early_param("nosmp", nosmp);
+/* this is hard limit */
+static int __init nrcpus(char *str)
+{
+ int nr_cpus;
+
+ get_option(&str, &nr_cpus);
+ if (nr_cpus > 0 && nr_cpus < nr_cpu_ids)
+ nr_cpu_ids = nr_cpus;
+
+ return 0;
+}
+
+early_param("nr_cpus", nrcpus);
+
static int __init maxcpus(char *str)
{
get_option(&str, &setup_max_cpus);
early_param("maxcpus", maxcpus);
#else
-const unsigned int setup_max_cpus = NR_CPUS;
+static const unsigned int setup_max_cpus = NR_CPUS;
#endif
/*
{
unsigned int cpu;
- /*
- * Set up the current CPU as possible to migrate to.
- * The other ones will be done by cpu_up/cpu_down()
- */
- set_cpu_active(smp_processor_id(), true);
-
/* FIXME: This should be done in userspace --RR */
for_each_present_cpu(cpu) {
if (num_online_cpus() >= setup_max_cpus)
kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);
numa_default_policy();
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
+ rcu_read_lock();
kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
+ rcu_read_unlock();
unlock_kernel();
/*
int cpu = smp_processor_id();
/* Mark the boot cpu "present", "online" etc for SMP and UP case */
set_cpu_online(cpu, true);
+ set_cpu_active(cpu, true);
set_cpu_present(cpu, true);
set_cpu_possible(cpu, true);
}
local_irq_disable();
}
rcu_init();
+ radix_tree_init();
/* init some links before init_ISA_irqs() */
early_irq_init();
init_IRQ();
local_irq_enable();
/* Interrupts are enabled now so all GFP allocations are safe. */
- set_gfp_allowed_mask(__GFP_BITS_MASK);
+ gfp_allowed_mask = __GFP_BITS_MASK;
kmem_cache_init_late();
key_init();
security_init();
vfs_caches_init(totalram_pages);
- radix_tree_init();
signals_init();
/* rootfs populating might need page-writeback */
page_writeback_init();
static void __init do_ctors(void)
{
#ifdef CONFIG_CONSTRUCTORS
- ctor_fn_t *call = (ctor_fn_t *) __ctors_start;
+ ctor_fn_t *fn = (ctor_fn_t *) __ctors_start;
- for (; call < (ctor_fn_t *) __ctors_end; call++)
- (*call)();
+ for (; fn < (ctor_fn_t *) __ctors_end; fn++)
+ (*fn)();
#endif
}
static void __init do_initcalls(void)
{
- initcall_t *call;
+ initcall_t *fn;
- for (call = __early_initcall_end; call < __initcall_end; call++)
- do_one_initcall(*call);
+ for (fn = __early_initcall_end; fn < __initcall_end; fn++)
+ do_one_initcall(*fn);
/* Make sure there is no pending stuff from the initcall sequence */
flush_scheduled_work();
static void __init do_pre_smp_initcalls(void)
{
- initcall_t *call;
+ initcall_t *fn;
- for (call = __initcall_start; call < __early_initcall_end; call++)
- do_one_initcall(*call);
+ for (fn = __initcall_start; fn < __early_initcall_end; fn++)
+ do_one_initcall(*fn);
}
static void run_init_process(char *init_filename)
system_state = SYSTEM_RUNNING;
numa_default_policy();
- if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
- printk(KERN_WARNING "Warning: unable to open an initial console.\n");
-
- (void) sys_dup(0);
- (void) sys_dup(0);
current->signal->flags |= SIGNAL_UNKILLABLE;
run_init_process("/bin/init");
run_init_process("/bin/sh");
- panic("No init found. Try passing init= option to kernel.");
+ panic("No init found. Try passing init= option to kernel. "
+ "See Linux Documentation/init.txt for guidance.");
}
static int __init kernel_init(void * unused)
/*
* init can allocate pages on any node
*/
- set_mems_allowed(node_possible_map);
+ set_mems_allowed(node_states[N_HIGH_MEMORY]);
/*
* init can run on any cpu.
*/
do_basic_setup();
+ /* Open the /dev/console on the rootfs, this should never fail */
+ if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+ printk(KERN_WARNING "Warning: unable to open an initial console.\n");
+
+ (void) sys_dup(0);
+ (void) sys_dup(0);
/*
* check if there is an early userspace init. If yes, let it do all
* the work