asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];

	smp_setup_processor_id();

	/*
	 * Need to run as early as possible, to initialize the
	 * lockdep hash:
	 */
	lockdep_init();
	debug_objects_early_init();

	/*
	 * Set up the the initial canary ASAP:
	 */
	boot_init_stack_canary();

	cgroup_init_early();

	local_irq_disable();
	early_boot_irqs_off();
	early_init_irq_lock_class();

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	tick_init();
	boot_cpu_init();
	page_address_init();
	printk(KERN_NOTICE "%s", linux_banner);
	setup_arch(&command_line);
	mm_init_owner(&init_mm, &init_task);
	setup_command_line(command_line);
	setup_nr_cpu_ids();
	setup_per_cpu_areas();
	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */

	build_all_zonelists(NULL);
	page_alloc_init();

	printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);

//[email protected] 2011.11.14 begin
//support lcd compatible
//reviewed by [email protected]
#if defined(CONFIG_LCD_DRV_ALL)
	char *p = strstr(boot_command_line, "lcd=");
	if (p)
	{
		lcd_drv_index = p[4] - 'A';
		printk("lcd index = %d", lcd_drv_index);
	}
#endif
//[email protected] 2011.11.14 end

	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()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	if (!irqs_disabled()) {
		printk(KERN_WARNING "start_kernel(): bug: interrupts were "
				"enabled *very* early, fixing it\n");
		local_irq_disable();
	}
	rcu_init();
	radix_tree_init();
	/* init some links before init_ISA_irqs() */
	early_irq_init();
	init_IRQ();
	prio_tree_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	timekeeping_init();
	time_init();
	profile_init();
	if (!irqs_disabled())
		printk(KERN_CRIT "start_kernel(): bug: interrupts were "
				 "enabled early\n");
	early_boot_irqs_on();
	local_irq_enable();

	/* Interrupts are enabled now so all GFP allocations are safe. */
	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
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

	lockdep_info();

	/*
	 * Need to run this when irqs are enabled, because it wants
	 * to self-test [hard/soft]-irqs on/off lock inversion bugs
	 * too:
	 */
	locking_selftest();

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
	    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((void *)initrd_start)),
		    min_low_pfn);
		initrd_start = 0;
	}
#endif
	page_cgroup_init();
	enable_debug_pagealloc();
	kmemtrace_init();
	kmemleak_init();
	debug_objects_mem_init();
	idr_init_cache();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	sched_clock_init();
	calibrate_delay();
	pidmap_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	thread_info_cache_init();
	cred_init();
	fork_init(totalram_pages);
	proc_caches_init();
	buffer_init();
	key_init();
	security_init();
	dbg_late_init();
	vfs_caches_init(totalram_pages);
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cgroup_init();
	cpuset_init();
	taskstats_init_early();
	delayacct_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */
	sfi_init_late();

	ftrace_init();

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Esempio n. 2
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];

	smp_setup_processor_id();

	/*
	 * Need to run as early as possible, to initialize the
	 * lockdep hash:
	 */
	unwind_init();
	lockdep_init();

	local_irq_disable();
	early_boot_irqs_off();
	early_init_irq_lock_class();

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	boot_cpu_init();
	page_address_init();
	printk(KERN_NOTICE);
	printk(linux_banner);
	setup_arch(&command_line);
	setup_per_cpu_areas();
	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * 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", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __start___param,
		   __stop___param - __start___param,
		   &unknown_bootoption);
	sort_main_extable();
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	timekeeping_init();
	time_init();
	profile_init();
	if (!irqs_disabled())
		printk("start_kernel(): bug: interrupts were enabled early\n");
	early_boot_irqs_on();
	local_irq_enable();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

	lockdep_info();

	/*
	 * Need to run this when irqs are enabled, because it wants
	 * to self-test [hard/soft]-irqs on/off lock inversion bugs
	 * too:
	 */
	locking_selftest();

