1 files changed, 28 insertions, 3 deletions

diff --git a/init/main.c b/init/main.c
index b2f3b566790e..628b8e9e841a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -47,6 +47,8 @@
 #include <linux/key.h>
 #include <linux/unwind.h>
 #include <linux/buffer_head.h>
+#include <linux/debug_locks.h>
+#include <linux/lockdep.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -456,6 +458,16 @@ asmlinkage void __init start_kernel(void)
 
         smp_setup_processor_id();
 
+        /*
+         * Need to run as early as possible, to initialize the
+         * lockdep hash:
+         */
+        lockdep_init();
+
+        local_irq_disable();
+        early_boot_irqs_off();
+        early_init_irq_lock_class();
+
 /*
  * Interrupts are still disabled. Do necessary setups, then
  * enable them
@@ -496,8 +508,13 @@ asmlinkage void __init start_kernel(void)
         init_timers();
         hrtimers_init();
         softirq_init();
-        time_init();
         timekeeping_init();
+        time_init();
+        profile_init();
+        if (!irqs_disabled())
+                printk("start_kernel(): bug: interrupts were enabled early\n");
+        early_boot_irqs_on();
+        local_irq_enable();
 
         /*
          * HACK ALERT! This is early. We're enabling the console before
@@ -507,8 +524,16 @@ asmlinkage void __init start_kernel(void)
         console_init();
         if (panic_later)
                 panic(panic_later, panic_param);
-        profile_init();
-        local_irq_enable();
+
+        lockdep_info();
+
+        /*
+         * Need to run this when irqs are enabled, because it wants
+         * to self-test [hard/soft]-irqs on/off lock inversion bugs
+         * too:
+         */
+        locking_selftest();
+
 #ifdef CONFIG_BLK_DEV_INITRD
         if (initrd_start && !initrd_below_start_ok &&
                         initrd_start < min_low_pfn << PAGE_SHIFT) {