X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fksysfs.c;h=e0ffe4ab091785d36bccdec062a1fc2cb26c4936;hb=e620c4940002348417e8d317d65bc7b152646493;hp=f2690ed7453068460f432a52dc97f685a950ec0a;hpb=ec1248e70edc5cf7b485efcc7b41e44e10f422e5;p=linux-2.6

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index f2690ed745..e0ffe4ab09 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -8,12 +8,12 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/kobject.h>
 #include <linux/string.h>
 #include <linux/sysfs.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/kexec.h>
 
 #define KERNEL_ATTR_RO(_name) \
 static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
@@ -22,7 +22,7 @@ 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)
 {
@@ -48,13 +48,31 @@ static ssize_t uevent_helper_store(struct subsystem *subsys, const char *page, s
 KERNEL_ATTR_RW(uevent_helper);
 #endif
 
+#ifdef CONFIG_KEXEC
+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 kexec_crash_loaded_show(struct subsystem *subsys, char *page)
+{
+	return sprintf(page, "%d\n", !!kexec_crash_image);
+}
+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
+	&kexec_loaded_attr.attr,
+	&kexec_crash_loaded_attr.attr,
 #endif
 	NULL
 };