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	cpuset_init_early();
	mem_init();
	kmem_cache_init();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	key_init();
	security_init();
	vfs_caches_init(num_physpages);
	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cpuset_init();
	taskstats_init_early();
	delayacct_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Esempio n. 3
0
asmlinkage void __init start_kernel(void)
{
	char * command_line;
	extern struct kernel_param __start___param[], __stop___param[];
#ifdef CONFIG_RTAI_RTSPMM
        unsigned int indice_part;
        /* Size of the needed memory block by the configuration */
        unsigned long rt_mem_block_size = 0;
#endif
/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	page_address_init();
	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();

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * fragile until we cpu_idle() for the first time.
	 */
	preempt_disable();
	build_all_zonelists();
	page_alloc_init();
	early_init_hardirqs();
	printk("Kernel command line: %s\n", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __start___param,
		   __stop___param - __start___param,
		   &unknown_bootoption);
	sort_main_extable();
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	softirq_init();
	time_init();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);

#ifdef CONFIG_RTAI_RTSPMM
        /* Allocate a big and continuous memory block for the module SPMM
           included in the RTAI functionalities */
        printk("--- Memory Allocation for the module rt_spmm ---\n");
        /* WARNING
           We need to add some space for the structures vrtxptext and vrtxpt and the partitions bitmap
           that the module rt_spmm uses to handle the blocks in each partition */
        /* for each defined partitions */
        for(indice_part = 0; indice_part <  RT_MAX_PART_NUM; indice_part ++)
          {
            if ((rt_partitions_table[indice_part].block_size != 0) &&
                (rt_partitions_table[indice_part].num_of_blocks != 0))
              {
                rt_partitions_table[indice_part].part_size =
                  (rt_partitions_table[indice_part].block_size + XN_NBBY)
                  *rt_partitions_table[indice_part].num_of_blocks +
                  + sizeof(vrtxptext_t)+sizeof(vrtxpt_t);
                rt_mem_block_size += rt_partitions_table[indice_part].part_size;
              }
          }
#ifdef CONFIG_RTAI_PART_DMA
        printk("Allocate memory in the low part of memory\n");
        rt_mem_block_ptr=(void*)alloc_bootmem_low(rt_mem_block_size + PAGE_SIZE-1);
#else
        printk("Allocate memory in the standard part of memory\n");
        rt_mem_block_ptr=(void*)alloc_bootmem(rt_mem_block_size + PAGE_SIZE-1);
#endif /* CONFIG_PART_DMA */
        printk("Needed Memory Size : %lu\n", rt_mem_block_size);
        printk("Allocated Memory Size : %lu\n", rt_mem_block_size + PAGE_SIZE-1);
        printk("Memory block address : 0x%x\n", (unsigned int)rt_mem_block_ptr);
        printk("-----------------------------------------------\n");
#endif /* CONFIG_RTAI_RTSPMM */

	profile_init();
	local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	mem_init();
	kmem_cache_init();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	security_init();
	vfs_caches_init(num_physpages);

#ifdef CONFIG_MOT_FEAT_DEVICE_TREE
	mothwcfg_init();
#endif /* CONFIG_MOT_FEAT_DEVICE_TREE */

	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}
Esempio n. 4
0
int main(int argc, char ** argv)
{
    if (security_init() != 0) {
        log(CRITICAL, "Security initialisation Error. Exiting.");
        return EXIT_SECURITY_ERROR;
    }

    if (security_check() != SECURITY_OKAY) {
        log(CRITICAL, "Security check error. Exiting.");
        return EXIT_SECURITY_ERROR;
    }

    interactive_signals();

    int config_status = loadConfig(argc, argv, USAGE_SERVER);
    if (config_status < 0) {
        if (config_status == CONFIG_VERSION) {
            std::cout << argv[0] << " (cyphesis) " << consts::version
                      << " (Cyphesis build " << consts::buildId << ")"
                      << std::endl << std::flush;

            return 0;
        } else if (config_status == CONFIG_HELP) {
            showUsage(argv[0], USAGE_SERVER);
            return 0;
        } else if (config_status != CONFIG_ERROR) {
            log(ERROR, "Unknown error reading configuration.");
        }
        // Fatal error loading config file.
        return EXIT_CONFIG_ERROR;
    }

    if (daemon_flag) {
        int pid = daemonise();
        if (pid == -1) {
            return EXIT_FORK_ERROR;
        } else if (pid > 0) {
            return EXIT_SUCCESS;
        }
    }

    readConfigItem(instance, "usedatabase", database_flag);

