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* [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap
@ 2012-06-20  9:00 ` Dong Aisheng
  0 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-06-20  9:00 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-arm-kernel, grant.likely, tglx, benh

From: Dong Aisheng <dong.aisheng@linaro.org>

The revmap type should be linear for irq_domain_add_linear function.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
---
 kernel/irq/irqdomain.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 3e4ea85..cb83554 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -219,7 +219,7 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
 
 /**
- * irq_domain_add_linear() - Allocate and register a legacy revmap irq_domain.
+ * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
  * @of_node: pointer to interrupt controller's device tree node.
  * @size: Number of interrupts in the domain.
  * @ops: map/unmap domain callbacks
-- 
1.7.0.4



^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap
@ 2012-06-20  9:00 ` Dong Aisheng
  0 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-06-20  9:00 UTC (permalink / raw)
  To: linux-arm-kernel

From: Dong Aisheng <dong.aisheng@linaro.org>

The revmap type should be linear for irq_domain_add_linear function.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
---
 kernel/irq/irqdomain.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 3e4ea85..cb83554 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -219,7 +219,7 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
 
 /**
- * irq_domain_add_linear() - Allocate and register a legacy revmap irq_domain.
+ * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
  * @of_node: pointer to interrupt controller's device tree node.
  * @size: Number of interrupts in the domain.
  * @ops: map/unmap domain callbacks
-- 
1.7.0.4

^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
  2012-06-20  9:00 ` Dong Aisheng
@ 2012-06-20  9:00   ` Dong Aisheng
  -1 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-06-20  9:00 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-arm-kernel, grant.likely, tglx, benh

From: Dong Aisheng <dong.aisheng@linaro.org>

There're two copies of irq_desc initialization code, reform them into
an irq_desc_initialize function to call.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
---
 kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
 1 files changed, 28 insertions(+), 23 deletions(-)

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 192a302..e29db67 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -131,34 +131,43 @@ static void free_masks(struct irq_desc *desc)
 static inline void free_masks(struct irq_desc *desc) { }
 #endif
 
-static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
+static inline int irq_desc_initialize(struct irq_desc *desc,
+					int irq, int node, struct module *owner)
 {
-	struct irq_desc *desc;
-	gfp_t gfp = GFP_KERNEL;
-
-	desc = kzalloc_node(sizeof(*desc), gfp, node);
-	if (!desc)
-		return NULL;
 	/* allocate based on nr_cpu_ids */
 	desc->kstat_irqs = alloc_percpu(unsigned int);
 	if (!desc->kstat_irqs)
-		goto err_desc;
+		return -ENOMEM;
 
-	if (alloc_masks(desc, gfp, node))
-		goto err_kstat;
+	if (alloc_masks(desc, GFP_KERNEL, node)) {
+		kfree(desc->kstat_irqs);
+		return -ENOMEM;
+	}
 
 	raw_spin_lock_init(&desc->lock);
 	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
 
 	desc_set_defaults(irq, desc, node, owner);
 
-	return desc;
+	return 0;
+}
 
-err_kstat:
-	free_percpu(desc->kstat_irqs);
-err_desc:
-	kfree(desc);
-	return NULL;
+static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
+{
+	struct irq_desc *desc;
+	int ret;
+
+	desc = kzalloc_node(sizeof(*desc), GFP_KERNEL, node);
+	if (!desc)
+		return NULL;
+
+	ret = irq_desc_initialize(desc, irq, node, owner);
+	if (ret) {
+		kfree(desc);
+		return NULL;
+	}
+
+	return desc;
 }
 
 static void free_desc(unsigned int irq)
@@ -260,13 +269,9 @@ int __init early_irq_init(void)
 	desc = irq_desc;
 	count = ARRAY_SIZE(irq_desc);
 
-	for (i = 0; i < count; i++) {
-		desc[i].kstat_irqs = alloc_percpu(unsigned int);
-		alloc_masks(&desc[i], GFP_KERNEL, node);
-		raw_spin_lock_init(&desc[i].lock);
-		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
-		desc_set_defaults(i, &desc[i], node, NULL);
-	}
+	for (i = 0; i < count; i++)
+		irq_desc_initialize(desc, irq, node, NULL);
+
 	return arch_early_irq_init();
 }
 
