diff options
Diffstat (limited to 'arch/arm/kernel/smp.c')
| -rw-r--r-- | arch/arm/kernel/smp.c | 33 |
1 files changed, 6 insertions, 27 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index f6a4d32b042..b735521a4a5 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -60,32 +60,11 @@ enum ipi_msg_type { static DECLARE_COMPLETION(cpu_running); -int __cpuinit __cpu_up(unsigned int cpu) +int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle) { - struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu); - struct task_struct *idle = ci->idle; int ret; /* - * Spawn a new process manually, if not already done. - * Grab a pointer to its task struct so we can mess with it - */ - if (!idle) { - idle = fork_idle(cpu); - if (IS_ERR(idle)) { - printk(KERN_ERR "CPU%u: fork() failed\n", cpu); - return PTR_ERR(idle); - } - ci->idle = idle; - } else { - /* - * Since this idle thread is being re-used, call - * init_idle() to reinitialize the thread structure. - */ - init_idle(idle, cpu); - } - - /* * We need to tell the secondary core where to find * its stack and the page tables. */ @@ -251,8 +230,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void) struct mm_struct *mm = &init_mm; unsigned int cpu = smp_processor_id(); - printk("CPU%u: Booted secondary processor\n", cpu); - /* * All kernel threads share the same mm context; grab a * reference and switch to it. @@ -264,6 +241,8 @@ asmlinkage void __cpuinit secondary_start_kernel(void) enter_lazy_tlb(mm, current); local_flush_tlb_all(); + printk("CPU%u: Booted secondary processor\n", cpu); + cpu_init(); preempt_disable(); trace_hardirqs_off(); @@ -318,9 +297,6 @@ void __init smp_cpus_done(unsigned int max_cpus) void __init smp_prepare_boot_cpu(void) { - unsigned int cpu = smp_processor_id(); - - per_cpu(cpu_data, cpu).idle = current; } void __init smp_prepare_cpus(unsigned int max_cpus) @@ -454,6 +430,9 @@ static struct local_timer_ops *lt_ops; #ifdef CONFIG_LOCAL_TIMERS int local_timer_register(struct local_timer_ops *ops) { + if (!is_smp() || !setup_max_cpus) + return -ENXIO; + if (lt_ops) return -EBUSY; |