    // If we are a daemon logging to syslog, we need to set it up.
    initLogger();

    // Initialise the persistance subsystem. If we have been built with
    // database support, this will open the various databases used to
    // store server data.
    if (database_flag) {
        Persistence * p = Persistence::instance();
        int dbstatus = p->init();
        if (dbstatus < 0) {
            database_flag = false;
            log(ERROR, "Error opening database. Database disabled.");
            if (dbstatus == DATABASE_TABERR) {
                log(INFO, "Database connection established, "
                          "but unable to create required tables.");
                log(INFO, "Please ensure that any obsolete database "
                          "tables have been removed.");
            } else {
                log(INFO, "Unable to connect to the RDBMS.");
                log(INFO, "Please ensure that the RDBMS is running, "
                          "the cyphesis database exists and is accessible "
                          "to the user running cyphesis.");
            }
            log(INFO, String::compose("To disable this message please run:\n\n"
                                      "    cyconfig --%1:usedatabase=false\n\n"
                                      "to permanently disable database usage.",
                                      instance));
        }
    }

    // If the restricted flag is set in the config file, then we
    // don't allow connecting users to create accounts. Accounts must
    // be created manually by the server administrator.
    if (restricted_flag) {
        log(INFO, "Setting restricted mode.");
    }

    readConfigItem(instance, "inittime", timeoffset);

    std::string server_name;
    if (readConfigItem(instance, "servername", server_name) != 0) {
        if (instance == CYPHESIS) {
            server_name = get_hostname();
        } else {
            server_name = instance;
        }
    }

    int nice = 1;
    readConfigItem(instance, "nice", nice);
    
    // Start up the python subsystem.
    init_python_api();

    { // scope for CommServer

    // Create commserver instance that will handle connections from clients.
    // The commserver will create the other server related objects, and the
    // world object pair (World + WorldRouter), and initialise the admin
    // account. The primary ruleset name is passed in so it
    // can be stored and queried by clients.
    Inheritance::instance();

    WorldRouter world;

    Ruleset::init();

    TeleportAuthenticator::init();

    StorageManager store(world);

    // This ID is currently generated every time, but should perhaps be
    // persistent in future.
    std::string server_id, lobby_id;
    long int_id, lobby_int_id;

    if (((int_id = newId(server_id)) < 0) ||
        ((lobby_int_id = newId(lobby_id)) < 0)) {
        log(CRITICAL, "Unable to get server IDs from Database");
        return EXIT_DATABASE_ERROR;
    }

    ServerRouting server(world, ruleset, server_name,
                         server_id, int_id,
                         lobby_id, lobby_int_id);

    CommServer commServer(server);

    if (commServer.setup() != 0) {
        log(CRITICAL, "Internal error setting up server infrastructure");
        return EXIT_SOCKET_ERROR;
    }

    // This is where we should restore the database, before
    // the listen sockets are open. Unlike earlier code, we are
    // attempting to construct the internal state from the database,
    // not creating a new world using the contents of the database as a
    // template

    if (database_flag) {
        // log(INFO, _("Restoring world from database..."));

        store.restoreWorld();
        // FIXME Do the following steps.
        // Read the world entity if any from the database, or set it up.
        // If it was there, make sure it did not get any of the wrong
        // position or orientation data.
        store.initWorld();

        // log(INFO, _("Restored world."));

        CommPSQLSocket * dbsocket = new CommPSQLSocket(commServer,
                                        Persistence::instance()->m_connection);
        commServer.addSocket(dbsocket);
        commServer.addIdle(dbsocket);

        IdleConnector * storage_idle = new IdleConnector(commServer);
        storage_idle->idling.connect(sigc::mem_fun(&store, &StorageManager::tick));
        commServer.addIdle(storage_idle);
    } else {
        std::string adminId;
        long intId = newId(adminId);
        assert(intId >= 0);