-- 
1.7.0.4



^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
@ 2012-06-20  9:00   ` Dong Aisheng
  0 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-06-20  9:00 UTC (permalink / raw)
  To: linux-arm-kernel

From: Dong Aisheng <dong.aisheng@linaro.org>

There're two copies of irq_desc initialization code, reform them into
an irq_desc_initialize function to call.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
---
 kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
 1 files changed, 28 insertions(+), 23 deletions(-)

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 192a302..e29db67 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -131,34 +131,43 @@ static void free_masks(struct irq_desc *desc)
 static inline void free_masks(struct irq_desc *desc) { }
 #endif
 
-static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
+static inline int irq_desc_initialize(struct irq_desc *desc,
+					int irq, int node, struct module *owner)
 {
-	struct irq_desc *desc;
-	gfp_t gfp = GFP_KERNEL;
-
-	desc = kzalloc_node(sizeof(*desc), gfp, node);
-	if (!desc)
-		return NULL;
 	/* allocate based on nr_cpu_ids */
 	desc->kstat_irqs = alloc_percpu(unsigned int);
 	if (!desc->kstat_irqs)
-		goto err_desc;
+		return -ENOMEM;
 
-	if (alloc_masks(desc, gfp, node))
-		goto err_kstat;
+	if (alloc_masks(desc, GFP_KERNEL, node)) {
+		kfree(desc->kstat_irqs);
+		return -ENOMEM;
+	}
 
 	raw_spin_lock_init(&desc->lock);
 	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
 
 	desc_set_defaults(irq, desc, node, owner);
 
-	return desc;
+	return 0;
+}
 
-err_kstat:
-	free_percpu(desc->kstat_irqs);
-err_desc:
-	kfree(desc);
-	return NULL;
+static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
+{
+	struct irq_desc *desc;
+	int ret;
+
+	desc = kzalloc_node(sizeof(*desc), GFP_KERNEL, node);
+	if (!desc)
+		return NULL;
+
+	ret = irq_desc_initialize(desc, irq, node, owner);
+	if (ret) {
+		kfree(desc);
+		return NULL;
+	}
+
+	return desc;
 }
 
 static void free_desc(unsigned int irq)
@@ -260,13 +269,9 @@ int __init early_irq_init(void)
 	desc = irq_desc;
 	count = ARRAY_SIZE(irq_desc);
 
-	for (i = 0; i < count; i++) {
-		desc[i].kstat_irqs = alloc_percpu(unsigned int);
-		alloc_masks(&desc[i], GFP_KERNEL, node);
-		raw_spin_lock_init(&desc[i].lock);
-		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
-		desc_set_defaults(i, &desc[i], node, NULL);
-	}
+	for (i = 0; i < count; i++)
+		irq_desc_initialize(desc, irq, node, NULL);
+
 	return arch_early_irq_init();
 }
 
-- 
1.7.0.4

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
  2012-06-20  9:00   ` Dong Aisheng
@ 2012-07-06  9:18     ` Dong Aisheng
  -1 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-07-06  9:18 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-arm-kernel, grant.likely, tglx, benh

On Wed, Jun 20, 2012 at 05:00:31PM +0800, Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> There're two copies of irq_desc initialization code, reform them into
> an irq_desc_initialize function to call.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> ---
>  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
>  1 files changed, 28 insertions(+), 23 deletions(-)
> 
Ping...

