Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...

[pandora-kernel.git] / init / main.c

diff --git a/init/main.c b/init/main.c
index 7c79da5..2714e0e 100644 (file)
--- a/init/main.c
+++ b/init/main.c
@@ -325,7 +325,7 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { }
 #else
 
 #ifdef __GENERIC_PER_CPU
-unsigned long __per_cpu_offset[NR_CPUS];
+unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
 
 EXPORT_SYMBOL(__per_cpu_offset);
 
@@ -333,6 +333,7 @@ static void __init setup_per_cpu_areas(void)
 {
        unsigned long size, i;
        char *ptr;
+       unsigned long nr_possible_cpus = num_possible_cpus();
 
        /* Copy section for each CPU (we discard the original) */
        size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
@@ -340,12 +341,12 @@ static void __init setup_per_cpu_areas(void)
        if (size < PERCPU_ENOUGH_ROOM)
                size = PERCPU_ENOUGH_ROOM;
 #endif
+       ptr = alloc_bootmem(size * nr_possible_cpus);
 
-       ptr = alloc_bootmem(size * NR_CPUS);
-
-       for (i = 0; i < NR_CPUS; i++, ptr += size) {
+       for_each_cpu(i) {
                __per_cpu_offset[i] = ptr - __per_cpu_start;
                memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
+               ptr += size;
        }
 }
 #endif /* !__GENERIC_PER_CPU */
@@ -438,6 +439,15 @@ void __init parse_early_param(void)
  *     Activate the first processor.
  */
 
+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);
+}
+
 asmlinkage void __init start_kernel(void)
 {
        char * command_line;
@@ -447,17 +457,13 @@ asmlinkage void __init start_kernel(void)
  * enable them
  */
        lock_kernel();
+       boot_cpu_init();
        page_address_init();
        printk(KERN_NOTICE);
        printk(linux_banner);
        setup_arch(&command_line);
        setup_per_cpu_areas();
-
-       /*
-        * Mark the boot cpu "online" so that it can call console drivers in
-        * printk() and can access its per-cpu storage.
-        */
-       smp_prepare_boot_cpu();
+       smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
 
        /*
         * Set up the scheduler prior starting any interrupts (such as the
@@ -668,7 +674,6 @@ static int init(void * unused)
         */
        child_reaper = current;
 
-       /* Sets up cpus_possible() */
        smp_prepare_cpus(max_cpus);
 
        do_pre_smp_initcalls();