        Admin * admin = new Admin(0, "admin", "BAD_HASH", adminId, intId);
        server.addAccount(admin);
    }

    // Add the test object, and call it regularly so it can do what it does.
    // UpdateTester * update_tester = new UpdateTester(commServer);
    // commServer.addIdle(update_tester);

    CommTCPListener * listener = new CommTCPListener(commServer,
          *new CommClientFactory<Connection>());
    if (client_port_num < 0) {
        client_port_num = dynamic_port_start;
        for (; client_port_num <= dynamic_port_end; client_port_num++) {
            if (listener->setup(client_port_num) == 0) {
                break;
            }
        }
        if (client_port_num > dynamic_port_end) {
            log(ERROR, String::compose("Could not find free client listen "
                                       "socket in range %1-%2. Init failed.",
                                       dynamic_port_start, dynamic_port_end));
            log(INFO, String::compose("To allocate 8 more ports please run:"
                                      "\n\n    cyconfig "
                                      "--cyphesis:dynamic_port_end=%1\n\n",
                                      dynamic_port_end + 8));
            return EXIT_PORT_ERROR;
        }
        log(INFO, String::compose("Auto configuring new instance \"%1\" "
                                  "to use port %2.",
                                  instance, client_port_num));
        global_conf->setItem(instance, "tcpport", client_port_num,
                             varconf::USER);
        global_conf->setItem(CYPHESIS, "dynamic_port_start",
                             client_port_num + 1, varconf::USER);
    } else {
        if (listener->setup(client_port_num) != 0) {
            log(ERROR, String::compose("Could not create client listen socket "
                                       "on port %1. Init failed.",
                                       client_port_num));
            return EXIT_SOCKET_ERROR;
        }
    }
    commServer.addSocket(listener);

#ifdef HAVE_SYS_UN_H
    CommUnixListener * localListener = new CommUnixListener(commServer,
          *new CommClientFactory<TrustedConnection>());
    if (localListener->setup(client_socket_name) != 0) {
        log(ERROR, String::compose("Could not create local listen socket "
                                   "with address \"%1\"",
                                   localListener->getPath()));
        delete localListener;
    } else {
        commServer.addSocket(localListener);
    }

    CommUnixListener * pythonListener = new CommUnixListener(commServer,
          *new CommPythonClientFactory());
    if (pythonListener->setup(python_socket_name) != 0) {
        log(ERROR, String::compose("Could not create python listen socket "
                                   "with address %1.",
                                   pythonListener->getPath()));
        delete pythonListener;
    } else {
        commServer.addSocket(pythonListener);
    }
#endif

    CommTCPListener * httpListener = new CommTCPListener(commServer,
          *new CommHttpClientFactory());
    if (httpListener->setup(http_port_num) != 0) {
        log(ERROR, String::compose("Could not create http listen socket on "
                                   "port %1.", http_port_num));
        delete httpListener;
    } else {
        commServer.addSocket(httpListener);
    }

    if (useMetaserver) {
        CommMetaClient * cmc = new CommMetaClient(commServer);
        if (cmc->setup(mserver) == 0) {
            commServer.addIdle(cmc);
        } else {
            log(ERROR, "Error creating metaserver comm channel.");
            delete cmc;
        }
    }

#if defined(HAVE_LIBHOWL) || defined(HAVE_AVAHI)

    CommMDNSPublisher * cmdns = new CommMDNSPublisher(commServer);
    if (cmdns->setup() == 0) {
        commServer.addSocket(cmdns);
        commServer.addIdle(cmdns);
    } else {
        log(ERROR, "Unable to register service with MDNS daemon.");
        delete cmdns;
    }

#endif // defined(HAVE_LIBHOWL) || defined(HAVE_AVAHI)

    // Configuration is now complete, and verified as somewhat sane, so
    // we save the updated user config.

    updateUserConfiguration();

    log(INFO, "Running");
    logEvent(START, "- - - Standalone server startup");

    // Inform things that want to know that we are running.
    running();

    // Reduce our system priority to make it easier to debug a runaway
    // server.
    if (nice != 0) {
        reduce_priority(nice);
    }

