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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /kernel/ksysfs.c
downloadlinux-sh-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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.c57
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);