Regards
Dong Aisheng

> diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
> index 192a302..e29db67 100644
> --- a/kernel/irq/irqdesc.c
> +++ b/kernel/irq/irqdesc.c
> @@ -131,34 +131,43 @@ static void free_masks(struct irq_desc *desc)
>  static inline void free_masks(struct irq_desc *desc) { }
>  #endif
>  
> -static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
> +static inline int irq_desc_initialize(struct irq_desc *desc,
> +					int irq, int node, struct module *owner)
>  {
> -	struct irq_desc *desc;
> -	gfp_t gfp = GFP_KERNEL;
> -
> -	desc = kzalloc_node(sizeof(*desc), gfp, node);
> -	if (!desc)
> -		return NULL;
>  	/* allocate based on nr_cpu_ids */
>  	desc->kstat_irqs = alloc_percpu(unsigned int);
>  	if (!desc->kstat_irqs)
> -		goto err_desc;
> +		return -ENOMEM;
>  
> -	if (alloc_masks(desc, gfp, node))
> -		goto err_kstat;
> +	if (alloc_masks(desc, GFP_KERNEL, node)) {
> +		kfree(desc->kstat_irqs);
> +		return -ENOMEM;
> +	}
>  
>  	raw_spin_lock_init(&desc->lock);
>  	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
>  
>  	desc_set_defaults(irq, desc, node, owner);
>  
> -	return desc;
> +	return 0;
> +}
>  
> -err_kstat:
> -	free_percpu(desc->kstat_irqs);
> -err_desc:
> -	kfree(desc);
> -	return NULL;
> +static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
> +{
> +	struct irq_desc *desc;
> +	int ret;
> +
> +	desc = kzalloc_node(sizeof(*desc), GFP_KERNEL, node);
> +	if (!desc)
> +		return NULL;
> +
> +	ret = irq_desc_initialize(desc, irq, node, owner);
> +	if (ret) {
> +		kfree(desc);
> +		return NULL;
> +	}
> +
> +	return desc;
>  }
>  
>  static void free_desc(unsigned int irq)
> @@ -260,13 +269,9 @@ int __init early_irq_init(void)
>  	desc = irq_desc;
>  	count = ARRAY_SIZE(irq_desc);
>  
> -	for (i = 0; i < count; i++) {
> -		desc[i].kstat_irqs = alloc_percpu(unsigned int);
> -		alloc_masks(&desc[i], GFP_KERNEL, node);
> -		raw_spin_lock_init(&desc[i].lock);
> -		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
> -		desc_set_defaults(i, &desc[i], node, NULL);
> -	}
> +	for (i = 0; i < count; i++)
> +		irq_desc_initialize(desc, irq, node, NULL);
> +
>  	return arch_early_irq_init();
>  }
>  
> -- 
> 1.7.0.4
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
@ 2012-07-06  9:18     ` Dong Aisheng
  0 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-07-06  9:18 UTC (permalink / raw)
  To: linux-arm-kernel

On Wed, Jun 20, 2012 at 05:00:31PM +0800, Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> There're two copies of irq_desc initialization code, reform them into
> an irq_desc_initialize function to call.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> ---
>  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
>  1 files changed, 28 insertions(+), 23 deletions(-)
> 
Ping...

Regards
Dong Aisheng

> diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
> index 192a302..e29db67 100644
> --- a/kernel/irq/irqdesc.c
> +++ b/kernel/irq/irqdesc.c
> @@ -131,34 +131,43 @@ static void free_masks(struct irq_desc *desc)
>  static inline void free_masks(struct irq_desc *desc) { }
>  #endif
>  
> -static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
> +static inline int irq_desc_initialize(struct irq_desc *desc,
> +					int irq, int node, struct module *owner)
>  {
> -	struct irq_desc *desc;
> -	gfp_t gfp = GFP_KERNEL;
> -
> -	desc = kzalloc_node(sizeof(*desc), gfp, node);
> -	if (!desc)
> -		return NULL;
>  	/* allocate based on nr_cpu_ids */
>  	desc->kstat_irqs = alloc_percpu(unsigned int);
>  	if (!desc->kstat_irqs)
> -		goto err_desc;
> +		return -ENOMEM;
>  
> -	if (alloc_masks(desc, gfp, node))
> -		goto err_kstat;
> +	if (alloc_masks(desc, GFP_KERNEL, node)) {
> +		kfree(desc->kstat_irqs);
> +		return -ENOMEM;
> +	}
>  
>  	raw_spin_lock_init(&desc->lock);
>  	lockdep_set_class(&desc->lock, &irq_desc_lock_class);
>  
>  	desc_set_defaults(irq, desc, node, owner);
>  
> -	return desc;
> +	return 0;
> +}
>  
> -err_kstat:
> -	free_percpu(desc->kstat_irqs);
> -err_desc:
> -	kfree(desc);
> -	return NULL;
> +static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
> +{
> +	struct irq_desc *desc;
> +	int ret;
> +
> +	desc = kzalloc_node(sizeof(*desc), GFP_KERNEL, node);
> +	if (!desc)
> +		return NULL;
> +
> +	ret = irq_desc_initialize(desc, irq, node, owner);
> +	if (ret) {
> +		kfree(desc);
> +		return NULL;
> +	}
> +
> +	return desc;
>  }
>  
>  static void free_desc(unsigned int irq)
> @@ -260,13 +269,9 @@ int __init early_irq_init(void)
>  	desc = irq_desc;
>  	count = ARRAY_SIZE(irq_desc);
>  
> -	for (i = 0; i < count; i++) {
> -		desc[i].kstat_irqs = alloc_percpu(unsigned int);
> -		alloc_masks(&desc[i], GFP_KERNEL, node);
> -		raw_spin_lock_init(&desc[i].lock);
> -		lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
> -		desc_set_defaults(i, &desc[i], node, NULL);
> -	}
> +	for (i = 0; i < count; i++)
> +		irq_desc_initialize(desc, irq, node, NULL);
> +
>  	return arch_early_irq_init();
>  }
>  
> -- 
> 1.7.0.4
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap
  2012-06-20  9:00 ` Dong Aisheng
@ 2012-07-11 14:07   ` Grant Likely
  -1 siblings, 0 replies; 12+ messages in thread
From: Grant Likely @ 2012-07-11 14:07 UTC (permalink / raw)
  To: Dong Aisheng, linux-kernel; +Cc: linux-arm-kernel, tglx, benh

