#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/initrd.h>
-#include <linux/hdreg.h>
#include <linux/bootmem.h>
#include <linux/tty.h>
#include <linux/gfp.h>
#include <linux/percpu.h>
#include <linux/kmod.h>
+#include <linux/vmalloc.h>
#include <linux/kernel_stat.h>
#include <linux/start_kernel.h>
#include <linux/security.h>
+#include <linux/smp.h>
#include <linux/workqueue.h>
#include <linux/profile.h>
#include <linux/rcupdate.h>
#include <linux/writeback.h>
#include <linux/cpu.h>
#include <linux/cpuset.h>
+#include <linux/cgroup.h>
#include <linux/efi.h>
#include <linux/tick.h>
#include <linux/interrupt.h>
#include <linux/rmap.h>
#include <linux/mempolicy.h>
#include <linux/key.h>
-#include <linux/unwind.h>
#include <linux/buffer_head.h>
+#include <linux/page_cgroup.h>
#include <linux/debug_locks.h>
+#include <linux/debugobjects.h>
#include <linux/lockdep.h>
#include <linux/pid_namespace.h>
#include <linux/device.h>
#include <linux/kthread.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/idr.h>
+#include <linux/ftrace.h>
+#include <linux/async.h>
+#include <trace/boot.h>
#include <asm/io.h>
#include <asm/bugs.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/cacheflush.h>
+#include <trace/kmemtrace.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/smp.h>
#endif
-/*
- * This is one of the first .c files built. Error out early if we have compiler
- * trouble.
- *
- * Versions of gcc older than that listed below may actually compile and link
- * okay, but the end product can have subtle run time bugs. To avoid associated
- * bogus bug reports, we flatly refuse to compile with a gcc that is known to be
- * too old from the very beginning.
- */
-#if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)
-#error Sorry, your GCC is too old. It builds incorrect kernels.
-#endif
-
-#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);
extern void fork_init(unsigned long);
extern void mca_init(void);
extern void sbus_init(void);
-extern void signals_init(void);
-extern void pidhash_init(void);
-extern void pidmap_init(void);
extern void prio_tree_init(void);
extern void radix_tree_init(void);
extern void free_initmem(void);
extern void time_init(void);
/* Default late time init is NULL. archs can override this later. */
-void (*late_time_init)(void);
+void (*__initdata late_time_init)(void);
extern void softirq_init(void);
/* Untouched command line saved by arch-specific code. */
#ifdef CONFIG_SMP
/* Setup configured maximum number of CPUs to activate */
-static unsigned int __initdata max_cpus = NR_CPUS;
+unsigned int __initdata setup_max_cpus = NR_CPUS;
/*
* Setup routine for controlling SMP activation
static int __init nosmp(char *str)
{
- max_cpus = 0;
+ setup_max_cpus = 0;
disable_ioapic_setup();
return 0;
}
static int __init maxcpus(char *str)
{
- get_option(&str, &max_cpus);
- if (max_cpus == 0)
+ get_option(&str, &setup_max_cpus);
+ if (setup_max_cpus == 0)
disable_ioapic_setup();
return 0;
early_param("maxcpus", maxcpus);
#else
-#define max_cpus NR_CPUS
+#define setup_max_cpus NR_CPUS
#endif
/*
static int __init debug_kernel(char *str)
{
- if (*str)
- return 0;
console_loglevel = 10;
- return 1;
+ return 0;
}
static int __init quiet_kernel(char *str)
{
- if (*str)
- return 0;
console_loglevel = 4;
- return 1;
+ return 0;
}
-__setup("debug", debug_kernel);
-__setup("quiet", quiet_kernel);
+early_param("debug", debug_kernel);
+early_param("quiet", quiet_kernel);
static int __init loglevel(char *str)
{
get_option(&str, &console_loglevel);
- return 1;
+ return 0;
}
-__setup("loglevel=", loglevel);
+early_param("loglevel", loglevel);
/*
* Unknown boot options get handed to init, unless they look like
return 0;
/*
- * Preemptive maintenance for "why didn't my mispelled command
+ * Preemptive maintenance for "why didn't my misspelled command
* line work?"
*/
if (strchr(param, '.') && (!val || strchr(param, '.') < val)) {
return 0;
}
+#ifdef CONFIG_DEBUG_PAGEALLOC
+int __read_mostly debug_pagealloc_enabled = 0;
+#endif
+
static int __init init_setup(char *str)
{
unsigned int i;
#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
-#ifdef __GENERIC_PER_CPU
+#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);
+
+/* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
+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);
ptr += size;
}
}
-#endif /* !__GENERIC_PER_CPU */
+#endif /* CONFIG_HAVE_SETUP_PER_CPU_AREA */
/* Called by boot processor to activate the rest. */
static void __init smp_init(void)
{
unsigned int cpu;
+ /*
+ * Set up the current CPU as possible to migrate to.
