Merge branch 'for-usb-linus' of master.kernel.org:/pub/scm/linux/kernel/git/sarah...

[mv-sheeva.git] / init / main.c

diff --git a/init/main.c b/init/main.c
index 8646401f7a0e4b77579aa13f8de6ac191787be73..33c37c379e96458521a0111a968849139edcf586 100644 (file)
--- a/init/main.c
+++ b/init/main.c
@@ -67,6 +67,7 @@
 #include <linux/sfi.h>
 #include <linux/shmem_fs.h>
 #include <linux/slab.h>
+#include <linux/perf_event.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -95,6 +96,15 @@ static inline void mark_rodata_ro(void) { }
 extern void tc_init(void);
 #endif
 
+/*
+ * Debug helper: via this flag we know that we are in 'early bootup code'
+ * where only the boot processor is running with IRQ disabled.  This means
+ * two things - IRQ must not be enabled before the flag is cleared and some
+ * operations which are not allowed with IRQ disabled are allowed while the
+ * flag is set.
+ */
+bool early_boot_irqs_disabled __read_mostly;
+
 enum system_states system_state __read_mostly;
 EXPORT_SYMBOL(system_state);
 
@@ -553,7 +563,7 @@ asmlinkage void __init start_kernel(void)
        cgroup_init_early();
 
        local_irq_disable();
-       early_boot_irqs_off();
+       early_boot_irqs_disabled = true;
 
 /*
  * Interrupts are still disabled. Do necessary setups, then
@@ -603,6 +613,8 @@ asmlinkage void __init start_kernel(void)
                                "enabled *very* early, fixing it\n");
                local_irq_disable();
        }
+       idr_init_cache();
+       perf_event_init();
        rcu_init();
        radix_tree_init();
        /* init some links before init_ISA_irqs() */
@@ -618,7 +630,7 @@ asmlinkage void __init start_kernel(void)
        if (!irqs_disabled())
                printk(KERN_CRIT "start_kernel(): bug: interrupts were "
                                 "enabled early\n");
-       early_boot_irqs_on();
+       early_boot_irqs_disabled = false;
        local_irq_enable();
 
        /* Interrupts are enabled now so all GFP allocations are safe. */
@@ -658,7 +670,6 @@ asmlinkage void __init start_kernel(void)
        enable_debug_pagealloc();
        kmemleak_init();
        debug_objects_mem_init();
-       idr_init_cache();
        setup_per_cpu_pageset();
        numa_policy_init();
        if (late_time_init)
@@ -775,9 +786,6 @@ static void __init do_initcalls(void)
 
        for (fn = __early_initcall_end; fn < __initcall_end; fn++)
                do_one_initcall(*fn);
-
-       /* Make sure there is no pending stuff from the initcall sequence */
-       flush_scheduled_work();
 }
 
 /*
@@ -882,6 +890,7 @@ static int __init kernel_init(void * unused)
        smp_prepare_cpus(setup_max_cpus);
 
        do_pre_smp_initcalls();
+       lockup_detector_init();
 
        smp_init();
        sched_init_smp();