#include <linux/proc_fs.h>
#include <linux/kernel.h>
#include <linux/syscalls.h>
+#include <linux/stackprotector.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#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/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/kmemleak.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 <linux/kmemtrace.h>
+#include <trace/boot.h>
#include <asm/io.h>
#include <asm/bugs.h>
#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);
extern void fork_init(unsigned long);
extern void mca_init(void);
extern void sbus_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 tc_init(void);
#endif
-enum system_states system_state;
+enum system_states system_state __read_mostly;
EXPORT_SYMBOL(system_state);
/*
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. */
* greater than 0, limits the maximum number of CPUs activated in
* SMP mode to <NUM>.
*/
-#ifndef CONFIG_X86_IO_APIC
-static inline void disable_ioapic_setup(void) {};
-#endif
+
+void __weak arch_disable_smp_support(void) { }
static int __init nosmp(char *str)
{
setup_max_cpus = 0;
- disable_ioapic_setup();
+ arch_disable_smp_support();
+
return 0;
}
{
get_option(&str, &setup_max_cpus);
if (setup_max_cpus == 0)
- disable_ioapic_setup();
+ arch_disable_smp_support();
return 0;
}
early_param("maxcpus", maxcpus);
#else
-#define setup_max_cpus NR_CPUS
+const unsigned int setup_max_cpus = NR_CPUS;
#endif
/*
/* 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
* 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);
+ set_cpu_active(smp_processor_id(), true);
/* FIXME: This should be done in userspace --RR */
for_each_present_cpu(cpu) {
* 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;
* at least once to get things moving:
*/
init_idle_bootup_task(current);
+ rcu_scheduler_starting();
preempt_enable_no_resched();
schedule();
preempt_disable();
return 0;
}
+void __init parse_early_options(char *cmdline)
+{
+ parse_args("early options", cmdline, NULL, 0, do_early_param);
+}
+
/* Arch code calls this early on, or if not, just before other parsing. */
void __init parse_early_param(void)
{
/* All fall through to do_early_param. */
strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
- parse_args("early options", tmp_cmdline, NULL, 0, do_early_param);
+ parse_early_options(tmp_cmdline);
done = 1;
}
{
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)
{
}
+/*
+ * Set up kernel memory allocators
+ */
+static void __init mm_init(void)
+{
+ /*
+ * page_cgroup requires countinous pages as memmap
+ * and it's bigger than MAX_ORDER unless SPARSEMEM.
+ */
+ page_cgroup_init_flatmem();
+ mem_init();
+ kmem_cache_init();
+ vmalloc_init();
+}
+
asmlinkage void __init start_kernel(void)
{
char * command_line;
* Need to run as early as possible, to initialize the
* lockdep hash:
*/
- unwind_init();
lockdep_init();
debug_objects_early_init();
+
+ /*
+ * Set up the the initial canary ASAP:
+ */
+ boot_init_stack_canary();
+
cgroup_init_early();
local_irq_disable();
tick_init();
boot_cpu_init();
page_address_init();
- printk(KERN_NOTICE);
- printk(linux_banner);
+ printk(KERN_NOTICE "%s", 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 */
+ build_all_zonelists();
+ page_alloc_init();
+
+ printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
+ parse_early_param();
+ parse_args("Booting kernel", static_command_line, __start___param,
+ __stop___param - __start___param,
+ &unknown_bootoption);
+ /*
+ * These use large bootmem allocations and must precede
+ * kmem_cache_init()
+ */
+ pidhash_init();
+ vfs_caches_init_early();
+ sort_main_extable();
+ trap_init();
+ mm_init();
/*
* Set up the scheduler prior starting any interrupts (such as the
* timer interrupt). Full topology setup happens at smp_init()
* fragile until we cpu_idle() for the first time.
