*
*/
-#include <linux/config.h>
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/init.h>
-
-u64 uevent_seqnum;
-char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
+#include <linux/kexec.h>
#define KERNEL_ATTR_RO(_name) \
static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
static struct subsys_attribute _name##_attr = \
__ATTR(_name, 0644, _name##_show, _name##_store)
-#ifdef CONFIG_HOTPLUG
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
/* current uevent sequence number */
static ssize_t uevent_seqnum_show(struct subsystem *subsys, char *page)
{
#endif
#ifdef CONFIG_KEXEC
-#include <asm/kexec.h>
+static ssize_t kexec_loaded_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%d\n", !!kexec_image);
+}
+KERNEL_ATTR_RO(kexec_loaded);
-static ssize_t crash_notes_show(struct subsystem *subsys, char *page)
+static ssize_t kexec_crash_loaded_show(struct subsystem *subsys, char *page)
{
- return sprintf(page, "%p\n", (void *)crash_notes);
+ return sprintf(page, "%d\n", !!kexec_crash_image);
}
-KERNEL_ATTR_RO(crash_notes);
-#endif
+KERNEL_ATTR_RO(kexec_crash_loaded);
+#endif /* CONFIG_KEXEC */
decl_subsys(kernel, NULL, NULL);
EXPORT_SYMBOL_GPL(kernel_subsys);
static struct attribute * kernel_attrs[] = {
-#ifdef CONFIG_HOTPLUG
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
&uevent_seqnum_attr.attr,
&uevent_helper_attr.attr,
#endif
#ifdef CONFIG_KEXEC
- &crash_notes_attr.attr,
+ &kexec_loaded_attr.attr,
+ &kexec_crash_loaded_attr.attr,
#endif
NULL
};