diff options
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/init/main.c b/init/main.c index 80b04b6c5157..cb81ed116f62 100644 --- a/init/main.c +++ b/init/main.c @@ -128,7 +128,7 @@ static char *ramdisk_execute_command; #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 @@ -146,7 +146,7 @@ static inline void disable_ioapic_setup(void) {}; static int __init nosmp(char *str) { - max_cpus = 0; + setup_max_cpus = 0; disable_ioapic_setup(); return 0; } @@ -155,8 +155,8 @@ early_param("nosmp", nosmp); 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; @@ -164,7 +164,7 @@ static int __init maxcpus(char *str) early_param("maxcpus", maxcpus); #else -#define max_cpus NR_CPUS +#define setup_max_cpus NR_CPUS #endif /* @@ -318,6 +318,10 @@ static int __init unknown_bootoption(char *param, char *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; @@ -363,7 +367,7 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { } #else -#ifdef __GENERIC_PER_CPU +#ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA unsigned long __per_cpu_offset[NR_CPUS] __read_mostly; EXPORT_SYMBOL(__per_cpu_offset); @@ -384,7 +388,7 @@ static void __init setup_per_cpu_areas(void) 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) @@ -393,7 +397,7 @@ static void __init smp_init(void) /* 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); @@ -401,7 +405,7 @@ static void __init smp_init(void) /* 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 @@ -552,6 +556,7 @@ asmlinkage void __init start_kernel(void) preempt_disable(); build_all_zonelists(); page_alloc_init(); + enable_debug_pagealloc(); printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line); parse_early_param(); parse_args("Booting kernel", static_command_line, __start___param, @@ -607,6 +612,7 @@ asmlinkage void __init start_kernel(void) vfs_caches_init_early(); cpuset_init_early(); mem_init(); + cpu_hotplug_init(); kmem_cache_init(); setup_per_cpu_pageset(); numa_policy_init(); @@ -823,7 +829,7 @@ static int __init kernel_init(void * unused) __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(); |