1 files changed, 4 insertions, 27 deletions

diff --git a/init/main.c b/init/main.c
index 77cb720fed4e..72a521c0da07 100644
--- a/init/main.c
+++ b/init/main.c
@@ -76,15 +76,6 @@
 #include <asm/smp.h>
 #endif
 
-/*
- * This is one of the first .c files built. Error out early if we have compiler
- * trouble.
- */
-
-#if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
-#warning gcc-4.1.0 is known to miscompile the kernel.  A different compiler version is recommended.
-#endif
-
 static int kernel_init(void *);
 
 extern void init_IRQ(void);
@@ -381,12 +372,7 @@ EXPORT_SYMBOL(nr_cpu_ids);
 /* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
 static void __init setup_nr_cpu_ids(void)
 {
-        int cpu, highest_cpu = 0;
-
-        for_each_possible_cpu(cpu)
-                highest_cpu = cpu;
-
-        nr_cpu_ids = highest_cpu + 1;
+        nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1;
 }
 
 #ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
@@ -528,9 +514,9 @@ static void __init boot_cpu_init(void)
 {
         int cpu = smp_processor_id();
         /* Mark the boot cpu "present", "online" etc for SMP and UP case */
-        cpu_set(cpu, cpu_online_map);
-        cpu_set(cpu, cpu_present_map);
-        cpu_set(cpu, cpu_possible_map);
+        set_cpu_online(cpu, true);
+        set_cpu_present(cpu, true);
+        set_cpu_possible(cpu, true);
 }
 
 void __init __weak smp_setup_processor_id(void)
@@ -541,15 +527,6 @@ void __init __weak thread_info_cache_init(void)
 {
 }
 
-void __init __weak arch_early_irq_init(void)
-{
-}
-
-void __init __weak early_irq_init(void)
-{
-        arch_early_irq_init();
-}
-
 asmlinkage void __init start_kernel(void)
 {
         char * command_line;