+ * The other ones will be done by cpu_up/cpu_down()
+ */
+ cpu = smp_processor_id();
+ cpu_set(cpu, cpu_active_map);
+
/* FIXME: This should be done in userspace --RR */
for_each_present_cpu(cpu) {
- if (num_online_cpus() >= max_cpus)
+ if (num_online_cpus() >= setup_max_cpus)
break;
if (!cpu_online(cpu))
cpu_up(cpu);
/* Any cleanup work */
printk(KERN_INFO "Brought up %ld CPUs\n", (long)num_online_cpus());
- smp_cpus_done(max_cpus);
+ smp_cpus_done(setup_max_cpus);
}
#endif
* gcc-3.4 accidentally inlines this function, so use noinline.
*/
-static void noinline __init_refok rest_init(void)
+static noinline void __init_refok rest_init(void)
__releases(kernel_lock)
{
int pid;
kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
- kthreadd_task = find_task_by_pid(pid);
+ kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
unlock_kernel();
/*
{
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)
+{
}
-void __init __attribute__((weak)) smp_setup_processor_id(void)
+void __init __weak thread_info_cache_init(void)
{
}
* Need to run as early as possible, to initialize the
* lockdep hash:
*/
- unwind_init();
lockdep_init();
+ debug_objects_early_init();
+ cgroup_init_early();
local_irq_disable();
early_boot_irqs_off();
printk(KERN_NOTICE);
printk(linux_banner);
setup_arch(&command_line);
+ mm_init_owner(&init_mm, &init_task);
setup_command_line(command_line);
- unwind_setup();
setup_per_cpu_areas();
+ setup_nr_cpu_ids();
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
/*
sort_main_extable();
trap_init();
rcu_init();
+ /* init some links before init_ISA_irqs() */
+ early_irq_init();
init_IRQ();
pidhash_init();
init_timers();
softirq_init();
timekeeping_init();
time_init();
+ sched_clock_init();
profile_init();
if (!irqs_disabled())
- printk("start_kernel(): bug: interrupts were enabled early\n");
+ printk(KERN_CRIT "start_kernel(): bug: interrupts were "
+ "enabled early\n");
early_boot_irqs_on();
local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start && !initrd_below_start_ok &&
- initrd_start < min_low_pfn << PAGE_SHIFT) {
+ page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
- "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
+ "disabling it.\n",
+ page_to_pfn(virt_to_page((void *)initrd_start)),
+ min_low_pfn);
initrd_start = 0;
}
#endif
+ vmalloc_init();
vfs_caches_init_early();
cpuset_init_early();
+ page_cgroup_init();
mem_init();
+ enable_debug_pagealloc();
+ cpu_hotplug_init();
kmem_cache_init();
+ kmemtrace_init();
+ debug_objects_mem_init();
+ idr_init_cache();
setup_per_cpu_pageset();
numa_policy_init();
if (late_time_init)
if (efi_enabled)
efi_enter_virtual_mode();
#endif
+ thread_info_cache_init();
+ cred_init();
fork_init(num_physpages);
proc_caches_init();
buffer_init();
- unnamed_dev_init();
key_init();
security_init();
vfs_caches_init(num_physpages);
#ifdef CONFIG_PROC_FS
proc_root_init();
#endif
+ cgroup_init();
cpuset_init();
taskstats_init_early();
delayacct_init();
acpi_early_init(); /* before LAPIC and SMP init */
+ ftrace_init();
+
/* Do the rest non-__init'ed, we're now alive */
rest_init();
}
-static int __initdata initcall_debug;
+int initcall_debug;
+core_param(initcall_debug, initcall_debug, bool, 0644);
-static int __init initcall_debug_setup(char *str)
+int do_one_initcall(initcall_t fn)
{
- initcall_debug = 1;
- return 1;
-}
-__setup("initcall_debug", initcall_debug_setup);
+ 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);
+ printk("calling %pF @ %i\n", fn, call.caller);
+ calltime = ktime_get();
+ trace_boot_call(&call, fn);
+ enable_boot_trace();
+ }
-extern initcall_t __initcall_start[], __initcall_end[];
+ ret.result = fn();
-static void __init do_initcalls(void)
-{
- initcall_t *call;
- int count = preempt_count();
+ if (initcall_debug) {
+ disable_boot_trace();
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ ret.duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+ trace_boot_ret(&ret, fn);
+ printk("initcall %pF returned %d after %Ld usecs\n", fn,
