[patch 30/61] lock validator: x86_64 early init

[Ingo Molnar]

From: Ingo Molnar <mingo@xxxxxxx>

x86_64 uses spinlocks very early - earlier than start_kernel().
So call lockdep_init() from the arch setup code.

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
---
 arch/x86_64/kernel/head64.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux/arch/x86_64/kernel/head64.c
===================================================================
--- linux.orig/arch/x86_64/kernel/head64.c
+++ linux/arch/x86_64/kernel/head64.c
@@ -85,6 +85,11 @@ void __init x86_64_start_kernel(char * r
 	clear_bss();
 
 	/*
+	 * This must be called really, really early:
+	 */
+	lockdep_init();
+
+	/*
 	 * switch to init_level4_pgt from boot_level4_pgt
 	 */
 	memcpy(init_level4_pgt, boot_level4_pgt, PTRS_PER_PGD*sizeof(pgd_t));
-
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