diff options
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/init/main.c b/init/main.c index dac44a9356a5..3bdb152f412f 100644 --- a/init/main.c +++ b/init/main.c @@ -25,7 +25,6 @@ #include <linux/bootmem.h> #include <linux/acpi.h> #include <linux/tty.h> -#include <linux/gfp.h> #include <linux/percpu.h> #include <linux/kmod.h> #include <linux/vmalloc.h> @@ -63,12 +62,14 @@ #include <linux/sched.h> #include <linux/signal.h> #include <linux/idr.h> +#include <linux/kgdb.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 <linux/slab.h> #include <trace/boot.h> #include <asm/io.h> @@ -149,6 +150,20 @@ static int __init nosmp(char *str) 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); @@ -160,7 +175,7 @@ static int __init maxcpus(char *str) early_param("maxcpus", maxcpus); #else -const unsigned int setup_max_cpus = NR_CPUS; +static const unsigned int setup_max_cpus = NR_CPUS; #endif /* @@ -416,7 +431,9 @@ static noinline void __init_refok rest_init(void) 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(); /* @@ -550,7 +567,7 @@ asmlinkage void __init start_kernel(void) setup_per_cpu_areas(); smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */ - build_all_zonelists(); + build_all_zonelists(NULL); page_alloc_init(); printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line); @@ -584,6 +601,7 @@ asmlinkage void __init start_kernel(void) local_irq_disable(); } rcu_init(); + radix_tree_init(); /* init some links before init_ISA_irqs() */ early_irq_init(); init_IRQ(); @@ -601,7 +619,7 @@ asmlinkage void __init start_kernel(void) 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(); @@ -658,8 +676,8 @@ asmlinkage void __init start_kernel(void) buffer_init(); key_init(); security_init(); + dbg_late_init(); vfs_caches_init(totalram_pages); - radix_tree_init(); signals_init(); /* rootfs populating might need page-writeback */ page_writeback_init(); @@ -806,11 +824,6 @@ static noinline int init_post(void) 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; @@ -836,7 +849,8 @@ static noinline int init_post(void) 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) @@ -846,7 +860,7 @@ 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. */ @@ -873,6 +887,12 @@ static int __init kernel_init(void * unused) 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 |