On Wed, 20 Jun 2012 17:00:30 +0800, Dong Aisheng <b29396@freescale.com> wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> The revmap type should be linear for irq_domain_add_linear function.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>

Applied, thanks.

g.

> ---
>  kernel/irq/irqdomain.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index 3e4ea85..cb83554 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -219,7 +219,7 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
>  EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
>  
>  /**
> - * irq_domain_add_linear() - Allocate and register a legacy revmap irq_domain.
> + * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
>   * @of_node: pointer to interrupt controller's device tree node.
>   * @size: Number of interrupts in the domain.
>   * @ops: map/unmap domain callbacks
> -- 
> 1.7.0.4
> 
> 

-- 
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.

^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap
@ 2012-07-11 14:07   ` Grant Likely
  0 siblings, 0 replies; 12+ messages in thread
From: Grant Likely @ 2012-07-11 14:07 UTC (permalink / raw)
  To: linux-arm-kernel

On Wed, 20 Jun 2012 17:00:30 +0800, Dong Aisheng <b29396@freescale.com> wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> The revmap type should be linear for irq_domain_add_linear function.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>

Applied, thanks.

g.

> ---
>  kernel/irq/irqdomain.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index 3e4ea85..cb83554 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -219,7 +219,7 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
>  EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
>  
>  /**
> - * irq_domain_add_linear() - Allocate and register a legacy revmap irq_domain.
> + * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
>   * @of_node: pointer to interrupt controller's device tree node.
>   * @size: Number of interrupts in the domain.
>   * @ops: map/unmap domain callbacks
> -- 
> 1.7.0.4
> 
> 

-- 
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
  2012-06-20  9:00   ` Dong Aisheng
@ 2012-07-11 22:19     ` Thomas Gleixner
  -1 siblings, 0 replies; 12+ messages in thread
From: Thomas Gleixner @ 2012-07-11 22:19 UTC (permalink / raw)
  To: Dong Aisheng; +Cc: linux-kernel, linux-arm-kernel, grant.likely, benh

On Wed, 20 Jun 2012, Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> There're two copies of irq_desc initialization code, reform them into
> an irq_desc_initialize function to call.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> ---
>  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
>  1 files changed, 28 insertions(+), 23 deletions(-)

We add more code by removing redundant copies?


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
@ 2012-07-11 22:19     ` Thomas Gleixner
  0 siblings, 0 replies; 12+ messages in thread
From: Thomas Gleixner @ 2012-07-11 22:19 UTC (permalink / raw)
  To: linux-arm-kernel

On Wed, 20 Jun 2012, Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@linaro.org>
> 
> There're two copies of irq_desc initialization code, reform them into
> an irq_desc_initialize function to call.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> ---
>  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
>  1 files changed, 28 insertions(+), 23 deletions(-)

We add more code by removing redundant copies?

^ permalink raw reply	[flat|nested] 12+ messages in thread

* Re: [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
  2012-07-11 22:19     ` Thomas Gleixner
@ 2012-07-12  3:26       ` Dong Aisheng
  -1 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-07-12  3:26 UTC (permalink / raw)
  To: Thomas Gleixner; +Cc: linux-kernel, linux-arm-kernel, grant.likely, benh

Hi Thomas,

Thanks for the review firstly.