    // Loop until the exit flag is set. The exit flag can be set anywhere in
    // the code easily.
    while (!exit_flag) {
        try {
            commServer.poll();
        }
        catch (...) {
            // It is hoped that commonly thrown exception, particularly
            // exceptions that can be caused  by external influences
            // should be caught close to where they are thrown. If
            // an exception makes it here then it should be debugged.
            log(ERROR, "Exception caught in main()");
        }
    }
    // exit flag has been set so we close down the databases, and indicate
    // to the metaserver (if we are using one) that this server is going down.
    // It is assumed that any preparation for the shutdown that is required
    // by the game has been done before exit flag was set.
    log(NOTICE, "Performing clean shutdown...");

    } // close scope of CommServer, WorldRouter, and ServerRouting, which
      // cause the destruction of the server and world objects, and the entire
      // world contents

    Persistence::instance()->shutdown();

    EntityBuilder::instance()->flushFactories();
    EntityBuilder::del();
    ArithmeticBuilder::del();
    MindFactory::del();
    TeleportAuthenticator::del();

    Inheritance::clear();

    // Shutdown the python interpretter. This frees lots of memory, and if
    // the malloc heap is in any way corrupt, a segfault is likely to
    // occur at this point. Previous occassions where pointers have been
    // deleted twice elsewhere in the code, have resulted in a segfault
    // at this point. AlRiddoch 10th November 2001
    shutdown_python_api();

    delete global_conf;

    log(INFO, "Clean shutdown complete.");
    logEvent(STOP, "- - - Standalone server shutdown");
    return 0;
}
Esempio n. 5
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asmlinkage void __init start_kernel(void)
{
	char * command_line;

/*
 * Interrupts are still disabled. Do necessary setups, then
 * enable them
 */
	lock_kernel();
	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();

	/*
	 * Set up the scheduler prior starting any interrupts (such as the
	 * timer interrupt). Full topology setup happens at smp_init()
	 * time - but meanwhile we still have a functioning scheduler.
	 */
	sched_init();
	/*
	 * Disable preemption - early bootup scheduling is extremely
	 * 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", saved_command_line);
	parse_early_param();
	parse_args("Booting kernel", command_line, __kernel_param_list_ptr,
		   kparam_list_count(),
		   &unknown_bootoption);
	sort_main_extable();
#ifdef CONFIG_LTT
	ltt_init();
#endif //CONFIG_LTT
	trap_init();
	rcu_init();
	init_IRQ();
	pidhash_init();
	init_timers();
	hrtimers_init();
	softirq_init();
	time_init();

	/*
	 * HACK ALERT! This is early. We're enabling the console before
	 * we've done PCI setups etc, and console_init() must be aware of
	 * this. But we do want output early, in case something goes wrong.
	 */
	console_init();
	if (panic_later)
		panic(panic_later, panic_param);
	profile_init();
	local_irq_enable();
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && !initrd_below_start_ok &&
			initrd_start < min_low_pfn << PAGE_SHIFT) {
		printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
		    "disabling it.\n",initrd_start,min_low_pfn << PAGE_SHIFT);
		initrd_start = 0;
	}
#endif
	vfs_caches_init_early();
	mem_init();
	kmem_cache_init();
	setup_per_cpu_pageset();
	numa_policy_init();
	if (late_time_init)
		late_time_init();
	calibrate_delay();
	pidmap_init();
	pgtable_cache_init();
	prio_tree_init();
	anon_vma_init();
#ifdef CONFIG_X86
	if (efi_enabled)
		efi_enter_virtual_mode();
#endif
	fork_init(num_physpages);
	proc_caches_init();
	buffer_init();
	unnamed_dev_init();
	key_init();
	security_init();
	vfs_caches_init(num_physpages);
	radix_tree_init();
	signals_init();
	/* rootfs populating might need page-writeback */
	page_writeback_init();
#ifdef CONFIG_PROC_FS
	proc_root_init();
#endif
	cpuset_init();

	check_bugs();

	acpi_early_init(); /* before LAPIC and SMP init */

	/* Do the rest non-__init'ed, we're now alive */
	rest_init();
}