+ ret.result, ret.duration);
+ }
- for (call = __initcall_start; call < __initcall_end; call++) {
- ktime_t t0, t1, delta;
- char *msg = NULL;
- char msgbuf[40];
- int result;
-
- if (initcall_debug) {
- printk("Calling initcall 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
- (unsigned long) *call);
- printk("\n");
- t0 = ktime_get();
- }
+ msgbuf[0] = 0;
- result = (*call)();
+ if (ret.result && ret.result != -ENODEV && initcall_debug)
+ sprintf(msgbuf, "error code %d ", ret.result);
- if (initcall_debug) {
- t1 = ktime_get();
- delta = ktime_sub(t1, t0);
+ if (preempt_count() != count) {
+ strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
+ preempt_count() = count;
+ }
+ if (irqs_disabled()) {
+ strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
+ local_irq_enable();
+ }
+ if (msgbuf[0]) {
+ printk("initcall %pF returned with %s\n", fn, msgbuf);
+ }
- printk("initcall 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
- (unsigned long) *call);
- printk(" returned %d.\n", result);
+ return ret.result;
+}
- printk("initcall 0x%p ran for %Ld msecs: ",
- *call, (unsigned long long)delta.tv64 >> 20);
- print_fn_descriptor_symbol("%s()\n",
- (unsigned long) *call);
- }
- if (result && result != -ENODEV && initcall_debug) {
- sprintf(msgbuf, "error code %d", result);
- msg = msgbuf;
- }
- if (preempt_count() != count) {
- msg = "preemption imbalance";
- preempt_count() = count;
- }
- if (irqs_disabled()) {
- msg = "disabled interrupts";
- local_irq_enable();
- }
- if (msg) {
- printk(KERN_WARNING "initcall at 0x%p", *call);
- print_fn_descriptor_symbol(": %s()",
- (unsigned long) *call);
- printk(": returned with %s\n", msg);
- }
- }
+extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
+
+static void __init do_initcalls(void)
+{
+ initcall_t *call;
+
+ for (call = __early_initcall_end; call < __initcall_end; call++)
+ do_one_initcall(*call);
/* Make sure there is no pending stuff from the initcall sequence */
flush_scheduled_work();
*/
static void __init do_basic_setup(void)
{
- /* drivers will send hotplug events */
+ rcu_init_sched(); /* needed by module_init stage. */
init_workqueues();
usermodehelper_init();
driver_init();
do_initcalls();
}
-static int __initdata nosoftlockup;
-
-static int __init nosoftlockup_setup(char *str)
-{
- nosoftlockup = 1;
- return 1;
-}
-__setup("nosoftlockup", nosoftlockup_setup);
-
static void __init do_pre_smp_initcalls(void)
{
- extern int spawn_ksoftirqd(void);
-#ifdef CONFIG_SMP
- extern int migration_init(void);
+ initcall_t *call;
- migration_init();
-#endif
- spawn_ksoftirqd();
- if (!nosoftlockup)
- spawn_softlockup_task();
+ for (call = __initcall_start; call < __early_initcall_end; call++)
+ do_one_initcall(*call);
}
static void run_init_process(char *init_filename)
/* This is a non __init function. Force it to be noinline otherwise gcc
* makes it inline to init() and it becomes part of init.text section
*/
-static int noinline init_post(void)
+static noinline int init_post(void)
{
+ /* need to finish all async __init code before freeing the memory */
+ async_synchronize_full();
free_initmem();
unlock_kernel();
mark_rodata_ro();
(void) sys_dup(0);
(void) sys_dup(0);
+ current->signal->flags |= SIGNAL_UNKILLABLE;
+
if (ramdisk_execute_command) {
run_init_process(ramdisk_execute_command);
printk(KERN_WARNING "Failed to execute %s\n",
/*
* init can run on any cpu.
*/
- set_cpus_allowed(current, CPU_MASK_ALL);
+ set_cpus_allowed_ptr(current, CPU_MASK_ALL_PTR);
/*
* Tell the world that we're going to be the grim
* reaper of innocent orphaned children.
*/
init_pid_ns.child_reaper = current;
- __set_special_pids(1, 1);
cad_pid = task_pid(current);
- smp_prepare_cpus(max_cpus);
+ smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
+ start_boot_trace();
smp_init();
sched_init_smp();
* we're essentially up and running. Get rid of the
* initmem segments and start the user-mode stuff..
*/
+
init_post();
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff