work_struct *work)
> {
> struct irq_affinity_notify *notify =
> @@ -424,6 +393,37 @@ setup_affinity(struct irq_desc *desc, struct cpumask *mask)
> }
> #endif
>
> +/**
> + * irq_set_vcpu_affinity - Set vcpu affinity for the interrupt
> + * @irq: interrupt number to set affinity
> + * @vcpu_info: vCPU specific data
> + *
> + * This function uses the vCPU specific data to set the vCPU
> + * affinity for an irq. The vCPU specific data is passed from
> + * outside, such as KVM. One example code path is as below:
> + * KVM -> IOMMU -> irq_set_vcpu_affinity().
> + */
> +int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info)
> +{
> + unsigned long flags;
> + struct irq_desc *desc = irq_get_desc_lock(irq, &flags, 0);
> + struct irq_data *data;
> + struct irq_chip *chip;
> + int ret = -ENOSYS;
> +
> + if (!desc)
> + return -EINVAL;
> +
> + data = irq_desc_get_irq_data(desc);
> + chip = irq_data_get_irq_chip(data);
> + if (chip && chip->irq_set_vcpu_affinity)
> + ret = chip->irq_set_vcpu_affinity(data, vcpu_info);
> + irq_put_desc_unlock(desc, flags);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(irq_set_vcpu_affinity);
> +
> void __disable_irq(struct irq_desc *desc)
> {
> if (!desc->depth++)
>
--
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