nfs: new subdir Documentation/filesystems/nfs

[safe/jmp/linux-2.6] / init / main.c

diff --git a/init/main.c b/init/main.c
index b3e8f14..5988deb 100644 (file)
--- a/init/main.c
+++ b/init/main.c
@@ -18,12 +18,12 @@
 #include <linux/string.h>
 #include <linux/ctype.h>
 #include <linux/delay.h>
-#include <linux/utsname.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/smp_lock.h>
 #include <linux/initrd.h>
 #include <linux/bootmem.h>
+#include <linux/acpi.h>
 #include <linux/tty.h>
 #include <linux/gfp.h>
 #include <linux/percpu.h>
@@ -65,7 +65,10 @@
 #include <linux/idr.h>
 #include <linux/ftrace.h>
 #include <linux/async.h>
+#include <linux/kmemcheck.h>
 #include <linux/kmemtrace.h>
+#include <linux/sfi.h>
+#include <linux/shmem_fs.h>
 #include <trace/boot.h>
 
 #include <asm/io.h>
@@ -87,11 +90,6 @@ extern void sbus_init(void);
 extern void prio_tree_init(void);
 extern void radix_tree_init(void);
 extern void free_initmem(void);
-#ifdef CONFIG_ACPI
-extern void acpi_early_init(void);
-#else
-static inline void acpi_early_init(void) { }
-#endif
 #ifndef CONFIG_DEBUG_RODATA
 static inline void mark_rodata_ro(void) { }
 #endif
@@ -356,17 +354,11 @@ static void __init smp_init(void)
 #define smp_init()     do { } while (0)
 #endif
 
-static inline void setup_per_cpu_areas(void) { }
 static inline void setup_nr_cpu_ids(void) { }
 static inline void smp_prepare_cpus(unsigned int maxcpus) { }
 
 #else
 
-#if NR_CPUS > BITS_PER_LONG
-cpumask_t cpu_mask_all __read_mostly = CPU_MASK_ALL;
-EXPORT_SYMBOL(cpu_mask_all);
-#endif
-
 /* Setup number of possible processor ids */
 int nr_cpu_ids __read_mostly = NR_CPUS;
 EXPORT_SYMBOL(nr_cpu_ids);
@@ -377,29 +369,6 @@ static void __init setup_nr_cpu_ids(void)
        nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1;
 }
 
-#ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
-
-EXPORT_SYMBOL(__per_cpu_offset);
-
-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(PERCPU_ENOUGH_ROOM, PAGE_SIZE);
-       ptr = alloc_bootmem_pages(size * nr_possible_cpus);
-
-       for_each_possible_cpu(i) {
-               __per_cpu_offset[i] = ptr - __per_cpu_start;
-               memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
-               ptr += size;
-       }
-}
-#endif /* CONFIG_HAVE_SETUP_PER_CPU_AREA */
-
 /* Called by boot processor to activate the rest. */
 static void __init smp_init(void)
 {
@@ -454,6 +423,7 @@ static noinline void __init_refok rest_init(void)
 {
        int pid;
 
+       rcu_scheduler_starting();
        kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
        numa_default_policy();
        pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
@@ -465,7 +435,6 @@ static noinline void __init_refok rest_init(void)
         * at least once to get things moving:
         */
        init_idle_bootup_task(current);
-       rcu_scheduler_starting();
        preempt_enable_no_resched();
        schedule();
        preempt_disable();
@@ -546,6 +515,7 @@ static void __init mm_init(void)
        page_cgroup_init_flatmem();
        mem_init();
        kmem_cache_init();
+       pgtable_cache_init();
        vmalloc_init();
 }
 