On Thu, Jul 12, 2012 at 06:19:18AM +0800, Thomas Gleixner wrote:
> On Wed, 20 Jun 2012, Dong Aisheng wrote:
> > From: Dong Aisheng <dong.aisheng@linaro.org>
> > 
> > There're two copies of irq_desc initialization code, reform them into
> > an irq_desc_initialize function to call.
> > 
> > Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> > ---
> >  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
> >  1 files changed, 28 insertions(+), 23 deletions(-)
> 
> We add more code by removing redundant copies?
> 
I also had this strange question.
I looked the code a bit more, i guess the main problem is that the redundant copies
is not too big, so we can not see great savings.

Compare to the init code of irq_desc in original alloc_desc function,
the new irq_desc_initialize function saves 4 lines.
However, the new function also add 4 lines for defining extra function name,
parameter and etc.
And alloc_desc still needs to call irq_desc_initialize and checking return value
which needs extra 6 lines.
The main saving is another copy of irq_desc initialization in early_irq_init,
but this copy does not check any return values which cause we did not save too much,
only about 4 lines.
Plus extra blan lines added, so totally it does not save more than new added.

However, i was thinking it could make code looks a bit better.
So i sent out this RFC patch.
Do you think if it's reasonable?

BTW, there's an issue in my patch, should change like:
        if (alloc_masks(desc, GFP_KERNEL, node)) {
-               kfree(desc->kstat_irqs);
+               free_percpu(desc->kstat_irqs);
                return -ENOMEM;
        }

Regards
Dong Aisheng


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines
@ 2012-07-12  3:26       ` Dong Aisheng
  0 siblings, 0 replies; 12+ messages in thread
From: Dong Aisheng @ 2012-07-12  3:26 UTC (permalink / raw)
  To: linux-arm-kernel

Hi Thomas,

Thanks for the review firstly.

On Thu, Jul 12, 2012 at 06:19:18AM +0800, Thomas Gleixner wrote:
> On Wed, 20 Jun 2012, Dong Aisheng wrote:
> > From: Dong Aisheng <dong.aisheng@linaro.org>
> > 
> > There're two copies of irq_desc initialization code, reform them into
> > an irq_desc_initialize function to call.
> > 
> > Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
> > ---
> >  kernel/irq/irqdesc.c |   51 +++++++++++++++++++++++++++----------------------
> >  1 files changed, 28 insertions(+), 23 deletions(-)
> 
> We add more code by removing redundant copies?
> 
I also had this strange question.
I looked the code a bit more, i guess the main problem is that the redundant copies
is not too big, so we can not see great savings.

Compare to the init code of irq_desc in original alloc_desc function,
the new irq_desc_initialize function saves 4 lines.
However, the new function also add 4 lines for defining extra function name,
parameter and etc.
And alloc_desc still needs to call irq_desc_initialize and checking return value
which needs extra 6 lines.
The main saving is another copy of irq_desc initialization in early_irq_init,
but this copy does not check any return values which cause we did not save too much,
only about 4 lines.
Plus extra blan lines added, so totally it does not save more than new added.

However, i was thinking it could make code looks a bit better.
So i sent out this RFC patch.
Do you think if it's reasonable?

BTW, there's an issue in my patch, should change like:
        if (alloc_masks(desc, GFP_KERNEL, node)) {
-               kfree(desc->kstat_irqs);
+               free_percpu(desc->kstat_irqs);
                return -ENOMEM;
        }

Regards
Dong Aisheng

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2012-07-12  3:36 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-06-20  9:00 [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap Dong Aisheng
2012-06-20  9:00 ` Dong Aisheng
2012-06-20  9:00 ` [RFC PATCH 2/2] irq: add irq_desc_initialize to remove some duplicated lines Dong Aisheng
2012-06-20  9:00   ` Dong Aisheng
2012-07-06  9:18   ` Dong Aisheng
2012-07-06  9:18     ` Dong Aisheng
2012-07-11 22:19   ` Thomas Gleixner
2012-07-11 22:19     ` Thomas Gleixner
2012-07-12  3:26     ` Dong Aisheng
2012-07-12  3:26       ` Dong Aisheng
2012-07-11 14:07 ` [RFC PATCH 1/2] irq_domain: correct a minor wrong comment for linear revmap Grant Likely
2012-07-11 14:07   ` Grant Likely

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