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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /kernel/ksysfs.c | |
download | lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'kernel/ksysfs.c')
-rw-r--r-- | kernel/ksysfs.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c new file mode 100644 index 000000000000..1f064a63f8cf --- /dev/null +++ b/kernel/ksysfs.c @@ -0,0 +1,57 @@ +/* + * kernel/ksysfs.c - sysfs attributes in /sys/kernel, which + * are not related to any other subsystem + * + * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> + * + * This file is release under the GPLv2 + * + */ + +#include <linux/config.h> +#include <linux/kobject.h> +#include <linux/string.h> +#include <linux/sysfs.h> +#include <linux/module.h> +#include <linux/init.h> + +#define KERNEL_ATTR_RO(_name) \ +static struct subsys_attribute _name##_attr = __ATTR_RO(_name) + +#define KERNEL_ATTR_RW(_name) \ +static struct subsys_attribute _name##_attr = \ + __ATTR(_name, 0644, _name##_show, _name##_store) + +#ifdef CONFIG_HOTPLUG +static ssize_t hotplug_seqnum_show(struct subsystem *subsys, char *page) +{ + return sprintf(page, "%llu\n", (unsigned long long)hotplug_seqnum); +} +KERNEL_ATTR_RO(hotplug_seqnum); +#endif + +decl_subsys(kernel, NULL, NULL); +EXPORT_SYMBOL_GPL(kernel_subsys); + +static struct attribute * kernel_attrs[] = { +#ifdef CONFIG_HOTPLUG + &hotplug_seqnum_attr.attr, +#endif + NULL +}; + +static struct attribute_group kernel_attr_group = { + .attrs = kernel_attrs, +}; + +static int __init ksysfs_init(void) +{ + int error = subsystem_register(&kernel_subsys); + if (!error) + error = sysfs_create_group(&kernel_subsys.kset.kobj, + &kernel_attr_group); + + return error; +} + +core_initcall(ksysfs_init); |