*/
preempt_disable();
- build_all_zonelists();
- page_alloc_init();
- printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
- parse_early_param();
- parse_args("Booting kernel", static_command_line, __start___param,
- __stop___param - __start___param,
- &unknown_bootoption);
if (!irqs_disabled()) {
printk(KERN_WARNING "start_kernel(): bug: interrupts were "
"enabled *very* early, fixing it\n");
local_irq_disable();
}
- sort_main_extable();
- trap_init();
rcu_init();
+ /* init some links before init_ISA_irqs() */
+ early_irq_init();
init_IRQ();
- pidhash_init();
+ prio_tree_init();
init_timers();
hrtimers_init();
softirq_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 &&
- page_to_pfn(virt_to_page(initrd_start)) < min_low_pfn) {
+ page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
"disabling it.\n",
- page_to_pfn(virt_to_page(initrd_start)), min_low_pfn);
+ page_to_pfn(virt_to_page((void *)initrd_start)),
+ min_low_pfn);
initrd_start = 0;
}
#endif
- vfs_caches_init_early();
cpuset_init_early();
- mem_init();
+ page_cgroup_init();
enable_debug_pagealloc();
cpu_hotplug_init();
- kmem_cache_init();
+ kmemtrace_init();
+ kmemleak_init();
debug_objects_mem_init();
idr_init_cache();
setup_per_cpu_pageset();
calibrate_delay();
pidmap_init();
pgtable_cache_init();
- prio_tree_init();
anon_vma_init();
#ifdef CONFIG_X86
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);
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)
-{
- initcall_debug = 1;
- return 1;
-}
-__setup("initcall_debug", initcall_debug_setup);
-
-static void __init do_one_initcall(initcall_t fn)
+int do_one_initcall(initcall_t fn)
{
int count = preempt_count();
- ktime_t t0, t1, delta;
+ ktime_t calltime, delta, rettime;
char msgbuf[64];
- int result;
+ struct boot_trace_call call;
+ struct boot_trace_ret ret;
if (initcall_debug) {
- print_fn_descriptor_symbol("calling %s\n", fn);
- t0 = ktime_get();
+ 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();
}
- result = fn();
+ ret.result = fn();
if (initcall_debug) {
- t1 = ktime_get();
- delta = ktime_sub(t1, t0);
-
- print_fn_descriptor_symbol("initcall %s", fn);
- printk(" returned %d after %Ld msecs\n", result,
- (unsigned long long) delta.tv64 >> 20);
+ 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);
}
msgbuf[0] = 0;
- if (result && result != -ENODEV && initcall_debug)
- sprintf(msgbuf, "error code %d ", result);
+ if (ret.result && ret.result != -ENODEV && initcall_debug)
+ sprintf(msgbuf, "error code %d ", ret.result);
if (preempt_count() != count) {
strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
local_irq_enable();
}
if (msgbuf[0]) {
- print_fn_descriptor_symbol(KERN_WARNING "initcall %s", fn);
- printk(" returned with %s\n", msgbuf);
+ printk("initcall %pF returned with %s\n", fn, msgbuf);
}
+
+ return ret.result;
}
-extern initcall_t __initcall_start[], __initcall_end[];
+extern initcall_t __initcall_start[], __initcall_end[], __early_initcall_end[];
static void __init do_initcalls(void)
{
initcall_t *call;
- for (call = __initcall_start; call < __initcall_end; 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 */
static void __init do_basic_setup(void)
{
rcu_init_sched(); /* needed by module_init stage. */
- /* drivers will send hotplug events */
init_workqueues();
+ cpuset_init_smp();
usermodehelper_init();
driver_init();
init_irq_proc();
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);
+ initcall_t *call;
- init_call_single_data();
- migration_init();
- 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)
+ __releases(kernel_lock)
{
+ /* need to finish all async __init code before freeing the memory */
+ async_synchronize_full();
free_initmem();
unlock_kernel();
mark_rodata_ro();
/*
* init can run on any cpu.
*/
- set_cpus_allowed_ptr(current, CPU_MASK_ALL_PTR);
+ set_cpus_allowed_ptr(current, cpu_all_mask);
/*
* Tell the world that we're going to be the grim
* reaper of innocent orphaned children.
smp_prepare_cpus(setup_max_cpus);
do_pre_smp_initcalls();
+ start_boot_trace();
smp_init();
sched_init_smp();
- cpuset_init_smp();
-
do_basic_setup();
/*
* 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