[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>

diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 6716cbf..9561eb3 100644 (file)
--- 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 f55540a..9c4d93c 100644 (file)
--- 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;