linux-kernel - Re: [PATCH 4/4] sysfs: Use sysfs_attr_init and sysfs_bin_attr

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Message-ID: <20100215103816.GK12076@hack.private>
Date:	Mon, 15 Feb 2010 18:38:16 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Américo Wang <xiyou.wangcong@...il.com>,
	"Tejun Heo <tj@...nel.org> Neil Brown" <neilb@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] sysfs: Use sysfs_attr_init and sysfs_bin_attr_init
	on dynamic attributes

On Thu, Feb 11, 2010 at 03:23:05PM -0800, Eric W. Biederman wrote:
>
>These are the non-static sysfs attributes that exist on
>my test machine.  Fix them to use sysfs_attr_init or
>sysfs_bin_attr_init as appropriate.   It simply requires
>making a sysfs attribute present to see this.  So this
>is a little bit tedious but otherwise not too bad.
>
>Signed-off-by: Eric W. Biederman <ebiederm@...ssion.com>


Based on previous patches,

Acked-by: WANG Cong <xiyou.wangcong@...il.com>

But it seems there are still some cases missed, e.g. the one
reported by John. We can fix them when they appear.

Thanks!

>---
> arch/x86/kernel/cpu/mcheck/mce.c |    1 +
> drivers/acpi/system.c            |    2 ++
> drivers/pci/pci-sysfs.c          |    5 +++++
> kernel/params.c                  |    1 +
> 4 files changed, 9 insertions(+), 0 deletions(-)
>
>diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
>index a8aacd4..28cba46 100644
>--- a/arch/x86/kernel/cpu/mcheck/mce.c
>+++ b/arch/x86/kernel/cpu/mcheck/mce.c
>@@ -2044,6 +2044,7 @@ static __init void mce_init_banks(void)
> 		struct mce_bank *b = &mce_banks[i];
> 		struct sysdev_attribute *a = &b->attr;
> 
>+		sysfs_attr_init(&a->attr);
> 		a->attr.name	= b->attrname;
> 		snprintf(b->attrname, ATTR_LEN, "bank%d", i);
> 
>diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
>index d112829..a50fd08 100644
>--- a/drivers/acpi/system.c
>+++ b/drivers/acpi/system.c
>@@ -101,6 +101,7 @@ static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
> 	struct acpi_table_header *header = NULL;
> 	struct acpi_table_attr *attr = NULL;
> 
>+	sysfs_attr_init(&table_attr->attr.attr);
> 	if (table_header->signature[0] != '\0')
> 		memcpy(table_attr->name, table_header->signature,
> 			ACPI_NAME_SIZE);
>@@ -475,6 +476,7 @@ void acpi_irq_stats_init(void)
> 			goto fail;
> 		strncpy(name, buffer, strlen(buffer) + 1);
> 
>+		sysfs_attr_init(&counter_attrs[i].attr);
> 		counter_attrs[i].attr.name = name;
> 		counter_attrs[i].attr.mode = 0644;
> 		counter_attrs[i].show = counter_show;
>diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
>index c5df94e..6fbcbea 100644
>--- a/drivers/pci/pci-sysfs.c
>+++ b/drivers/pci/pci-sysfs.c
>@@ -640,6 +640,7 @@ void pci_create_legacy_files(struct pci_bus *b)
> 	if (!b->legacy_io)
> 		goto kzalloc_err;
> 
>+	sysfs_bin_attr_init(&b->legacy_io);
> 	b->legacy_io->attr.name = "legacy_io";
> 	b->legacy_io->size = 0xffff;
> 	b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
>@@ -652,6 +653,7 @@ void pci_create_legacy_files(struct pci_bus *b)
> 		goto legacy_io_err;
> 
> 	/* Allocated above after the legacy_io struct */
>+	sysfs_bin_attr_init(&b->legacy_mem);
> 	b->legacy_mem = b->legacy_io + 1;
> 	b->legacy_mem->attr.name = "legacy_mem";
> 	b->legacy_mem->size = 1024*1024;
>@@ -798,6 +800,7 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
> 	if (res_attr) {
> 		char *res_attr_name = (char *)(res_attr + 1);
> 
>+		sysfs_bin_attr_init(res_attr);
> 		if (write_combine) {
> 			pdev->res_attr_wc[num] = res_attr;
> 			sprintf(res_attr_name, "resource%d_wc", num);
>@@ -970,6 +973,7 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev)
> 		if (!attr)
> 			return -ENOMEM;
> 
>+		sysfs_bin_attr_init(attr);
> 		attr->size = dev->vpd->len;
> 		attr->attr.name = "vpd";
> 		attr->attr.mode = S_IRUSR | S_IWUSR;
>@@ -1036,6 +1040,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
> 			retval = -ENOMEM;
> 			goto err_resource_files;
> 		}
>+		sysfs_bin_attr_init(attr);
> 		attr->size = rom_size;
> 		attr->attr.name = "rom";
> 		attr->attr.mode = S_IRUSR;
>diff --git a/kernel/params.c b/kernel/params.c
>index cf1b691..5bf6deb 100644
>--- a/kernel/params.c
>+++ b/kernel/params.c
>@@ -517,6 +517,7 @@ static __modinit int add_sysfs_param(struct module_kobject *mk,
> 	new->grp.attrs = attrs;
> 
> 	/* Tack new one on the end. */
>+	sysfs_attr_init(&new->attrs[num].mattr.attr);
> 	new->attrs[num].param = kp;
> 	new->attrs[num].mattr.show = param_attr_show;
> 	new->attrs[num].mattr.store = param_attr_store;
>-- 
>1.6.5.2.143.g8cc62
>

-- 
Live like a child, think like the god.
 
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