@@ -586,8 +556,8 @@ asmlinkage void __init start_kernel(void)
        setup_arch(&command_line);
        mm_init_owner(&init_mm, &init_task);
        setup_command_line(command_line);
-       setup_per_cpu_areas();
        setup_nr_cpu_ids();
+       setup_per_cpu_areas();
        smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
 
        build_all_zonelists();
@@ -633,7 +603,6 @@ asmlinkage void __init start_kernel(void)
        softirq_init();
        timekeeping_init();
        time_init();
-       sched_clock_init();
        profile_init();
        if (!irqs_disabled())
                printk(KERN_CRIT "start_kernel(): bug: interrupts were "
@@ -641,6 +610,11 @@ asmlinkage void __init start_kernel(void)
        early_boot_irqs_on();
        local_irq_enable();
 
+       /* Interrupts are enabled now so all GFP allocations are safe. */
+       set_gfp_allowed_mask(__GFP_BITS_MASK);
+
+       kmem_cache_init_late();
+
        /*
         * HACK ALERT! This is early. We're enabling the console before
         * we've done PCI setups etc, and console_init() must be aware of
@@ -669,10 +643,8 @@ asmlinkage void __init start_kernel(void)
                initrd_start = 0;
        }
 #endif
-       cpuset_init_early();
        page_cgroup_init();
        enable_debug_pagealloc();
-       cpu_hotplug_init();
        kmemtrace_init();
        kmemleak_init();
        debug_objects_mem_init();
@@ -681,9 +653,9 @@ asmlinkage void __init start_kernel(void)
        numa_policy_init();
        if (late_time_init)
                late_time_init();
+       sched_clock_init();
        calibrate_delay();
        pidmap_init();
-       pgtable_cache_init();
        anon_vma_init();
 #ifdef CONFIG_X86
        if (efi_enabled)
@@ -691,12 +663,12 @@ asmlinkage void __init start_kernel(void)
 #endif
        thread_info_cache_init();
        cred_init();
-       fork_init(num_physpages);
+       fork_init(totalram_pages);
        proc_caches_init();
        buffer_init();
        key_init();
        security_init();
-       vfs_caches_init(num_physpages);
+       vfs_caches_init(totalram_pages);
        radix_tree_init();
        signals_init();
        /* rootfs populating might need page-writeback */
@@ -712,6 +684,7 @@ asmlinkage void __init start_kernel(void)
        check_bugs();
 
        acpi_early_init(); /* before LAPIC and SMP init */
+       sfi_init_late();
 
        ftrace_init();
 
@@ -719,16 +692,28 @@ asmlinkage void __init start_kernel(void)
        rest_init();
 }
 
+/* Call all constructor functions linked into the kernel. */
+static void __init do_ctors(void)
+{
+#ifdef CONFIG_CONSTRUCTORS
+       ctor_fn_t *call = (ctor_fn_t *) __ctors_start;
+
+       for (; call < (ctor_fn_t *) __ctors_end; call++)
+               (*call)();
+#endif
+}
+
 int initcall_debug;
 core_param(initcall_debug, initcall_debug, bool, 0644);
 
+static char msgbuf[64];
+static struct boot_trace_call call;
+static struct boot_trace_ret ret;
+
 int do_one_initcall(initcall_t fn)
 {
        int count = preempt_count();
        ktime_t calltime, delta, rettime;
-       char msgbuf[64];
-       struct boot_trace_call call;
-       struct boot_trace_ret ret;
 
        if (initcall_debug) {
                call.caller = task_pid_nr(current);
@@ -793,12 +778,13 @@ static void __init do_initcalls(void)
  */
 static void __init do_basic_setup(void)
 {
-       rcu_init_sched(); /* needed by module_init stage. */
        init_workqueues();
        cpuset_init_smp();
        usermodehelper_init();
+       init_tmpfs();
        driver_init();
        init_irq_proc();
+       do_ctors();
        do_initcalls();
 }
 
@@ -866,6 +852,11 @@ static noinline int init_post(void)
 static int __init kernel_init(void * unused)
 {
        lock_kernel();
+
+       /*
+        * init can allocate pages on any node
+        */
+       set_mems_allowed(node_possible_map);
        /*
         * init can run on any cpu.
         */