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[PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()

ye.xingchen@zte.com.cn posted 1 patch 2 years, 9 months ago 
drivers/platform/x86/uv_sysfs.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
[PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()
Posted by ye.xingchen@zte.com.cn 2 years, 9 months ago 
From: ye xingchen <ye.xingchen@zte.com.cn>

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
---
 drivers/platform/x86/uv_sysfs.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/uv_sysfs.c b/drivers/platform/x86/uv_sysfs.c
index 625b0b79d185..73fc38ee7430 100644
--- a/drivers/platform/x86/uv_sysfs.c
+++ b/drivers/platform/x86/uv_sysfs.c
@@ -119,12 +119,12 @@ struct uv_hub {

 static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name);
+	return sysfs_emit(buf, "%s\n", hub_info->name);
 }

 static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location);
+	return sysfs_emit(buf, "%s\n", hub_info->location);
 }

 static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
@@ -460,12 +460,12 @@ struct uv_pci_top_obj {

 static ssize_t uv_pci_type_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->type);
+	return sysfs_emit(buf, "%s\n", top_obj->type);
 }

 static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->location);
+	return sysfs_emit(buf, "%s\n", top_obj->location);
 }

 static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
@@ -475,7 +475,7 @@ static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)

 static ssize_t uv_pci_ppb_addr_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->ppb_addr);
+	return sysfs_emit(buf, "%s\n", top_obj->ppb_addr);
 }

 static ssize_t uv_pci_slot_show(struct uv_pci_top_obj *top_obj, char *buf)
@@ -737,7 +737,7 @@ static ssize_t coherence_id_show(struct kobject *kobj,
 static ssize_t uv_type_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", uv_type_string());
+	return sysfs_emit(buf, "%s\n", uv_type_string());
 }

 static ssize_t uv_archtype_show(struct kobject *kobj,
@@ -749,13 +749,13 @@ static ssize_t uv_archtype_show(struct kobject *kobj,
 static ssize_t uv_hub_type_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_hub_type());
+	return sysfs_emit(buf, "0x%x\n", uv_hub_type());
 }

 static ssize_t uv_hubless_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_get_hubless_system());
+	return sysfs_emit(buf, "0x%x\n", uv_get_hubless_system());
 }

 static struct kobj_attribute partition_id_attr =
-- 
2.25.1
Re: [PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()
Posted by Hans de Goede 2 years, 9 months ago 
Hi,

On 12/2/22 10:05, ye.xingchen@zte.com.cn wrote:
> From: ye xingchen <ye.xingchen@zte.com.cn>
> 
> Follow the advice of the Documentation/filesystems/sysfs.rst and show()
> should only use sysfs_emit() or sysfs_emit_at() when formatting the
> value to be returned to user space.
> 
> Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans


> ---
>  drivers/platform/x86/uv_sysfs.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/platform/x86/uv_sysfs.c b/drivers/platform/x86/uv_sysfs.c
> index 625b0b79d185..73fc38ee7430 100644
> --- a/drivers/platform/x86/uv_sysfs.c
> +++ b/drivers/platform/x86/uv_sysfs.c
> @@ -119,12 +119,12 @@ struct uv_hub {
> 
>  static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name);
> +	return sysfs_emit(buf, "%s\n", hub_info->name);
>  }
> 
>  static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location);
> +	return sysfs_emit(buf, "%s\n", hub_info->location);
>  }
> 
>  static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
> @@ -460,12 +460,12 @@ struct uv_pci_top_obj {
> 
>  static ssize_t uv_pci_type_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->type);
> +	return sysfs_emit(buf, "%s\n", top_obj->type);
>  }
> 
>  static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->location);
> +	return sysfs_emit(buf, "%s\n", top_obj->location);
>  }
> 
>  static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
> @@ -475,7 +475,7 @@ static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
> 
>  static ssize_t uv_pci_ppb_addr_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->ppb_addr);
> +	return sysfs_emit(buf, "%s\n", top_obj->ppb_addr);
>  }
> 
>  static ssize_t uv_pci_slot_show(struct uv_pci_top_obj *top_obj, char *buf)
> @@ -737,7 +737,7 @@ static ssize_t coherence_id_show(struct kobject *kobj,
>  static ssize_t uv_type_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", uv_type_string());
> +	return sysfs_emit(buf, "%s\n", uv_type_string());
>  }
> 
>  static ssize_t uv_archtype_show(struct kobject *kobj,
> @@ -749,13 +749,13 @@ static ssize_t uv_archtype_show(struct kobject *kobj,
>  static ssize_t uv_hub_type_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_hub_type());
> +	return sysfs_emit(buf, "0x%x\n", uv_hub_type());
>  }
> 
>  static ssize_t uv_hubless_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_get_hubless_system());
> +	return sysfs_emit(buf, "0x%x\n", uv_get_hubless_system());
>  }
> 
>  static struct kobj_attribute partition_id_attr =
RE: [PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()
Posted by Ernst, Justin 2 years, 9 months ago 
> Follow the advice of the Documentation/filesystems/sysfs.rst and show()
> should only use sysfs_emit() or sysfs_emit_at() when formatting the
> value to be returned to user space.
> 
> Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>

Thank you for the patch and for keeping me informed.

Reviewed-by: Justin Ernst <justin.ernst@hpe.com>

> ---
>  drivers/platform/x86/uv_sysfs.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/platform/x86/uv_sysfs.c b/drivers/platform/x86/uv_sysfs.c
> index 625b0b79d185..73fc38ee7430 100644
> --- a/drivers/platform/x86/uv_sysfs.c
> +++ b/drivers/platform/x86/uv_sysfs.c
> @@ -119,12 +119,12 @@ struct uv_hub {
> 
>  static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name);
> +	return sysfs_emit(buf, "%s\n", hub_info->name);
>  }
> 
>  static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location);
> +	return sysfs_emit(buf, "%s\n", hub_info->location);
>  }
> 
>  static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
> @@ -460,12 +460,12 @@ struct uv_pci_top_obj {
> 
>  static ssize_t uv_pci_type_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->type);
> +	return sysfs_emit(buf, "%s\n", top_obj->type);
>  }
> 
>  static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->location);
> +	return sysfs_emit(buf, "%s\n", top_obj->location);
>  }
> 
>  static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
> @@ -475,7 +475,7 @@ static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
> 
>  static ssize_t uv_pci_ppb_addr_show(struct uv_pci_top_obj *top_obj, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->ppb_addr);
> +	return sysfs_emit(buf, "%s\n", top_obj->ppb_addr);
>  }
> 
>  static ssize_t uv_pci_slot_show(struct uv_pci_top_obj *top_obj, char *buf)
> @@ -737,7 +737,7 @@ static ssize_t coherence_id_show(struct kobject *kobj,
>  static ssize_t uv_type_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "%s\n", uv_type_string());
> +	return sysfs_emit(buf, "%s\n", uv_type_string());
>  }
> 
>  static ssize_t uv_archtype_show(struct kobject *kobj,
> @@ -749,13 +749,13 @@ static ssize_t uv_archtype_show(struct kobject *kobj,
>  static ssize_t uv_hub_type_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_hub_type());
> +	return sysfs_emit(buf, "0x%x\n", uv_hub_type());
>  }
> 
>  static ssize_t uv_hubless_show(struct kobject *kobj,
>  			struct kobj_attribute *attr, char *buf)
>  {
> -	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_get_hubless_system());
> +	return sysfs_emit(buf, "0x%x\n", uv_get_hubless_system());
>  }
> 
>  static struct kobj_attribute partition_id_attr =
> --
> 2.25.1

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