1 files changed, 9 insertions, 26 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 14e97282eb6c..c01858090a98 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -301,26 +301,6 @@ void kernel_restart(char *cmd)
 }
 EXPORT_SYMBOL_GPL(kernel_restart);
 
-/**
- *      kernel_kexec - reboot the system
- *
- *      Move into place and start executing a preloaded standalone
- *      executable.  If nothing was preloaded return an error.
- */
-static void kernel_kexec(void)
-{
-#ifdef CONFIG_KEXEC
-        struct kimage *image;
-        image = xchg(&kexec_image, NULL);
-        if (!image)
-                return;
-        kernel_restart_prepare(NULL);
-        printk(KERN_EMERG "Starting new kernel\n");
-        machine_shutdown();
-        machine_kexec(image);
-#endif
-}
-
 static void kernel_shutdown_prepare(enum system_states state)
 {
         blocking_notifier_call_chain(&reboot_notifier_list,
@@ -425,10 +405,15 @@ asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user
                 kernel_restart(buffer);
                 break;
 
+#ifdef CONFIG_KEXEC
         case LINUX_REBOOT_CMD_KEXEC:
-                kernel_kexec();
-                unlock_kernel();
-                return -EINVAL;
+                {
+                        int ret;
+                        ret = kernel_kexec();
+                        unlock_kernel();
+                        return ret;
+                }
+#endif
 
 #ifdef CONFIG_HIBERNATION
         case LINUX_REBOOT_CMD_SW_SUSPEND:
@@ -1343,8 +1328,6 @@ EXPORT_SYMBOL(in_egroup_p);
 
 DECLARE_RWSEM(uts_sem);
 
-EXPORT_SYMBOL(uts_sem);
-
 asmlinkage long sys_newuname(struct new_utsname __user * name)
 {
         int errno = 0;
@@ -1795,7 +1778,7 @@ int orderly_poweroff(bool force)
                 goto out;
         }
 
-        info = call_usermodehelper_setup(argv[0], argv, envp);
+        info = call_usermodehelper_setup(argv[0], argv, envp, GFP_ATOMIC);
         if (info == NULL) {
                 argv_free(argv);
                 goto out;