[PATCH] Remove need for early lockdep init

I think it was only needed for the printks and we can do them later.

I put in a single early_printk so that we know the kernel is alive
(early_printk doesn't need any locks)

This makes some things easier for initialization of unwind for
lockdep, which is needed by later patches.

cc: mingo@elte.hu

Signed-off-by: Andi Kleen <ak@suse.de>

2 files changed, 3 insertions, 7 deletions

diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 6716cbfc34ac..9561eb3c5b5c 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -45,15 +45,12 @@ static void __init copy_bootdata(char *real_mode_data)
         new_data = *(int *) (x86_boot_params + NEW_CL_POINTER);
         if (!new_data) {
                 if (OLD_CL_MAGIC != * (u16 *) OLD_CL_MAGIC_ADDR) {
-                        printk("so old bootloader that it does not support commandline?!\n");
                         return;
                 }
                 new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
-                printk("old bootloader convention, maybe loadlin?\n");
         }
         command_line = (char *) ((u64)(new_data));
         memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
-        printk("Bootdata ok (command line is %s)\n", saved_command_line);       
 }
 
 void __init x86_64_start_kernel(char * real_mode_data)
@@ -65,10 +62,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
         asm volatile("lidt %0" :: "m" (idt_descr));
         clear_bss();
 
-        /*
-         * This must be called really, really early:
-         */
-        lockdep_init();
+        early_printk("Kernel alive\n");
 
         /*
          * switch to init_level4_pgt from boot_level4_pgt
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index f55540a6084e..9c4d93c53c06 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -353,6 +353,8 @@ static void discover_ebda(void)
 
 void __init setup_arch(char **cmdline_p)
 {
+        printk(KERN_INFO "Command line: %s\n", saved_command_line);
+
         ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
         screen_info = SCREEN_INFO;
         edid_info = EDID_INFO;